WO2018128288A1 - 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 - Google Patents
변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 Download PDFInfo
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- WO2018128288A1 WO2018128288A1 PCT/KR2017/014419 KR2017014419W WO2018128288A1 WO 2018128288 A1 WO2018128288 A1 WO 2018128288A1 KR 2017014419 W KR2017014419 W KR 2017014419W WO 2018128288 A1 WO2018128288 A1 WO 2018128288A1
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- WIPO (PCT)
- Prior art keywords
- conjugated diene
- modified conjugated
- reactor
- based polymer
- bis
- Prior art date
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- 229920000642 polymer Polymers 0.000 title claims abstract description 153
- 150000001993 dienes Chemical class 0.000 title claims abstract description 107
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- 239000005060 rubber Substances 0.000 title claims abstract description 62
- 239000000203 mixture Substances 0.000 title claims abstract description 32
- 238000009826 distribution Methods 0.000 claims abstract description 37
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- 238000005227 gel permeation chromatography Methods 0.000 claims abstract description 27
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- 239000003607 modifier Substances 0.000 claims description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 21
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- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 5
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- 239000006087 Silane Coupling Agent Substances 0.000 description 4
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- 238000004458 analytical method Methods 0.000 description 4
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- 125000005842 heteroatom Chemical group 0.000 description 4
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- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 4
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- 239000004636 vulcanized rubber Substances 0.000 description 4
- VUFKMYLDDDNUJS-UHFFFAOYSA-N 2-(ethoxymethyl)oxolane Chemical compound CCOCC1CCCO1 VUFKMYLDDDNUJS-UHFFFAOYSA-N 0.000 description 3
- FZLHAQMQWDDWFI-UHFFFAOYSA-N 2-[2-(oxolan-2-yl)propan-2-yl]oxolane Chemical compound C1CCOC1C(C)(C)C1CCCO1 FZLHAQMQWDDWFI-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
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- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 3
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- GSYVJAOBRKCNOT-UHFFFAOYSA-N diethoxymethyl-[3-[3-(diethoxymethylsilyl)propyltetrasulfanyl]propyl]silane Chemical compound CCOC(OCC)[SiH2]CCCSSSSCCC[SiH2]C(OCC)OCC GSYVJAOBRKCNOT-UHFFFAOYSA-N 0.000 description 1
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- ODZPKZBBUMBTMG-UHFFFAOYSA-N sodium amide Chemical compound [NH2-].[Na+] ODZPKZBBUMBTMG-UHFFFAOYSA-N 0.000 description 1
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- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
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- 150000003606 tin compounds Chemical class 0.000 description 1
- ASAOXGWSIOQTDI-UHFFFAOYSA-N triethoxy-[2-(2-triethoxysilylethyltetrasulfanyl)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)CCSSSSCC[Si](OCC)(OCC)OCC ASAOXGWSIOQTDI-UHFFFAOYSA-N 0.000 description 1
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 1
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 1
- KLFNHRIZTXWZHT-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltrisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSCCC[Si](OCC)(OCC)OCC KLFNHRIZTXWZHT-UHFFFAOYSA-N 0.000 description 1
- QKJGTZOWMVHEHS-UHFFFAOYSA-N triethoxy-[3-(phenyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSC1=CC=CC=C1 QKJGTZOWMVHEHS-UHFFFAOYSA-N 0.000 description 1
- YYHRCUUECDJXPQ-UHFFFAOYSA-N triethoxy-[3-[4-[3-[ethoxy(dimethyl)silyl]propyl]piperazin-1-yl]propyl]silane Chemical compound C(C)O[Si](CCCN1CCN(CC1)CCC[Si](OCC)(OCC)OCC)(C)C YYHRCUUECDJXPQ-UHFFFAOYSA-N 0.000 description 1
- JSXKIRYGYMKWSK-UHFFFAOYSA-N trimethoxy-[2-(2-trimethoxysilylethyltetrasulfanyl)ethyl]silane Chemical compound CO[Si](OC)(OC)CCSSSSCC[Si](OC)(OC)OC JSXKIRYGYMKWSK-UHFFFAOYSA-N 0.000 description 1
- JTTSZDBCLAKKAY-UHFFFAOYSA-N trimethoxy-[3-(3-trimethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCSSSSCCC[Si](OC)(OC)OC JTTSZDBCLAKKAY-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- C08C19/44—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
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- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
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- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
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- C08C19/25—Incorporating silicon atoms into the molecule
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- 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
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/0025—Crosslinking or vulcanising agents; including accelerators
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/548—Silicon-containing compounds containing sulfur
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L47/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds; Compositions of derivatives of such polymers
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- 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
- C08F2/00—Processes of polymerisation
- C08F2/001—Multistage polymerisation processes characterised by a change in reactor conditions without deactivating the intermediate polymer
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- 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
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- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/06—Butadiene
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- C—CHEMISTRY; METALLURGY
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/02—Low molecular weight, e.g. <100,000 Da.
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- 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
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/03—Narrow molecular weight distribution, i.e. Mw/Mn < 3
-
- 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
- C08F2500/00—Characteristics or properties of obtained polyolefins; Use thereof
- C08F2500/21—Rubbery or elastomeric properties
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to a modified conjugated diene-based polymer, and more particularly, to a modified conjugated diene-based polymer prepared by continuous polymerization, having excellent processability, and having a narrow molecular weight distribution and excellent physical properties, and a rubber composition comprising the same.
- a method of reducing the hysteresis loss of the vulcanized rubber In order to reduce the rolling resistance of the tire, there is a method of reducing the hysteresis loss of the vulcanized rubber.
- As an evaluation index of the vulcanized rubber a repulsive elasticity of 50 ° C. to 80 ° C., tan ⁇ , Goodrich heat generation and the like are used. That is, a rubber material having a high resilience at the above temperature, or a small tan ⁇ and good rich heat generation is preferable.
- the greatest advantage of solution polymerization over emulsion polymerization is that the vinyl structure content and styrene content that define rubber properties can be arbitrarily controlled, and molecular weight and physical properties can be adjusted by coupling or modification. It can be adjusted. Therefore, it is easy to change the structure of the final manufactured SBR or BR, and can reduce the movement of the chain end by the binding or modification of the chain end and increase the bonding strength with the filler such as silica or carbon black. It is used a lot as a rubber material.
- solution polymerization SBR When such a solution polymerization SBR is used as a rubber material for tires, by increasing the vinyl content in the SBR, the glass transition temperature of the rubber can be increased to not only control tire demand properties such as running resistance and braking force, but also increase the glass transition temperature. Proper adjustment can reduce fuel consumption.
- the solution polymerization SBR is prepared using an anionic polymerization initiator, and is used by binding or modifying the chain ends of the formed polymer using various modifiers. For example, US Pat. No.
- 4,397,994 discloses a technique in which the active anion at the chain end of a polymer obtained by polymerizing styrene-butadiene in a nonpolar solvent using alkyllithium, which is a monofunctional initiator, is bound using a binder such as a tin compound. It was.
- the polymerization of the SBR or BR may be carried out by batch (batch) or continuous polymerization, by the batch polymerization, the molecular weight distribution of the polymer produced is advantageous in terms of improving the physical properties, but the productivity is low and There is a problem of poor workability, and in case of the continuous polymerization, the polymerization is continuously made, thus the productivity is excellent, and there is an advantage in terms of processability improvement.
- the productivity is excellent, and there is an advantage in terms of processability improvement.
- there is a problem of poor physical properties due to wide molecular weight distribution Thus, in the production of SBR or BR, the situation is constantly being researched to improve both productivity, processability and physical properties at the same time.
- the present invention has been made in order to solve the problems of the prior art, a modified conjugated diene-based polymer prepared by continuous polymerization and excellent in processability, excellent physical properties such as tensile properties, excellent viscoelastic properties, and the like It is an object to provide a rubber composition.
- the present invention has a molecular weight distribution curve by gel permeation chromatography (GPC) has a unimodal form, molecular weight distribution (PDI; Provided is a modified conjugated diene-based polymer having a MWD) of less than 1.7, a Si content of 100 ppm or more based on weight, and comprising more than 0 wt% to less than 15 wt% of repeating units derived from an aromatic vinyl monomer.
- GPC gel permeation chromatography
- PDI molecular weight distribution
- the present invention also provides a rubber composition comprising the modified conjugated diene-based polymer and a filler.
- the modified conjugated diene-based polymer according to the present invention is produced for continuous polymerization, it has excellent processability and has a narrow molecular weight distribution that is equivalent to or higher than that of the modified conjugated diene-based polymer produced by batch polymerization. It is excellent in physical properties and excellent in viscoelastic properties.
- Figure 1 shows the molecular weight distribution curve by gel permeation chromatography (GPC) of the modified conjugated diene-based polymer of Example 4 according to an embodiment of the present invention.
- Figure 2 shows the molecular weight distribution curve by gel permeation chromatography (GPC) of the modified conjugated diene-based polymer of Example 5 according to an embodiment of the present invention.
- Figure 3 shows the molecular weight distribution curve by gel permeation chromatography (GPC) of the modified conjugated diene-based polymer of Comparative Example 5 according to an embodiment of the present invention.
- the modified conjugated diene-based polymer according to the present invention has a molecular weight distribution curve by gel permeation chromatography (GPC) has a unimodal form, a molecular weight distribution (PDI; MWD) is less than 1.7, Si content It may be 100 ppm or more based on this weight, and may include more than 0 wt% to less than 15 wt% of an aromatic vinyl monomer-derived repeating unit.
- GPC gel permeation chromatography
- the modified conjugated diene-based polymer may include a repeating unit derived from a conjugated diene monomer and a functional group derived from a modifier.
- the conjugated diene-based monomer-derived repeating unit may mean a repeating unit formed when the conjugated diene-based monomer is polymerized, and the modifier-derived functional group is present at one end of the active polymer through a reaction or coupling between the active polymer and the modifying agent. It can mean a functional group derived from.
- the conjugated diene monomer is 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, isoprene, 2 It may be at least one selected from the group consisting of -phenyl-1,3-butadiene and 2-halo-1,3-butadiene (halo means halogen atom).
- the modified conjugated diene-based polymer is a copolymer containing an aromatic vinyl monomer-derived repeating unit, it may include an aromatic vinyl monomer-derived repeating unit in more than 0% by weight to less than 15% by weight, rolling resistance within this range And an excellent balance between wet road resistance.
- the aromatic vinyl monomer is, for example, styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, 4- (p-methylphenyl) styrene, 1 -Vinyl-5-hexylnaphthalene, 3- (2-pyrrolidino ethyl) styrene, 3- (2-pyrrolidino ethyl) styrene, 4- (2-pyrrolidino ethyl) styrene ) styrene) and 3- (2-pyrrolidino-1-methyl ethyl) - ⁇ -methylstyrene (3- (2-pyrrolidino-1-methyl ethyl) styrene).
- the modified conjugated diene-based polymer may be a copolymer further comprising a diene-based monomer derived from C 1 to 10 together with the repeating unit derived from the conjugated diene monomer.
- the diene monomer-derived repeating unit may be a repeating unit derived from a diene monomer different from the conjugated diene monomer, and the diene monomer different from the conjugated diene monomer may be, for example, 1,2-butadiene. .
- the modified conjugated diene-based polymer is a copolymer further comprising a diene monomer
- the modified conjugated diene-based polymer is more than 0% to 1% by weight, greater than 0% to 0.1% by weight of the repeating unit derived from the diene monomer, It may be included in more than 0% by weight to 0.01% by weight, or more than 0% by weight to 0.001% by weight, there is an effect of preventing the gel production within this range.
- the copolymer may be a random copolymer, in this case there is an excellent balance between the physical properties.
- the random copolymer may mean that the repeating units constituting the copolymer are randomly arranged.
- the modified conjugated diene-based polymer according to an embodiment of the present invention has a number average molecular weight (Mn) of 1,000 g / mol to 2,000,000 g / mol, 10,000 g / mol to 1,000,000 g / mol, or 100,000 g / mol to 800,000 g / mol, the weight average molecular weight (Mw) may be 1,000 g / mol to 3,000,000 g / mol, 10,000 g / mol to 2,000,000 g / mol, or 100,000 g / mol to 2,000,000 g / mol, within this range Cloud resistance and wet road resistance is excellent effect.
- Mn number average molecular weight
- the modified conjugated diene-based polymer may have a molecular weight distribution (PDI; MWD; Mw / Mn) of less than 1.7, 1.0 or more and less than 1.7, or 1.1 or more and less than 1.7, and tensile and viscoelastic properties within this range. It is excellent in this and there exists an effect which is excellent in the balance between each physical property.
- PDI molecular weight distribution
- the modified conjugated diene-based polymer has a molecular weight distribution curve by gel permeation chromatography (GPC) has a unimodal form, which is a molecular weight distribution appearing in the polymer polymerized by continuous polymerization
- GPC gel permeation chromatography
- the modified conjugated diene-based polymer has a uniform characteristic. That is, the modified conjugated diene-based polymer according to an embodiment of the present invention may be prepared by continuous polymerization, and may have a molecular weight distribution curve of less than 1.7 while having a unimodal molecular weight distribution curve.
- the modified conjugated diene-based polymer may have a Si content of 100 ppm or more, 100 ppm to 10,000 ppm, or 100 ppm to 5,000 ppm by weight, and includes a modified conjugated diene-based polymer within this range.
- the Si content may refer to the content of Si atoms present in the modified conjugated diene-based polymer.
- the Si atom may be derived from a modifier-derived functional group.
- the Si content may be measured by, for example, an ICP analysis method, and the ICP analysis method may be measured using an inductively coupled plasma emission analyzer (ICP-OES; Optima 7300DV).
- ICP-OES inductively coupled plasma emission analyzer
- about 0.7 g of the sample was placed in a platinum crucible (Pt crucible), about 1 mL of concentrated sulfuric acid (98 wt%, Electronic grade) was heated at 300 ° C. for 3 hours, and the sample was After the conversation in the electric furnace (Thermo Scientific, Lindberg Blue M) in the program of steps 1 to 3,
- step 1 initial temp 0 °C, rate (temp / hr) 180 °C / hr, temp (holdtime) 180 °C (1hr)
- step 2 initial temp 180 °C, rate (temp / hr) 85 °C / hr, temp (holdtime) 370 °C (2hr)
- step 3 initial temp 370 °C, rate (temp / hr) 47 °C / hr, temp (holdtime) 510 °C (3hr)
- the modified conjugated diene-based polymer has a polymer component of at least 100,000 g / mol of molecular weight in terms of standard polystyrene converted by gel permeation chromatography, unimodal, a molecular weight distribution (PDI; MWD) of 2.0 or less, and a number average molecular weight.
- PDI molecular weight distribution
- the modified conjugated diene-based polymer has a Mooney viscosity (Mooney viscosity) at 100 °C, 30 or more, 40 to 150, or 40 to 140, there is an excellent workability and productivity within this range.
- Mooney viscosity Mooney viscosity
- the modified conjugated diene-based polymer may have a vinyl content of 5% by weight or more, 10% by weight or more, or 10% by weight to 60% by weight.
- the vinyl content may refer to the content of 1,2-added conjugated diene-based monomers, not 1,4-addition, based on 100% by weight of the conjugated diene-based copolymer composed of a monomer having a vinyl group and an aromatic vinyl monomer. Can be.
- the modifier according to the present invention may be a modifier for modifying the terminal of the conjugated diene-based polymer, and may be, for example, a silica affinity modifier.
- the silica affinity modifier may mean a modifier containing a silica affinity functional group in a compound used as a modifier, the silica affinity functional group is excellent in affinity with the filler, in particular silica-based filler, It may mean a functional group capable of interaction between the functional group derived from the denaturant.
- the modifier may be, for example, an alkoxy silane modifier, and specifically, may be an alkoxy silane modifier containing one or more hetero atoms such as a nitrogen atom, an oxygen atom, or a sulfur atom.
- modification may be performed in a form in which one end of the active polymer is bonded to the silyl group through a substitution reaction between an anion active site located at one end of the active polymer and an alkoxy group of the alkoxy silane-based modifier.
- the denaturant may be to include a compound represented by the following formula (1).
- R 1 may be a single bond, or an alkylene group having 1 to 10 carbon atoms
- R 2 and R 3 may each independently be an alkyl group having 1 to 10 carbon atoms
- R 4 may be hydrogen or 1 to carbon atoms.
- R 21 is a single bond, an alkylene group having 1 to 10 carbon atoms , Or- [R 42 O] j- , R 42 may be an alkylene group having 1 to 10 carbon atoms, a and m may be each independently an integer selected from 1 to 3, n is 0, 1, Or an integer of 2, j may be an integer selected from 1 to 30.
- R 1 may be a single bond or an alkylene group having 1 to 5 carbon atoms
- R 2 and R 3 may be each independently hydrogen, an alkyl group having 1 to 5 carbon atoms
- R 4 is Hydrogen, a tetravalent alkylsilyl group substituted with an alkyl group having 1 to 5 carbon atoms, an alkyl group having 1 to 5 carbon atoms, or a heterocyclic group having 2 to 5 carbon atoms
- R 21 is a single bond or an alkylene group having 1 to 5 carbon atoms
- R 42 may be an alkylene group having 1 to 5 carbon atoms
- a may be an integer of 2 or 3
- m may be an integer selected from 1 to 3
- the heterocyclic group when R 4 is a heterocyclic group, the heterocyclic group may be unsubstituted or substituted with a trisubstituted alkoxy silyl group, and when the heterocyclic group is substituted with a trisubstituted alkoxy silyl group, the trisubstituted alkoxy silyl group It may be substituted by being connected to the heterocyclic group by an alkylene group having 1 to 10 carbon atoms, the tri-substituted alkoxy silyl group may mean an alkoxy silyl group substituted with an alkoxy group having 1 to 10 carbon atoms.
- the compound represented by Chemical Formula 1 is N, N-bis (3- (dimethoxy (methyl) silyl) propyl) -methyl-1-amine (N, N-bis (3- (dimethoxy (methyl)) silyl) propyl) -methyl-1-amine), N, N-bis (3- (diethoxy (methyl) silyl) propyl) -methyl-1-amine (N, N-bis (3- (diethoxy (methyl)) silyl) propyl) -methyl-1-amine), N, N-bis (3- (trimethoxysilyl) propyl) -methyl-1-amine (N, N-bis (3- (trimethoxysilyl) propyl) -methyl -1-amine), N, N-bis (3- (triethoxysilyl) propyl) -methyl-1-amine (N, N-bis (3- (triethoxysilyl) propyl) -methyl-1-amine), N, N-diethyl-3- (trimethoxy
- the denaturant may include a compound represented by Formula 2 below.
- R 5 , R 6 and R 9 may be each independently an alkylene group having 1 to 10 carbon atoms
- R 7 , R 8 , R 10 and R 11 are each independently an alkyl group having 1 to 10 carbon atoms.
- R 12 may be hydrogen or an alkyl group having 1 to 10 carbon atoms
- b and c may each independently be 0, 1, 2 or 3
- b + c ⁇ 1 and A may be or
- R 13 , R 14 , R 15 and R 16 may be each independently hydrogen or an alkyl group having 1 to 10 carbon atoms.
- the compound represented by Chemical Formula 2 may be N- (3- (1H-imidazol-1-yl) propyl) -3 (triethoxysilyl) -N- (3- (triethoxysilyl) propyl ) Propane-1-amine (N- (3- (1H-imidazol-1-yl) propyl) -3- (triethoxysilyl) -N- (3- (triethoxysilyl) propyl) propan-1-amine) and 3- ( 4,5-dihydro-1H-imidazol-1-yl) -N, N-bis (3- (triethoxysilyl) propyl) propan-1-amine (3- (4,5-dihydro-1H- imidazol-1-yl) -N, N-bis (3- (triethoxysilyl) propyl) propan-1-amine) may be one selected from the group consisting of.
- the denaturant may include a compound represented by Formula 3 below.
- a 1 and A 2 may each independently be a divalent hydrocarbon group having 1 to 20 carbon atoms, including or without an oxygen atom, and R 17 to R 20 are each independently monovalent having 1 to 20 carbon atoms. It may be a hydrocarbon group, L 1 to L 4 are each independently a divalent, trivalent or tetravalent alkylsilyl group substituted with an alkyl group having 1 to 10 carbon atoms, or a monovalent hydrocarbon group having 1 to 20 carbon atoms, or L 1 and L 2 and L 3 and L 4 may be linked to each other to form a ring having 1 to 5 carbon atoms, and when L 1 and L 2 and L 3 and L 4 are connected to each other to form a ring, the ring formed may be It may include one to three heteroatoms selected from the group consisting of N, O and S.
- a 1 and A 2 may be each independently an alkylene group of 1 to 10
- R 17 to R 20 may be each independently an alkyl group having 1 to 10 carbon atoms
- L 1 to L 4 is independently a tetravalent alkylsilyl group substituted with an alkyl group having 1 to 5 carbon atoms, an alkyl group having 1 to 10 carbon atoms, or L 1 and L 2 and L 3 and L 4 are connected to each other to form a ring having 1 to 3 carbon atoms
- the ring formed may include one or more heteroatoms selected from the group consisting of N, O, and S; It can contain three.
- the compound represented by Formula 3 is 3,3 '-(1,1,3,3-tetramethoxydisiloxane-1,3-diyl) bis (N, N-dimethylpropan-1-amine) (3,3 '-(1,1,3,3-tetramethoxydisiloxane-1,3-diyl) bis (N, N-dimethylpropan-1-amine), 3,3'-(1,1,3,3- Tetraethoxydisiloxane-1,3-diyl) bis (N, N-dimethylpropan-1-amine) (3,3 '-(1,1,3,3-tetraethoxydisiloxane-1,3-diyl) bis ( N, N-dimethylpropan-1-amine), 3,3 '-(1,1,3,3-tetrapropoxydisiloxane-1,3-diyl) bis (N, N-dimethylpropan-1-amine) (3,3 '-(1,1,3,3-t
- the denaturant may include a compound represented by the following Formula 4.
- R 22 and R 23 are each independently an alkylene group having 1 to 20 carbon atoms, or -R 28 [OR 29 ] f-
- R 24 to R 27 are each independently an alkyl group having 1 to 20 carbon atoms or It may be an aryl group having 6 to 20 carbon atoms
- R 28 and R 29 may be each independently an alkylene group having 1 to 20 carbon atoms
- R 47 and R 48 may be each independently a divalent hydrocarbon group having 1 to 6 carbon atoms
- d and e are each independently 0, or an integer selected from 1 to 3
- d + e is an integer of 1 or more
- f may be an integer of 1 to 30.
- R 22 and R 23 may be each independently an alkylene group having 1 to 10 carbon atoms, or -R 28 [OR 29 ] f- , and R 24 to R 27 are each independently 1 It may be an alkyl group of 10 to 10, R 28 and R 29 may be each independently an alkylene group having 1 to 10 carbon atoms, d and e are each independently 0, or an integer selected from 1 to 3, d + e is It may be an integer of 1 or more, f may be an integer selected from 1 to 30.
- the compound represented by Chemical Formula 4 may be a compound represented by Chemical Formula 4a, Chemical Formula 4b, or Chemical Formula 4c.
- R 22 to R 27 , d, and e are as described above.
- the compound represented by Chemical Formula 4 may be selected from 1,4-bis (3- (3- (triethoxysilyl) propoxy) propyl) piperazine (1,4-bis (3- (3- (triethoxysilyl) propoxy) propyl) piperazine, 1,4-bis (3- (triethoxysilyl) propyl) piperazine (1,4-bis (3- (triethoxysilyl) propyl) piperazine), 1,4-bis (3- (Trimethoxysilyl) propyl) piperazine (1,4-bis (3- (trimethoxysilyl) propyl) piperazine), 1,4-bis (3- (dimethoxymethylsilyl) propyl) piperazine (1,4- bis (3- (dimethoxymethylsilyl) propyl) piperazine), 1- (3- (ethoxydimethylsilyl) propyl) -4- (3- (triethoxysilyl) propyl) piperazine (1- (3- (ethoxy
- the denaturant may include a compound represented by the following Formula 5.
- R 30 may be a monovalent hydrocarbon group having 1 to 30 carbon atoms
- R 31 to R 33 may each independently be an alkylene group having 1 to 10 carbon atoms
- R 34 to R 37 may each independently be carbon atoms. It may be an alkyl group of 1 to 10, g and h are each independently 0, or an integer selected from 1 to 3, g + h may be an integer of 1 or more.
- the denaturant may include a compound represented by the following Formula 6.
- a 3 and A 4 may each independently be an alkylene group having 1 to 10
- R 38 to R 41 may be each independently an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms.
- i may be an integer selected from 1 to 30.
- the denaturing agent is 3,4-bis (2-methoxydeoxy) -N- (4- (triethoxysilyl) butyl) aniline (3,4-bis (2-methoxyethoxy) -N- ( 4- (trimethylsilyl) butyl) aniline), N, N-diethyl-3- (7-methyl-3,6,8,11-tetraoxa-7-silatridecan-7-yl) propan-1-amine (N, N-diethyl-3- (7-methyl-3,6,8,11-tetraoxa-7-silatridecan-7-yl) propan-1-amine), 2,4-bis (2-methoxyde Methoxy) -6-((trimethylsilyl) methyl) -1,3,5-triazine (2,4-bis (2-methoxyethoxy) -6-((trimethylsilyl) methyl) -1,3,5-triazine) And 3,14-dimethoxy-3,8,8,13
- the denaturant may include a compound represented by the following Formula 7.
- R 43 , R 45, and R 46 may be each independently an alkyl group having 1 to 10 carbon atoms, R 44 may be an alkylene group having 1 to 10 carbon atoms, and k may be an integer selected from 1 to 4 have.
- the compound represented by Chemical Formula 7 is 8,8-dibutyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-dithia-3,13- Disila-8-stanpentadecane (8,8-dibutyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-dithia-3,13-disila-8-stannapentadecane), 8,8-dimethyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-dithia-3,13-disila-8-stanpentadecane (8,8- dimetyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-dithia-3,13-disila-8-stanpentadecane (8,8- dimetyl-3,13-dimethoxy-3
- the term 'monovalent hydrocarbon group' refers to a monovalent atomic group in which carbon and hydrogen are bonded, such as a monovalent alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, a cycloalkyl group and an aryl group including one or more unsaturated bonds.
- the minimum number of carbon atoms of the substituent represented by the monovalent hydrocarbon may be determined according to the type of each substituent.
- the term 'bivalent hydrocarbon group' is a two-membered carbon and hydrogen, such as a divalent alkylene group, an alkenylene group, an alkynylene group, a cycloalkylene group, a cycloalkylene group including one or more unsaturated bonds, and an arylene group. It may mean a valence atom group, and the minimum number of carbon atoms of a substituent represented by a divalent hydrocarbon may be determined according to the type of each substituent.
- the term 'alkyl group' may mean a monovalent aliphatic saturated hydrocarbon, and may be linear alkyl groups such as methyl, ethyl, propyl and butyl, and isopropyl, sec-butyl, tertiary, It may be meant to include all branched alkyl groups such as tert-butyl and neo-pentyl.
- alkylene group may refer to a divalent aliphatic saturated hydrocarbon such as methylene, ethylene, propylene and butylene.
- alkenyl group' may refer to an alkyl group including one or two or more double bonds.
- alkynyl group' may refer to an alkyl group including one or two or more triple bonds.
- cycloalkyl group may mean both cyclic saturated hydrocarbons or cyclic unsaturated hydrocarbons containing one or two or more unsaturated bonds.
- the term 'aryl group' may mean a cyclic aromatic hydrocarbon, and also a monocyclic aromatic hydrocarbon in which one ring is formed, or a polycyclic aromatic hydrocarbon in which two or more rings are combined. hydrocarbons) can be included.
- heterocyclic group' may mean both a cycloalkyl group or an aryl group in which a carbon atom in a cycloalkyl group or an aryl group is substituted with one or more hetero atoms.
- the present invention provides a method for producing a modified conjugated diene-based polymer in order to produce the modified conjugated diene-based polymer.
- the modified conjugated diene-based polymer manufacturing method comprises the steps of polymerizing a conjugated diene-based monomer and an aromatic vinyl monomer in the presence of an organometallic compound in a hydrocarbon solvent to prepare an active polymer combined with an organic metal (S1); And reacting or coupling the active polymer prepared in the step (S1) with the denaturant (S2), wherein the step (S1) is carried out continuously in two or more polymerization reactors, and the first of the polymerization reactors.
- the polymerization conversion rate in the reactor may be 50% or less.
- the hydrocarbon solvent is not particularly limited, but may be, for example, one or more selected from the group consisting of n-pentane, n-hexane, n-heptane, isooctane, cyclohexane, toluene, benzene and xylene.
- the organometallic compound is 0.01 mmol to 10 mmol, 0.05 mmol to 5 mmol, 0.1 mmol to 2 mmol, 0.1 mmol to 1 mmol, or 0.15 to 0.8 mmol based on 100 g of the total monomers
- the organometallic compound include methyllithium, ethyllithium, propyllithium, isopropyllithium, n-butyllithium, s-butyllithium, t-butyllithium, hexyllithium, n-decyllithium, t-octylithium and phenyllithium.
- the polymerization of the step (S1) may be, for example, anionic polymerization, and specifically, may be living anion polymerization having an anion active site at the end of the polymerization by a growth polymerization reaction by anion.
- the polymerization of the step (S1) may be a temperature increase polymerization, isothermal polymerization or constant temperature polymerization (thermal insulation polymerization)
- the constant temperature polymerization may include the step of polymerization by the heat of reaction without the addition of heat after the addition of the organometallic compound optionally
- the temperature polymerization may mean a polymerization method in which the temperature is increased by optionally adding heat after the organometallic compound is added, and the isothermal polymerization is heat after adding the organometallic compound. By adding to increase the heat or take the heat may mean a polymerization method for maintaining a constant temperature of the polymer.
- the polymerization in the step (S1) may be carried out by further comprising a diene-based compound having 1 to 10 carbon atoms in addition to the conjugated diene-based monomer, in this case, gel on the reactor wall surface for a long time operation It is effective to prevent this from being formed.
- a diene-based compound having 1 to 10 carbon atoms in addition to the conjugated diene-based monomer, in this case, gel on the reactor wall surface for a long time operation It is effective to prevent this from being formed.
- the diene compound may be 1,2-butadiene.
- the polymerization of the step (S1) may be carried out at a temperature range of 80 ° C or less, -20 ° C to 80 ° C, 0 ° C to 80 ° C, 0 ° C to 70 ° C, or 10 ° C to 70 ° C, for example.
- a temperature range of 80 ° C or less 80 ° C or less, -20 ° C to 80 ° C, 0 ° C to 80 ° C, 0 ° C to 70 ° C, or 10 ° C to 70 ° C, for example.
- the active polymer prepared by the step (S1) may refer to a polymer in which a polymer anion and an organic metal cation are combined.
- the active polymer prepared by the polymerization of the step (S1) may be a random copolymer, in this case, the balance between the physical properties is excellent effect.
- the random copolymer may mean that the repeating units constituting the copolymer are randomly arranged.
- the modified conjugated diene-based polymer manufacturing method may be carried out by a continuous polymerization method in a plurality of reactors including two or more polymerization reactors and a modified reactor.
- the step (S1) may be carried out continuously in two or more polymerization reactors including the first reactor, and the number of the polymerization reactors may be elastically determined according to the reaction conditions and environment.
- the continuous polymerization method may mean a reaction process of continuously supplying a reactant to the reactor and continuously discharging the generated reaction product. In the case of the continuous polymerization method, it is excellent in productivity and processability and excellent in uniformity of the polymer to be produced.
- the polymerization conversion rate in the first reactor may be 50% or less, 10% to 50%, or 20% to 50%, After the polymerization reactor is initiated within this range, it is possible to induce a polymer having a linear structure during polymerization by suppressing side reactions generated while the polymer is formed, and thus it is possible to narrowly control the molecular weight distribution of the polymer. The improvement is excellent.
- the polymerization conversion may be adjusted according to the reaction temperature, the reactor residence time.
- the polymerization conversion rate may be determined, for example, by measuring a solid concentration on a polymer solution containing a polymer when polymerizing the polymer.
- a cylindrical container may be mounted at the outlet of each polymerization reactor. After filling the cylindrical solution with the positive polymer solution, and separating the cylindrical container from the reactor to measure the weight (A) of the cylinder filled with the polymer solution, the polymer solution filled in the cylindrical container was replaced with an aluminum container, As an example, the weight (B) of the cylindrical container, which is transferred to an aluminum dish and free of the polymer solution, is measured, the aluminum container containing the polymer solution is dried in an oven at 140 ° C. for 30 minutes, and the weight (C) of the dried polymer is measured. After the measurement, it may be calculated according to the following equation (1).
- the polymerized in the first reactor is sequentially transferred to the polymerization reactor before the modification reactor, the polymerization may proceed until the polymerization conversion rate is at least 95%, and after the polymerization in the first reactor, the second reactor.
- the polymerization conversion rate of each reactor from the second reactor to the polymerization reactor before the modified reactor may be carried out by appropriately adjusting the respective reactors to control the molecular weight distribution.
- the polymer residence time in the first reactor may be 1 minute to 40 minutes, 1 minute to 30 minutes, or 5 minutes to 30 minutes, within this range, polymerization It is easy to control the conversion rate, and thus it is possible to narrowly adjust the molecular weight distribution of the polymer, whereby there is an effect of excellent physical property improvement.
- the term 'polymer' is carried out in each reactor during the step (S1), before the step (S1) or (S2) is completed to obtain an active polymer or a modified conjugated diene-based polymer. It can mean an intermediate in the form of a polymer being used, and can mean a polymer having a polymerization conversion of less than 95% in which polymerization is being carried out in the reactor.
- the molecular weight distribution (PDI, polydispersed index; MWD, molecular weight distribution; Mw / Mn) of the active polymer prepared in step (S1) is less than 1.5, 1.0 or more to less than 1.5, or 1.1
- the molecular weight distribution of the modified conjugated diene-based polymer prepared through the modification reaction or coupling with the modifier within this range may be less than or equal to 1.5, thereby improving the physical properties.
- the polymerization of the step (S1) may be carried out including a polar additive
- the polar additive is added in a ratio of 0.001g to 50g, 0.001g to 10g, or 0.005g to 0.1g based on a total of 100g monomer can do.
- the polar additive may be added in a ratio of 0.001 g to 10 g, 0.005 g to 5 g, and 0.005 g to 4 g based on 1 mmol of the total organometallic compound.
- polar additives examples include tetrahydrofuran, 2,2-di (2-tetrahydrofuryl) propane, diethyl ether, cycloamal ether, dipropyl ether, ethylene methyl ether, ethylene dimethyl ether, diethyl glycol, and dimethyl ether.
- Tertiary butoxyethoxyethane bis (3-dimethylaminoethyl) ether, (dimethylaminoethyl) ethyl ether, trimethylamine, triethylamine, tripropylamine, N, N, N ', N'-tetramethyl It may be one or more selected from the group consisting of ethylenediamine, sodium mentholate and 2-ethyl tetrahydrofurfuryl ether, preferably triethylamine, tetramethylethylenediamine, sodium Mentholate (sodium mentholate) or 2-ethyl tetrahydrofurfuryl ether (2-ethyl tetrahydrofurfuryl ether), when containing the polar additive conjugated diene monomer, Alternatively, when copolymerizing the conjugated diene monomer and the aromatic vinyl monomer, there is an effect of compensating the difference in their reaction rates so as to easily form a random
- the reaction or coupling of the step (S2) may be carried out in a modification reactor, wherein the denaturant may be used in an amount of 0.01 mmol to 10 mmol based on a total of 100 g of monomers. have.
- the denaturant may be used in a molar ratio of 1: 0.1 to 10, 1: 0.1 to 5, or 1: 0.1 to 1: 3, based on 1 mole of the organometallic compound of the step (S1).
- the denaturant may be added to the modification reactor, the step (S2) may be carried out in the modification reactor.
- the denaturant may be added to the transfer unit for transferring the active polymer prepared in the step (S1) to the modification reactor for performing the step (S2), and the mixture of the active polymer and the modifier in the transfer unit Reaction or coupling may proceed.
- a rubber composition comprising the modified conjugated diene-based polymer.
- the rubber composition may include the modified conjugated diene-based polymer in an amount of 10 wt% or more, 10 wt% to 100 wt%, or 20 wt% to 90 wt%, and within this range, tensile strength, wear resistance, and the like. It is excellent in the mechanical properties of and excellent in the balance between each physical property.
- the rubber composition may further include other rubber components as needed in addition to the modified conjugated diene-based polymer, wherein the rubber components may be included in an amount of 90% by weight or less based on the total weight of the rubber composition.
- the other rubber component may be included in an amount of 1 part by weight to 900 parts by weight based on 100 parts by weight of the modified conjugated diene-based polymer.
- the rubber component may be, for example, natural rubber or synthetic rubber, and specific examples include natural rubber (NR) including cis-1,4-polyisoprene; Modified natural rubbers such as epoxidized natural rubber (ENR), deproteinized natural rubber (DPNR), and hydrogenated natural rubber obtained by modifying or refining the general natural rubber; Styrene-butadiene copolymer (SBR), polybutadiene (BR), polyisoprene (IR), butyl rubber (IIR), ethylene-propylene copolymer, polyisobutylene-co-isoprene, neoprene, poly (ethylene-co- Propylene), poly (styrene-co-butadiene), poly (styrene-co-isoprene), poly (styrene-co-isoprene-co-butadiene), poly (isoprene-co-butadiene), poly (ethylene-co-propylene Co-diene),
- the rubber composition may include, for example, 0.1 part by weight to 200 parts by weight, or 10 parts by weight to 120 parts by weight of a filler based on 100 parts by weight of the modified conjugated diene polymer of the present invention.
- the filler may be, for example, a silica-based filler, and specific examples may be wet silica (silicate silicate), dry silica (silicate anhydrous), calcium silicate, aluminum silicate, colloidal silica, and the like.
- the wet silica may be the most compatible of the grip (wet grip).
- the rubber composition may further include a carbon-based filler as needed.
- silica when silica is used as the filler, a silane coupling agent for improving reinforcement and low heat generation may be used together.
- the silane coupling agent may include bis (3-triethoxysilylpropyl) tetrasulfide.
- the compounding amount of the silane coupling agent is conventional.
- the silane coupling agent may be used in an amount of 1 part by weight to 20 parts by weight, or 5 parts by weight to 15 parts by weight with respect to 100 parts by weight of silica, and the effect as a coupling agent is within this range. While sufficiently exhibiting, there is an effect of preventing gelation of the rubber component.
- the rubber composition according to an embodiment of the present invention may be sulfur crosslinkable, and may further include a vulcanizing agent.
- the vulcanizing agent may be specifically sulfur powder, and may be included in an amount of 0.1 parts by weight to 10 parts by weight with respect to 100 parts by weight of the rubber component, while ensuring the required elastic modulus and strength of the vulcanized rubber composition within this range and at the same time low fuel efficiency. Excellent effect.
- the rubber composition according to an embodiment of the present invention in addition to the above components, various additives commonly used in the rubber industry, specifically, vulcanization accelerators, process oils, antioxidants, plasticizers, anti-aging agents, anti-scorch agents, and zinc (zinc) white), stearic acid, a thermosetting resin, or a thermoplastic resin.
- the vulcanization accelerator is, for example, a thiazole-based compound such as M (2-mercaptobenzothiazole), DM (dibenzothiazyl disulfide), CZ (N-cyclohexyl-2-benzothiazylsulfenamide), or DPG.
- a thiazole-based compound such as M (2-mercaptobenzothiazole), DM (dibenzothiazyl disulfide), CZ (N-cyclohexyl-2-benzothiazylsulfenamide), or DPG.
- Guanidine-based compounds such as (diphenylguanidine) may be used, and may be included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the rubber component.
- the process oil acts as a softener in the rubber composition, and may be, for example, a paraffinic, naphthenic, or aromatic compound, and when considering the tensile strength and abrasion resistance, when the aromatic process oil, hysteresis loss and low temperature characteristics are considered.
- Naphthenic or paraffinic process oils may be used.
- the process oil may be included in an amount of 100 parts by weight or less based on 100 parts by weight of the rubber component, and there is an effect of preventing a decrease in tensile strength and low heat generation (low fuel efficiency) of the vulcanized rubber within this range.
- the antioxidant is, for example, 2,6-di-t-butylparacresol, dibutylhydroxytoluenyl, 2,6-bis ((dodecylthio) methyl) -4-nonylphenol (2,6-bis ( (dodecylthio) methyl) -4-nonylphenol) or 2-methyl-4,6-bis ((octylthio) methyl) phenol (2-methyl-4,6-bis ((octylthio) methyl) phenol), 0.1 parts by weight to 6 parts by weight with respect to 100 parts by weight of the rubber component can be used.
- the anti-aging agent is for example N-isopropyl-N'-phenyl-p-phenylenediamine, N- (1,3-dimethylbutyl) -N'-phenyl-p-phenylenediamine, 6-ethoxy-2 , 2,4-trimethyl-1,2-dihydroquinoline, or a high temperature condensate of diphenylamine and acetone, and the like, and may be used in an amount of 0.1 to 6 parts by weight based on 100 parts by weight of the rubber component.
- the rubber composition according to an embodiment of the present invention may be obtained by kneading using a kneading machine such as a Banbury mixer, a roll, an internal mixer, etc. by the compounding formulation, and has low heat resistance and abrasion resistance by a vulcanization process after molding. This excellent rubber composition can be obtained.
- a kneading machine such as a Banbury mixer, a roll, an internal mixer, etc.
- the rubber composition may be used for tire members such as tire treads, under treads, sidewalls, carcass coated rubbers, belt coated rubbers, bead fillers, pancreapers, or bead coated rubbers, dustproof rubbers, belt conveyors, hoses, and the like. It may be useful for the production of various industrial rubber products.
- the present invention provides a tire manufactured using the rubber composition.
- the tire may include a tire or a tire tread.
- a styrene solution containing 60% by weight of styrene in n-hexane and 1.60 kg / h of 1,3-butadiene in n-hexane were added.
- 1,3-butadiene solution in which 1,3-butadiene was dissolved in 60% by weight in n-hexane was injected into the second reactor at a rate of 0.74 kg / h.
- the temperature of the second reactor was maintained at 65 °C, when the polymerization conversion rate was 95% or more, the polymer was transferred from the second reactor to the third reactor through a transfer pipe.
- N, N-diethyl-3- (trimethoxysilyl) propan-1-amine (N, N-Diethyl-3- (trimethoxysilyl) propan-1) as a modifier -amine) was added to the third reactor at a rate of 55 g / h.
- the temperature of the third reactor was maintained at 65 ° C.
- IR1520 BASF, Inc.
- BASF, Inc. IR1520 solution dissolved at 30% by weight as an antioxidant in the polymerization solution discharged from the third reactor was injected and stirred at a rate of 167 g / h.
- the resulting polymer was placed in hot water heated with steam and stirred to remove the solvent to prepare a modified conjugated diene polymer.
- a styrene solution containing 60% by weight of styrene in n-hexane and 1.60 kg / h of 1,3-butadiene in n-hexane were added.
- the dissolved n-butyllithium solution was injected at a rate of 59.0 g / h At this time, the temperature of the first reactor was maintained at 55 ° C., and when the polymerization conversion rate reached 30%, The polymer was transferred from the reactor to the second reactor.
- 1,3-butadiene solution in which 1,3-butadiene was dissolved in 60% by weight in n-hexane was injected into the second reactor at a rate of 0.74 kg / h.
- the temperature of the second reactor was maintained at 65 °C, when the polymerization conversion rate was 95% or more, the polymer was transferred from the second reactor to the third reactor through a transfer pipe.
- the polymer was transferred from the second reactor to the third reactor, and a solution containing N, N-diethyl-3- (trimethoxysilyl) propan-1-amine dissolved at 20% by weight as a modifier was 55 g / h. To a third reactor. The temperature of the third reactor was maintained at 65 ° C.
- IR1520 BASF, Inc.
- BASF, Inc. IR1520 solution dissolved at 30% by weight as an antioxidant in the polymerization solution discharged from the third reactor was injected and stirred at a rate of 167 g / h.
- the resulting polymer was placed in hot water heated with steam and stirred to remove the solvent to prepare a modified conjugated diene polymer.
- a styrene solution containing 60% by weight of styrene in n-hexane and 1.60 kg / h of 1,3-butadiene in n-hexane were added.
- the dissolved n-butyllithium solution was injected at a rate of 59.0 g / h At this time, the temperature of the first reactor was maintained at 60 ° C., and when the polymerization conversion rate reached 30%, The polymer was transferred from the reactor to the second reactor.
- 1,3-butadiene solution in which 1,3-butadiene was dissolved in 60% by weight in n-hexane was injected into the second reactor at a rate of 0.74 kg / h.
- the temperature of the second reactor was maintained at 65 °C, and when the polymerization conversion rate was 95% or more, the polymer was transferred from the second reactor to the third reactor through a transfer pipe.
- the polymer was transferred from the second reactor to the third reactor, and a solution containing N, N-diethyl-3- (trimethoxysilyl) propan-1-amine dissolved at 20% by weight as a modifier was 55 g / h. To a third reactor. The temperature of the third reactor was maintained at 65 ° C.
- IR1520 BASF, Inc.
- BASF, Inc. IR1520 solution dissolved at 30 wt% as an antioxidant in the polymerization solution discharged from the third reactor was injected and stirred at a rate of 167 g / h.
- the resulting polymer was placed in hot water heated with steam and stirred to remove the solvent to prepare a modified conjugated diene polymer.
- a styrene solution of 60% by weight of styrene dissolved in n-hexane and 1.60 kg / h of 1,3-butadiene in n-hexane were added.
- the dissolved n-butyllithium solution was injected at a rate of 59.0 g / h, wherein the temperature of the first reactor was maintained at 50 ° C., and when the polymerization conversion was 30%, through the transfer pipe, the first reactor The polymer was transferred from the reactor to the second reactor.
- 1,3-butadiene solution in which 1,3-butadiene was dissolved in 60% by weight of n-hexane was injected into the second reactor at a rate of 0.75 kg / h.
- the temperature of the second reactor was maintained at 65 °C, when the polymerization conversion rate was 95% or more, the polymer was transferred to the Blend Tank from the second reactor through the transfer pipe.
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 11 except that the polymerization was carried out while maintaining the temperature at 60 ° C.
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 14 except that the polymerization was carried out while maintaining the temperature at 60 ° C.
- the second reactor in the first reactor is transferred through a transfer pipe.
- Example 1 except that the polymerization was transferred to the reactor, and the polymerization was carried out by continuously injecting a solution containing 2% by weight of tetrachlorosilane in n-hexane as a modifier in a third reactor at a rate of 40 g / h. In the same manner as in the modified conjugated diene polymer was prepared.
- the reaction temperature is maintained at 70 ° C. in the first reactor, 80 ° C. in the second reactor, and 80 ° C. in the third reactor, and when the polymerization conversion rate is 70% in the first reactor, A modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that the polymerization product was transferred to the second reactor and polymerized.
- the second reactor in the first reactor is transferred through the transfer pipe.
- Example 4 except that the polymerization was transferred to the reactor, and the polymerization was performed by continuously injecting a solution of tetrachlorosilane in 2 wt% of n-hexane as a modifier in a third reactor at a rate of 40 g / h. In the same manner as in the modified conjugated diene polymer was prepared.
- the reaction temperature is maintained at 75 ° C. in the first reactor, 80 ° C. in the second reactor, and 80 ° C. in the third reactor, and when the polymerization conversion rate is 70% in the first reactor, A modified conjugated diene-based polymer was prepared in the same manner as in Example 4 except that the polymerization product was transferred to the second reactor and polymerized.
- the reaction temperature is maintained at 80 ° C. in the first reactor, 85 ° C. in the second reactor, and 85 ° C. in the third reactor, and when the polymerization conversion rate is 70% in the first reactor,
- the above example was carried out except that the polymerization product was transferred to the second reactor, and the polymerization was performed by continuously injecting a solution of tetrachlorosilane in 2 wt% of n-hexane as a modifier in the third reactor at a rate of 40 g / h.
- a modified conjugated diene-based polymer was prepared.
- the reaction temperature is maintained at 80 ° C. in the first reactor, 85 ° C. in the second reactor, and 85 ° C. in the third reactor, and when the polymerization conversion rate is 70% in the first reactor, A modified conjugated diene-based polymer was prepared in the same manner as in Example 7, except that the polymerization product was transferred to the second reactor and polymerized.
- styrene unit (SM) and vinyl (Vinyl) content in each polymer was measured and analyzed using Varian VNMRS 500 MHz NMR.
- the weight average molecular weight (Mw) and the number average molecular weight (Mn) were measured by GPC (Gel permeation Chromatography) analysis to obtain a molecular weight distribution curve.
- molecular weight distribution (PDI, MWD, Mw / Mn) was calculated and obtained from each said measured molecular weight.
- the GPC uses a combination of two PLgel Olexis (Polymer Laboratories) columns and one PLgel mixed-C (Polymer Laboratories) columns and the GPC standard material is PS (polystyrene) when calculating the molecular weight. It was carried out using.
- GPC measurement solvent was prepared by mixing 2% by weight of an amine compound with tetrahydrofuran. At this time, the obtained molecular weight distribution curve is shown in Figs.
- the Mooney viscosity (MV, (ML1 + 4, @ 100 °C) MU) was measured using a Rotor Speed 2 ⁇ 0.02 rpm, Large Rotor at 100 °C using MV-2000 (ALPHA Technologies) Samples were allowed to stand at room temperature (23 ⁇ 3 ° C.) for at least 30 minutes, and then collected 27 ⁇ 3 g, filled into the die cavity, and platen operated for 4 minutes.
- the Si content was measured using an inductively coupled plasma luminescence analyzer (ICP-OES; Optima 7300DV) for ICP analysis.
- ICP-OES inductively coupled plasma luminescence analyzer
- about 0.7 g of the sample was placed in a platinum crucible, about 1 mL of concentrated sulfuric acid (98 wt%, Electronic grade) was heated at 300 ° C. for 3 hours, and the sample was After the conversation in the electric furnace (Thermo Scientific, Lindberg Blue M) in the program of steps 1 to 3,
- step 1 initial temp 0 °C, rate (temp / hr) 180 °C / hr, temp (holdtime) 180 °C (1hr)
- step 2 initial temp 180 °C, rate (temp / hr) 85 °C / hr, temp (holdtime) 370 °C (2hr)
- step 3 initial temp 370 °C, rate (temp / hr) 47 °C / hr, temp (holdtime) 510 °C (3hr)
- PA molar ratio of polymerization initiator (act.Li) and polar additive
- Modifier A N, N-diethyl-3- (trimethoxysilyl) propan-1-amine
- Modifier B 3,3 '-(1,1,3,3-tetramethoxydisiloxane-1,3-diyl) bis (N, N-diethylpropan-1-amine)
- Modifier C 8,8-dibutyl-3,13-dimethoxy-3,13-dimethyl-2,14-dioxa-7,9-thia-3,13-disila-8-stanpentadecane
- Modifier D 3- (1H-imidazol-1-yl) -N, N-bis (3- (triethoxysilyl) propyl) propan-1-amine
- the modified conjugated diene-based polymer of Examples 1 to 13 has a unimodal form of the molecular weight distribution curve by gel permeation chromatography (See FIGS. 1 and 2) Both PDI was less than 1.7, and it was confirmed that the Si content was 100 ppm or more.
- the modified or unmodified conjugated diene-based polymers of Comparative Examples 1 to 7 all had a PDI of more than 1.7.
- the modified conjugated diene-based polymer of Comparative Example 5 had a molecular weight distribution curve by gel permeation chromatography. Modal (bimodal) form is shown (see Figure 3).
- Each modified or unmodified conjugated diene-based polymer of Examples and Comparative Examples was blended under the blending conditions shown in Table 3 below as a raw material rubber.
- the raw materials in Table 3 are each parts by weight based on 100 parts by weight of the raw rubber.
- the rubber specimen is kneaded through the first stage kneading and the second stage kneading.
- the raw rubber, silica (filler), organosilane coupling agent, process oil, galvanizing agent, stearic acid, antioxidant, antioxidant and wax were kneaded using a half-variety mixer attached with a temperature controller.
- the initial temperature of the kneader was controlled at 70 ° C., and the primary compound was obtained at the discharge temperature of 145 ° C. to 155 ° C. after the completion of the mixing.
- the primary compound, sulfur, a rubber accelerator, and a vulcanization accelerator were added to the kneader, and it mixed at the temperature of 100 degrees C or less, and obtained the secondary compound. Thereafter, rubber specimens were prepared through a curing process at 160 ° C. for 20 minutes.
- Tensile properties were prepared in accordance with the tensile test method of ASTM 412 and measured the tensile strength at the cutting of the specimen and the tensile stress (300% modulus) at 300% elongation. Specifically, the tensile properties were measured at a rate of 50 cm / min at room temperature using a Universal Test Machin 4204 (Instron) tensile tester.
- Example 11 and Comparative Example 2 were expressed by the exponential value of the result of Comparative Example 1 to 100, Example 4 to Example 6, Example 12, Comparative Example
- Each result of 4 and Comparative Example 5 is represented by the exponential index of the result of Comparative Example 3 to 100
- each result of Examples 7 to 10, Example 13 and Comparative Example 7 is the result of Comparative Example 6
- the value was expressed as 100 and indexed.
- Viscoelastic properties were determined by measuring the viscoelastic behavior for dynamic deformation at 10 Hz frequency and each measurement temperature (-60 °C ⁇ 60 °C) in the film tension mode using a dynamic mechanical analyzer (GABO).
- GBO dynamic mechanical analyzer
- Example 11 and Comparative Example 2 were expressed by the exponential value of the result of Comparative Example 1 to 100, Example 4 to Example 6, Example 12, Comparative Example
- Each result of 4 and Comparative Example 5 is represented by the exponential index of the result of Comparative Example 3 to 100
- each result of Examples 7 to 10, Example 13 and Comparative Example 7 is the result of Comparative Example 6
- the value was expressed as 100 and indexed.
- each secondary blend was left at room temperature (23 ⁇ 3 °C) for 30 minutes or more 27 ⁇ 3 g was taken and filled into the die cavity and platen operated for 4 minutes.
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Abstract
Description
구분 | 실시예 | |||||||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | ||
반응조건 | 반응기 개수 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 |
극성첨가제 | DTP | DTP | DTP | DTP | DTP | DTP | DTP | DTP | DTP | TMEDA | DTP | DTP | DTP | |
변성제 | A | B | C | A | B | C | A | B | C | A | D | D | D | |
PI:PA | 1:0.9 | 1:0.6 | 1:0.3 | 1:0.4 | 1:0.9 | 1:0.6 | 1:0.3 | |||||||
M:PI | 1:1 | |||||||||||||
제1 반응기 온도(℃) | 50 | 50 | 50 | 55 | 55 | 55 | 60 | 60 | 60 | 60 | 50 | 55 | 60 | |
제1 반응기 중합 전환율(%) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | |
NMR(중량%) | SM | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Vinyl | 50 | 50 | 50 | 38 | 38 | 38 | 20 | 20 | 20 | 20 | 50 | 38 | 20 | |
GPC | Mw(X103 g/mol) | 449 | 441 | 440 | 444 | 444 | 445 | 445 | 447 | 446 | 466 | 621 | 622 | 626 |
Mn(X103 g/mol) | 301 | 304 | 304 | 299 | 300 | 300 | 301 | 302 | 300 | 300 | 399 | 398 | 401 | |
PDI | 1.49 | 1.45 | 1.45 | 1.48 | 1.48 | 1.48 | 1.48 | 1.48 | 1.49 | 1.55 | 1.56 | 1.56 | 1.55 | |
무니점도(MV) | 62 | 61 | 61 | 61 | 60 | 60 | 60 | 80 | 59 | 60 | 81 | 81 | 60 | |
Si 함량(ppm) | 130 | 261 | 265 | 128 | 260 | 264 | 131 | 262 | 261 | 130 | 268 | 266 | 269 |
구분 | 비교예 | |||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | ||
반응조건 | 반응기 개수 | 3 | 3 | 3 | 3 | 배치 | 2 | 2 |
극성첨가제 | DTP | DTP | DTP | DTP | DTP | DTP | DTP | |
변성제(또는 커플링제) | E | A | E | A | A | E | A | |
PI:PA(몰비) | 1:0.9 | 1:0.6 | 1:0.6 | 1:0.3 | ||||
M:PI(몰비) | 0:1:1 | 1:1 | 0.1:1 | 1:1 | 1:1 | 0.1:1 | 1:1 | |
제1 반응기 온도(℃) | 70 | 70 | 75 | 75 | 50->75 | 80 | 80 | |
제1 반응기 중합 전환율(%) | 70 | 70 | 70 | 70 | - | 70 | 70 | |
NMR(중량%) | SM | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Vinyl | 50 | 50 | 38 | 38 | 38 | 20 | 20 | |
GPC | Mw(X103 g/mol) | 620 | 603 | 615 | 600 | 532 | 617 | 599 |
Mn(X103 g/mol) | 304 | 300 | 303 | 300 | 291 | 301 | 301 | |
PDI | 2.04 | 2.01 | 2.03 | 2.00 | 1.83 | 2.05 | 1.99 | |
무니점도(MV) | 67 | 67 | 67 | 66 | 73 | 67 | 66 | |
Si 함량(ppm) | 10 | 128 | 11 | 131 | 128 | 10 | 130 |
구분 | 원료 | 함량(중량부) |
제1단 혼련 | 고무 | 100 |
실리카 | 70 | |
커플링제(X50S) | 11.2 | |
공정유 | 37.5 | |
아연화제 | 3 | |
스테아르산 | 2 | |
산화 방지제 | 2 | |
노화 방지제 | 2 | |
왁스 | 1 | |
제2단 혼련 | 황 | 1.5 |
고무촉진제 | 1.75 | |
가황촉진제 | 2 |
구분 | 실시예 | 비교예 | |||||
1 | 2 | 3 | 11 | 1 | 2 | ||
인장특성(Index) | 인장강도(kgf/cm2) | 109 | 111 | 109 | 116 | 100 | 108 |
300% 모듈러스(kgf/cm2) | 115 | 116 | 113 | 121 | 100 | 108 | |
점탄성 특성(Index) | tan δ(at 0℃) | 100 | 103 | 100 | 101 | 100 | 99 |
tan δ(at 60℃) | 119 | 125 | 115 | 116 | 100 | 107 |
구분 | 실시예 | 비교예 | ||||||
4 | 5 | 6 | 12 | 3 | 4 | 5 | ||
인장특성(Index) | 인장강도(kgf/cm2) | 110 | 111 | 108 | 116 | 100 | 107 | 108 |
300% 모듈러스(kgf/cm2) | 114 | 114 | 113 | 119 | 100 | 108 | 112 | |
점탄성 특성(Index) | tan δ(at 0℃) | 101 | 102 | 100 | 101 | 100 | 100 | 99 |
tan δ(at 60℃) | 121 | 125 | 118 | 118 | 100 | 108 | 113 | |
가공성 특성 | 69 | 69 | 69 | - | 65 | 71 | 75 |
구분 | 실시예 | 비교예 | ||||||
7 | 8 | 9 | 10 | 13 | 6 | 7 | ||
인장특성(Index) | 인장강도(kgf/cm2) | 109 | 111 | 107 | 109 | 118 | 100 | 106 |
300% 모듈러스(kgf/cm2) | 109 | 110 | 107 | 110 | 121 | 100 | 107 | |
점탄성 특성(Index) | tan δ(at 0℃) | 101 | 105 | 100 | 100 | 101 | 100 | 99 |
tan δ(at 60℃) | 116 | 122 | 113 | 116 | 113 | 100 | 107 |
Claims (10)
- 겔 투과 크로마토그래피(GPC, Gel permeation chromatography)에 의한 분자량 분포 곡선이 유니모달(unimodal) 형태를 갖고,분자량 분포(PDI; MWD)가 1.7 미만이며,Si 함량이 중량을 기준으로 100 ppm 이상이고,방향족 비닐 단량체 유래 반복 단위를 0 중량% 초과 내지 15 중량% 미만으로 포함하는 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 변성 공액디엔계 중합체는 공액디엔계 단량체 유래 반복 단위 및 변성제 유래 작용기를 포함하는 것인 변성 공액디엔계 중합체.
- 제2항에 있어서,상기 변성제는 실리카 친화성 변성제인 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 변성 공액디엔계 중합체는 수평균 분자량(Mn)이 1,000 g/mol 내지 2,000,000 g/mol이고, 중량평균 분자량(Mw)이 1,000 g/mol 내지 3,000,000 g/mol인 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 분자량 분포(PDI; MWD)는 1.0 이상 1.7 미만인 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 변성 공액디엔계 중합체는 100℃에서의 무니점도(Mooney viscosity)가 30 이상인 것인 변성 공액디엔계 중합체.
- 겔 투과 크로마토그래피에 의한 표준 폴리스티렌 환산 분자량에 있어서 분자량 100,000 g/mol 이상의 중합체 성분이 유니모달이고,분자량 분포(PDI; MWD)가 2.0 이하이고,수평균 분자량(Mn)이 250,000 g/mol 내지 700,000 g/mol이고,부타디엔 단위의 비닐 함유량이 20 몰% 내지 80 몰% 이하이고,Si 함량이 중량을 기준으로 100 ppm 이상이고,관능기를 갖는 중합체 성분의 함유량이 50 중량% 이상이며,방향족 비닐 단량체 유래 반복 단위를 0 중량% 초과 내지 15 중량% 미만으로 포함하는 변성 공액디엔계 중합체.
- 제1항 또는 제7항에 따른 변성 공액디엔계 중합체 및 충진제를 포함하는 고무 조성물.
- 제8항에 있어서,상기 고무 조성물은 상기 변성 공액디엔계 중합체 100 중량부에 대하여, 0.1 중량부 내지 200 중량부의 충진제를 포함하는 것인 고무 조성물.
- 제8항에 있어서,상기 충진제는 실리카계 충진제 또는 카본블랙계 충진제인 고무 조성물.
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BR112019008513-0A BR112019008513B1 (pt) | 2017-01-03 | 2017-12-08 | Polímero com base em dieno conjugado modificado e composição de borracha que inclui o mesmo |
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JP7225100B2 (ja) | 2023-02-20 |
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US20190233547A1 (en) | 2019-08-01 |
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US11254755B2 (en) | 2022-02-22 |
EP3508508A1 (en) | 2019-07-10 |
CN109923136A (zh) | 2019-06-21 |
KR101865796B1 (ko) | 2018-06-11 |
RU2019112745A (ru) | 2021-02-05 |
BR112019008513A2 (pt) | 2019-07-09 |
EP3508508B1 (en) | 2020-07-29 |
RU2019112745A3 (ko) | 2021-02-08 |
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BR112019008513B1 (pt) | 2023-03-21 |
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