| 摘要 |
A polyester having a good transparency and skid property is manufd. by esterification or transesterification of dicarbon acid (mainly terephthalic acid) or its alkylester and glycol (mainly ethylene glycol) followed by polycondensation with compd. I and II (M1=alkali metal such as K, Na or Ca-O-(CH2)nOH; n=1-6; M2=Ca, Zn, Mn, Co or Pb; R1-R6=H, C1-10 alkyl or phenyl) as a particle source or a stabilizing agent for surface activity of film. The amount of compds. I and II added to polyester is 0.02-0.50 mole% on the basis of acid composition, and the mole ratio of compd. I against compd. II is 1- 10.
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