WO2003052003A1 - Composition de revetement permettant de former des couches minces a faible indice de refraction - Google Patents
Composition de revetement permettant de former des couches minces a faible indice de refraction Download PDFInfo
- Publication number
- WO2003052003A1 WO2003052003A1 PCT/JP2002/013081 JP0213081W WO03052003A1 WO 2003052003 A1 WO2003052003 A1 WO 2003052003A1 JP 0213081 W JP0213081 W JP 0213081W WO 03052003 A1 WO03052003 A1 WO 03052003A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- coating composition
- thin film
- basic
- silica precursor
- Prior art date
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- 239000008199 coating composition Substances 0.000 title claims abstract description 81
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 446
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 220
- 239000002243 precursor Substances 0.000 claims abstract description 117
- 150000007514 bases Chemical class 0.000 claims abstract description 86
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 66
- 239000000203 mixture Substances 0.000 claims abstract description 61
- 239000000758 substrate Substances 0.000 claims abstract description 50
- 239000012530 fluid Substances 0.000 claims abstract description 48
- 239000007864 aqueous solution Substances 0.000 claims abstract description 40
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 39
- 238000006068 polycondensation reaction Methods 0.000 claims abstract description 33
- 238000009835 boiling Methods 0.000 claims abstract description 31
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 25
- 239000003377 acid catalyst Substances 0.000 claims abstract description 21
- 239000010409 thin film Substances 0.000 claims description 139
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 83
- -1 polypropylene Polymers 0.000 claims description 64
- 239000010408 film Substances 0.000 claims description 59
- 230000009969 flowable effect Effects 0.000 claims description 57
- 239000002904 solvent Substances 0.000 claims description 53
- 125000004432 carbon atom Chemical group C* 0.000 claims description 50
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 45
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 27
- 238000000605 extraction Methods 0.000 claims description 26
- 229920000642 polymer Polymers 0.000 claims description 22
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 125000000217 alkyl group Chemical group 0.000 claims description 18
- 125000004429 atom Chemical group 0.000 claims description 15
- 230000003301 hydrolyzing effect Effects 0.000 claims description 15
- 125000000962 organic group Chemical group 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 150000005846 sugar alcohols Polymers 0.000 claims description 13
- 229920000570 polyether Polymers 0.000 claims description 12
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical group C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 11
- 150000005621 tetraalkylammonium salts Chemical class 0.000 claims description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 10
- 150000002148 esters Chemical class 0.000 claims description 10
- 150000001720 carbohydrates Chemical class 0.000 claims description 9
- 239000003729 cation exchange resin Substances 0.000 claims description 9
- 229920000515 polycarbonate Polymers 0.000 claims description 9
- 239000004417 polycarbonate Substances 0.000 claims description 9
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 8
- 125000003368 amide group Chemical group 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 238000000638 solvent extraction Methods 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 125000002947 alkylene group Chemical group 0.000 claims description 6
- 125000000732 arylene group Chemical group 0.000 claims description 6
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 6
- 125000003700 epoxy group Chemical group 0.000 claims description 6
- 125000001033 ether group Chemical group 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 5
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 claims description 5
- 125000003118 aryl group Chemical group 0.000 claims description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 125000004185 ester group Chemical group 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 125000005587 carbonate group Chemical group 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 4
- 235000000346 sugar Nutrition 0.000 claims description 4
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- 239000002798 polar solvent Substances 0.000 claims description 3
- 239000004584 polyacrylic acid Substances 0.000 claims description 3
- 229920001281 polyalkylene Polymers 0.000 claims description 3
- 229920001289 polyvinyl ether Polymers 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 150000005622 tetraalkylammonium hydroxides Chemical class 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 abstract description 32
- 230000007062 hydrolysis Effects 0.000 abstract description 18
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000243 solution Substances 0.000 description 44
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 40
- 239000011248 coating agent Substances 0.000 description 31
- 238000000576 coating method Methods 0.000 description 31
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 27
- 229920001223 polyethylene glycol Polymers 0.000 description 26
- 239000002202 Polyethylene glycol Substances 0.000 description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 22
- 239000011259 mixed solution Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 20
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 20
- 238000001035 drying Methods 0.000 description 19
- 239000012788 optical film Substances 0.000 description 17
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 16
- 229920002799 BoPET Polymers 0.000 description 16
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 16
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 15
- 230000003287 optical effect Effects 0.000 description 14
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 239000004698 Polyethylene Substances 0.000 description 12
- 238000002454 metastable transfer emission spectrometry Methods 0.000 description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 description 12
- 239000005020 polyethylene terephthalate Substances 0.000 description 12
- 239000010703 silicon Substances 0.000 description 12
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 11
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000011521 glass Substances 0.000 description 10
- 229920000573 polyethylene Polymers 0.000 description 10
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000012046 mixed solvent Substances 0.000 description 9
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 9
- 235000012239 silicon dioxide Nutrition 0.000 description 9
- 239000002356 single layer Substances 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 238000009833 condensation Methods 0.000 description 8
- 230000005494 condensation Effects 0.000 description 8
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 7
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 7
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 7
- 125000001931 aliphatic group Chemical group 0.000 description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 description 7
- 229920001400 block copolymer Polymers 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 239000010419 fine particle Substances 0.000 description 7
- 239000001087 glyceryl triacetate Substances 0.000 description 7
- 235000013773 glyceryl triacetate Nutrition 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229940043265 methyl isobutyl ketone Drugs 0.000 description 7
- 238000002310 reflectometry Methods 0.000 description 7
- 229960002622 triacetin Drugs 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005227 gel permeation chromatography Methods 0.000 description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 229910021426 porous silicon Inorganic materials 0.000 description 6
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 6
- 238000004528 spin coating Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 229920002873 Polyethylenimine Polymers 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 150000001298 alcohols Chemical class 0.000 description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 229920001451 polypropylene glycol Polymers 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Natural products CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- 150000004703 alkoxides Chemical class 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 235000010980 cellulose Nutrition 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 4
- 125000005372 silanol group Chemical group 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- BGQMOFGZRJUORO-UHFFFAOYSA-M tetrapropylammonium bromide Chemical compound [Br-].CCC[N+](CCC)(CCC)CCC BGQMOFGZRJUORO-UHFFFAOYSA-M 0.000 description 4
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 3
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 150000002576 ketones Chemical class 0.000 description 3
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 229920006289 polycarbonate film Polymers 0.000 description 3
- 239000003505 polymerization initiator Substances 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 2
- ZVEFSPOBLXDNHO-UHFFFAOYSA-N 3,4-diethylhexan-3-yloxysilane Chemical compound CCC(CC)C(CC)(CC)O[SiH3] ZVEFSPOBLXDNHO-UHFFFAOYSA-N 0.000 description 2
- 239000004953 Aliphatic polyamide Substances 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 239000004386 Erythritol Substances 0.000 description 2
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- PMDCZENCAXMSOU-UHFFFAOYSA-N N-ethylacetamide Chemical compound CCNC(C)=O PMDCZENCAXMSOU-UHFFFAOYSA-N 0.000 description 2
- WXAYTPABEADAAB-UHFFFAOYSA-N Oxyphencyclimine hydrochloride Chemical compound Cl.CN1CCCN=C1COC(=O)C(O)(C=1C=CC=CC=1)C1CCCCC1 WXAYTPABEADAAB-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
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- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
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- 125000004122 cyclic group Chemical group 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
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- 235000019414 erythritol Nutrition 0.000 description 2
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 2
- 229940009714 erythritol Drugs 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N ethylene glycol monomethyl ether acetate Natural products COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- 150000007529 inorganic bases Chemical class 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
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- 150000002825 nitriles Chemical class 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 150000007530 organic bases Chemical class 0.000 description 2
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- 150000002500 ions Chemical class 0.000 description 1
- GKQPCPXONLDCMU-CCEZHUSRSA-N lacidipine Chemical compound CCOC(=O)C1=C(C)NC(C)=C(C(=O)OCC)C1C1=CC=CC=C1\C=C\C(=O)OC(C)(C)C GKQPCPXONLDCMU-CCEZHUSRSA-N 0.000 description 1
- LZCLXQDLBQLTDK-UHFFFAOYSA-N lactic acid ethyl ester Natural products CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 239000008101 lactose Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 1
- ZEIWWVGGEOHESL-UHFFFAOYSA-N methanol;titanium Chemical compound [Ti].OC.OC.OC.OC ZEIWWVGGEOHESL-UHFFFAOYSA-N 0.000 description 1
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 1
- BKXVGDZNDSIUAI-UHFFFAOYSA-N methoxy(triphenyl)silane Chemical compound C=1C=CC=CC=1[Si](C=1C=CC=CC=1)(OC)C1=CC=CC=C1 BKXVGDZNDSIUAI-UHFFFAOYSA-N 0.000 description 1
- GNARHXWTMJZNTP-UHFFFAOYSA-N methoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[SiH2]CCCOCC1CO1 GNARHXWTMJZNTP-UHFFFAOYSA-N 0.000 description 1
- REQXNMOSXYEQLM-UHFFFAOYSA-N methoxy-dimethyl-phenylsilane Chemical compound CO[Si](C)(C)C1=CC=CC=C1 REQXNMOSXYEQLM-UHFFFAOYSA-N 0.000 description 1
- ALPYWOWTSPQXHR-UHFFFAOYSA-N methoxy-methyl-diphenylsilane Chemical compound C=1C=CC=CC=1[Si](C)(OC)C1=CC=CC=C1 ALPYWOWTSPQXHR-UHFFFAOYSA-N 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- CQDGTJPVBWZJAZ-UHFFFAOYSA-N monoethyl carbonate Chemical compound CCOC(O)=O CQDGTJPVBWZJAZ-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000002772 monosaccharides Chemical class 0.000 description 1
- ZAMGIWPHWYDZSQ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine;hydrobromide Chemical compound [Br-].CCCCCCCC[NH+](CCCCCCCC)CCCCCCCC ZAMGIWPHWYDZSQ-UHFFFAOYSA-N 0.000 description 1
- IUSOXUFUXZORBF-UHFFFAOYSA-N n,n-dioctyloctan-1-amine;hydrochloride Chemical compound [Cl-].CCCCCCCC[NH+](CCCCCCCC)CCCCCCCC IUSOXUFUXZORBF-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- YTFWLHUVTFANOU-UHFFFAOYSA-N n-ethylformamide Chemical compound [CH2]CNC=O YTFWLHUVTFANOU-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 150000002924 oxiranes Chemical class 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000765 poly(2-oxazolines) Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000379 polypropylene carbonate Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- PWFXLXMPGSLEOZ-UHFFFAOYSA-N precursor Z Chemical compound O1C2COP(O)(=O)OC2C(=O)C2C1NC(N=C(NC1=O)N)=C1N2 PWFXLXMPGSLEOZ-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- XPGAWFIWCWKDDL-UHFFFAOYSA-N propan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCC[O-].CCC[O-].CCC[O-].CCC[O-] XPGAWFIWCWKDDL-UHFFFAOYSA-N 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- FESBVLZDDCQLFY-UHFFFAOYSA-N sete Chemical compound [Te]=[Se] FESBVLZDDCQLFY-UHFFFAOYSA-N 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- ZIJKGAXBCRWEOL-UHFFFAOYSA-N sucrose octaacetate Chemical compound CC(=O)OC1C(OC(C)=O)C(COC(=O)C)OC1(COC(C)=O)OC1C(OC(C)=O)C(OC(C)=O)C(OC(C)=O)C(COC(C)=O)O1 ZIJKGAXBCRWEOL-UHFFFAOYSA-N 0.000 description 1
- 229940013883 sucrose octaacetate Drugs 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 1
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 1
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- ZUEKXCXHTXJYAR-UHFFFAOYSA-N tetrapropan-2-yl silicate Chemical compound CC(C)O[Si](OC(C)C)(OC(C)C)OC(C)C ZUEKXCXHTXJYAR-UHFFFAOYSA-N 0.000 description 1
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 description 1
- BCLLLHFGVQKVKL-UHFFFAOYSA-N tetratert-butyl silicate Chemical compound CC(C)(C)O[Si](OC(C)(C)C)(OC(C)(C)C)OC(C)(C)C BCLLLHFGVQKVKL-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- MYWQGROTKMBNKN-UHFFFAOYSA-N tributoxyalumane Chemical compound [Al+3].CCCC[O-].CCCC[O-].CCCC[O-] MYWQGROTKMBNKN-UHFFFAOYSA-N 0.000 description 1
- KLBOFRLEHJAXIU-UHFFFAOYSA-N tributylazanium;chloride Chemical compound Cl.CCCCN(CCCC)CCCC KLBOFRLEHJAXIU-UHFFFAOYSA-N 0.000 description 1
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 description 1
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- NBXZNTLFQLUFES-UHFFFAOYSA-N triethoxy(propyl)silane Chemical compound CCC[Si](OCC)(OCC)OCC NBXZNTLFQLUFES-UHFFFAOYSA-N 0.000 description 1
- YYJNCOSWWOMZHX-UHFFFAOYSA-N triethoxy-(4-triethoxysilylphenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=C([Si](OCC)(OCC)OCC)C=C1 YYJNCOSWWOMZHX-UHFFFAOYSA-N 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- WYSYKUDDULIZNW-UHFFFAOYSA-N trimethoxy(silyl)silane Chemical compound CO[Si]([SiH3])(OC)OC WYSYKUDDULIZNW-UHFFFAOYSA-N 0.000 description 1
- DJYGUVIGOGFJOF-UHFFFAOYSA-N trimethoxy(trimethoxysilylmethyl)silane Chemical compound CO[Si](OC)(OC)C[Si](OC)(OC)OC DJYGUVIGOGFJOF-UHFFFAOYSA-N 0.000 description 1
- UAEJRRZPRZCUBE-UHFFFAOYSA-N trimethoxyalumane Chemical compound [Al+3].[O-]C.[O-]C.[O-]C UAEJRRZPRZCUBE-UHFFFAOYSA-N 0.000 description 1
- HLOLETUOZGAKMT-UHFFFAOYSA-N trimethoxysilyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)OC(=O)C(C)=C HLOLETUOZGAKMT-UHFFFAOYSA-N 0.000 description 1
- SZYJELPVAFJOGJ-UHFFFAOYSA-N trimethylamine hydrochloride Chemical compound Cl.CN(C)C SZYJELPVAFJOGJ-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000000811 xylitol Substances 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/14—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
Definitions
- the present invention relates to a coating composition for forming a low refractive index thin film. More specifically, the present invention relates to a fluid silica precursor obtained by hydrolytic polycondensation of a specific alkoxysilane in the presence of an acid catalyst (A) having a basic hydroxyl group and / or a basic nitrogen atom.
- a basic compound having a pH of 11 or more in the form of a 0.1N aqueous solution and a vapor pressure at 100 ° C of 1.3 kPa or less.
- a coating composition comprising a compound (B) and an organic compound (C) having a boiling point of 100 ° C.
- the Si atom in the fluid silica precursor (A) It relates to a composition characterized in that the amount is 0.0015 to 0.5 mol per 1 mol.
- the present invention also relates to a porous silica thin film obtained from the coating composition. Since the porous silica thin film of the present invention has a low refractive index, a high light transmittance, and a high strength, it is advantageously used as an antireflection film.
- Silica is a material having excellent light transmittance over a wide wavelength range and a relatively low refractive index of about 1.45. By introducing voids into this silica to form porous silica, a material having a lower refractive index can be obtained.
- porous silica thin film having a low refractive index using porous silica fine particles As a method for producing a porous silica thin film having a low refractive index using porous silica fine particles, the following method is known. (1) By preparing porous silica fine particles in advance and immobilizing them on a substrate using a binder, the porous silica fine particles are bonded via a binder. Method of lowering refractive index by forming a thin film having a porous structure
- the methods (1) to (3) have the following problems. You. In the above method (1), it is necessary to add a binder in order to increase the adhesive strength between the particles and the optical substrate, thereby increasing the porosity. There is a problem that a thin film with a low refractive index cannot be obtained. In the above method (2), in order to obtain the required porosity, it is necessary to increase the degree of condensation under high-temperature curing conditions to increase the shrinkage of the particles. Sheet and optical film substrates have the problem that films with sufficient strength (pencil hardness and adhesive strength to the substrate) cannot be manufactured. In the above method (3), the linear silica polymer prepared with an acid catalyst and the porous silica fine particles prepared with a basic catalyst are used as two components. In addition to the difference in the rate, it is necessary to increase the content of porous silica particles, so that the scattering of light by those particles cannot be ignored and the light transparency is impaired (haze value exceeding 1) ).
- the methods (1) to (3) cannot produce a porous silica thin film having a low refractive index, a high light transmittance, and a high strength on an optical film substrate or an optical sheet substrate. .
- the following method is known as a method for producing a porous silica thin film having a low refractive index and high light transmission without using porous silica fine particles.
- Japanese Patent Application Laid-Open No. HEI 3-19943 discloses a monoalkyltrialkoxysilane, a polyester and a solvent (water, ethanol, etc.).
- a coating solution consisting of a mixture of ethanol and 1-butanol
- the polyether in the thin film is eluted with ethanol to make it porous.
- an inorganic acid or an organic acid is used as a curing acceleration catalyst, so that a sufficient degree of curing cannot be obtained during film formation, the strength is insufficient, and polyether is used.
- the problem is that the thin film swells and peels off from the substrate when extracting water.
- alkoxysilane is hydrolyzed and polycondensed in the first stage under non-catalytic conditions, and the chain silica polymer component is small. Even if curing is performed by adding a basic catalyst, a strong three-dimensional silica network cannot be formed. When the material is extracted and dried, the porous film shrinks and the refractive index is insufficient.
- porous silica particles grow, but they do not contain a linear silica polymer. It does not form a homogeneous silica Z-porous material composite with the porous material. Even after the extraction treatment, the porous silica particles that have grown scatter the porous silica particles and have low light transmission. In addition, there is a case where the precipitate precipitates before application (see Comparative Example 8 of the present application).
- a fluid silica precursor (A) obtained by hydrolytic polycondensation of a specific alkoxysilane in the presence of an acid catalyst, a basic compound having a basic hydroxyl group and Z or a basic nitrogen atom
- a basic compound (B) having a pH of 11 or more in the form of a 0.1 N aqueous solution and a vapor pressure at 100 ° C of 1.3 kPa or less
- a coating composition comprising an organic compound (C) having a boiling point of 100 ° C. or higher and being compatible with the fluid silica precursor (A), wherein the basic compound
- one object of the present invention is to provide a coating composition for producing a porous silica thin film having a low refractive index, high light transmittance, and high strength.
- Another object of the present invention is to provide a method comprising using the coating composition. It is an object of the present invention to provide a porous silica thin film having low refractive index, high light transmittance and high strength.
- FIG. 1 is a graph showing the measurement results of the reflectance of a polyethylene terephthalate (PET) film and the PET film coated with the porous silica thin film obtained in Example 1;
- 2 is a graph showing the measurement results of the transmittance of a polyethylene terephthalate (PET) film and the PET film coated with the porous silica thin film obtained in Example 1.
- PET polyethylene terephthalate
- each R 1 is independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, a vinyl group, a vinyl group, An organic group having 4 to 10 carbon atoms or an epoxy group having a (meth) acryloyl group Represents an organic group having 3 to 10 carbon atoms, each R 2 independently represents an alkyl group having 1 to 6 carbon atoms, and n represents an integer of 0 to 2)
- each R 3 independently represents an alkyl group having 1 to 6 carbon atoms
- R 4 represents an alkylene group having 1 to 6 carbon atoms or an arylene group having 6 to 10 carbon atoms
- m represents 0 Or
- (B) a basic compound having at least one kind selected from the group consisting of a basic hydroxyl group and a basic nitrogen atom, provided that a 0.1-N aqueous solution of the basic compound (B) is prepared.
- H is 11 or more
- the vapor pressure of the basic compound (B) at 100 ° C. is 1.3 kPa or less
- composition characterized by having a molar ratio of 0.0015 to 0.5 mol per 1 mono atom of Si atom in (A).
- each R 1 is independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, a bier group, a carbon atom having 3 to 10 carbon atoms having a vinyl group.
- 1 0 organic group, (meth) represent ⁇ click Li b I le number of 3 to 1 0 the organic group having a carbon having an organic group or an epoxy group with carbon number 4-1 0 having a group, each R 2 Germany respectively Represents an alkyl group having 1 to 6 carbon atoms, and n represents an integer of 0 to 2)
- a first alkoxysilane represented by the following formula, and the following formula (2):
- each R 3 independently represents an alkyl group having 1 to 6 carbon atoms
- R 4 represents an alkylene group having 1 to 6 carbon atoms or an arylene group having 6 to 10 carbon atoms
- m represents 0 or
- (B) a basic compound having at least one selected from the group consisting of a basic hydroxyl group and a basic nitrogen atom, provided that the pH of a 0.1 N aqueous solution of the basic compound (B) is 11 Above And the vapor pressure of the basic compound (B) at 100 ° C. is 1.3 kPa or less, and
- composition characterized in that the amount is 0.0015 to 0.5 mol per 1 mol of Si atoms in the composition.
- the organic compound (C) is at least one kind of polar group selected from the group consisting of a ether group, an ester group, a carbonyl group, a carboxyl group, a carboxyl group, an amide group and a hydroxyl group. 3.
- the organic compound (C) is a polyhydric alcohol or saccharide having at least three hydroxyl groups in the molecule, or at least one of the hydroxyl groups of the polyhydric alcohol or saccharide is esterified. Characterized in that the resulting ester is Item 6.
- the organic compound (C) is a polyether, a polyester, a polycarbonate, a polyamide, a cellulose, a polyvinyl alcohol, a polyvinyl alcohol, a polyvinyl pyrrolidone, a polyacrylamide, or a polyacrylamide.
- the coating composition according to item 3 wherein the coating composition is at least one polymer selected from the group consisting of lylic acid.
- the basic compound (B) comprises sodium hydroxide, potassium hydroxide, tetraalkylammonium hydroxide and a polyalkylene mine having a weight average molecular weight of 130 or more.
- the coating composition according to any one of items 1 to 7, wherein the coating composition is at least one compound selected from the group.
- the amount of the basic compound (B) in the basic compound (B) In terms of the total amount of the basic hydroxyl group and the basic nitrogen atom of the flowable silica precursor (A), the amount is 0.005 to 0.08 mol per 1 mol of the Si atom.
- the solvent (D) is characterized in that it contains a high-boiling solvent having a hydroxyl group and a boiling point of at least 100 ° C. in an amount of 5% by weight or more based on the weight of the coating composition.
- the composition further comprises a tetraalkylammonium salt (E) in an amount of 1 to 50 parts by weight based on 100 parts by weight of the fluid silica precursor (A).
- a tetraalkylammonium salt (E) in an amount of 1 to 50 parts by weight based on 100 parts by weight of the fluid silica precursor (A).
- the coating composition according to any one of the above items 1 to 11.
- the coating composition of the present invention contains a flowable silica precursor (A), a basic compound (B), and an organic compound (C) as essential components.
- the flowable silica precursor (A) has the following formula (1):
- each R 1 is independently a hydrogen atom, carbon number 1 to 10
- each R 2 independently represents an alkyl group having 1 to 6 carbon atoms
- n is an integer of 0 to 2 Represents
- each R 3 independently represents an alkyl group having 1 to 6 carbon atoms
- R 4 represents an alkylene group having 1 to 6 carbon atoms or an arylene group having 6 to 10 carbon atoms.
- m is 0 or 1) at least one alkoxysilane selected from the group consisting of the second alkoxysilanes represented by It is a flowable silica precursor obtained by condensation.
- the first alkoxysilane represented by the above formula (1) will be described.
- S i (0R 2 ) 4 is referred to as a tetrafunctional alkoxysilane.
- n is 1, that is, R 1 (S i) ( ⁇ R 2 ) 3 is referred to as a trifunctional alkoxysilane.
- n is 2, that is, R (S i) ( ⁇ R 2 ) 2 is referred to as a bifunctional alkoxysilane.
- alkyl group having 1 to 10 carbon atoms as R ′ in the formula (1) include a methyl group, an ethyl group, a propyl group, an isobutyl group, and a cyclohexyl group. 6 to 1 carbon atoms
- aryl group having 0 include a phenyl group and a tolyl group.
- organic group having 3 to 10 carbon atoms having a vinyl group include an aryl group and A propenyl group, a 1-butenyl group, a 2-butenyl group, and a 3-butenyl group
- organic group having 4 to 10 carbon atoms and having a (meth) acryloyl group include: Carbon having an epoxy group, such as an acryloxymethyl group, an acryloxyethoxy group, an acryloxypropyl group, a methacryloxymethyl group, a methacryloxypropyl group, and a methacryloxypropyl group
- Specific examples of the organic group represented by the formulas 3 to 10 include 2,3-epoxypropyl group, 3,4-epoxybutyl group 4,5-epoxypentyl group, and 5,6-epoxyhexyl group 3,4 —Epoxy hexyl group, and 3 — It is and this include the Dokishi pro-pill group.
- alkyl group having 1 to 6 carbon atoms as R 2 in the formula (1) include a methyl group, a propyl group, an isopropyl group, an isopropyl group, and a cyclohexyl group. Groups can be mentioned.
- tetrafunctional alkoxysilane examples include tetramethoxysilane, tetraethoxysilane, tetra (n-propoxy) silane, tetraisopropoxysilane and tetra (n). (Butoxy) silane and tetra (t-butoxy) silane.
- trifunctional alkoxysilane examples include trimethoxysilane, triethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltrimethylsilane.
- Toxisilane ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, isobutyltriethoxysilane, cyclohexyltrimethoxysilane, phenyltrimethoxysilane , Phenyltriethoxysilane, pinyltrimethoxysilane, vinyltriethoxysilane, aryltrimethoxysilane, aryloletriethoxysilane, r-acryloxypropyl trimethoxysilane And methacryloxytrimethoxysilane, and glycidoxypropyl methoxysilane.
- alkoxysilane examples include dimethyldimethoxysilane, dimethyljetethoxysilane, diphenyldimethoxysilane, diphenylethoxysilane and the like. These alkoxysilanes may be used alone or in combination of two or more. Among these alkoxysilanes, tetramethoxysilane, tetraethoxysilane, trimethoxysilane, triethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, dimethyldimethoxysilane Dimethyl ethoxysilane is particularly preferred.
- the second alkoxysilane represented by the above formula (2) will be described.
- the second alkoxysilanes are ones in which two trifunctional alkoxysilanes are bonded directly or via an alkylene group or a arylene group. '
- An alkyl having 1 to 6 carbons as R 3 in the formula (2) Specific examples of the group include a methyl group, an ethyl group, a propyl group, an isobutyl group, and a cyclohexyl group. Also, the expression '
- alkylene group having 1 to 6 carbon atoms as R 4 in (2) include a methylene group, an ethylene group, a propylene group, a butylene group, an isobutylene group, and a cycloalkyl group.
- a xyl group is mentioned.
- an arylene group having 6 to 10 carbon atoms a phenylene-group 2 —methyl-1,4, -phenylene group and 2,5-dimethyl-1, 4 — phenylene group.
- a specific example of the second alkoxysilane is bis
- Examples include (trimethoxysilyl) benzene, 1,4-bis (triethoxysilyl) benzene, bis (trimethoxy) disilane, bis (triethoxy) disilane, and the like. These alkoxysilanes may be used alone or as a mixture of two or more. Among these alkoxysilanes, bis (trimethoxysilyl) methane, bis (triethoxyethoxysilyl) methane, 1,2—bis (trimethoxysilyl) ethane, 1,2 2-bis (triethoxysilyl) ethane is particularly preferred.
- the first alkoxysilane it is preferable to use the first alkoxysilane.
- the first alkoxysilane and the second alkoxysilane it is more preferable to use a combination of these compounds, since the adhesion between the obtained thin film and the substrate can be further enhanced.
- a porous silicon thin film obtained using only a trifunctional first alkoxysilane compared to a porous silicon thin film obtained using only a trifunctional first alkoxysilane, a porous silicon thin film obtained by using a trifunctional first alkoxysilane and a second alkoxysilane in combination is used.
- the probability that an alkyl group having a weak bonding force with the substrate is present at the bonding interface with the substrate can be reduced, and the adhesion between the thin film and the substrate is expected to be further enhanced.
- the amount of the second alkoxysilane is preferably 5 to 5 parts by weight based on 100 parts by weight of the first alkoxysilane. 100 parts by weight, more preferably 10 to 400 parts by weight, and even more preferably 20 to 300 parts by weight. If the amount is less than 5 parts by weight, the above-mentioned effect of further improving the adhesiveness cannot be obtained.
- a first alkoxysilane and a Z or a second alkoxysilane are used to modify the obtained porous silica thin film for the purpose of improving the smoothness of the thin film surface and improving the moisture resistance of the thin film.
- Specific examples of such monofunctional alkoxysilanes include trimethyl methoxy silane, trimethyl ethoxy silane, triphenyl methoxy silane, triphenyl ethoxy silane, phenyl dimethyl methoxy silane, phenyl dimethyl silane. Examples include luethoxysilane, diphenylmethylmethoxysilane, and diphenylmethylethoxysilane.
- the amount of these monofunctional alkoxylans should be 0.2 mol or less based on 1 mol of alkoxysilane in total.
- the adhesion to the substrate may be reduced during film formation, or a thin film having a low refractive index may not be obtained.
- metal alkoxides other than Si are used as long as the performance of the low refractive index is not impaired.
- alkoxides such as aluminum, titanium and zirconium.
- alkoxides include trimethoxyaluminum, triethoxyaluminum, tripropoxyaluminium, tributoxyaluminum, tetramethoxytitanium, tetramexititan, Tetrapropoxy titan, tetralaboxy titan, tetrapropyl zirconate, tetrabutyl zirconate, and the like.
- the amount of the metal alkoxide other than Si added to the composition of the present invention is i It should be less than 0.2 mole per mole of atom. When the amount exceeds 0.2 mol, high transparency may not be obtained or low refractive index may not be obtained when the film is formed.
- the fluid silica precursor (A) comprises at least one alkoxysilane selected from the group consisting of the first alkoxysilanes and the second alkoxysilanes described above. Presence of acid catalyst It is obtained by hydrolysis polycondensation below.
- the flowable silica precursor (A) is a linear silica polymer.
- the linear silica polymer includes not only a single-chain linear silica polymer but also a polymer having a ladder structure or a branched structure.
- the formula (5.5) described on page 58 of “Science of Sol-Gel Method” published by Agune Seifusha Co., Ltd., Japan, 1988) is available.
- the weight average molecular weight of the flowable silica precursor (A) is usually 1,500 to 200,000, preferably 2,000 to 10,000, more preferably. Or 2,500 to 50,000, 0000, and more preferably 5,000 to 50,000, 0000. If the weight average molecular weight is less than 1,500, the resulting porous silica thin film will have insufficient low refractive index, high light transmittance, and insufficient strength. If it exceeds 0, the possibility of containing insoluble components (silica particles, which will be described later) increases, and the porous silica thin film is used. The high light transmission of the film may be insufficient.
- the weight average molecular weight is a value in terms of standard monodisperse polyethylene glycol as determined by gel permeation chromatography.
- silica is formed by curing the fluid silica precursor (A).
- sica refers to a three-dimensionally linked strong siloxane bond formed by converting a silanol group in a flowable silica precursor (A) into a siloxane bond by a condensation reaction. A solid that has a network and therefore does not have fluidity. It is impossible to measure the molecular weight of such a force.
- the coating composition of the present invention comprises a flowable silica precursor.
- the organic compound (C) is compatible with the fluid silica precursor (A), in the thin film of the coating composition, the organic compound (C) is uniformly dispersed in the fluid silica precursor (A). ing. Since the basic compound (B) has silica condensing ability, a cured thin film made of the above-mentioned silica can be obtained by curing a thin film of the coating composition. In addition, the organic compound (C) acts as a pore opening agent
- the acid catalyst used for the hydrolysis polycondensation of the alkoxysilane is not particularly limited as long as it is an acid. Specific examples include hydrochloric acid, nitric acid, phosphoric acid, acetic acid, oxalic acid, phthalic acid, benzoic acid, p-toluenesulfonic acid, and a cation exchange resin.
- the cation exchange resin a strongly acidic cation exchange resin having a sulfonic acid functional group or a weakly acidic cation exchange resin having a carboxylic acid functional group is preferable, and the functional group is used in a hydrogen ion type.
- the amount is preferably from 0.0001 to 0.1 mol, more preferably from 0.0001 to 0.1 mol, per mol of the silicon atom contained in the alkoxysilane. 0.11 mol (when the acid catalyst is a cation exchange resin, the molar amount of the acid catalyst is represented by the molar amount of the ion exchange group). If the amount of the acid catalyst is less than 0.001 mol, the production of the chain silica polymer may not proceed sufficiently.
- the amount of water to be added is generally 1 to 100 mol, preferably 1 to 10 mol, per 1 mol of the alkoxy group contained in the alkoxysilane. Above 100 moles, flowable silica precursor
- the generation speed of (A) may decrease.
- the cation exchange resin is removed by a known method such as filtration after preparing the fluidized silica precursor (A).
- a plurality of alkoxysilanes may be mixed and hydrolyzed and polycondensed simultaneously with an acid catalyst, or each may be used alone.
- the above alkoxysilanes may be mixed after being subjected to hydrolysis polycondensation with an acid catalyst.
- the basic compound (B) has at least one selected from the group consisting of a basic hydroxyl group and a basic nitrogen atom.
- Basic nitrogen An element atom means a nitrogen atom contained in a basic nitrogen-containing functional group.
- the nitrogen atom in the basic compound represented by the following formula (3) is not a basic nitrogen atom.
- the basic compound represented by the formula (3) has a basic hydroxyl group.
- the pH of a 0.1 N aqueous solution of the basic compound (B) is 11 or more.
- the 0.1 N aqueous solution of the basic compound (B) refers to the basic compound (B) such that the total number of moles of the basic hydroxyl group and the basic nitrogen atom in the aqueous solution is 0.1 mol dm 3. ) In water.
- the pH of the aqueous solution is a value measured at room temperature of about 20 ° C. using a normal pH meter. If the pH is lower than 11, a sufficient degree of condensation cannot be obtained, and the thin film may peel off from the substrate or a thin film having a low refractive index may not be obtained.
- the vapor pressure of the basic compound (B) at 100 ° C. may increase when the composition is stored. It must be less than or equal to 0.8 kPa, preferably less than or equal to 0.4 kPa.
- the vapor pressure at 100 ° C exceeds 1.3 kPa, a thin film with a low refractive index cannot be obtained. The reason is that when a basic compound having a vapor pressure of more than 1.3 kPa at 100 ° C is used, sufficient curing condensation occurs because the basic compound volatilizes in the curing step described below. This is probably because the degree cannot be obtained.
- R 5 , R 6 , R 7 , and R 8 independently represent an alkyl group having 1 to 10 carbon atoms, each of which is bonded to a nitrogen atom
- the basic compound represented by the formula has substantially no vapor pressure (the ionicity is high in the solution, the ions are separated, and the vapor pressure is almost 0). It is also assumed that the vapor pressure at 100 ° C is less than 1.3 kPa.
- the vapor pressure of basic compounds is determined by the boiling point method described on page 381 of “The 4th Edition Experimental Chemistry Lecture 4 Heat and Pressure” (edited by The Chemical Society of Japan, published by Nippon Kuni Maruzen Co., Ltd. in 1992). Measure according to The basic compound having no boiling point at 100 kPa and 100 kC has a vapor pressure at 100 kC lower than 0.1 kPa. In the case of ammonia water, the vapor pressure exceeds 13 kPa because ammonia is volatile.
- Preferred examples of the basic compound (B) include an inorganic base, tetraalkylammonium hydroxide, and an organic base.
- inorganic bases include sodium hydroxide, sodium hydroxide, and lithium hydroxide.
- Tetraalkylan Examples of monoxide batteries include tetramethylammonium hydroxide, tetraethylammonium hydroxide, and tetrapropyrammonium. And 2-hydroxyl-shetyl trimethylammonium hydrochloride.
- organic bases are those having a weight average molecular weight of 130,000, preferably 130,500, more preferably 130,010,000 Of polyalkylene imide.
- Such a polyalkyleneimine include dipropylene triamine, triethylenetetramamine, tetraethylenepentyne, and a weight-average molecular weight obtained by polymerizing ethyleneimine. 100 000, preferably 20000, 000, and more preferably 20000, 000, linear or branched polyethyleneimine.
- the amount of the basic compound (B) is converted into the total molar amount of the basic hydroxyl group and the basic nitrogen atom in the basic compound (B), and is calculated as S i in the fluidized silica precursor (A). It is 0.00150.5 mole, preferably 0.020.2 mole, and more preferably 0.0500.08 mole per mole of atom. If the amount of the basic compound (B) is less than 0.0015 mol, the silica thin film may peel off from the substrate during extraction, or a thin film having a low refractive index may not be obtained. Also, basic compounds
- the resulting porous silica The light transmittance of the force thin film may decrease. If the amount of the acid catalyst remaining in the flowable silica precursor (A) is as large as 0.1 mol or more with respect to 1 mol of the Si atom in the flowable silica precursor (A), the base may be changed to a base.
- the basic compound (B) may be added by adding an acid equivalent for neutralization to 0.5 mol of the upper limit of the amount of the basic compound (B).
- the total molar amount of basic hydroxyl groups and basic nitrogen atoms in the basic compound with respect to 1 mol of all Si atoms contained in the flowable silica precursor is calculated from the amount of alkoxysilane used and the amount of basic compound added. .
- the organic compound (C) will be described.
- the organic compound (C) has a boiling point of at least 100 ° C, preferably at least 150 ° C, more preferably at least 200 ° C, and even more preferably at least 250 ° C.
- the boiling point is a value at normal pressure. It is considered that compounds having substantially no boiling point have a boiling point of 100 ° C or more.
- an organic polymer does not substantially exhibit a boiling point because it is thermally decomposed as the temperature is increased, but such an organic polymer is also considered to be a compound having a boiling point of 100 ° C. or higher.
- Organic compound (C) is compatible with the flowable silica precursor (A) Must be something.
- the fact that the organic compound (C) is compatible with the flowable silicic acid precursor (A) means that both are mixed at the molecular size level. If they are not compatible, the resulting porous silica thin film will have reduced light transmittance.
- the temperature at which the organic compound (C) is compatible with the flowable silica precursor (A) is preferably in the range from room temperature to the film formation temperature.
- Examples of the compound compatible with the fluid silica precursor (A) include a compound having a functional group or a bond compatible with a silanol group through hydrogen bonding.
- Examples of the organic compound (C) include an organic compound having at least one polar group selected from the group consisting of an ether group, an ester group, a carbonyl group, a carboxyl group, a carbonate group, an amide group, and a hydroxyl group. Can be mentioned.
- the amide group mentioned here is a general term for a group represented by one C ⁇ NH 2 , —C ⁇ NH—, and one CON.
- organic compound (C) examples include polyether, polyester, polycarbonate, polyamide, cellulose, polyvinyl alcohol, polyvinyl ether, polyvinylpyrrolidone, polyacrylamide, and polyacrylic acid. Can be mentioned.
- an aliphatic polyether having an ether group having 2 to 12 carbon atoms as a repeating unit is preferable.
- the above polyesters have 2 to 12 carbon atoms. Aliphatic polyesters having a stell group as a repeating unit are preferred.
- an aliphatic polycarbonate having a carbonate group having 2 to 12 carbon atoms as a repeating unit is preferable.
- an aliphatic polyamide having an amide group having 2 to 12 carbon atoms as a repeating unit is preferable.
- the above-mentioned polymers may be used alone or as a mixture.
- the main chain of the polymer may contain any monomer unit other than the above-mentioned repeating unit as long as the effect of the present invention is not impaired.
- aliphatic polyethers are polyethylene glycol, polypropylene glycol, polytrimethylene glycol, polytetramethylene glycol, polypentamethylene glycol, polyhexamethylene glycol, Examples thereof include polyalkylene glycols such as polydioxolan and polydioxepane.
- copolymers which may be copolymers include polyethylene glycol-polypropylene glycol block copolymer, polyethylene glycol-polypropylene tetramethylene glycol block copolymer, polyethylene glycol-polypropylene glycol. Coal-polyethylene glycol copolymer.
- polyethylene glycol, polypropylene glycol, polyethylene glycol-polypropylene glycol block copolymer, polyethylene glycol-polypropylene Retramethylene glycol block copolymers, polyethylene glycol copolymer glycol-polyethylene glycol block copolymers are preferred. More preferably, all the terminals of the aliphatic polyether have an alkoxy group having 1 to 12 carbon atoms, and specific examples thereof include polyethylene glycol, polypropylene and the like.
- glycol Lethylene glycol, polyethylene glycol, polypropylene block copolymer, polyethylene glycol-polyethylene ramethylene glycol block copolymer, polyethylene glycol copolymer
- glycol and polyethylene glycol block copolymers have methyl ether, ethyl ether, propyl ether, pentyl ether, hexyl ether, heptyl ether, and octyl ether.
- the most preferred aliphatic polyether is polyethylene glycol dimethyl ether.
- Examples thereof include polycondensates of hydroxycarboxylic acids such as polyglycolide, ring-opening polymers of lactones such as polycaprolactone, and polypivalolactone, and polyolefins.
- Dicarboxylic acids such as ethylene oxide, poly (ethylene succinate), poly (ethylene adipate), poly (ethylene sevagate), poly (propylene adipate), poly (oxydiethylene adsorbate), etc.
- Examples include a polycondensation product with alkylene glycol, a ring-opening copolymer of an epoxide and an acid anhydride, and the like.
- the above-mentioned alkylene glycol means a dihydric alcohol obtained by substituting two hydrogen atoms which are not bonded on the same carbon atom of an alkane having 2 or more carbon atoms with hydroxyl groups.
- Dicarboxylic acid refers to an organic acid having two lipoxyl groups such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, and sebacic acid. means.
- aliphatic polycarbonates examples include polyethylene carbonates, polypropylene carbonates, polypentamethylene carbonates, and polyhexamethylene carbonates. Can be.
- Examples of the aliphatic polyamide include a polyoxazoline derivative, a polyimide derivative, a polyurethan derivative, a polyurea derivative, a nylon derivative, and a mixture thereof. Can be done.
- any polymer other than those described above may be added for the purpose of, for example, adjusting viscosity or improving coating characteristics.
- the weight average molecular weight of the polymer is usually from 200 to 100,000, preferably from 300 to 800,000, more preferably from 400 to 500,000. . When the weight average molecular weight is less than 200, the polymer component is easily separated in the coating step or the curing step, and a thin film having fine pores may not be obtained.
- the weight average molecular weight is a value in terms of standard monodisperse polyethylene glycol as determined by gel permeation chromatography.
- the organic compound (C) contains at least three hydroxyl groups in the molecule in order to further increase the extraction rate compared to the polymer.
- the polyhydric alcohol or saccharide has an ester or an ester obtained by esterifying at least one of the hydroxyl groups of the polyhydric alcohol or the saccharide.
- the organic compound (C) preferably has an atomic ratio of oxygen to carbon of 0.5 or more.
- the molecular weight of the above-mentioned polyhydric alcohols and saccharide esters is preferably not more than 1,000. The above polyhydric alcohols, saccharides and esters may be used as a mixture.
- the atomic ratio of oxygen to carbon is calculated from the molecular formula of the organic compound. When used as a mixture, the ratio of the total number of moles of oxygen atoms to the total number of moles of carbon atoms contained therein is the atomic ratio.
- polyhydric alcohols include glycerin, pentayl erythritol, dipentyl erythritol, tristyrol pro), ditrimethylol propane, and xylitol and mannitol.
- cyclic sugar alcohols such as sugar alcohol dinositol such as toluene and sorbitol.
- saccharide examples include monosaccharides such as dulkose, fructose, galactose, and mannose, which have a cyclic structure, and sugars such as maltose, sucrose, lactose, and cellobiose. Saccharides in which the cyclic structures are linked by glycosidic bonds.
- the ester those having a structure in which a hydrogen atom of a hydroxyl group is substituted by an acetyl group are preferable.
- the amount of the organic compound (C), which is preferably glyceryl triacetate is the amount of the liquid silica precursor (A).
- the amount of the liquid silica precursor (A) is the amount of the liquid silica precursor (A).
- the weight ratio of (C) is often referred to as the weight ratio of organic compound (C) to silica.
- the amount of the organic compound (C) is less than 0.1 part by weight, a porous silica thin film giving a practically low refractive index may not be obtained. If the amount of the organic compound (C) is more than 10 parts by weight, the thin film may peel off from the substrate during extraction. There is a danger.
- the coating composition of the present invention contains the fluid silica precursor (A), the basic compound (B), and the organic compound (C) as essential components.
- the fluid silica precursor (A) the basic compound (B), and the organic compound (C) as essential components.
- components which are not essential components of the coating composition but are preferably contained will be described.
- the coating composition of the present invention includes a solvent (D) (solvent for coating) for facilitating application to a substrate (facilitating film formation), and Z or a tetraalkyl for suppressing a change in viscosity of the coating composition. It is preferable to further contain an ammonium salt (E).
- D solvent for coating
- E ammonium salt
- the solvent (D) will be described.
- the solvent (D) is a solvent for the mixture of the flowable silicic acid precursor (A), the basic compound (B) and the organic compound (C). Further, since it is necessary to evaporate the solvent (D) after the application, the solvent (D) preferably contains a volatile solvent. It is preferable that the solvent (D) does not significantly dissolve the substrate.
- the weight ratio of the flowable silica precursor (A) to the entire coating composition can be appropriately adjusted.
- the solvent (D) is preferably added so that the amount of the fluid silica precursor (A) is in the range of 0.01 to 10% by weight based on the total weight of the coating composition. More preferably, it is added so as to be in the range of 0.5 to 5% by weight.
- the amount of the flowable silica precursor (A) is less than 0.01% by weight, a required film thickness tends to be not obtained.
- the flowable silica precursor (A) When the amount is more than 10% by weight, the viscosity of the coating composition tends to be too high and the workability of film formation tends to decrease.
- Examples of the solvent (D) include water, monohydric alcohols having 1 to 6 carbon atoms, dihydric alcohols having 1 to 6 carbon atoms, alcohols such as glycerin, formamide, and N-methylform.
- Amides such as N, N-N-Jethylacetamide, N-methylpyrrolidone, tetrahydrofuran, getyl ether, di (n-butyl pill) ether, diisopropyl ether, diglyam 1,4-dioxane, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol dimethyl ether, ethylene glycol Getyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether
- solvents may be used alone or as a mixture. Also, any other solvent or additive may be mixed.
- Preferred examples of the solvent (D) include monovalent alcohols having 1 to 6 carbon atoms or ethylene diol monomethyl ether, Mixtures of alcohols such as ethylene glycol monoethyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether with water or methyl ethyl ketone or methyl isobutyl ketone.
- solvent (D) include monovalent alcohols having 1 to 6 carbon atoms or ethylene diol monomethyl ether, Mixtures of alcohols such as ethylene glycol monoethyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether with water or methyl ethyl ketone or methyl isobutyl ketone.
- a solvent (D) having a high boiling point having a hydroxyl group and a boiling point of 100 ° C. or higher is used as the solvent. It is preferable to contain 5% by weight or more based on the weight of the coating composition.
- the amount of high boiling solvent is more preferably from 5 to 99.99% by weight, more preferably from 5 to 99.95% by weight, especially preferably from 5 to 99. . 7% by weight
- Preferred examples of the high boiling point solvent having a hydroxyl group and a boiling point of 100 ° C. or more include water, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol monomethyl ether, and propylene. Wrengri Coalmono And ethyl ether.
- the tetraalkylammonium salt (E) will be described.
- a porous silica thin film obtained by using the coating composition of the present invention is used as an antireflection film, if the thickness of the porous silica thin film changes, the color tone of the reflected light changes, resulting in spots. there is a possibility. For this reason, it is preferable that the change in the viscosity of the coating composition of the present invention when allowed to stand or when stirred is small.
- tetraalkylammonium salt (E) When a tetraalkylammonium salt (E) is used, it is preferably used together with a solvent (D) that can dissolve the tetraalkylammonium salt (E).
- tetraalkylammonium salt (E) there is no particular limitation on tetraalkylammonium salt (E).
- Preferred examples of the tetraalkylammonium salt (E) include the following formula (5):
- R 9 , R 1 Q , and R 11 R 12 each independently represent an alkyl group having 1 to 10 carbon atoms, each of which is bonded to a nitrogen atom, and X represents a halogen atom.
- the amount of the tetraalkylammonium salt (E) is preferably 1 to 50 parts by weight based on 100 parts by weight of the flowable silicic acid precursor (A). When the amount is less than 1 part by weight, the effect of suppressing the change in viscosity is hardly exhibited. If the amount exceeds 50 parts by weight, the tetraalkylammonium salt (E) may partially remain in the porous silica thin film, and the durability of the thin film may be reduced.
- a radical such as an azo or peroxyside radical is included as a component of the composition of the present invention. It is preferable to add a polymerization initiator or a photoradical polymerization initiator such as acetophenones, benzophenones, ketals, and anthraquinones.
- the basic compound (B) acts as a polymerization initiator. Therefore, in this case, from the viewpoint of storage stability, it is preferable to add the basic compound (B) immediately before coating, and it is preferable to use a coating apparatus capable of coating while mixing two or more kinds of solutions.
- Flowable silica precursor (A), basic compound (B), organic The order of addition of the compound (C) is not particularly limited, but it is possible to first mix the fluid silica precursor (A) and the organic compound (C) and then add the basic compound (B) thereto. I like it.
- the fluid silica precursor (A) and the organic compound (C) are added to the solvent (D), and the solvent (D) and the basic compound ( It is more preferred to add a mixture with B) to form a solution.
- a reaction solution obtained by adding water in the presence of an acid catalyst to carry out a hydrolytic polycondensation reaction may be used as it is, but by a known method.
- Concentrated reaction solution, flowable silica precursor from reaction solution by known method may be used as it is, but by a known method.
- An isolated form of (A) may be used.
- concentrating add the organic compound to the reaction solution containing the flowable silica precursor (A) in advance.
- the compatibilization rate of the organic compound (C) with the fluid silica precursor (A) is low, it is necessary to carry out the hydrolysis before the hydrolysis polycondensation of the alkoxysilane or during the hydrolysis polycondensation of the alkoxysilane. It is preferable to add an organic compound (C). This is because this may improve the compatibility between the flowable silica precursor (A) and the organic compound (C).
- a mixture containing the flowable silica precursor (A), the basic compound (B), and the organic compound (C) is mixed by a known stirring method. It is preferable to carry out stirring and mixing at a temperature of room temperature to 50 using a stirring method.
- the stirring time is not particularly limited, but is preferably 5 minutes to 24 hours, more preferably 5 minutes to 5 hours, and further preferably 5 minutes to 2 hours.
- the porous silicon thin film obtained by using the coating composition of the present invention can be advantageously used as an antireflection film for coating optical components, lenses of glasses, etc., and screens of display devices. it can.
- the porous silica thin film of the present invention comprises the following steps:
- the substrate used in the present invention is not particularly limited, and glass, plastic sheet, or transparent film can be used, but it is preferable to use a transparent sheet film.
- Cellulose acetate films such as triacetyl cellulose, cell opening and cellulose acetate, expanded polyester films such as expanded polyethylene terephthalate and polyethylene naphthalate And sheets, polycarbonate films and sheets, acryl sheets, norbonene films and sheets, polyrelate films and sheets, and polysulfone films.
- Film-based sheets are preferred.
- cellulose triacetate film, cellulose acetate propionate film, polycarbonate film, stretched polyethylene terephthalate film, acryl sheet, polycarbonate sheet Is preferred.
- the shape of the substrate is not particularly limited.
- a circular coating is preferable, and when the coating is performed by any other method, a flat coating is preferable.
- a film-shaped substrate wound in a roll is preferred.
- the application of the composition in the above step (1) is performed by rubbing, spin-coater, knife coater, blade-coater, blade-coater, squeeze-copper, and lino-roller-copper. , Gravia Rorko overnight, Slydoko overnight, Curtainco overnight-Suhu. It can be carried out using a known coating machine such as a laser coater, a die coater, a cap coater and the like. Of these, a method capable of continuous application is preferably used. The above method Of these methods, continuous coating is possible except for rubbing and spin coating.
- the coating temperature is preferably room temperature to 80 ° C, more preferably room temperature to 60 ° C (:, more preferably room temperature to 50 ° C.
- the solvent (D ) May be applied at a temperature lower than room temperature for the purpose of suppressing the evaporation rate of).
- the application may be performed at any time after the addition of the basic compound (B), but is preferably performed within 24 hours after the addition, more preferably within 10 hours, and further preferably 5 hours. Within.
- the coating composition is subjected to a filtration treatment by a known method before coating to remove silica insolubles, impurities, and the like.
- the coating composition is applied onto the substrate at a temperature lower than the thermal deformation temperature of the substrate, and the flowable silica precursor (A) is heated at a temperature lower than the thermal deformation temperature of the substrate. It is desirable to form a silica-Z organic compound composite thin film by curing.
- the thermal deformation temperature of the substrate varies depending on the type of the substrate. ° C, 100 ° C to 140 ° C for polycarbonate film, stretched polyethylene film, and polycarbonate sheet.
- the curing temperature in the above step (2) can be changed depending on the heat resistance of the substrate, but in the case of an optical film, 150 ° C., preferably 70 ° C. to 130 ° C., and more preferably 80 ° C. to 120 ° C. If the temperature is lower than 60 ° C., a porous film having good adhesion to the substrate cannot be obtained, and if the temperature exceeds 150 ° C., the substrate may be deformed.
- the porous silica thin film of the present invention not only has a low refractive index, a high light transmittance, and a high strength, but also has an advantage that it can be obtained in a short curing time and has good productivity.
- the curing time is usually 1 hour or less, preferably 10 minutes or less, and more preferably 2 minutes or less. If it exceeds 1 hour, the efficiency decreases in terms of productivity.
- the extraction in the above step (3) is performed by bringing the cured thin film formed on the substrate into contact with an extraction solvent.
- the contact method may be a method of immersing the entire substrate in an extraction solvent, or a washing method in which the extraction solvent is passed over the surface of the cured thin film.
- the extraction solvent is not particularly limited as long as it is a solvent that can dissolve the organic compound (C), and the above-mentioned coating solvent (D) can be used.
- a polar solvent having at least one polar group selected from the group consisting of an ether group, an ester group, a carbonyl group, a carbonyl group, a carbonate group, an amide group and a hydroxyl group is preferable to use water, a monohydric alcohol having 1 to 6 carbon atoms, or acetone. More preferably, a mixed solvent of ethanol, propanol, isopropanol, water / ethanol, a mixed solvent of water / isopropanol, and a mixed solvent of water / acetone is used.
- an acid may be added to the extraction solvent.
- the acid is not particularly limited, but is preferably a highly volatile one such as hydrochloric acid or acetic acid.
- the extraction temperature in step (3) is not particularly limited as long as the substrate does not deform, but is preferably 100. ° C or lower, more preferably 60 ° C or lower ', and most preferably 40 ° C or lower.
- the organic compound (C) is sufficient even if the extraction time is short. Can be eliminated.
- the extraction time is preferably within 30 minutes, more preferably within 10 minutes, more preferably within 1 minute, most preferably within 20 seconds. Since the extraction is completed quickly, the productivity will decrease after more than 30 minutes.
- the obtained porous silica thin film is dried.
- the drying conditions may be appropriately selected in consideration of the heat resistance of the substrate, as in the above-described curing conditions.
- the drying temperature is usually 60 to 150 ° C, preferably 70 to: L 30 ° C, more preferably 80 to 120 ° C.
- the time required for drying depends on the drying temperature, but is usually within 1 hour, preferably within 10 minutes, more preferably within 2 minutes. If the time exceeds 1 hour, efficiency decreases in terms of productivity.
- the drying method is not particularly limited as long as it is a known method. However, a drying method under normal pressure is preferable because the drying apparatus does not become large. Examples of preferred drying methods include a hot air circulation method and a heat radiation method. In addition, infrared drying and dielectric heating drying may be used.
- the porous silicon thin film obtained as described above may be irradiated with an electron beam or an ultraviolet ray to improve the strength of the thin film.
- the flowable silica precursor (A) has a (meth) acrylate group
- electron beam irradiation or ultraviolet irradiation is performed before, simultaneously with, after Z, or after the curing treatment after coating.
- the oxygen in the system is replaced with an inert gas such as nitrogen.
- the thickness of the porous silica thin film of the present invention is not particularly limited.
- the thickness should be in the range of 50 to 1,000 nm. Is preferred. If the film thickness is less than 50 nm, the antireflection effect may be reduced. On the other hand, if the film thickness exceeds 1, 000 nm, the phase shift of light may be disordered, and the antireflection effect due to interference may be reduced.
- the film thickness is more preferably in the range of 50 to 500 nm, and more preferably in the range of 60 to 20 O nm. More preferred.
- the low-refractive-index porous silica thin film obtained from the coating composition of the present invention can be used, for example, in the field of eyeglasses such as eyeglass lenses, goggles, and contact lenses; car windows, instrument panels, and navigation systems. Automobiles such as windows; Houses such as window glass and construction; Agriculture such as light transmissive films and sheets of houses; Solar cells Photovoltaic cells, lasers and other energy fields; TV cathode ray tubes, notebook computers, electronic notebooks, evening Electronic information devices such as touch panels, LCD TVs, LCD displays, in-vehicle TVs, LCD video, projection TVs, optical fibers, optical disks, etc .; household products such as lighting gloves, fluorescent lamps, mirrors, clocks, etc .; Business fields such as showcases, foreheads, semiconductor lithography, copy machines, etc .; LCD game machines, pachinko machines In the field of entertainment, such as glass and game machines, it is used for surface coating of light-transmitting optical substrates that need to prevent reflection and /
- an optical film and a silicon wafer having a diameter of 3 inches were used as substrates.
- the optical film used was Cosmo Shin A430, 188 micron film thickness, biaxially stretched polyethylene terephthalate film (PET.) Manufactured by Toyobo Co., Ltd. of Japan.
- the solution obtained by dissolving the silica precursor in tetrahydrofuran was subjected to gel permeation chromatography (GPC) to create a calibration curve obtained for standard monodisperse polyethylene glycol, The average molecular weight was determined.
- GPC gel permeation chromatography
- GPC equipment Gel permeation mouth mouth glass manufactured by Shimadzu Corporation, Japan 1 O A series
- the vapor pressure of the basic compound is determined by the boiling point described on page 381 of “4th edition. Experimental Chemistry Lecture 4 Heat and Pressure”, edited by The Chemical Society of Japan (1992, published by Nippon Kuni Maruzen Co., Ltd.). Measured according to the method.
- the basic compound which does not show a boiling point at 101 kPa and 100 ° C has a vapor pressure at 100 ° C of less than 0.1 kPa. In the case of ammonia water, the vapor pressure exceeded 13 kPa because ammonia was volatile.
- the measurement was performed at 25 ° C using a RE550L viscometer manufactured by Toki Sangyo Co., Ltd. of Japan.
- Transmittance and reflectivity at an incident angle of 12 ° are the spectrophotometer MPC manufactured by Shimadzu Corporation of Japan. — 2 2 0 0 was used.
- Refractive index value for light of 1'.95 eV
- porosity were measured by forming a thin film on a silicon wafer using a spectroscopic ellipsometer manufactured by JOBBINVONN, France.
- the haze is measured by a turbidity meter manufactured by Nippon Denshoku Industries Co., Ltd. This was performed using NDH 2000. '
- the pencil hardness was measured using a sample applied on a PET film under a 1 kg load described in JIS K540.
- Example 1 All drying in the examples and comparative examples was performed using a hot air circulation dryer (DKN-401, manufactured by Yamato Scientific Co., Ltd. of Japan).
- DKN-401 manufactured by Yamato Scientific Co., Ltd. of Japan.
- Methyl triethoxysilane 14.8 g (83.1 mmo 1) The total amount of silica obtained by complete hydrolysis polycondensation is 5. 5 8) and 4.3 g of tetraethoxysilane (20.7 mmo1, the amount of silica obtained by completely hydrolyzing polycondensation is 1.24 g).
- a mixed solution of 7.0 g of water and 0.059 g of phosphoric acid (acid catalyst) is slowly added, and hydrolysis polycondensation is carried out at 50 ° C for 5 hours. A reaction mixture containing the precursor (A) was obtained.
- this composition was applied on a PET optical film and a silicon wafer by a spin coat method to form a thin film.
- the obtained thin film is cured by drying at 100: 1 minute, thereby obtaining a cured thin film in which the flowable silica precursor (A) is converted into silica.
- the obtained thin film is cured by drying at 100: 1 minute, thereby obtaining a cured thin film in which the flowable silica precursor (A) is converted into silica.
- the back surface was similarly coated and dried.
- polyethylene glycol dimethyl ether organic compound (C)
- C organic compound
- the optical film and the silicon wafer covered with the porous silica thin film were dried at 100 ° C for 1 minute.
- Absolute reflectance measurement at an incident angle of 12 ° of the optical film shows a minimum reflectance at a wavelength of 540 nm, and a porous silica thin film What was 8.2% when not coated with a film was reduced to 0.1%, and the transmittance at the wavelength (540 nm) that gave the minimum reflectance was that of a porous silicon thin film. The value was 91.5% when not coated, but increased to 99.0% when coated with a porous silica thin film. When the silicon wafer was similarly covered with a porous silicon thin film and the refractive index was measured, the refractive index was as good as 1.210 (porosity: 38.5%). Pencil hardness indicated HB. The results are shown in Table 1, Figure 1 (reflectance) and Figure 2 (transmittance). Example 2
- Example 3 shows the results.
- Example 4 It exhibited a minimum reflectance of 0.2% at a wavelength of 520 nm, and the transmittance at that wavelength was 99.0%. The porosity was as good as 34.5% and the refractive index was as good as 1.227. Table 1 shows the results. Example 4
- Example 5 A minimum reflectance of 0.3% was exhibited at a wavelength of 550 ⁇ , and a transmittance at that wavelength was 99.1%. The porosity was 36.1%, and the refractive index was as good as 1.218. Table 1 shows the results.
- Example 5 A minimum reflectance of 0.3% was exhibited at a wavelength of 550 ⁇ , and a transmittance at that wavelength was 99.1%. The porosity was 36.1%, and the refractive index was as good as 1.218. Table 1 shows the results. Example 5
- Example 6 It exhibited a minimum reflectance of 0.3% at a wavelength of 560 nm, and the transmittance at that wavelength was 99.0%. The porosity is 43.5% The refractive index was as good as 1.19.3. The pencil hardness indicated HB. Table 2 shows the results. Example 6
- Example 7 The minimum reflectance was 0.1% at a wavelength of 540 nm, and the transmittance at that wavelength was 99.0%. The porosity was 31.6%, and the refractive index was as good as 1.235. Table 2 shows the results.
- Example 7 The minimum reflectance was 0.1% at a wavelength of 540 nm, and the transmittance at that wavelength was 99.0%. The porosity was 31.6%, and the refractive index was as good as 1.235. Table 2 shows the results. Example 7
- Example except that a solution consisting of 4.0 g of methylethyl ketone and 1.0 g of propylene glycol monomethyl ether was used instead of a solution consisting of 2.5 g of water and 25 g of propylene glycol monomethyl ether. The same operation as in 5 was performed.
- Example 8 The same operation as in Example 5 was performed, except that the silicic acid precursor Z aliphatic polyester composition stored at room temperature for 15 hours was used.
- Example 5 The same operation as in Example 5 was performed, except that the amount of the aqueous solution of 20 wt% tetra (n-propyl) ammonium hydroxide in the mouth was changed to 0.015 g.
- Comparative Example 1 The same operation as in Comparative Example 1 was performed except that the coating composition obtained by adding aqueous ammonia was stirred at 40 ° C. for 2 hours, and then coated on an optical PET film.
- Example 2 The same operation as in Example 1 was performed, except that the 0.1 N-aqueous sodium hydroxide solution 0.158 was replaced with 0.1 N-hydroxide aqueous sodium hydroxide solution 0.015 g. .
- Example 2 The same operation as in Example 1 was performed except that the amount of the 1N-sodium hydroxide aqueous solution was changed to 1.5 g.
- a mixed solution containing a flowable silica precursor (the flowable silica precursor in this mixed solution was completely removed).
- the weight ratio of silica obtained by polycondensation to the mixed solution was 0.08.
- the mixed solution is referred to as a high-concentration fluid silica precursor mixed solution).
- a coating composition was prepared and spin-coated in the same manner as in Example 1.
- Comparative Example 9 ′ According to the Japanese Patent Application Laid-Open No. 6-299091, 50 g of tetraethylethoxysilane, 14 g of anhydrous ethanol, and 14.6 g of 25% aqueous ammonia were sealed. It was placed in a glass container and left at room temperature for 4 days to obtain a 3% by weight colloidal silicic acid dispersion in ethanol. This was filtered through a 0.2 m Teflon membrane filter.
- Example 2 of Japanese Patent Application Laid-Open No. 3-1990943. 178.33 g of methyltriethoxysilane was weighed, and 13.82 g of ethanol and 22.24 g of 1-butanol were added and mixed to obtain a homogeneous solution. To this solution, 10.8 g of water and 0.49 g of phosphoric acid were added, and the mixture was further stirred for 60 minutes. To this solution was added 13.82 g of ethanol, 22.24 g of 1-butanol and 3.3 g of poly (ethylene glycol) (weight average molecular weight 2,000). The mixture was further stirred for 10 minutes to obtain a coating composition.
- ethylene glycol weight average molecular weight 2,000
- this composition was applied on a PET film by a spin coat method at 1000 rpm for 30 seconds, and dried at 120 ° C. for 2 minutes.
- the resulting film with a coating film was immersed in a solvent for extraction with water Z ethanol (50 Z 50 parts by weight) for 30 seconds to extract glyceryl triacetate. Drying was performed again at 120 ° (:, 30 seconds) to obtain a PET film covered with a porous silica thin film.
- the surface not covered with the porous silica thin film is roughened with sandpaper, and black ink is applied to reflect the light from the surface not covered with the porous silica thin film.
- the angle of incidence on the surface coated with the porous silica thin film was 12.
- the minimum reflectance was 0.15% at 610 nm.
- the haze was 0.68 and the pencil hardness was H. Table 5 shows the results.
- Example 1 Polyvinyl methyl ether manufactured by Tokyo Chemical Industry Co., Ltd. was used in place of polyethylene glycol dimethyl ether, and water Z acetate solvent (20 Z 80% by weight) was used as an extraction solvent. The same operation as in Example 7 was performed except that the absolute reflectance measurement method described in 0 was performed.
- the obtained optical film exhibited a minimum reflectance of 0% at 5755 nm.
- the haze was 0.98 and the pencil hardness was HB. Table 5 shows the results.
- Example 14 instead of glyceryl triacetate, polyethylene glycol dimethyl ether was used in such an amount that the weight ratio of silica to silica became 1. Except for this, the same operation as in Example 10 was performed. By setting the solvent extraction time to 120 seconds, the minimum reflectance was 0.8% at 630 nm, the haze was 0.95, and the pencil hardness was H. Table 6 shows the results. Show. Example 14
- Example 13 The same operation as in Example 13 was performed except that the solvent extraction time was set to 600 seconds.
- the sample exhibited a minimum reflectance of 0.3% at 63 nm, a haze of 0.94 and a pencil hardness of H. Table 6 shows the results. Comparative Example 1 1
- Example 10 The same operation as in Example 10 was carried out except that 1,2-dimethoxybenzene (boiling point: 85 ° C) was used in an amount to give a weight ratio of silica to 3, instead of glyceryl triacetate.
- 1,2-dimethoxybenzene (boiling point: 85 ° C) was used in an amount to give a weight ratio of silica to 3, instead of glyceryl triacetate.
- Methyl triethoxysilane 222 g (1.245 moi, the total amount of silica obtained by complete hydrolysis polycondensation is 834 g) and tetraethoxysilane 72 g (0.334 6 mol, The total amount of silica obtained by complete hydrolysis and polycondensation is 20.8 g), mixed with 92 g of water and ion-exchange resin Diaion RCP 1660 manufactured by Mitsubishi Chemical Corporation of Japan. (1.5 meq / mL-R) Add a mixed solution with 19.1 mL slowly and carry out hydrolysis polycondensation at 50 ° C for 5 hours to obtain a fluid silica precursor. A reaction solution containing (A) was obtained.
- the reaction mixture is treated as an organic compound (C) with polyethylene glycol dimethyl ether (weight-average molecular weight: 600, practically no boiling point). g, and propylene glycol monomethyl ether was added to obtain 1042 g of a mixed solution containing the fluid silica precursor (A) (the fluid silica in this mixed solution).
- the weight ratio of silica obtained by complete polycondensation of the precursor (A) to this mixed solution was 0.1. Liquid).
- the weight average molecular weight of the flowable silicic acid precursor (A) in this high-concentration flowable silica precursor mixture was 7,600.
- a water / ethanol mixed solvent solvent for extraction
- the surface that is not covered with the porous silica thin film is roughened with a sandpaper, painted with black ink, and the surface not covered with the porous silica thin film is removed.
- the angle of incidence on the surface coated with the porous silica thin film 12 12.
- the minimum reflectance at 0.10 nm was 0.15%.
- the haze was 092 and the pencil hardness was HB. Table 7 shows the results.
- Example 17 20% by weight of tetra (n-propyl) ammonium hydroxide mouth aqueous solution of xide instead of 0.15 g, 2.25% by weight of tetra (n-propyl) ammonium hydrofluoride aqueous solution 2 2
- tetra (n-propyl) ammonium hydrofluoride aqueous solution 2 2 The same operation as in Example 15 was performed except that 0.5 mg was used, and a minimum reflectance of 0.5% was shown at a wavelength of 6 10 nm. The haze was 0.88 and the pencil hardness was H. The results are shown in Table 7. You. Example 17
- Example 18 20% by weight aqueous solution of tetra (n-propyl) ammonium hydroxide at the mouth, instead of 0.15 g, 2.25% by weight aqueous solution of tetra (n-propyl) ammonium hydroxide
- a spin coating was also performed on a silicon wafer to measure the refractive index.
- the minimum reflectance was 0.15% at a wave length of 61 nm.
- the haze was 0.81%
- the pencil hardness was H
- the refractive index was 1.21. Table 7 shows the results.
- Example 19 The same operation as in Example 17 was performed except that the amount of the aqueous solution of 22.5% by weight of tetra (n-propyl) ammonium hydroxide was changed to 0.105 g. It exhibited a minimum reflectance of 0.15% at a wavelength of 590 nm. The haze was 0.95%, the pencil hardness was H and the refractive index was 1.21. Table 7 shows the results.
- Example 19 shows that the amount of the aqueous solution of 22.5% by weight of tetra (n-propyl) ammonium hydroxide was changed to 0.105 g. It exhibited a minimum reflectance of 0.15% at a wavelength of 590 nm. The haze was 0.95%, the pencil hardness was H and the refractive index was 1.21. Table 7 shows the results. Example 19
- Example 20 20% by weight of tetra (n-propyl) ammonium hydroxide mouth solution of xide solution Instead of 0.15 g, 22.5% by weight of tetra (n-propyl) ammonium hydroxide solution 0
- spin coating was performed on a silicon wafer using 18 g, and the refractive index was measured.
- the refractive index was 1.27. Table 7 shows the results.
- Example 20
- Example 2 instead of 0.15 g of a 20% by weight tetra (n-propyl) ammonium octamide solution, 0.15 g of a 22.5% by weight tetra (n-propyl) ammonium hydroxide aqueous solution 0, The same operation as in Example 19 was performed except that 27 g of the solution was coated on a silicon wafer and the refractive index was measured by ellipsometry overnight. The refractive index was 1.31. Table 8 shows the results.
- Example 2 1 Example 2 1
- Example 22 Using the high-concentration flowable silica precursor mixture obtained in Example 1, instead of 0.15 g of a 20% by weight aqueous solution of tetra (n-propyl) ammonium hydroxide, 2% The same operation as in Example 15 was performed except that 47 mg of 2.5 wt% tetra (n-propyl) ammonium 'hydroxide aqueous solution was used. Spin coating was also performed on the silicon wafer, and the refractive index was measured. Regarding the reflectance, the minimum reflectance was 0.10% at a wavelength of 600 nm. The haze was 0.83%, the pencil hardness was H, and the refractive index was 1.21. Table 8 shows the results.
- Example 22 Using the high-concentration flowable silica precursor mixture obtained in Example 1, instead of 0.15 g of a 20% by weight aqueous solution of tetra (n-propyl) ammonium hydroxide, 2% The same operation as in Example 15 was performed except that 47 mg of
- Example 18 The same operation as in Example 18 was performed, except that the high-concentration flowable silica precursor mixture obtained in Example 1 was used.
- Example 2 The high-concentration fluid silica precursor mixture obtained in Example 1 was used, and instead of 0.15 g of a 20% by weight aqueous solution of tetra (n-propyl) ammonium hydroxide, 22.5 g was used. The same operation as in Example 16 was performed except that 0.23 g of a weight% tetra (n-propyl) ammonium octahydroxide aqueous solution was used. .
- Example 2 The high-concentration flowable silica precursor mixture obtained in Example 1 was used, and instead of 0.15 g of a 20% by weight aqueous solution of tetra (n-propyl) ammonium hydroxide, 22.5 was used. % By weight Tetra (n-propyl) aqueous ammonium hydroxide The same operation as in Example 23 was performed except that 0.27 g of the liquid was used.
- Example 2 5 It exhibited a minimum reflectance of 0.35% at a wavelength of 58 Onm. The haze was 0.89%, the pencil hardness was HB, and the refractive index was 1.32. Table 8 shows the results.
- Example 2 5 It exhibited a minimum reflectance of 0.35% at a wavelength of 58 Onm. The haze was 0.89%, the pencil hardness was HB, and the refractive index was 1.32. Table 8 shows the results. Example 2 5
- 1,2—bis (triethoxysilyl) ane 7.4 g (001 2 mo 1) the amount of silica obtained by complete hydrolysis and polycondensation is 2.76 g) 7.4 g of methyltriethoxysilane (0.042 m01, the total amount of silica obtained by complete hydrolytic polycondensation is 2.79 g), and 48 g of tetratraethoxysilane (0.04 m0). 0.23 mo 1, a total amount of silica obtained by complete hydrolysis and polycondensation of 1.38 g) was added to a mixed solution of 6.2 g (0.34 mol) of water and phosphoric acid.
- a water-Z ethanol mixed solvent solvent for oil removal
- water-Z ethanol weight ratio 50 Z50
- the PET film obtained showed a minimum reflectance at 540 nm, and the reflectance of the PET film not covered with the porous silica thin film was 8.2%, but was reduced to 0.1%. It was.
- Example 26 Using a coated film cut into a strip shape, the operation of winding the film to a diameter of 2 cm was repeated 10 times, and then an optical microscope (BH-2, manufactured by Olympus Optical Industry Co., Ltd., Japan) (magnification: 1 To determine the number of traces of destruction on the PET thin film Thereby, the adhesiveness to the substrate was evaluated. As for the peeling mark due to the winding operation, a small cross-shaped mark was observed in the sample of Example 1, but was not observed in the sample of this example.
- Example 26 BH-2, manufactured by Olympus Optical Industry Co., Ltd., Japan
- Example 26 The same operation as in Example 26 was performed, except that tetramethyl (n-propyl) ammonium bromide was not added.
- the viscosity of the coating composition was observed to be 0.886 mPa ⁇ s 1 hour after preparation and 0.94 mPa ⁇ s 20 hours later. Comparative Example 1 3
- the high-concentration fluid silica precursor mixture obtained in Example 1 was concentrated, and 22.5% by weight of an aqueous solution of 22.5% by weight of tetra (n-propyl) ammonium hydroxide and ethanol were added thereto. Then, an ethanol coating solution containing 0.9% by weight of water, 0.2% by weight of tetra (n-propyl) ammonium hydroxide and 2.3% by weight of propylene glycol monomethyl ether was prepared.
- the molar ratio of the basic compound to Si in the ethanol coating solution was 0.065.
- the weight ratio of silica obtained by completely polycondensing the flowable silica precursor in the ethanol coating solution to the ethanol coating solution was 0.01.
- Example 1 The content of the high-boiling solvent having a hydroxyl group and having a boiling point of 100 ° C. or more in this ethanol coating liquid was 3.1% by weight. When this coating solution was applied on a silicon wafer by a spin coat method, a film having a rough surface was obtained. ' Example 1 Example 2 Example 3 Example 4 Flowable silica precursor (A)
- MTES methyltriethoxysilane
- TE ⁇ S triethoxysilane
- PE I polyethyleneimine
- TETA tri'ethylenetetramamine
- TEPA tetraethylenepentamine
- PEGDME polyethylene glycol dimethyl ether
- PGME propylene glycol Monomethyl ether Table 2
- MTES methyltriethoxysilane
- TEOS triethoxysilane
- TPAH tetrapropylammonium hydroxide
- PE I polyethyleneimine
- PEGDME polyethylene glycol dimethyl ether
- PGME propylene glycol monomethyl ether
- MEK methylethyl Ketone Table 3
- MTES Methyltriethoxysilane
- TEOS Triethoxysilane
- PEGDME Polyethylene glycol dimethyl ether
- PGME Propylene glycol monomethyl ether
- MTES Methyltriethoxysilane
- TEOS Triethoxysilane
- DMDES Dimethyldiethoxysilane
- THMAM Trishydroxymethylamino methane
- PEGDME Polyethylene glycol dimethyl ether
- p GME Propylene dalycol monomethyl ether
- MTES methyltriethoxysilane
- ⁇ £ 03 tetraethoxysilane
- ⁇ ? 1 ⁇ tetrapropylammonium hydroxide
- 0 glyceryl triacetate
- SOA sucrose octaacetate
- PVME polypinyl methyl ether
- PGME propylene glycol monomethyl ether
- MI BK methyl isobutyl ketone
- MTES methyltriethoxysilane
- PEGDME polyethylene glycol dimethyl ether
- DME 1, 2-dimethyloxetane
- PGME propylene glycol monomethyl ether
- MI BK methyl isobutyl ketone
- MTES Methyltriethoxysilane
- TEOS Triethoxysilane
- D? ⁇ [ Tetrapropylammonium hydroxide
- PEGDME polyethylene glycol dimethyl ether
- PGME propylene d'alcol monomethyl ether
- MTES Methyltriethoxysilane
- TE0S Triethoxysilane
- 811 Tetrapropylammonium hydroxide
- PEGDME Polyethylene glycol dimethyl ether
- PGME Propylene dalycol monomethyl ether
- MI BK Methyl isobutyl ketone Industrial applicability
- the coating composition of the present invention it is possible to form a porous silica thin film having a low refractive index, high light transmittance and high strength on a substrate.
- the above porous silica thin film can be advantageously used as an antireflection film for covering lenses such as optical components and glasses, and screens of display devices.
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Description
Claims
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JP2003552874A JP4233456B2 (ja) | 2001-12-14 | 2002-12-13 | 低屈折率薄膜形成用塗布組成物 |
US10/496,870 US7081272B2 (en) | 2001-12-14 | 2002-12-13 | Coating composition for forming low-refractive index thin layers |
KR10-2004-7009242A KR20040070225A (ko) | 2001-12-14 | 2002-12-13 | 저굴절률 박막 형성용 코팅 조성물 |
AU2002354487A AU2002354487A1 (en) | 2001-12-14 | 2002-12-13 | Coating composition for forming low-refractive index thin layers |
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Also Published As
Publication number | Publication date |
---|---|
TW200300786A (en) | 2003-06-16 |
AU2002354487A1 (en) | 2003-06-30 |
KR20040070225A (ko) | 2004-08-06 |
US7081272B2 (en) | 2006-07-25 |
JP4233456B2 (ja) | 2009-03-04 |
TWI251615B (en) | 2006-03-21 |
CN1604943A (zh) | 2005-04-06 |
US20050031791A1 (en) | 2005-02-10 |
JPWO2003052003A1 (ja) | 2005-04-28 |
CN1288214C (zh) | 2006-12-06 |
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