PROCESS FOR PREPARING 2-MERCAPTOBENZTHIAZOLE-BASED VULCANIZATION ACCELERATOR Russian patent published in 1994 - IPC

FIELD: as a rubber vulcanization accelerator. SUBSTANCE: the product: the 2-mercaptobenzthiazole-based vulcanization accelerator is a cream yellow powder having a moisture content of maximum 1%. Reagent 1: 2-mercaptobenzthiazole. Reagent 2: sodium nitrite. Reagent 3: sodium or potassium sulfate. Reaction conditions: at a molar ratio of reagent 1 to reagent 2 to reagent 3 of at least 1:0.1:0.1 in the solid phase in a capacity apparatus fitted with a stirring device at an air pressure of at least 1 atm gauge or in an impact-attrition action apparatus. EFFECT: improved properties of the vulcanization accelerator. 2 tbl