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Synthesis of Fully Aliphatic Polyimides

Takeshi Sasaki

Department of Human Sensing and Functional Sensor Engineering, Graduate School of Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japan

Amane Mochizuki

Core Technology Center, Nitto Denko Co Ltd, Ibaraki, Osaka 567-8680, Japan

Mitsuru Ueda

Department of Human Sensing and Functional Sensor Engineering, Graduate School of Engineering, Yamagata University, Yonezawa, Yamagata 992-8510, Japantc012{at}dip.yz.yamagata-u.ac.jp

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.

High Performance Polymers, Vol. 11, No. 3, 255-262 (1999)
DOI: 10.1088/0954-0083/11/3/301


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