Patent ID: 6482884
Filing Date: 2002-11-19
Classification: B60C,C08K,C08L

Abstract:
A process for improving the processability, storage stability and/or cure rate of an uncured silica reinforced rubber composition where silica comprises the major filler in said reinforced rubber composition, 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 (5 moles) dehydroabietylamine in admixture with dehydroabietylamine, ethoxylated (11 moles) dehydroabietylamine in admixture with dehydroabietylamine, or an ester diol, and combinations thereof.