The Chemistry of Vulcanization. VI. Action of the Zinc Salt of 2-Mercaptobenzothiazole on the Reaction of Diphenylmethane with Sulfur

Abstract

Abstract Literature on rubber vulcanization with thiazole type accelerators in the presence of zinc oxide indicates that the zinc salt of 2-mercaptobenzothiazole (ZMBT) is a transformation product of the benzothiazole accelerators. Therefore, it is important to investigate the behavior of this salt in the reacting mixture of sulfur and diphenylmethane (DPM), the latter having been utilized as a molecular model of rubber hydrocarbon in previous parts of this series. The reaction of DPM, sulfur and ZMBT in the absence of zinc oxide or zinc soap will now be reported. This is preliminary to the study of the mechanism of thiazole type accelerator action in the presence of zinc soap.