Rubber composition comprised of cis-1,4-polyisoprene and 4,4′-(para or meta-phenylenedilsopropylidine) dianiline and articles, including tires, having at least one component comprised thereof
AssigneeThe Goodyear Tire & Rubber Company
InventorsLawson Gibson Wideman, Paul Harry Sandstrom, Sandra Jean Walters
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Abstract
This invention relates to rubber compositions comprised of cis-1,4-polyisoprene and a 4,4′-(para or meta-phenylenediisopropylidine) dianiline and to articles of manufacture having at least one component comprised thereof, including tires. The 4,4′-(phenylenediisopropylidine) dianiline acid has been observed to enhance green strength of such rubber composition.
Claims19
A rubber composition comprised of cis-1,4-polyisoprene and from about 0.1 to about 20 phr of at least one of 4,4′-(para-phenylenediisopropylidine) dianiline and 4,4′-(meta-phenylenediisopropylidine) dianiline, wherein said cis-1,4-polyisoprene is selected from at least one of natural and synthetic cis-1,4-polyisoprene rubber and wherein said rubber composition contains from about 35 to about 100 phr of particulate reinforcement therefor comprised of at least one rubber reinforcing carbon black and amorphous silica.
Dependencies are inferred from the claim text.