WO2016085285A1 - 변성 스티렌-부타디엔 공중합체, 이의 제조방법 및 이를 포함하는 고무 조성물 - Google Patents
변성 스티렌-부타디엔 공중합체, 이의 제조방법 및 이를 포함하는 고무 조성물 Download PDFInfo
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- WO2016085285A1 WO2016085285A1 PCT/KR2015/012821 KR2015012821W WO2016085285A1 WO 2016085285 A1 WO2016085285 A1 WO 2016085285A1 KR 2015012821 W KR2015012821 W KR 2015012821W WO 2016085285 A1 WO2016085285 A1 WO 2016085285A1
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- carbon atoms
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- amino
- propanoate
- triethoxysilyl
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- 0 *N(*C(O*)=O)*S(*)* Chemical compound *N(*C(O*)=O)*S(*)* 0.000 description 1
- FLCLPJGGCTUSFD-UHFFFAOYSA-O CCO[SH+](CN(CCC(OCCOC)=O)C1CCCCC1)(OCC)OCC Chemical compound CCO[SH+](CN(CCC(OCCOC)=O)C1CCCCC1)(OCC)OCC FLCLPJGGCTUSFD-UHFFFAOYSA-O 0.000 description 1
- HLYDCKLEBPEMQD-UHFFFAOYSA-N CCO[Si](CN(CCC(OCCN(C)C)=O)C1CCCCC1)(OCC)OCC Chemical compound CCO[Si](CN(CCC(OCCN(C)C)=O)C1CCCCC1)(OCC)OCC HLYDCKLEBPEMQD-UHFFFAOYSA-N 0.000 description 1
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- 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
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- 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
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- 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
- C08C19/25—Incorporating silicon atoms into the molecule
-
- 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
- C08C19/26—Incorporating metal atoms into the molecule
-
- 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
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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
- 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
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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
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/46—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides selected from alkali metals
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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
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/46—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides selected from alkali metals
- C08F4/48—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides selected from alkali metals selected from lithium, rubidium, caesium or francium
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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
- C08L15/00—Compositions of rubber derivatives
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- 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 styrene-butadiene copolymer of high modulus, a preparation method thereof, a rubber composition comprising the same, and a tire made from the rubber composition.
- 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.
- a repulsive elasticity of 50 ° C. to 80 ° C., tan ⁇ , Goodrich heating and the like are used as an evaluation index of the vulcanized rubber. That is, a rubber material having a high rebound elasticity at the above temperature or a small tan ⁇ or good rich heat generation is preferable.
- conjugated diene-based (co) polymers such as styrene-butadiene rubber (hereinafter referred to as SBR) or butadiene rubber (hereinafter referred to as BR) have been produced by emulsion polymerization or solution polymerization and used as rubber for tires. .
- SBR styrene-butadiene rubber
- BR butadiene rubber
- 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 rubber, and the movement of the chain ends can be reduced by the bonding or modification of the chain ends, and the bonding strength with fillers such as silica or carbon black can be increased. It is widely used as a rubber material for tires.
- the vinyl content in the SBR is increased to increase the glass transition temperature of the rubber, thereby controlling tire required properties such as running resistance and braking force, and properly adjusting the glass transition temperature. By adjusting the fuel consumption can be reduced.
- 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.
- carbon black and silica are used as reinforcing fillers for tire treads, and when silica is used as reinforcing fillers, low hysteresis loss and wet skid resistance are improved.
- the hydrophilic surface silica has a disadvantage of poor dispersibility due to low affinity with rubber compared to the hydrophobic surface carbon black, so that a separate silane coupler may be used to improve dispersibility or to impart a bond between silica and rubber. It is necessary to use a ring agent.
- the present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide a modified styrene-butadiene copolymer of high modification rate.
- Another object of the present invention is to provide a method for producing the modified styrene-butadiene copolymer.
- Still another object of the present invention is to provide a rubber composition comprising the modified styrene-butadiene copolymer.
- Another object of the present invention to provide a tire manufactured using the rubber composition.
- Another object of the present invention is to provide a modifier useful for the preparation of the modified styrene-butadiene copolymer.
- the present invention provides a modified styrene-butadiene copolymer containing a modifier-derived functional group represented by the following formula (1).
- A is a hydrocarbon group having 1 to 20 carbon atoms or a hydrocarbon group having 1 to 20 carbon atoms containing at least one hetero atom selected from the group consisting of N, S and O,
- R 1 and R 2 are each independently unsubstituted or substituted with one or more substituents selected from the group consisting of a linear or branched alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, and an aryl group having 6 to 30 carbon atoms Divalent hydrocarbon group having 1 to 20 carbon atoms,
- R 3 to R 5 are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms
- n is an integer of 1 or 2
- n is an integer of 2
- the present invention comprises the steps of polymerizing an aromatic vinyl monomer and conjugated diene monomer in the presence of an organometallic compound in a hydrocarbon solvent to prepare an active polymer in which the alkali metal is bound (step 1); And it provides a method for producing the modified styrene-butadiene copolymer comprising the step (step 2) of reacting the active polymer with a modifier represented by the formula (1).
- the present invention also provides a rubber composition comprising the modified styrene-butadiene copolymer.
- the present invention provides a tire manufactured using the rubber composition.
- the present invention provides a denaturing agent having the structure of Chemical Formula 1.
- the modified styrene-butadiene copolymer according to the present invention may be excellent in affinity with a filler such as silica by including a modifier-derived functional group represented by Formula 1, such as a tertiary amine group and a silica affinity group or a hexane affinity group. It can show a high denaturation rate.
- a filler such as silica by including a modifier-derived functional group represented by Formula 1, such as a tertiary amine group and a silica affinity group or a hexane affinity group. It can show a high denaturation rate.
- the modified styrene-butadiene copolymer according to the present invention can easily prepare a modified styrene-butadiene copolymer having a high modification rate by high solubility of the modifier by using a modifier represented by the formula (1).
- the rubber composition according to the present invention may be excellent in workability by including a modified styrene-butadiene copolymer having excellent affinity with the filler, and as a result, the processed product (for example, a tire) manufactured using the rubber composition may be tensile. Strength, wear resistance and wet road resistance properties may be excellent.
- the denaturant represented by Formula 1 according to the present invention has an effect of not increasing the pattern viscosity due to hydrolysis and condensation reaction by introducing a highly reactive carbonyl group at the anion terminal.
- FIG. 1 schematically shows a modification reaction using a denaturing agent according to an embodiment of the present invention.
- the present invention provides a modified styrene-butadiene copolymer having excellent affinity with fillers and improved processability.
- the modified styrene-butadiene copolymer according to an embodiment of the present invention is characterized by including a modifier-derived functional group represented by the following formula (1).
- A is a hydrocarbon group having 1 to 20 carbon atoms or a hydrocarbon group having 1 to 20 carbon atoms containing at least one hetero atom selected from the group consisting of N, S and O,
- R 1 and R 2 are each independently unsubstituted or substituted with one or more substituents selected from the group consisting of a linear or branched alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, and an aryl group having 6 to 30 carbon atoms Divalent hydrocarbon group having 1 to 20 carbon atoms,
- R 3 to R 5 are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms
- n is an integer from 0 to 3
- n is an integer of 1 or 2 provided that n is an integer of 2, if said A is a C1-C20 hydrocarbon group.
- the modified styrene-butadiene copolymer may be prepared by reacting the active polymer to which the organic alkali metal is bound and the modifier represented by Formula 1 through the production method described below, wherein the modified styrene-butadiene copolymer is represented by Formula 1
- a modifier-derived functional group represented by physical properties can be improved.
- the modifying agent represented by Chemical Formula 1 is a functional functional group capable of improving physical properties of the copolymer, and includes at least one of inorganic filler affinity functional groups and inorganic filler affinity functional groups and solvent affinity functional groups. Can be.
- the denaturant of Formula 1 may include an ester group exhibiting high reactivity with respect to the active site of the active polymer, thereby modifying the styrene-butadiene copolymer with high denaturation rate, and as a result, the functional group substituted with the modifier styrene Butadiene copolymers can be introduced in high yields.
- the modifying agent may be a functional group capable of improving the dispersibility of the inorganic filler by preventing agglomeration between the inorganic fillers in the rubber composition, and may include an amino group, specifically, a tertiary amino group.
- the denaturant has excellent affinity for the solvent used for the modification of the inorganic filler affinity functional group and the styrene-butadiene copolymer which can improve the abrasion resistance and processability of the rubber composition by interacting with the inorganic filler together with the amino group described above. It may contain at least one or more of the solvent-affinity functional groups exhibiting chemical compatibility.
- the inorganic filler affinity functional group is specifically an alkoxysilyl group, which is introduced into the styrene-butadiene copolymer, and then condensation reaction of the functional group on the surface of the inorganic filler, for example, the silanol group on the silica surface when the inorganic filler is silica.
- the wear resistance and processability of the butadiene copolymer can be improved. This improvement can be improved as the number of alkoxysilyl groups increases.
- the solvent-affinity functional group specifically increases the solubility of the denaturant in the solvent during the modification process for the styrene-butadiene copolymer as a hydrocarbon group such as an alkyl group or an aryl group, and as a result, the modification rate of the styrene-butadiene copolymer Can be improved.
- A may be a hydrocarbon group having 1 to 20 carbon atoms or a hydrocarbon group having 1 to 20 carbon atoms including at least one hetero atom selected from the group consisting of N, S, and O.
- A is a hydrocarbon group having 1 to 20 carbon atoms
- it is selected from the group consisting of an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, and an arylalkyl group having 7 to 20 carbon atoms.
- A may be selected from the group consisting of an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an arylalkyl group having 7 to 12 carbon atoms. have.
- A when A is a C1-C20 hydrocarbon group containing a hetero atom, it contains a hetero atom instead of one or more carbon atoms in a hydrocarbon group;
- at least one hydrogen atom bonded to a carbon atom in a hydrocarbon group may be substituted with a hetero atom or a hetero atom-containing functional group, wherein the hetero atom may be selected from the group consisting of N, O, and S.
- A is a C1-C20 hydrocarbon group containing a hetero atom, an alkoxy group; Phenoxy group; Carboxyl groups; Acid anhydride groups; Amino group; Amide group; Epoxy groups; Mercapto group; -[R 11 O] x R 12 (wherein R 11 is an alkylene group having 2 to 20 carbon atoms, R 12 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, and an aryl having 6 to 20 carbon atoms) Group and an arylalkyl group having 7 to 20 carbon atoms, and x is an integer of 2 to 10; Hydrocarbon group having 1 to 20 carbon atoms containing at least one functional group selected from the group consisting of hydroxy group, alkoxy group, phenoxy, carboxyl group, ester group, acid anhydride group, amino group, amide group, epoxy group and mercapto group (for example, Hydroxy
- A is an alkyl group having 1 to 20 carbon atoms including a hetero atom, an alkoxy group having 1 to 20 carbon atoms, an alkoxyalkyl group having 2 to 20 carbon atoms, a phenoxyalkyl group having 7 to 20 carbon atoms, and 1 to C carbon atoms 20 aminoalkyl group and-[R 11 O] x R 12 (wherein R 11 is an alkylene group having 2 to 10 carbon atoms, R12 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, and 6 carbon atoms) It may be selected from the group consisting of an aryl group of 18 to 18 and an arylalkyl group of 7 to 18 carbon atoms, x is an integer of 2 to 10).
- R 1 and R 2 are each independently a divalent hydrocarbon group having 1 to 20 carbon atoms, specifically, an alkylene group having 1 to 10 carbon atoms such as methylene group, ethylene group or propylene group; Arylene groups having 6 to 20 carbon atoms such as a phenylene group and the like; Or an arylalkylene group having 7 to 20 carbon atoms as a combination group thereof. More specifically, R 1 and R 2 may be each independently an alkylene group having 1 to 5 carbon atoms. More specifically, R 1 may be an alkylene group having 2 or 3 carbon atoms, and R 2 may be an alkylene group having 1 to 3 carbon atoms.
- each of R 1 and R 2 may be independently substituted with one or more substituents selected from the group consisting of a linear or branched alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, and an aryl group having 6 to 30 carbon atoms. It may be.
- R 3 to R 5 are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms, specifically, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 18 carbon atoms, and having 6 to 18 carbon atoms. It may be selected from the group consisting of an aryl group and combinations thereof. More specifically, R 3 and R 4 are each independently an alkyl group having 1 to 5 carbon atoms, R 5 may be an alkyl group having 1 to 5 carbon atoms or a cycloalkyl group having 3 to 8 carbon atoms. More specifically, R 3 to R 5 may be each independently an alkyl group having 1 to 5 carbon atoms.
- m is an integer of 0 to 3, more specifically may be an integer of 0 to 2.
- n is an integer of 1 or 2, provided that n is an integer of 2 provided that A is a hydrocarbon group of 1 to 20 carbon atoms.
- A is an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, an arylalkyl group having 7 to 12 carbon atoms, and alkoxy having 2 to 10 carbon atoms.
- Alkyl group, phenoxyalkyl group having 7 to 12 carbon atoms, aminoalkyl group having 1 to 10 carbon atoms, and-[R 11 O] x R 12 (Wherein R 11 is an alkylene group having 2 to 10 carbon atoms, R 12 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, an aryl group having 6 to 18 carbon atoms and an arylalkyl group having 7 to 18 carbon atoms) It is selected from the group consisting of, x is any one selected from the group consisting of 2 to 10, R 1 and R 2 are each independently an alkylene group having 1 or 5 carbon atoms, R 3 and R 4 are each Independently an alkyl group having 1 to 5 carbon atoms, R 5 is an alkyl group having 1 to 5 carbon atoms or a cycloalkyl group having 3 to 8 carbon atoms, m is an integer of 0 to 2 and
- the denaturing agent is 2-methoxyethyl 3- (bis (3-triethoxysilyl) propyl) amino) propanoate (2-methoxyethyl 3- (bis (3-triethoxysilylpropyl) amino) propanoate), 2-phenoxyethyl 3- (bis (3- (triethoxysilyl) propyl) amino) propanoate, 2-methoxy Ethyl 3- (bis (3- (diethoxy (methyl) silyl) propyl) amino) propanoate, 2-methoxyethyl 3- (bis (3- (diethoxy (methyl) silyl) propyl) amino) propanoate), 2- Ethoxyethyl 3- (bis (3-diethoxy (methyl) silyl) propyl) amino) propanoate (2-ethoxyethyl 3- (bis (3- (diethoxy (methyl) silyl) propyl) amino) propanoate), ethyl 3- (bis (3-diethoxy (
- the denaturing agent of Formula 1 is 2-phenoxyethyl 3- (cyclohexyl ((triethoxysilyl) methyl) amino) propanoate, 2-methoxyethyl 3- (cyclohexyl ((triethoxysilyl ) Methyl) amino) propanoate, 2- (dimethylamino) ethyl 3- (cyclohexyl ((triethoxysilyl) methyl) amino) propanoate, 2,5,8,11,14,17,20, 23,26-nonaoxaoctachoic acid-28-yl 3- (bis (3- (triethoxysilyl) propyl) amino) propanoate, 2- (2- (2- (2-phenoxyethoxy) Ethoxy) ethoxy) ethyl 3- (bis (3- (triethoxysilyl) propyl) amino) propanoate, 2-phenoxyethyl 3- (bis (3-triethoxysilyl)
- the denaturant may be a solubility (solubilitity) in a non-polar solvent, such as 100 g of hexane at 25 °C, 1 atm pressure of 10 g or more.
- solubility of the denaturant means the degree of clear dissolution without a hazy phenomenon when observed by the naked eye. By exhibiting such high solubility, it is possible to exhibit an excellent modification rate for the styrene-butadiene copolymer.
- the denaturant according to the present invention has an optimized functional group capable of maximizing affinity for inorganic fillers and solvents, and thus is used as a modifier of styrene-butadiene copolymers to provide excellent viscoelasticity, tensile properties and Workability can be provided.
- the modified styrene-butadiene copolymer may be a copolymer of a conjugated diene monomer and an aromatic vinyl monomer. That is, the modified styrene-butadiene copolymer may include a conjugated diene monomer derived unit and an aromatic vinyl monomer derived unit.
- derived unit may refer to a component, a structure, or the substance itself resulting from a substance.
- modified styrene-butadiene copolymer may be a random copolymer.
- random copolymer may indicate that the structural units constituting the copolymer are randomly arranged.
- the conjugated diene monomer is not particularly limited, but for example, 1,3-butadiene, 2,3-dimenyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, isoprene and 2- It may be one or more selected from the group consisting of phenyl-1,3-butadiene.
- the modified styrene-butadiene copolymer may include 60% by weight or more, specifically 60% by weight to 90% by weight, more specifically 60% by weight to 85% by weight of the conjugated diene-based monomer-derived unit.
- the aromatic vinyl monomer is not particularly limited, but for example, styrene, ⁇ -methyl styrene, 3-methyl styrene, 4-methyl styrene, 4-propyl styrene, 1-vinylnaphthalene, 4-cyclohexyl styrene, 4- (p It may be one or more selected from the group consisting of -methylphenyl) styrene and 1-vinyl-5-hexylnaphthalene.
- the modified styrene-butadiene copolymer may include 40 wt% or less, specifically 10 wt% to 40 wt%, and more specifically 15 wt% to 40 wt% of the aromatic vinyl monomer-derived unit.
- the modified styrene-butadiene copolymer has a number average molecular weight of 1,000 g / mol to 2,000,000 g / mol, specifically 10,000 g / mol to 2,000,000 g / mol, more specifically 100,000 g / mol to 2,000,000 g / mol Can be.
- the modified styrene-butadiene copolymer may have a molecular weight distribution (Mw / Mn) of 1.1 to 10, specifically 1.1 to 5, more specifically 1.1 to 4.
- Mw / Mn molecular weight distribution
- the processability of the rubber composition including the same may be improved, and as a result, mechanical properties, low fuel consumption characteristics, and wear resistance of the manufactured molded article may be improved.
- the modified styrene-butadiene copolymer may have a vinyl content of 5 wt%, specifically 10 wt% or more, and more specifically 14 wt% to 70 wt%. If the modified styrene-butadiene copolymer exhibits a vinyl content in the above range, the glass transition temperature may be adjusted to an appropriate range, thereby satisfying the properties required for the tire such as running resistance and braking force when applied to the tire. Rather, it reduces fuel consumption.
- the vinyl content refers to the content of 1,2-added conjugated diene monomer, not 1,4-addition, based on 100% by weight of the styrene-butadiene copolymer composed of a monomer having a vinyl group and an aromatic vinyl monomer. .
- the present invention provides a method for producing a modified styrene-butadiene copolymer comprising a modifier derived group represented by the formula (1).
- the production method comprises the steps of preparing an active polymer combined with an alkali metal by polymerizing an aromatic vinyl monomer and a conjugated diene monomer in the presence of an organometallic compound in a hydrocarbon solvent (step 1); And reacting the active polymer with a denaturant represented by Formula 1 below (step 2).
- A is a hydrocarbon group having 1 to 20 carbon atoms or a hydrocarbon group having 1 to 20 carbon atoms containing at least one hetero atom selected from the group consisting of N, S and O,
- R 1 and R 2 are each independently unsubstituted or substituted with one or more substituents selected from the group consisting of a linear or branched alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, and an aryl group having 6 to 30 carbon atoms Divalent hydrocarbon group having 1 to 20 carbon atoms,
- R 3 to R 5 are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms
- n is an integer of 1 or 2
- n is an integer of 2
- Step 1 is a step for preparing an active polymer combined with an organic metal, it can be carried out by polymerizing a conjugated diene monomer and an aromatic vinyl monomer in the presence of an organometallic compound in a hydrocarbon solvent.
- the active polymer may refer to a polymer in which a polymer anion and an organic metal cation are bonded.
- conjugated diene monomer and the aromatic vinyl monomer may be as described above, and the amount of each monomer may be in the range described above for the conjugated diene monomer derived unit and the aromatic vinyl monomer derived unit in the modified styrene-butadiene copolymer. It may be used to adjust appropriately within the range adjusted to.
- 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 may be one or more selected from the group consisting of an organic alkali metal compound or an organic lithium compound, an organic sodium compound, an organic potassium compound, an organic rubidium compound, and an organic cesium compound.
- the organometallic compound may be methyllithium, ethyllithium, propyllithium, n-butyllithium, s-butyllithium, t-butyllithium, hexyllithium, n-decyllithium, t-octylithium, phenyllithium, 1- Naphthyllithium, n-eicosilium, 4-butylphenyllithium, 4-tolyllithium, cyclohexyllithium, 3,5-di-n-heptylcyclohexyllithium, 4-cyclopentyllithium, naphthyl sodium, naphthyl It may be one or more selected from the group consisting of potassium, lithium alkoxide, sodium alkoxide, potassium alkoxide, lithium sulfonate, sodium sulfonate, potassium sulfonate, lithium amide, sodium amide, potassium amide, lithium isopropylamide.
- the organometallic compound may be used in an amount of 0.01 mmnol to 10 mmol based on 100 g of a total monomer. Specifically, the organometallic compound may be used in an amount of 0.05 mmol to 5 mmol, more specifically 0.1 mmol to 2 mmol, and more specifically 0.1 mmol to 1 mmol based on 100 g of the total monomer.
- the polymerization of step 1 may be carried out by further adding a polar additive as needed, the polar additive is 0.001 g to 50 g, specifically 0.001 g to 10 g, more specifically based on a total of 100 g monomer May be added at 0.005 g to 0.1 g.
- the polar additive may be added in an amount of 0.001 g to 10 g, specifically 0.005 g to 1 g, and more specifically 0.005 g to 0.1 g based on 1 mmol of the total organometallic compound.
- the polar additives may be salts, ethers, amines or mixtures thereof, specifically tetrahydrofuran, ditetrahydrofurylpropane, diethyl ether, cycloamal ether, dipropyl ether, ethylene dimethyl ether, ethylene dimethyl ether, di From the group consisting of ethylene glycol, dimethyl ether, tertiary butoxyethoxyethane bis (3-dimethylaminoethyl) ether, (dimethylaminoethyl) ethyl ether, trimethylamine, triethylamine, tripropylamine and tetramethylethylenediamine It may be one or more selected. More specifically, it may be ditetrahydropropylpropane, triethylamine or tetramethylethylenediamine.
- the reaction rate may be easily compensated for by forming a random copolymer. Can be induced.
- the polymerization of step 1 may be anionic polymerization, and specifically, may be living anionic polymerization of obtaining an active site by a growth reaction by anions.
- the polymerization may be elevated temperature polymerization, isothermal polymerization or constant temperature polymerization (thermal insulation polymerization).
- the constant temperature polymerization refers to a polymerization method including a step of polymerizing with self-heating reaction without adding heat after the addition of the organometallic compound
- the temperature rising polymerization is a temperature by optionally applying heat after adding the organometallic compound
- the isothermal polymerization refers to a polymerization method of increasing the heat by adding heat after the addition of the organometallic compound or increasing the heat or taking away the heat to maintain a constant temperature of the polymerization product.
- the polymerization may be performed at a temperature range of -20 ° C to 200 ° C, specifically 0 ° C to 150 ° C, and more specifically 10 ° C to 120 ° C.
- Step 2 is a step of reacting the active polymer with a modifier represented by Chemical Formula 1 to prepare a modified styrene-butadiene copolymer.
- the modifier represented by Formula 1 may be as described above, and may be used in the reaction by mixing one or two or more kinds.
- the modifier represented by Chemical Formula 1 may be used in an amount of 0.1 mol to 10 mol relative to 1 mol of the organometallic compound. Specifically, the modifier represented by Chemical Formula 1 may be used in an amount of 0.3 mol to 2 mol with respect to 1 mol of the organometallic compound. If the denaturant is used in an amount within the ratio range, it is possible to perform a modification reaction of optimum performance, thereby obtaining a styrene-butadiene copolymer having a high modification rate.
- the reaction of step 2 is a modification reaction for introducing a functional group into the copolymer, it may be to perform the reaction for 1 minute to 5 hours at 0 °C to 90 °C.
- the method for producing the modified styrene-butadiene copolymer according to an embodiment of the present invention may be carried out by a batch polymerization (batch) or a continuous polymerization method comprising one or more reactors.
- the preparation method according to an embodiment of the present invention may further include one or more steps of recovering and drying the solvent and the unreacted monomer, if necessary after step 2 above.
- the present invention also provides a rubber composition comprising the modified styrene-butadiene copolymer.
- the rubber composition according to an embodiment of the present invention is to include a modified styrene-butadiene copolymer 10 wt% or more, specifically 10 wt% to 100 wt%, more specifically 20 wt% to 90 wt%. Can be. If the content of the modified styrene-butadiene copolymer is less than 10% by weight, the effect of improving the wear resistance and the crack resistance of a molded article, for example, a tire manufactured using the rubber composition may be insignificant.
- the rubber composition may further include other rubber components as needed in addition to the modified styrene-butadiene copolymer, 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. Specifically, 1 part by weight to 900 parts by weight based on 100 parts by weight of the modified styrene-butadiene copolymer may be included.
- 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-diene),
- the rubber composition may include 0.1 parts by weight to 200 parts by weight of a filler based on 100 parts by weight of the modified styrene-butadiene copolymer, and specifically, may include 10 parts by weight to 120 parts by weight of a filler.
- the filler may be a silica-based filler, and the silica-based filler is not particularly limited but may be, for example, wet silica (silicate silicate), dry silica (silicate anhydride), calcium silicate, aluminum silicate or colloidal silica. More specifically, the filler may be a wet silica having the most remarkable effect of improving the breaking property and wet grip.
- the rubber composition according to an embodiment of the present invention may further include a carbon black filler as needed.
- silica when silica is used as the filler, 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.
- the compounding amount of the silane coupling agent is usually used. Can be further reduced.
- the silane coupling agent may be used in an amount of 1 to 20 parts by weight based on 100 parts by weight of silica. 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 components described above, various additives commonly used in the rubber industry, specifically, 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 manufactured using the rubber composition.
- the tire may include a tire or a tire tread.
- the present invention provides a modifier useful for the modification of the modified styrene-butadiene copolymer.
- the denaturant is as described above.
- the denaturant represented by Chemical Formula 1 may be prepared by the reaction of the compound of Formula 2 with the compound of Formula 3.
- R is an alkyl having 2 to 20 carbon atoms unsubstituted or substituted with one or more substituents selected from the group consisting of a linear or branched alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, and an aryl group having 6 to 30 carbon atoms. It may be a kenyl group.
- R may be an alkenyl group having 2 to 10 carbon atoms, and more specifically, may be an alkenyl group having 2 to 5 carbon atoms such as an ethylene group.
- the compound of Formula 2 may be ethylene glycol methyl ether acrylate (Ethylene glycol methyl ether acrylate), 2-phenoxyethyl acrylate (2-phenoxyethyl acrylate), ethyl acrylate (ethylacrylate) and the like.
- the compound of Formula 3 is bis [3- (triethoxysilyl) propyl] amine (Bis [3- (triethoxysilyl) propyl] amine) or bis (methyldiethoxysilylpropyl) amine (bis (methyldiethoxysilylpropyl) amine ) And the like.
- the compounds of Formulas 2 and 3 may be used in stoichiometric amounts, specifically, the compound of Formula 3 may be used in a molar ratio of 0.01 to 0.2 with respect to 1 mole of the compound of Formula 2, and more specifically 0.05 to It may be used at a molar ratio of 0.1, even more specifically 0.05 to 0.08 molar ratio.
- reaction of the compound of Formula 2 and the compound of Formula 3 may be carried out in an aqueous solvent.
- aqueous solvent include alcohols (eg, lower alcohols having 1 to 5 carbon atoms such as ethanol), and any one or a mixture of two or more thereof may be used.
- reaction of the compound of Formula 2 and the compound of Formula 3 may be carried out in an inert gas atmosphere.
- the inert gas include nitrogen and argon.
- reaction of the compound of Formula 2 and the compound of Formula 3 may be carried out in a temperature range of 20 °C to 60 °C. If the temperature during the reaction is less than 20 °C reaction rate is too slow, there is a risk that the reaction efficiency is lowered, if the temperature exceeds 60 °C reaction time is too fast the reaction rate is difficult to control the reaction and there is a fear of side reactions.
- a denaturant including a single intramolecular filler affinity functional group and a solvent affinity functional group can be easily prepared.
- styrene Into a 20 L autoclave reactor, 270 g of styrene, 710 g of 1,3 butadiene, 5 kg of normal hexane, 0.94 g of DTP (2,2-di (2-tetrahydrofuryl) propane) were added as a polar additive. It heated up at 40 degreeC. When the temperature inside the reactor reached 40 ° C, 25.40 g (2.62 wt% in hexane, 33% activation) of n-butyllithium was added to the reactor to perform an adiabatic heating reaction. After 20 minutes, 20.0 g of 1,3-butadiene was added to cap the SSBR end with butadiene.
- DTP 2,2-di (2-tetrahydrofuryl) propane
- a modified conjugated diene-based copolymer was prepared in the same manner as in Example 1 except that N, N-bis (triethoxysilylpropyl) piperazine was used as the modifier.
- the binding efficiency (%) and the pattern viscosity (MV) were measured, respectively. The results are shown in Table 1 below.
- the weight average molecular weight (Mw), the number average molecular weight (Mn) and the maximum peak molecular weight (Mp) were measured through GPC (Gel permeation chromatohraph) analysis, molecular weight distribution (MWD, Mw / Mn) and binding efficiency (%) It calculated and obtained from each said measured molecular weight.
- GPC Gel permeation chromatohraph analysis
- MWD molecular weight distribution
- Mw / Mn molecular weight distribution
- binding efficiency (%) % It calculated and obtained from each said measured molecular weight.
- the GPC used a combination of two PLgel Olexis (Polymer Laboratories Co.) column and one PLgel mixed-C (Polymer Laboratories Co.) column, all of the newly replaced column was a mixed bed column,
- the GPC standard material was calculated using polystyrene (PS) when calculating the molecular weight.
- the modified styrene-butadiene copolymers of Examples 1 and 2 prepared using the modifying agent according to the present invention are polymers compared to the modified styrene-butadiene copolymer of the comparative example prepared using the conventional modifying agent. It was confirmed that the binding efficiency of the components increased significantly.
- the binding efficiency of the polymer component of the modified styrene-butadiene copolymer of Example 1 (62%, Mp 77X10 4 And 124 ⁇ 10 4 ) showed a 2.7-fold increase in the binding efficiency (57%, Mp 53X10 4 ) of the polymer component of the styrene-butadiene copolymer of Comparative Example, indicating high molecular weight.
- the increase in the molecular weight indicates that the denaturant according to the present invention has increased reactivity by introducing an ester group having a high reactivity with the polymer active moiety compared to the conventional denaturant, thereby producing a high-modified polymer. Is the result.
- Example 2 although the amount of the modifier was 77% of the amount of the modifier in the comparative example, it was confirmed that the binding efficiency of the polymer component was increased (60%) with high modification efficiency. As a result, as shown in FIG.
- the active site (-Li + ) of the metal-bonded copolymer is bonded to oxygen in the ethylene glycol group of the denaturing agent and the reaction rate is increased by increasing the reactivity of the anion thereto.
- the modification reaction can be more easily achieved, thereby increasing the coupling efficiency of the polymer component.
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Abstract
Description
구분 | GPC | ||||
Mn(g/mol, Ⅹ104) | Mw(g/mol, Ⅹ104) | Mp(g/mol, Ⅹ104) | 결합효율(%) | 분자량 분포(Mw/Mn) | |
실시예 1 | 49 | 120 | 35 | 38 | 2.4 |
77 | 28 | ||||
124 | 34 | ||||
실시예 2 | 27 | 42 | 30 | 40 | 1.4 |
64 | 60 | ||||
비교예 | 34 | 45 | 25 | 43 | 1.3 |
53 | 57 |
Claims (26)
- 하기 화학식 1로 표시되는 변성제 유래 작용기를 포함하는 것인 변성 스티렌-부타디엔 공중합체:[화학식 1]상기 화학식 1에서,A는 탄소수 1 내지 20의 탄화수소기이거나, 또는 N, S 및 O로 이루어진 군에서 선택되는 헤테로 원자를 1종 이상 포함하는 탄소수 1 내지 20의 탄화수소기이고,R1 및 R2는 각각 독립적으로 탄소수 1 내지 20의 선형 또는 분지형 알킬기, 탄소수 3 내지 20의 사이클로알킬기 및 탄소수 6 내지 30의 아릴기로 이루어진 군에서 선택되는 1종 이상의 치환기로 치환되거나 또는 비치환된 탄소수 1 내지 20의 2가 탄화수소기이며,R3 내지 R5는 각각 독립적으로 탄소수 1 내지 20의 1가 탄화수소기이고,m은 0 내지 3의 정수이고, 그리고 n은 1 또는 2의 정수이며, 단, 상기 A가 탄소수 1 내지 20의 탄화수소기이면, n은 2의 정수이다.
- 청구항 1에 있어서,상기 화학식 1에서,A는 탄소수 1 내지 20의 알킬기, 탄소수 3 내지 20의 사이클로알킬기, 탄소수 6 내지 20의 아릴기, 탄소수 7 내지 20의 아릴알킬기, 탄소수 1 내지 20의 알콕시기, 탄소수 2 내지 20의 알콕시알킬기, 탄소수 7 내지 20의 페녹시알킬기, 탄소수 1 내지 20의 아미노알킬기 및 -[R11O]xR12 (이때 R11은 탄소수 2 내지 10의 알킬렌기이고, R12는 수소원자, 탄소수 1 내지 10의 알킬기, 탄소수 3 내지 12의 사이클로알킬기, 탄소수 6 내지 18의 아릴기 및 탄소수 7 내지 18의 아릴알킬기로 이루어진 군에서 선택되며, x는 2 내지 10의 정수임)로 이루어진 군에서 선택되는 것인 변성 스티렌-부타디엔 공중합체.
- 청구항 1에 있어서,상기 화학식 1에서,A는 탄소수 1 내지 10의 알킬기, 탄소수 3 내지 12의 사이클로알킬기, 탄소수 6 내지 12의 아릴기, 탄소수 7 내지 12의 아릴알킬기, 탄소수 2 내지 10의 알콕시알킬기, 탄소수 7 내지 12의 페녹시알킬기, 탄소수 1 내지 10의 아미노알킬기 및 -[R11O]xR12 (이때 R11은 탄소수 2 내지 10의 알킬렌기이고, R12는 수소원자, 탄소수 1 내지 10의 알킬기, 탄소수 3 내지 12의 사이클로알킬기, 탄소수 6 내지 18의 아릴기 및 탄소수 7 내지 18의 아릴알킬기로 이루어진 군에서 선택되며, x는 2 내지 10의 정수임)로 이루어진 군에서 선택되는 어느 하나이고,R1 및 R2는 각각 독립적으로 탄소수 1 내지 5의 알킬렌기이고,R3 및 R4는 각각 독립적으로 탄소수 1 내지 5의 알킬기이며,R5는 탄소수 1 내지 5의 알킬기 또는 탄소수 3 내지 8의 사이클로알킬기이고,m은 0 내지 2의 정수이며, 그리고 n은 1 또는 2의 정수이며, 단 상기 A가 탄소수 1 내지 20의 알킬기, 탄소수 3 내지 20의 사이클로알킬기, 탄소수 6 내지 20의 아릴기, 또는 탄소수 7 내지 20의 아릴알킬기일 때, n은 2의 정수인 것인 변성 스티렌-부타디엔 공중합체.
- 청구항 1에 있어서,A는 탄소수 1 내지 10의 알킬기, 탄소수 2 내지 10의 알콕시알킬기 및 탄소수 7 내지 12의 페녹시알킬기로 이루어진 군에서 선택되는 어느 하나이고,R1 및 R2는 각각 독립적으로 탄소수 1 내지 5의 알킬렌기이며,R3 및 R4는 각각 독립적으로 탄소수 1 내지 5의 알킬기이고, 그리고m은 0 또는 1의 정수이고, n은 2의 정수인 변성 스티렌-부타디엔계 공중합체.
- 청구항 1에 있어서,상기 변성제는 2-페녹시에틸 3-(시클로헥실((트리에톡시실릴)메틸)아미노)프로파노에이트, 2-메톡시에틸 3-(시클로헥실((트리에톡시실릴)메틸)아미노)프로파노에이트, 2-(디메틸아미노)에틸 3-(시클로헥실((트리에톡시실릴)메틸)아미노)프로파노에이트, 2,5,8,11,14,17,20,23,26-노나옥사옥타코산-28-일 3-(비스(3-(트리에톡시실릴)프로필)아미노)프로파노에이트, 2-(2-(2-(2-페녹시에톡시)에톡시)에톡시)에틸 3-(비스(3-(트리에톡시실릴)프로필)아미노)프로파노에이트, 2-페녹시에틸 3-(비스(3-트리에톡시실릴)프로필)아미노)프로파노에이트, 2-메톡시에틸 3-(비스(3-(트리에톡시실릴)프로필)아미노)프로파노에이트, 2-(디메틸아미노)에틸 3-(비스(3-트리에톡시실릴)프로필)아미노)프로파노에이트, 2-(2-(2-(2-페녹시에톡시)에톡시)에톡시)에틸 3-(시클로헥실((트리에톡시실릴)메틸)아미노)프로파노에이트, 2-메톡시에틸 3-(비스(3-(디에톡시(메틸)실릴)프로필)아미노)프로파노에이트 및 에틸 3-(비스(3-(디에톡시(메틸)실릴)프로필)아미노)프로파노에이트로 이루어진 군으로부터 선택된 1종 이상인 것인 스티렌-부타디엔 공중합체.
- 청구항 1에 있어서,상기 공중합체는 방향족 비닐계 단량체 유래단위를 1 중량% 내지 60 중량%로 포함하는 것인 변성 스티렌-부타디엔 공중합체.
- 청구항 1에 있어서,상기 공중합체는 1,000 g/mol 내지 2,000,000 g/mol의 수평균분자량을 갖는 것인 변성 스티렌-부타디엔 공중합체.
- 청구항 1에 있어서,상기 공중합체는 분자량 분포(Mw/Mn)가 1.05 내지 10인 것인 변성 스티렌-부타디엔 공중합체.
- 청구항 1에 있어서,상기 공중합체는 비닐 함량이 5 중량% 이상인 것인 변성 스티렌-부타디엔 공중합체.
- 1) 탄화수소 용매 중에서, 유기 금속 화합물 존재 하에서 방향족 비닐계 단량체 및 공액디엔계 단량체를 중합하여 알칼리 금속이 결합된 활성 중합체를 제조하는 단계; 및2) 상기 활성 중합체를 하기 화학식 1로 표시되는 변성제와 반응시키는 단계를 포함하는 청구항 1의 변성 스티렌-부타디엔 공중합체의 제조방법:[화학식 1]상기 화학식 1에서,A는 탄소수 1 내지 20의 탄화수소기이거나, 또는 N, S 및 O로 이루어진 군에서 선택되는 1종 이상의 헤테로 원자를 포함하는 탄소수 1 내지 20의 탄화수소기이고,R1 및 R2는 각각 독립적으로 탄소수 1 내지 20의 선형 또는 분지형 알킬기, 탄소수 3 내지 20의 사이클로알킬기 및 탄소수 6 내지 30의 아릴기로 이루어진 군에서 선택되는 1종 이상의 치환기로 치환되거나 또는 비치환된 탄소수 1 내지 20의 2가 탄화수소기이며,R3 내지 R5는 각각 독립적으로 탄소수 1 내지 20의 1가 탄화수소기이고,m은 0 내지 3의 정수이고, 그리고 n은 1 또는 2의 정수이며, 단, 상기 A가 탄소수 1 내지 20의 탄화수소기이면, n은 2의 정수이다.
- 청구항 10에 있어서,상기 유기 금속 화합물은 단량체 총 100 g을 기준으로 0.01 mmnol 내지 10 mmol로 사용하는 것인 변성 스티렌-부타디엔 공중합체의 제조방법.
- 청구항 10에 있어서,상기 유기 금속 화합물은 메틸리튬, 에틸리튬, 프로필리튬, n-부틸리튬, s-부틸리튬, t-부틸리튬, 헥실리튬, n-데실리튬, t-옥틸리튬, 페닐리튬, 1-나프틸리튬, n-에이코실리튬, 4-부틸페닐리튬, 4-톨릴리튬, 사이클로헥실리튬, 3,5-디-n-헵틸사이클로헥실리튬, 4-사이클로펜틸리튬, 나프틸나트륨, 나프틸칼륨, 리튬 알콕사이드, 나트륨 알콕사이드, 칼륨 알콕사이드, 리튬 술포네이트, 나트륨 술포네이트, 칼륨 술포네이트, 리튬 아미드, 나트륨 아미드, 칼륨아미드 및 리튬 이소프로필아미드로 이루어진 군으로부터 선택된 1종 이상인 것인 변성 스티렌-부타디엔 공중합체의 제조방법.
- 청구항 10에 있어서,상기 단계 1)의 중합은 극성 첨가제를 더 첨가하여 수행하는 것인 변성 스티렌-부타디엔 공중합체의 제조방법.
- 청구항 13에 있어서,상기 극성 첨가제는 유기 금속 화합물 총 1 mmol 대비 0.001 g 내지 10 g으로 사용하는 것인 변성 스티렌-부타디엔 공중합체의 제조방법.
- 청구항 10에 있어서,상기 화학식 1로 표시되는 변성제는 2-페녹시에틸 3-(시클로헥실((트리에톡시실릴)메틸)아미노)프로파노에이트, 2-메톡시에틸 3-(시클로헥실((트리에톡시실릴)메틸)아미노)프로파노에이트, 2-(디메틸아미노)에틸 3-(시클로헥실((트리에톡시실릴)메틸)아미노)프로파노에이트, 2,5,8,11,14,17,20,23,26-노나옥사옥타코산-28-일 3-(비스(3-(트리에톡시실릴)프로필)아미노)프로파노에이트, 2-(2-(2-(2-페녹시에톡시)에톡시)에톡시)에틸 3-(비스(3-(트리에톡시실릴)프로필)아미노)프로파노에이트, 2-페녹시에틸 3-(비스(3-트리에톡시실릴)프로필)아미노)프로파노에이트, 2-메톡시에틸 3-(비스(3-(트리에톡시실릴)프로필)아미노)프로파노에이트, 2-(디메틸아미노)에틸 3-(비스(3-트리에톡시실릴)프로필)아미노)프로파노에이트, 2-(2-(2-(2-페녹시에톡시)에톡시)에톡시)에틸 3-(시클로헥실((트리에톡시실릴)메틸)아미노)프로파노에이트, 2-메톡시에틸 3-(비스(3-(디에톡시(메틸)실릴)프로필)아미노)프로파노에이트 및 에틸 3-(비스(3-(디에톡시(메틸)실릴)프로필)아미노)프로파노에이트로 이루어진 군으로부터 선택된 1종 이상 것인 변성 스티렌-부타디엔 공중합체의 제조방법.
- 청구항 10에 있어서,상기 화학식 1로 표시되는 변성제는 유기 금속 화합물 1 몰 대비 0.1 mol 내지 10 mol로 사용하는 것인 변성 스티렌-부타디엔 공중합체의 제조방법.
- 청구항 1의 변성 스티렌-부타디엔 공중합체를 포함하는 고무 조성물.
- 청구항 17에 있어서,상기 고무 조성물은 변성 스티렌-부타디엔 공중합체를 10 중량% 이상 포함하는 것인 고무 조성물.
- 청구항 17에 있어서,상기 고무 조성물은 중합체 100 중량부에 대하여 0.1 중량부 내지 200 중량부의 충전제를 포함하는 것인 고무 조성물.
- 청구항 19에 있어서,상기 충전제는 실리카계 충전제, 카본블랙계 충전제 또는 이들 조합인 것인 고무 조성물.
- 청구항 17의 고무 조성물로부터 제조된 타이어.
- 하기 화학식 1의 구조를 갖는 변성제:[화학식 1]상기 화학식 1에서,A는 탄소수 1 내지 20의 탄화수소기이거나, 또는 N, S 및 O로 이루어진 군에서 선택되는 헤테로 원자를 1종 이상 포함하는 탄소수 1 내지 20의 탄화수소기이고,R1 및 R2는 각각 독립적으로 탄소수 1 내지 20의 선형 또는 분지형 알킬기, 탄소수 3 내지 20의 사이클로알킬기 및 탄소수 6 내지 30의 아릴기로 이루어진 군에서 선택되는 1종 이상의 치환기로 치환되거나 또는 비치환된 탄소수 1 내지 20의 2가 탄화수소기이며,R3 내지 R5는 각각 독립적으로 탄소수 1 내지 20의 1가 탄화수소기이고,m은 0 내지 3의 정수이고, 그리고 n은 1 또는 2의 정수이며, 단, 상기 A가 탄소수 1 내지 20의 탄화수소기이면, n은 2의 정수이다.
- 청구항 22에 있어서,상기 화학식 1에서 A는 탄소수 1 내지 20의 알콕시기, 탄소수 1 내지 20의 알콕시알킬기, 및 탄소수 7 내지 20의 페녹시알킬기로 이루어진 군에서 선택되는 어느 하나이고,R1 및 R2는 각각 독립적으로 탄소수 1 내지 5의 알킬렌기이며,R3 내지 R5는 각각 독립적으로 탄소수 1 내지 5의 알킬기이고,m은 0 또는 1의 정수이고, n은 2의 정수인 변성제.
- 청구항 22에 있어서,상기 변성제는 스티렌-부타디엔 공중합체 변성용인 것인 변성제.
- 하기 화학식 2의 화합물과 하기 화학식 3의 화합물을 반응시키는 단계를 포함하는 청구항 22의 변성제의 제조방법:[화학식 2][화학식 3]상기 화학식 2 및 3에서,A는 탄소수 1 내지 20의 탄화수소기이거나, 또는 N, S 및 O로 이루어진 군에서 선택되는 헤테로 원자를 1종 이상 포함하는 탄소수 1 내지 20의 탄화수소기이고,R은 탄소수 1 내지 20의 선형 또는 분지형 알킬기, 탄소수 3 내지 20의 사이클로알킬기 및 탄소수 6 내지 30의 아릴기로 이루어진 군에서 선택되는 1종 이상의 치환기로 치환되거나 또는 비치환된 탄소수 2 내지 20의 알케닐기이며,R2는 탄소수 1 내지 20의 선형 또는 분지형 알킬기, 탄소수 3 내지 20의 사이클로알킬기 및 탄소수 6 내지 30의 아릴기로 이루어진 군에서 선택되는 1종 이상의 치환기로 치환되거나 또는 비치환된 탄소수 1 내지 20의 2가 탄화수소기이며,R3 내지 R5는 각각 독립적으로 탄소수 1 내지 20의 1가 탄화수소기이고,m은 0 내지 3의 정수이고, 그리고 n은 1 또는 2의 정수이며, 단, 상기 A가 탄소수 1 내지 20의 탄화수소기이면, n은 2의 정수이다.
- 청구항 25에 있어서,상기 화학식 3의 화합물은 상기 화학식 2의 화합물 1몰에 대하여 0.01 내지 0.2몰비로 사용되는 것인 변성제의 제조방법.
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