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US 5,961,755 AGranted
Rubber compositions containing a disodium salt of 2,2'-dithiosalicyclic acid
AssigneeThe Goodyear Tire & Rubber Company
InventorsPaul Harry Sandstrom, Lawson Gibson Wideman
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Abstract
The present invention relates to rubber compositions containing a disodium salt of 2,2'-dithiosalicyclic acid of the formula: ##STR1##
Claims9
A sulfur vulcanizable rubber composition comprising an elastomer containing olefinic unsaturation and a disodium salt of 2,2'-dithiosalicyclic acid of the formula:
- ##STR8## and a sulfur containing organosilicon compound is present and is of the formula:
- Z-Alk-S.sub.n -Alk-Z II
- in which Z is selected from the group consisting of ##STR9## where R.sup.1 is an alkyl group of 1 or 4 carbon atoms, cyclohexyl or phenyl;
- R.sup.2 is alkoxy of 1 to 8 carbon atoms, or cycloalkoxy of 5 to 8 carbon atoms;
- Alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is an integer of 2 to 8.
2 more elements
A sulfur-vulcanized rubber composition comprising a tire, belt or hose and prepared by heating an elastomer containing olefinic unsaturation and a disodium salt of 2,2'-dithiosalicyclic acid of the formula:
- ##STR10## to a temperature ranging from 100.degree. C. to 200.degree. C. in the presence of a sulfur-vulcanizing agent.
Dependencies are inferred from the claim text.