ORGANOPOLYSILOXANE AND RUBBER COMPOSITION

WIPO Patent Application WO/2024/101081

A1

This organopolysiloxane represented by average composition formula (1) can realize, when being added to a rubber composition, a desired low fuel consumption tire having excellent vulcanization characteristics, tensile characteristics after vulcanization, wet-grip properties, and low rolling resistance performance.　(1): (R1)a(R2)b(OR3)c(R4)dSiO(4-2a-b-c-d)/2 (Each R1 independently represents an arylene group having 6-10 carbon atoms or an alkylene group having 1-10 carbon atoms, each R2 independently represents a mercapto group-containing organic group, each R3 independently represents a hydrogen atom, an alkyl group having 1-20 carbon atoms, an aryl group having 6-10 carbon atoms, an aralkyl group having 7-10 carbon atoms, or an alkenyl group having 2-10 carbon atoms, each R4 independently represents an alkyl group having 1-12 carbon atoms, and a, b, c, and d represent numbers satisfying 0