| 摘要 |
<p>A process is described for producing shapable aromatic polyesters derived from 1,3-bis(p-carboxyphenoxy)propane (CPP) and a dihydric phenol comprising forming a mixed anhydride of CPP with a lower monocarboxylic acid containing at least 2 carbon atoms, e.g., acetic acid, and subsequently polymerizing said mixed anhydride with said dihydric phenol or a reactable diester of said dihydric phenol, to obtain said aromatic polyester. The process is capable of producing aromatic polyesters as described having a glass transition temperature of at least about 70 °C.</p> |
