Sulfur-curable rubber skim stock compositions containing dithiodipropionic acid

摘要

A sulfur-curable rubber skim stock which upon curing exhibits improved adhesion to brass-plated steel under high humidity, heat aging conditions is provided. The sulfur-curable rubber skim stock comprises natural rubber or a blend of natural rubber and synthetic rubber, carbon black, an organo-cobalt compound, sulfur and a small amount of dithiodipropionic acid. The skim stock can be utilized in various applications where brass-plated steel reinforcement is desirable including tires, conveyor belts, hoses and the like.