Curing of polyamic acids or salts thereof by ultraviolet...

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

C - Chemistry, Metallurgy

08

J

204/91.79

C08J 3/28 (2006.01) G03F 7/038 (2006.01)

Patent

CA 1137441

CURING OF POLYAMIC ACIDS OR SALTS THEREOF BY ULTRAVIOLET EXPOSURE Abstract A process for curing a film of polyamic acid or a salt thereof to the corresponding polyimide in the absence of externally applied heat 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.

351615

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