ANTI-REVERSION COAGENTS FOR RUBBER VULCANIZATION

摘要

A rubber composition which is the vulcanization reaction product of a rubber , sulfur or a sulfur donor and particular anti- reversion coagents, is disclosed. The anti-reversion coagents only partially react under sulfur-vulcanization reaction conditions up to optimum cure, and, after optimum cure, form cross-links bonded to the sulfur cross-linked rubbers by carbon-carbon linkages. Also disclosed are a vulcanization process carried out in the presence of th e anti-reversion coagents and the use of these anti- reversion coagents in the sulfur-vulcanization of rubbers. The anti-reversio n coagents of the disclosure provide sulfur-vulcanized rubbers having significantly improved physical properties.