WO2016080765A1 - 공액 디엔계 중합체 - Google Patents
공액 디엔계 중합체 Download PDFInfo
- Publication number
- WO2016080765A1 WO2016080765A1 PCT/KR2015/012425 KR2015012425W WO2016080765A1 WO 2016080765 A1 WO2016080765 A1 WO 2016080765A1 KR 2015012425 W KR2015012425 W KR 2015012425W WO 2016080765 A1 WO2016080765 A1 WO 2016080765A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cis polybutadiene
- decanoate
- molecular weight
- compound
- lanthanum
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
-
- C—CHEMISTRY; METALLURGY
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to conjugated diene polymers, and more particularly, to cis 1,4-polybutadiene having a value of -S / R (stress / relaxation) at 100 ° C of 1 or more.
- 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.
- a method of preparing a conjugated diene polymer by prepolymerizing a catalyst composition including an organoaluminum compound, a halogen compound, and butadiene together with a neodymium compound, and performing a polymerization reaction of the conjugated diene monomer using the same has been proposed.
- the method mainly uses diisobutyl aluminum hydride (DIBAH) as an aluminum compound capable of simultaneously performing alkylation and molecular weight control, and the DIBAH contained in the catalyst composition is used to prepare a conjugated diene polymer.
- DIBAH diisobutyl aluminum hydride
- 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.
- the said method has a problem that molecular weight adjustment is not easy and it takes long time to confirm a molecular weight control change.
- the process involves chaining during the polymerization reaction.
- 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 first problem to be solved by the present invention is 1,4-cis polybutadiene which has a high linearity, which can reduce the resistance properties, in particular rolling resistance or rolling resistance, when applied to the rubber composition, and as a result improve the fuel efficiency characteristics To provide.
- the second problem to be solved by the present invention is a rubber composition including the cis 1,4-polybutadiene and excellent resistance properties and fuel economy characteristics, and tire parts manufactured using the 1,4-cis polybutadiene To provide.
- the present invention has the following configuration:
- 1,4-cis polybutadiene having a value of -S / R (stress / relaxation) at 100 ° C of 1 or more.
- Said 1,4-cis polybutadiene has a weight average molecular weight (Mw) of 400,000 to 2,500,000 g / mol, the number average molecular weight (Mn) of 100,000 to 1,000,000 g / mol, (1) or ( 1,4-cis polybutadiene according to 2).
- the 1,4-cis polybutadiene is obtained by polymerizing a mixture of a molecular weight modifier with a 1,3-butadiene or butadiene derivative as a monomer using a catalyst composition, and the catalyst composition is a lanthanum series rare earth.
- 1,4-cis polybutadiene in any one of said (1)-(5) containing an element containing compound, a modified methyl aluminoxane, a halogen compound, and an aliphatic hydrocarbon-type solvent.
- the molecular weight modifier comprises any one or a mixture of two or more selected from the group consisting of trihydrocarbyl aluminum, dihydrocarbyl aluminum hydride, hydrogen and a silane compound. , 4-cis polybutadiene.
- a lanthanum series rare earth element-containing compound a modified methylaluminoxane, a halogen compound, and an aliphatic hydrocarbon solvent.
- the catalyst composition comprises 0.01 to 0.25 mmol of lanthanum-based rare earth element-containing compound, 0.05 to 50.0 mmol of modified methylaluminoxane, 0.01 to 2.5 mmol of halogen compound, and 5 to 200 mmol of aliphatic hydrocarbon solvent based on 100 g of monomer. 1,4-cis polybutadiene according to any one of the above (6) to (10).
- the catalyst composition (5) comprising 5 to 200 moles of modified methylaluminoxane, 1 to 10 moles of halogen compound and 20 to 20,000 moles of aliphatic hydrocarbon solvent, based on 1 mole of lanthanum rare earth element-containing compound. 1,4-cis polybutadiene according to any one of (12).
- R 1 to R 3 are each independently a hydrogen atom or a linear or branched alkyl group having 1 to 12 carbon atoms.
- R 1 is a linear or branched alkyl group having 6 to 12 carbon atoms
- R 2 and R 3 are each independently a hydrogen atom or a linear carbon atoms of 2 to 8 Or a branched alkyl group, provided that R 2 and R 3 comprise a neodymium compound which is not a hydrogen atom at the same time.
- the lanthanum-based rare earth element-containing compound is 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) 3 , Nd (2-ethyl-2-hexyl decanoate) 3 , Nd (2-propyl-2-butyl decanoate) 3 , Nd (2-propyl-2-butyl decanoate) 3 , Nd (2-propyl-2-hexyl Decanoate) 3 , Nd (2-propyl-2-isopropyl decanoate) 3 ,
- the modified methyl aluminoxane is 1,4- according to any one of (6) to (16), wherein 50 to 90 mol% of the methyl group of methyl aluminoxane is substituted with a hydrocarbon group having 2 to 20 carbon atoms. Cis polybutadiene.
- the aliphatic hydrocarbon solvent includes any one or a mixture of two or more selected from the group consisting of linear, branched and cyclic aliphatic hydrocarbons having 5 to 20 carbon atoms. 1,4-cis polybutadiene as described in any one.
- halogen compound includes any one or two or more mixtures selected from the group consisting of halogen groups, interhalogen compounds, hydrogen halides, organic halides, nonmetal halides, metal halides and organometallic halides. 1,4-cis polybutadiene according to any one of (19).
- 1,4-cis polybutadiene according to the present invention has a high linearity with -S / R value of 1 or more at 100 ° C., which reduces the resistance properties, in particular rolling resistance or rolling resistance, when applied to the rubber composition, fuel efficiency characteristics Can greatly improve.
- the term "preforming" refers to pre-polymerization in conjugated diene-based polymers or catalyst compositions for preparing 1,4-cis polybutadiene.
- the catalyst composition for preparing 1,4-cis polybutadiene containing a lanthanum-based rare earth element-containing compound, an aluminum compound, and a halogen compound includes diisobutyl aluminum hydride (DIBAH) as the aluminum compound
- DIBAH diisobutyl aluminum hydride
- monomers such as butadiene are included together in a small amount. Accordingly, prior to the polymerization reaction for producing 1,4-cis polybutadiene, butadiene is pre-polymerized in the catalyst composition for producing 1,4-cis polybutadiene, which is referred to as prepolymerization.
- premixing means a state in which each component is uniformly mixed without polymerization in the catalyst composition.
- the -S / R 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 1,4-cis polybutadiene.
- 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.
- 1,4-cis polybutadiene is a polymer having high linearity with a value of -S / R (stress / relaxation) at 1 or more at 100 ° C. More specifically, the -S / R value of the 1,4-cis polybutadiene may be 1 to 1.2, and even more specifically 1.045 to 1.2.
- 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, after leaving the polymer at room temperature (23 ⁇ 5 °C) for 30 minutes or more, 27 ⁇ 3g is taken 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 as the torque is released.
- the 1,4-cis polybutadiene 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 1,4-cis polybutadiene exceeds 3, mechanical properties such as wear resistance and impact resistance may decrease when applied to a rubber composition.
- the PDI of the 1,4-cis polybutadiene may be specifically 2.0 to 2.5, more specifically 2.35 to 2.5.
- the PDI of 1,4-cis polybutadiene 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 1,4-cis polybutadiene according to an embodiment of the present invention satisfies the above polydispersity conditions, and has a weight average molecular weight (Mw) of 400,000 to 2,500,000 g / mol, specifically 1,100,000 to 2,300,000 g / mol.
- the 1,4-cis polybutadiene 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 1,4-cis polybutadiene is less than 400,000 g / mol or the number average molecular weight (Mn) is less than 100,000 g / mol, the hysteresis loss increases due to the decrease in the elastic modulus of the vulcanizate and the wear resistance deteriorates. There is a concern.
- 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 1,4-cis polybutadiene. The kneading becomes difficult, and it may be difficult to sufficiently improve the physical properties of the rubber composition.
- the 1,4-cis polybutadiene according to an embodiment of the present invention when the weight-average molecular weight (Mw) and the number-average molecular weight conditions together with -S / R and PDI at the same time, rubber When applied to the composition it is possible to improve the balance without biasing any mechanical properties, elastic modulus and processability to the rubber composition.
- Mw weight-average molecular weight
- PDI number-average molecular weight
- the 1,4-cis polybutadiene meets the above -S / R conditions, has a PDI of 3 or less, a weight average molecular weight (Mw) of 400,000 to 2,500,000 g / mol, and a number average molecular weight (Mn). May be from 100,000 to 1,000,000 g / mol.
- the PDI is 2 to 2.5
- the weight average molecular weight (Mw) is 700,000 to 2,300,000 g / mol
- the number average molecular weight (Mn) is 300,000 to 900,000 g / mol
- number average molecular weight (Mn) may be 500,000 to 900,000 g / mol.
- the 1,4-cis polybutadiene 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 Monsanto MV2000E.
- the sample used can be measured by leaving the plate at 27 ⁇ 3 g after filling at the room temperature (23 ⁇ 3 °C) for more than 30 minutes, and then operating the platen.
- the 1,4-cis polybutadiene according to an embodiment of the present invention the condition of Mooney viscosity together with the above-S / R, PDI, weight average molecular weight (Mw) and number average molecular weight (Mn)
- Mw weight average molecular weight
- Mn number average molecular weight
- the 1,4-cis polybutadiene meets the above -S / R conditions, has a PDI of 3 or less, a weight average molecular weight (Mw) of 400,000 to 2,500,000 g / mol, and a number average molecular weight (Mn). 100,000 to 1,000,000 g / mol, the Mooney viscosity at 100 ° C may be 30 to 90, more specifically 70 to 90.
- the 1,4-cis polybutadiene has a PDI of 2.35 to 2.5, a weight average molecular weight (Mw) of 1,100,000 to 2,300,000 g / mol, and a number average molecular weight (Mn) of 500,000 to 900,000 g / mol, 100 Mooney viscosity at °C may be 70 to 90.
- the 1,4-cis polybutadiene according to an embodiment of the present invention is the content of the cis (cis) bond in the 1,4-cis polybutadiene measured by Fourier transform infrared spectroscopy, specifically cis-1,4
- the content of the bond may be 95% or more, more specifically 96% or more.
- linearity may be increased to improve wear resistance and crack resistance of the rubber composition when blended into the rubber composition.
- the 1,4-cis polybutadiene according to an embodiment of the present invention cis-1 together with -S / R, PDI, weight average molecular weight (Mw), and number average molecular weight (Mn)
- Mw weight average molecular weight
- Mn number average molecular weight
- the 1,4-cis polybutadiene has a PDI of 3 or less, a weight average molecular weight (Mw) of 400,000 to 2,500,000 g / mol, a number average molecular weight (Mn) of 100,000 to 1,000,000 g / mol, and a cis in the polymer. 95% or more, more specifically, 96% or more may be included. More specifically, the PDI is 2.35 to 2.5, the weight average molecular weight (Mw) is 1,100,000 to 2,300,000 g / mol, the number average molecular weight (Mn) is 500,000 to 900,000 g / mol, and the content of cis-1,4 bond in the polymer May be more than 96%.
- the 1,4-cis polybutadiene according to an embodiment of the present invention when applied to the rubber composition can improve the mechanical properties, elastic modulus and workability for the rubber composition more balanced.
- the 1,4-cis polybutadiene has a PDI of 3 or less, a weight average molecular weight (Mw) of 400,000 to 2,500,000 g / mol, a number average molecular weight (Mn) of 100,000 to 1,000,000 g / mol,
- the Mooney viscosity may be 30 to 90, the content of cis-1,4 bond in the polymer is 95% or more, more specifically, the PDI is 2.35 to 2.5, the weight average molecular weight (Mw) is 1,100,000 to 2,300,000 g / mol
- the number average molecular weight (Mn) is 500,000 to 900,000g / mol, the Mooney viscosity at 100 °C °C 70 to 90, the content of cis-1,4 bond in the polymer may be 96% or more.
- 1,4-cis polybutadiene according to an embodiment of the present invention having the physical properties as described above, the step of preparing a mixture of a molecular weight modifier and a 1,3-butadiene or butadiene derivative as a monomer (step 1 ); 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 (step 2).
- MMAO modified methylaluminoxane
- halogen compound a halogen compound
- an aliphatic hydrocarbon solvent step 2
- a method for preparing 1,4-cis polybutadiene and the catalyst composition useful for preparing 1,4-cis polybutadiene are provided, respectively.
- step 1 in the method for producing 1,4-cis polybutadiene is a step of preparing a mixture of a molecular weight regulator and a monomer.
- the molecular weight regulator is not added to the catalyst composition, but separately with the monomer. By mixing, the molecular weight can be controlled quickly in the production process of 1,4-cis polybutadiene 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 amount of the molecular weight modifier may vary depending on the amount of impurities and the amount of moisture.
- 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 a lanthanum-based rare earth element-containing compound, more specifically 1 to 50 moles.
- the monomer may be used without particular limitation as long as it is usually used in the production of 1,4-cis polybutadiene.
- the monomer may be 1,3-butadiene or a derivative thereof, and more specifically, 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene, or 2-ethyl-1,3 Butadiene and the like, and any one or a mixture of two or more thereof may be used.
- the monomer in addition to the monomer, other monomers copolymerizable with the monomer and the conjugated diene monomer, including the conjugated diene monomer, may optionally be further used.
- the other monomers, including conjugated diene-based monomers that are additionally used may be used in an appropriate amount in consideration of the physical properties of the final 1,4-cis polybutadiene.
- the conjugated diene monomer that can be additionally used is 2-methyl-1,3-pentadiene, 1,3-pentadiene, 3-methyl-1,3-pentadiene, 4-methyl-1,3-penta Dienes, 1,3-hexadiene, 2,4-hexadiene, and the like, and any one or a mixture of two or more thereof may be used.
- said other monomer which can be used further specifically, styrene, p-methyl styrene, (alpha) -methylstyrene, 1-vinyl naphthalene, 3-vinyl toluene, ethyl vinylbenzene, divinylbenzene, 4-cyclohexyl styrene, 2 Aromatic vinyl monomers such as 4,6-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 for the preparation of 1,4-cis polybutadiene.
- step 2 is a mixture prepared in step 1, a lanthanum-based rare earth element-containing compound, modified methylaluminoxane (MMAO), A polymerization reaction is carried out using a catalyst composition comprising a halogen compound and an aliphatic hydrocarbon solvent.
- a catalyst composition comprising a halogen compound and an aliphatic hydrocarbon solvent.
- 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 method for preparing 1,4-cis polybutadiene according to an embodiment of the present invention unlike the conventional catalyst composition for preparing 1,4-cis polybutadiene, comprises diisobutylaluminum hydride (DIBAH).
- DIBAH diisobutylaluminum hydride
- the premixing is performed instead of the prepolymerization, 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 the butadiene.
- the lanthanum-based rare earth element-containing compound may be a compound including any one or two or more elements of 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.
- 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.
- the hydrocarbon solvent include aliphatic hydrocarbon solvents such as saturated aliphatic hydrocarbons having 4 to 10 carbon atoms such as pentane, hexane and heptane or 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
- 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 are not simultaneously hydrogen atoms It may be a neodymium compound.
- 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, specifically, may be prepared using alkyl aluminum other than trimethylaluminum and trimethylaluminum.
- the alkyl aluminum may be triisobutyl aluminum, triethyl aluminum, trihexyl aluminum, trioctyl aluminum, or the like, and any one or a mixture of two or more thereof may be used.
- 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 according to an embodiment of the present invention may include the above-mentioned components in an optimal amount so as to exhibit better catalytic activity during the polymerization reaction for 1,4-cis polybutadiene formation.
- the catalyst composition may include 0.01 to 0.25 mmol, specifically 0.02 to 0.20 mmol, more specifically 0.02 to 0.10 mmol of the lanthanum-based rare earth element-containing compound based on 100 g of the monomer.
- the catalyst composition may include the modified methylaluminoxane described above with respect to 1.0 mol (mol) of the lanthanum-based rare earth element-containing compound at a molar ratio of 5.0 to 200, and more specifically, at a molar ratio of 10 to 100. Can be.
- the catalyst composition may include the 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 the molar ratio of 2 to 6.
- the catalyst composition may include the aliphatic hydrocarbon-based solvent in a molar ratio of 20 to 20,000 with respect to 1 mole of the lanthanum-based rare earth element-containing compound, and more specifically, may include a molar ratio of 100 to 1,000.
- the catalyst composition according to an embodiment of the present invention is modified methyl aluminoxane 5.0 to 200 with respect to 1 mol of the 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 a lanthanum-based rare earth element-containing compound 0.01 to 0.25 mmol, modified methyl aluminoxane 0.1 to 25.0 mmol, halogen compounds 0.02 to 1.5 mmol, and aliphatic hydrocarbon based on 100g of monomer Solvent in an amount of 10 to 180 mmol.
- the catalyst composition may be used in an amount of 0.01 to 0.05 mmol of lanthanum-based rare earth element, 0.1 to 5.0 mmol of modified methylaluminoxane, 0.03 to 0.10 mmol of halogen compound, and 10 to 180 mmol of aliphatic hydrocarbon solvent based on 100 g of monomer. It may include.
- the catalyst composition according to an embodiment of the present invention is a lanthanum-based rare earth element-containing compound 0.01 to 0.25 mmol with respect to 100 g of the monomer, modified methyl
- a preliminary mixture comprising aluminoxane 0.05 to 50.0 mmol, a halogen compound 0.01 to 2.5 mmol, and an aliphatic hydrocarbon solvent 2 to 200 mmol, or 5 to 200 mmol
- the lanthanum-based rare earth element-containing compound is R 1 is a linear or branched alkyl group of 6 to 12 carbon atoms
- R 2 and R 3 are each independently a hydrogen atom or a linear or branched alkyl group of 2 to 6 carbon atoms, provided that R 2 and R 3 are hydrogen
- the modified methylaluminoxane may contain at least 50 mol% of the methyl group of
- 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 catalytic activity of 10,000 kg [polymer] / mol [Nd] ⁇ h or more during 5 to 60 minutes of polymerization within a temperature range of 20 ° C. to 90 ° C.
- the catalytic activity is a value obtained from the molar ratio of the lanthanum series rare earth element-containing compound, more specifically, the neodymium compound of Formula 1, relative to the total amount of diene polymers produced.
- 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, even at a low temperature of about 20 °C to 30 °C can implement a 100% conversion of the polymer for a short time. 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 to 60 minutes until the 1,4-cis polybutadiene 100% conversion, specifically 10 to 30 minutes May be performed for minutes.
- the produced 1,4-cis polybutadiene can be obtained by adding a lower alcohol, such as methyl alcohol or ethyl alcohol, or by adding steam.
- the method for preparing 1,4-cis polybutadiene according to an embodiment of the present invention may further include a precipitation and separation process for 1,4-cis polybutadiene prepared after the polymerization reaction.
- the filtration, separation and drying process for the precipitated 1,4-cis polybutadiene may be carried out according to a conventional method.
- 1,4-cis polybutadiene specifically, the lanthanum-based rare earth element-containing compound, more specifically includes an active organic metal moiety derived from a catalyst comprising a neodymium compound of formula (1)
- Neodymium catalyzed 1,4-cis polybutadiene more specifically neodymium catalyzed 1,4-cis polybutadiene comprising 1,3-butadiene monomeric units.
- the diene polymer may be 1,4-cis polybutadiene composed of only 1,3-butadiene monomer.
- 1,4-cis polybutadiene produced by the above-described manufacturing method has excellent physical properties including high linearity as described above. Accordingly, according to another embodiment of the present invention there is provided a rubber composition comprising the 1,4-cis polybutadiene.
- the rubber composition may include 10 wt% to 100 wt% of the 1,4-cis polybutadiene and 0 to 90 wt% of the rubber component.
- the content of the 1,4-cis polybutadiene 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 by appropriately selecting and blending within a 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.
- 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
- 1,4-cis polybutadiene having a high linearity with a value of -S / R at 100 ° C. of 1 or more, resistance properties, in particular rolling resistance or rolling resistance, are reduced, and exhibit significantly improved fuel efficiency. As such, it can be useful for tires that require low resistance properties and good fuel economy properties.
- the first mixed solution was added to the dropping funnel, and dropped to the second mixed solution at room temperature to prepare a third mixed solution. After the addition was completed, the mixture was stirred at room temperature 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 for 10 minutes, and then the solution obtained by filtration was removed by distillation under reduced pressure. As a result, 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 to prepare a third mixed solution. After the addition was completed, the mixture was stirred at room temperature 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 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.
- the vacuum and nitrogen were alternately added to a completely dried 10L high pressure reactor and filled with nitrogen again to bring about normal pressure (1 ⁇ 0.05 atm).
- 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 resultant mixed solution was subjected to a second heat treatment at about 70 ° C. for about 2 minutes to obtain a molecular weight regulator and A mixture of 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 resulting mixture in 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 and subjected to a polymerization reaction at 70 ° C. for about 40 minutes to obtain 1,4-cis polybutadiene.
- 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).
- Mooney Viscosity was obtained under the conditions of Rotor Speed 2 ⁇ 0.02 rpm at 100 ° C using Large Rotor with Monsanto MV2000E for the 1,4-cis polybutadiene prepared in Examples and Comparative Examples. Measured. At this time, the sample used was allowed to stand at room temperature (23 ⁇ 3 °C) for more than 30 minutes, 27 ⁇ 3g was taken and filled into the die cavity, and the platen was operated to apply a torque 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 even in a short time even at low temperature (30 °C). On the contrary, 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.
- CB Carbon Black (N330 TM, manufactured by Showa Cabot K.K)
- the rubber compositions prepared in Examples 3 and 5 were vulcanized at 145 ° C. for 45 minutes, followed by modulus at 10% elongation, 100% elongation, and 300% elongation (M-10%, M-100%). And M-300%) were measured respectively.
- Example 3 After the rubber compositions of Example 3 and Comparative Example 5 were each vulcanized at 145 ° C., the tensile strength of the vulcanizate was measured.
- Example 3 After the rubber compositions prepared in Example 3 and Comparative Example 5 were vulcanized at 145 ° C. for 45 minutes, the elongation of the vulcanizate was measured.
- the tan ⁇ property which is most important for the low fuel efficiency, was performed using a German Gabo DMTS 500N, and the temperature sweep test was performed at a frequency of 10 Hz, 5% prestrain, and 3% dynamic strain at 2 ° C / min.
- the index value of each measured physical property shows the relative ratio based on 100 measured physical property value in the rubber composition manufactured using Lanxess CB24 as a reference material instead of raw rubber at the time of manufacturing rubber composition. .
- Example 3 Comparative Example 5 Main catalyst Nd compound of Preparation Example 2 Nd (neodecanoate) 3 ⁇ (neodecanoic acid) (NDH) Cis-1,4 bond content (%) 98.4 94.7 Mn (x10 5 g / mol) 4.3 1.70 Mw (x10 5 g / mol) 9.9 7.30 Mw / Mn 2.31 4.36 ML1 + 4 (@ 100 ° C) 43.5 42.4 -S / R 1.0423 0.6228 M-10% 6.9 3.7 M-100% 22 18 M-300% 94 87 M-300% index 92 89
- Tensile stress 146 157 Tensile stress index 101 96 Elongation 402 446 Elongation index 106 105 Tan ⁇ @ 0 °C 0.178 0.199 Tan ⁇ @ 0 °C index 105 113 Tan ⁇ @ 60 °C 0.135 0.146 Tan ⁇ @ 60 °C index 95 91
- the rubber composition comprising the 1,4-cis polybutadiene of Example 3 according to the present invention exhibited excellent mechanical and resistance properties compared to Comparative Example 5, in particular from the effect of improving the rolling resistance and rolling resistance It can be seen that it shows excellent fuel economy characteristics.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
Description
실시예 3 고무 조성물 | 비교예 5 고무조성물 | ||||
중량부 | 투입량(g) | 중량부 | 투입량(g) | ||
원료고무 | 실시예 3의 중합체 | 100 | 140 | - | - |
비교예 5의 중합체1) | - | - | 100 | 140 | |
가황촉진제 | 산화아연 | 3 | 4.2 | 3 | 4.2 |
가황제 | 유황 | 1.5 | 2.1 | 1.5 | 2.1 |
분산제 | 스테아르산 | 1 | 1.4 | 1 | 1.4 |
보강성 충진제 | CB 2) | 40 | 56 | 40 | 56 |
가황촉진제 | TBBS 3) | 0.7 | 0.98 | 0.7 | 0.98 |
실시예3 | 비교예5 | |
주촉매 | 제조예 2의 Nd 화합물 | Nd(neodecanoate)3·(neodecanoic acid) (NDH) |
시스-1,4 결합 함량(%) | 98.4 | 94.7 |
Mn (x105g/mol) | 4.3 | 1.70 |
Mw (x105g/mol) | 9.9 | 7.30 |
Mw/Mn | 2.31 | 4.36 |
ML1+4(@100 ℃) | 43.5 | 42.4 |
-S/R | 1.0423 | 0.6228 |
M-10% | 6.9 | 3.7 |
M-100% | 22 | 18 |
M-300% | 94 | 87 |
M-300% index | 92 | 89 |
Tensile stress | 146 | 157 |
Tensile stress index | 101 | 96 |
Elongation | 402 | 446 |
Elongation index | 106 | 105 |
Tanδ @ 0 ℃ | 0.178 | 0.199 |
Tanδ @ 0 ℃ index | 105 | 113 |
Tanδ @ 60 ℃ | 0.135 | 0.146 |
Tanδ @ 60 ℃ index | 95 | 91 |
Claims (23)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017513412A JP2017535624A (ja) | 2014-11-20 | 2015-11-18 | 共役ジエン系重合体 |
EP15860487.6A EP3222639B1 (en) | 2014-11-20 | 2015-11-18 | Conjugated diene-based polymer |
US15/503,900 US10040876B2 (en) | 2014-11-20 | 2015-11-18 | Conjugated diene-based polymer |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20140162931 | 2014-11-20 | ||
KR10-2014-0162931 | 2014-11-20 | ||
KR20140162935 | 2014-11-20 | ||
KR10-2014-0162935 | 2014-11-20 | ||
KR1020150161320A KR20160060562A (ko) | 2014-11-20 | 2015-11-17 | 공액 디엔계 중합체 |
KR10-2015-0161320 | 2015-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016080765A1 true WO2016080765A1 (ko) | 2016-05-26 |
Family
ID=56014216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2015/012425 WO2016080765A1 (ko) | 2014-11-20 | 2015-11-18 | 공액 디엔계 중합체 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2016080765A1 (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990071124A (ko) * | 1998-02-27 | 1999-09-15 | 박찬구 | 고 1,4-시스 함량을 갖는 폴리부타디엔의 분지도 조절방법 |
JP2004211048A (ja) * | 2002-11-11 | 2004-07-29 | Ube Ind Ltd | シス−1,4−ポリブタジエンの製造方法および組成物 |
US20120100934A1 (en) * | 2010-10-25 | 2012-04-26 | Acushnet Company | Blends of linear and branched neodymium-catalyzed rubber formulations for use in golf balls |
KR101363593B1 (ko) * | 2012-08-09 | 2014-02-19 | 서강대학교산학협력단 | 염료감응 태양전지용 광전극, 이의 제조 방법, 및 이를 포함하는 염료감응 태양전지 |
KR20140129048A (ko) * | 2012-02-27 | 2014-11-06 | 가부시키가이샤 브리지스톤 | 고-시스 폴리디엔들의 제조 방법들 |
-
2015
- 2015-11-18 WO PCT/KR2015/012425 patent/WO2016080765A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990071124A (ko) * | 1998-02-27 | 1999-09-15 | 박찬구 | 고 1,4-시스 함량을 갖는 폴리부타디엔의 분지도 조절방법 |
JP2004211048A (ja) * | 2002-11-11 | 2004-07-29 | Ube Ind Ltd | シス−1,4−ポリブタジエンの製造方法および組成物 |
US20120100934A1 (en) * | 2010-10-25 | 2012-04-26 | Acushnet Company | Blends of linear and branched neodymium-catalyzed rubber formulations for use in golf balls |
KR20140129048A (ko) * | 2012-02-27 | 2014-11-06 | 가부시키가이샤 브리지스톤 | 고-시스 폴리디엔들의 제조 방법들 |
KR101363593B1 (ko) * | 2012-08-09 | 2014-02-19 | 서강대학교산학협력단 | 염료감응 태양전지용 광전극, 이의 제조 방법, 및 이를 포함하는 염료감응 태양전지 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2019078459A1 (ko) | 변성 공액디엔계 중합체의 제조방법 | |
WO2018030645A1 (ko) | 변성 공액디엔계 중합체, 이의 제조방법 및 이를 포함하는 고무 조성물 | |
KR101781699B1 (ko) | 공액 디엔의 중합용 촉매 조성물 | |
WO2018128290A1 (ko) | 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 | |
WO2020130740A1 (ko) | 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 | |
EP3222640B1 (en) | Method for preparing conjugated diene-based polymer | |
WO2019103383A1 (ko) | 변성 공액디엔계 중합체 및 이의 제조방법 | |
EP3222639B1 (en) | Conjugated diene-based polymer | |
WO2019088634A1 (ko) | 공액디엔 중합용 촉매의 제조방법, 촉매 및 이를 이용한 공액디엔계 중합체의 제조방법 | |
WO2019083092A1 (ko) | 연속식 중합에 의한 공액디엔계 중합체의 제조방법 | |
WO2015057021A1 (ko) | 변성 공역디엔계 중합체, 이의 제조방법, 및 이를 포함하는 고무 조성물 | |
WO2016080764A1 (ko) | 공액 디엔의 중합용 촉매 조성물 | |
WO2016080766A1 (ko) | 공액 디엔계 중합체의 제조방법 | |
WO2019083173A1 (ko) | 변성 공액디엔계 중합체 및 이의 제조방법 | |
WO2017061831A1 (ko) | 변성 공액디엔계 중합체, 이의 제조방법 및 이를 포함하는 고무 조성물 | |
WO2021010718A1 (ko) | 변성 공액디엔계 중합체, 이의 제조방법 및 이를 포함하는 고무 조성물 | |
WO2016209046A1 (ko) | 공액 디엔계 중합체 제조용 촉매 조성물 및 이를 이용하여 제조된 공액 디엔계 중합체 | |
WO2016209042A1 (ko) | 공액 디엔계 중합체 제조용 촉매 조성물 및 이를 이용하여 제조된 공액 디엔계 중합체 | |
WO2016085102A1 (ko) | 말단 기능성 공액 디엔계 중합체 및 이의 제조 방법 | |
WO2016080765A1 (ko) | 공액 디엔계 중합체 | |
WO2018008912A1 (ko) | 변성제, 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 | |
WO2020130741A1 (ko) | 변성 공액디엔계 중합체의 제조방법 | |
WO2019093579A1 (ko) | 연속식 중합에 의한 공액디엔계 중합체의 제조방법 | |
WO2020130738A1 (ko) | 변성 공액디엔계 중합체 및 이의 제조방법 | |
WO2023158211A1 (ko) | 촉매 조성물 제조방법 및 공액디엔계 중합체 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15860487 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15503900 Country of ref document: US |
|
REEP | Request for entry into the european phase |
Ref document number: 2015860487 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2015860487 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2017513412 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |