Sulfur vulcanized rubber compounds containing maleamic acid
AssigneeThe Goodyear Tire & Rubber Company
InventorsJoel Muse, Paul H. Sandstrom, Lawson G. Wideman
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Abstract
The present invention relates to a sulfur vulcanized rubber composition containing 0.1 to 10.0 phr of an oligomeric maleimide of the formula: ##STR1## or a maleamic acid of the formula: ##STR2## wherein R and R.sup.1 are individually selected from the group of radicals consisting of hydrogen, an alkyl having 1 to 4 carbon atoms or a halogen; R.sup.2 is selected from the group of radicals consisting of 1 to 12 carbon atoms; X has a value of from 1 to 146 and n has a value of from 0 to 4. The presence of the maleimide oligomer or maleamic acid improve cord adhesion to the sulfur vulcanized rubber compound.
Claims5
A sulfur vulcanized rubber compound comprising a sulfur vulcanized rubber, from about 0.1 to about 10.0 phr of a maleamic acid of the formula:
- ##STR6## wherein R and R.sup.1 are individually selected from the group of radicals consisting of hydrogen, an alkyl having 1 to 4 carbon atoms or a halogen;
- R.sup.2 is selected from the group of radicals consisting of 1 to 12 carbon atoms and n has a value of from zero to 4.
Dependencies are inferred from the claim text.