WO2017111557A1 - 실릴기 함유 신규 화합물, 변성 공액디엔계 중합체 및 이의 제조방법 - Google Patents
실릴기 함유 신규 화합물, 변성 공액디엔계 중합체 및 이의 제조방법 Download PDFInfo
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- WO2017111557A1 WO2017111557A1 PCT/KR2016/015237 KR2016015237W WO2017111557A1 WO 2017111557 A1 WO2017111557 A1 WO 2017111557A1 KR 2016015237 W KR2016015237 W KR 2016015237W WO 2017111557 A1 WO2017111557 A1 WO 2017111557A1
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- conjugated diene
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- 0 *[Si](*)(*)*N=C=O Chemical compound *[Si](*)(*)*N=C=O 0.000 description 2
Classifications
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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
-
- 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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F36/02—Homopolymers and 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
- C08F36/04—Homopolymers and 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
- C08F36/06—Butadiene
-
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
-
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/42—Introducing metal atoms or metal-containing groups
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/10—Copolymers of styrene with conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
Definitions
- the present invention relates to a silyl group-containing compound useful for polymer modification, a modified conjugated diene-based polymer comprising a functional group derived from the compound, and a preparation method thereof.
- 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 binding 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.
- US Pat. No. 4,397,994 discloses a technique in which the active anion at the chain end of a polymer obtained by polymerizing styrene-butadiene in a nonpolar solvent using alkyllithium, a monofunctional initiator, using a binder such as a tin compound. It was.
- carbon black and silica are used as reinforcing fillers for tire treads.
- 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 compound comprising a structural unit represented by the formula (1) useful for polymer modification.
- Another object of the present invention is to provide a modified conjugated diene-based polymer comprising a functional group derived from the compound.
- Still another object of the present invention is to provide a method for producing a modified conjugated diene polymer using the compound.
- the present invention provides a compound comprising a structural unit represented by the formula (1):
- R 1 to R 3 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or an allyl group having 3 to 20 carbon atoms, wherein at least one of R 1 to R 3 is an alkoxy group having 1 to 20 carbon atoms ,
- R 4 is an alkylene group having 1 to 20 carbon atoms
- x, y and z represent the molar ratio of repeating units constituting the structural unit x x y + z is 1,
- x is from 0.1 to 0.8
- y is 0.1 to 0.8
- z is from 0.1 to 0.8.
- the present invention provides a modified conjugated diene-based polymer comprising a functional group derived from the compound represented by the following formula (4) or (5):
- R 5 is an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an allyl group having 3 to 20 carbon atoms,
- R 7 is an alkyl group having 1 to 20 carbon atoms; C1 having at least one hetero atom selected from N, O and S, which is unsubstituted or substituted with mono-, di- or tri-substituted alkyl silyl groups having 1 to 20 carbon atoms or alkyl groups having 1 to 20 carbon atoms.
- P is a conjugated diene polymer chain
- a and b are each independently an integer of 1 or 2, a + b is 2 or 3,
- R 10 and R 13 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an allyl group having 3 to 20 carbon atoms,
- R 15 is an alkyl group having 1 to 20 carbon atoms; C1 having at least one hetero atom selected from N, O and S, which is unsubstituted or substituted with mono-, di- or tri-substituted alkyl silyl groups having 1 to 20 carbon atoms or alkyl groups having 1 to 20 carbon atoms.
- R 16 is a hetero atom of N, O or S, and when R 16 is O or S, R 15 is absent;
- P is a conjugated diene polymer chain
- c to f are each independently an integer of 0 to 3
- c + e is 1 to 5
- d + f is 1 to 3
- n and m are each independently an integer from 1 to 1000,
- A is a substituent represented by the following formula (6),
- R 1 and R 2 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or an allyl group having 3 to 20 carbon atoms,
- R 4 is an alkylene group having 1 to 20 carbon atoms
- x, y and z represent the molar ratio of repeating units constituting the structural unit x x y + z is 1,
- x is from 0.1 to 0.8
- y is 0.1 to 0.8
- z is from 0.1 to 0.8.
- the present invention is to prepare an active polymer in which an alkali metal is bonded to at least one end by polymerizing a conjugated diene monomer or an aromatic vinyl monomer and a conjugated diene monomer in the presence of an organometallic compound in a hydrocarbon solvent (step 1). ; Firstly reacting the active polymer with a compound represented by Formula 2 or Formula 3 (Step 2); And it provides a method for producing the modified conjugated diene-based polymer comprising the step (step 3) of the second reaction with the compound comprising a structural unit represented by the formula (1) after the first reaction.
- R 5 , R 6 and R 8 Independently from each other an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or an allyl group having 3 to 20 carbon atoms, wherein at least one of R 5 , R 6 and R 8 is an alkoxy group having 1 to 20 carbon atoms,
- R 7 is either an alkyl group having 1 to 20 carbon atoms; C1 having at least one hetero atom selected from N, O and S, which is unsubstituted or substituted with mono-, di- or tri-substituted alkyl silyl groups having 1 to 20 carbon atoms or alkyl groups having 1 to 20 carbon atoms.
- R 9 to R 14 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an allyl group having 3 to 20 carbon atoms, and at least one of R 9 to R 14 has 1 to C carbon atoms. 20 alkoxy groups,
- R 15 is an alkyl group having 1 to 20 carbon atoms; C1 having at least one hetero atom selected from N, O and S, which is unsubstituted or substituted with mono-, di- or tri-substituted alkyl silyl groups having 1 to 20 carbon atoms or alkyl groups having 1 to 20 carbon atoms.
- R 16 is a hetero atom of N, O or S, and when R 16 is O or S, R 15 is absent;
- n and m are each independently an integer from 1 to 1000,
- R 1 to R 3 may be independently of each other allyl odd having 1 to 20 carbon alkyl, alkoxy or 3 to 20 carbon atoms having 1 to 20 carbon atoms, at least one of R 1 to R 3 is an alkoxy group having 1 to 20 carbon atoms and ,
- R 4 is an alkylene group having 1 to 20 carbon atoms
- x, y and z represent the molar ratio of repeating units constituting the structural unit x x y + z is 1,
- x is from 0.1 to 0.8
- y is 0.1 to 0.8
- z is from 0.1 to 0.8.
- the modified conjugated diene-based polymer according to the present invention is combined with a hydroxyl group and a silyl group may be excellent in affinity with the silica-based filler.
- the processability of the rubber composition comprising the modified conjugated diene-based polymer may be excellent, and as a result, the processed product (eg, a tire) manufactured using the rubber composition may have excellent tensile strength and viscoelastic properties.
- the present invention provides a silyl group-containing compound which can be usefully used as a modifier of a polymer such as a conjugated diene polymer.
- the compound according to an embodiment of the present invention is characterized by including a structural unit represented by the following Chemical Formula 1.
- R 1 to R 3 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or an allyl group having 3 to 20 carbon atoms, wherein at least one of R 1 to R 3 is an alkoxy group having 1 to 20 carbon atoms ,
- R 4 is an alkylene group having 1 to 20 carbon atoms
- x, y and z represent the molar ratio of repeating units constituting the structural unit x x y + z is 1,
- x is from 0.1 to 0.8
- y is 0.1 to 0.8
- z is from 0.1 to 0.8.
- R 1 to R 3 are each independently an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, at least one of R 1 to R 3 is an alkoxy group having 1 to 10 carbon atoms
- R 4 may be an alkylene group having 1 to 10 carbon atoms as a linking group connecting the silane group and the isocyanate group.
- the compound according to an embodiment of the present invention may be a modifier for a polymer, and specifically, may be a modifier for a conjugated diene polymer.
- the compound comprising the structural unit represented by the formula (1) according to the present invention can easily modify the conjugated diene polymer at a high modification rate by including a hydroxyl group and an alkoxysilane group, from the rubber composition and the same Abrasion resistance, viscoelastic properties, and the like of a molded article such as a manufactured tire can be improved.
- the compound may have a hydroxyl group and an alkoxysilane group in the molecule and thus exhibit high reactivity with respect to the active site of the conjugated diene-based polymer, thereby denaturing the conjugated diene-based polymer with high modification rate.
- the modified conjugated diene-based polymer having a functional group substituted by a modifier may improve affinity with the filler, thereby improving workability.
- the compound including the structural unit represented by Chemical Formula 1 may be prepared by polymerizing a saponified polyvinylacetate (PVA) and a monomer containing a silyl group, for example, saponified
- PVA polyvinylacetate
- the polyvinyl acetate may be prepared by reacting a monomer containing a silyl group with 0.1 mol to 10 mol equivalents, more specifically 1 mol to 2 mol equivalents, relative to the saponified polyvinyl acetate.
- the saponified polyvinyl acetate is prepared by saponification of polyvinylacetate, containing 1 mol% to 99 mol% of hydroxyl groups relative to the total number of moles, and a weight of 100 g / mol to 50,000 g / mol It may represent an average molecular weight.
- the saponified polyvinyl acetate may include 1 mol% to 80 mol% of hydroxyl groups relative to the total number of moles, and may exhibit a weight average molecular weight of 1000 g / mol to 30,000 g / mol.
- the compound including a structural unit represented by Formula 1 may be prepared through the following Scheme 1.
- the present invention also provides a modified conjugated diene-based polymer having excellent affinity with reinforcing fillers, particularly silica fillers, and having improved processability.
- the modified conjugated diene-based polymer according to an embodiment of the present invention is represented by the following formula (4) or (5), characterized in that it comprises a compound-derived functional group containing a structural unit represented by the formula (1).
- R 5 is an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an allyl group having 3 to 20 carbon atoms,
- R 7 is an alkyl group having 1 to 20 carbon atoms; C1 having at least one hetero atom selected from N, O and S, which is unsubstituted or substituted with mono-, di- or tri-substituted alkyl silyl groups having 1 to 20 carbon atoms or alkyl groups having 1 to 20 carbon atoms.
- P is a conjugated diene polymer chain
- a and b are each independently an integer of 1 or 2, a + b is 2 or 3,
- R 10 and R 13 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an allyl group having 3 to 20 carbon atoms,
- R 15 is an alkyl group having 1 to 20 carbon atoms; C1 having at least one hetero atom selected from N, O and S, which is unsubstituted or substituted with mono-, di- or tri-substituted alkyl silyl groups having 1 to 20 carbon atoms or alkyl groups having 1 to 20 carbon atoms.
- R 16 is a hetero atom of N, O or S, and when R 16 is O or S, R 15 is absent;
- P is a conjugated diene polymer chain
- c to f are each independently an integer of 0 to 3
- c + e is 1 to 5
- d + f is 1 to 3
- n and m are each independently an integer from 1 to 1000,
- A is a substituent represented by the following formula (6),
- R 1 and R 2 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or an allyl group having 3 to 20 carbon atoms,
- R 4 is an alkylene group having 1 to 20 carbon atoms
- x, y and z represent the molar ratio of repeating units constituting the structural unit x x y + z is 1,
- x is from 0.1 to 0.8
- y is 0.1 to 0.8
- z is from 0.1 to 0.8.
- R 1 , R 2 , R 5 , R 10 and R 13 are each independently an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, and R 4 is 1 carbon atom.
- An alkylene group of 10 to 10, and R 7 and R 15 are each independently an alkyl group having 1 to 10 carbon atoms;
- R 7 and R 15 may be each independently a substituent represented by formula (X 1 ) j -H 1- (X 2 ) h- j , wherein X 1 and X 2 are independently of each other An alkyl group, -NR'R “, -SiR'R” R “', [-Y-SiR'R” R “'] or [-YH 2- (Z) k- 1 ], wherein X 1 and X 2 May combine with each other to form a ring, wherein Y may be an alkylene group as a divalent linking group, and Z may independently represent a hydrogen atom, an alkyl group, -NR'R "or -SiR'R” R " Can be '.
- H 1 and H 2 may be independently of each other N or S
- R ', R "and R"' may be independently a hydrogen atom or an alkyl group
- h is the valence number of H 1
- k Is the valence number of H 2
- j may be an integer from 0 to 2.
- R 7 and R 15 may be a substituent represented by the following formulas (i) to (vii), in which TMS may represent trimethylsilane and R may represent an alkyl group.
- the modified conjugated diene-based polymer according to an embodiment of the present invention may be prepared by the manufacturing method described below, and includes a functional group derived from Formula 2 or Formula 3 described later and the structural unit represented by Formula 1 It may be to include a compound-derived functional group, specifically, may include a hydroxyl group and a silyl group.
- the bonding ratio of the hydroxyl group and the silyl group in the modified conjugated diene-based polymer may vary depending on the compound including the structural unit represented by Formula 1 used in the secondary reaction.
- the modified conjugated diene-based polymer has a hydroxyl group and a silyl group bonded to the polymer chain may be excellent in affinity with the filler, in particular silica filler. Accordingly, the physical properties of the rubber composition including the modified conjugated diene-based polymer may be excellent, and consequently, the tensile strength of a molded article, such as a tire, manufactured using the rubber composition may be excellent. Abrasion resistance and wet road resistance can be improved.
- the modified conjugated diene polymer may be a conjugated diene monomer homopolymer or a copolymer of a conjugated diene monomer and an aromatic vinyl monomer.
- the modified conjugated diene polymer is a copolymer of a conjugated diene monomer and an aromatic vinyl monomer
- the copolymer may be a random copolymer
- the "random copolymer” may indicate that the structural units constituting the copolymer are randomly arranged.
- the modified conjugated diene-based polymer when the modified conjugated diene-based polymer is a copolymer of a conjugated diene-based monomer and an aromatic vinyl monomer, the modified conjugated diene-based polymer may be 40% by weight or less, specifically 10 to 40% by weight of units derived from aromatic vinyl monomers. For example, the content may be 15 wt% to 40 wt%.
- the "derived unit” may refer to a component, a structure, or the substance itself resulting from a substance.
- the modified conjugated diene-based polymer may have a number average molecular weight of 1,000 g / mol to 5,000,000 g / mol, specifically 10,000 g / mol to 1,000,000 g / mol.
- the modified conjugated diene-based polymer may have a weight average molecular weight of 2,000 g / mol to 10,000,000 g / mol, specifically 20,000 g / mol to 2,000,000 g / mol.
- the weight average molecular weight and the number average molecular weight are polystyrene reduced molecular weights analyzed by gel permeation chromatography (GPC), respectively.
- the modified conjugated diene-based polymer may have a vinyl content of 5% by weight or more, specifically 10% by weight or more, more specifically 10% by weight to 50% by weight, and the glass transition temperature when the vinyl content is in the above range. Can be adjusted to an appropriate range, and when applied to a tire, not only the properties required for the tire such as driving resistance and braking force are excellent, but also it has an effect of reducing fuel consumption.
- the vinyl content represents the content of the 1,2-added conjugated diene monomer instead of 1,4-addition based on 100% by weight of the conjugated diene polymer composed of a monomer having a vinyl group or a conjugated diene monomer.
- the present invention also provides a method for producing the modified conjugated diene polymer.
- the production method according to an embodiment of the present invention is to polymerize a conjugated diene monomer or an aromatic vinyl monomer and a conjugated diene monomer in the presence of an organometallic compound in a hydrocarbon solvent to form an active polymer having an alkali metal bonded to at least one end thereof.
- R 5 , R 6 and R 8 Independently from each other an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or an allyl group having 3 to 20 carbon atoms, wherein at least one of R 5 , R 6 and R 8 is an alkoxy group having 1 to 20 carbon atoms,
- R 7 is an alkyl group having 1 to 20 carbon atoms; C1 having at least one hetero atom selected from N, O and S, which is unsubstituted or substituted with mono-, di- or tri-substituted alkyl silyl groups having 1 to 20 carbon atoms or alkyl groups having 1 to 20 carbon atoms.
- R 9 to R 14 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, or an allyl group having 3 to 20 carbon atoms, and at least one of R 9 to R 14 has 1 to C carbon atoms. 20 alkoxy groups,
- R 15 is an alkyl group having 1 to 20 carbon atoms; C1 having at least one hetero atom selected from N, O and S, which is unsubstituted or substituted with mono-, di- or tri-substituted alkyl silyl groups having 1 to 20 carbon atoms or alkyl groups having 1 to 20 carbon atoms.
- R 16 is a hetero atom of N, O or S, and when R 16 is O or S, R 15 is absent;
- n and m are each independently an integer from 1 to 1000,
- R 1 to R 3 are each independently an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms or an allyl group having 3 to 20 carbon atoms, wherein at least one of R 1 to R 3 is an alkoxy group having 1 to 20 carbon atoms ,
- R 4 is an alkylene group having 1 to 20 carbon atoms
- x, y and z represent the molar ratio of repeating units constituting the structural unit x x y + z is 1,
- x is from 0.1 to 0.8
- y is 0.1 to 0.8
- z is from 0.1 to 0.8.
- R 1 to R 3 are each independently an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, and at least one of R 1 to R 3 is an alkoxy group having 1 to 10 carbon atoms.
- R 4 may be an alkylene group having 1 to 10 carbon atoms.
- R 5 , R 6 and R 8 are Independently from each other an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, at least one of R 5 , R 6 and R 8 is an alkoxy group having 1 to 10 carbon atoms, and R 7 is an alkyl group having 1 to 10 carbon atoms ;
- An alkyl group having 1 to 10 carbon atoms or an alkyl group having 1 to 10 carbon atoms may be a substituted or unsubstituted alkyl silyl group having 1 to 10 carbon atoms and an alkyl group having 1 to 10 carbon atoms including N or S.
- R 9 to R 14 are each independently an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, at least one of R 9 to R 14 is an alkoxy group having 1 to 10 carbon atoms, R 15 is an alkyl group having 1 to 10 carbon atoms; An alkyl group having 1 to 10 carbon atoms or an alkyl group having 1 to 10 carbon atoms substituted or unsubstituted with an alkyl silyl group which is substituted or unsubstituted, an alkyl group having 1 to 10 carbon atoms including N or S, and R 16 is N And n and m may be each independently an integer of 1 to 50.
- Step 1 is a step for preparing an active polymer having an alkali metal bonded to at least one end thereof, and may be performed by polymerizing a conjugated diene monomer or a conjugated diene monomer and an aromatic vinyl monomer in the presence of an organometallic compound in a hydrocarbon solvent.
- the polymerization of step 1 may be one using a conjugated diene monomer alone or a conjugated diene monomer and an aromatic vinyl monomer together as described above. That is, the polymer prepared by the above production method according to an embodiment of the present invention may be a homopolymer derived from a conjugated diene monomer 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 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 conjugated diene-based monomer When the modified conjugated diene-based polymer is a copolymer derived from a conjugated diene-based monomer and an aromatic vinyl-based monomer, the conjugated diene-based monomer has a unit derived from conjugated diene monomer in the prepared modified conjugated diene-based polymer, specifically, May be used in an amount to include from 60% to 90% by weight, more specifically from 60% to 85% 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 organometallic compound may be used in an amount of 0.01 mmol to 10 mmol based on 100 g of the total monomer.
- the organometallic compound is not particularly limited, but for example, methyllithium, ethyllithium, propyllithium, n-butyllithium, s-butyllithium, t-butyllithium, hexyllithium, n-decyllithium, t-octylithium, phenyl Lithium, 1-naphthyllithium, n-eicosilium, 4-butylphenyllithium, 4-tolyllithium, cyclohexyllithium, 3,5-di-n-heptylcyclohexyllithium, 4-cyclopentyllithium, naphthyl It may be one or more selected from the group consisting of sodium, naphthyl potassium, lithium alkoxide, sodium alkoxide, potassium alkoxide, lithium sulfonate, sodium sulfonate, potassium sulfonate, lithium amide, sodium amide, potassium amide, lithium
- the polymerization of step 1 may be performed by further adding a polar additive as needed, the polar additive may be added to 0.001 parts by weight to 10 parts by weight based on 100 parts by weight of the total monomer. Specifically, the content may be added in an amount of 0.001 part by weight to 1 part by weight, more specifically 0.005 part by weight to 0.1 part by weight, based on 100 parts by weight of the total monomers.
- 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.
- step 1 may be carried out through adiabatic polymerization, or isothermal polymerization.
- the adiabatic polymerization refers to a polymerization method including the step of polymerizing with a self-heating reaction without adding heat after the addition of the multifunctional anion polymerization initiator, and the isothermal polymerization is optionally after adding the polyfunctional anion polymerization initiator It refers to a polymerization method in which the temperature of the polymer is kept constant by applying heat or taking away heat.
- 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 for firstly reacting the active polymer with a compound represented by Formula 2 or 3 to bind a functional group derived from the compound represented by Formula 2 or 3 to a polymer chain.
- the compound represented by Formula 2 or Formula 3 may be used in a ratio of 0.01 mol to 5 mol with respect to 1 mol of the organometallic compound.
- Step 3 is a step for preparing a modified conjugated diene-based polymer in which the compound-derived functional group including the compound-derived functional group represented by Formula 2 or Formula 3 and the structural unit represented by Formula 1 is bonded. It is a step of secondary reaction with a compound containing a structural unit represented by the formula (1).
- the denaturant including the structural unit represented by Formula 1 may be combined with the unreacted alkoxy group in the polymer chain after the first reaction, and used in a ratio of 0.01 mol to 5 mol with respect to 1 mol of the organometallic compound. It may be.
- the first and second reactions of steps 2 and 3 are a modification reaction for introducing a functional group into the polymer
- the primary reaction may be a coupling reaction or a modification reaction.
- the secondary reaction may be a denaturation reaction.
- Each reaction may be performed for 10 minutes to 5 hours in a temperature range of 10 °C to 120 °C.
- the secondary reaction may be carried out by adding a denaturant containing the structural unit represented by the formula (1) in the step of recovering the polymer produced after the first reaction.
- the production 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 3 above.
- 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 may be a modified conjugated diene-based polymer containing 10 wt% or more, specifically 10 wt% to 100 wt%, more specifically 20 wt% to 90 wt%. have. If the content of the modified conjugated diene-based polymer is less than 10% by weight, the effect of improving the wear resistance and 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 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 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), solution polymerization styrene-butadiene copolymer (SSBR), 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 (isoopre
- the rubber composition according to an embodiment of the present invention may include 0.1 to 200 parts by weight of a filler based on 100 parts by weight of the modified conjugated diene-based polymer, the filler is a silica-based filler, carbon black-based filler Or a combination thereof.
- the silica-based filler when used as the filler, dispersibility is greatly improved, and the hysteresis loss is greatly reduced by combining the silica particles of the filler with the modified conjugated diene-based polymer terminal.
- the rubber composition according to an embodiment of the present invention may be used with a silane coupling agent to improve the reinforcement and low heat generation when using a silica-based filler as a filler.
- 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 in an active site is used as a 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.
- 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 based on 100 parts by weight of the rubber component, for example, 10 parts by weight to 100 parts by weight, specifically 20 parts by weight to 80 parts by weight, based on 100 parts by weight of the conjugated diene polymer. May be included. If, when the process oil is included in the content, it is possible to prevent the degradation of the tensile strength, low heat generation (low fuel efficiency) 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 made using the rubber composition.
- the tire according to an embodiment of the present invention may include a tire or a tire tread.
- x is 0.2, y is 0.1 and z is 0.7.
- x is 0.2
- y is 0.1
- z is 0.7.
- a modified styrene-butadiene copolymer was prepared in the same manner as in Example 1 except that the modification reaction was performed using the compound prepared in Preparation Example 2 instead of the compound prepared in Preparation Example 1.
- a modified styrene-butadiene copolymer was prepared in the same manner as in Example 1 except that the modification reaction was performed using the compound prepared in Preparation Example 3 instead of the compound prepared in Preparation Example 1.
- the polymerization was stopped using ethanol, and 45 ml of a solution in which 0.3 wt% of BHT (butylated hydroxytoluene), an antioxidant, was dissolved in hexane was added.
- BHT butylated hydroxytoluene
- the resulting polymer was poured into hot water heated with steam, stirred to remove the solvent, and then roll dried to remove the residual solvent and water to prepare a styrene-butadiene copolymer.
- the dichlorodimethylsilane is used to obtain a styrene-butadiene copolymer having a molecular weight similar to that of Example 1.
- the styrene-derived unit vinyl content, weight average molecular weight (Mw), The number average molecular weight (Mn), polydispersity index (PDI), and Mooney viscosity (MV) were measured, respectively.
- Mw weight average molecular weight
- Mn number average molecular weight
- PDI polydispersity index
- MV Mooney viscosity
- SM Styrene derived units
- the weight average molecular weight (Mw) and the number average molecular weight (Mn) of each copolymer were measured by gel permeation chromatograph (GPC) analysis under 40 conditions. At this time, the column (column) was used in combination with two bags of PLgel Olexis of Polymer Laboratories Co., Ltd. and one PLgel mixed-C column, all of the newly replaced column was a mixed bed column. In addition, PS (polystyrene) was used as the GPC standard material in the molecular weight calculation.
- 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.
- the Mooney viscosity of each copolymer was measured by MV-2000 (Alpha Technologies Co., Ltd.) for 15 minutes or more of each sample weight 15g or more for 1 minute and then at 100 °C for 4 minutes.
- the styrene-butadiene copolymer of Comparative Example 1 was prepared through the same conditions as the modified styrene-butadiene copolymer of Examples 1 to 4, except that the modification was not performed.
- Table 1 shows that the modified styrene-butadiene copolymer of Example 4 has an increase in Mooney viscosity compared to the styrene-butadiene copolymer of Comparative Example 1 shows that the modified styrene-butadiene copolymer of Examples 1 to 4 It indicates that denaturation has been made.
- Each rubber composition was prepared through a first stage kneading process and a second stage kneading process. At this time, the amount of the substance except the modified conjugated diene copolymer is shown based on 100 parts by weight of the modified conjugated diene copolymer.
- the first stage kneading 137.5 parts by weight of each modified conjugated diene copolymer, 70 parts by weight of silica, bis (3-triethoxysilylpropyl) tetrasulfate as a silane coupling agent using a half-variety mixer equipped with a temperature controller.
- Tensile properties were prepared in accordance with the tensile test method of ASTM 412 and measured the tensile strength at the cutting of the test piece and the tensile stress (300% modulus) at 300% elongation. Specifically, tensile properties were measured at a rate of 50 cm / min at room temperature using a Universal Test Machin 4204 (Instron Co., Ltd.) tensile tester to obtain tensile strength and tensile stress at 300% elongation.
- the viscoelastic properties were measured by using a dynamic mechanical analyzer (TA, Inc.) at a frequency of 10 Hz in a torsion mode and varying the strain at each measurement temperature (-60 to 60 ° C.).
- TA, Inc. dynamic mechanical analyzer
- the modified styrene-butadiene copolymer of Examples 1 to 4 prepared using the compound prepared in Preparation Example 1 or Preparation Example 2 according to an embodiment of the present invention as a modifier It was confirmed that the tensile properties and viscoelasticity of the rubber composition to be superior to the rubber composition comprising the copolymers of Comparative Examples 1 and 2.
- the rubber composition comprising the modified styrene-butadiene copolymer of Examples 1 to 4 prepared by using the compound prepared in Preparation Example 1 or Preparation Example 2 according to an embodiment of the present invention as a modifier While the tensile strength and 300% tensile stress are significantly increased compared to the rubber composition comprising the styrene-butadiene copolymer of Comparative Example 1, the Tan ⁇ value at 0 ° C. is increased up to a level of 116%, and Tan at 60 ° C. It was confirmed that the ⁇ value decreased to the lowest 64% level.
- the modified styrene-butadiene copolymer of Comparative Example 2 and the modified styrene- of Example 1 to 4 prepared by performing a modification reaction using only one modification reaction using a compound corresponding to Formula 2 of the present invention.
- the modified styrene-butadiene copolymers of Examples 1 to 4 showed significantly increased tensile strength and 300% tensile stress at 0 ° C, compared to the modified styrene-butadiene copolymers of Comparative Example 2. It was confirmed that the Tan ⁇ value of increased up to a level of 108%, and the Tan ⁇ value at 60 ° C decreases to the lowest 75% level.
- the modified styrene-butadiene copolymer prepared using the compound containing the structural unit represented by Formula 1 according to one embodiment of the present invention as a modifier is unmodified styrene-butadiene copolymer and other modified styrene-butadiene Compared to the copolymer, the wet road surface has excellent resistance and rolling resistance, and shows that fuel efficiency may be high.
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Abstract
Description
구분 | 스티렌(wt%) | 비닐(wt%) | GPC | 무니점도(MV) | ||
Mw(g/mol, X104) | Mn(g/mol, X104) | PDI | ||||
실시예 1 | 27.1 | 43.1 | 30 | 20 | 1.5 | 50 |
실시예 2 | 26.5 | 42.5 | 34 | 22 | 1.6 | 55 |
실시예 3 | 27.3 | 44.1 | 31 | 21 | 1.5 | 53 |
실시예 4 | 27.3 | 44.1 | 31 | 21 | 1.5 | 53 |
비교예 1 | 26.2 | 43.1 | 28 | 20 | 1.4 | 47 |
비교예 2 | 27.1 | 43.0 | 29 | 18 | 1.6 | 45 |
구분 | 실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 비교예 1 | 비교예 2 | |
인장특성 | 인장강도(kgf/cm2) | 135 | 130 | 135 | 140 | 120 | 128 |
300% 인장응력(kgf/cm2) | 125 | 122 | 127 | 130 | 100 | 110 | |
점탄성 | Tan δ at 0℃(Index) | 1.39 | 1.32 | 1.35 | 1.42 | 1.29 | 1.31 |
Tan δ at 60℃(Index) | 0.055 | 0.060 | 0.055 | 0.051 | 0.080 | 0.068 |
Claims (18)
- 하기 화학식 1로 표시되는 구성단위를 포함하는 화합물:[화학식 1]상기 화학식 1에서,R1 내지 R3은 서로 독립적으로 탄소수 1 내지 20의 알킬기, 탄소수 1 내지 20의 알콕시기 또는 탄소수 3 내지 20의 알릴기이되, R1 내지 R3 중 적어도 하나는 탄소수 1 내지 20의 알콕시기이고,R4는 탄소수 1 내지 20의 알킬렌기이고,x, y 및 z는 서로 독립적으로 구성단위를 구성하는 반복 단위체의 몰비율을나타내는 것으로 x+y+z는 1이고,x는 0.1 내지 0.8이고,y는 0.1 내지 0.8이며,z는 0.1 내지 0.8이다.
- 청구항 1에 있어서,상기 화학식 1에서,R1 내지 R3은 서로 독립적으로 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알콕시기이되, R1 내지 R3 중 적어도 하나는 탄소수 1 내지 10의 알콕시기고,R4는 탄소수 1 내지 10의 알킬렌기인 것인 화합물.
- 청구항 1에 있어서,상기 화합물은 공액디엔계 중합체용 변성제인 것인 화합물.
- 청구항 1에 기재된 화합물 유래 작용기를 포함하는 하기 화학식 4 또는 화학식 5로 표시되는 변성 공액디엔계 중합체:[화학식 4]상기 화학식 4에서,R5는 탄소수 1 내지 20의 알킬기, 탄소수 1 내지 20의 알콕시기 또는 탄소수 3 내지 20의 알릴기이고,R7은 탄소수 1 내지 20의 알킬기이거나; 탄소수 1 내지 20의 알킬기 또는 탄소수 1 내지 20의 알킬기로 1치환, 2치환 또는 3치환된 알킬 실릴기로 치환 또는 비치환되고, N, O 및 S 중에서 선택되는 적어도 하나의 헤테로 원자를 포함하는 탄소수 1 내지 20의 알킬기 또는 알킬 실릴기이고,P는 공액디엔계 중합체 사슬이고,a 및 b는 서로 독립적으로 1 또는 2의 정수이되, a+b는 2 또는 3이고,[화학식 5]상기 화학식 5에서,R10 및 R13은 서로 독립적으로 탄소수 1 내지 20의 알킬기, 탄소수 1 내지 20의 알콕시기 또는 탄소수 3 내지 20의 알릴기이고,R15는 탄소수 1 내지 20의 알킬기이거나; 탄소수 1 내지 20의 알킬기 또는 탄소수 1 내지 20의 알킬기로 1치환, 2치환 또는 3치환된 알킬 실릴기로 치환 또는 비치환되고, N, O 및 S 중에서 선택되는 적어도 하나의 헤테로 원자를 포함하는 탄소수 1 내지 20의 알킬기 또는 알킬 실릴기이고,R16은 N, O 또는 S의 헤테로 원자이되, R16이 O 또는 S인 경우 R15는 존재하지 않고,P는 공액디엔계 중합체 사슬이고,c 내지 f는 서로 독립적으로 0 내지 3의 정수이되, c+e는 1 내지 5이고, d+f는 1 내지 3이고,n 및 m은 서로 독립적으로 1 내지 1000의 정수이며,상기 화학식 4 및 화학식 5에서, A는 하기 화학식 6으로 표시되는 치환기이며,[화학식 6]상기 화학식 6에서,R1 및 R2는 서로 독립적으로 탄소수 1 내지 20의 알킬기, 탄소수 1 내지 20의 알콕시기 또는 탄소수 3 내지 20의 알릴기이고,R4는 탄소수 1 내지 20의 알킬렌기이고,x, y 및 z는 구성단위를 구성하는 반복 단위체의 몰비율을 나타내는 것으로 x+y+z는 1이고,x는 0.1 내지 0.8이고,y는 0.1 내지 0.8이며,z는 0.1 내지 0.8이다.
- 청구항 4에 있어서,상기 화학식 4 내지 화학식 6에서,R1, R2, R5, R10 및 R13은 서로 독립적으로 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알콕시기이고,R4는 탄소수 1 내지 10의 알킬렌기이고,R7 및 R15는 서로 독립적으로 탄소수 1 내지 10의 알킬기이거나; 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알킬기로 1치환, 2치환 또는 3치환된 알킬 실릴기로 치환 또는 비치환되고, N 또는 S를 포함하는 탄소수 1 내지 10의 알킬기이고,R16은 N이며,n 및 m은 서로 독립적으로 1 내지 50의 정수인 것인 변성 공액디엔계 중합체.
- 청구항 4에 있어서,상기 중합체는 방향족 비닐계 단량체 유래 단위를 40 중량% 이하로 포함하는 것인 변성 공액디엔계 중합체.
- 청구항 4에 있어서,상기 중합체는 수평균분자량이 1,000 g/mol 내지 5,000,000 g/mol인 것인 변성 공액디엔계 중합체.
- 청구항 4에 있어서,상기 중합체는 비닐 함량이 5 중량% 이상인 것인 변성 공액디엔계 중합체.
- 1) 탄화수소 용매 중에서, 유기금속 화합물 존재 하 공액디엔계 단량체 또는 방향족 비닐계 단량체 및 공액디엔계 단량체를 중합하여 적어도 일 말단에 유기금속이 결합된 활성 중합체를 제조하는 단계;2) 상기 활성 중합체를 하기 화학식 2 또는 화학식 3으로 표시되는 화합물과 1차 반응시키는 단계; 및3) 상기 1차 반응 후, 하기 화학식 1로 표시되는 구성단위를 포함하는 화합물과 2차 반응시키는 단계를 포함하는 청구항 4에 기재된 변성 공액디엔계 중합체의 제조방법:[화학식 2]상기 화학식 2에서,R5, R6 및 R8은 서로 독립적으로 탄소수 1 내지 20의 알킬기, 탄소수 1 내지 20의 알콕시기 또는 탄소수 3 내지 20의 알릴기이되, R5, R6 및 R8 중 적어도 하나는 탄소수 1 내지 20의 알콕시기이고,R7은 탄소수 1 내지 20의 알킬기이거나; 탄소수 1 내지 20의 알킬기 또는 탄소수 1 내지 20의 알킬기로 1치환, 2치환 또는 3치환된 알킬 실릴기로 치환 또는 비치환되고, N, O 및 S 중에서 선택되는 적어도 하나의 헤테로 원자를 포함하는 탄소수 1 내지 20의 알킬기 또는 알킬 실릴기이고,[화학식 3]상기 화학식 3에서, R9 내지 R14는 서로 독립적으로 탄소수 1 내지 20의 알킬기, 탄소수 1 내지 20의 알콕시기 또는 탄소수 3 내지 20의 알릴기이되, R9 내지 R14 중 적어도 하나는 탄소수 1 내지 20의 알콕시기이고,R15는 탄소수 1 내지 20의 알킬기이거나; 탄소수 1 내지 20의 알킬기 또는 탄소수 1 내지 20의 알킬기로 1치환, 2치환 또는 3치환된 알킬 실릴기로 치환 또는 비치환되고, N, O 및 S 중에서 선택되는 적어도 하나의 헤테로 원자를 포함하는 탄소수 1 내지 20의 알킬기 또는 알킬실릴기이고,R16은 N, O 또는 S의 헤테로 원자이되, R16이 O 또는 S인 경우 R15는 존재하지 않고,n 및 m은 서로 독립적으로 1 내지 1000의 정수이고,[화학식 1]상기 화학식 1에서,R1 내지 R3는 서로 독립적으로 탄소수 1 내지 20의 알킬기, 탄소수 1 내지 20의 알콕시기 또는 탄소수 3 내지 20의 알릴기이되, R1 내지 R3 중 적어도 하나는 탄소수 1 내지 20의 알콕시기이고,R4는 탄소수 1 내지 20의 알킬렌기이고,x, y 및 z는 구성단위를 구성하는 반복 단위체의 몰비율을 나타내는 것으로 x+y+z는 1이고,x는 0.1 내지 0.8이고,y는 0.1 내지 0.8이며,z는 0.1 내지 0.8이다.
- 청구항 9에 있어서,상기 화학식 1에서,R1 내지 R3는 서로 독립적으로 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알콕시기이되, R1 내지 R3 중 적어도 하나는 탄소수 1 내지 10의 알콕시기이고,R4는 탄소수 1 내지 10의 알킬렌기인 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 9에 있어서,상기 화학식 2에서,R5, R6 및 R8은 서로 독립적으로 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알콕시기이되, R5, R6 및 R8 중 적어도 하나는 탄소수 1 내지 10의 알콕시기이고,탄소수 1 내지 10의 알킬기이거나; 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알킬기로 1치환, 2치환 또는 3치환된 알킬 실릴기로 치환 또는 비치환되고, N 또는 S를 포함하는 탄소수 1 내지 10의 알킬기인 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 9에 있어서,상기 화학식 3에서,R9 내지 R14는 서로 독립적으로 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알콕시기이되, R9 내지 R14 중 적어도 하나는 탄소수 1 내지 10의 알콕시기이고,R15는 탄소수 1 내지 10의 알킬기이거나; 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알킬기로 1치환, 2치환 또는 3치환된 알킬 실릴기로 치환 또는 비치환되고, N 또는 S를 포함하는 탄소수 1 내지 10의 알킬기이고,R16은 N이고,n 및 m은 서로 독립적으로 1 내지 50의 정수인 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 9에 있어서,상기 유기금속 화합물은 단량체 총 100 g을 기준으로 0.01 mmol 내지 10 mmol로 사용하는 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 9에 있어서,상기 유기금속 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, 리튬 이소프로필아미드로 이루어진 군으로부터 선택된 1종 이상인 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 9에 있어서,상기 단계 1)의 중합은 극성 첨가제를 더 첨가하여 수행하는 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 15에 있어서,상기 극성 첨가제는 단량체 총 100 중량부 대비 0.001 중량부 내지 10 중량부로 첨가하는 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 9에 있어서,상기 화학식 2 또는 화학식 3으로 표시되는 화합물은 유기금속 화합물 1 mol 대비 0.01 mol 내지 5 mol이 되는 비율로 사용하는 것인 변성 공액디엔계 중합체의 제조방법.
- 청구항 9에 있어서,상기 화학식 1로 표시되는 화합물은 유기금속 화합물 1 mol 대비 0.01 mol 내지 5 mol이 되는 비율로 사용하는 것인 변성 공액디엔계 중합체의 제조방법.
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