| 主权项 |
1. A rubber composition for a tire, comprising:
silica contained in a quantity from 60 to 200 parts by mass per 100 parts by mass of diene rubber; a polysiloxane represented by Formula (1) as a sulfur-containing silane coupling agent, contained in a quantity from 1 to 20 mass % relative to the content of silica; and a thiuram disulfide vulcanization accelerator represented by Formula (I), contained in a quantity from 0.05 to 3.0 parts by mass;
(A)a(B)b(C)c(D)d(R1)eSiO(4-2a-b-c-d-e)/2 (1) Formula (1) is an average composition formula, and in Formula (1), A is a divalent organic group containing a sulfide group; B is a monovalent hydrocarbon group having from 5 to 10 carbon atoms; C is a hydrolyzable group; D is an organic group containing a mercapto group; R1 is a monovalent hydrocarbon group having from 1 to 4 carbon atoms; and a to e satisfy the relational expressions 0≦a<1, 0≦b<1, 0<c<3, 0<d<1, 0≦e<2, and 0<2a+b+c+d+e<4; however, one of either a or b is not 0; in Formula (I), R5, R6, R7, and R8 are, each independently, a hydrocarbon group having from 2 to 18 carbon atoms. |
