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US 5,393,820 AGranted
Flame retardant compounds and compositions containing them
AssigneeThe Associated Octel Company Limited
InventorsPaul Ashworth, Michael J. Schneider
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Abstract
Flame retardant polyesters are disclosed comprising esters of tribromoneopentyl alcohol with orthophthalic acid and its halogenated derivatives, particularly tetrabromo-orthophthalic acid an hydride.
Claims5
A haloneopentyl esters of the formula ##STR5## wherein X is Br;
- m has a value of 4;
- and
- each R is a 2,2-bis(bromomethyl)-3-bromo-n-propyl group.
A method of preparing flame retardant compounds which comprises reacting tribromoneopentyl alcohol with tetrabromo-orthophthalic acid anhydride in a mole ratio of about 2:1 thereby to produce bis-(tribromoneopentyl) tetrabromoorthophthalate.
Dependencies are inferred from the claim text.