WO2017078408A1 - 유기 리튬 화합물, 이를 이용한 변성 공액디엔계 중합체 제조 방법 및 변성 공액디엔계 중합체 - Google Patents
유기 리튬 화합물, 이를 이용한 변성 공액디엔계 중합체 제조 방법 및 변성 공액디엔계 중합체 Download PDFInfo
- Publication number
- WO2017078408A1 WO2017078408A1 PCT/KR2016/012537 KR2016012537W WO2017078408A1 WO 2017078408 A1 WO2017078408 A1 WO 2017078408A1 KR 2016012537 W KR2016012537 W KR 2016012537W WO 2017078408 A1 WO2017078408 A1 WO 2017078408A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conjugated diene
- modified conjugated
- based polymer
- formula
- polymer
- Prior art date
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- 229920000642 polymer Polymers 0.000 title claims abstract description 86
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- 238000000034 method Methods 0.000 claims abstract description 24
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- 125000004432 carbon atom Chemical group C* 0.000 claims description 27
- 150000002430 hydrocarbons Chemical group 0.000 claims description 23
- 229920002554 vinyl polymer Polymers 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
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- 239000000945 filler Substances 0.000 claims description 18
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- 238000006116 polymerization reaction Methods 0.000 claims description 16
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 239000003505 polymerization initiator Substances 0.000 claims description 12
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- 230000000996 additive effect Effects 0.000 claims description 8
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- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 6
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- 150000002642 lithium compounds Chemical class 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 229920001519 homopolymer Polymers 0.000 claims description 5
- SDJHPPZKZZWAKF-UHFFFAOYSA-N 2,3-dimethylbuta-1,3-diene Chemical compound CC(=C)C(C)=C SDJHPPZKZZWAKF-UHFFFAOYSA-N 0.000 claims description 4
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 4
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 4
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- NUNQKTCKURIZQX-UHFFFAOYSA-N 2-(2-ethoxyethoxy)-2-methylpropane Chemical compound CCOCCOC(C)(C)C NUNQKTCKURIZQX-UHFFFAOYSA-N 0.000 claims description 2
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- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 claims 1
- IMJGQTCMUZMLRZ-UHFFFAOYSA-N buta-1,3-dien-2-ylbenzene Chemical compound C=CC(=C)C1=CC=CC=C1 IMJGQTCMUZMLRZ-UHFFFAOYSA-N 0.000 claims 1
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
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- 239000004945 silicone rubber Substances 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- 238000004448 titration Methods 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
- 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
- 238000005303 weighing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/22—Incorporating nitrogen atoms into the molecule
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F1/00—Compounds containing elements of Groups 1 or 11 of the Periodic Table
- C07F1/02—Lithium compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/01—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to acyclic carbon atoms
- C07C211/02—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
- C07C211/09—Diamines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/30—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
- C08C19/42—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
- 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
-
- 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
- C08F2/04—Polymerisation in solution
-
- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
- C08F210/18—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers with non-conjugated dienes, e.g. EPT rubbers
-
- 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
- C08F212/00—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
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
-
- 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
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- 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
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
-
- 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
-
- 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
- C08L9/06—Copolymers with styrene
-
- 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 an organic lithium compound, a method for producing a modified conjugated diene-based polymer using the same, and a modified conjugated diene-based polymer.
- rubber which is a material of a tire tread, which has good workability and excellent wet road resistance and mechanical strength, and low rolling resistance.
- the present invention has been made to solve the problems of the prior art, and an object thereof is to provide an organolithium compound having a novel structure.
- Another object of the present invention is to provide a modified conjugated diene-based polymer comprising the functional group derived from the organolithium compound.
- Another object of the present invention is to provide a method for producing a modified conjugated diene polymer using the organolithium compound as a polymerization initiator.
- another object of the present invention is to provide a modified conjugated diene-based polymer rubber composition comprising the modified conjugated diene-based polymer. Furthermore, another object of the present invention is to provide a tire comprising the rubber composition.
- the present invention provides an organolithium compound represented by the following formula (1).
- R 1 , R 2 and R 5 are each independently a monovalent hydrocarbon group having 1 to 10 carbon atoms
- R 3 and R 4 are each independently a divalent hydrocarbon group having 1 to 10 carbon atoms
- n is an integer of 1-5.
- the present invention provides a modified conjugated diene-based polymer represented by the following formula (3).
- R 1 , R 2 and R 5 are each independently a monovalent hydrocarbon group having 1 to 10 carbon atoms
- R 3 and R 4 are each independently a divalent hydrocarbon group having 1 to 10 carbon atoms
- n is an integer from 1 to 5
- P is a conjugated diene polymer chain.
- the present invention provides a method for producing a modified conjugated diene polymer comprising the step of polymerizing a conjugated diene monomer or a conjugated diene monomer and an aromatic vinyl monomer in the presence of an organolithium compound represented by the formula (1) in a hydrocarbon solvent. to provide.
- the present invention provides a rubber composition comprising the modified conjugated diene-based polymer and a tire including the rubber composition.
- the organolithium compound represented by Formula 1 according to the present invention may be used as a polymerization initiator of a conjugated diene-based polymer to provide functional functional groups to the conjugated diene-based polymer chain.
- the modified conjugated diene-based polymer according to the present invention can be excellent in affinity with the filler, in particular, silica-based filler by the functional group derived from the organolithium compound represented by the formula (1) in the polymer chain.
- the modified conjugated diene-based polymer may be easily prepared by using the organolithium compound represented by the formula (1).
- the rubber composition according to the present invention may be excellent in workability by including a modified conjugated diene-based polymer having excellent affinity with the filler, and as a result, molded articles, such as tires, prepared from the rubber composition may have tensile strength, wear resistance, and low fuel consumption.
- the rolling resistance may be low while the castle and wet road resistance are excellent.
- the present invention provides an organolithium compound of a novel structure that can be used as a polymerization initiator in the preparation of a polymer containing a conjugated diene monomer-derived unit.
- the organolithium compound according to an embodiment of the present invention is characterized in that represented by the following formula (1).
- R 1 , R 2 and R 5 are each independently a monovalent hydrocarbon group having 1 to 10 carbon atoms
- R 3 and R 4 are each independently a divalent hydrocarbon group having 1 to 10 carbon atoms
- n is an integer of 1-5.
- R 1 , R 2, and R 5 are independently a monovalent hydrocarbon having 1 to 10 carbon atoms, and specifically, R 1 , R 2, and R 5 are independently alkyl groups having 1 to 10 carbon atoms. It may be selected from the group consisting of a cycloalkyl group having 3 to 10 carbon atoms and an arylalkyl group having 6 to 10 carbon atoms.
- R 3 and R 4 are independently of each other a divalent hydrocarbon group having 1 to 10 carbon atoms, specifically, R 3 and R 4 are independently of each other methylene group, ethylene group or propylene group Alkylene groups having 1 to 10 carbon atoms; Or an arylene group having 6 to 10 carbon atoms such as a phenylene group.
- R 1 , R 2 and R 5 are each independently an alkyl group having 1 to 6 carbon atoms
- R 3 and R 4 are independently an alkylene group having 1 to 6 carbon atoms
- n May be an integer of 1 to 3. More specifically, Formula 1 may be represented by the following formula (2).
- the organolithium compound according to an embodiment of the present invention may be used as a polymerization initiator in the preparation of the polymer.
- the organolithium compound may be used as a polymerization initiator in the preparation of the polymer to introduce functional functional groups into the polymer chain, and may serve to modify the structure, properties, and physical properties of the polymer.
- the polymer may be a polymer including a conjugated diene-based monomer derived unit. That is, the organolithium compound may be a polymerization initiator for a polymer including a conjugated diene monomer-derived unit.
- the present invention provides a modified conjugated diene-based polymer represented by the following formula (3).
- R 1 , R 2 and R 5 are each independently a monovalent hydrocarbon group having 1 to 10 carbon atoms
- R 3 and R 4 are each independently a divalent hydrocarbon group having 1 to 10 carbon atoms
- n is an integer from 1 to 5
- P is a conjugated diene polymer chain.
- Modified conjugated diene-based polymer according to an embodiment of the present invention may be prepared using an organolithium compound represented by the formula (1) through the manufacturing method described below, the functional group derived from the organic lithium compound represented by the formula (1) By including the physical properties can be improved.
- the modified conjugated diene-based polymer represented by Formula 3 may include an amine group derived from the organolithium compound represented by Formula 1, which may be excellent in affinity with a filler such as silica Abrasion resistance, low fuel consumption characteristics and workability of a rubber composition including the modified conjugated diene-based polymer and a molded article such as a tire manufactured therefrom may be improved.
- a filler such as silica Abrasion resistance, low fuel consumption characteristics and workability of a rubber composition including the modified conjugated diene-based polymer and a molded article such as a tire manufactured therefrom may be improved.
- the modified conjugated diene-based polymer represented by Formula 3 may be represented by the following [Formula 4].
- P is a conjugated diene polymer chain.
- the modified conjugated diene-based polymer according to an embodiment of the present invention may be a homopolymer or a copolymer, it may be prepared by the manufacturing method described below.
- the modified conjugated diene-based polymer when it is a homopolymer, it may be a conjugated diene-based monomer homopolymer, and in Chemical Formula 3, P may be a polymer chain derived from a conjugated diene-based monomer.
- P in the formula (3) is an air derived from the conjugated diene monomer and aromatic vinyl monomer It may be a coalescing chain.
- the modified conjugated diene-based polymer is a copolymer, the copolymer may be a random copolymer.
- the conjugated diene-based copolymer chain is 0.0001 parts by weight to 50 parts by weight, specifically 10 parts by weight, based on 100 parts by weight of the sum of the conjugated diene-based monomer derived units and the aromatic vinyl monomer derived units. It may be a polymer chain comprising about 40 parts by weight or 15 to 40 parts by weight.
- the "random copolymer” may indicate that the structural units constituting the copolymer are randomly arranged.
- the modified conjugated diene-based polymer may have a molecular weight distribution (Mw / Mn) of 0.5 to 10, specifically 0.5 to 5, more specifically 1 to 5.
- Mw / Mn molecular weight distribution
- the molecular weight distribution of the modified conjugated diene-based polymer satisfies this range, mixing with inorganic particles is excellent, so that physical properties may be improved, and workability may be greatly improved.
- modified conjugated diene-based polymer may have a vinyl content of 5% by weight or more, specifically 8% by weight to 70% by weight.
- the vinyl content means the content of a monomer having a vinyl group, or the content of 1,2-added modified conjugated diene monomer rather than 1,4-addition based on 100% by weight of the conjugated diene monomer.
- the glass transition temperature of the polymer is increased to not only satisfy the properties required for the tire such as running resistance and braking force when applied to the tire, but also consume fuel. Has the effect of reducing
- the present invention also provides a method for producing a modified conjugated diene-based polymer using an organolithium compound represented by the following formula (1).
- a method for producing the modified conjugated diene-based polymer comprising the step of polymerizing a conjugated diene-based monomer or a conjugated diene-based monomer and an aromatic vinyl-based monomer in the presence of an organolithium compound represented by Formula 1 below in a hydrocarbon solvent: To provide.
- R 1 , R 2 and R 5 are each independently a monovalent hydrocarbon group having 1 to 10 carbon atoms
- R 3 and R 4 are each independently a divalent hydrocarbon group having 1 to 10 carbon atoms
- n is an integer of 1-5.
- organolithium compound represented by Formula 1 may be as described above.
- Step A is a step for preparing an active polymer in which a functional group derived from an organolithium compound represented by Chemical Formula 1 is bonded to at least one end thereof, and conjugated diene monomer or conjugated diene in the presence of the compound represented by Chemical Formula 1 in a hydrocarbon solvent. It may be carried out by polymerizing a monomer and an aromatic vinyl monomer.
- the polymerization of step A may be one using a conjugated diene monomer alone or a conjugated diene monomer and an aromatic vinyl monomer together. That is, the polymer prepared by the above production method according to an embodiment of the present invention may be a conjugated diene monomer homopolymer or a copolymer derived from a conjugated diene monomer and an aromatic vinyl monomer.
- the conjugated diene monomer is not particularly limited, but for example, 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, isoprene and 2-phenyl It may be one or more selected from the group consisting of -1,3-butadiene.
- the conjugated diene monomer may include 60% by weight or more of the unit derived from the conjugated diene monomer in the finally prepared modified conjugated diene polymer. 60 wt% to 90 wt%, more specifically, 60 wt% to 85 wt%.
- the aromatic vinyl monomer is not particularly limited, but for example, styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, 4- (p It may be one or more selected from the group consisting of -methylphenyl) styrene and 1-vinyl-5-hexylnaphthalene.
- the aromatic vinyl monomer may be 40 wt% or less of the aromatic vinyl monomer-derived unit in the finally prepared modified conjugated diene polymer. It may be used in an amount comprised from 10% by weight to 40% by weight, more specifically 15% by weight to 40% by weight.
- 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 organolithium compound may be used in an amount of 0.01 mmol to 10 mmol, 0.05 mmol to 5 mmol, 0.1 mmol to 2 mmol, or 0.1 mmol to 1 mmol, based on 100 g of the total monomers.
- an optimal conjugated diene-based polymer for preparing a modified conjugated diene-based polymer may be made.
- the polymerization of step A may be carried out by further adding a polar additive as needed, the polar additive is 0.001 g to 50 g, 0.001 g to 10 g, 0.005 g to 1 g or based on a total of 100 g of monomers It may be added at 0.005 g to 0.2 g.
- the polar additive may be used in 0.001 g to 10 g, 0.005 g to 1 g, or 0.005 g to 0.2 g based on a total of 1 mmol of the organolithium compound introduced.
- the polar additives include tetrahydrofuran, ditetrahydrofurylpropane, diethyl ether, cycloamal ether, dipropyl ether, ethylene dimethyl ether, ethylene dimethyl ether, diethyl glycol, dimethyl ether, tert-butoxyethoxyethane, bis It may be one or more selected from the group consisting of (3-dimethylaminoethyl) ether, (dimethylaminoethyl) ethyl ether, trimethylamine, triethylamine, tripropylamine and tetramethylethylenediamine.
- the reaction rate can be easily compensated for by forming a random copolymer. Can be induced.
- the polymerization in the polymerization step may be, for example, anionic polymerization, and specifically, the polymerization may be a living anion polymerization in which an active terminal is obtained by a growth reaction by anions.
- the polymerization may be, for example, elevated temperature polymerization or constant temperature polymerization.
- the elevated temperature polymerization refers to a polymerization method including a step of increasing the reaction temperature by adding heat optionally after adding the organolithium compound, and the constant temperature polymerization refers to a polymerization method in which no heat is optionally added after adding the organometallic compound. .
- the polymerization temperature during the polymerization may be, for example, -20 °C to 200 °C, 0 °C to 150 °C or 10 °C to 120 °C.
- the present invention provides a rubber composition comprising the modified conjugated diene-based polymer.
- the rubber composition according to an embodiment of the present invention comprises 100 parts by weight of the modified conjugated diene polymer; And 0.1 part by weight to 150 parts by weight of a filler.
- the rubber composition may be one containing 10 parts by weight to 150 parts by weight, or 50 parts by weight to 100 parts by weight.
- 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 modified conjugated diene copolymer may be included in an amount of 1 part by weight to 900 parts by weight based on 100 parts by weight.
- the rubber component may be natural rubber or synthetic rubber, for example, the rubber component may 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-d
- the filler may be at least one selected from the group consisting of silica-based fillers, carbon black, and mixtures thereof.
- the filler is a silica-based filler, dispersibility is greatly improved, and the hysteresis loss is greatly reduced by bonding the silica particles with the terminal of the modified conjugated diene-based polymer of the present invention.
- a silane coupling agent may be used together to improve reinforcement and low heat generation.
- silane coupling agent examples include bis (3-triethoxysilylpropyl) tetrasulfide, bis (3-triethoxysilylpropyl) trisulfide, bis (3-triethoxysilylpropyl) disulfide, bis (2-triethoxysilylethyl) tetrasulfide, bis (3-trimethoxysilylpropyl) tetrasulfide, bis (2-trimethoxysilylethyl) tetrasulfide, 3-mercaptopropyltrimethoxysilane , 3-mercaptopropyltriethoxysilane, 2-mercaptoethyltrimethoxysilane, 2-mercaptoethyltriethoxysilane, 3-trimethoxysilylpropyl-N, N-dimethylthiocarbamoyl tetrasul Feed, 3-triethoxysilylpropyl-N, N
- the silane coupling agent may be bis (3-triethoxysilylpropyl) polysulfide or 3-trimethoxysilylpropylbenzothiazyl tetrasulfide.
- a modified conjugated diene-based polymer having a functional group having a high affinity with a silica-based filler as an active moiety is used as the rubber component.
- the compounding amount can be reduced than usual.
- the silane coupling agent may be used in an amount of 1 to 20 parts by weight based on 100 parts by weight of the silica-based filler. When used in the above range, the gelation of the rubber component can be prevented while the effect as a coupling agent is sufficiently exhibited. More specifically, the silane coupling agent may be used in 5 parts by weight to 15 parts by weight based on 100 parts by weight of silica.
- the rubber composition according to an embodiment of the present invention may be sulfur crosslinkable, and thus 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 based on 100 parts by weight of the rubber component. When included in the content range, it is possible to ensure the required elastic modulus and strength of the vulcanized rubber composition, and at the same time obtain a low fuel consumption.
- 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, in particular, vulcanization accelerators, process oils, plasticizers, anti-aging agents, anti-scoring agents, zinc white (zinc white) ), Stearic acid, a thermosetting resin, or a thermoplastic resin may be further included.
- the said vulcanization accelerator is not specifically limited, Specifically, M (2-mercapto benzothiazole), DM (dibenzothiazyl disulfide), CZ (N-cyclohexyl-2- benzothiazyl sulfenamide), etc. Thiazole compounds, or guanidine compounds such as DPG (diphenylguanidine) can be used.
- the vulcanization accelerator may be included in an amount of 0.1 parts by weight 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, specifically, may be a paraffinic, naphthenic, or aromatic compound, and more specifically, aromatic process oil, hysteresis loss in consideration of tensile strength and wear resistance. And naphthenic or paraffinic process oils may be used when considering low temperature properties.
- the process oil may be included in an amount of 100 parts by weight or less with respect to 100 parts by weight of the rubber component, when included in the content, it is possible to prevent the degradation of tensile strength, low heat generation (low fuel consumption) of the vulcanized rubber.
- the anti-aging agent specifically N-isopropyl-N'-phenyl-p-phenylenediamine, N- (1,3-dimethylbutyl) -N'-phenyl-p-phenylenediamine, 6- Methoxy-2,2,4-trimethyl-1,2-dihydroquinoline, or a high temperature condensate of diphenylamine and acetone.
- the anti-aging agent may be used in an amount of 0.1 parts by weight 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 can be obtained by kneading using a kneading machine such as a Banbury mixer, a roll, an internal mixer, etc. by the above formulation, and also 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 comprising the rubber composition.
- the tire may include a tire or a tire tread.
- the present invention also relates to a tire or tire tread comprising the modified conjugated diene-based polymer rubber composition.
- the tire or tire tread may be manufactured by using the rubber composition, and thus has excellent advantages such as tensile strength, wear resistance, wet road resistance, and low rolling resistance.
- a styrene-butadiene copolymer was prepared in the same manner as in Example, except that 0.4 mmol of n-butyllithium was used instead of the organolithium compound represented by Chemical Formula 2 as a polymerization initiator.
- MV-2000 manufactured by ALPHA Technologies, Inc. was preheated for 1 minute using two or more specimens weighing 15 g and then measured at 100 ° C. for 4 minutes.
- SM Styrene derived units
- the maximum peak molecular weight (Mp), weight average molecular weight (Mw), and number average molecular weight (Mn) of each copolymer were measured by GPC (Gel Permeation Chromathgraph) analysis under 40 ° C.
- the column was a combination of two PLgel Olexis columns and one PLgel mixed-C column from Polymer Laboratories, and all of the newly replaced columns were mixed bed type columns.
- PS Polystyrene
- the polydispersity index (PDI) was calculated as the ratio (Mw / Mn) of the weight average molecular weight and the number average molecular weight measured by the above method.
- Each rubber composition was prepared through the first stage kneading and the second stage kneading.
- the amount of the material except the modified styrene-butadiene copolymer is shown based on 100 parts by weight of the copolymer.
- 100 parts by weight of each copolymer, 70 parts by weight of silica, and bis (3-triethoxysilylpropyl) tetrasulfate as a silane coupling agent were used at 80 rpm using a short-variety mixer equipped with a temperature controller.
- Tensile properties were prepared by a test specimen (thickness 25 mm, length 80 mm) by the tensile test method of ASTM 412, and the tensile strength at the time of cutting and tensile stress (300% modulus) at 300% elongation of each test piece was measured. . Specifically, Instron's Universal Test Machine 4204 tensile tester was used and measured at a rate of 50 cm / min at room temperature to obtain tensile strength and tensile stress at 300% elongation.
- Viscoelastic properties were used by TA mechanical dynamic analyzer. Tan ⁇ was measured by varying the strain at a frequency of 10 Hz and each measurement temperature (-60 ° C. to 60 ° C.) in the torsion mode. The higher the low temperature 0 [deg.] C. Tan ⁇ , the better the wet road surface resistance. The lower the high temperature 60 [deg.] C. Tan ⁇ , the lower the hysteresis loss.
- the tensile and viscoelastic properties of the rubber composition comprising the modified styrene-butadiene copolymer of the example prepared by using the organolithium compound according to the example of the present invention as a polymerization initiator are styrene of the comparative example. It was confirmed that the rubber composition containing butadiene copolymer is superior to the composition.
- a styrene-butadiene copolymer of Comparative Example in which a rubber composition comprising a modified styrene-butadiene copolymer of an example prepared using an organolithium compound according to an embodiment of the present invention as a polymerization initiator is prepared using a general polymerization initiator. It was confirmed that the Tan ⁇ value at 0 ° C. increased and the Tan ⁇ value at 60 ° C. decreased compared with the rubber composition including the coalescence.
- modified styrene-butadiene copolymer prepared by using the organolithium compound according to one embodiment of the present invention as a polymerization initiator has excellent wet traction and rolling resistance (RR) characteristics and high fuel efficiency. The results indicate that it can.
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Abstract
Description
구분 | 실시예 | 비교예 | |
무니점도 (MV) | 88 | 77 | |
NMR | 스티렌 | 27 | 27 |
비닐 | 42 | 43 | |
GPC(x104) | Mp | 28.2 | 24.9 |
Mn | 25.3 | 24.0 | |
Mw | 29.1 | 25.7 | |
PDI | 1.15 | 1.07 |
시료 | 실시예 | 비교예 |
300% 모듈러스(Kgf/cm2) | 132 | 130 |
인장강도(Kgf/cm2) | 201 | 197 |
Tan at 0℃ | 0.967 | 0.922 |
Tan at 60℃ | 0.101 | 0.120 |
Claims (20)
- 청구항 1에 있어서,상기 화학식 1에서,R1, R2 및 R5는 서로 독립적으로 탄소수 1 내지 6의 알킬기이고,R3 및 R4는 서로 독립적으로 탄소수 1 내지 6의 알킬렌기이며,n은 1 내지 3의 정수이다.
- 청구항 1에 있어서,상기 유기 리튬 화합물은 공액디엔계 단량체 유래단위를 포함하는 중합체용 중합 개시제인 것인 유기 리튬 화합물.
- 청구항 5에 있어서,상기 변성 공액디엔계 중합체는 공액디엔계 단량체 단독 중합체 또는 공액디엔계 단량체와 방향족 비닐계 단량체의 공중합체인 것인 변성 공액디엔계 중합체.
- 청구항 5에 있어서,상기 변성 공액디엔계 중합체는 0.5 내지 10의 분자량 분포(Mw/Mn)를 가지는 것인 변성 공액디엔계 중합체.
- 청구항 5에 있어서,상기 변성 공액디엔계 중합체는, 비닐 함량이 5 중량% 이상인 것인 변성 공액디엔계 중합체.
- 청구항 10에 있어서,상기 유기 리튬 화합물은 단량체 총 100 g을 기준으로 0.01 mmol 내지 10 mmol로 사용되는 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 10에 있어서,상기 공액디엔계 단량체는 1,3-부타디엔, 2,3-디메틸-1,3-부타디엔, 피페릴렌, 3-부틸-1,3-옥타디엔, 이소프렌 및 2-페닐-1,3-부타디엔으로 이루어진 군으로부터 선택된 1종 이상인 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 10에 있어서,상기 방향족 비닐계 단량체는 스티렌, α-메틸스티렌, 3-메틸스티렌, 4-메틸스티렌, 4-프로필스티렌, 1-비닐나프탈렌, 4-사이클로헥실스티렌, 4-(p-메틸페닐)스티렌 및 1-비닐-5-헥실나프탈렌으로 이루어진 군으로부터 선택된 1종 이상인 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 10에 있어서,상기 중합은 극성 첨가제를 사용하여 수행하는 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 15에 있어서,상기 극성 첨가제는 상기 유기 리튬 화합물 총 1 mmol을 기준으로 0.001 g 내지 10 g으로 투입되는 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 15에 있어서,상기 극성 첨가제는 테트라히드로퓨란, 디테트라히드로프릴프로판, 디에틸에테르, 시클로아밀에테르, 디프로필에테르, 에틸렌디메틸에테르, 에틸렌디메틸에테르, 디에틸렌글리콜, 디메틸에테르, 3차 부톡시에톡시에탄 비스(2-디메틸아미노에틸)에테르, (디메틸아미노에틸) 에틸에테르, 트리메틸아민, 트리에틸아민, 트리프로필아민, 및 테트라메틸에틸렌디아민으로 이루어진 군으로부터 선택된 1종 이상인 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 5에 기재된 변성 공액디엔계 중합체 100 중량부; 및충진제 0.1 중량부 내지 150 중량부를 포함하는 고무 조성물.
- 청구항 18에 있어서,상기 충진제는 실리카계 충진제, 카본 블랙계 충진제 및 이들의 혼합물로 이루어진 군으로부터 선택된 1종 이상인 것인 고무 조성물.
- 청구항 19에 기재된 고무 조성물을 포함하는 타이어.
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JP2017559845A JP6564882B2 (ja) | 2015-11-02 | 2016-11-02 | 有機リチウム化合物、これを利用した変性共役ジエン系重合体の製造方法及び変性共役ジエン系重合体 |
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