N,N'-bisimidothio-diamines
AssigneeThe Goodyear Tire & Rubber Company
InventorJohn P. Lawrence
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Abstract
Imides such as N-(morpholinothio)phthalimide are used to affect the vulcanization characteristics of sulfur vulcanizable polymers by increasing the state of vulcanization and/or improving scorch resistance and/or increasing the rate of vulcanization.
Claims2
An imide of the formula ##EQU7## wherein R is selected from the group consisting of 4,5-cyclohexenylene, orthophenylene, ethylene and 1,3-propylene, and A is selected from the group consisting of divalent radicals derived from piperazine, 2,5-dimethylpiperazine, imidazolidine, hexahydropyrimidine, homopiperazine, N,N'-dimethylethylenediamine, N,N'-dimethyl-1,3-propylenediamine, N,N'-dimethyl-1,6-hexamethylenediamine, N,N'-dimethyl-1,4-cyclohexylenedia mine, and N,N'-dimethyl-p-phenylenediamine.
Dependencies are inferred from the claim text.