Patent ID: 8614272
Filing Date: 2013-12-24
Classification: B60C,C08C,C08F,C08K,C08L

Abstract:
1. A tire rubber composition comprising: a rubber component including a diene polymer; silica; and a silane coupling agent represented by the following formula (4); and/or a silane coupling agent that is a copolymer comprising units A represented by the following formula (5) and units B represented by the following formula (6), wherein the proportion of the units B is 1 to 70 mol % of the total molar amount of the units A and the units B: wherein R wherein x and y each represent an integer of 1 or larger; R the diene polymer being a modified diene polymer obtained by reacting a compound (A) and a compound (B), the compound (A) being an active alkali metal-terminated conjugated diene polymer obtained by polymerizing a conjugated diene monomer alone or with an aromatic vinyl monomer, in the presence of a compound (C), the compound (B) being a modifying agent having a functional group, and the compound (C) being a chemical species obtained by reacting an organic alkali metal compound with a compound represented by the following formula (1): wherein R