Patent ID: 6608145
Filing Date: 2003-08-19
Classification: C08K

Abstract:
A sulfur-vulcanized elastomeric compound produced by a process comprising the steps of:(a) mixing together at a temperature of 165Â° C. to about 200Â° C. in the absence of cure agents, an elastomer optionally having an alkoxysilane terminal group, a reinforcing filler comprising silica or a mixture thereof with carbon black, about 0.01% to about 1% by weight, based on the weight of the silica, of a bis(trikoxysilylorgano) tetrasulfide silica coupling agent, and a silica dispersing aid; (b) allowing the mixture to cool below the mixing temperature; (c) mixing the mixture obtained in step (b), at a temperature lower than a vulcanization temperature, with a cure agent comprising an effective amount of sulfur to achieve a satisfactory cure; and (d) curing the mixture obtained in step (c).