WO2016080766A1 - 공액 디엔계 중합체의 제조방법 - Google Patents
공액 디엔계 중합체의 제조방법 Download PDFInfo
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- WO2016080766A1 WO2016080766A1 PCT/KR2015/012426 KR2015012426W WO2016080766A1 WO 2016080766 A1 WO2016080766 A1 WO 2016080766A1 KR 2015012426 W KR2015012426 W KR 2015012426W WO 2016080766 A1 WO2016080766 A1 WO 2016080766A1
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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
- C08F2/04—Polymerisation in solution
- C08F2/06—Organic solvent
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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
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
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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
- 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
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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
- C08F4/06—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
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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
- C08F4/60—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 together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/619—Component covered by group C08F4/60 containing a transition metal-carbon bond
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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
- C08F4/60—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 together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/622—Component covered by group C08F4/62 with an organo-aluminium compound
Definitions
- the present invention relates to a method for producing a conjugated diene polymer.
- conjugated diene-based polymers especially butadiene-based polymers, which are synthetic rubbers as an alternative to natural rubber, which is insufficient in production, is increasing. .
- the linearity or branching of the conjugated diene-based polymer has a great influence on the physical properties of the polymer. Specifically, the lower the linearity and the greater the branching, the higher the dissolution rate and viscosity characteristics of the polymer, and as a result, the processability of the polymer is improved. However, when the branching of the polymer is large, the molecular weight distribution is widened, so that the mechanical properties of the polymer affecting the abrasion resistance, crack resistance, or repulsion property of the rubber composition are rather deteriorated.
- the linearity or branching of conjugated diene-based polymers is highly dependent on the content of cis 1,4-bonds contained in the polymer.
- the content of the cis 1,4-bond in the conjugated diene-based polymer increases, the linearity increases, and as a result, the polymer may have excellent mechanical properties, thereby improving wear resistance, crack resistance, and repulsion property of the rubber composition.
- the method mainly uses diisobutyl aluminum hydride (DIBAH) as an aluminum-based compound capable of simultaneously acting as a scavenger with alkylation and molecular weight control, and DIBAH contained in the catalyst composition
- DIBAH diisobutyl aluminum hydride
- the production of conjugated diene-based polymers leads to various problems in the process.
- prepolymerization is performed by adding a small amount of butadiene to reduce the production of various catalytically active species in the alkylation step using DIBAH, wherein the polymer produced by the prepolymerization of butadiene is a catalyst input line of the polymerization reactor.
- DIBAH diisobutyl aluminum hydride
- the method is not easy to adjust the molecular weight, there is a problem that takes a long time until the point of confirming the change in molecular weight control.
- the process involves chaining during the polymerization reaction. Since a lot of chain transfer occurs, a conjugated diene polymer having many short chain branches and low linearity, that is, a stress / relaxation value of less than 1 at 100 ° C. is produced.
- conjugated diene-based polymers having -S / R values of less than 1 increase the resistance properties of rubber compositions, in particular rolling resistance or rolling resistance (RR) due to high branching, and as a result There is a problem of lowering fuel economy characteristics.
- the problem to be solved by the present invention is to provide a method for producing a conjugated diene polymer having a high cis-1,4-bond content ratio and high linearity, and a narrow molecular weight distribution.
- preparing a mixture of a molecular weight modifier and conjugated diene monomer and polymerizing the mixture using a catalyst composition comprising a lanthanum-based rare earth element-containing compound, a modified methylaluminoxane (MMAO), a halogen compound, and an aliphatic hydrocarbon solvent.
- a catalyst composition comprising a lanthanum-based rare earth element-containing compound, a modified methylaluminoxane (MMAO), a halogen compound, and an aliphatic hydrocarbon solvent.
- the present invention also provides a conjugated diene-based polymer prepared by the above method and having a cis-1,4-bond content of at least 95%.
- the method for preparing the conjugated diene polymer of the present invention there is no fear of problems such as clogging of the reactant supply line by using a catalyst composition exhibiting high catalytic activity due to premixing of the components, and the addition of a molecular weight regulator alone. It is possible to quickly and easily control the molecular weight, and to produce a uniform catalytic active species, it is possible to prepare a conjugated diene polymer having a high content ratio and high linearity of cis-1,4-bond and a narrow molecular weight distribution. .
- the term "preforming" means pre-polymerization in the catalyst composition for preparing conjugated diene-based polymers.
- the catalyst composition comprising a lanthanum-based rare earth element-containing compound, an aluminum compound, and a halogen compound includes diisobutyl aluminum hydride (DIBAH) as the aluminum compound, in order to reduce the possibility of generating various catalytically active species, Monomers such as butadiene are included in a small amount.
- DIBAH diisobutyl aluminum hydride
- prepolymerization prior to the polymerization reaction for preparing the conjugated diene-based polymer, the prepolymerization of monomers such as butadiene is performed in the catalyst composition for producing the conjugated diene-based polymer, which is referred to as prepolymerization.
- premixing means a state in which each component is uniformly mixed without polymerization in the catalyst composition.
- Method for producing a conjugated diene polymer preparing a mixture of a molecular weight modifier and conjugated diene monomer (step 1); And lanthanum-based rare earth element-containing compounds; Modified methylaluminoxane (MMAO); Halogen compounds; And a polymerization reaction using a catalyst composition comprising an aliphatic hydrocarbon solvent (step 2).
- Conventional catalyst systems for the production of conjugated diene-based polymers include lanthanum-based rare earth element-containing compounds, diisobutyl aluminum hydride (hereinafter referred to as DIBAH (diisobutyl) It was prepared by preforming a catalyst composition comprising an aluminum compound, such as aluminum hydride), a halogen compound and butadiene.
- DIBAH diisobutyl aluminum hydride
- the preparation of the conjugated diene-based polymer using such a catalyst system is not easy to control the molecular weight, it took a long time to confirm the molecular weight control change.
- the polymer produced by the prepolymerization of butadiene also caused a problem in the process of blocking the catalyst input line of the polymerization reactor.
- modified methylaluminoxane (hereinafter, referred to as 'MMAO') without using an aluminum compound such as DIBAH, which has been conventionally used for producing a uniform catalytically active species, in the preparation of a conjugated diene-based catalyst composition.
- DIBAH an aluminum compound
- the aluminum compound including DIBAH is added separately from the catalyst composition, so that uniform catalyst active species can be generated, molecular weight can be easily adjusted, and as a result, high linearity is obtained.
- a conjugated diene-based polymer having can be prepared.
- step 1 in the method for producing a conjugated diene polymer according to an embodiment of the present invention is a step of preparing a mixture of a molecular weight modifier and conjugated diene monomer.
- the molecular weight modifier is not added to the catalyst composition as in the conventional method for preparing the conjugated diene polymer, but separately mixed with the conjugated diene monomer.
- the molecular weight can be controlled quickly and the processability can be improved.
- an organoaluminum compound may be used as the molecular weight regulator.
- organoaluminum compound examples include trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-propylaluminum, triisopropylaluminum, tri-n-butylaluminum, tri-t-butylaluminum and tri-n- Pentyl aluminum, trinepentyl aluminum, tri-n-hexyl aluminum, tri-n-octyl aluminum, tris (2-ethylhexyl) aluminum, tricyclohexyl aluminum, tris (1-methylcyclopentyl) aluminum, triphenylaluminum, Tri-p-tolylaluminum, tris (2,6-dimethylphenyl) aluminum, tribenzylaluminum, diethylphenylaluminum, diethyl-p-tolylaluminum, diethylbenzylaluminum, ethyldiphenylaluminum, ethyld
- silane compounds such as trimethyl silane, triethyl silane, tributyl silane, trihexyl silane, dimethyl silane, diethyl silane, dibutyl silane or dihexyl silane may be used.
- the silane compound may be used alone as a molecular weight modifier, or may be mixed with the organoaluminum compound described above.
- the molecular weight modifier may be diethyl aluminum hydride, diisobutylaluminum hydride (DIBAH) or a mixture thereof, more specifically Diisobutylaluminum hydride.
- DIBAH diisobutylaluminum hydride
- the content of the molecular weight modifier may be determined according to the amount of impurities and the amount of moisture. Specifically, in the manufacturing method according to an embodiment of the present invention, the content of the molecular weight regulator that can be used in step 1 may be 1 to 100 moles with respect to 1 mole of the lanthanum-based rare earth element-containing compound.
- the monomer may be used without particular limitation as long as it is usually used in the production of conjugated diene polymer.
- the monomer is 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, 2-ethyl-1,3-butadiene, 2-methyl-1,3-pentadiene, 1,3- Pentadiene, 3-methyl-1,3-pentadiene, 4-methyl-1,3-pentadiene, 1,3-hexadiene or 2,4-hexadiene, and the like, and more specifically, 1,3 -Butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, or 1,3-butadiene or derivatives thereof, such as 2-ethyl-1,3-butadiene, and any one or a mixture of two or more thereof Can be used.
- the other monomers include styrene, p-methyl styrene, ⁇ -methylstyrene, 1-vinylnaphthalene, 3-vinyltoluene, ethylvinylbenzene, divinylbenzene, 4-cyclohexyl styrene, 2,4,6- Aromatic vinyl monomers such as trimethylstyrene, and the like, and any one or a mixture of two or more thereof may be used.
- the other monomers may be used in an amount of 20% by weight or less based on the total weight of the monomers used in the polymerization reaction for preparing the conjugated diene-based polymer.
- step 2 is a mixture prepared in step 1, a lanthanum-based rare earth element-containing compound, modified methyl aluminoxane (MMAO), a halogen compound and It is a step of polymerizing using the catalyst composition containing an aliphatic hydrocarbon solvent.
- MMAO modified methyl aluminoxane
- the catalyst composition is a premix of a lanthanum-based rare earth element-containing compound, MMAO, a halogen compound, and an aliphatic hydrocarbon solvent, and may be prepared by mixing the above compounds according to a conventional method.
- the catalyst composition does not include diisobutylaluminum hydride (DIBAH) and is prepolymerized. Since it is not premixed, it can be very advantageous in the process, such as preventing the polymerization reactor catalyst input line blockage of the polymer by the prepolymerization of butadiene.
- DIBAH diisobutylaluminum hydride
- the lanthanum-based rare earth element-containing compound may be a compound including any one or two or more of the rare earth elements of atomic number 57 to 71 of the periodic table such as neodymium, praseodymium, cerium, lanthanum, gadolinium, and the like. And, more specifically, it may be a compound containing neodymium.
- the lanthanum-based rare earth element-containing compound may be a salt soluble in a hydrocarbon solvent such as carboxylate, alkoxide, ⁇ -diketone complex, phosphate, or phosphite salt of lanthanum-based rare earth element, and more specifically, the neodymium-containing carboxylic acid. It may be a salt.
- C4-10 saturated aliphatic hydrocarbons such as butane, a pentane, hexane, heptane; Saturated alicyclic hydrocarbons having 5 to 20 carbon atoms such as cyclopentane and cyclohexane; Monoolefins such as 1-butene and 2-butene, aromatic hydrocarbons such as benzene, toluene and xylene; Or halogenated hydrocarbons such as methylene chloride, chloroform, trichloroethylene, perchloroethylene, 1,2-dichloroethane, chlorobenzene, bromobenzene or chlorotoluene.
- C4-10 saturated aliphatic hydrocarbons such as butane, a pentane, hexane, heptane
- Saturated alicyclic hydrocarbons having 5 to 20 carbon atoms such as cyclopentane and cyclohexane
- the lanthanum-based rare earth element-containing compound may be a neodymium compound of Formula 1 below:
- R 1 to R 3 are each independently a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms.
- the neodymium compound is Nd (neodecanoate) 3 , Nd (2-ethylhexanoate) 3 , Nd (2,2-diethyl decanoate) 3 , Nd (2,2-dipropyl de Decanoate) 3 , Nd (2,2-dibutyl decanoate) 3 , Nd (2,2-dihexyl decanoate) 3 , Nd (2,2-dioctyl decanoate) 3 , Nd (2 -Ethyl-2-propyl decanoate) 3 , Nd (2-ethyl-2-butyl decanoate) 3 , Nd (2-ethyl-2-hexyl decanoate) 3 , Nd (2-propyl-2- Butyl decanoate) 3 , Nd (2-propyl-2-hexyl decanoate) 3 , Nd (2-isopropy
- the lanthanum-based rare earth element-containing compound is more specifically R in Formula 1 in view of excellent solubility in a polymerization solvent, conversion to catalytic active species, and thus an improvement in catalytic activity without concern for oligomerization.
- 1 is a linear or branched alkyl group having 6 to 12 carbon atoms or 6 to 8 carbon atoms
- R 2 and R 3 are each independently a hydrogen atom or a linear or branched alkyl group having 2 to 8 carbon atoms, provided that R 2 and R 3 may be a neodymium compound which is not a hydrogen atom at the same time.
- Nd (2,2-diethyl decanoate) 3 Nd (2,2-dipropyl decanoate) 3 , Nd (2,2-dibutyl decanoate) 3 , Nd (2, 2-dihexyl decanoate) 3 , Nd (2,2-dioctyl decanoate) 3 , Nd (2-ethyl-2-propyl decanoate) 3 , Nd (2-ethyl-2-butyl decanoate Ate) 3 , Nd (2-ethyl-2-hexyl decanoate) 3 , Nd (2-propyl-2-butyl decanoate) 3 , Nd (2-propyl-2-hexyl decanoate) 3 , Nd (2-propyl-2-isopropyl decanoate) 3 , Nd (2-butyl-2-hexyl decanoate) 3 , Nd (2-hexyl-2
- the lanthanum-based rare earth element-containing compound of Formula 1 in which R 1 is a linear or branched alkyl group having 6 to 8 carbon atoms, and R 2 and R 3 are each independently linear or branched having 2 to 8 carbon atoms Neodymium compounds that are topographic alkyl groups.
- the neodymium compound of Formula 1 when the neodymium compound of Formula 1 includes a carboxylate ligand containing an alkyl group having a variable length of 2 or more carbon atoms in the ⁇ position, the neodymium compound may induce steric changes around the neodymium center metal to block entanglement between the compounds. As a result, oligomerization can be suppressed.
- such a neodymium compound has a high solubility in a polymerization solvent, a decrease in the ratio of neodymium located in the central part, which is difficult to convert to a catalytically active species, resulting in a high conversion rate to the catalytically active species.
- the solubility of the neodymium compound of Formula 1 may be about 4 g or more per 6 g of nonpolar solvent at room temperature (20 ⁇ 5 ° C.).
- the solubility of the neodymium compound means the degree of clear dissolution without turbidity. By exhibiting such high solubility, it is possible to exhibit excellent catalytic activity.
- the modified methylaluminoxane acts as an alkylating agent in the catalyst composition instead of the conventional DIBAH.
- the modified methylaluminoxane is substituted with a methyl group of methylaluminoxane by a modifier, specifically, a hydrocarbon group having 2 to 20 carbon atoms, and specifically, may be a compound of Formula 2 below:
- R is a hydrocarbon group having 2 to 20 carbon atoms, m and n may each be an integer of 2 or more.
- Me in the formula (2) means a methyl group (methyl group).
- R is a linear or branched alkyl group having 2 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, a cycloalkenyl group having 3 to 20 carbon atoms, and 6 to C carbon atoms.
- It may be an aryl group of 20, an aralkyl group of 7 to 20 carbon atoms, an alkylaryl group of 7 to 20 carbon atoms, an allyl group or an alkynyl group of 2 to 20 carbon atoms, more specifically, an ethyl group, isobutyl group, hexyl group or jade It may be a linear or branched alkyl group having 2 to 10 carbon atoms such as a tilyl group, and more specifically, isobutyl group.
- the modified methyl aluminoxane may be substituted with about 50 mol% or more, more specifically 50 to 90 mol% of the methyl group of methyl aluminoxane by the above-described hydrocarbon group having 2 to 20 carbon atoms.
- the content of the substituted hydrocarbon group in the modified methylaluminoxane is within the above range, it is possible to promote the alkylation to increase the catalytic activity.
- Such modified methylaluminoxane may be prepared according to a conventional method, and specifically, may be prepared using trimethylaluminum and trialkylaluminum other than trimethylaluminum.
- the trialkylaluminum may be triisobutylaluminum, triethylaluminum, trihexylaluminum or trioctyl aluminum, and the like, and any one or a mixture of two or more thereof may be used.
- the modified methyl aluminoxane is trimethyl aluminum; And a mixed alkyl group derived from at least one trialkylaluminum other than trimethylaluminum, wherein the trialkylaluminum is any one or two selected from the group consisting of triisobutylaluminum, triethylaluminum, trihexylaluminum and trioctylaluminum It may be a mixture containing more than one species.
- aromatic hydrocarbon solvents should be used because they are not easily dissolved in aliphatic hydrocarbon solvents.
- aromatic hydrocarbon solvent there is a problem of decreasing the reactivity
- aromatic hydrocarbon solvent and an aliphatic hydrocarbon solvent in a catalyst system there is a problem of lowering the catalytic activity.
- a single solvent system can be implemented together with an aliphatic hydrocarbon solvent such as hexane which is mainly used as a polymerization solvent. It may be more advantageous.
- the aliphatic hydrocarbon solvent can promote the catalytic activity, and the reactivity can be further improved by the catalytic activity. As a result, it is possible to quickly and easily control the molecular weight, the catalyst activity is very high, the polymerization proceeds well even at low temperatures, and the polymerization reaction time can be reduced by using a small amount of the main catalyst.
- the aliphatic hydrocarbon solvent is specifically n-pentane, n-hexane, n-heptane, n-octane, n-nonane, n-decane, isopentane, isohexane, isopentane, isooctane , Linear, branched or cyclic aliphatic hydrocarbon solvents having 5 to 20 carbon atoms such as 2,2-dimethylbutane, cyclopentane, cyclohexane, methylcyclopentane or methylcyclohexane; Or a mixed solvent of aliphatic hydrocarbons having 5 to 20 carbon atoms such as petroleum ether (or petroleum spirits), or kerosene, and any one or a mixture of two or more thereof may be used.
- the aliphatic hydrocarbon solvent may be a linear, branched or cyclic aliphatic hydrocarbon solvent having 5 to 8 carbon atoms, or a mixture thereof. And more specifically n-hexane, cyclohexane, or mixtures thereof.
- the halogen compound is not particularly limited in kind, and can be used without particular limitation as long as it is used as a halogenating agent in the manufacture of a diene polymer.
- the halogen compound may include a halogen elemental compound, an interhalogen compound, hydrogen halide, an organic halide, a nonmetal halide, a metal halide or an organometallic halide, and any one or two of them. Mixtures of the above may be used.
- any one or two or more mixtures selected from the group consisting of organic halides, metal halides and organometallic halides may be used.
- the halogen alone may include a diatomic compound such as fluorine (F 2 ), chlorine (Cl 2 ), bromine (Br 2 ) or iodine (I 2 ).
- a diatomic compound such as fluorine (F 2 ), chlorine (Cl 2 ), bromine (Br 2 ) or iodine (I 2 ).
- interhalogen compound examples include iodine monochloride, iodine monobromide, iodine trichloride, iodine pentafluoride, iodine monofluoride or iodine trifluoride.
- hydrogen halide hydrogen fluoride, hydrogen chloride, hydrogen bromide, hydrogen iodide, etc. are mentioned specifically ,.
- the organic halide is specifically t-butyl chloride, t-butyl bromide, allyl chloride, allyl bromide, benzyl chloride, benzyl bromide, chloro-di-phenylmethane, bromo-di-phenylmethane, triphenylmethyl chloride , Triphenylmethyl bromide, benzylidene chloride, benzylidene bromide, methyltrichlorosilane, phenyltrichlorosilane, dimethyldichlorosilane, diphenyldichlorosilane, trimethylchlorosilane, benzoyl chloride, benzoyl bromide, propionyl chloride, propionyl bromide , Methyl chloroformate, methyl bromoformate, iodomethane, diiodomethane, triiodomethane (also called 'iodoform
- the nonmetal halide may be specifically phosphorus trichloride, phosphorus tribromide, phosphorus pentachloride, phosphorus oxychloride, phosphorus oxybromide, boron trifluoride, boron trichloride, boron tribromide, silicon tetrafluoride, silicon tetrabromide, silicon tetrabromide, or trichloride.
- metal halide specifically tin tetrachloride, tin tetrabromide, aluminum trichloride, aluminum tribromide, antimony trichloride, antimony trichloride, antimony tribromide, aluminum trifluoride, gallium trichloride, gallium tribromide, gallium trifluoride, trichloride Indium, indium tribromide, indium trifluoride, titanium tetrachloride, titanium tetrabromide, zinc dichloride, zinc dibromide, zinc difluoride, aluminum trioxide, gallium iodide, indium trioxide, titanium iodide, zinc iodide, Germanium iodide, tin iodide, tin iodide, antimony triiodide or magnesium iodide.
- the organometallic halide is specifically dimethylaluminum chloride, diethylaluminum chloride, dimethylaluminum bromide, diethylaluminum bromide, dimethylaluminum fluoride, diethylaluminum fluoride, methylaluminum dichloride, ethylaluminum dichloride, methyl Aluminum dibromide, ethylaluminum dibromide, methylaluminum difluoride, ethylaluminum difluoride, methylaluminum sesquichloride, ethylaluminum sesquichloride, isobutylaluminum sesquichloride, methylmagnesium chloride, methylmagnesium bromide, ethylmagnesium Chloride, ethylmagnesium bromide, n-butylmagnesium chloride, n-butylmagnesium bromide, phenylmagnesium chloride,
- the catalyst composition may include the above constituents in an optimal amount so as to exhibit better catalytic activity during the polymerization reaction for forming the conjugated diene-based polymer.
- the catalyst composition may include 0.01 to 0.25 mmol, specifically 0.02 to 0.20 mmol, and more specifically 0.02 to 0.10 mmol of the lanthanum-based rare earth element-containing compound based on 100 g of the conjugated diene monomer.
- the catalyst composition may include the modified methylaluminoxane in a molar ratio of 5 to 200 with respect to 1 mole of the lanthanum-based rare earth element-containing compound, and more specifically, may include a molar ratio of 10 to 100.
- the catalyst composition may include the above-mentioned halogen compound in a molar ratio of 1 to 10 with respect to 1 mole of the lanthanum-based rare earth element-containing compound, and more specifically, may include in a molar ratio of 2 to 6.
- the catalyst composition may include the aliphatic hydrocarbon solvent described above with respect to 1 mole of the lanthanum-based rare earth element-containing compound in a molar ratio of 20 to 20,000, and more specifically, in a molar ratio of 100 to 1,000.
- the catalyst composition according to an embodiment of the present invention is modified methyl aluminoxane 5 to 200 with respect to 1 mol of lanthanum-based rare earth element-containing compound Moles, halogen compounds 1 to 10 mol and aliphatic hydrocarbon solvent 20 to 20,000 mol.
- the catalyst composition is 0.01 to 0.25 mmol of the lanthanum-based rare earth element-containing compound, 0.1 to 25.0 mmol of modified methylaluminoxane, 0.02 to 1.5 mmol, and 100% of the conjugated diene monomer, and Aliphatic hydrocarbon solvent may be included in an amount of 10 to 180 mmol.
- the catalyst composition comprises 0.01 to 0.05 mmol of a lanthanum-based rare earth element-containing compound, 0.1 to 5.0 mmol of modified methylaluminoxane, 0.03 to 0.10 mmol of a halogen compound, and 10 to 180 aliphatic hydrocarbon solvents based on 100 g of a conjugated diene monomer. It may comprise an amount of mmol.
- the catalyst composition comprises 0.01 to 0.25 mmol of a lanthanum-based rare earth element-containing compound, 0.05 to 50.0 mmol of a modified methylaluminoxane, and halogen with respect to 100 g of the conjugated diene monomer.
- lanthanum series rare earth element-containing compound is a linear of the R 1 having 6 to 12 carbon atoms in the general formula 1 Or a branched alkyl group
- R 2 and R 3 are each independently a hydrogen atom, or a linear or branched alkyl group having 2 to 6 carbon atoms, provided that R 2 and R 3 comprise a neodymium compound, which is not a hydrogen atom at the same time
- Modified methylaluminoxane is obtained by converting 50 mol% or more of the methyl group of methylaluminoxane to a hydrocarbon having 2 to 20 carbon atoms.
- the compound may be a bright compound
- the aliphatic hydrocarbon solvent may include any one or a mixture of two or more selected from the group consisting of linear, branched, and cyclic aliphatic hydrocarbon solvents having 5 to 8 carbon atoms.
- the mixing of the lanthanum-based rare earth element-containing compound, the modified methylaluminoxane, the halogen compound, and the aliphatic hydrocarbon solvent as described above may be performed according to a conventional method.
- the mixing may be carried out at a temperature range of 0 °C to 60 °C, heat treatment may be performed in parallel to meet the above temperature conditions.
- the first heat treatment is performed at a temperature of 10 ° C. to 60 ° C., and the resulting mixture is halogenated. It may be carried out according to a mixing process including the step of adding a compound to a second heat treatment in a temperature range of 0 °C to 60 °C.
- the catalyst composition having the composition as described above may exhibit a catalytic activity of 10,000 kg [polymer] / mol [Nd] ⁇ h or more during the polymerization of 5 to 60 minutes within the temperature range of 20 ° C. to 90 ° C.
- the catalytic activity is a value obtained from the molar ratio of the lanthanum-based rare earth element-containing compound, more specifically, the neodymium compound of Formula 1, relative to the total yield of the produced diene polymer.
- a reaction terminating agent such as polyoxyethylene glycol phosphate, etc., an antioxidant such as 2,6-di-t-butyl paracresol, chelating agent, dispersant to facilitate solution polymerization usually
- additives such as pH adjusters, deoxygenants or oxygen scavengers may optionally be further used.
- the polymerization reaction in step 2 may be carried out at a temperature range of 20 °C to 90 °C, in particular can realize a 100% conversion of the polymer for a short time even at a low temperature of about 20 °C to 30 °C. If the temperature exceeds 90 ° C during the polymerization reaction, it is difficult to sufficiently control the polymerization reaction, and there is a fear that the cis-1,4 bond content of the resulting diene polymer is lowered. Moreover, when temperature is less than 20 degreeC, there exists a possibility that a polymerization reaction speed and efficiency may fall.
- the polymerization reaction may be performed for 5 minutes to 60 minutes until the conjugated diene polymer 100% conversion, specifically 10 minutes to 30 minutes Can be.
- the conjugated diene-based polymer can be obtained by adding a lower alcohol, such as methyl alcohol or ethyl alcohol, or by adding steam to precipitate.
- the method for preparing a conjugated diene polymer according to an embodiment of the present invention may further include a precipitation and separation process for the conjugated diene polymer prepared after the polymerization reaction. At this time, the filtration, separation and drying process for the precipitated conjugated diene-based polymer may be performed according to a conventional method.
- a neodymium catalyst comprising an active organometallic site derived from a conjugated diene-based polymer, specifically, the lanthanum-based rare earth element-containing compound, more specifically, a catalyst comprising the neodymium compound of Formula 1
- a conjugated diene-based polymer even more specifically, neodymium catalyzed 1,4-cis polybutadiene comprising 1,3-butadiene monomeric units is produced.
- the conjugated diene-based polymer may be 1,4-cis polybutadiene consisting of only 1,3-butadiene monomer.
- the conjugated diene polymer produced by the above-described manufacturing method has excellent physical properties including high linearity as described above.
- the conjugated diene polymer is a polymer having high linearity with a value of -S / R (stress / relaxation) at 100 ° C of 1 or more. More specifically, the conjugated diene-based polymer has a -S / R value of 1 to 1.2, and more specifically 1.045 to 1.2.
- the -S / R value represents a change in stress that occurs in response to the same amount of strain generated in the material, and is an index indicating the linearity of the polymer.
- the lower the -S / R value the lower the linearity of the conjugated diene-based polymer.
- the lower the linearity the higher the rolling resistance or rotational resistance when applied to the rubber composition.
- the branching degree and molecular weight distribution of a polymer can be predicted from the said -S / R value.
- the lower the -S / R value the higher the degree of branching, the wider the molecular weight distribution, and as a result the polymer's processability is good while its mechanical properties are lower.
- Conjugated diene-based polymer according to an embodiment of the present invention has a low rolling resistance or rolling resistance (RR; Rolling Resistance) compared to the polymer produced by the conventional catalyst system by implementing a value of -S / R of the above range, the fuel efficiency characteristics are greatly The effect can be improved.
- RR rolling resistance or rolling resistance
- the -S / R value can be measured under conditions of 100 ° C. and Rotor Speed 2 ⁇ 0.02 rpm using a Mooney Viscometer, for example, Large Rotor of Monsanto MV2000E. Specifically, the polymer is allowed to stand at room temperature (23 ⁇ 5 ° C.) for at least 30 minutes, and then 27 ⁇ 3 g is collected and filled into the die cavity, and the platen is operated to measure the Mooney viscosity while applying torque. The -S / R value can be determined by measuring the slope of the Mooney viscosity change that appears as the torque is released.
- the conjugated diene-based polymer according to an embodiment of the present invention may have a narrow molecular weight distribution having a polydispersity (PDI) of 3 or less.
- PDI polydispersity
- the PDI of the conjugated diene-based polymer exceeds 3, mechanical properties such as wear resistance and impact resistance may decrease when applied to the rubber composition.
- the PDI of the conjugated diene-based polymer may be specifically 2.0 to 2.5, more specifically 2.35 to 2.5.
- the PDI of the conjugated diene-based polymer is also called molecular weight distribution (MWD) and can be calculated from the ratio (Mw / Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn).
- Mw weight average molecular weight
- Mn number average molecular weight
- Mw weight average molecular weight
- Mw weight average molecular weight
- Ni is the number of molecules whose molecular weight is Mi. All molecular weight averages can be expressed in grams per mole (g / mol).
- the said weight average molecular weight and number average molecular weight are polystyrene conversion molecular weights analyzed by gel permeation chromatography (GPC), respectively.
- the weight average molecular weight (Mw) is 400,000 to 2,500,000 g / mol, specifically 1,100,000 to 2,300,000 g / may be mol.
- the conjugated diene polymer according to an embodiment of the present invention may have a number average molecular weight (Mn) of 100,000 to 1,000,000 g / mol, specifically, 500,000 to 900,000 g / mol.
- the weight average molecular weight (Mw) of the conjugated diene polymer is less than 400,000 g / mol or the number average molecular weight (Mn) is less than 100,000 g / mol, hysteresis loss may increase due to a decrease in elastic modulus of the vulcanizate, and wear resistance may deteriorate. have.
- the weight average molecular weight (Mw) exceeds 2,500,000 g / mol or the number average molecular weight (Mn) exceeds 1,000,000 g / mol, the workability of the rubber composition is deteriorated due to the decrease in processability of the conjugated diene polymer, Dough becomes difficult, and it may be difficult to sufficiently improve the physical properties of the rubber composition.
- the conjugated diene-based polymer according to an embodiment of the present invention may have a Mooney viscosity (MV) of 30 to 90, specifically 70 to 90 at 100 °C. When it has the Mooney viscosity of the above-mentioned range, it can exhibit more excellent workability.
- MV Mooney viscosity
- the Mooney viscosity can be measured using a Mooney viscometer, for example, Rotor Speed 2 ⁇ 0.02rpm, Large Rotor at 100 ° C with MV2000E from Monsanto.
- the sample used may be measured by leaving the plate at 27 ⁇ 3 g after filling at the room temperature (23 ⁇ 5 ° C.) for more than 30 minutes and operating the platen.
- the conjugated diene-based polymer according to an embodiment of the present invention has a content of cis bond in the conjugated diene-based polymer measured by Fourier transform infrared spectroscopy, specifically, the content of cis-1,4 bond is 95% Above, more specifically, it may be 96% or more.
- the cis-1,4 bond content in the polymer is high, linearity may be increased to improve wear resistance and crack resistance of the rubber composition when blended into the rubber composition.
- a rubber composition comprising the conjugated diene-based polymer.
- the rubber composition may include 10 wt% to 100 wt% of the conjugated diene polymer and 0 to 90 wt% of the rubber component.
- the content of the conjugated diene-based polymer is less than 10% by weight, the effect of improving wear resistance, crack resistance and ozone resistance of the rubber composition may be insignificant.
- the rubber component is specifically natural rubber (NR); Or styrene-butadiene copolymer (SBR), hydrogenated SBR, polybutadiene (BR) with low cis-1,4-bond content, hydrogenated BR, polyisoprene (IR), butyl rubber (IIR), ethylene-propylene Ethylene propylene rubber, Ethylene propylene diene rubber, 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), polysulfide rubber, acrylic rubber, urethane It may be a synthetic rubber such as rubber, silicone rubber or epichlorohydr
- the rubber composition may further comprise at least 10 parts by weight of the filler with respect to 100 parts by weight of the rubber component.
- the filler may be carbon black, starch, silica, aluminum hydroxide, magnesium hydroxide, clay (hydrated aluminum silicate), or the like, and any one or a mixture of two or more thereof may be used.
- the rubber composition may contain a compounding agent commonly used in the rubber industry, such as a vulcanizing agent, a vulcanization accelerator, an anti-aging agent, an anti-scoring agent, a softening agent, a zinc oxide, a stearic acid, or a silane coupling agent. It may further include appropriately selected and blended within the range that does not impair the purpose.
- a compounding agent commonly used in the rubber industry such as a vulcanizing agent, a vulcanization accelerator, an anti-aging agent, an anti-scoring agent, a softening agent, a zinc oxide, a stearic acid, or a silane coupling agent. It may further include appropriately selected and blended within the range that does not impair the purpose.
- Such rubber compositions are specifically used for passenger cars, trucks (tracks), bus tires (eg, tire treads, side wheels, subtreads, bead fillers, braking members, etc.), elastic parts of tire stock, O-rings It is useful in the manufacture of various rubber moldings, such as profiles, gaskets, membranes, hoses, belts, soles, dustproof rubbers or window seals.
- various rubber moldings such as profiles, gaskets, membranes, hoses, belts, soles, dustproof rubbers or window seals.
- resistance properties in particular rolling resistance or rotational resistance, can be reduced, resulting in a markedly improved fuel efficiency. It can be useful for tires that require low resistance and good fuel economy.
- the first mixed solution was placed in a dropping funnel, and dropped to the second mixed solution at room temperature (20 ⁇ 5 ° C.) to prepare a third mixed solution. After the addition was completed, the mixture was stirred at room temperature (20 ⁇ 5 ° C) for 15 hours.
- the third mixed solution was distilled under reduced pressure to remove all solvents, and 50 ml hexane and 50 ml of distilled water were added to the third mixed solution, placed in a separatory funnel, and the organic layer was extracted three times.
- Sodium sulfate was added to the combined organic layers, the mixture was stirred at room temperature (20 ⁇ 5 ° C.) for 10 minutes, and then the solution obtained by filtration was removed by distillation under reduced pressure.
- 0.38 g (yield 94%) of the title compound (I) as a yellowish blue solid dissolved in hexane was obtained.
- FT-IR ⁇ 953, 2921, 2852, 1664, 1557, 1505, 1457, 1412, 1377, 1311, 1263 cm -1
- Neodymium chloride hydrate 3.0 g (8.3 mmol) was added to a 500 ml round flask, and 150 ml hexane and 100 ml ethanol were added to dissolve to prepare a second mixed solution.
- the first mixed solution was placed in a dropping funnel, and dropped into the two mixed solutions at room temperature (20 ⁇ 5 ° C.) to prepare a third mixed solution. After the addition was completed, the mixture was stirred at room temperature (20 ⁇ 5 ° C) for 15 hours.
- the third mixed solution was distilled under reduced pressure to remove all of the solvent, 100 ml hexane and 100 ml of distilled water were added to the third mixed solution, placed in a separatory funnel, and the organic layer was extracted three times. Sodium sulfate was added to the combined organic layers, the mixture was stirred at room temperature (20 ⁇ 5 ° C.) for 10 minutes, and then the solution obtained by filtration was removed by distillation under reduced pressure. As a result, 5.3 g (yield: 96%) of the title compound (II) as a purple solid were obtained.
- a vacuum and nitrogen were alternately added to a completely dried 10L high pressure reactor and filled with nitrogen again to bring it to normal pressure (1 ⁇ 0.05atm).
- Hexane (2086.4 g) and 1,3-butadiene (250 g) were added and mixed in the high pressure reactor, followed by a first heat treatment at 70 ° C. for about 10 minutes.
- Diisobutylaluminum hydride (DIBAH) was added to this high pressure reactor in the amounts shown in Table 1, followed by mixing, and the resulting mixed solution was subjected to a second heat treatment at about 70 ° C. for about 2 minutes to obtain a molecular weight modifier and A mixture of conjugated diene monomers was prepared.
- MMAO modified methylaluminoxane
- MIBC MAO modified methylaluminoxane
- hexane was premixed and then heat treated at 50 ° C. for 10 minutes. Diethylaluminum chloride (DEAC) was added to the resultant mixture at the amount used in Table 1 below, followed by heat treatment at 26 ° C. for 10 minutes to prepare a catalyst composition.
- DEAC Diethylaluminum chloride
- the catalyst composition was injected into a mixture of the molecular weight modifier and the conjugated diene monomer prepared in step (i), and subjected to a polymerization reaction at 70 ° C. for about 40 minutes to obtain 1,4-cis polybutadiene.
- neodymium compound prepared in Preparation Example 2 instead of the neodymium compound prepared in Preparation Example 1, and using the neodymium tetrachloride compound of Preparation Example 2, MMAO, hexane, DIBAH and DEAC in the amounts shown in Table 1 below Except, 1,4-cis polybutadiene was prepared in the same manner as in Example 1.
- the neodymium compound prepared in Preparation Example 2 was used instead of the neodymium compound prepared in Preparation Example 1, and the neodymium compound of Preparation Example 2, MMAO, hexane, DIBAH, and DEAC were used in the amounts shown in Table 2 below.
- a 1,4-cis polybutadiene was prepared in the same manner as in Example 1, except that the polymerization reaction was performed at a temperature of 30 ° C. for about 40 minutes.
- the neodymium compound prepared in Preparation Example 2 was used, and the neodymium compound, hexane, DIBAH and DEAC of Preparation Example 2 were used in the amounts shown in Table 1 below, and the table A 1,4-cis polybutadiene was prepared in the same manner as in Comparative Example 1 except that the reaction conditions described in 1 were carried out.
- the neodymium compound prepared in Preparation Example 2 was used, and the neodymium compound, hexane, DIBAH and DEAC of Preparation Example 2 were used in the amounts shown in Table 2 below, and A 1,4-cis polybutadiene was prepared in the same manner as in Comparative Example 1 except that the reaction conditions described in 2 were carried out.
- the conversion rate is a value obtained by measuring the mass of a part of the reaction solution taken after completion of the polymerization reaction, and heating the part of the polymer at 120 ° C. for 10 minutes to remove all of the hexane solvent and residual butadiene, thereby removing the mass of the remaining polybutadiene. It calculated using the ratio of the measured value.
- catalyst activity was calculated using the mass of the polybutadiene produced
- the 1,4-cis polybutadiene prepared in Examples and Comparative Examples was dissolved in tetrahydrofuran (THF) for 30 minutes under 40 ° C., respectively, and then loaded and flowed into gel permeation chromatography (GPC).
- GPC gel permeation chromatography
- two columns of PLgel Olexis brand name and one PLgel mixed-C column of Polymer Laboratories were used in combination. The newly replaced columns were all mixed bed type columns, and polystyrene was used as the gel permeation chromatography standard material (GPC Standard material).
- the sample used was left at room temperature (23 ⁇ 5 °C) for more than 30 minutes, collected 27 ⁇ 3g and filled in the die cavity and operated the platen (Platen) to measure the Mooney viscosity.
- Preparation of the molecular weight regulator-containing mixture of 1) in Tables 1 and 2 means the preparation of the mixture by mixing the molecular weight regulator and the diene monomer.
- Table 1 compares the content of MMAO and DIBAH and the polymerization conversion, catalytic activity, and the cis-1,4 bond content and molecular weight distribution and linearity according to the order of the input of DIBAH.
- the polymerization time is 1/3 at the same polymerization temperature even when the main catalyst of the Nd-based compound having a small amount of 1/6 to 1/3 compared to Comparative Examples 1 and 2 is used. Shortened to.
- the polymerization rate was about 86% to 88%, although the amount of the main catalyst was increased three to six times and the polymerization time was increased three times as compared with Examples 1 to 4. Conversion rate is shown.
- 1,4-cis polybutadiene prepared in Examples 1 to 4 it showed a narrow molecular weight distribution compared to Comparative Examples 1 and 2.
- the 1,4-cis polybutadiene of Examples 1 to 4 has a molecular weight distribution range of 2.5 or less in the range of 2.3 to 2.5, whereas the polymers of Comparative Examples 1 and 2 are 3.24 and 4.34, respectively. It showed a markedly increased molecular weight distribution compared to 4-4.
- Table 2 shows the polymerization conversion, catalytic activity, and the cis-1,4 bond content, molecular weight distribution and linearity according to the order of DIBAH by varying the content of DIBAH and polymerization temperature, and the prepared 1,4-cis polybutadiene. Is a comparison.
- Examples 5 to 7 has a very high catalytic activity, the polymerization proceeded easily in a short time even at low temperature (30 °C). In contrast, in Comparative Examples 3 and 4, the polymerization conversion did not reach 100% even when the polymerization was performed at 70 ° C. for 60 minutes.
- the 1,4-cis polybutadiene prepared in Examples 5 to 7 showed an increase in -S / R of 1 or more by 20% or more compared to Comparative Examples 3 and 4.
- the 1,4-cis polybutadiene of Examples 5 to 7 exhibits ultra high linearity, and as a result, when applied to tires, it can be expected that rolling resistance can be reduced and fuel efficiency can be improved.
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Abstract
Description
Claims (25)
- 분자량 조절제 및 공액 디엔계 단량체의 혼합물을 준비하는 단계; 및상기 혼합물을 란탄 계열 희토류 원소 함유 화합물, 변성 메틸알루미녹산, 할로겐 화합물 및 지방족 탄화수소계 용매를 포함하는 촉매 조성물을 이용하여 중합 반응시키는 단계를 포함하는 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 촉매 조성물은 란탄 계열 희토류 원소 함유 화합물, 변성 메틸알루미녹산, 할로겐 화합물 및 지방족 탄화수소계 용매를 혼합한 후 0℃ 내지 60℃의 온도 범위에서 열처리하여 제조되는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 촉매 조성물은 란탄 계열 희토류 원소 함유 화합물, 변성 메틸알루미녹산, 및 지방족 탄화수소계 용매를 혼합한 후 10℃ 내지 60℃의 온도 범위에서 제1 열처리를 수행하고, 결과의 생성물에 할로겐 화합물을 투입하여 0℃ 내지 60℃의 온도 범위에서 제2 열처리를 수행하는 단계를 포함하는 제조방법에 의해 제조되는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 촉매 조성물은 공액 디엔계 단량체 100 g에 대해 란탄 계열 희토류 원소 함유 화합물을 0.01 내지 0.25 mmol의 양으로 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 촉매 조성물은 공액 디엔계 단량체 100 g에 대해 란탄 계열 희토류 원소 함유 화합물 0.01 내지 0.25 mmol, 변성 메틸알루미녹산 0.05 내지 50.0 mmol, 할로겐 화합물 0.01 내지 2.5 mmol, 및 지방족 탄화수소계 용매 5 내지 200 mmol을 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 변성 메틸알루미녹산은 메틸알루미녹산의 메틸기 중 50 내지 90몰%가 탄소수 2 내지 20의 탄화수소기로 치환된 것인 공액 디엔계 중합체의 제조방법.
- 제6항에 있어서,상기 탄화수소기는 탄소수 2 내지 10의 선형 또는 분지형의 알킬기인 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 변성 메틸알루미녹산은 트리메틸알루미늄; 및 트리메틸알루미늄 이외의 1종 이상의 트리알킬알루미늄 유래의 혼성 알킬기를 포함하고,상기 트리알킬알루미늄은 트리이소부틸알루미늄, 트리에틸알루미늄, 트리헥실알루미늄 및 트리옥틸알루미늄으로 이루어진 군으로부터 선택되는 어느 하나 또는 2종 이상의 혼합물을 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제9항에 있어서,상기 란탄 계열 희토류 원소 함유 화합물은 상기 화학식 1에서, R1이 탄소수 6 내지 12의 선형 또는 분지형 알킬기이고, R2 및 R3이 각각 독립적으로 수소원자이거나 또는 탄소수 2 내지 8의 선형 또는 분지형 알킬기이되, 단 R2 및 R3이 동시에 수소 원자가 아닌 네오디뮴 화합물을 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제9항에 있어서,상기 란탄 계열 희토류 원소 함유 화합물은 상기 화학식 1에서, R1이 탄소수 6 내지 8의 선형 또는 분지형 알킬기이고, R2 및 R3이 각각 독립적으로 탄소수 2 내지 8의 선형 또는 분지형 알킬기인 네오디뮴 화합물을 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 란탄 계열 희토류 원소 함유 화합물은 Nd(2,2-디에틸 데카노에이트)3, Nd(2,2-디프로필 데카노에이트)3, Nd(2,2-디부틸 데카노에이트)3, Nd(2,2-디헥실 데카노에이트)3, Nd(2,2-디옥틸 데카노에이트)3, Nd(2-에틸-2-프로필 데카노에이트)3, Nd(2-에틸-2-부틸 데카노에이트)3, Nd(2-에틸-2-헥실 데카노에이트)3, Nd(2-프로필-2-부틸 데카노에이트)3, Nd(2-프로필-2-헥실 데카노에이트)3, Nd(2-프로필-2-이소프로필 데카노에이트)3, Nd(2-부틸-2-헥실 데카노에이트)3, Nd(2-헥실-2-옥틸 데카노에이트)3, Nd(2-t-부틸 데카노에이트)3, Nd(2,2-디에틸 옥타노에이트)3, Nd(2,2-디프로필 옥타노에이트)3, Nd(2,2-디부틸 옥타노에이트)3, Nd(2,2-디헥실 옥타노에이트)3, Nd(2-에틸-2-프로필 옥타노에이트)3, Nd(2-에틸-2-헥실 옥타노에이트)3, Nd(2,2-디에틸 노나노에이트)3, Nd(2,2-디프로필 노나노에이트)3, Nd(2,2-디부틸 노나노에이트)3, Nd(2,2-디헥실 노나노에이트)3, Nd(2-에틸-2-프로필 노나노에이트)3 및 Nd(2-에틸-2-헥실 노나노에이트)3로 이루어진 군으로부터 선택되는 어느 하나 또는 둘 이상의 혼합물을 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 지방족 탄화수소계 용매는 탄소수 5 내지 20의 선형, 분지형 및 환형의 지방족 탄화수소로 이루어진 군에서 선택되는 어느 하나 또는 둘 이상의 혼합물을 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 지방족 탄화수소계 용매는 헥산, 시클로헥산 및 이들의 혼합물로 이루어진 군에서 선택되는 어느 하나를 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 할로겐 화합물은 할로겐 단체, 할로겐간 화합물, 할로겐화 수소, 유기 할라이드, 비금속 할라이드, 금속 할라이드 및 유기금속 할라이드로 이루어진 군으로부터 선택된 어느 하나 또는 둘 이상의 혼합물을 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 촉매 조성물은 란탄 계열 희토류 원소 함유 화합물 1몰에 대하여 변성 메틸알루미녹산을 5 내지 200의 몰비로 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 촉매 조성물은 란탄 계열 희토류 원소 함유 화합물 1몰에 대하여 변성 메틸알루미녹산 5 내지 200몰, 할로겐 화합물 1 내지 10몰 및 지방족 탄화수소계 용매 20 내지 20,000몰로 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 촉매 조성물은 란탄 계열 희토류 원소 함유 화합물, 변성 메틸알루미녹산, 할로겐 화합물 및 지방족 탄화수소계 용매의 예비 혼합물인 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 촉매 조성물은 디이소부틸알루미늄 하이드라이드를 포함하지 않는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 분자량 조절제는 트리하이드로카르빌 알루미늄, 디하이드로카르빌 알루미늄 하이드라이드, 수소 및 실란 화합물로 이루어진 군에서 선택되는 어느 하나 또는 둘 이상의 혼합물을 포함하는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 분자량 조절제는 란탄 계열 희토류 원소 함유 화합물 1몰에 대하여 1 내지 100 몰의 양으로 사용되는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 중합 반응은 20℃ 내지 90℃의 온도 범위에서 수행되는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 중합 반응은 공액 디엔계 중합체 100% 전환율에 이를 때까지 5분 내지 60분 동안 수행되는 것인 공액 디엔계 중합체의 제조방법.
- 제1항에 있어서,상기 공액 디엔계 중합체는 1,4-시스 폴리부타디엔인 것인 공액 디엔계 중합체의 제조방법.
- 제1항 내지 제24항 중 어느 한 항에 따른 제조방법에 의해 제조되며, 95% 이상의 시스-1,4-결합 함량을 갖는 것인 공액 디엔계 중합체.
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