Patent ID: 8980987
Filing Date: 2015-03-17
Classification: B60C,C08C,C08F,C08K

Abstract:
1. A method for producing a modified conjugated diene rubber, the method comprising: (a) reacting a conjugated diene polymer comprising an alkali metal or alkaline earth metal active end with a first alkoxysilane compound comprising: an alkoxysilyl group comprising two or more alkoxy groups; and a group protected by a protecting group and capable of being deprotected, to obtain a modified conjugated-diene polymer comprising a first alkoxysilyl group; and (b) reacting the modified conjugated-diene polymer comprising the first alkoxysilyl group with a second alkoxysilane compound comprising a second alkoxysilyl group in the presence of a condensation catalyst comprising a metallic element, to form a modified conjugated-diene rubber, wherein the conjugated diene polymer is obtained by polymerizing a conjugated diene compound or by polymerizing a conjugated diene compound with an aromatic vinyl compound.