WO1998007783A1 - Caoutchouc de butadiene et compositions a base de resine vinylique aromatique resistantes aux chocs - Google Patents
Caoutchouc de butadiene et compositions a base de resine vinylique aromatique resistantes aux chocs Download PDFInfo
- Publication number
- WO1998007783A1 WO1998007783A1 PCT/JP1997/002885 JP9702885W WO9807783A1 WO 1998007783 A1 WO1998007783 A1 WO 1998007783A1 JP 9702885 W JP9702885 W JP 9702885W WO 9807783 A1 WO9807783 A1 WO 9807783A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- molecular weight
- weight
- polybutadiene rubber
- aromatic vinyl
- range
- Prior art date
Links
- 229920002857 polybutadiene Polymers 0.000 title claims abstract description 99
- 229920002554 vinyl polymer Polymers 0.000 title claims abstract description 73
- 239000011342 resin composition Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000005227 gel permeation chromatography Methods 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000000178 monomer Substances 0.000 claims description 54
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 39
- 229920001971 elastomer Polymers 0.000 claims description 37
- 239000005060 rubber Substances 0.000 claims description 37
- 238000004519 manufacturing process Methods 0.000 claims description 32
- 229920005989 resin Polymers 0.000 claims description 30
- 239000011347 resin Substances 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 17
- 239000005062 Polybutadiene Substances 0.000 claims description 13
- 229920000642 polymer Polymers 0.000 claims description 13
- 238000007865 diluting Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000012662 bulk polymerization Methods 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000003607 modifier Substances 0.000 claims description 6
- 238000010526 radical polymerization reaction Methods 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000010558 suspension polymerization method Methods 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 238000004587 chromatography analysis Methods 0.000 claims 2
- 239000004480 active ingredient Substances 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 description 40
- 239000000243 solution Substances 0.000 description 20
- -1 Polypropylene Polymers 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 17
- 239000003063 flame retardant Substances 0.000 description 17
- 229920005990 polystyrene resin Polymers 0.000 description 15
- 239000000654 additive Substances 0.000 description 14
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 238000005259 measurement Methods 0.000 description 11
- 230000000704 physical effect Effects 0.000 description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
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- 229920003193 cis-1,4-polybutadiene polymer Polymers 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 239000002685 polymerization catalyst Substances 0.000 description 7
- 239000011541 reaction mixture Substances 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000010790 dilution Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 5
- QNRMTGGDHLBXQZ-UHFFFAOYSA-N buta-1,2-diene Chemical compound CC=C=C QNRMTGGDHLBXQZ-UHFFFAOYSA-N 0.000 description 5
- 150000003623 transition metal compounds Chemical class 0.000 description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 4
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 4
- 239000004609 Impact Modifier Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007983 Tris buffer Substances 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 4
- 230000002902 bimodal effect Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 125000005843 halogen group Chemical group 0.000 description 4
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 230000000379 polymerizing effect Effects 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 description 4
- CMQUQOHNANGDOR-UHFFFAOYSA-N 2,3-dibromo-4-(2,4-dibromo-5-hydroxyphenyl)phenol Chemical compound BrC1=C(Br)C(O)=CC=C1C1=CC(O)=C(Br)C=C1Br CMQUQOHNANGDOR-UHFFFAOYSA-N 0.000 description 3
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-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
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 125000001309 chloro group Chemical group Cl* 0.000 description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 150000001451 organic peroxides Chemical class 0.000 description 3
- 229920001083 polybutene Polymers 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 241000209149 Zea Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- LJCFOYOSGPHIOO-UHFFFAOYSA-N antimony pentoxide Chemical compound O=[Sb](=O)O[Sb](=O)=O LJCFOYOSGPHIOO-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
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- IAQRGUVFOMOMEM-UHFFFAOYSA-N but-2-ene Chemical compound CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
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- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
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- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
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- BQJCRHHNABKAKU-KBQPJGBKSA-N morphine Chemical compound O([C@H]1[C@H](C=C[C@H]23)O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4O BQJCRHHNABKAKU-KBQPJGBKSA-N 0.000 description 2
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- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
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- BSSNZUFKXJJCBG-OWOJBTEDSA-N (e)-but-2-enediamide Chemical compound NC(=O)\C=C\C(N)=O BSSNZUFKXJJCBG-OWOJBTEDSA-N 0.000 description 1
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- YMIUHIAWWDYGGU-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[2,3,5,6-tetrabromo-4-(2,3,4,5,6-pentabromophenoxy)phenoxy]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC(C(=C1Br)Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br YMIUHIAWWDYGGU-UHFFFAOYSA-N 0.000 description 1
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- CWZVMVIHYSYLSI-UHFFFAOYSA-N 1,3-dibromo-5-[3,5-dibromo-4-(2,3-dibromopropoxy)phenyl]sulfonyl-2-(2,3-dibromopropoxy)benzene Chemical compound C1=C(Br)C(OCC(Br)CBr)=C(Br)C=C1S(=O)(=O)C1=CC(Br)=C(OCC(Br)CBr)C(Br)=C1 CWZVMVIHYSYLSI-UHFFFAOYSA-N 0.000 description 1
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- 235000021355 Stearic acid Nutrition 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 235000018936 Vitellaria paradoxa Nutrition 0.000 description 1
- MCVYICXWJRCEID-UHFFFAOYSA-N [Al+3].I Chemical class [Al+3].I MCVYICXWJRCEID-UHFFFAOYSA-N 0.000 description 1
- YVYNLIHIATTZSH-UHFFFAOYSA-N [Na+].Cl[Cl-]Cl Chemical compound [Na+].Cl[Cl-]Cl YVYNLIHIATTZSH-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 150000008378 aryl ethers Chemical class 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000012216 bentonite Nutrition 0.000 description 1
- GCTPMLUUWLLESL-UHFFFAOYSA-N benzyl prop-2-enoate Chemical compound C=CC(=O)OCC1=CC=CC=C1 GCTPMLUUWLLESL-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 125000000319 biphenyl-4-yl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C1=C([H])C([H])=C([*])C([H])=C1[H] 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000004799 bromophenyl group Chemical group 0.000 description 1
- MPMBRWOOISTHJV-UHFFFAOYSA-N but-1-enylbenzene Chemical compound CCC=CC1=CC=CC=C1 MPMBRWOOISTHJV-UHFFFAOYSA-N 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 150000001669 calcium Chemical class 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
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- 150000001768 cations Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- IZMHKHHRLNWLMK-UHFFFAOYSA-M chloridoaluminium Chemical compound Cl[Al] IZMHKHHRLNWLMK-UHFFFAOYSA-M 0.000 description 1
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- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- IJRCPFFFTCYQMF-UHFFFAOYSA-N cobalt;octanoic acid Chemical compound [Co].CCCCCCCC(O)=O IJRCPFFFTCYQMF-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- WJTCGQSWYFHTAC-UHFFFAOYSA-N cyclooctane Chemical compound C1CCCCCCC1 WJTCGQSWYFHTAC-UHFFFAOYSA-N 0.000 description 1
- 239000004914 cyclooctane Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- ZFTFAPZRGNKQPU-UHFFFAOYSA-N dicarbonic acid Chemical compound OC(=O)OC(O)=O ZFTFAPZRGNKQPU-UHFFFAOYSA-N 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- XNMQEEKYCVKGBD-UHFFFAOYSA-N dimethylacetylene Natural products CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
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- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- MGKATAIPSLSINK-UHFFFAOYSA-N ethene;4,5,6,7-tetrabromoisoindole-1,3-dione Chemical compound C=C.BrC1=C(Br)C(Br)=C2C(=O)NC(=O)C2=C1Br.BrC1=C(Br)C(Br)=C2C(=O)NC(=O)C2=C1Br MGKATAIPSLSINK-UHFFFAOYSA-N 0.000 description 1
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- 238000001125 extrusion Methods 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- RMBPEFMHABBEKP-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2C3=C[CH]C=CC3=CC2=C1 RMBPEFMHABBEKP-UHFFFAOYSA-N 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 1
- CAYGQBVSOZLICD-UHFFFAOYSA-N hexabromobenzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1Br CAYGQBVSOZLICD-UHFFFAOYSA-N 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 125000000654 isopropylidene group Chemical group C(C)(C)=* 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229960005181 morphine Drugs 0.000 description 1
- UIEKYBOPAVTZKW-UHFFFAOYSA-L naphthalene-2-carboxylate;nickel(2+) Chemical compound [Ni+2].C1=CC=CC2=CC(C(=O)[O-])=CC=C21.C1=CC=CC2=CC(C(=O)[O-])=CC=C21 UIEKYBOPAVTZKW-UHFFFAOYSA-L 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N o-biphenylenemethane Natural products C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 229910000489 osmium tetroxide Inorganic materials 0.000 description 1
- 239000012285 osmium tetroxide Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229940038597 peroxide anti-acne preparations for topical use Drugs 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000037048 polymerization activity Effects 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- FZYCEURIEDTWNS-UHFFFAOYSA-N prop-1-en-2-ylbenzene Chemical compound CC(=C)C1=CC=CC=C1.CC(=C)C1=CC=CC=C1 FZYCEURIEDTWNS-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 150000002909 rare earth metal compounds Chemical class 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000010092 rubber production Methods 0.000 description 1
- 235000020083 shōchū Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 125000004079 stearyl 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])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- NSBGJRFJIJFMGW-UHFFFAOYSA-N trisodium;stiborate Chemical compound [Na+].[Na+].[Na+].[O-][Sb]([O-])([O-])=O NSBGJRFJIJFMGW-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F279/00—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00
- C08F279/02—Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group C08F36/00 on to polymers of conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
Definitions
- the present invention relates to a novel polybutene rubber, an impact-resistant aromatic vinyl resin composition containing the polybutadiene rubber, and a method for producing the resin composition.
- impact-resistant polystyrene resin is obtained by bulk polymerization, solution polymerization, or bulk suspension polymerization of a styrene monomer in the presence of various unvulcanized rubbers. It has a structure in which rubber particles are dispersed in the matrix of a polystyrene resin, which significantly improves the impact resistance of hard and brittle polystyrene resins. I have. Impact-resistant polystyrene resins have been used in a wide range of applications because they are inexpensive, have excellent processability and various physical properties.
- Polybutadiene rubber and styrene-butadiene copolymer rubber are generally used as unvulcanized rubbers used in shochu impact polystyrene resins.
- various types of polybutadiene rubber are used. More specifically, for example, so-called low cis-polybutadiene rubber obtained by an anion polymerization method using an organic lithium alone or a catalyst containing the same as a main component, or cobalt, High-cis butadiene rubber obtained using a coordination anion catalyst containing a transition metal compound such as nickel and titanium as a main component is used.
- impact-resistant polystyrene resins have been used in various applications due to their good physical properties and workability.
- the required performance for lene resins is more advanced than ever.
- physical properties for example, it is required to improve the balance between impact resistance and rigidity (bending elastic modulus), impact resistance at low temperatures, and appearance such as gloss.
- the impact-resistant polystyrene resin obtained by polymerizing a styrene monomer in the presence of unvulcanized rubber is further diluted with a polystyrene resin or the like. Even if various additives such as flame retardants are blended or used, it is required that the physical properties remain unchanged or small.
- Japanese Patent Application Laid-Open No. 4-14689 discloses a method using a special catalyst containing a rare earth metal compound as a main component.
- a method of producing a polybutadiene rubber having an extremely small amount of 2-vinyl bond and a narrow molecular weight distribution has been proposed. According to this method, an impact-resistant polystyrene resin excellent in heat deterioration resistance and weather resistance can be obtained, but the effect of improving the impact resistance at low temperatures is not yet sufficient, and the rigidity is poor. The effect of improving impact resistance is not sufficient.
- Japanese Patent Publication No. 7-57989 discloses that a polybutadiene rubber having a high intrinsic viscosity and a polybutadiene rubber having a slightly lower intrinsic viscosity are blended with an impact modifier.
- An object of the present invention is to achieve a good balance between impact resistance and rigidity (flexural modulus), good impact resistance at low temperatures, and a decrease in physical properties due to dilution with an aromatic vinyl resin or blending of various additives.
- An object of the present invention is to provide an impact-resistant aromatic vinyl-based resin composition in which the content is suppressed, and a novel polybutadiene rubber capable of providing the resin composition.
- the present inventors have conducted intensive studies to overcome the problems of the prior art, and as a result, as a rubber component of the impact-resistant polystyrene resin,
- the molecular weight distribution curve measured by gel permeation chromatography has two peaks caused by a high molecular weight component and a low molecular weight component
- the peak top molecular weight of the high molecular weight component and the peak top molecular weight of the low molecular weight component are 100,000 to 1,500,000, respectively.
- Cis-1, 4 structure content is 80% by weight or more
- a gel permeation chromatograph is provided.
- the molecular weight distribution curve measured by GPC has two peaks attributable to the high molecular weight component and the low molecular weight component, and the high molecular weight component has a peak top molecular weight and the low molecular weight component has a peak top.
- the molecular weights are within the ranges of 100, 000 to 1, 500, 0000 and 100, 000 to 500, 000, respectively, and the weight average molecular weight (Mw) and number
- the ratio (MwZMn) to the average molecular weight (Mn) is within the range of 4.5 to 14.5.
- Polybutadiene rubber having a 1,4 structure content of 80% by weight or more is obtained. Provided.
- an impact-resistant aromatic vinyl resin composition having a structure in which polybutadiene rubber is dispersed in a matrix of the aromatic vinyl resin
- the polybutadiene rubber is the polybutene diene rubber
- the aromatic vinyl resin is selected from the group consisting of a polymer of an aromatic vinyl monomer and a copolymer of an aromatic vinyl monomer and a monomer copolymerizable therewith; Is also a kind,
- a polybutadiene rubber having specific physical properties, structure, and composition is used as a toughening agent for the impact-resistant aromatic vinyl resin composition. That is, the polybutadiene rubber used in the present invention is a rubber defined below.
- the molecular weight distribution curve measured by GPC has two peaks attributable to a high molecular weight component and a low molecular weight component, and has a so-called bimodal molecular weight distribution curve.
- the peak molecular weight of the high molecular weight component and the peak molecular weight of the low molecular weight component are 100,000 to 1,500,000 and 100,000 respectively. Within the range of ⁇ 50, 000.
- (4) cis-1,4 structure content is 80% by weight or more.
- the polybutadiene rubber used in the present invention preferably has the following physical properties, structure and composition.
- the intrinsic viscosity [] measured at 30 is in the range of 1.0 to 6.0.
- the content ratio of each component is 30 to 98% by weight for high molecular weight components and 2 to 70% by weight for low molecular weight components.
- the polybutadiene rubber used in the present invention has a bimodal molecular weight distribution curve measured by GPC.
- the peak top molecular weight of the high molecular weight component is within the range of 100, 000-1, 50,000, 0000, and the Peak-top molecular weight force Must be in the range of 100,000 to 500,000 is necessary.
- the presence of the low molecular weight component makes it possible to obtain an impact-resistant resin composition having excellent low-temperature impact resistance and markedly improved rigidity.
- polybutadiene rubber whose molecular weight distribution curve measured by GPC does not show bimodal properties is used, only an impact-resistant resin composition having insufficient low-temperature impact resistance and rigidity can be obtained. Can not.
- the peak top molecular weight of the high molecular weight component of the polybutadiene rubber is 100,000 to 1,500,000, preferably 200,000. It is in the range of 0 to 1, 000, 0000, more preferably 300, 0000 to 800, 0000.
- the peak top molecular weight of the low molecular weight component of the polybutadiene rubber is 10, 0 0 0-5 0, 0 0 0, preferably 13, 0 0 0 to 4 0, 0 0 0, and more.
- the peak molecular weight of the low molecular weight component is excessively large or excessively small, the effect of improving the impact resistance and rigidity is not sufficient in any case, and the effect of improving the impact resistance at low temperatures is also low. It becomes smaller.
- the molecular weight distribution (MwZMn) of the polybutadiene rubber used in the present invention is from 4.5 to 14.5, preferably from 5.0 to 14.0, more preferably from 6 .0-: 13.5, most preferably in the range of 8.0-13.0. If the molecular weight distribution of the polybutadiene rubber is too narrow, the rigidity and the low-temperature impact resistance of the impact-resistant resin composition obtained using the polybutadiene rubber become insufficient. Further, when the resin composition is diluted with an aromatic vinyl resin or the like, or when various additives are blended, the impact resistance is greatly reduced. This molecular weight distribution is too broad In this case, the effect of improving the impact resistance is reduced, and the rigidity is also reduced.
- the polybutadiene rubber used in the present invention has a cis-1,4 structure content (amount of cis-1,1,4 bonds) of at least 80% by weight, preferably at least 85%. More preferably, it is 90% or more. If the poly-1,4-structure content of the polybutadiene rubber is excessively low, the effect of improving the impact resistance at low temperatures is small.
- the microstructure of the remainder of the polybutadiene rubber is not particularly limited, but the 1,2-vinyl bond content is usually 1 to 10% by weight, preferably 1 to 5, and more preferably. Is preferred in the case of 2 to 4 because of excellent properties such as impact resistance.
- the polybutadiene rubber used in the present invention is 30% in toluene solution.
- the intrinsic viscosity [/?] Measured at ° C is in the range of 1.0 to 6.0.
- the intrinsic viscosity of the polybutadiene rubber is more preferably in the range of 1.5 to 4.5, more preferably in the range of 2.0 to 3.0.
- the resulting impact-resistant resin composition may be diluted with an aromatic vinyl resin or the like, or may be used in various ways. When additives are blended, the impact resistance is greatly reduced. If the intrinsic viscosity of the polybutadiene rubber is excessively large, the polybutadiene rubber may be dispersed as fine rubber particles in the matrix of the aromatic vinyl resin.
- the content ratio of each component is preferably from 30 to 98% by weight, more preferably from 40 to 97% by weight, most preferably from 40 to 97% by weight of the high molecular weight component.
- the content ratio of the high molecular weight component and the low molecular weight component in the polybutadiene rubber can be determined based on the mixing ratio of each of these components, but the molecular weight distribution curve measured by GPC of the polybutadiene rubber It can also be calculated from That is, according to the ratio of the area of two peaks separated by a vertical line from the lowest point (valley) between the bimodal peaks of the molecular weight distribution curve measured by GPC of polybutadiene rubber, The content ratio of each component can be calculated. In this case, since the area ratio of the two peaks does not correspond to the weight ratio, the area ratio of the high molecular weight component (a) and the area of the low molecular weight component (b) can be expressed as (a: b). , Preferably 30: 70-99: 1, more preferably 40: 60-95: 5, most preferably 50: 50-90: 10. Is within.
- the method for producing the polybutadiene rubber of the present invention is not particularly limited. For example, after producing each polybutadiene rubber corresponding to a high molecular weight component and a low molecular weight component, both components are mixed. It can be prepared by and. Polybutadiene rubber is usually prepared by polymerizing 1,3-butadiene in an inert organic solvent using a polymerization catalyst system containing a transition metal compound, an organic aluminum compound, and a polar compound. By doing so, it can be manufactured. At the time of polymerization, a molecular weight regulator and a gelling inhibitor can be used as necessary. The molecular weight of the polybutadiene rubber can be adjusted by adjusting the type and amount of catalyst used and the amount of molecular weight modifier used. Can be adjusted.
- the transition metal compound used in the present invention is not particularly limited as long as it has a transition metal and is soluble in a polymerization solvent. Usually, a transition metal salt compound is used. Transition metals are defined as metal elements with incomplete D or F subshells or metal elements that yield cations with such subshells, and are generally referred to as the revised IUPAC Inorganic Chemical Nomenclature ( 1989), elements of groups 3 to 11 of the periodic table. Specifically, for example, titanium, chromium, manganese, iron, cement, nickel, copper, yttrium, lanthanum, neodymium and the like are preferable. Iron, corn, nickel, and neodymium, particularly preferably corn and nickel.
- the salt compound examples include an organic acid salt and an organic complex salt.
- the carbon number of the organic acid salt or organic complex salt is not particularly limited, but is usually in the range of 1 to 80, preferably 2 to 25, and more preferably 3 to 20. is there. These transition metal compounds can be used alone or in combination of two or more.
- R is each independently selected from an alkyl group, an aryl group, and a cycloalkyl group, and is preferably an alkyl group.
- the number of carbon atoms in these groups is not particularly limited, but is usually in the range of 1 to 20, preferably 1 to 10, and more preferably 1 to 5.
- X represents a halogen atom.
- halogen atom examples include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom, and are preferably a chlorine atom and a bromine atom, and more preferably a chlorine atom.
- n represents 0, 1 or 2.
- the polar compounds include transition metal compounds and organic aluminum used.
- Compounds that do not interfere with the polymerization activity can be selected from water, alcohols, ethers, lucidic acid, and the like, by a combination of the nickel compounds.
- water is effective as a polar compound.
- the polar substance plays an important role in stably improving the catalytic activity and adjusting the molecular weight distribution and the degree of branching of the produced polymer.
- the polymerization solvent used in the present invention is not particularly limited as long as it dissolves polybutadiene rubber and does not adversely affect the activity of the polymerization catalyst.
- the polymerization solvent include aromatic hydrocarbons such as benzene, toluene, and quinrene; cyclohexane, methylcyclohexane, and cyclopentane.
- Alicyclic hydrocarbons such as ⁇ ; butane, n—hexane, n—saturated aliphatic hydrides such as heptane; cis-12-butene, trans1-2-butene , Butene—1 and other aliphatic unsaturated hydrocarbons;
- These inert organic solvents are used alone or in combination of two or more.
- the amount of the polymerization solvent to be used is adjusted so that the monomer concentration is usually in the range of 5 to 50% by weight, preferably 10 to 40% by weight.
- the molecular weight regulator is used as needed, but those generally used in the polymerization reaction of cis-1,4-polybutadiene rubber are used, and such as 1,2-butadiene are used. Cyclic gens such as cyclooctane are preferably used.
- the anti-gelling agent is used as needed.
- Louis base carboxylate esters and ortho acid esters are preferably used.
- the polymerization reaction of polybutadiene rubber may be either a batch type or a continuous type.
- the polymerization temperature is usually from 0 to 100, preferably from 10 to 60 ° C Range.
- the polymerization pressure is usually in the range of 0 to 5 atmospheres (gauge pressure).
- a polymerization terminator such as alcohol, an antioxidant, an antioxidant, and an ultraviolet absorber can be added to the reaction mixture. Then, the resulting polymer is washed, separated, and dried according to a conventional method to obtain the desired polybutadiene.
- the polybutadiene rubber of the present invention may be washed, separated and dried after polymerizing the high molecular weight component and the low molecular weight component at the same time, but after polymerizing each alone, the polybutadiene rubber is mixed with the reaction mixture of the high molecular weight component.
- the reaction mixture of low molecular weight components may be blended in a solution state, and then washed, separated and dried.
- the reaction mixture can be washed, separated, and dried alone, but the low molecular component is washed, separated, and dried alone.
- the low molecular weight component is in a liquid state, it is difficult to handle the production of the impact-resistant aromatic vinyl resin using the polybutadiene rubber of the present invention. It is preferable to render with.
- the polybutadiene rubber of the present invention is useful, for example, as a modifier for various resins such as an impact resistance modifier.
- the polybutadiene rubber of the present invention can be used as an impact modifier (toughening agent) for an impact-resistant aromatic vinyl resin composition.
- an impact modifier toughening agent
- the balance between impact resistance and rigidity is extremely high, and the impact resistance at low temperatures is good. It is possible to obtain an impact-resistant aromatic vinyl-based resin composition in which a decrease in physical properties due to dilution with an aromatic vinyl-based resin or blending of various additives is suppressed.
- the polybutadiene rubber of the present invention is usually used as an impact modifier, although it can be used alone, other rubbers may be used in combination as long as the object of the present invention is not impaired.
- Other rubbers include, for example, low cis-butadiene rubber, styrene-butadiene random copolymer rubber, and styrene-butadiene block copolymer.
- the amount of other rubbers is found that the total rubber components, usually 5 0 wt 0/0 or less, 4 0 by weight% and rather is favored below, rather then preferred Ri good 3 0 wt% or less, and It is more preferably at most 20% by weight.
- the aromatic vinyl resin that forms the matrix of the impact-resistant aromatic vinyl resin composition of the present invention is usually a single polymer of an aromatic vinyl monomer or an aromatic vinyl monomer. It is a copolymer of a polymer and a monomer copolymerizable therewith.
- the aromatic vinyl monomer include styrene, o-methylstyrene, p-methinorestylene, m-methinorestylene, 2,4—dimethylstyrene and ethylstyrene.
- Monomers copolymerizable with the aromatic vinyl monomer include, for example, acrylonitrile, methacrylonitrile, ⁇ -chloroacrylonitrile Ditolyl monomers such as tolyl: (meth) acrylic acid ester monomers such as methyl methacrylate and methyl acrylate; Unsaturated fatty acid-based monomers such as acrylic acid, methacrylic acid, and maleic anhydride; and vinyl maleimide. Of these, nitrile monomers, (meth) acrylic acid ester monomers, and unsaturated fatty acid monomers are preferred. The body is particularly preferred. The monomers copolymerizable with these aromatic vinyl monomers can be used alone or in combination of two or more.
- the ratio of the aromatic vinyl monomer and the monomer copolymerizable with the aromatic vinyl monomer in the aromatic vinyl resin forming the matrix is appropriately selected according to the intended use.
- Amount of monomer By weight ratio of (the amount of aromatic vinyl monomer and copolymerizable monomer), usually 20:80 to 100: 0, preferably It is in the range of 40:60 to 100: 0, more preferably in the range of 60:40 to 100: 0.
- the impact-resistant resin composition of the present invention can be obtained by, for example, mechanically mixing a polybutadiene rubber and an aromatic vinyl-based resin. It is preferable to produce by a method of performing a radical polymerization of an aromatic vinyl monomer or a mixture of an aromatic vinyl monomer and a monomer copolymerizable therewith in the presence of the monomer. .
- the production method in this case is not particularly limited, and examples thereof include a bulk polymerization method, a solution polymerization method, a suspension polymerization method, and a multi-stage polymerization method such as a bulk-suspension two-stage polymerization method. . Among these, the bulk polymerization method and the bulk-suspension two-stage polymerization method are particularly preferred.
- the bulk polymerization method is preferably a bulk continuous polymerization method.
- the proportion of polybutadiene rubber and monomer is determined by the resulting impact resistance.
- the weight ratio of (polybutadiene rubber) :( monomer) may be appropriately selected depending on the application of the resin composition, and is usually 1:99 to 40:60, preferably 2: 1. : 98 to 30: 70, more preferred Or within the range of 3:97 to 20:80.
- polybutadiene rubber can be copolymerized with an aromatic vinyl monomer or an aromatic vinyl monomer and a monomer capable of copolymerizing the same.
- a diluting solvent such as liquid paraffin / mineral oil, antioxidants, chain transfer agents, etc. as necessary, then polymerize
- polymerization is usually carried out at 80 to 200 ° C.
- polymerization is carried out usually at 20 to 200 ° C in the presence of a polymerization catalyst.
- the aromatic vinyl monomer or a mixture of the aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer) is polymerized until the polymerization conversion becomes 60 to 90%. In this case, it is more preferable to use a polymerization catalyst.
- the resulting impact-resistant resin composition is unreacted by a conventional method, for example, by extruding a solvent using a heating / reducing vacuum or an extruder designed to remove volatiles. It is possible to remove and recover monomers and diluting solvents.
- the obtained impact-resistant resin composition is pelletized or powdered for practical use as necessary.
- diluting solvent examples include aromatic hydrocarbons such as benzene, toluene, xylene, and ethylbenzene; cyclohexane, methylcyclohexane, and cyclohexane. Alicyclic hydrocarbons such as mouth pentane; aliphatic hydrocarbons such as n-butane, n-hexane, and n-heptane; ketones such as methylpyropene pilketone And the like, and are preferably aromatic hydrocarbons. These diluting solvents are used alone or in combination of two or more, and the amount of the diluting solvent is usually 0 to 25% by weight of all monomers.
- an organic peroxide or an azo-based catalyst is usually used, and an organic peroxide is preferable.
- an organic peroxide for example, 1,1,1-bis (t-butylphenoloxy) cyclohexane, 1,1-bis (t-butylperoxy) — 8,3,5—Peroxyke, such as trimethylsilcyclohexane Tars; di-n-butylperoxide, 2,5—dimethyl-2,5—dianol-peroxides such as di (t-butylperoxy) hexane; benzoylperoxide, m-Peroxysides such as toluene peroxydide; Peroxyesters such as dimethyl stilperoxy dicarbonate; Peroxyesters such as t-butyl peroxysodipropyl carbonate; Ketonperoxides, such as chlorohexanol nonperoxide; p — mentor, etc.
- the azo catalyst examples include azobisisoptironitrile and the like. These polymerization catalysts can be used alone or in combination of two or more.
- the amount of the polymerization catalyst to be used is generally 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, more preferably 100 to 100 parts by weight of the monomer. Is from 0.01 to 1 part by weight.
- chain transfer agent examples include, but are not limited to, ⁇ -methylstyrene dimer, ⁇ -dodecinolemenolecaptan, t-dodecylmenolecaptan, and other menolenic butanes; 1—phenylbutene-12 — Terpenes such as fluorene and dipentene; halogen compounds such as black-hole form o
- polymerization is usually partially performed until the polymerization conversion of the monomer reaches 30 to 50% in the same manner as in the bulk polymerization method described above.
- the chemically polymerized polymerization solution is treated with a suspension agent such as polyvinyl alcohol and carboxymethyl cellulose and / or a surfactant such as sodium dodecylbenzenesulfonate. In the presence, it is suspended in water to complete the reaction.
- the resulting impact-resistant resin composition is isolated by a method such as filtration and centrifugation, washed with water and dried, and pelletized or powdered as necessary.
- the average particle size of the polybutadiene rubber in the resin matrix (hereinafter, referred to as “rubber particle size”) is usually 0.0. It is in the range of 1-11011, preferably 0.1-5 m, more preferably 0.5-3 zm. When the rubber particle diameter is within this range, the rubber composition has excellent impact resistance and rigidity, and further, when used after dilution with an aromatic vinyl resin or the like, or when various additives are blended. The reduction in impact resistance can be suppressed.
- the impact-resistant resin composition of the present invention can be used by further diluting the impact-resistant resin composition obtained by the above polymerization with an aromatic vinyl resin.
- the amount of rubber is preferably in the range of 1 to 40% by weight, which is almost the same as the above.
- the impact-resistant resin composition of the present invention may contain various additives as desired.
- the additive include fatty acids or fatty acid salts such as stearic acid, zinc stearate, magnesium stearate, calcium stearate; Lisiloxane, mineral oil, antioxidants, stabilizers, UV absorbers, dyes, pigments, fillers, lubricants, release agents, plasticizers, anti-wrap compresses, flame retardants, etc.
- fatty acids or fatty acid salts such as stearic acid, zinc stearate, magnesium stearate, calcium stearate
- Lisiloxane mineral oil, antioxidants, stabilizers, UV absorbers, dyes, pigments, fillers, lubricants, release agents, plasticizers, anti-wrap compresses, flame retardants, etc.
- Can be The amounts of the various additives are appropriately selected according to the purpose of use.
- a halogen-based flame retardant is preferably used.
- various chlorine-based and bromine-based flame retardants can be used.
- Flame retardants include, for example, hexabromobenzene, pentabromoethylbenzene, hexabole mobilifenyl, decabromodifenyl, hexabole morphine dioxide, occ.
- Te Molyphtalic anhydride and its derivatives [for example, tetrabromobutanol imide, ethylen bis-tetrabromo phthalimide, etc.], ethylene bis (5, 6- Jib mouth Monobornane 2, 3 — dicarboximid), tris 1 (2, 3 — dibromopropyl 1) — isonurate, hexachlorocyclopentagen Adducts of trilus' alder reaction, tripromophenyl glycidyl ether, tribromophenyl acrylate, ethylene trihydrobromophenyl ether, ethylene bispenter Bromopheninolene ether, Tetradeca bromodiphenoxybenzene, brominated polystyrene, brominated polylenoxenide, brominated plastic resin, Polycarbonate, polypentabromone benzyl acrylate, octabutane monaphtalene, hex sub-mouth moshi
- the compounds represented by the following formulas (N 1) to (N 11) can be strongly mentioned.
- n is an integer of 0 or 1 or more.
- a halogenated bisphenol-type epoxy compound represented by the formula (N10) can be used as the flame retardant.
- X is a halogen atom
- R is a divalent hydrocarbon group
- m is an integer of 1-3
- n is 0 or an integer of 1 or more.
- epoxy compound of the formula (N10) those in which m is all 2, n is substantially 0, a halogen atom X is a bromine atom, and R is an isopropylidene group are preferred.
- a compound represented by the formula (Nl1) can be given.
- the halogenated bisphenol-type epoxy compound represented by the formula (N11) include those having a Br content of 20% by weight or 50% by weight. Are commercially available.
- the amount of the flame retardant to be added is usually 3 to 50 parts by weight based on 100 parts by weight of the impact-resistant resin composition.
- Examples of the flame retardant aids for more effectively exhibiting the flame retardant effect of the flame retardant include antimony trioxide, antimony pentoxide, sodium antimonate, and trichloride. Antimony-based flame retardant aids such as antimony can be used. These flame retardant auxiliaries are usually used in a proportion of 1 to 30 parts by weight, preferably 2 to 20 parts by weight, per 100 parts by weight of the flame retardant.
- Stabilizers include, for example, octadecyl—3— (3,5—di-t-butyl-4-hydroxyphenyl) propionate, tetrakis [methylen-1 3 (3,5 — di-tert-butyl-4-hydroxyphenyl) propionate] methane, ⁇ - (3,5—di-tert-butyl 4-hydroxifene) Phenyl) alkyl esters of propionic acid, 2,2'-oxamidobis [ethyl-3 (3,5—di-t-butyl-4-4-hydroxyphenyl) probionone] -Based oxidation prevention P
- Tris-noninolephenylphosphite, tris (2,4—g-t-brylphenyl) phosphite, tris (2,4-g-t) O Phenylphenyl) Phosphite and other phosphorus-based stabilizers can be mentioned.
- the filler various kinds of fillers such as organic or inorganic powders, granules, fibers and the like can be used. More specifically, the fillers include, for example, silica, gay alga earth, alumina, titanium oxide, magnesium oxide, pumice powder, pumice balloon, basic magnesium carbonate, and magnesium.
- the methods for measuring various physical properties are as follows.
- the infrared absorption spectrum was measured using an IR-700 infrared spectrophotometer manufactured by JASCO Corporation, and calculated by the Morello method.
- the measurement was carried out according to JISK7203.
- the particle diameter of the dispersed rubber in the resin composition was determined by dyeing the resin composition with osmium tetroxide, taking a photograph with a transmission electron microscope, and measuring the average particle diameter based on the following formula.
- Average particle size (major axis + minor axis) / 2
- Toluene / 2 Buteno 1, 3 — Butadiene (10/70/20 (% By weight) of 1,2-butadiene in the supply pipe at a rate of 70 kg / h to the polymerization reactor at a rate of 32.5 mmol / h and trimethyl orthoformate. 5.1 mmol per hour and 96 mmol per hour of water were added.
- the mixed solution was introduced into the polymerization reaction vessel while getyl aluminum monochloride was further added to the mixed solution at a rate of 320 mmol / h (as a toluene solution).
- a high molecular weight component (2) was obtained in the same manner as in Production Example 1, except that the amount of 1,2-butadiene added was changed to 260 millimoles per hour.
- the peak molecular weight of Si-1,4-polybutadiene obtained in this way was 610.1,000.
- Nickel naphthenate was added at 6 mmol / h from a pipe separate from the above-mentioned raw material mixture, and continuous polymerization was performed at 20 ° C. and a residence time of 2 hours for 24 hours.
- the reaction mixture of cis-1,4-polybutadiene formed from the second polymerization reactor was continuously withdrawn, and the polymerization reaction was stopped by adding methanol to reduce the low molecular weight components. Polybutadiene of (1) was obtained.
- the beaktop molecular weight of cis-1,4-polybutadiene obtained in this way was 22,500.
- a low molecular weight component (2) was obtained in the same manner as in Production Example 3, except that the amount of water added was changed to 116 millimoles / hour.
- the thus obtained cis-1,4-polybutadiene had a peak top molecular weight of 16,200.
- a low molecular weight component (3) was obtained in the same manner as in Production Example 2, except that the amount of 1,2-butadiene added was changed to 1037 millimoles / hour.
- the peak top molecular weight of the cis-1,4-polybutadiene obtained in this way was 205,000.
- reaction solution containing the high-molecular-weight component (1) obtained in Production Example 1 and the reaction solution containing the low-molecular-weight component (1) obtained in Production Example 3 were mixed in a polymer ratio of 70:30 (weight). Ratio), and then as an anti-aging agent, octadecyl 13- (3,5-j-t-petinole 4- 4-hydroxyphenyl) pro Add 0.2 phr of pionate and 0.4 phr of tris-nonyl phenylene phosphite (TNP) After team stripping, it was dehydrated and dried with an extrusion drier to obtain a sample of polystyrene rubber (A). Table 1 shows the measurement results of this sample (A).
- reaction solution containing the high molecular weight component (1) obtained in Production Example 1 and the reaction solution containing the low molecular weight component (2) obtained in Production Example 4 were converted into a polymer.
- Example 2 After blending so as to obtain a weight ratio of 60:40, post-treatment was carried out in the same manner as in Example 1 to obtain a polybutadiene rubber sample (C). Table 1 shows the measurement results of this sample (C).
- reaction solution containing the high molecular weight component (2) obtained in Production Example 2 and the reaction solution containing the low molecular weight component (3) obtained in Production Example 5 were converted into a polymer.
- Example 2 The mixture was blended so as to have a weight ratio of 70:30, and post-treatment was carried out in the same manner as in Example 1 to obtain a polybutadiene rubber sample (D). Table 1 shows the measurement results of this sample (D).
- Example 2 In a stainless steel reactor equipped with a stirrer, 180 g of the polybutadiene rubber sample (A) obtained in Example 1 was dissolved in 1820 g of styrene monomer. Add a chain transfer agent (n-dodecylmercaptane) to the styrene monomer at a rate of 25 ppm, and add 1 hour at 130 ° C. The mixture was stirred for 20 minutes for bulk polymerization.
- a chain transfer agent n-dodecylmercaptane
- the obtained impact-resistant polystyrene resin was kneaded with a roll at 180 ° C., formed into a sheet, and formed into a pellet with a sheet pelletizer.
- Test samples were prepared by injection molding the obtained pellets with an injection molding machine. Table 2 shows the measurement results of Izod impact strength, flexural modulus, and rubber particle diameter.
- the balance between impact resistance and rigidity is high, the low-temperature impact strength is good, and even when diluted with an aromatic vinyl resin or the like, or mixed with various additives.
- an impact-resistant aromatic vinyl resin composition in which a decrease in physical properties such as impact resistance is suppressed, a method for producing the same, and a novel polybutadiene rubber capable of providing the resin composition. Is done.
- the impact-resistant resin composition of the present invention can be suitably used in application fields where impact resistance and rigidity, particularly low-temperature impact strength are required.
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Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP97936845A EP0924256B1 (en) | 1996-08-21 | 1997-08-20 | Polybutadiene rubber and impact-resistant aromatic vinyl resin compositions |
US09/242,617 US6191226B1 (en) | 1996-08-21 | 1997-08-20 | Polybutadiene rubber and impact-resistant aromatic vinyl resin compositions |
DE69734886T DE69734886T2 (de) | 1996-08-21 | 1997-08-20 | Polybutadienkautschuk und schlagfeste aromatische vinylharzzusammensetzungen |
Applications Claiming Priority (2)
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JP23847196A JP3603294B2 (ja) | 1996-08-21 | 1996-08-21 | ポリブタジエンゴム及び耐衝撃性芳香族ビニル系樹脂組成物 |
JP8/238471 | 1996-08-21 |
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PCT/JP1997/002885 WO1998007783A1 (fr) | 1996-08-21 | 1997-08-20 | Caoutchouc de butadiene et compositions a base de resine vinylique aromatique resistantes aux chocs |
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US (1) | US6191226B1 (ja) |
EP (1) | EP0924256B1 (ja) |
JP (1) | JP3603294B2 (ja) |
DE (1) | DE69734886T2 (ja) |
WO (1) | WO1998007783A1 (ja) |
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US6114451A (en) * | 1997-08-21 | 2000-09-05 | Ube Industries, Ltd. | Rubber composition |
WO2000069928A2 (en) * | 1999-05-19 | 2000-11-23 | Bridgestone Corporation | Low molecular weight high-cis polybutadienes |
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JPH0655856B2 (ja) * | 1986-10-24 | 1994-07-27 | 住友化学工業株式会社 | ポリブタジエンゴム組成物 |
JPH075789B2 (ja) * | 1986-01-31 | 1995-01-25 | 宇部興産株式会社 | ポリブタジエンゴム組成物 |
JPH07233285A (ja) * | 1993-12-29 | 1995-09-05 | Bridgestone Corp | ゴム組成物 |
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BE642979A (ja) * | 1963-01-28 | 1964-05-15 | ||
JPS5636532A (en) * | 1979-09-04 | 1981-04-09 | Japan Synthetic Rubber Co Ltd | Rubber composition |
US4537936A (en) * | 1981-04-30 | 1985-08-27 | Sumitomo Chemical Company, Limited | Diene rubber composition, method of preparing the same and tire employing said composition |
FR2505342A1 (fr) * | 1981-05-07 | 1982-11-12 | Bp Chemical Ltd | Procede de fabrication d'un polymere vinyl-aromatique tres tenace |
CA1326575C (en) * | 1987-07-23 | 1994-01-25 | Yasushi Okamoto | Rubber-modified styrene resin composition |
JPH0414689A (ja) | 1990-05-08 | 1992-01-20 | Fuji Photo Film Co Ltd | 浮動ヘッドスライダ |
DE4218561A1 (de) | 1992-06-05 | 1993-12-09 | Bayer Ag | Thermoreaktives Aufzeichnungsmaterial mit besonderer Stabilität |
JPH075789A (ja) | 1993-06-16 | 1995-01-10 | Casio Electron Mfg Co Ltd | 定着装置 |
US5508336A (en) | 1993-12-29 | 1996-04-16 | Bridgestone Corporation | Rubber composition |
EP0751181B1 (en) * | 1995-06-30 | 2001-05-23 | Bridgestone Corporation | A rubber composition and a tire using said composition |
-
1996
- 1996-08-21 JP JP23847196A patent/JP3603294B2/ja not_active Expired - Fee Related
-
1997
- 1997-08-20 WO PCT/JP1997/002885 patent/WO1998007783A1/ja active IP Right Grant
- 1997-08-20 US US09/242,617 patent/US6191226B1/en not_active Expired - Lifetime
- 1997-08-20 DE DE69734886T patent/DE69734886T2/de not_active Expired - Fee Related
- 1997-08-20 EP EP97936845A patent/EP0924256B1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH075789B2 (ja) * | 1986-01-31 | 1995-01-25 | 宇部興産株式会社 | ポリブタジエンゴム組成物 |
JPH0655856B2 (ja) * | 1986-10-24 | 1994-07-27 | 住友化学工業株式会社 | ポリブタジエンゴム組成物 |
JPH0570628A (ja) * | 1991-09-13 | 1993-03-23 | Ube Ind Ltd | ポリブタジエンゴム及びそれを用いた耐衝撃性ポリスチレン系樹脂 |
JPH07233285A (ja) * | 1993-12-29 | 1995-09-05 | Bridgestone Corp | ゴム組成物 |
Non-Patent Citations (1)
Title |
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See also references of EP0924256A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6114451A (en) * | 1997-08-21 | 2000-09-05 | Ube Industries, Ltd. | Rubber composition |
WO2000069928A2 (en) * | 1999-05-19 | 2000-11-23 | Bridgestone Corporation | Low molecular weight high-cis polybutadienes |
WO2000069928A3 (en) * | 1999-05-19 | 2002-01-17 | Bridgestone Corp | Low molecular weight high-cis polybutadienes |
US6437205B1 (en) | 1999-05-19 | 2002-08-20 | Bridgestone Corporation | Low molecular weight high-cis polybutadienes and their use in high molecular weight-low molecular weight high-cis polybutadiene blends |
Also Published As
Publication number | Publication date |
---|---|
DE69734886D1 (de) | 2006-01-19 |
EP0924256B1 (en) | 2005-12-14 |
JPH1060174A (ja) | 1998-03-03 |
US6191226B1 (en) | 2001-02-20 |
DE69734886T2 (de) | 2006-08-10 |
EP0924256A4 (en) | 2004-05-26 |
JP3603294B2 (ja) | 2004-12-22 |
EP0924256A1 (en) | 1999-06-23 |
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