Polyamide acid, process for producing same and polyimide obtaine

Details Polyamide acid, process for producing same and polyimide obtaine Polyamide acid, process for producing same and polyimide obtaine

1982-12-15

1984-06-12

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528184, 528352, 528353, C08G 7310

Patent

active

044543107

ABSTRACT:
Polyamide acid obtained by reacting 2,3,5-tricarboxycyclopentane-acetic acid and a diamine in a solvent has a high stability in the form of a solution, has a high workability and is excellent in storage stability. Polyimide obtained by heating said polyamide acid is excellent in heat resistance, mechanical properties, electrical properties and chemical resistance.

REFERENCES:
patent: 3778411 (1973-12-01), Emerick et al.
patent: 3861956 (1975-01-01), Schwarcz
patent: 3981847 (1976-09-01), Meyer et al.
patent: 4271288 (1981-06-01), Woo
patent: 4358579 (1982-11-01), Nimry et al.

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