Modified diene polymer rubbers

Details Modified diene polymer rubbers Modified diene polymer rubbers

C - Chemistry, Metallurgy

08

F

400/5051, 402/7.

C08F 8/42 (2006.01) B60C 1/00 (2006.01) C08C 19/42 (2006.01)

Patent

CA 1338805

A process for preparing modified diene polymer rubbers having an increased impact resilience, a reduced hardness at low temperatures and an improved processability, and useful as rubber materials for automobile tires and other industries which comprises producing a conjugated diene polymer having alkali metal end or ends, and reacting the alkali metal-containing polymer with (a) a silicon or tin compound of the formula: RaMXb wherein R is an alkyl group, an alkenyl group, a cycloalkenyl group or an aromatic hydrocarbon group, M is silicon atom or tin atom, X is a halogen atom, a is 0, 1 or 2 and b is 2, 3 or 4, and (b) at least one member selected from the group consisting of a nitro compound; a phosphoryl chloride compound of the formula (1): Image (1) wherein R1, R2, R3 and R4 are an alkyl group; an aminosilane compound of the formula (2): Image (2) wherein R5, R6 and R7 are an alkyl group or an alkoxyl group, R8 and R9 are an alkyl group, and n is an integer; an acrylamide compound of the formula (3): Image (3) wherein R10 is hydrogen atom or methyl group, R11 and R12 are an alkyl group, and m is an integer; and an aminovinylsilane compound of the formula (4): Image (4) wherein R13 R14, R15, R16 and R17 are an alkyl group.

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