Photosensitive multi-layer material and preparation of adhesive layers employed therein
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United States of America Patent
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-
Jun 7, 1983
Grant Date -
N/A
app pub date -
Nov 23, 1981
filing date -
Dec 3, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A photosensitive multi-layer material comprising a base and a photosensitive layer which has a polyamide binder and is soluble or dispersible in an alcoholic solvent contains two layers between the base and the photosensitive layer, namely (a) an adhesion-promoting layer, adjacent to the base, which is derived from a polyurethane binder, prepared by reacting a hydroxyl-containing epoxy resin and a polyisocyanate, and a pigment combination in which a white zinc sulfide pigment is the essential constituent, and (b) an adhesive layer, adjacent to the photosensitive layer, which consists of a baked mixture of an alcohol-soluble copolyamide and a melamine-formaldehyde resin.
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