Clear aquagel polyimide film

Details Clear aquagel polyimide film Clear aquagel polyimide film

1982-07-06

1984-01-17

Lee, Lester L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

4284735, 528353, C08L 7908

Patent

active

044264860

ABSTRACT:
Polyimide film is manufactured by solvent casting onto a film-supporting surface. A solution of polyimide resin is dissolved in hot organic solvent to provide a casting dope. The film is coagulated by contacting an aqueous medium, substantially replacing the organic solvent in the film with water. Orienting the water-containing film and drying the oriented film to remove water produces a substantially homogeneous polyimide film having high electrical resistance, flexibility and strength.

REFERENCES:
patent: 3247165 (1966-04-01), Rodia
patent: 3619461 (1971-11-01), Gay
patent: 3862897 (1975-01-01), Gattus
patent: 3867500 (1975-02-01), Traynor
patent: 3899309 (1975-08-01), Hoehn et al.
patent: 4272467 (1981-06-01), Johnson

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