Rubber compositions containing a vulcanization system...

Details Rubber compositions containing a vulcanization system... Rubber compositions containing a vulcanization system...

C - Chemistry, Metallurgy

08

K

402/332, 400/912

C08K 5/51 (2006.01) C07F 9/165 (2006.01) C08K 5/5398 (2006.01)

Patent

CA 1222343

ABSTRACT OF THE DISCLOSURE Compositions of vulcanizeable diene rubber, a cross-linking agent, a vulcanization accelerator and a vulcanization, system alterative are disclosed, which have improved properties of scorch delay, cure rate and reversion rrsistance. The alterative is a compound of the formula Image where R1 and R2 are the same or different radicals selected from alkyl of 1-12 carbon atoms, phenyl, cycloalkyl of 3-8 carbon atoms and alkyaryl and aralkyl of 7-12 carbon atoms, and R3 is selected from the same as R1 and R2, optionally substituted with one or more halogen, nitro, alkoxy, carboalkoxy, acyl, acyloxy, amido, cyano, thio or sulfonyl substituents.

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