Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
Patent
1988-04-04
1989-12-26
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Composition or product which contains radiation sensitive...
430165, 430192, 430270, 430906, G03C 160, G03C 1495
Patent
active
048897892
ABSTRACT:
A photosensitive composition which substantially comprises a binder which is insoluble in water and soluble in aqueous-alkaline solutions, a photosensitive 1,2-naphthoquinone-diazide or a photosensitive mixture comprised of a compound which splits off acid upon exposure to light and a compound containing at least one acid-cleavable C-O-C group, and a thermally crosslinking compound comprising a urea or urethane-formaldehyde condensation product is disclosed. Also disclosed is a copying material prepared from this composition. The material has a good shelf life and can be processed as a positive or negative-working material, and also according to the photocomposing method. For development customary developer solutions are used.
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Bowers Jr. Charles L.
Hoechst Aktiengsellschaft
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