PROCESSES FOR PRODUCTION OF SURFACE-MODIFIED RUBBERS

摘要

A process for producing a surface-modified rubber useful as a recycled material having characteristics inherent in vulcanized rubber by dipping a waste vulcanized rubber resulting from scrap tires or the like in a dilution of a silane coupling agent in a solvent to thereby improve the surface adhesiveness of the rubber, in which process a 0.5 to 5% dilution of a silane coupling agent which is of mercapto type or contains an S-S linkage is preferably used as the dilution. A process for producing a surface-modified rubber having a surface contact angle of 80 DEG or below by subjecting a vulcanized rubber to corona discharge treatment or the like. In this process, it is preferable to additionally subject the vulcanized rubber also to treatment with a silane coupling agent.