Brominated polyphenylmethanes, process for their preparation and

Details Brominated polyphenylmethanes, process for their preparation and Brominated polyphenylmethanes, process for their preparation and

1998-06-04

2000-05-16

Sanders, Kriellion

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524469, 528397, 570185, 570206, 570231, C08K 502, C08G 6100, C07C 2200

Patent

active

060638524

ABSTRACT:
Novel brominated polyphenylmethanes, such as poly(tetrabromobenzyl bromide), are provided in a one step process by reacting a benzyl halide and bromine in the presence of a Friedel Crafts catalyst. The brominated polyphenylmethanes can be added to flammable organic polymers to make flame retardant polymer compositions.

REFERENCES:
patent: 2477978 (1949-08-01), Graenacher et al.
patent: 2602823 (1952-07-01), Ross et al.
patent: 2830096 (1958-04-01), Lane

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