Curing of polyamic acids or salts thereof by ultraviolet exposur

Details Curing of polyamic acids or salts thereof by ultraviolet exposur Curing of polyamic acids or salts thereof by ultraviolet exposur

1980-02-11

1982-05-25

Newsome, John H.

Coating processes

Electrical product produced

Welding electrode

528289, B05D 306

Patent

active

043317057

ABSTRACT:
A process for curing a film of polyamic acid or a salt thereof to the corresponding polyimide comprising exposing the film to ultraviolet radiation for a sufficient time and at a sufficient intensity to cure same. The film can be selectively exposed in an imagewise fashion through an appropriate mask followed by developing to remove unexposed areas.

REFERENCES:
patent: 3596125 (1971-07-01), Seigel
patent: 3733709 (1973-05-01), Bassemir et al.
patent: 3840448 (1974-10-01), Osborn et al.
patent: 4055769 (1977-10-01), Sander
patent: 4101424 (1978-07-01), Schooley et al.
patent: 4107174 (1978-08-01), Baumann et al.
patent: 4135098 (1979-01-01), Troue
patent: 4217389 (1980-08-01), Peterson

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