Patent ID: 7893164
Filing Date: 2011-02-22
Classification: B60C,C08C,C08K,C08L

Abstract:
1. A method for producing a conjugated diolefin (co)polymer rubber, which comprises polymerizing either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound in a hydrocarbon solvent by anionic polymerization using at least one compound selected from the group consisting of an organic alkali metal and an organic alkaline earth metal as an initiator, thereafter reacting a living polymer chain end thereof with a polyisocyanate compound to bond one isocyanate group of the polyisocyanate compound and the chain end of the living polymer, and then reacting a residual isocyanate group of the polyisocyanate compound bonded to the living polymer chain end with an alkoxysilane compound comprising an active hydrogen functional group wherein the residual isocyanate group of the polyisocyanate compound bonded to the living polymer chain is bonded to the active hydrogen functional group of the alkoxysilane compound, wherein the conjugated diolefin (co)polymer rubber is represented by the following formula (1) wherein P is a conjugated diolefin or a (co)polymer chain of a conjugated diolefin and an aromatic vinyl compound, X is any one of a nitrogen atom, an oxygen atom and a sulfur atom R 1 is an alkyl group having 1 to 20 carbon atoms or an aryl group, R 2 is an alkylene group having 1 to 12 carbon atoms, R 3 and R 4 are each independently an alkyl group having 1 to 20 carbon atoms or an aryl group, R 5 has no bond, or is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or an aryl group, k is an integer of 2 to 4, 1 is an integer of 1 to 3, m is an integer of 1 to 3, and n is an integer of 1 to 3, provided that 1+m≦k.