Melting point enhancement of partially brominated diphenyl oxide

Details Melting point enhancement of partially brominated diphenyl oxide Melting point enhancement of partially brominated diphenyl oxide

1989-08-01

1991-03-19

Stoll, Robert L.

Compositions

Fire retarding

Material physically quantified

252601, 252609, 568639, C09K 2108, C07C 4329

Patent

active

050008790

ABSTRACT:
This invention relates to a process for increasing the melting point of partially brominated diphenyl oxide mixtures having an average bromine content of 7.2 to 7.7. The process comprises: forming a slurry comprised of C.sub.1 -C.sub.4 alkanol and the mixture; maintaining the slurry until the melting point increase which is sought is obtained; and separating the so-treated mixture from the slurry.

REFERENCES:
patent: 3518316 (1970-06-01), Cumbo
patent: 3763248 (1973-10-01), Mitchell
patent: 3833674 (1974-09-01), Brackenridge
patent: 4214103 (1980-07-01), Garman et al.
patent: 4740629 (1988-04-01), Brackenridge
patent: 4835322 (1989-05-01), Mamuzic et al.

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