Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Photomechanical dye image prepared
Patent
1977-11-01
1980-02-19
Bowers, Charles L.
Radiation imagery chemistry: process, composition, or product th
Diazo reproduction, process, composition, or product
Photomechanical dye image prepared
430192, 430270, 430277, 430278, 430302, 525 6, 525504, G03C 154, G03C 170, G03F 700, G03F 708
Patent
active
041893204
ABSTRACT:
A light-sensitive coating composition and a light-sensitive photomechanical structure, such as a printing plate or a photoresist is produced by coating a suitable planar substrate with a condensation product of an organic isocyanate and a polymeric resin having functional groups reactive with the isocyanate, such as a phenol-formaldehyde resin, and a light-sensitive diazo compound, such as the esters and amides of quinone diazides, the coating being softenable by exposure to light and subsequent treatment with a conventional liquid printing plate developer, such as an aqueous alkaline solution and/or an organic solvent.
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American Hoechst Corporation
Bowers Charles L.
Bryan James E.
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