Aqueous processable, multilayer, photoimageable permanent coatin

Details Aqueous processable, multilayer, photoimageable permanent coatin Aqueous processable, multilayer, photoimageable permanent coatin

1992-12-03

1994-02-22

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Stripping process or element

Element

430260, 430261, 430281, 430288, 430312, 430502, G03C 1805

Patent

active

052885895

ABSTRACT:
The use of a two layer photoimageable, aqueous processable, resist with an amphoteric binder in the layer laminated directly to a printed circuit board provides a permanent coating with improved adhesion throughout the lamination process while maintaining other desirable properties such as storage stability and circuit encapsulation.

REFERENCES:
patent: 4293635 (1981-10-01), Flint et al.
patent: 4349620 (1982-09-01), Cyr et al.
patent: 4352870 (1982-10-01), Howard et al.
patent: 4353978 (1982-10-01), Leberzammer et al.
patent: 4485167 (1984-11-01), Briney et al.
patent: 4698294 (1987-10-01), Lau et al.

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