Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified backing or protective layer containing
Patent
1982-06-23
1984-01-24
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified backing or protective layer containing
148 627, 204 17, 204 35R, 204 35N, 204 38E, 204 58, 4273881, 427409, 430 49, 430 60, 430158, 430160, 430166, 430167, 430276, 430278, 430264, 430302, 430526, C23C 108, G03C 194, B41N 108
Patent
active
044277660
ABSTRACT:
The plate-, foil- or strip-shape support materials for offset printing plates are based on chemically, mechanically and/or electromechanically roughened aluminum, or on one of its alloys. Optionally, the aluminum may also have an aluminum oxide layer produced by anodic oxidation. One of the two surfaces of the support material has a hydrophilic coating of at least one salt-type hydrophilic organic polymer which is a complex-type product obtained by reacting (a) a water-soluble organic polymer having carboxylate substituents, carboxylic acid amide substituents and/or carboxylic acid imide substituents as functional groups, with (b) a salt of an at least divalent metal cation, and wherein the quantity of complex-type reaction product is less than about 0.1 mg per dm.sup.2 of support material surface.
In a process for manufacturing this support material, the complex-type reaction product, dissolved in an aqueous acid, is applied to at least one surface of the support material and the support material thus modified is dried. It is also possible, however, to produce the complex-type reaction product of the components (a) and (b) on the support material. The support material is used in the preparation of offset printing plates having a light-sensitive layer.
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Chemical Abstracts, vol. 93, 1980, #58253w (Bergehaeuser et al.).
Bowers Jr. Charles L.
Hoechst Aktiengesellschaft
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