| abstract |
Flame-resistant aromatic polyester resin compsn. is composed of (A) 60-99.5 wt. % aromatic copolyester prepd. from (i) acid component consisting of 9-1 mol. part of terephthalic acid (or functional deriv. thereof) and 1-9 mol parts isophthalic acid (or functional deriv. thereof) and (ii) bisphenol of formula (I) and (B) 40-0.5 wt. % of decabromo diphenyl ethel. In (I), -X- is -O-, -S-, -SO2-, -CO-, alkylene or alkylidene; and each or R1, R2, R3, R4, R'1, R'2, R'3 and R'4 is H or hydrocarbon. (B) improves flame resistant without affecting thermal resistance of the resin. |