Alkalline-solution-developable liquid photographic composition

Details Alkalline-solution-developable liquid photographic composition Alkalline-solution-developable liquid photographic composition

1990-08-10

1992-10-06

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

430285, 430287, 430906, 430909, 430910, 522117, 522121, 522 94, G03F 728, G03F 7033, G03F 7035

Patent

active

051531020

ABSTRACT:
An alkaline-solution-developable liquid image-producing composition useful as a permanent protective layer for printed circuit boards is disclosed comprising at least: (1) an acrylic copolymer with hyroxy group, carboxyl group and branched unsaturated carbon double bond. Its number average molecular weight is 3,000 to 10,000 and its acid value is at least 30 mg KOH/g; (2) a photo reactive monomer with hydroxy group, the number of the unsaturated carbon double bond functional groups should be not less than 2; (3) a melamine compound; and (4) a free radical photo initiator.

REFERENCES:
patent: 3899611 (1975-08-01), Hall
patent: 4140605 (1979-02-01), Sano et al.
patent: 4438189 (1984-03-01), Geissler et al.
patent: 4572887 (1986-02-01), Geissler
patent: 4587199 (1986-05-01), Bennett
patent: 4806450 (1989-02-01), Hofmann et al.
patent: 4920037 (1990-04-01), Takahashi et al.

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