Modified conjugated diene polymer, method for preparing the same and rubber composition comprising the same
a conjugated diene polymer and modified technology, applied in the field of modified conjugated diene polymer, can solve the problems of low dispersibility of silica in rubber, hydrophilic silica having a disadvantage of hydrophilic silica, etc., and achieve the effects of improving the compatibility of reinforcing fillers, and improving the dispersibility of silica
Active Publication Date: 2016-08-25
LG CHEM LTD
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Benefits of technology
[0020]As apparent from the foregoing, the rubber composition comprising the modified conjugated diene polymer according to the present invention, when mixed with silica as a reinforcing filler, advantageously, exhibits superior compatibility with a reinforcing filler, heat generation, tensile strength and abrasion resistance, low fuel consumption and excellent wet skid resistance.BEST MODE
[0021]Hereinafter, the modified conjugated diene polymer, the method for preparing the same, the rubber composition comprising the same, the tire comprising the rubber composition and the like will be described in detail.
[0022]The modified conjugated diene polymer according to the present invention comprises a polymer represented by the following Formula 1:
[0023]wherein R1, R2 and R3 represent an alkylene group (—(CH2)n—, n=1˜15), R4, R5, R6, R7 and R9 each independently represent an alkyl group or an alkylsilyl group, R8 represents a C1-C15 alkyl group, and P is a conjugated diene polymer chain.
[0024]In Formula 1, a is an integer of 0 to 2, b is an integer of 0 to 2 and c is an integer of 1 to 3 with the proviso that a+b+c equals 3.
[0025]R4, R5, R6, R7 and R9 are for example an alkyl group or a C1-C15 alkyl group.
Problems solved by technology
As compared to carbon black having a hydrophobic surface, silica having a hydrophilic surface has a disadvantage of low dispersibility of silica in rubbers due to low affinity to conjugated diene rubbers.
Method used
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example 2
[0098]A modified conjugated diene polymer was prepared in the same manner as in Example 1, except that 3 mmol of 3-dimethylamino-2-((dimethylaminomethyl)propyl)trimethoxysilane was added as a modifying agent. Analysis results of the modified conjugated diene polymer are shown in the following Table 1.
example 3
[0099]A modified conjugated diene polymer was prepared in the same manner as in Example 1, except that that 3-dimethylamino-2-((dimethylaminomethyl)propyl)triethoxysilane was added instead of the 3-dimethylamino-2-((dimethylaminomethyl)propyl)trimethoxysilane as a modifying agent. Analysis results of the modified conjugated diene polymer are shown in the following Table 1.
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Abstract
Disclosed is a modified conjugated diene polymer represented by Formula 1. Advantageously, provided are a modified conjugated diene polymer which exhibits superior compatibility with a reinforcing filler, heat generation, tensile strength and abrasion resistance, low fuel consumption and excellent wet skid resistance, a method for preparing the same and a rubber composition comprising the same.
Description
TECHNICAL FIELD[0001]The present invention relates to a modified conjugated diene polymer, a method for preparing the same and a rubber composition comprising the same. The present invention relates to a modified conjugated diene polymer which exhibits superior compatibility with a reinforcing filler, heat generation, tensile strength and abrasion resistance, low fuel consumption and excellent wet skid resistance, a method for preparing the same and a rubber composition comprising the same.BACKGROUND ART[0002]Concerns about environments including inhibition of carbon dioxide are socially demanded. As such, there is a growing demand for low fuel consumption of vehicles. Accordingly, there is an increasing demand for materials having superior wet skid resistance, abrasion resistance and breaking strength as materials for vehicle tires, in particular, tire treads contacting the roads.[0003]Meanwhile, carbon black, silica and the like are used as reinforcing fillers for tire treads. Whe...
Claims
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IPC IPC(8): C08K3/36C08K3/04C07F7/18C08F236/14
CPCC08F236/10C08K5/548B60C1/00C08C19/25C07F7/1836C08C19/44C08K3/36C08K3/04C08F236/14C08L15/00C08L9/00C07F7/1804
InventorLEE, SANG MIKIM, KYOUNG HOONCHOI, YOUNG CHELLEE, RO MICHOI, HEUNG YEALCHUN, MOON SEOK
OwnerLG CHEM LTD