Tribromostyrene products and process for making them

Details Tribromostyrene products and process for making them Tribromostyrene products and process for making them

C - Chemistry, Metallurgy

07

C

C07C 25/28 (2006.01) C07C 17/12 (2006.01) C07C 17/25 (2006.01) C07C 17/34 (1990.01)

Patent

CA 2075093

-14- 1914/H/91 ABSTRACT TRIBROMOSTYRENE PRODUCTS AND PROCESS FOR MAKING THEM Tribromostyrene (TBS) is produced by the preparation of a TBS precursor, which is .beta.-bromoethyl-tribromobenzene (.beta.-BrBr3), and the successive elimination of hydrogen bromide from said precursor. The precursor is prepared by selective bromination of phenethyl bromide (.beta.-Br), wherein the molar ratio of bromine to phenethyl bromide is comprised between 2.5 and 3.5, and preferably between 3.1 and 3.3 included; and by adding bromine, after an initial addition, at a controlled molar rate.

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