PRODUCTION METHOD OF MODIFIED HYDROGENATED NATURAL RUBBER, MODIFIED HYDROGENATED NATURAL RUBBER, RUBBER COMPOSITION AND PNEUMATIC TIRE

摘要

PPROBLEM TO BE SOLVED: To provide a production method of a modified hydrogenated natural rubber which is excellent in the reinforcement by and affinity to carbon black and/or silica, is improved in low loss property and wear resistance, and is improved in deterioration resistance, heat resistance, weather resistance and the like, without much impairing high strength being inherent in natural rubber, to provide the modified hydrogenated natural rubber and a rubber composition, and to provide a pneumatic tire using the composition. PSOLUTION: The production method of a modified hydrogenated natural rubber comprises (1) a modification reaction step of performing graft polymerization of a polar group-containing monomer on the natural rubber in a natural rubber latex, (2) a hydrogenation reaction step of partially hydrogenating unsaturated bond in the natural rubber and (3) a coagulation and drying step. The modified hydrogenated natural rubber, the rubber composition and the pneumatic tire using the composition are also provided. PCOPYRIGHT: (C)2008,JPO&INPIT