Patent ID: 6737466
Filing Date: 2004-05-18
Classification: B60C,C08K,C08L

Abstract:
A product having improved processability, storage stability and/or cure rate which is an uncured silica reinforced rubber composition where silica comprises the major filler in said reinforced rubber composition, said product produced by the process comprising combining a mixture comprising rubber, silica and at least one organic compound of relatively low molecular weight comprising, an abietyl compound, or an ester hydroxyl organic compound containing at least one hydroxyl group, at least one ester group, and optionally an ether group, where the molecular weight of said organic compound of relatively low molecular weight is less than about 7,000, wherein said organic compound is ethoxylated dehydroabietylamine comprising 5 moles of ethylene oxide in admixture with dehydroabietylamine, ethoxylated dehydroabietylamine comprising 11 moles of ethylene oxide in admixture with dehydroabietylamine, or an ester diol and combinations thereof optionally containing a rubber cross-linking system or curing system.