| 摘要 |
The polyester has good workability and polish. The polyester comprises: aromatic dibasic acid and its deriv. 55-100 mol%; C4-C12 aliphatic or aliphatic cyclic dibasic acid and its deriv. 0-45 mol%; glycol of formula (I) 0-20 mol%; C2- glycol 80-100 mol%; and triol 0-5wt.%. The above glycol of (I) is selected from 2-methyl-1,3-propanediol, 2-ethyl-1,3-propanediol, 2-n-propyl-1,3-propanediol, and 2-n-butyl-1,3-propanediol. The manufacturing method is conventional ester exchange method or direct esterification method.
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