Colorless polyimides derived from 2R,5R,7S,10S-naphthanetetracarboxylic dianhydride

Abstract

Colorless polyimides with excellent thermal and mechanical properties were developed from 2<italic>R</italic>,5<italic>R</italic>,7<italic>S</italic>,10<italic>S</italic>-naphthanetetracarboxylic dianhydride, and their properties were systematically compared with those based on 1<italic>S</italic>,2<italic>R</italic>,4<italic>S</italic>,5<italic>R</italic>-cyclohexanetetracarboxylic dianhydride.