WO2016099021A1 - 신규 음이온 중합 개시제 및 이를 이용한 공역디엔계 공중합체의 제조방법 - Google Patents
신규 음이온 중합 개시제 및 이를 이용한 공역디엔계 공중합체의 제조방법 Download PDFInfo
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- WO2016099021A1 WO2016099021A1 PCT/KR2015/010863 KR2015010863W WO2016099021A1 WO 2016099021 A1 WO2016099021 A1 WO 2016099021A1 KR 2015010863 W KR2015010863 W KR 2015010863W WO 2016099021 A1 WO2016099021 A1 WO 2016099021A1
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- 0 C*c1c(*)c(*(C)C*(C)N(*)*)c(*)c(*)c1* Chemical compound C*c1c(*)c(*(C)C*(C)N(*)*)c(*)c(*)c1* 0.000 description 3
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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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- 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
- C08F236/10—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 with vinyl-aromatic monomers
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/01—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to acyclic carbon atoms
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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
- C08C19/26—Incorporating metal atoms into the molecule
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F112/00—Homopolymers 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
- C08F112/02—Monomers containing only one unsaturated aliphatic radical
- C08F112/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F112/06—Hydrocarbons
- C08F112/08—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
- C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F136/02—Homopolymers 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
- C08F136/04—Homopolymers 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
- C08F136/06—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
- C08F2/00—Processes of polymerisation
- C08F2/60—Polymerisation by the diene synthesis
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
Definitions
- the present invention relates to a novel anionic polymerization initiator, and a method for producing a conjugated diene copolymer using the same.
- alkyllithium is used as an anionic polymerization initiator when a copolymer of a conjugated diene monomer and an aromatic vinyl monomer is prepared by conventional anionic polymerization.
- a polar solvent such as tetrahydrofuran or dimethyl ether is used to prevent aggregation of the initiator and to increase reactivity.
- JP 2746053 B2 is a poly (p-tert-butoxy styrene) characterized in that sec-butyllithium is used as a polymerization initiator, and a mixed solvent in which tetrahydrofuran is added as a polymerization solvent is used. butoxy styrene)) is disclosed.
- the manufacturing method has a disadvantage in that additional equipment for the separation process is required in the normal hexane recovery process due to the addition of the polar solvent.
- butyllithium has a problem of generating side reactions such as branching by extracting H in the polymer backbone due to high anionic reactivity.
- the present invention prepares an anionic polymerization initiator which does not need to be mixed with a separate polar solvent when used for initiating anionic polymerization or can reduce the use of polar additives, and prepares a conjugated diene copolymer using this as a monomer initiator for anionic polymerization. It is an object to provide a method.
- the present invention provides an anionic polymerization initiator which is a reaction product of a compound containing an alkyl chain having a tertiary amino functional group represented by the following formula (1) and an organometallic compound.
- R 1 to R 5 are independently hydrogen or a hydrocarbon group having 1 to 20 carbon atoms, two substituents may form one aliphatic and aromatic ring, and at least two R 1 to R 5 are alkyl groups. ego; R 6 to R 7 may be an aliphatic hydrocarbon group having 1 to 14 carbon atoms or an aromatic hydrocarbon group having 5 to 14 carbon atoms, and when n is 2 or more, two substituents may form one aliphatic or aromatic ring; n is 1 to 12.
- the present invention also provides a method for producing a conjugated diene copolymer using an anionic polymerization initiator which is a reaction product of a compound containing an alkyl chain having a tertiary amino functional group represented by Formula 1 with an organometallic compound.
- the present invention it is possible to solve the problem of mixing a polar solvent, which is a problem of conventional anionic polymerization, and to expect high activity due to the high apolar solvent dissociation property of the initiator.
- novel anionic polymerization initiator according to the present invention can limit the additional use of the polar solvent because the nitrogen atom-containing alkyl group capable of coordinating to the lithium cation is chemically linked to the structure of the initiator.
- novel anionic polymerization initiator according to the present invention can suppress side reactions by using a relatively low and bulky Benzyl anion.
- the present invention it is possible to solve the problem of mixing a polar solvent, which is a problem of conventional anionic polymerization, and to expect high activity due to the high apolar solvent dissociation property of the initiator.
- a polar solvent which is a problem of conventional anionic polymerization
- the solubility in the nonpolar solvent is increased to control the molecular weight and the molecular weight distribution (Mw / Mn, MWD) of the polymer.
- According to the present invention can solve the problem of the solvent separation process due to mixing with a polar solvent having an ether form such as tetrahydrofuran or dimethyl ether.
- the nitrogen atom-containing initiator of the present invention has been selected from the viewpoint of rubber modification of introducing a silica-affinity polar group into conjugated diene rubber for the purpose of improving dispersion with silica.
- the conjugated diene rubber used can be expected to improve the dispersibility of the reinforcing material silica.
- the present invention provides an anionic polymerization initiator which is a reaction product of a compound comprising an alkyl chain having a tertiary amino functional group represented by the following formula (1) and an organometallic compound:
- R 1 to R 5 are independently hydrogen or a hydrocarbon group having 1 to 20 carbon atoms, two substituents may form one aliphatic and aromatic ring, and at least two R 1 to R 5 are alkyl groups. ego; R 6 to R 7 may be an aliphatic hydrocarbon group having 1 to 14 carbon atoms or an aromatic hydrocarbon group having 5 to 14 carbon atoms, and when n is 2 or more, two substituents may form one aliphatic or aromatic ring; n is 1 to 12.
- the compound represented by Formula 1 is an organic compound containing a nitrogen atom-containing dialkyl group.
- At least two R 1 to R 5 in the general formula (1) is an alkyl group, so that the solubility in non-polar solvents such as normal hexane mainly used in anionic polymerization increases, so that it is easy to use as a polymerization initiator.
- R 1 , R 3 , R 5 are methyl, ethyl, propyl, more preferably methyl.
- the compound represented by Formula 1 may be 1- (diethylaminomethyl) -2,4,6-trimethylbenzene or 1- (diisopropylaminomethyl) -2,4,6-trimethylbenzene have.
- the compound represented by Chemical Formula 1 may be an alkylbenzene including tertiary amine synthesized by adding a primary or secondary amine to a bromoalkylbenzene with a base, as illustrated in Scheme 1 below. Thereafter, the alkylbenzene containing the tertiary amine is reacted with an organolithium compound such as n-butyllithium to prepare an initiator of high purity without a separate purification process.
- an organolithium compound such as n-butyllithium
- the organometallic compound may be at least one selected from the group consisting of an organoalkali metal compound, an organolithium compound, an organosodium compound, an organopotassium compound, an organorubidium compound, and an organocesium compound.
- the organometallic compound may be an organolithium compound such as methyllithium, ethyllithium, isopropyllithium, n-butyllithium, sec-butyllithium, tert-butyllithium, n-decyllithium, tert-octylithium, phenyllithium, Selected from the group consisting of 1-naphthyllithium, n-eicosilium, 4-butylphenyllithium, 4-tolyllithium, cyclohexyllithium, 3,5-di-n-heptylcyclohexyllithium and 4-cyclopentyllithium It may be one or more.
- the organometallic compound may be alkyl lithium, n-butyllithium, sec-butyllithium, or a mixture thereof.
- the organometallic compound is a group consisting of naphthyl sodium, naphthyl potassium, lithium alkoxide, sodium alkoxide, potassium alkoxide, lithium sulfonate, sodium sulfonate, potassium sulfonate, lithium amide, sodium amide and potassium amide It may be one or more selected from, and may also be used in combination with other organometallic compounds.
- anionic polymerization initiator of the present invention is chemically linked to the structure of the initiator, a monodialkylamino group capable of coordinating to a lithium cation, there is no need to add a polar solvent during anionic polymerization, thereby limiting the additional use of the polar solvent.
- the amine group is chemically linked to the structure of the initiator, high activity can be expected due to the high dissociation property to nonpolar solvents such as normal hexane.
- the present invention also provides a method for producing a conjugated diene polymer using the anionic polymerization initiator.
- the present invention is a reaction of a compound comprising an alkylene chain having a tertiary amino functional group represented by the following formula (1) in a conjugated diene monomer, or a conjugated diene monomer and an aromatic vinyl monomer in an organic metal compound
- a method for preparing a conjugated diene-based polymer comprising the step of polymerizing using an anionic polymerization initiator as a product:
- R 1 to R 5 are independently hydrogen or a hydrocarbon group having 1 to 20 carbon atoms, two substituents may form one aliphatic and aromatic ring, and at least two R 1 to R 5 are alkyl groups. ego; R 6 to R 7 may be an aliphatic hydrocarbon group having 1 to 14 carbon atoms or an aromatic hydrocarbon group having 5 to 14 carbon atoms, and when n is 2 or more, two substituents may form one aliphatic or aromatic ring; n is 1 to 12.
- the conjugated diene monomer is, for example, 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, isoprene and 2-phenyl-1,3- It may be at least one selected from the group consisting of butadiene.
- aromatic vinyl monomer examples include styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, 4- (p-methylphenyl) styrene, It may be one or more selected from the group consisting of 1-vinyl-5-hexyl naphthalene, and may be styrene or ⁇ -methylstyrene as another example.
- the solvent is not particularly limited as long as it is a solvent that can be applied to homopolymerization or copolymerization of a conjugated diene monomer, and examples thereof include hydrocarbons or n-pentane, n-hexane, n-heptane, isooctane, cyclohexane, toluene, benzene and It may be at least one selected from the group consisting of xylene.
- the reaction product of the compound and the organometallic compound containing an alkyl chain having a tertiary amino functional group represented by the formula (1) is 0.01 to 10 mmol, 0.05 to based on a total of 100g of the monomer 5 mmol, 0.1-2 mmol or 0.1-1 mmol.
- an optimal polymer can be made.
- the polymer production method may be carried out by further adding a polar additive during polymerization.
- the reason why the polar additive is further added is that the polar additive controls the reaction rate of the conjugated diene monomer and the aromatic vinyl monomer.
- the polar additive may be a base or an ether, an amine or a mixture thereof, and specifically, tetrahydrofuran, ditetrahydroprilpropane, diethyl ether, cycloamyl ether, dipropyl ether, ethylene dimethyl ether, ethylene dimethyl ether With diethylene glycol, dimethyl ether, tert-butoxyethoxyethane bis (2-dimethylaminoethyl) ether, (dimethylaminoethyl) ethyl ether, trimethylamine, triethylamine, tripropylamine, and tetramethylethylenediamine It may be selected from the group consisting of, preferably ditetrahydropropylpropane, triethylamine or tetramethylethylenediamine.
- the polar additive may be used in 0.001 to 50 g, 0.001 to 10 g, 0.005 to 1 g, or 0.005 to 0.1 g based on a total of 100 g of the monomer to be added.
- the polar additive is 0.001 to 10 g, 0.005 to 1 g, based on a total of 1 mmol of the reaction product of a compound containing an alkyl chain having a tertiary amino functional group represented by Formula 1 and an organometallic compound Or 0.005 to 0.1 g.
- block copolymers are generally easy to be produced due to their difference in reaction rate, but when the polar additive is added, the reaction rate of the aromatic vinyl monomer having a slow reaction rate is increased. This has the effect of inducing a microstructure of the corresponding copolymer, for example a random copolymer.
- the polymerization may be, for example, anionic polymerization, and specifically, the polymerization may be a living anion polymerization in which an active terminal is obtained by a growth reaction by anions.
- the polymerization may be, for example, elevated temperature polymerization or constant temperature polymerization.
- the elevated temperature polymerization means a polymerization method including a step of increasing the reaction temperature by optionally applying heat after adding a reaction product of a compound containing an alkyl chain having a tertiary amino functional group represented by Chemical Formula 1 with an organometallic compound.
- the constant temperature polymerization refers to a polymerization method in which no heat is optionally added after the reaction product of a compound containing an alkyl chain having a tertiary amino functional group represented by Chemical Formula 1 and an organometallic compound is added thereto.
- the polymerization temperature may be, for example, -20 to 200 °C, 0 to 150 °C or 10 to 120 °C.
- the method for producing the conjugated diene-based polymer may be, for example, a batch polymerization method or a continuous polymerization method including one or more reactors.
- conjugated diene polymer prepared according to the above-described method for producing a conjugated diene polymer.
- the conjugated diene-based polymer may have a number average molecular weight (Mn) of 1,000 to 2,000,000 g / mol, preferably 10,000 to 1,000,000 g / mol, more preferably 100,000 to 1,000,000 g / mol.
- Mn number average molecular weight
- the modification reaction may have the best or good physical properties.
- the conjugated diene-based polymer may have a molecular weight distribution (Mw / Mn, MWD) of 1 to 10, preferably 1.1 to 5, more preferably 1.3 to 3.
- Mw / Mn, MWD molecular weight distribution
- the conjugated diene-based polymer may have a vinyl content of 5% by weight or more, preferably 10% by weight or more, more preferably 15 to 70% by weight.
- the vinyl content means the content of a monomer having a vinyl group, or the content of 1,2-added conjugated diene monomer rather than 1,4-addition based on 100% by weight of the conjugated diene monomer.
- the glass transition temperature of the polymer is increased to not only satisfy the properties required for the tire such as running resistance and braking force when applied to the tire, but also reduce fuel consumption. It has the effect of reducing it.
- An initiator in the light yellow solution state was prepared in the same manner as in the second step of Synthesis Example 1, except that 1- (diisopropylaminomethyl) -2,4,6-trimethylbenzene was used as the reactant.
- a polymer was prepared in the same manner as in Example 1 except for using butadiene (7.5 g) and normal hexane (42.5 g) instead of styrene.
- the analysis results for the polymer are shown in Table 1 below.
- a polymer was prepared in the same manner as in Example 1 except that styrene (3.0 g), butadiene (7.5 g) and normal hexane (42.5 g) were used.
- the analysis results for the polymer are shown in Table 1 below.
- a polymer was prepared in the same manner as in Example 1, except that 2.5 M n-butyllithium hexane solution (0.2 mL, 0.5 mmol) was used as the initiator.
- the analysis results for the polymer are shown in Table 1 below.
- a polymer was prepared in the same manner as in Example 1 except that 2.5 M n-butyllithium hexane solution (0.2 mL, 0.5 mmol) and butadiene (7.5 g) and normal hexane (42.5 g) were used instead of styrene.
- the analysis results for the polymer are shown in Table 1 below.
- the polymer was prepared in the same manner as in Example 1 except that 2.5 M n-butyllithium hexane solution (0.2 mL, 0.5 mmol), styrene (3.0 g), butadiene (7.5 g) and normal hexane (42.5 g) were used as an initiator. Prepared. The analysis results for the polymer are shown in Table 1 below.
- a polymer was prepared in the same manner as in Example 1, except that an initiator (0.5 mmol on a lithium basis) prepared as Comparative Comparative Example 1 was used as an initiator.
- the analysis results for the polymer are shown in Table 1 below.
- the polymer was prepared in the same manner as in Example 1, except that butadiene (7.5 g) and normal hexane (42.5 g) were used instead of styrene as an initiator (0.5 mmol based on lithium) as an initiator.
- the analysis results for the polymer are shown in Table 1 below.
- the polymer was prepared in the same manner as in Example 1 except for using the initiator (0.5 mmol based on lithium), styrene (3.0 g), butadiene (7.5 g), and normal hexane (42.5 g) prepared according to Synthesis Comparative Example 1 as an initiator. Prepared. The analysis results for the polymer are shown in Table 1 below.
- the polymers prepared in Examples 1 to 3 and Comparative Examples 1 to 6 were subjected to GPC analysis under 40 ° C.
- the column was a combination of two PLgel Olexis columns and one PLgel mixed-C column from Polymer Laboratories, and all of the newly replaced columns were mixed bed type columns.
- polystyrene (PS) was used as a GPC standard material for molecular weight calculation.
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Abstract
Description
개시제 | 스티렌(g) | 부타디엔(g) | 수율(%) | GPC (x103) | ||
Mn | MWD | |||||
실시예1 | 리튬 1-(디에틸아미노메틸)-2,4,6-트리메틸벤젠 | 6 | 83.7 | 84.3 | 1.314 | |
실시예2 | 리튬 1-(디에틸아미노메틸)-2,4,6-트리메틸벤젠 | 7.5 | 84.0 | 22.6 | 1.177 | |
실시예3 | 리튬 1-(디에틸아미노메틸)-2,4,6-트리메틸벤젠 | 3 | 7.5 | 75.1 | 39.9 | 1.225 |
비교예1 | n-BuLi | 6 | 78.7 | 49.7 | 1.377 | |
비교예2 | n-BuLi | 7.5 | 75.0 | 23.0 | 1.062 | |
비교예3 | n-BuLi | 3 | 7.5 | 64.8 | 27.0 | 1.114 |
비교예4 | 리튬 1-(디에틸아미노메틸)-2-메틸벤젠 | 6 | 80.3 | 63.2 | 1.354 | |
비교예5 | 리튬 1-(디에틸아미노메틸)-2-메틸벤젠 | 7.5 | 75.0 | 27.8 | 1.125 | |
비교예6 | 리튬 1-(디에틸아미노메틸)-2-메틸벤젠 | 3 | 7.5 | 70.6 | 32.9 | 1.183 |
Claims (8)
- 하기 화학식 1로 표시되는 3급 아미노 관능기를 가진 알킬 체인을 포함하는 화합물과 유기금속 화합물과의 반응 생성물인 음이온 중합 개시제:[화학식 1]상기 화학식 1에서 R1 내지 R5는 독립적으로 수소 또는 탄소수 1 내지 20의 탄화수소기이며, 2개의 치환기가 하나의 지방족 및 방향족 환을 형성할 수 있으며, R1 내지 R5는 적어도 2개는 알킬기이고;R6 내지 R7는 탄소수 1 내지 14의 지방족 탄화수소기 또는 탄소수 5 내지 14의 방향족 탄화수소기이되, n이 2이상인 경우 2개의 치환기가 하나의 지방족 또는 방향족 환을 형성할 수 있으며;n은 1 내지 12이다.
- 청구항 1에 있어서,상기 화학식 1로 표시되는 화합물은 1-(디에틸아미노메틸)-2,4,6-메틸벤젠 또는 1-(디이소프로필아미노메틸)-2,4,6-메틸벤젠인 것을 특징으로 하는 음이온 중합 개시제.
- 청구항 1에 있어서,상기 유기금속 화합물은 알킬리튬인 것을 특징으로 하는 음이온 중합 개시제.
- 공역디엔계 단량체, 또는 공역디엔계 단량체와 방향족 비닐계 단량체를 용매 하에서 하기 화학식 1로 표시되는 3급 아미노 관능기를 가진 알킬 체인을 포함하는 화합물과 유기금속 화합물과의 반응 생성물인 음이온 중합 개시제를 이용하여 중합시키는 단계를 포함하는 공역디엔계 중합체의 제조방법:[화학식 1]상기 화학식 1에서 R1 내지 R5는 독립적으로 수소 또는 탄소수 1 내지 20의 탄화수소기이며, 2개의 치환기가 하나의 지방족 및 방향족 환을 형성할 수 있으며, R1 내지 R5는 적어도 2개는 알킬기이고;R6 내지 R7는 탄소수 1 내지 14의 지방족 탄화수소기 또는 탄소수 5 내지 14의 방향족 탄화수소기이되, n이 2이상인 경우 2개의 치환기가 하나의 지방족 또는 방향족 환을 형성할 수 있으며;n은 1 내지 12이다.
- 청구항 4에 있어서,상기 화학식 1로 표시되는 3급 아미노 관능기를 가진 알킬 체인을 포함하는 화합물과 유기금속 화합물과의 반응 생성물은 상기 단량체 총 100g을 기준으로 0.01 내지 10 mmol로 사용되는 것을 특징으로 하는 공역디엔계 중합체의 제조방법.
- 청구항 4에 있어서,상기 중합체의 제조방법은 극성첨가제가 더 첨가되는 것을 특징으로 하는 공역디엔계 중합체의 제조방법.
- 청구항 6에 있어서,상기 극성첨가제는 상기 화학식 1로 표시되는 3급 아미노 관능기를 가진 알킬 체인을 포함하는 화합물과 유기금속 화합물과의 반응 생성물 총 1 mmol을 기준으로 0.001 내지 10 g으로 투입되는 것으로 특징으로 하는 공역디엔계 중합체의 제조방법.
- 청구항 4 내지 청구항 7 중 어느 한 항의 공역디엔계 중합체의 제조방법에 따라 제조되는 공역디엔계 중합체.
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