Photoimagable solder mask coating

Details Photoimagable solder mask coating Photoimagable solder mask coating

1989-06-13

1992-02-18

Hamilton, Cynthia

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430910, 522 95, 522 96, 522 92, 522 97, G03F 7028, G03F 7033

Patent

active

050893769

ABSTRACT:
A UV sensitive coating composition is described which uses a polymer prepared from a condensation reaction of a diisocyanate, a hydroxy alkyl (di or tri) (meth)acrylate and a carboxylic acid polyol. Optionally, a polyol and/or a dicarboxylic acid polyol can also be included as reactants. The coating polymer, thus prepared, is combined with binders and crosslinkers to form a solder mask.

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patent: 4476215 (1984-10-01), Kausch
patent: 4499163 (1985-02-01), Ishimaru et al.
patent: 4717740 (1988-01-01), Hung et al.

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