PREPARATION OF POLYESTER ELASTOMER COMPOSITION

摘要

A polyester elastomer composition is prepd. by melt-mixing of : 1 Kg of polyester elastomer contg. 50-85 wt.% of 1.4- butylene units in terephthalic acid; 0.1-2.0 wt.% of linear epoxy cpd. of formula (I); 0.01-1.0 wt.% of dimeric acid matallic salt of formula (II); and 0.05-0.5 wt.% of amine based antioxidant. The polyester elastomer comprises dicarboxylic acid mainly contg. terephthalic acid; glycol mainly contg. 1.4-butane diol; polyalkylene glycol of 600-4000 Mw; and 0.3-1.0 equiv. of at least three valent alcohol w.r.t. 100 mole of terephthalic acid. In formulas, R1, R2= H, CH3 or C2H5; R3= C1-5 hydrocarbon (1< n <20); R= C20-45 hydrocarbon; M= Na or Mg; and R1 is not same with R2.