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Synthesis and properties of new polyimides containing flourinated alkoxy side chains

✍ Scribed by T. Ichino; S. Sasaki; T. Matsuura; S. Nishi

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
416 KB
Volume
28
Category
Article
ISSN
0887-624X

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✦ Synopsis

Abstract

A series of new polyimides containing fluorinated alkoxy side chains are prepared from novel fluorinated alkoxy diamines. The dieletric constant at 1 kHz in the fluorinated polyimides decreases from 3.3 to 2.6 as fluorine content increases. The refractive index also changes from 1.58 to 1.48, dependent on the fluorine content. In addition, the fluorinated polyimides exhibit lower water absorption than the reference polyimides prepared from m‐phenylenediamine.

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A series of new fluorine-containing polyimides have been synthesized from the condensation of 2,2-bis[4-(4-aminophenoxy)phenyl]propane, 2,2-bis[4-(4-aminophenoxy)phenyl] -1,1,1,3,3,3 -hexafluoropropane, or 2,2 -bis[4 -(4 -amino -2 -trifluoromethylphenoxy)phenyl]-1,1,1,3,3,3-hexafluoropropane with va