Reduced methyl bromide process for making tetrabromobisphenol-A

Details Reduced methyl bromide process for making tetrabromobisphenol-A Reduced methyl bromide process for making tetrabromobisphenol-A

1994-09-08

1995-08-29

Lone, Werren B.

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

Organic compounds

Oxygen containing

568722, 568728, 568776, 568779, C07C 3762, C07C 3916

Patent

active

054462126

ABSTRACT:
A reduced methyl bromide process for making tetrabromobisphenol A in methanol, including: dissolving bisphenol-A in a methanol solvent to form a bisphenol-A methanol solution, adding bromine to the bisphenol-A methanol solution to brominate bisphenol-A and form tetrabromobisphenol A and hydrogen bromide, exposing the bisphenol-A methanol solution to an amount of a hydrogen peroxide agent to reduce the amount of methyl bromide co-product resulting from the bromination of bisphenol-A in methanol by reducing the amount of hydrogen bromide co-product available to react with the methanol, and collecting the resulting tetrabromobisphenol A product thus formed after the bromination is substantially complete.

REFERENCES:
patent: 5068463 (1991-11-01), Walter
patent: 5237112 (1993-08-01), LaRose

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