Affiliation:
1. Department of Human Sensing and Functional Sensor Engineering, Graduate School of Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
2. Core Technology Center, Nitto Denko Co Ltd, Ibaraki, Osaka 567-8680, Japan
Abstract
Fully aliphatic polyimides (APIs) have been synthesized. APIs were prepared by poly(addition-condensation) of the alicyclic dianhydride bicyclo[2.2.2]octane-2, 3, 5, 6-tetra-carboxylic 2, 3:5, 6-dianhydride with the aliphatic diamine 5-amino-1, 3, 3-trimethylcyclo-hexanemethylamine, the mixture of 2, 5- and 2, 6-bis(aminomethyl)bicyclo[2.2.1]heptane or 1, 4-cyclohexanebis(methylamine) in m-cresol at high temperature. The polymerization proceeded smoothly at 200 °C and produced APIs with inherent viscosities up to 0.48 dl g−1. The APIs were soluble in a wide range of polar solvents and showed high thermal stability and excellent transparency.
Subject
Materials Chemistry,Organic Chemistry,Polymers and Plastics
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