High temperature fluorinated polymer

Details High temperature fluorinated polymer High temperature fluorinated polymer

1986-05-27

1989-01-31

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528352, 528229, 528188, C08G 7310

Patent

active

048016829

ABSTRACT:
High temperature fluorinated polyimides having repeating polymer units comprising ##STR1## wherein X is diamine. Typically, these polyimides are the copolymerization product of about 3 mole % to about 42 mole % nadic esters; about 39 mole % to about 49 mole % diamine; and about 17 mole % to about 48 mole % 4,4'9(2,2,2-trifluoro-1-phenylethylidene)-bipthalic tetra carboxylic acid dialkylester. These polimides provide the high strength properties at high temperatures yet they can be processed into solid polymers, fibers, films and composites at low temperatures and pressures.

REFERENCES:
patent: 3310573 (1967-03-01), Coe
patent: 3356648 (1967-12-01), Rogers
patent: 3705870 (1972-12-01), Darmory et al.
patent: 4063984 (1977-12-01), Critchley
patent: 4307024 (1981-12-01), Kray et al.
patent: 4336175 (1982-06-01), Gibbs
patent: 4569988 (1986-02-01), Scola et al.
Paper Titled "Synthesis of Multifunctional Triarylfluoreithanes". 1. Condensation of Fluoro Ketones by William D. Kray and Robert W. Rosser; J. Org. Chem., vol. 42, No. 7, 1977, pp. 1186-1189.

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