Aqueous processable, multilayer, photoimageable permanent coatin

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

1992-12-22

1995-04-11

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Stripping process or element

Element

430258, 430262, 430263, 430288, 430312, 430910, G03C 1112, G03C 190, G03C 168

Patent

active

054057310

ABSTRACT:
The use of a two layer photoimageable, aqueous processable, resist with a hydrophic binder in the outermost layer provides a permanent coating highly resistant to printed circuit processing chemicals. This resistance results in levels of adsorbed or absorbed ionic contamination less than 14 micrograms per square inch.

REFERENCES:
patent: 3629036 (1971-12-01), Isaacson
patent: 4349620 (1982-09-01), Cyr et al.
patent: 4352870 (1982-10-01), Howard et al.
patent: 4506004 (1985-03-01), Sullivan et al.
patent: 4571374 (1986-02-01), Vikesland
patent: 4698294 (1987-10-01), Lau et al.
patent: 5248583 (1993-09-01), Lundquist et al.
patent: 5288589 (1994-02-01), McKeever et al.

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