Clay mineral products and their use in rubber compositions
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United States of America Patent
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May 22, 2012
Grant Date -
Oct 28, 2010
app pub date -
Mar 15, 2010
filing date -
Jul 18, 2001
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Abstract
Disclosed herein is a rubber composition comprising a rubber and particulate kaolin clay as a filler wherein: the kaolin particles have a particle size distribution such that at least about 95% of the particles, relative to the volume of the particles, have a particle diameter less than 3μm. The particulate kaolin particles may comprise calcined kaolin chosen from at least one of particulate soak calcined kaolin and particulate flash calcined kaolin. The rubber composition can comprise additional particulate fillers including those chosen from silica, carbon black, and other particulate fillers. Also disclosed herein is a process for producing such a composition, and the method of using a cured form of the composition in a rubber composition, such as a vehicle tire composition.
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