Light-sensitive mixture and light-sensitive recording...

Details Light-sensitive mixture and light-sensitive recording... Light-sensitive mixture and light-sensitive recording...

G - Physics

03

F

96/167

G03F 7/021 (2006.01) G03F 7/095 (2006.01)

Patent

CA 2009093

Abstract of the Disclosure 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°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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