Silica-Filled Rubber Composition And Method For Making The Same
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United States of America Patent
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app pub date -
Jul 25, 2012
filing date -
Oct 24, 2011
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Abstract
Disclosed is a method of preparing a rubber composition comprising the steps of (a) blending in at least one preparatory mixing step at least one natural or synthetic rubbery polymer, a silica filler, a silica coupling agent, and at least one vulcanization accelerator; and (b) subsequently blending therewith in a final mixing step a sulfur curative, wherein the final mixing step is void of any vulcanization accelerator.
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