Modified polysiloxanes, rubber compositions and tire tread rubber compositions containing the same, and reactive plasticizer

摘要

PCT No. PCT/JP97/04899 Sec. 371 Date Aug. 26, 1998 Sec. 102(e) Date Aug. 26, 1998 PCT Filed Dec. 26, 1997 PCT Pub. No. WO98/29473 PCT Pub. Date Jul. 9, 1998A polysiloxane having a siloxane structure of the following formulas (1) and (2): wherein, R1 is a C1 to C6 alkyl group or C1 to C21 acyl group, a is 1 to 200, b is 1 to 200, t is 2 or 3 and r is 1 to 100, and a rubber composition containing the same.