Copolyesters derived from ethoxylated 3,5-dibromo-4-...

Details Copolyesters derived from ethoxylated 3,5-dibromo-4-... Copolyesters derived from ethoxylated 3,5-dibromo-4-...

C - Chemistry, Metallurgy

08

G

402/191

C08G 63/66 (2006.01) C08G 63/68 (2006.01)

Patent

CA 1081896

ABSTRACT OF THE DISCLOSURE Flame retardant high molecular weight linear copolyesters are obtained from the condensation product of (a) an aliphatic or alicyclic diol having from 2 to 10 carbon atoms, (b) an aliphatic, alicyclic or aromatic dicarboxylic acid having from 4 to 12 carbon atoms or lower alkyl esters thereof, and (c) ethoxyl- ated brominated hydroxybenzoic acid of the formula Image where n and m are integers from 1 to 3, the ethoxylated brominated hydroxyben- zoic acid comprising 1 to 30% by weight of the copolyester composition. These copolyesters are capable of being formed into fibers and filaments and exhibit a high degree of thermal and ultraviolet stability.

271411

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