Light-sensitive photopolymerizable and diazonium salt polyconden

Details Light-sensitive photopolymerizable and diazonium salt polyconden Light-sensitive photopolymerizable and diazonium salt polyconden

1990-02-01

1992-09-01

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...

430157, 430175, 430176, 430177, 430275, 430281, 430286, 430288, G03F 7021, G03F 7032, G03F 7033

Patent

active

051438135

ABSTRACT:
A light-sensitive mixture is described which contains a diazonium salt polycondensation product, a free-radical polymerizable compound having at least one terminal ethylenically unsaturated group and a boiling point at atmospheric pressure above 100.degree. C., a polymerization initiator which forms free radicals under the action of actinic radiation, and, as a first binder, a water-insoluble reaction product which is soluble in organic solvents and in aqueous alkaline solutions, which is a reaction product of an intramolecular anhydride of an organic polycarboxylic acid with a hydroxyl-containing synthetic polymer, and which has no further functional groups capable of reacting with acid anhydrides, and, as a further binder, an acid organic polymer having an acid number above 70, preferably a (meth)acrylic acid copolymer. The mixture is useful for producing planographic printing plates which give long print runs, and is notable for a long shelf life at elevated temperature.

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patent: 4851319 (1989-07-01), Walls et al.
patent: 5045429 (1991-09-01), Mack et al.

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