Rubber composition and method of making same
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United States of America Patent
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Apr 17, 2007
Grant Date -
Sep 30, 2004
app pub date -
Apr 7, 2004
filing date -
Nov 5, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Process of producing unvulcanized rubber useful for producing vulcanized rubber with improved hysteresis, which comprises mixing a composition comprising unvulcanized rubber, carbon black and xanthogen polysulfide at an elevated temperature in a non-productive stage and composition suitable for producing unvulcanized rubber useful for producing vulcanized rubber with improved hysteresis, which comprises unvulcanized rubber, a filler comprising carbon black and xanthogen polysulfide.
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