RUBBER COMPOSITION FOR TIRE

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition for tire improved with frictional property on ice and abrasion resistance. SOLUTION: This rubber composition containing (i) 100 pts.wt. diene-based rubber, and (ii) 5-20 pts.wt. blowing agent-containing resin containing a mixture of an azodicarbonamide (ADCA) foaming agent and a urea (U) foaming assistant, having (10/90)-(80/20) mixing ratio (U/ADCA) (weight ratio) in the resin is provided with that the resin portion of the foaming agent-containing resin consists mainly of a polyolefin-based resin without having a co-cross-linking property with the diene-based rubber, and the rubber composition has a structure of having microcapsule like bubbles covered by the resin layer as dispersed after the vulcanization. COPYRIGHT: (C)2007,JPO&INPIT