| 摘要 |
A copolyestercarbonate composition, comprising: a dihydric phenol, a carbonate precursor, and an aromatic dicarboxylic acid or derivative thereof selected from the group consisting of terephthalic acid and acid derivatives, and a mixture of isophthalic and terephthalic acids, and acid derivatives with the mole ratio of isophthalic to terephthalic of about 0.1:9.9 to about 3:7 said copolyestercarbonate containing from about 20 mole percent to about 50 mole percent ester content.
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