Delac NS N-t-butyl-2-benzothiazole sulfenamide Crompton-Uniroyal Chemical Catalysts / Accelerators / Vulcanizing agents >> Mercapto compounds >> Mercaptobenzothiazole (Thiazole) Rubber - Elastomer (Chloroprene, Butyl …) DELAC ® NS Delayed Action Accelerator N-t-butyl-2-benzothiazole sulfenamide Very safe at processing temperatures, but still produces high modulus compounds at curing temperatures. Nonstaining and nondiscoloring to rubber compounds and materials in contact with them. Tire treads, carcass, sidewall, mechanical goods and wire jackets. Nonstaining and nondiscoloring N-t-butyl-2-benzothiazole sulfenamide. Used as a delayed action accelerator in rubber compounds. Offers good safety at processing temperatures. Produces high modulus compounds at curing temperatures.