Brominated biphenols

Details Brominated biphenols Brominated biphenols

1975-08-18

1976-05-11

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260396R, 260619R, C07C 3700, C07C 3712

Patent

active

039564037

ABSTRACT:
Bromobiphenols containing at least two bromine atoms meta to the phenolic hydroxyl groups can be produced from 3,3',5,5'-tetra-substituted diphenoquinones by reacting the latter with bromine. The reaction can be controlled to produce little, if any, by-product. The products obtained are dependent to some extent on the substituents in the four positions ortho to the hydroxyl groups. The biphenols can be used as antioxidants or as starting materials for preparation of flame-retardent polymeric compositions useful in the molding, coating and insulating arts.

REFERENCES:
patent: 3306875 (1967-02-01), Hay
patent: 3491128 (1970-01-01), Dewhurst
patent: 3720721 (1973-03-01), Becker et al.
patent: 3894094 (1975-07-01), Rultedge
Auwer, "Ber.", 38, 226, (1905).

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