Monomers for high temperature fluorinated polyimides

Details Monomers for high temperature fluorinated polyimides Monomers for high temperature fluorinated polyimides

1986-05-27

1989-09-05

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

560 14, 560 21, 560 57, 560 76, 560 83, 562 54, 562435, 562468, 562488, C07C 1516, C09B 1104

Patent

active

048636401

ABSTRACT:
Fluorinated aromatic hydrocarbons including fluorinated aromatic carboxylic acids fluorinated aromatic dianhydrides and fluorinated aromatic dialkyl esters that serve as precursor monomers for high temperature fluorinated polyimides. The fluorinated aromatic carboxylic acid monomer comprises: ##STR1## wherein X is hydrogen, carboxyl, sulfonic acid, hydroxy, alkyl, halogen or nitro and hydrates of said acids. The fluorinated aromatic dianhydride monomer comprises: ##STR2## wherein x is hydrogen, carboxyl, sulfonic acid, hydroxy, alkyl, halogen or nitro. The fluorinated aromatic dialkyl ester monomer comprises: ##STR3## wherein X is hydrogen, carboxyl, sulfonic acid, hydroxy, alkyl, halogen or nitro and Y is an alkyl group and hydrates of said esters.

REFERENCES:
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Paper titled "Synthesis of Multifunctional Triarylfluoreithanes, 1. Condensation of Fluoro Ketones" by William D. Kray and Rober W. Rosser; J. Org. Chem., vol. 42, No. 7, 1977, pp. 1186-1189.

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