Uniroyal Chemical Company, Inc.

William R True

Edward L Wheeler

Franklin H Barrows

Rebecca F Seibert

Robert J Cornell

Darilyn Helen Roberts

This disclosure is directed to an antioxidant compound which reduces the rate at which insoluble sulfur converts to a migratable form of sulfur in an unvulcanized compound.

Rubber compounding formulation and method

This invention relates to the improvement of rubber-to-metal adhesion and adhesion retention in sulfur vulcanizable, metal reinforced rubber compositions via the use of substituted pyrimidine and triazine adhesion promoters of Structure (I). ##STR1## wherein A is N or C-H, X, Y and Z are independently selected from the group consisting of chloro, ##STR2## wherein R.sub.1 may be hydrogen, chloro, acyl, or C.sub.1 -C.sub.12 alkyl; R.sub.2 may be hydrogen, C.sub.1 -C.sub.12 alkyl, chloro, hydroxy, alkoxy, or anilino; R.sub.3 may be hydrogen, C.sub.1 -C.sub.4 alkyl or phenyl; R.sub.4 may be hydrogen, C.sub.1 -C.sub.8 alkyl, cyclohexyl, C.sub.1 -C.sub.12 hydroxylalkyl, or C.sub.1 -C.sub.12 alkoxyalkyl; R.sub.5 may be hydrogen, C.sub.1 -C.sub.4 alkyl, cyclohexyl, or C.sub.1 -C.sub.12 hydroxyalkyl; with the proviso that Z may not be chloro when both X and Y are chloro.

Substituted pyrimidines and substituted triazines as rubber-to-metal

This invention relates to the improvement of rubber-to-metal adhesion and adhesion retention in sulfur vulcanizable, metal reinforced rubber compositions via the use of certain phenylenediamino substituted chloropyrimidine and chlorotriazine adhesion promoters.

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Wolcott, CT, United States of America

William R True