WO2022031002A1 - 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 - Google Patents
변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 Download PDFInfo
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- WO2022031002A1 WO2022031002A1 PCT/KR2021/010226 KR2021010226W WO2022031002A1 WO 2022031002 A1 WO2022031002 A1 WO 2022031002A1 KR 2021010226 W KR2021010226 W KR 2021010226W WO 2022031002 A1 WO2022031002 A1 WO 2022031002A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/22—Incorporating nitrogen atoms into the molecule
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
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- 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
- B60C1/0016—Compositions of the tread
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/25—Incorporating silicon atoms into the molecule
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/30—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule
- C08C19/42—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups
- C08C19/44—Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/10—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl-aromatic monomers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
- C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
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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
- C08F8/00—Chemical modification by after-treatment
- C08F8/40—Introducing phosphorus atoms or phosphorus-containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L15/00—Compositions of rubber derivatives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F236/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F236/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F236/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F236/06—Butadiene
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to a modified conjugated diene-based polymer having improved rotational resistance, processability and abrasion resistance, and a rubber composition comprising the same.
- a conjugated diene-based polymer having low running resistance, excellent abrasion resistance and tensile properties, and adjustment stability typified by wet road resistance is required as a rubber material for tires.
- conjugated diene-based polymers or copolymers such as styrene-butadiene rubber (hereinafter referred to as SBR) or butadiene rubber (hereinafter referred to as BR) have been manufactured by emulsion polymerization or solution polymerization and are used as rubber for tires. .
- SBR styrene-butadiene rubber
- BR butadiene rubber
- the greatest advantage of solution polymerization compared to emulsion polymerization is that the content of vinyl structure and styrene content defining rubber properties can be arbitrarily adjusted, and molecular weight and physical properties can be adjusted by coupling or modification. that it can be adjusted. Therefore, it is easy to change the structure of the finally manufactured SBR or BR, and it is possible to reduce the movement of the chain ends by bonding or modifying the chain ends, and to increase the binding force with fillers such as silica or carbon black. It is widely used as a rubber material for
- the solution polymerization SBR is prepared by using an anionic polymerization initiator, and a technique for introducing a functional group at the end by binding or modifying the chain end of the formed polymer using various modifiers is used.
- U.S. Patent No. 4,397,994 discloses a technique in which an active anion at the chain end of a polymer obtained by polymerizing styrene-butadiene in a non-polar solvent using alkyllithium, a monofunctional initiator, is combined using a binder such as a tin compound. did
- the required physical properties of the tire such as running resistance can be adjusted by increasing the vinyl content in the SBR.
- the vinyl content is high, braking performance and abrasion resistance are disadvantageous, thus Although the styrene content in SBR should be maintained above a certain level, there is a problem in that the effect expressed from the high vinyl content does not appear in this case.
- Patent Document 1 JP Patent Publication Hei 8-193147 (July 30, 1996)
- Patent Document 2 US 4,397,994 A (1983. 08. 09.)
- each of the first and second polymer chains includes a unit derived from a modification initiator and includes units derived from a heterogeneous modifier having a different number of functional groups having active polymer reaction activity.
- An object of the present invention is to provide a modified conjugated diene-based polymer capable of improving abrasion resistance and processability when a rubber composition is applied by controlling molecular weight distribution and branching degree while having a high molecular weight, including polymer chains.
- an object of the present invention is to provide a rubber composition excellent in processability and abrasion resistance, comprising the modified conjugated diene-based polymer and a filler.
- the present invention comprises a first polymer chain and a second polymer chain each comprising a repeating unit derived from a conjugated diene-based monomer and a unit derived from a nitrogen-containing modification initiator,
- the first polymer chain includes an aminoalkoxysilane-based modifier-derived unit at at least one end
- the second polymer chain includes an aminoepoxy-based modifier-derived unit at at least one end
- the aminoalkoxysilane-based modifier-derived unit is in the molecule. It provides a modified conjugated diene-based polymer comprising 6 or more alkoxy groups.
- the present invention provides a rubber composition comprising the modified conjugated diene-based polymer and a filler.
- the modified conjugated diene-based polymer according to the present invention is prepared using a heterogeneous modifier having a different number of functional groups having a reactive activity with the active polymer while each including a filler affinity functional group, so that the first polymer chain and the first polymer chain having different degrees of branching are different from each other.
- a heterogeneous modifier having a different number of functional groups having a reactive activity with the active polymer while each including a filler affinity functional group, so that the first polymer chain and the first polymer chain having different degrees of branching are different from each other.
- the rubber composition according to the present invention may be excellent in both abrasion resistance and processability by including the modified conjugated diene-based polymer.
- polymer refers to a polymer compound prepared by polymerizing monomers, whether of the same or different type.
- the generic term polymer thus encompasses the terms homopolymer and copolymer, which are commonly used to refer to polymers prepared from only one monomer.
- '1,2-vinyl bond content' refers to butadiene contained at positions 1,2 in the polymer chain, based on the conjugated diene monomer (butadiene, etc.) portion (total amount of polymerized butadiene) in the polymer. refers to the percentage by mass (or weight) of
- alkyl group' may refer to a monovalent aliphatic saturated hydrocarbon, and linear alkyl groups such as methyl, ethyl, propyl and butyl and isopropyl, sec-butyl, ter It may mean including all branched alkyl groups such as tert-butyl and neopentyl.
- alkenyl group' may refer to a monovalent aliphatic unsaturated hydrocarbon including one or two or more double bonds.
- 'alkynyl group' may mean a monovalent aliphatic unsaturated hydrocarbon including one or two or more triple bonds.
- 'alkylene group' may refer to a divalent aliphatic saturated hydrocarbon such as methylene, ethylene, propylene, and butylene.
- 'aryl group' may mean an aromatic hydrocarbon, and also a monocyclic aromatic hydrocarbon in which one ring is formed, or a polycyclic aromatic hydrocarbon in which two or more rings are bonded. may be meant to include all of them.
- heterocyclic group' refers to a carbon atom in a cycloalkyl group or an aryl group in which one or more hetero atoms are substituted, for example, it may mean including both a heterocycloalkyl group or a heteroaryl group.
- compositions claimed through use of the term 'comprising' unless stated to the contrary, contain any additional additives, adjuvants, or compounds, whether polymeric or otherwise. may include
- the term 'consisting essentially of' excludes from the scope of any subsequent description any other component, step or procedure, except as not essential to operability.
- the term 'consisting of' excludes any component, step or procedure not specifically described or listed.
- the 'glass transition temperature (Tg)' is a modified conjugated diene-based polymer as a sample, and in accordance with ISO 22768:2006, a differential scanning calorimeter (trade name "DSCQ100" manufactured by TA) is used, and nitrogen 50mL/min. A 70-6DSC curve was recorded while the temperature was raised from -80°C to 10°C/min under the flow of, and the peak top (Inflection point) of the DSC differential curve was measured as the glass transition temperature.
- DSCQ100 differential scanning calorimeter
- 'weight average molecular weight (Mw)', 'number average molecular weight (Mn)' and 'molecular weight distribution (MWD)' are measured through gel permeation chromatohraph (GPC) analysis, and measured by checking the molecular weight distribution curve.
- GPC gel permeation chromatohraph
- PDI, MWD, Mw/Mn is calculated from each of the measured molecular weights.
- the GPC uses a combination of two PLgel Olexis (Polymer Laboratories) columns and one PLgel mixed-C (Polymer Laboratories) column, and when calculating molecular weight, the GPC reference material (Standard material) is PS (polystyrene)
- the GPC measurement solvent is prepared by mixing 2 wt% of an amine compound with tetrahydrofuran.
- the coupling number (Coupling Number, CN) is a modified conjugated diene prepared by first adding a denaturant and collecting some polymers before performing the first denaturation reaction to obtain the peak molecular weight of the polymer (Mp 1 ), and then finally denaturing
- the peak molecular weight (Mp 2 ) of the polymer was obtained and calculated by the following Equation (1).
- '1,2-vinyl bond content means that the content of vinyl (Vinyl) in each polymer is measured and analyzed using Varian VNMRS 500 MHz NMR, and when measuring NMR, the solvent is 1,1,2,2-tetra Chloroethane was used, the solvent peak was calculated as 6.0 ppm, 7.2 ⁇ 6.9 ppm is random styrene, 6.9 ⁇ 6.2 ppm is block styrene, 5.8 ⁇ 5.1 ppm is 1,4-vinyl and 1,2-vinyl, 5.1 ⁇ 4.5 ppm is measured by calculating the 1,2-vinyl bond content in the entire polymer using the peak of 1,2-vinyl.
- 'Mooney viscosity (MV)' and 'Mooney stress relaxation rate (-S/R)' are the Mooney viscosity (MV, (ML1+4, @100°C MU) is MV-2000 (ALPHA Technologies) Rotor speed 2 ⁇ 0.02 rpm at 100°C using a large rotor, and the sample used at this time is left at room temperature (23 ⁇ 3°C) for more than 30 minutes, then 27 ⁇ 3 g is collected and stored inside the die cavity. After filling, operate the platen and measure for 4 minutes After measuring the Mooney viscosity, measure the slope of the Mooney viscosity change that appears as the torque is released, and use the absolute value as the Mooney stress relaxation rate.
- 'N atom content' may be, for example, measured through an NSX analysis method, and the NSX analysis method is measured using a trace nitrogen quantitative analyzer (NSX-2100H).
- a trace nitrogen quantitative analyzer (NSX-2100H).
- the trace nitrogen quantitative analyzer turn on the trace nitrogen quantitative analyzer (Auto sampler, Horizontal furnace, PMT & Nitrogen detector), Ar at 250 ml/min, O 2 at 350 ml/min, ozonizer 300 ml/ Set the carrier gas flow rate to min, set the heater to 800°C, and wait for about 3 hours to stabilize the analyzer.
- a calibration curve in the range of 5 ppm, 10 ppm, 50 ppm, 100 ppm and 500 ppm was prepared using Nitrogen standard (AccuStandard S-22750-01-5 ml), and the area corresponding to each concentration was obtained. Then, draw a straight line using the ratio of concentration to area. Thereafter, a ceramic boat containing 20 mg of the sample is placed on the auto sampler of the analyzer to obtain an area, and the N content is calculated using the area of the sample obtained and the calibration curve. At this time, the sample is a modified conjugated diene-based polymer in which the solvent is removed by putting it in hot water heated with steam and stirring, and the residual monomer, residual modifier, and oil are removed.
- 'Si atom content' was measured using an inductively coupled plasma emission analyzer (ICP-OES; Optima 7300DV) as an ICP analysis method.
- ICP-OES inductively coupled plasma emission analyzer
- Optima 7300DV inductively coupled plasma emission analyzer
- about 0.7 g of the sample is placed in a platinum crucible (Pt crucible), and about 1 mL of concentrated sulfuric acid (98 wt%, Electronic grade) is added, heated at 300° C. for 3 hours, and the sample is heated in an electric furnace (Thermo Scientific, Lindberg Blue M), after conducting conversation with the program of steps 1 to 3 below,
- step 1 initial temp 0°C,(temp/hr) 180°C/hr, temp(holdtime) 180°C (1hr)
- step 2 initial temp 180°C, rate (temp/hr) 85 °C/hr, temp(holdtime) 370°C (2hr)
- step 3 initial temp 370°C, rate (temp/hr) 47 °C/hr, temp(holdtime) 510°C (3hr)
- the present invention is prepared by using a heterogeneous modifier having a different number of functional groups having a reactive activity with the active polymer while including a filler affinity functional group, respectively, by including a first polymer chain and a second polymer chain having different degrees of branching from each other.
- a modified conjugated diene-based polymer having excellent balance in physical properties and processability.
- the modified conjugated diene-based polymer includes a first polymer chain and a second polymer chain each including a repeating unit derived from a conjugated diene-based monomer and a unit derived from a nitrogen-containing modification initiator, and the first polymer
- the chain includes an aminoalkoxysilane-based modifier-derived unit at at least one end
- the second polymer chain includes an aminoepoxy-based modifier-derived unit at at least one end
- the aminoalkoxysilane-based modifier includes at least six alkoxyl groups in the molecule. It is characterized in that it contains a group.
- the modified conjugated diene-based polymer is prepared by the manufacturing method described below in which the active polymer and a heterogeneous modifier having a different number of reactive groups are used to sequentially modify the number of functional groups.
- the active polymer and a heterogeneous modifier having a different number of reactive groups are used to sequentially modify the number of functional groups.
- the first polymer chain and the second polymer chain each include a unit derived from a nitrogen-containing modification initiator and a repeating unit derived from a conjugated diene-based monomer, and the first polymer chain is an aminoalkoxysilane-based modifier-derived unit at at least one end.
- the second polymer chain may include an aminoepoxy-based modifier-derived unit at at least one terminal end.
- the conjugated diene-based monomer-derived repeating unit may mean a repeating unit formed during polymerization of the conjugated diene-based monomer, and the modifier-derived unit is a reaction or couple between an active polymer prepared by polymerization of a conjugated diene-based monomer and a modifier. It may mean a functional group derived from a denaturant present at at least one end of the active polymer through a ring.
- the conjugated diene-based monomer is 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, isoprene, 2 It may be at least one selected from the group consisting of -phenyl-1,3-butadiene and 2-halo-1,3-butadiene (halo means a halogen atom).
- first polymer chain and the second polymer chain may each further include a repeating unit derived from an aromatic vinyl-based monomer, and in this case, the amount of the repeating unit derived from the aromatic vinyl monomer is 30 wt% or less, or 10 wt% to 25 wt% and, within this range, there is an excellent effect of balancing the rolling resistance and the wet road resistance.
- the aromatic vinyl monomer is, for example, styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, 4-(p-methylphenyl)styrene and 1 It may be at least one selected from the group consisting of -vinyl-5-hexylnaphthalene.
- each of the first polymer chain and the second polymer chain may further include a repeating unit derived from a diene-based monomer having 1 to 10 carbon atoms together with the repeating unit derived from the conjugated diene-based monomer.
- the repeating unit derived from the diene-based monomer may be a repeating unit derived from a diene-based monomer different from the conjugated diene-based monomer, and the diene-based monomer different from the conjugated diene-based monomer may be, for example, 1,2-butadiene. .
- the modified conjugated diene-based polymer includes a first polymer chain and a second polymer chain, and includes a first polymer chain having a relatively high degree of branching and a second polymer chain having a low degree of branching so that the overall degree of branching is appropriate.
- the first polymer chain may include a unit derived from a nitrogen-containing modification initiator; Containing a repeating unit derived from a conjugated diene-based monomer and a unit derived from an aminoalkoxysilane-based modifier, and further comprising a repeating unit derived from an aromatic vinyl-based monomer if necessary, prepared by polymerizing a conjugated diene-based monomer as in the manufacturing method to be described later It is prepared by reacting the active polymer with the aminoalkoxysilane-based modifier containing 6 or more alkoxy groups as polymer-modifying functional groups in the molecule for a certain period of time, so that the degree of branching may be high.
- the second polymer chain may include a unit derived from a nitrogen-containing modification initiator; It contains a repeating unit derived from a conjugated diene-based monomer and a unit derived from an aminoepoxy-based modifier, and further includes a repeating unit derived from an anti-aromatic vinyl-based monomer if necessary, and is modified with an aminoalkoxysilane-based modifier as in the manufacturing method to be described later.
- the reaction is prepared by reacting an unmodified active polymer with an epoxy group or an epoxy group, which is a modified functional group, an aminoepoxy modifier having 4 or less alkoxy groups in the molecule, so that the degree of branching may be relatively low and linearity may be high.
- the nitrogen-containing modification initiator may be prepared by reacting a nitrogen-containing compound with an organometallic compound, and specifically, an amino group, an amide group, an imino group, an imidazole group, or a pyrimidyl group unsubstituted or substituted with an intramolecular substituent.
- styrene-based compound including a cyclic amino group, wherein the substituent is an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an alkylaryl group having 7 to 20 carbon atoms, It may be an arylalkyl group having 7 to 20 carbon atoms or an alkoxysilyl group having 1 to 10 carbon atoms.
- the nitrogen-containing compound may be a compound represented by Formula 1 below.
- R 1 to R 3 are each independently hydrogen; an alkyl group having 1 to 30 carbon atoms; an alkenyl group having 2 to 30 carbon atoms; an alkynyl group having 2 to 30 carbon atoms; A heteroalkyl group having 1 to 30 carbon atoms, a heteroalkenyl group having 2 to 30 carbon atoms; a heteroalkynyl group having 2 to 30 carbon atoms; a cycloalkyl group having 5 to 30 carbon atoms; an aryl group having 6 to 30 carbon atoms; Or a heterocyclic group having 3 to 30 carbon atoms,
- R 4 is a single bond; an alkylene group having 1 to 20 carbon atoms that is unsubstituted or substituted with a substituent; a cycloalkylene group having 5 to 20 carbon atoms that is unsubstituted or substituted with a substituent; Or an arylene group having 5 to 20 carbon atoms substituted or unsubstituted with a substituent, wherein the substituent is an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, or an aryl group having 5 to 20 carbon atoms,
- R 5 is an alkyl group having 1 to 30 carbon atoms; an alkenyl group having 2 to 30 carbon atoms; an alkynyl group having 2 to 30 carbon atoms; a heteroalkyl group having 1 to 30 carbon atoms; a heteroalkenyl group having 2 to 30 carbon atoms; a heteroalkynyl group having 2 to 30 carbon atoms; a cycloalkyl group having 5 to 30 carbon atoms; an aryl group having 6 to 30 carbon atoms; a heterocyclic group having 3 to 30 carbon atoms; Or a functional group represented by Formula 1a or Formula 1b,
- n is an integer of 1 to 5
- at least one of R 5 is a functional group represented by Formula 1a or Formula 1b, and when n is an integer of 2 to 5, a plurality of R 5 may be the same or different from each other,
- R 6 is an alkylene group having 1 to 20 carbon atoms which is unsubstituted or substituted with a substituent; a cycloalkylene group having 5 to 20 carbon atoms that is unsubstituted or substituted with a substituent; Or an arylene group having 5 to 20 carbon atoms substituted or unsubstituted with a substituent, wherein the substituent is an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, or an aryl group having 5 to 20 carbon atoms,
- R 7 and R 8 are each independently an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, or an alkylene group having 1 to 20 carbon atoms which is unsubstituted or substituted with an aryl group having 5 to 20 carbon atoms,
- R 9 is hydrogen; an alkyl group having 1 to 30 carbon atoms; an alkenyl group having 2 to 30 carbon atoms; an alkynyl group having 2 to 30 carbon atoms; a heteroalkyl group having 1 to 30 carbon atoms; a heteroalkenyl group having 2 to 30 carbon atoms; a heteroalkynyl group having 2 to 30 carbon atoms; a cycloalkyl group having 5 to 30 carbon atoms; an aryl group having 6 to 30 carbon atoms; It is a heterocyclic group having 3 to 30 carbon atoms,
- Z is an N, O or S atom, and when Z is O or S then R 9 is absent;
- R 10 is an alkylene group having 1 to 20 carbon atoms which is unsubstituted or substituted with a substituent; a cycloalkylene group having 5 to 20 carbon atoms that is unsubstituted or substituted with a substituent; Or an arylene group having 5 to 20 carbon atoms substituted or unsubstituted with a substituent, wherein the substituent is an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, or an aryl group having 5 to 20 carbon atoms,
- R 11 and R 12 are each independently an alkyl group having 1 to 30 carbon atoms; an alkenyl group having 2 to 30 carbon atoms; an alkynyl group having 2 to 30 carbon atoms; a heteroalkyl group having 1 to 30 carbon atoms; a heteroalkenyl group having 2 to 30 carbon atoms; a heteroalkynyl group having 2 to 30 carbon atoms; a cycloalkyl group having 5 to 30 carbon atoms; an aryl group having 6 to 30 carbon atoms; It is a heterocyclic group having 3 to 30 carbon atoms.
- R 1 to R 3 are each independently hydrogen; an alkyl group having 1 to 10 carbon atoms; an alkenyl group having 2 to 10 carbon atoms; or an alkynyl group having 2 to 10 carbon atoms, and R 4 is a single bond; or an unsubstituted alkylene group having 1 to 10 carbon atoms, and R 5 is an alkyl group having 1 to 10 carbon atoms; an alkenyl group having 2 to 10 carbon atoms; an alkynyl group having 2 to 10 carbon atoms; Or a functional group represented by Formula 1a or Formula 1b, in Formula 1a, R 6 is an unsubstituted alkylene group having 1 to 10 carbon atoms, and R 7 and R 8 are each independently an unsubstituted C 1 to C 10 group.
- R 9 is an alkyl group having 1 to 10 carbon atoms; a cycloalkyl group having 5 to 20 carbon atoms; an aryl group having 5 to 20 carbon atoms; or a heterocyclic group having 3 to 20 carbon atoms
- R 10 is an unsubstituted alkylene group having 1 to 10 carbon atoms
- R 11 and R 12 are each independently an alkyl group having 1 to 10 carbon atoms; a cycloalkyl group having 5 to 20 carbon atoms; an aryl group having 5 to 20 carbon atoms; Or it may be a heterocyclic group having 3 to 20 carbon atoms.
- the compound represented by Chemical Formula 1 may be a compound represented by the following Chemical Formulas 1-1 to 1-3.
- the organometallic compound may be an organoalkali metal compound, for example, may be at least one selected from an organolithium compound, an organosodium compound, an organopotassium compound, an organorubidium compound, and an organocesium compound.
- the organometallic compound is methyllithium, ethyllithium, isopropyllithium, n-butyllithium, sec-butyllithium, tert-butyllithium, n-decyllithium, tert-octyllithium, phenyllithium, 1-naphthyl It may be at least one selected from lithium, n-eicolithium, 4-butylphenyllithium, 4-tolylylithium, cyclohexyllithium, 3,5-di-n-heptylcyclohexyllithium, and 4-cyclopentyllithium.
- the aminoalkoxysilane-based modifier may be a compound containing 6 or more alkoxy groups in a molecule, and specifically, the aminoalkoxysilane-based modifier has 6 or more and 12 or less alkoxy groups in a molecule, more specifically 6 It may be a compound including more than 9 or less, and may be one or more selected from compounds represented by the following Chemical Formulas 2 to 4 by way of example.
- R 2a and R 2d are each independently a single bond, an alkylene group having 1 to 20 carbon atoms substituted or unsubstituted with a substituent; a cycloalkylene group having 5 to 20 carbon atoms that is unsubstituted or substituted with a substituent; Or an arylene group having 6 to 20 carbon atoms substituted or unsubstituted with a substituent, wherein the substituent is an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
- R 2b and R 2c are each independently of each other an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, a heteroalkyl group having 1 to 20 carbon atoms, a heteroalkenyl group having 2 to 20 carbon atoms, and a heteroalkenyl group having 2 to 20 carbon atoms.
- R 2e is an alkyl group having 1 to 10 carbon atoms, an allyl group having 2 to 10 carbon atoms, a monosubstituted, disubstituted or trisubstituted alkylsilyl group substituted with an alkyl group having 1 to 10 carbon atoms, a heterocyclic group having 2 to 10 carbon atoms, or - N-[R 2f -Si(OR 2g ) d (R 2h ) 3-d ] 2 ,
- R 2f is a single bond, a C 1 to C 20 alkylene group unsubstituted or substituted with a substituent; a cycloalkylene group having 5 to 20 carbon atoms that is unsubstituted or substituted with a substituent; Or an arylene group having 6 to 20 carbon atoms substituted or unsubstituted with a substituent, wherein the substituent is an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
- R 2g and R 2h are each independently an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, a heteroalkyl group having 1 to 20 carbon atoms, a heteroalkenyl group having 2 to 20 carbon atoms, a carbon number a heteroalkynyl group having 2 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms;
- d is an integer from 1 to 3
- a is an integer from 1 to 3
- b is 0 or 1
- c is 2 or 3
- a+c is 5 or 6 when b is 0 and when b is 1 R 2e is not -N-[R 2f -Si(OR 2g ) d (R 2h ) 3-d ] 2 ,
- R b2 to R b4 are each independently an alkylene group having 1 to 10 carbon atoms
- R b5 to R b8 are each independently an alkyl group having 1 to 10 carbon atoms
- R b12 to R b14 are each independently an alkylene group having 1 to 10 carbon atoms
- R b15 to R b18 are each independently an alkyl group having 1 to 10 carbon atoms
- n 1 , m 2 , m 3 and m 4 are each independently an integer of 1 to 3,
- R h1 and R h2 are each independently an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms,
- R h3 is a single bond or an alkylene group having 1 to 10 carbon atoms
- a 3 is -N[Si(R h4 R h5 R h6 )] 2 , wherein R h4 to R h6 are an alkoxy group having 1 to 10 carbon atoms .
- R 2a and R 2d are each independently a single bond or an alkylene group having 1 to 10 carbon atoms
- R 2b and R 2c are each independently an alkyl group having 1 to 10 carbon atoms, and 1 to 10 carbon atoms a heteroalkyl group, a cycloalkyl group having 5 to 10 carbon atoms, or an aryl group having 6 to 10 carbon atoms
- R 2e is a monosubstituted group substituted with an alkyl group having 1 to 10 carbon atoms, an allyl group having 2 to 10 carbon atoms, or an alkyl group having 1 to 10 carbon atoms.
- R 2f is a single bond, or an unsubstituted alkylene group having 1 to 10 carbon atoms
- R 2g and R 2h are each independently an alkyl group having 1 to 10 carbon atoms, a heteroalkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, or a cycloalkyl group having 6 to 10 carbon atoms It may be an aryl group of
- the compound represented by Formula 2 is N,N-bis(3-(trimethoxysilyl)propyl)-methyl-1-amine(N,N-bis(3-(trimethoxysilyl)propyl)-methyl -1-amine), N,N-bis(3-(triethoxysilyl)propyl)-methyl-1-amine (N,N-bis(3-(triethoxysilyl)propyl)-methyl-1-amine), Tri(trimethoxysilyl)amine), tri(3-(trimethoxysilyl)propyl)amine), N-(3-(1H) -1,2,4-triazol-1-yl)propyl)-3-(trimethoxysilyl)-N-(3-(trimethoxysilyl)propyl)propan-1-amine (N-(3- (1H-1,2,4-triazole-1-yl)propyl)-3-(trimethoxysilyl)-N-N-
- the compound represented by Formula 3 is 3,3'-(piperazin-1,4-diyl)bis(N,N-bis(3-(triethoxysilyl)propyl)propan-1-amine (3 ,3'-piperazine-1,4-diyl)bis(N,N-bis(3-(triethoxysilyl)propyl)propan-1-amine).
- the compound represented by Formula 4 is 3-(2,2-dimethoxy-1,2-azasilrolidin-1-yl)-N,N-bis(3-(trimethoxysilyl)propyl) propan-1-amine (3-(2,2-dimethoxy-1,2-azasilolidin-1-yl)-N,N-bis(3-(trimethoxysilyl)propyl)propan-1-amine).
- the aminoepoxy-based modifier is a compound including four or less polymer-modified functional groups in a molecule, wherein the polymer-modified functional group may be an epoxy group or an epoxy group and an alkoxy group.
- the aminoepoxy-based modifier may be a compound containing one or more polymer-modifying functional groups in a molecule and not more than four functional groups, and may be, for example, at least one selected from compounds represented by the following Chemical Formulas 5 to 7 have.
- R 3a and R 3b are each independently an alkylene group having 1 to 10 carbon atoms
- R 3c to R 3f are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, or —R 3g R 3h , wherein at least one of R 3c to R 3f is —R 3g R 3h , wherein R 3g is a single bond or a hetero an alkylene group having 1 to 10 carbon atoms with or without atoms, R 3h is an alkoxysilyl group having 1 to 10 carbon atoms or an epoxy group,
- R d1 to R d3 are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, or -R d4 R d5 , wherein at least one of R d1 to R d3 is -R d4 R d5 , wherein R d4 represents a heteroatom.
- an alkylene group having 1 to 10 carbon atoms with or without including, R d5 is an epoxy group,
- R g1 to R g4 are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an aryl group having 6 to 12 carbon atoms, or -R g5 OR g6 , wherein at least one of R g1 to R g4 is -R g5 OR g6 , wherein R g5 is a single bond or an alkylene group having 1 to 10 carbon atoms, R g6 is an epoxyalkyl group having 3 to 10 carbon atoms,
- Y is C or N, wherein when Y is N, R g4 is absent.
- R 3a and R 3b are each independently an alkylene group having 1 to 6 carbon atoms
- R 3c to R 3f are each independently an alkyl group having 1 to 6 carbon atoms or —R 3g R 3h
- R At least one of 3c to R 3f is -R 3g R 3h , wherein R 3g is a single bond or an alkylene group having 1 to 6 carbon atoms, and R 3h may be an epoxy group.
- the compound represented by Chemical Formula 5 may be a compound represented by the following Chemical Formula 5-1.
- R d1 to R d3 are each independently an alkyl group having 1 to 6 carbon atoms, or -R d4 R d5 , wherein at least one of R d1 to R d3 is -R d4 R d5 , wherein R d4 is hetero
- An alkylene group having 1 to 6 carbon atoms with or without an atom, R d5 may be an epoxy group, and the heteroatom may be O (oxygen atom).
- the compound represented by Formula 6 may be a compound represented by Formula 6-1 below.
- R g1 to R g4 are each independently an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or -R g5 R g6 , wherein at least one of R g1 to R g4 is -R g5 R g6 , wherein R g5 is an alkylene group having 1 to 6 carbon atoms with or without a heteroatom, and R g6 is an epoxy group, wherein the heteroatom may be O.
- the compound represented by Chemical Formula 7 may be selected from compounds represented by the following Chemical Formulas 7-1 to 7-4.
- the modified conjugated diene-based copolymer may have a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) of 1,000,000 g/mol to 3,000,000 g/mol, specifically 1,200,000 g It may be /mol to 2,000,000 g/mol, and there is an excellent effect of running resistance and abrasion resistance within this range.
- Mw weight average molecular weight measured by gel permeation chromatography
- the modified conjugated diene-based polymer may have a molecular weight distribution (PDI; MWD; Mw/Mn) of 1.0 or more and 2.0 or less, specifically 1.5 or more and 2.0 or less, and has excellent tensile properties and viscoelastic properties within this range, and each There is an excellent effect of the balance between the physical properties.
- PDI molecular weight distribution
- the modified conjugated diene-based polymer may have a number average molecular weight (Mn) of 500,000 g/mol to 3,000,000 g/mol, or 600,000 g/mol to 1,300,000 g/mol.
- Mn number average molecular weight
- a molecular weight distribution curve by gel permeation chromatography may have a unimodal shape, and the unimodal curve shape may be of continuous polymerization. It can be determined by methodological aspects and aspects of the denaturation reaction carried out by the denaturant or coupling agent.
- the modified conjugated diene-based polymer satisfies that the glass transition temperature is -40°C or less, and specifically, it may be -70°C or more and -40°C or less or -60°C or more and -40°C or less.
- the glass transition temperature may vary depending on the content of the aromatic vinyl-based monomer as the comonomer, but is not determined only by the content of the comonomer, and may be flexible depending on the polymerization method and conditions.
- the modified conjugated diene-based polymer prepared to meet the above range has excellent affinity with a filler such as silica or carbon black when blended, so that the abrasion resistance can be improved, and within the above range, the rotation resistance and Abrasion resistance may be excellent in a balance.
- the modified conjugated diene-based polymer satisfies that the Si content and the N content are each 70 ppm or more based on the total weight of the polymer, and specifically 70 ppm to 10,000 ppm, or 100 ppm to 5,000 ppm, and may be in this range There is an excellent effect in mechanical properties such as tensile properties and viscoelastic properties of a rubber composition containing a modified conjugated diene-based polymer in the interior.
- the Si content and the N content may refer to the content of Si atoms and N atoms present in the modified conjugated diene-based polymer, respectively.
- the Si atom may be derived from a functional group derived from a modifier
- the N atom may be derived from a functional group derived from a modification initiator and a modifier.
- the Si content and the N content may be affected by the extent to which coupling occurs by the modifier in the modification reaction, and the amount of modifier input during manufacturing, the amount of polar additive, reaction time, and the amount of modifier and active polymer It can be controlled according to the mixing time and mixing degree.
- the modified conjugated diene-based polymer satisfies that the coupling number is more than 2.5 and less than 5.0, and specifically, it may be 2.8 or more and less than 5.0 or 3.0 or more and 4.5 or less, and Si content and N content, and weight average molecular weight within this range. can be easily adjusted as described above.
- the modified conjugated diene-based polymer satisfies that the Mooney viscosity measured under ASTM D1646 is 90 or more, and specifically, may be 95 or more and 125 or less. Within this range, processability may be quite good.
- the modified conjugated diene-based polymer satisfies the Mooney stress relaxation rate (-S/R) measured at 100° C. of 0.40 or less.
- the Mooney stress relaxation rate may be an indicator of the branching degree and molecular weight of the modified conjugated diene-based polymer, and specifically, the Mooney stress relaxation rate may be 0.35 or less.
- a lower Mooney stress relaxation rate may mean a higher degree of branching and a higher molecular weight, and the lower limit is not particularly limited thereto, but may be 0.1 or more.
- the Mooney stress relaxation rate measured at 100° C. can be an indicator of the branching degree and molecular weight of the modified conjugated diene-based polymer as described above, and as the Mooney stress relaxation rate decreases, the modified conjugated diene-based polymer of branching and molecular weight tend to increase.
- the Mooney stress relaxation rate may be related to the aforementioned Mooney viscosity.
- the Mooney stress relaxation rate may be completely different even if the polymer has the same level of Mooney viscosity, for example, modified conjugated diene. Since the Mooney stress relaxation rate becomes smaller as the polymer has more branches, the Mooney stress relaxation rate may not be the same due to the branching difference even with the same Mooney viscosity.
- the modified conjugated diene-based polymer according to an embodiment of the present invention satisfies the above-mentioned Mooney stress relaxation rate in the aforementioned Mooney viscosity, so that it has excellent processability and has excellent mechanical properties such as tensile strength because the degree of branching is controlled.
- the modified conjugated diene-based polymer according to an embodiment of the present invention may have a 1,2-vinyl bond content of 30% by weight based on the total weight of the polymer, and the vinyl content is a monomer having a vinyl group and an aromatic vinyl-based polymer. It may mean the weight % of the 1,2-added conjugated diene-based monomer, rather than 1,4-added, with respect to the conjugated diene-based copolymer composed of the monomer, at which time the polymerization reaction is terminated and the polymerization reaction is terminated. It may be affected by the reaction environment of the time point.
- the 1,2-vinyl bond content may be 5 to 30% by weight, preferably 10 to 25% by weight, and the abrasion resistance and rotation resistance are affected according to the 1,2-vinyl bond content. If the 1,2-vinyl bond content exceeds 30% by weight, the glass transition temperature may be affected along with this, and there is a risk that the rolling resistance and wet road resistance may be deteriorated. When preparing the polymer, it is necessary to pay attention to the reaction conditions so that the 1,2-vinyl bond content can satisfy the above range.
- the present invention provides a method for producing the modified conjugated diene-based polymer.
- the manufacturing method comprises the steps of preparing an active polymer by polymerizing a conjugated diene-based monomer or a conjugated diene-based monomer and an aromatic vinyl-based monomer in a hydrocarbon solvent in the presence of a nitrogen-containing modification initiator (S1); a first modification reaction step (S2) of reacting the active polymer with an aminoalkoxysilane-based modifier; and a second denaturation reaction step (S3) of reacting with an aminoepoxy denaturant after the first denaturation reaction.
- S1 nitrogen-containing modification initiator
- S2 first modification reaction step
- S3 second denaturation reaction step
- the hydrocarbon solvent is not particularly limited, but may be, for example, at least one selected from the group consisting of n-pentane, n-hexane, n-heptane, isooctane, cyclohexane, toluene, benzene and xylene.
- the nitrogen-containing denaturation initiator is 0.01 mmol to 10 mmol, 0.05 mmol to 5 mmol, 0.1 mmol to 2 mmol, 0.1 mmol to 1 mmol, or 0.15 to 0.8 based on 100 g of the total monomer. mmol can be used.
- the polymerization in step (S1) may be, for example, anionic polymerization, and as a specific example, living anionic polymerization having an anionic active site at the polymerization end by an anion-based growth polymerization reaction.
- the polymerization in step (S1) may be an elevated temperature polymerization, isothermal polymerization, or constant temperature polymerization (adiabatic polymerization), and the constant temperature polymerization includes the step of polymerizing with heat of reaction by itself without optionally applying heat after an initiator is added.
- the elevated temperature polymerization may refer to a polymerization method in which the temperature is increased by optionally applying heat after the initiator is added, and the isothermal polymerization is to increase heat by adding heat after the initiator is added Or it may refer to a polymerization method in which the temperature of the polymer is kept constant by taking heat.
- the polymerization in step (S1) may be carried out by further including a diene-based compound having 1 to 10 carbon atoms in addition to the conjugated diene-based monomer, and in this case, it is applied to the reactor wall during long-term operation. It has the effect of preventing the formation of a gel.
- the diene-based compound may be, for example, 1,2-butadiene.
- the polymerization in step (S1) may be carried out, for example, at a temperature range of 100° C. or less, 50° C. to 100° C. or 50° C. to 80° C., and the conversion rate of the polymerization reaction can be increased within this range, and the molecular weight of the polymer It is possible to satisfy the weight average molecular weight while controlling the distribution, so there is an excellent effect of improving physical properties.
- the active polymer prepared by the step (S1) may refer to a polymer in which a polymer anion and an organometallic cation are bound.
- the active polymer prepared by the polymerization in step (S1) may be a random copolymer, and in this case, there is an excellent effect in the balance between the respective physical properties.
- the random copolymer may mean that repeating units constituting the copolymer are disorderly arranged.
- the polymerization in step (S1) may be carried out including a polar additive, and the polar additive may be added in a proportion of 0.001 g to 50 g, or 0.002 g to 0.1 g based on 100 g of the total monomer.
- the polar additive may be added in a ratio of more than 0 g to 1 g, 0.01 g to 1 g, or 0.1 g to 0.9 g based on 100 g of the total organometallic compound.
- the polar additive is, for example, tetrahydrofuran, ditetrahydrofurylpropane, diethyl ether, cyclopentyl ether, dipropyl ether, ethylene methyl ether, ethylene dimethyl ether, diethyl glycol, dimethyl ether, tertiary-butoxyethoxy It may be at least one selected from the group consisting of ethane, bis (3-dimethylaminoethyl) ether, (dimethylaminoethyl) ethyl ether, trimethylamine, triethylamine, tripropylamine and tetramethylethylenediamine, preferably trimethylamine It may be ethylamine or tetramethylethylenediamine, and when the polar additive is included, when copolymerizing a conjugated diene-based monomer and an aromatic vinyl-based monomer, it compensates for a difference in reaction rate between them so that a random copolymer can be
- step (S2) is a first modification reaction step for first modifying the active polymer by reacting the active polymer with an aminoalkoxysilane-based modifier to form a first polymer chain, and the active polymer and the aminoalkoxysilane-based modifier It can be carried out by reacting
- the first denaturation reaction step may be performed so that 10 wt% to 90 wt% of the total weight of the active polymer is denatured.
- the degree of modification of the active polymer can be controlled by the ratio of the aminoalkoxysilane-based modifier to the active polymer and the temperature and reaction time during the primary modification reaction.
- the aminoalkoxysilane-based modifier is mixed with the active polymer.
- step (S3) is a second modification reaction step for forming a second polymer chain by reacting an unmodified active polymer that has not been modified in the first modification reaction with an aminoepoxy-based modifier. It may be carried out by reacting the polymer with the aminoepoxy modifier, in which case the aminoepoxy modifier may be used so that the aminoalkoxy modifier and the aminoepoxy modifier have a weight ratio of 8:2 to 5:5.
- the manufacturing method comprises the steps of performing a first denaturation reaction with a denaturant having a relatively large number of functional groups and performing a second denaturation reaction with a denaturing agent having a relatively small number of functional groups, thereby having a first high degree of branching.
- a modified conjugated diene-based polymer including a polymer chain and a second polymer chain having a relatively low degree of branching can be prepared at the same time, and the polymer includes the first polymer chain and the second polymer chain, so that the polymer has excellent mechanical properties and excellent processability. It has an excellent effect.
- a rubber composition comprising the modified conjugated diene-based polymer.
- the rubber composition may include the modified conjugated diene-based polymer in an amount of 10% by weight or more, 10% to 100% by weight, or 20% to 90% by weight, within this range, tensile strength, abrasion resistance, etc. It has excellent mechanical properties and excellent balance between the physical properties.
- the rubber composition may further include other rubber components as needed in addition to the modified conjugated diene-based polymer, wherein the rubber component may be included in an amount of 90% by weight or less based on the total weight of the rubber composition.
- the other rubber component may be included in an amount of 1 to 900 parts by weight based on 100 parts by weight of the modified conjugated diene-based polymer.
- the rubber component may be, for example, natural rubber or synthetic rubber, and specific examples thereof include natural rubber (NR) including cis-1,4-polyisoprene; Modified natural rubbers such as epoxidized natural rubber (ENR), deproteinized natural rubber (DPNR), and hydrogenated natural rubber that are modified or refined of the general natural rubber; Styrene-butadiene copolymer (SBR), polybutadiene (BR), polyisoprene (IR), butyl rubber (IIR), ethylene-propylene copolymer, polyisobutylene-co-isoprene, neoprene, poly(ethylene-co-) propylene), poly(styrene-co-butadiene), poly(styrene-co-isoprene), poly(styrene-co-isoprene-co-butadiene), poly(isoprene-co-butadiene), poly(ethylene-co-propylene) -co-
- the rubber composition may include, for example, 0.1 parts by weight to 200 parts by weight, or 10 parts by weight to 120 parts by weight of a filler based on 100 parts by weight of the modified conjugated diene-based polymer of the present invention.
- the filler may be, for example, a silica-based filler, and specific examples include wet silica (hydrous silicic acid), dry silica (anhydrous silicic acid), calcium silicate, aluminum silicate or colloidal silica, and preferably, the effect of improving fracture properties and wet It may be wet silica that has the best effect of compatibility with wet grip.
- the rubber composition may further include a carbon-based filler if necessary.
- silane coupling agent for improving reinforcing properties and low heat generation may be used together, and as a specific example, the silane coupling agent is bis(3-triethoxysilylpropyl)tetrasulfide , bis(3-triethoxysilylpropyl)trisulfide, bis(3-triethoxysilylpropyl)disulfide, bis(2-triethoxysilylethyl)tetrasulfide, bis(3-trimethoxysilyl) propyl) tetrasulfide, bis(2-trimethoxysilylethyl)tetrasulfide, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 2-mercaptoethyltrimethoxysilane, 2-Mercaptoethyltriethoxysilane, 3-trimethoxys
- it may be bis(3-triethoxysilylpropyl)polysulfide or 3-trimethoxysilylpropylbenzothiazyltetrasulfide.
- a modified conjugated diene-based polymer in which a functional group with high affinity for silica is introduced is used as a rubber component, so the compounding amount of the silane coupling agent is conventional. may be reduced than the case, and accordingly, the silane coupling agent may be used in an amount of 1 to 20 parts by weight, or 5 to 15 parts by weight, based on 100 parts by weight of silica, and the effect as a coupling agent within this range is It has the effect of preventing the gelation of the rubber component while being sufficiently exhibited.
- the rubber composition according to an embodiment of the present invention may be crosslinkable with sulfur, and may further include a vulcanizing agent.
- the vulcanizing agent may be specifically sulfur powder, and may be included in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the rubber component, and within this range, the vulcanized rubber composition has a low fuel efficiency while securing the required elastic modulus and strength. It has an excellent effect.
- the rubber composition according to an embodiment of the present invention includes, in addition to the above components, various additives commonly used in the rubber industry, specifically, a vulcanization accelerator, a process oil, a plasticizer, an anti-aging agent, an anti-scorch agent, zinc white, It may further include stearic acid, a thermosetting resin, or a thermoplastic resin.
- the vulcanization accelerator is, for example, a thiazole-based compound such as M (2-mercaptobenzothiazole), DM (dibenzothiazyl disulfide), CZ (N-cyclohexyl-2-benzothiazyl sulfenamide), or DPG
- a thiazole-based compound such as M (2-mercaptobenzothiazole), DM (dibenzothiazyl disulfide), CZ (N-cyclohexyl-2-benzothiazyl sulfenamide), or DPG
- a guanidine-based compound such as (diphenylguanidine) may be used, and may be included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the rubber component.
- the process oil acts as a softener in the rubber composition, and may be, for example, a paraffinic, naphthenic, or aromatic compound. Naphthenic or paraffinic process oils may be used.
- the process oil may be included in an amount of 100 parts by weight or less based on 100 parts by weight of the rubber component, for example, and has an effect of preventing deterioration of the tensile strength and low heat generation (low fuel efficiency) of the vulcanized rubber within this range.
- the antioxidant is, for example, N-isopropyl-N'-phenyl-p-phenylenediamine, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, 6-ethoxy-2 ,2,4-trimethyl-1,2-dihydroquinoline, or a high-temperature condensate of diphenylamine and acetone, etc., may be used in an amount of 0.1 to 6 parts by weight based on 100 parts by weight of the rubber component.
- the rubber composition according to an embodiment of the present invention can be obtained by kneading using a kneader such as a Banbury mixer, a roll, an internal mixer, etc. according to the compounding prescription, and has low heat generation and wear resistance by a vulcanization process after molding processing. This excellent rubber composition can be obtained.
- a kneader such as a Banbury mixer, a roll, an internal mixer, etc.
- the rubber composition may be used for each member of the tire such as a tire tread, under tread, side wall, carcass coated rubber, belt coated rubber, bead filler, cheffer, or bead coated rubber, vibration proof rubber, belt conveyor, hose, etc. It may be useful in the manufacture of various industrial rubber products of
- the present invention provides a tire manufactured using the rubber composition.
- the tire may include a tire or a tire tread.
- a 1,3-butadiene solution in which 60 wt% of 1,3-butadiene is dissolved in n-hexane is injected into the second reactor at a rate of 1.41 g/h, and the temperature of the second reactor is 70° C.
- the polymerization conversion rate reached 95% or more by continuing the polymerization, the polymer was transferred from the second reactor to the third reactor through a transfer pipe.
- 1,3,5-tris(oxiran-2-ylmethyl)-1,3.5-triazinane-2 as a second denaturant in n-hexane solution in the third reactor
- IR1520 (BASF Corporation) dissolved at 30 wt% as an antioxidant was injected into the polymerization solution discharged from the third reactor at a rate of 167 g/h and stirred.
- the resulting polymer was put into hot water heated with steam and stirred to remove the solvent to prepare a modified conjugated diene-based polymer.
- Example 1 1-phenyl-4-(4-vinylbenzyl)piperazine in n-hexane instead of 1-methyl-4-(4-vinylbenzyl)piperazine as a denaturation initiator (1-phenyl-4- A modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that an initiator solution in which (4-vinylbenzyl)piperazine) was dissolved at 10% by weight was injected at a rate of 60 g/h.
- Example 1 as the first modifier N 1 ,N 1 ,N 3 , N 3 -tetrakis(3-(trimethoxysilyl)propyl)propan-1,3-amine in n-hexane instead of 3- (2,2-dimethoxy-1,2-azacilrolidin-1-yl)-N,N-bis(3-(trimethoxysilyl)propyl)propan-1-amine (3-(2,2 -dimethoxy-1,2-azasilolidin-1-yl)-N,N-bis(3-(trimethoxysilyl)propyl)propan-1-amine) was dissolved in 10% by weight of the first denaturant solution at 99.8 g/h A modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that it was added and reacted at a rate.
- Example 1 in place of N 1 ,N 1 ,N 3 , N 3 -tetrakis(3-(trimethoxysilyl)propyl)propan-1,3-amine as the first modifier 3 in n-hexane, 3'-(piperazin-1,4-diyl)bis(N,N-bis(3-(triethoxysilyl)propyl)propan-1-amine (3,3'-piperazine-1,4-diyl) bis(N,N-bis(3-(triethoxysilyl)propyl)propan-1-amine) in 10 wt% of the first modifier solution was added at a rate of 187.5 g/h In the same manner as in Example 1, a modified conjugated diene-based polymer was prepared.
- Example 1 N in n-hexane instead of 1,3,5-tris(oxiran-2-ylmethyl)-1,3.5-triazinane-2,4,6-trione as the second denaturant; N'-(1,3-phenylenebis(methylene))bis(1-(oxiran-2-yl)-N-(oxiran-2-ylmethyl)methanamine)(N,N'-(1
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that it was added and reacted.
- Example 1 in place of 1,3,5-tris(oxiran-2-ylmethyl)-1,3.5-triazinane-2,4,6-trione as the second denaturant, 2- to n-hexane (oxiran-2-yl)-N,N-bis((oxiran-2-ylmethoxy)methyl)ethanamine(2-(oxiran-2-yl)-N,N-bis((oxiran-2- A modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that the second modifier solution in which ylmethoxy)methyl)ethanamine) was dissolved at 5 wt% was added at a rate of 54 g/h and reacted. .
- Example 1 a modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that the second modifier solution was not added.
- Example 1 a modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that the first modifier solution was not added.
- Example 1 in n-hexane as the first denaturant solution and the second denaturant solution, N 1 ,N 1 ,N 3 , N 3 -tetrakis(3-(trimethoxysilyl)propyl)propane-1;
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that a solution in which 3-amine was dissolved at 10% by weight was added at a rate of 56.1 g/h.
- Example 1 1,3,5-tris(oxiran-2-ylmethyl)-1,3.5-triazinane-2,4,6 in n-hexane as the first denaturant solution and the second denaturant solution respectively -
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that a solution in which 5 wt% of trion was dissolved was added at a rate of 67.8 g/h.
- Example 1 N in n-hexane instead of N 1 ,N 1 ,N 3 , N 3 -tetrakis(3-(trimethoxysilyl)propyl)propan-1,3-amine as the first modifier; 105.0 g of a first denaturant solution in which 10 wt% of N-diethyl-3-(trimethoxysilyl)propan-1-amine (N,N-diethyl-3-(trimethoxysilyl)propan-1-amine) is dissolved
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that it was added and reacted at a rate of /h.
- Example 1 N in n-hexane instead of 1,3,5-tris(oxiran-2-ylmethyl)-1,3.5-triazinane-2,4,6-trione as the second denaturant; 105 g of a second denaturant solution in which 10 wt% of N-diethyl-3-(trimethoxysilyl)propan-1-amine (N,N-diethyl-3-(trimethoxysilyl)propyl-1-amine) is dissolved
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that it was added and reacted at a rate of /h.
- Mw Weight average molecular weight
- Mn number average molecular weight
- PDI molecular weight distribution
- the weight average molecular weight (Mw) and number average molecular weight (Mn) were measured through gel permeation chromatohraph (GPC) analysis, and molecular weight distributions (PDI, MWD, Mw/Mn) were obtained by calculating from each of the measured molecular weights.
- GPC gel permeation chromatohraph
- PDI, MWD, Mw/Mn molecular weight distributions
- the GPC uses a combination of two PLgel Olexis (Polymer Laboratories) columns and one PLgel mixed-C (Polymer Laboratories) column, and when calculating molecular weight, the GPC reference material (Standard material) is PS (polystyrene) was used.
- the GPC measurement solvent was prepared by mixing 2 wt% of an amine compound in tetrahydrofuran.
- the Mooney viscosity (MV, (ML1+4, @100°C MU) was measured using MV-2000 (ALPHA Technologies) at 100°C using a Rotor Speed of 2 ⁇ 0.02 rpm, a Large Rotor, and the sample used at this time was left at room temperature (23 ⁇ 3°C) for more than 30 minutes, then collected 27 ⁇ 3 g, filled it in the die cavity, and operated the platen to measure for 4 minutes.
- the Mooney stress relaxation rate was obtained from the absolute value by measuring the slope value of the Mooney viscosity change appearing when the torque is released after measuring the Mooney viscosity.
- Examples 1 to 6 had a high molecular weight, but had a narrow molecular weight distribution, and exhibited a Mooney stress relaxation rate (branching degree) adjusted to an intermediate level compared to Comparative Examples 1 to 6.
- Each of the modified conjugated diene-based polymers of Examples and Comparative Examples was used as a raw rubber and blended under the compounding conditions shown in Table 2 below.
- the raw materials in Table 2 are each part by weight based on 100 parts by weight of the raw rubber.
- the rubber specimen is kneaded through the first stage kneading and the second stage kneading.
- first stage kneading raw rubber, silica (filler), organosilane coupling agent (X50S, Evonik), process oil (TDAE oil), zinc oxide (ZnO), stearic acid is used using a Banbari mixer with a temperature control device.
- antioxidant (TMQ(RD) (2,2,4-trimethyl-1,2-dihydroquinoline polymer), antioxidant (6PPD ((dimethylbutyl)-N-phenyl-phenylenediamine) and wax (Microcrystaline Wax) ) was kneaded.At this time, the initial temperature of the kneader was controlled to 70 ° C., and after the mixing was completed, a first blend was obtained at a discharge temperature of 145 ° C.
- the first blend was cooled to room temperature, Add the primary compound, sulfur, rubber accelerator (DPG (diphenylguanidine)) and vulcanization accelerator (CZ (N-cyclohexyl-2-benzothiazylsulfenamide)) to a kneader, and mix at a temperature of 100° C. or less to 2 A tea blend was obtained, and then, a rubber specimen was prepared through a curing process at 160° C. for 20 minutes.
- DPG diphenylguanidine
- CZ N-cyclohexyl-2-benzothiazylsulfenamide
- each secondary formulation was left at room temperature (23 ⁇ 3°C) for at least 30 minutes and then 27 ⁇ 3 g was collected, filled inside the die cavity, and the platen was operated for 4 minutes.
- the tan ⁇ value was confirmed by measuring the viscoelastic behavior against dynamic deformation at a frequency of 10 Hz and each measurement temperature (-60°C to 60°C) in Film Tension mode using a dynamic mechanical analyzer (GABO).
- GBO dynamic mechanical analyzer
- the lower the high temperature 60°C tan ⁇ value the less the hysteresis loss and the better the rotation resistance (fuel efficiency).
- Table 3 the results are shown by indexing based on the measurement results of Comparative Example 1.
- Examples 1 to 6 confirmed that compared to Comparative Examples 1 to 6, rotation resistance, workability, and abrasion resistance were excellent in a well-balanced manner.
- Examples 1 to 6 all exhibited uniformly excellent properties of workability, abrasion resistance, and rotation resistance at the same level, whereas Comparative Examples 1, 3 and 6 had a workability of 10% or more compared to Examples 1 to 6 was significantly lowered, and Comparative Examples 2, 4, and 5 had both rotation resistance and abrasion resistance significantly reduced to 10% or more compared to Examples 1 to 6.
- Comparative Examples 1 to 6 do not perform a denaturation reaction using an aminoalkoxysilane-based modifier or an aminoepoxy-based modifier, or perform a modification reaction with the two modifiers, but the aminoalkoxysilane-based modifier contains six alkoxy groups in the molecule. It is a polymer prepared by performing a denaturation reaction using a compound containing less than.
- the modified conjugated diene-based polymer according to the present invention is prepared using different modifiers having different number of functional groups having a reactive activity with the active polymer while each including a filler affinity functional group, so that the first polymer having a different degree of branching from each other
- the chain and the second polymer chain it can be confirmed that the molecular weight distribution and branching degree are controlled while having a high molecular weight, so that mechanical properties, processability, and rotation resistance are balanced and excellent effects are obtained (see Tables 1 and 3).
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Abstract
Description
Claims (11)
- 각각 공액디엔계 단량체 유래 반복단위 및 질소 함유 변성 개시제 유래 단위를 포함하는 제1 중합체 사슬 및 제2 중합체 사슬을 포함하고,상기 제1 중합체 사슬은 적어도 일 말단에 아미노알콕시실란계 변성제 유래 단위를 포함하고,상기 제2 중합체 사슬은 적어도 일 말단에 아미노에폭시계 변성제 유래 단위를 포함하며,상기 아미노알콕시실란계 변성제는 분자 내 6개 이상의 알콕시기를 포함하는 것인 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 제1 중합체 사슬 및 제2 중합체 사슬은 각각 방향족 비닐계 단량체 유래 반복단위를 더 포함하는 것이 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 아미노에폭시계 변성제는 분자 내 4개 이하의 중합체 변성 작용기를 포함하고,상기 중합체 변성 작용기는 에폭시기 또는 알콕시기 및 에폭시기를 포함하는 것인 변성 공액디엔계 중합체.
- 제1항에 있어서,상기 질소 함유 변성 개시제는 질소 함유 화합물과 유기금속 화합물의 반응 생성물이고,상기 질소 함유 화합물은 분자 내 치환기로 치환 또는 비치환된 아미노기, 아미드기, 이미노기, 이미다졸기, 피리미딜기 또는 환형 아미노기를 포함하는 스티렌계 화합물이고, 여기에서 상기 치환기는 탄소수 1 내지 20의 알킬기, 탄소수 3 내지 20의 시클로알킬기, 탄소수 6 내지 20의 아릴기, 탄소수 7 내지 20의 알킬아릴기, 탄소수 7 내지 20의 아릴알킬기, 탄소수 1 내지 10의 알콕시실릴기인 것인 변성 공액디엔계 중합체.
- 제4항에 있어서,상기 질소 함유 화합물은 하기 화학식 1로 표시되는 화합물인 것인 변성 공액디엔계 중합체:[화학식 1]상기 화학식 1에서,R1 내지 R3는 서로 독립적으로 수소; 탄소수 1 내지 30의 알킬기; 탄소수 2내지 30의 알케닐기; 탄소수 2 내지 30의 알카이닐기; 탄소수 1 내지 30의 헤테로알킬기, 탄소수 2 내지 30의 헤테로알케닐기; 탄소수 2 내지 30의 헤테로알카이닐기; 탄소수 5 내지 30의 시클로알킬기; 탄소수 6 내지 30의 아릴기; 또는 탄소수 3 내지 30의 헤테로고리기이며,R4는 단일결합; 치환기로 치환 또는 비치환된 탄소수 1 내지 20의 알킬렌기; 치환기로 치환 또는 비치환된 탄소수 5 내지 20의 시클로알킬렌기; 또는 치환기로 치환 또는 비치환된 탄소수 5 내지 20의 아릴렌기이고, 여기에서 상기 치환기는 탄소수 1 내지 10의 알킬기, 탄소수 5 내지 10의 시클로알킬기, 또는 탄소수 5 내지 20의 아릴기이고,R5는 탄소수 1 내지 30의 알킬기; 탄소수 2 내지 30의 알케닐기; 탄소수 2 내지 30의 알카이닐기; 탄소수 1 내지 30의 헤테로알킬기; 탄소수 2 내지 30의 헤테로알케닐기; 탄소수 2 내지 30의 헤테로알카이닐기; 탄소수 5 내지 30의 시클로알킬기; 탄소수 6 내지 30의 아릴기; 탄소수 3 내지 30의 헤테로고리기; 또는 하기 화학식 1a 또는 화학식 1b로 표시되는 작용기이며,n은 1 내지 5의 정수이고, R5 중 적어도 하나는 하기 화학식 1a 또는 화학식 1b로 표시되는 작용기이며, n이 2 내지 5의 정수인 경우 복수 개의 R5는 서로 동일하거나 상이할 수 있고,[화학식 1a]상기 화학식 1a에서,R6은 치환기로 치환 또는 비치환된 탄소수 1 내지 20의 알킬렌기; 치환기로 치환 또는 비치환된 탄소수 5 내지 20의 시클로알킬렌기; 또는 치환기로 치환 또는 비치환된 탄소수 5 내지 20의 아릴렌기이고, 여기에서 상기 치환기는 탄소수 1 내지 10의 알킬기, 탄소수 5 내지 10의 시클로알킬기, 또는 탄소수 5 내지 20의 아릴기이고,R7 및 R8은 서로 독립적으로 탄소수 1 내지 10의 알킬기, 탄소수 5 내지 10의 시클로알킬기, 또는 탄소수 5 내지 20의 아릴기로 치환 또는 비치환된 탄소수 1 내지 20의 알킬렌기이며,R9는 수소; 탄소수 1 내지 30의 알킬기; 탄소수 2 내지 30의 알케닐기; 탄소수 2 내지 30의 알카이닐기; 탄소수 1 내지 30의 헤테로알킬기; 탄소수 2 내지 30의 헤테로알케닐기; 탄소수 2 내지 30의 헤테로알카이닐기; 탄소수 5 내지 30의 시클로알킬기; 탄소수 6 내지 30의 아릴기; 탄소수 3 내지 30의 헤테로고리기이고,Z는 N, O 또는 S 원자이며, Z가 O 또는 S인 경우 R9는 존재하지 않으며,[화학식 1b]상기 화학식 1b에서,R10은 치환기로 치환 또는 비치환된 탄소수 1 내지 20의 알킬렌기; 치환기로 치환 또는 비치환된 탄소수 5 내지 20의 시클로알킬렌기; 또는 치환기로 치환 또는 비치환된 탄소수 5 내지 20의 아릴렌기이고, 여기에서 상기 치환기는 탄소수 1 내지 10의 알킬기, 탄소수 5 내지 10의 시클로알킬기, 또는 탄소수 5 내지 20의 아릴기이고,R11 및 R12는 서로 독립적으로 탄소수 1 내지 30의 알킬기; 탄소수 2 내지 30의 알케닐기; 탄소수 2 내지 30의 알카이닐기; 탄소수 1 내지 30의 헤테로알킬기; 탄소수 2 내지 30의 헤테로알케닐기; 탄소수 2 내지 30의 헤테로알카이닐기; 탄소수 5 내지 30의 시클로알킬기; 탄소수 6 내지 30의 아릴기; 탄소수 3 내지 30의 헤테로고리기이다.
- 제1항에 있어서,상기 아미노알콕시실란계 변성제는 하기 화학식 2 내지 화학식 4로 표시되는 화합물 중에서 선택된 1종 이상인 것인 변성 공액디엔계 중합체:[화학식 2]상기 화학식 2에서,R2a 및 R2d는 서로 독립적으로 단일 결합, 치환기로 치환 또는 비치환된 탄소수 1 내지 20의 알킬렌기; 치환기로 치환 또는 비치환된 탄소수 5 내지 20의 시클로알킬렌기; 또는 치환기로 치환 또는 비치환된 탄소수 6 내지 20의 아릴렌기이고, 여기에서 상기 치환기는 탄소수 1 내지 10의 알킬기, 탄소수 5 내지 10의 시클로알킬기, 또는 탄소수 6 내지 20의 아릴기이고,R2b 및 R2c는 서로 독립적으로 탄소수 1 내지 20의 알킬기, 탄소수 2 내지 20의 알케닐기, 탄소수 2 내지 20의 알카이닐기, 탄소수 1 내지 20의 헤테로알킬기, 탄소수 2 내지 20의 헤테로알케닐기, 탄소수 2 내지 20의 헤테로알카이닐기, 탄소수 5 내지 20의 시클로알킬기, 또는 탄소수 6 내지 20의 아릴기이고,R2e는 탄소수 1 내지 10의 알킬기, 탄소수 2 내지 10의 알릴기, 탄소수 1 내지 10의 알킬기로 치환된 1치환, 2치환 또는 3치환의 알킬실릴기, 탄소수 2 내지 10의 헤테로고리기 또는 -N-[R2f-Si(OR2g)d(R2h)3-d]2이고,여기에서 R2f는 단일 결합, 치환기로 치환 또는 비치환된 탄소수 1 내지 20의 알킬렌기; 치환기로 치환 또는 비치환된 탄소수 5 내지 20의 시클로알킬렌기; 또는 치환기로 치환 또는 비치환된 탄소수 6 내지 20의 아릴렌기이고, 여기에서 상기 치환기는 탄소수 1 내지 10의 알킬기, 탄소수 5 내지 10의 시클로알킬기, 또는 탄소수 6 내지 20의 아릴기이고,R2g 및 R2h는 서로 독립적으로 탄소수 1 내지 20의 알킬기, 탄소수 2 내지 20의 알케닐기, 탄소수 2 내지 20의 알카이닐기, 탄소수 1 내지 20의 헤테로알킬기, 탄소수 2 내지 20의 헤테로알케닐기, 탄소수 2 내지 20의 헤테로알카이닐기, 탄소수 5 내지 20의 시클로알킬기, 또는 탄소수 6 내지 20의 아릴기이고,d는 1 내지 3의 정수이며,a는 1 내지 3의 정수이고, b는 0 또는 1이고, c는 2 또는 3이되,b가 0인 경우 및 b가 1일 때 R2e가 -N-[R2f-Si(OR2g)d(R2h)3-d]2가 아닌 경우 a+c는 5 또는 6이고,b가 1일 때 R2e가 -N-[R2f-Si(OR2g)d(R2h)3-d]2인 경우 a+c는 4 또는 5이며,[화학식 3]상기 화학식 3에서,Rb2 내지 Rb4는 서로 독립적으로 탄소수 1 내지 10의 알킬렌기이고,Rb5 내지 Rb8은 서로 독립적으로 탄소수 1 내지 10의 알킬기이고,Rb12 내지 Rb14는 서로 독립적으로 탄소수 1 내지 10의 알킬렌기이고,Rb15 내지 Rb18은 서로 독립적으로 탄소수 1 내지 10의 알킬기이고,m1, m2, m3 및 m4는 서로 독립적으로 1 내지 3의 정수이며,[화학식 4]상기 화학식 4에서,Rh1 및 Rh2는 서로 독립적으로 탄소수 1 내지 10의 알킬기 또는 탄소수 1 내지 10의 알콕시기이고,Rh3는 단일결합 또는 탄소수 1 내지 10의 알킬렌기이고, A3는 -N[Si(Rh4Rh5Rh6)]2이며, 여기에서 Rh4 내지 Rh6은 서로 독립적으로 탄소수 1 내지 10의 알콕시기이다.
- 제1항에 있어서,상기 아미노에폭시계 변성제는 하기 화학식 5 내지 화학식 7로 표시되는 화합물인 것인 변성 공액디엔계 중합체:[화학식 5]상기 화학식 5에서,R3a 및 R3b는 서로 독립적으로 탄소수 1 내지 10의 알킬렌기이고,R3c 내지 R3f는 서로 독립적으로 수소, 탄소수 1 내지 10의 알킬기 또는 -R3gR3h이되, R3c 내지 R3f 중 적어도 하나는 -R3gR3h이고, 여기에서 R3g는 단일결합 또는 헤테로원자를 포함하거나 포함하지 않는 탄소수 1 내지 10의 알킬렌기이고, R3h는 탄소수 1 내지 10의 알콕시실릴기 또는 에폭시기이며,[화학식 6]상기 화학식 6에서,Rd1 내지 Rd3는 서로 독립적으로 수소, 탄소수 1 내지 10의 알킬기, 또는 -Rd4Rd5이되, Rd1 내지 Rd3 중 적어도 하나는 -Rd4Rd5이고, 여기에서 Rd4는 헤테로원자를 포함하거나 포함하지 않는 탄소수 1 내지 10의 알킬렌기이고, Rd5는 에폭시기이며,[화학식 7]상기 화학식 7에서,Rg1 내지 Rg4는 서로 독립적으로 수소, 탄소수 1 내지 10의 알킬기, 탄소수 1 내지 10의 알콕시기, 탄소수 6 내지 12의 아릴기 또는 -Rg5ORg6이되, Rg1 내지 Rg4 중 적어도 하나는 -Rg5ORg6이고, 여기에서 Rg5는 단일결합이거나 또는 탄소수 1 내지 10의 알킬렌기이고, Rg6은 탄소수 3 내지 10의 에폭시알킬기이며,Y는 C 또는 N이되, Y가 N인 경우 Rg4는 존재하지 않는다.
- 제1항에 있어서,중량평균 분자량이 1,000,000 g/mol 내지 3,000,000 g/mol이고, 분자량 분포가 1.0 이상 2.0 이하인 변성 공액디엔계 중합체.
- 제1항에 있어서,중합체 전체 중량을 기준으로 Si 함량 및 N 함량이 각각 70 ppm 이상인 변성 공액디엔계 중합체.
- 제1항의 변성 공액디엔계 중합체 및 충진제를 포함하는 고무 조성물.
- 제10항에 있어서,변성 공액디엔계 중합체 100 중량부 및 충진제 0.1 중량부 내지 200 중량부를 포함하는 고무 조성물.
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| CN111212858B (zh) * | 2018-05-08 | 2022-12-02 | 株式会社Lg化学 | 改性共轭二烯类聚合物和包含该改性共轭二烯类聚合物的橡胶组合物 |
| EP3919532A4 (en) | 2019-09-30 | 2022-04-27 | Lg Chem, Ltd. | MODIFIED CONJUGATED DIEN-BASED POLYMER, METHOD OF MANUFACTURE THEREOF AND RUBBER COMPOSITION THEREOF |
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- 2021-08-04 CN CN202180008756.9A patent/CN114929765B/zh active Active
- 2021-08-04 JP JP2022541865A patent/JP7439269B2/ja active Active
- 2021-08-04 WO PCT/KR2021/010226 patent/WO2022031002A1/ko not_active Ceased
- 2021-08-04 BR BR112022014875A patent/BR112022014875A2/pt unknown
- 2021-08-04 KR KR1020210102527A patent/KR102793192B1/ko active Active
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| US4397994A (en) | 1980-09-20 | 1983-08-09 | Japan Synthetic Rubber Co., Ltd. | High vinyl polybutadiene or styrene-butadiene copolymer |
| JPH08193147A (ja) | 1995-01-19 | 1996-07-30 | Yokohama Rubber Co Ltd:The | ゴム組成物 |
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| JP2015218284A (ja) * | 2014-05-19 | 2015-12-07 | 旭化成ケミカルズ株式会社 | 重合体の製造方法 |
| KR20190128583A (ko) * | 2018-05-08 | 2019-11-18 | 주식회사 엘지화학 | 변성 공액디엔계 중합체 및 이를 포함하는 고무 조성물 |
Non-Patent Citations (1)
| Title |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2023509737A (ja) | 2023-03-09 |
| US12410272B2 (en) | 2025-09-09 |
| EP4067397B1 (en) | 2024-05-22 |
| EP4067397A1 (en) | 2022-10-05 |
| US20230093015A1 (en) | 2023-03-23 |
| BR112022014875A2 (pt) | 2023-02-28 |
| TWI880010B (zh) | 2025-04-11 |
| CN114929765B (zh) | 2024-07-19 |
| KR102793192B1 (ko) | 2025-04-09 |
| JP7439269B2 (ja) | 2024-02-27 |
| TW202219074A (zh) | 2022-05-16 |
| KR20220017853A (ko) | 2022-02-14 |
| CN114929765A (zh) | 2022-08-19 |
| EP4067397A4 (en) | 2023-07-26 |
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