WO2014175562A1 - 변성 공액 디엔계 중합체의 연속 제조방법, 이로부터 수득된 중합체 및 이를 포함하는 고무 조성물 - Google Patents
변성 공액 디엔계 중합체의 연속 제조방법, 이로부터 수득된 중합체 및 이를 포함하는 고무 조성물 Download PDFInfo
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- WO2014175562A1 WO2014175562A1 PCT/KR2014/002624 KR2014002624W WO2014175562A1 WO 2014175562 A1 WO2014175562 A1 WO 2014175562A1 KR 2014002624 W KR2014002624 W KR 2014002624W WO 2014175562 A1 WO2014175562 A1 WO 2014175562A1
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- Prior art keywords
- conjugated diene
- modified conjugated
- based polymer
- polymer
- weight
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- GDOPTJXRTPNYNR-UHFFFAOYSA-N CC1CCCC1 Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/22—Incorporating nitrogen atoms into the molecule
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/25—Incorporating silicon atoms into the molecule
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- 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
Definitions
- the present disclosure relates to a continuous process for producing a modified conjugated diene-based polymer, a polymer obtained therefrom, and a rubber composition including the same, and more particularly, to a modified conjugated diene-based polymer having high molecular weight and excellent processability due to control of molecular weight distribution.
- a continuous process, a polymer obtained therefrom and a rubber composition comprising the same.
- the tire tread was used in combination with an inorganic filler in order to reinforce the above properties in the conjugated diene rubber, but there was a problem in that the hysteresis loss was large or the dispersibility was inferior.
- an object of the present invention is to provide a continuous production method of a modified conjugated diene-based polymer having high molecular weight and excellent processability due to molecular weight distribution control.
- an object of this invention is to provide the modified conjugated diene type polymer obtained by the said manufacturing method, and the rubber composition containing this, and the tire containing this rubber composition.
- the present invention comprises the steps of (a) polymerizing a conjugated diene monomer or conjugated diene monomer and a vinyl aromatic monomer using an organometallic compound in a solvent to form an active polymer having a metal end; And (b) the following Chemical Formula 1 in the active polymer
- R 1 is an alkyl group or an alkylsilyl group
- R 2 is an alkyl group or an alkylene group
- R 3 and R 4 are an alkyl group
- a is an integer of 1 to 3
- n is an integer of 0 to 2.
- the two R 1 which binds to nitrogen may be the same or different from each other, and in the same manner, when 3-n is 2 or more, corresponding groups may be the same or different from each other. It provides a method for continuously preparing a modified conjugated diene-based polymer comprising the step of modifying the compound.
- the present substrate is obtained from the above production method, the following formula (2)
- R 1 is an alkyl group or an alkylsilyl group
- R 2 is an alkyl group or an alkylene group
- R 3 and R 4 are alkyl groups
- a is an integer of 1 to 3
- l and k are an integer of 0 to 2
- m is Is an integer from 1 to 3
- p is a conjugated diene-based polymer chain
- b is an integer from 1 to 3.
- two R bound to nitrogen 1 may be the same as or different from each other, and in the same manner, when l and m are 2 or more, corresponding groups may be the same or different from each other.
- the present disclosure provides a modified conjugated diene-based polymer rubber composition containing 0.1 to 200 parts by weight of an inorganic filler based on 100 parts by weight of the modified conjugated diene-based polymer.
- the present disclosure provides a tire including the modified conjugated diene-based polymer rubber composition.
- the continuous production method of the modified conjugated diene-based polymer of the present disclosure comprises the steps of (a) polymerizing a conjugated diene-based monomer or a conjugated diene-based monomer and a vinyl aromatic monomer using an organometallic compound in a solvent to form an active polymer having metal ends. ; And (b) the following Chemical Formula 1 in the active polymer
- R 1 is an alkyl group or an alkylsilyl group
- R 2 is an alkyl group or an alkylene group
- R 3 and R 4 are an alkyl group
- a is an integer of 1 to 3
- n is an integer of 0 to 2.
- the two R 1 which binds to nitrogen may be the same or different from each other, and in the same manner, when 3-n is 2 or more, corresponding groups may be the same or different from each other. It is characterized by comprising a; a step of modifying the compound.
- the compound is bis (methyldimethoxysilylpropyl) -N-methylamine, bis (trimethoxysilylpropyl) -N-methylamine, Bis (diethoxymethylsilyl propyl) -N-methylamine, or diethylaminopropyltrimethoxysilane.
- the conjugated diene monomer is, for example, 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, isoprene and 2-phenyl-1,3- It may be at least one selected from the group consisting of butadiene.
- the vinyl aromatic monomers are, for example, styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, 4- (p-methylphenyl) styrene, and 1 It may be one or more selected from the group consisting of -vinyl-5-hexyl naphthalene, and may be styrene or ⁇ -methylstyrene as another example.
- the vinyl aromatic monomer may be 0.0001 to 50% by weight, 10 to 40% by weight or 20 to 40% by weight based on a total of 100% by weight of the conjugated diene monomer and the aromatic vinyl monomer.
- the solvent may be at least one selected from the group consisting of hydrocarbon, n-pentane, n-hexane, n-heptane, isooctane, cyclohexane, toluene, benzene and xylene, for example.
- the organometallic compound may be, for example, at least one selected from the group consisting of an organoalkali metal compound, an organolithium compound, an organosodium compound, an organopotassium compound, an organo rubidium compound, and an organo cesium compound.
- the organometallic compound may be methyllithium, ethyllithium, isopropyllithium, n-butyllithium, sec-butyllithium, tert-butyllithium, n-decyllithium, tert-octylithium, phenyllithium, 1- 1 type selected from the group consisting of naphthyllithium, n-eicosilithium, 4-butylphenyllithium, 4-tolyllithium, cyclohexyllithium, 3,5-di-n-heptylcyclohexyl lithium and 4-cyclopentyllithium It may be abnormal.
- the organometallic compound is n-butyllithium, sec-butyllithium or a mixture thereof.
- the organometallic compound consists of naphthyl sodium, naphthyl potassium, lithium alkoxide, sodium alkoxide, potassium alkoxide, lithium sulfonate, sodium sulfonate, potassium sulfonate, lithium amide, sodium amide and potassium amide It may be one or more selected from the group, and may also be used in combination with other organometallic compounds.
- the organometallic compound is used in an amount of 0.01 to 10 mmol, 0.05 to 5 mmol, 0.1 to 2 mmol or 0.1 to 1 mmol, based on 100 g of the total monomer.
- the molar ratio of the organometallic compound and the compound represented by Formula 1 is, for example, 1: 0.1 to 1:10, or 1: 0.5 to 1: 2.
- An active polymer having a metal end of the present description means a polymer in which a polymer anion and a metal cation are bonded.
- the method for producing the modified conjugated diene polymer of the present disclosure is, for example, further polymerizing by adding a polar additive during the polymerization of (a).
- the polar additive is, for example, a base, and in another example, an ether, an amine or a mixture thereof, or tetrahydrofuran, ditetrahydropropylpropane, diethyl ether, cyclopentyl ether, dipropyl ether, ethylene glycol diethyl ether , Ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, tertiary butoxyethoxyethane bis (2-dimethylaminoethyl) ether, (dimethylaminoethyl) ethyl ether, trimethylamine, triethylamine, tripropylamine, and tetra It is selected from the group consisting of methylethylenediamine, and another example is ditetrahydropropylpropane, triethylamine or tetramethylethylenediamine.
- the polar additive may be used in an amount of 0.001 to 50 g, 0.001 to 10 g, 0.005 to 1 g, or 0.005 to 0.1 g based on a total of 100 g of the monomer to be added.
- the polar additive may be used in 0.001 to 10 g, or 0.005 to 5 g based on a total of 1 mmol of the organometallic compound introduced.
- block copolymers When copolymerizing conjugated diene-based monomers and vinyl aromatic monomers, block copolymers are generally easy to be produced due to the difference in their reaction rates.However, when the polar additive is added, the reaction rate of vinyl aromatic compounds having a slow reaction rate is increased to correspond. There is an effect of inducing a microstructure of the copolymer, for example, a random copolymer.
- the polymerization of (a) may be anionic polymerization, for example.
- the polymerization of (a) may be a living anion polymerization to obtain the active terminal by the growth reaction by the anion.
- the polymerization of (a) may be, for example, elevated temperature polymerization or constant temperature polymerization.
- the elevated temperature polymerization refers to a polymerization method including a step of raising the reaction temperature by adding heat optionally after adding the organometallic compound, and the constant temperature polymerization means a polymerization method in which no heat is optionally added after adding the organometallic compound. .
- the polymerization temperature of (a) is, for example, -20 to 200 ° C, 0 ° C to 150 ° C or 10 to 120 ° C.
- the step of modifying (b) is, for example, bis (methyldimethoxysilylpropyl) -N-methylamine, bis (trimethoxysilylpropyl) -N-methylamine, bis (diethoxymethylsilyl propyl) -N-methyl Compound selected from amine, diethylaminopropyltrimethoxysilane One or more or two or three kinds can be added.
- step (b) denaturation is to react for 1 minute to 5 hours at 0 to 90 °C, for example.
- the method for preparing the modified conjugated diene polymer of the present disclosure may be, for example, a continuous polymerization method including one or two or more reactors.
- the modified conjugated diene-based polymer of the present disclosure is prepared according to the manufacturing method of the modified conjugated diene-based polymer, for example,
- R 1 is an alkyl group or an alkylsilyl group
- R 2 is an alkyl group or an alkylene group
- R 3 and R 4 are an alkyl group
- a is an integer of 1 to 3
- l and k are an integer of 0 to 2
- m is an integer of 1 to 3
- p is a conjugated diene-based polymer chain
- b is an integer of 1 to 3.
- two or more bonds to nitrogen R 1 may be identical to or different from each other, and in the same manner, when l and m are 2 or more, corresponding groups may be identical to or different from each other.
- R 1 is, for example, an alkyl group having 1 to 12 carbon atoms or an alkylsilyl group having 1 to 12 carbon atoms.
- R 2 is, for example, an alkyl group having 1 to 12 carbon atoms or an alkylene group having 2 to 13 carbon atoms.
- R 3 and R 4 are, for example, alkyl groups having 1 to 12 carbon atoms.
- L may be 0 or 1, for example.
- the k may be, for example, 0 or 1, and there is little hysteresis loss within this range, and there is an effect excellent in compatibility with inorganic fillers, especially silica.
- M may be 1 or 2 as an example, and may be 2 or 3 as another example.
- the p may have a total number of 1 to 9, 1 to 5, or 1 to 3, and when applied to a tire within this range, brings about an excellent wet road resistance and low fuel consumption.
- k may be 1, 1 may be 0, and m may be 2.
- Chemical Formula 2 may be k is 1, l is 1, and m is 1.
- the conjugated diene polymer chain may be, for example, a chain composed of a conjugated diene monomer alone or a conjugated diene monomer and a vinyl aromatic monomer.
- the conjugated diene-based polymer chain is 0.0001 to 50% by weight, 10 to 40% by weight or 20 to 40% by weight of the aromatic vinyl monomer based on a total of 100% by weight of the conjugated diene monomer and the aromatic vinyl monomer. It may be a polymer chain comprising a.
- the polymer chain consisting of the conjugated diene monomer and the vinyl aromatic monomer may be, for example, a random polymer chain.
- the conjugated diene monomer is, for example, 1,3-butadiene, 2,3-dimethyl-1,3-butadiene, piperylene, 3-butyl-1,3-octadiene, isoprene and 2-phenyl-1,3- It may be at least one selected from the group consisting of butadiene.
- the vinyl aromatic monomers are, for example, styrene, ⁇ -methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 1-vinylnaphthalene, 4-cyclohexylstyrene, 4- (p-methylphenyl) styrene, and 1 It may be one or more selected from the group consisting of -vinyl-5-hexyl naphthalene, and another example may be styrene or ⁇ -methylstyrene.
- the modified conjugated diene-based polymer may have a PDI of 0.5 to 10, 0.5 to 5, or 1.0 to 4.0.
- the modified conjugated diene-based polymer may have a pattern viscosity of 30 or more, or 30 to 110.
- the modified conjugated diene-based polymer may have a pattern viscosity of 40 to 100, or 45 to 90.
- the modified conjugated diene-based polymer may have a number average molecular weight (Mn) of 1,000 to 2,000,000 g / mol, 10,000 to 1,000,000 g / mol, or 100,000 to 1,000,000 g / mol.
- Mn number average molecular weight
- the conjugated diene polymer may have a vinyl content of 18% or more, 20% or more, or 30 to 70%.
- the glass transition temperature of the polymer is increased, such as traveling resistance and braking force when applied to a tire. Not only can satisfy the required physical properties of the tire, but also has the effect of reducing fuel consumption.
- the vinyl content refers to the content of the monomer having a vinyl group or the content of the 1,2-added conjugated diene monomer instead of 1,4-addition based on 100% by weight of the conjugated diene monomer.
- the modified conjugated diene-based polymer has a characteristic of viscoelasticity, and when measured at 10 Hz through DMA after silica blending, the Tan ⁇ value (Tan ⁇ at 0 ° C.) at 0 ° C. is, for example, 0.4 to 1, or 0.5 to 1 Within this range, there is an effect that the road surface resistance or the wet resistance is greatly improved compared to the conventional invention.
- Tan ⁇ value (Tan ⁇ at 60 ° C.) at 60 ° C. may be, for example, 0.30 to 0.20, or 0.15 to 0.10. Within this range, the rolling resistance or rotational resistance (RR) is greatly improved as compared with the conventional invention. Effect.
- the modified conjugated diene-based polymer rubber composition of the present disclosure is characterized in that it comprises 0.1 to 200 parts by weight of the inorganic filler with respect to 100 parts by weight of the modified conjugated diene-based polymer.
- the modified conjugated diene polymer rubber composition may further include, for example, another conjugated diene polymer.
- the other conjugated diene-based polymer may be, for example, styrene-butadiene rubber (SBR), butadiene rubber (BR), natural rubber, or a mixture thereof.
- SBR styrene-butadiene rubber
- BR butadiene rubber
- natural rubber or a mixture thereof.
- the SBR may be, for example, solution styrene-butadiene rubber (SSBR).
- SSBR solution styrene-butadiene rubber
- the modified conjugated diene-based polymer rubber composition of the present disclosure may be made of, for example, 20 to 100 parts by weight of the modified conjugated diene-based polymer and 0 to 80 parts by weight of the other conjugated diene-based polymer.
- the modified conjugated diene-based polymer rubber composition of the present disclosure may include 20 to 99 parts by weight of the modified conjugated diene-based polymer and 1 to 80 parts by weight of the other conjugated diene-based polymer.
- the modified conjugated diene-based polymer rubber composition of the present invention is 10 to 100 parts by weight of the modified conjugated diene-based polymer, 0 to 90 parts by weight of other conjugated diene-based polymer, 0 to 100 parts by weight of carbon black, silica 5 To 200 parts by weight and the silane coupling agent may comprise 2 to 20 parts by weight.
- the modified conjugated diene-based polymer rubber composition of the present invention is 10 to 100 parts by weight of the modified conjugated diene-based polymer, 0 to 90 parts by weight of other conjugated diene-based polymer, 0 to 100 parts by weight of carbon black, silica 5 To 200 parts by weight and 2 to 20 parts by weight of the silane coupling agent, the sum of the weight of the modified conjugated diene-based polymer and other conjugated diene-based polymer may be 100 parts by weight.
- the modified conjugated diene-based polymer rubber composition of the present disclosure is carbon black in 100 parts by weight of the polymer mixture consisting of 10 to 99% by weight of the modified conjugated diene-based polymer and 1 to 90% by weight of the conjugated diene-based polymer. It may be composed of 1 to 100 parts by weight, silica 5 to 200 parts by weight and 2 to 20 parts by weight of the silane coupling agent.
- the inorganic filler may be, for example, 10 to 150 parts by weight, or 50 to 100 parts by weight.
- the inorganic filler may be, for example, carbon black, silica filler, or a mixture thereof.
- the inorganic filler may be silica, in which case the dispersibility is greatly improved, and the hysteresis loss is greatly reduced by bonding (sealing) the silica particles to the ends of the modified conjugated diene-based polymer of the present disclosure. There is.
- the modified conjugated diene-based polymer rubber composition may further include 1 to 100 parts by weight of oil.
- the oil may be, for example, a mineral oil or a softener.
- the oil may be used in an amount of 10 to 100 parts by weight or 20 to 80 parts by weight with respect to 100 parts by weight of the conjugated diene copolymer, and exhibits good physical properties within this range, and further softens the rubber composition to have excellent processability. It works.
- the modified conjugated diene-based polymer rubber composition may be used as a material of a tire or a tire tread, for example.
- the tire of the present disclosure is characterized by being manufactured including the modified conjugated diene-based polymer rubber composition of the present disclosure.
- the first and second reactors were used as polymerization reactors, and the third reactor was used as a modified reactor.
- the mixture was premixed before entering the reactor at a rate of 2.373 kg / h of styrene, 3.756 kg / h of 1,3-butadiene, and 4.086 kg / h of normal hexane from which impurities such as moisture were removed.
- the mixed solution was continuously fed to the reactor 1, followed by feeding the reactor 1 to the reactor at a rate of 4.29 g / h 2,2-bis (2-oxoranyl) propane and 22.32 mmol / h of n-butyllithium as a polar additive.
- the temperature inside the reactor was adjusted to 80 ° C.
- the polymer of the first reactor was continuously fed to the top of the second reactor and the temperature was maintained at 80 ° C.
- the polymer of the second reactor was continuously fed to the top of the third reactor, bis (diethoxymethylsilylpropyl) -N-methylamine was continuously fed at a rate of 10.27 mmol / h and the modification was carried out.
- the polymerization product of the reactor 3 was mixed with isopropyl alcohol and an antioxidant (wingstay-K) at 8: 2 at a rate of 325 g / h to terminate the polymerization.
- N, N, N ', N'-tetramethylethylenediamine was continuously added to the reactor 1 at a rate of 3.9 g / h instead of 2,2-bis (2-oxoranyl) propane as a polar additive in Example 1.
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 1 except that there was supplied. The analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1 below.
- Example 2 1.41 mmol / h of N, N, N ', N'-tetraglycidyl-m-xylenediamine as a coupling agent was added instead of bis (diethoxymethylsilylpropyl) -N-methylamine as a denaturant in Example 2.
- a modified conjugated diene-based polymer was prepared in the same manner as in Example 2, except that. The analysis results of the modified conjugated diene-based polymer thus prepared are shown in Table 1.
- Mooney Viscosity ALPHA Technologies Inc. MV-2000 was used to preheat for 1 minute using two or more specimens weighing 15g and measured for 4 minutes at 100 °C.
- Mw Weight average molecular weight
- Mn number average molecular weight
- PDI molecular weight distribution
- Each of A, B, C and D in the samples shown in Table 1 was used as a raw material rubber, and blended under the mixing conditions shown in Table 2 to prepare a conjugated diene-based polymer rubber composition.
- the unit of raw material in Table 2 is phr based on 100 parts by weight of rubber.
- a short-bar mixer equipped with a temperature control device is used, and in the kneading of the first stage, raw rubber (conjugated diene-based polymer), filler, organosilane coupling agent, oil, Zincation, stearic acid antioxidants, antioxidants, waxes and accelerators were kneaded.
- the temperature of the kneader was controlled, and the primary blend was obtained at the discharge temperature of 145-155 degreeC.
- the primary blend was cooled to room temperature as the second stage kneading
- rubber, sulfur, and a vulcanization accelerator were added to the kneader, and the mixture was mixed at a temperature of 100 ° C. or lower to obtain a secondary blend.
- the vulcanized rubber was produced through a curing tilde at 100 ° C. for 20 minutes.
- the Tan ⁇ value was measured by changing the strain at a frequency of 10 Hz and each measurement temperature (-60 to 60 ° C.) in the torsion mode.
- the Payne effect is expressed as the difference between the minimum and maximum values at 0.28% to 40% of the strain.
- the smaller the Faye effect the better the dispersibility of the filler such as silica.
- the higher the low temperature 0 [deg.] C. Tan ⁇ value the better the wet road surface resistance.
- the lower the high temperature 60 [deg.] C. Tan ⁇ value the lower the hysteresis loss and the lower the rolling resistance of the tire, that is, the lower fuel efficiency.
- Table 3 shows the physical properties of the vulcanized rubber.
- the Tan ⁇ value at 60 ° C. was lower than that of Comparative Examples 3 and 4, and the tire contained the modified conjugated diene-based polymer of the present disclosure. In the case of cloud resistance was confirmed to have a lower value than the prior art.
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Abstract
Description
구분 | 실시예 | 비교예 | |||
1 | 2 | 1 | 2 | ||
시료 | A | B | C | D | |
n-부틸리튬(mmol/h) | 22.32 | 22.32 | 22.32 | ||
극성첨가제(g/h) | a | 4.29 | - | 4.29 | |
b | - | 3.9 | - | - | |
변성제(mmol/h) | c | 10.27 | 10.27 | - | - |
커플링제(g/h) | d | - | - | 1.41 | - |
오일 | 종류 | TDAE | TDAE | TDAE | RAE |
phr | 37.9 | 37.3 | 37.2 | 37.5 | |
무니점도(MV) | 70 | 73 | 82 | 53 | |
NMR(%) | SM | 36 | 35 | 34 | 36 |
Vinyl | 28 | 25 | 26 | 26 | |
GPC (x104) | Mn | 54 | 66 | 72 | 33 |
Mw | 112 | 116 | 159 | 94 | |
PDI | 2.1 | 1.8 | 2.2 | 2.8 |
구분 | 물질 | 함량(단위: 중량부) |
1단혼련 | 고무 | 137.5 |
실리카 | 70.0 | |
커플링제 | 11.2 | |
오일 | - | |
아연화 | 3.0 | |
스테아르산 | 2.0 | |
산화방지제 | 2.0 | |
노화방지제 | 2.0 | |
왁스 | 1.0 | |
2단혼련 | 고무촉진제 | 1.75 |
황 | 1.5 | |
가황촉진제 | 2.0 | |
총 중량 | 233.95 | |
구분 | 실시예 3 | 실시예 4 | 비교예 3 | 비교예4 |
시료 | A | B | C | D |
300% 모듈러스(Kgf/cm2) | 136 | 126 | 122 | 120 |
인장강도(Kgf/cm2) | 167 | 174 | 198 | 193 |
Tanδ at 0℃ | 0.834 | 0.686 | 0.655 | 0.647 |
Tanδ at 60℃ | 0.109 | 0.106 | 0.110 | 0.137 |
60℃ △G'(페이니 효과) | 0.46 | 0.43 | 0.51 | 0.54 |
Claims (17)
- (a) 공액 디엔계 단량체 또는 공액 디엔계 단량체와 비닐 방향족 단량체를 용매 하에서 유기금속 화합물을 이용하여 중합시켜 금속 말단을 갖는 활성 중합체를 형성하는 단계; 및(b) 상기 활성 중합체에 하기 화학식 1[화학식 1](R1은 알킬기 또는 알킬실릴기이고, R2는 알킬기 또는 알킬렌기이며, R3 및 R4는 알킬기이고, a는 1 내지 3의 정수이고, n은 0 내지 2의 정수이다. 또한, n이 2인 경우 질소에 결합하는 두 개의 R1은 서로 동일하거나 다를 수 있고, 동일한 방식으로 3-n이 2 이상인 경우에 그에 해당하는 기들(groups)은 서로 동일하거나 다를 수 있다.)로 표시되는 화합물을 투입하여 변성시키는 단계;를 포함하여 이루어지는 것을 특징으로 하는 변성 공액 디엔계 중합체의 연속 제조방법.
- 제 1항에 있어서,상기 화학식 1로 표시되는 화합물은 비스(메틸디메톡시실릴프로필)-N-메틸아민, 비스(트리메톡시실릴프로필)-N-메틸아민, 비스(디에톡시메틸실릴 프로필)-N-메틸아민 및 디에틸아미노프로필트리메톡시실란 중에서 선택된 1종 이상인 것을 특징으로 하는 변성 공액 디엔계 중합체의 연속 제조방법.
- 제 1항에 있어서,상기 유기금속 화합물은, 상기 단량체 총 100 g을 기준으로 0.01 내지 10 mmol로 사용되는 것을 특징으로 하는 변성 공액 디엔계 중합체의 연속 제조방법.
- 제 1항에 있어서,상기 유기금속 화합물과 상기 화학식 1로 표시되는 화합물의 몰비는, 1: 0.1 내지 1: 10인 것을 특징으로 하는 변성 공액 디엔계 중합체의 연속 제조방법.
- 제 1항에 있어서,상기 (a)의 중합은, 극성첨가제가 더 투입되는 것을 특징으로 하는 변성 공액 디엔계 중합체의 연속 제조방법.
- 제 5항에 있어서,상기 극성첨가제는, 상기 유기금속 화합물 총 1 mmol을 기준으로 0.001 내지 50 g으로 투입되는 것을 특징으로 하는 변성 공액 디엔계 중합체의 연속 제조방법.
- 제 1항 내지 제 6항 중 어느 한 항의 변성 공액 디엔계 중합체의 연속 제조방법에 따라 제조되고, 하기 화학식 2[화학식 2](R1은 알킬기 또는 알킬실릴기이고, R2는 알킬기 또는 알킬렌기이고, R3 및 R4는 알킬기이며, a는 1 내지 3의 정수이고, l 및 k는 0 내지 2의 정수이며, m은 1 내지 3의 정수이고, l+k+m은 3을 만족하며, p 는 공액 디엔계 폴리머 사슬이고, b는 1 내지 3의 정수이다. 또한, k가 2인 경우 질소에 결합하는 두 개의 R1은 서로 동일하거나 다를 수 있고, 동일한 방식으로 l과 m이 2 이상인 경우에 그에 해당하는 기들(groups)은 서로 동일하거나 다를 수 있다.)로 표시되는 중합체인 것을 특징으로 하는 변성 공액 디엔계 중합체.
- 제 7항에 있어서,상기 화학식 2는, k가 1이고, l이 1이며, m이 1인 것을 특징으로 하는 변성 공액 디엔계 중합체.
- 제 7항에 있어서,상기 공액 디엔계 폴리머 사슬은, 공액 디엔 단량체 및 비닐 방향족 단량체를 포함하여 이루어진 랜덤 공중합체 사슬인 것을 특징으로 하는 변성 공액 디엔계 중합체.
- 제 7항에 있어서,상기 변성 공액 디엔계 중합체는, 수평균분자량이 1,000 내지 2,000,000 g/mol인 것을 특징으로 하는 변성 공액 디엔계 중합체.
- 제 7항에 있어서,상기 변성 공액 디엔계 중합체는, 비닐 함량이 18% 이상인 것을 특징으로 하는 변성 공액 디엔계 중합체.
- 제 7항에 있어서,상기 변성 공액 디엔계 중합체는, 공액디엔계 단량체와 방향족 비닐계 단량체를 합한 총 100 중량%를 기준으로 방향족 비닐계 단량체가 10 내지 50 중량%로 포함된 것을 특징으로 하는 변성 공액 디엔계 중합체.
- 제 7항에 있어서,상기 변성 공액 디엔계 중합체는, 분자량 분포(PDI)가 1 내지 4인 것을 특징으로 하는 변성 공액디엔계 중합체.
- 제 7항 내지 제 13항 중 어느 한 항의 변성 공액 디엔계 중합체 100 중량부에 대하여 무기 충진제 0.1 내지 200 중량부를 포함하여 이루어지는 것을 특징으로 하는 변성 공액 디엔계 중합체 고무 조성물.
- 제 14항에 있어서,상기 변성 공액디엔계 중합체 10 내지 100 중량%와 이와 다른 공액 디엔계 중합체 0 내지 90 중량%로 이루어진 중합체 혼합물 100 중량부에 카본블랙 0 내지 100 중량부, 실리카 5 내지 200 중량부 및 실란 커플링제 2 내지 20 중량부를 포함하여 이루어지는 것을 특징으로 하는 변성 공액 디엔계 중합체 고무 조성물.
- 제 14항에 있어서,상기 무기 충진제는, 실리카계 충진제인 것을 특징으로 하는 변성 공액 디엔계 중합체 고무 조성물.
- 제 14항의 변성 공액 디엔계 중합체 고무 조성물을 포함하여 이루어진 타이어.
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