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Rubber composition and tire with component(s) thereof

  • US 5,021,493 A
  • Filed: 03/21/1990
  • Issued: 06/04/1991
  • Est. Priority Date: 03/21/1990
  • Status: Expired due to Term
First Claim
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1. A sulfur curable rubber composition which is comprised of at least one of natural rubber and synthetic rubber and is characterized by containing, based on 100 parts by weight of said rubber, from about 0.5 to about 5 parts by weight of 2,5-diorganohydroquinone having the structure:

  • ##STR2## where R1 and R2 are the same or different hydrocarbon radicals containing from 1 to 20 carbon atoms selected from saturated alkyl and cycloalkyl radicals containing 3 to 20 carbon atoms and from aryl and hydrocarbon substituted aryl radicals (alkaryl radicals) and aralkyl radicals containing from 6 to 20 carbon atoms;

    wherein said rubber composition is prepared by mixing essentially all of the 2,5-diorganohydroquinone in the absence of sulfur and vulcanization accelerators in a first, nonproductive, stage, of a multiple stage rubber mixing process.

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