| 摘要 |
<p>Aromatic polyester copolymer compsn. contains (A) aromatic polyester copolymer which is obtd. from the mixt. of terephthalic acid and isophthalic acid mixt. (molar ratio 9:1-1:9) and bisphenol of formula (I), and (B) >0.01 wt.% on (A) of phosphoric acid deriv. of formula (II). In these formulae X is -O-, -S-, -SO2-, -CO-, alkylene or alkylidene; opt. contg. hydrocarbon gp., halogen atom or halohydrocarbon gp.; R1, R2, R3, R4, R'1, R'2, R'3, R'4 are hydrogen, halogen or hydrocarbon; R is 1-10C alkyl opt. substd. with halogen atom or hydrocarbon gp. The colouration and the thermo-decomposition of the polyester copolymers can be prevented. The prod. is highly stable.</p> |
