Subsulfonamide accelerators are the fastest-growing accelerators at present. The length of scorch time and the speed of vulcanization of sub-sulfonamide accelerators depend on the nature of the amine in the accelerator molecule. The stronger the alkalinity of the amine, the faster the vulcanization speed; the greater the spatial obstruction of the amine, the longer the scorching time, and the sulfur speed decreases.

It is a kind of late-acting accelerator derived from 2-mercaptobenzothiazole (accelerator M) as the parent. Compared with thiazole accelerators, the cooking time is long, the processing safety is high, and the physical and mechanical properties of vulcanized rubber and ageing resistance are outstanding, so it is one of the types of rubber accelerators with the largest production and consumption, the most varieties and the widest application. The main varieties include N-tert-butyl-2-benzothiazole subsulfonamide (NS), N-cyclohexyl-2-benzothiazole subsulfonamide (CZ), N, N; dicyclohexyl-2-benzothiazole subsulfonamide (DZ), N-oxydiethylidene-2-benzothiazole subsulfonamide (NOBS) and N-oxydiethylidene-thiocarbamoyl-N´-oxydiethylidene-subsulfonamide (OTOS), etc.