METHOD FOR PRODUCING TETRABROMOBISPHENOL A

摘要

PROBLEM TO BE SOLVED: To provide a method for effectively, efficiently and economically producing TBA useful for safety of life and structure and widely utilized all over the world as a flame-retardant for a synthetic resin. SOLUTION: A solution of tetrabromobisphenol A in methanol containing bromine, a reducing agent and water are separately and continuously supplied to a crystallization tank. Bromine is reduced and tetrabromobisphenol A are simultaneously crystallized.