Process for the preparation of tetrabromobisphenol-A

Details Process for the preparation of tetrabromobisphenol-A Process for the preparation of tetrabromobisphenol-A

1998-06-11

2000-07-04

Kumar, Shailendra

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568722, 568723, 568727, 568779, 568776, 568726, C07C 3768

Patent

active

060841362

ABSTRACT:
This invention relates to a process for the production of tetrabromobisphenol-A by the bromination of bisphenol-A, which process features: (a) feeding to a reaction mass (i) bisphenol-A and (ii) a stream of gaseous bromine, the gaseous stream having a Reynold's No. .gtoreq.40,000; (b) the reaction mass containing from about 50 to about 20,000 ppm unreacted bromine and less than 20 wt % HBr; and (c) the reaction mass having precipitated therefrom tetrabromobisphenol-A, all of (a)(ii), (b) and (c) occurring during the bisphenol-A feed.

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