PROCESS FOR THE MANUFACTURE OF QUALITY RECLAIMED RUBBER

摘要

A process for the manufacture of devulcanized rubbers from a base material of rubber crumbs derived from tire scraps and other high filler loaded rubber products, post industrial wastes, rubber rejects, and use-exhausted rubber articles. The process comprises mixing the rubber crumbs with a particular polymeric additive composition at elevated temperature until devulcanization to the desired viscosity is obtained. The process can be carried out in one stage using conventional rubber processing equipment. The resulting devulcanized rubber is of exceptionally high quality and can be used in products demanding dynamic physical properties such as tire and tire retreads formulations in blends with virgin rubbers.