RUBBER COMPOSITION CONTAINING ENZYMATICALLY DECOMPOSED RUBBER DECOMPOSED BY LIGNASE, ITS MANUFACTURING PROCESS AND PNEUMATIC TIRE USING THIS

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition which contains an enzymatically decomposed vulcanized rubber decomposed by lignase as a reclaimed rubber and yet has a breaking strength and a wear resistance nearly equal to those a rubber composition consisting of virgin rubber has. SOLUTION: The rubber composition contains the enzymatically decomposed vulcanized rubber decomposed by lignase. Preferably, the rubber composition is a blend of 0.5-50 pts.mass of the enzymatically decomposed rubber and 100 pts.mass of a rubber ingredient consisting of natural rubber and/or a diene rubber. Preferably, the diameter of the vulcanized rubber before the decomposition is≤1 mm. The rubber composition is favorably used for tire treads, sidewalls, carcass plies, belt plies, etc. for pneumatic tires. COPYRIGHT: (C)2005,JPO&NCIPI