MODIFIED CONJUGATED DIENE POLYMER AND PROCESS FOR PRODUCTION THEREOF, RUBBER REINFORCING AGENT-COMPOUNDED RUBBER COMPOSITION CONTAINING THE MODIFIED CONJUGATED DIENE POLYMER AND PROCESS FOR PRODUCTION THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a novel silica-compounded rubber composition containing 1,4-cis-polybutadiene rubber which is graft-modified with polyacrylamide and attains low hysteresis loss and low heat generation. SOLUTION: The rubber reinforcing agent-compounded rubber composition comprises a conjugated diene rubber (A) which is graft-modified by using radical polymerization (NMP method) of an acrylamide polymer with a nitroxide compound, a vulcanizable rubber (B) other than (A), and a rubber reinforcing agent (C) added thereto. COPYRIGHT: (C)2011,JPO&INPIT