CURED RUBBER SKIM STOCK CONTAINING A COBALT OR NICKEL/DICARBOXYLIC ACID COMPLEX

摘要

This invention is directed toward a rubber skim stock composition and a product containing the skim stock having improved adhesion and adhesion retention with metallic reinforcement cords such as brassed steel. The invention composition comprises a vulcanizable rubber skim stock and an organic complex of cobalt or nickel with a dicarboxylic acid and is prepared by mixing the cobalt or nickel complex with the rubber skim stock prior to containing the metallic reinforcement. Tests conducted with brass-plate steel cords showed satisfactory and improved metal adhesion, percent rubber coverage and metal adhesion retention with use of the rubber skim stock of this invention when compared to existing formulations containing known adhesion promoting cobalt additives.