Patent · US Expired

Photosensitive multi-layer material and preparation of adhesive layers employed therein

US4387157A · kind A · utility

10Cited by

0References

6Claims

0Family size

Assignee

BASF SE

Inventors

Bernd Bronstert · Otterstadt, DE
Herbert Hahn · Marietta, US
Gerhard Hoffmann · Otterstadt, DE
Werner Lenz · Bad Dürkheim, DE

Key dates

Filing date	Nov 23, 1981
Grant date	Jun 7, 1983
Priority date	—
Expiry date	Nov 23, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/107
WIPO fieldOptics
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.