Light-sensitive mixture based on o- naphthoquinonediazides,...

G - Physics – 03 – C

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96/165, 260/396.

G03C 1/54 (2006.01) G03F 7/022 (2006.01)

Patent

CA 1213600

Abstract of the Disclosure A light-sensitive mixture is described, which is specially intended for the production of planographic printing plates and which contains, as the light-sensitive compound, a naphthoqui- nonediazide sulfonic acid ester of the general formula I Image in which D is the 1, 2-naphthoquinone-2-diazide-5-sulfonyl radi- cal or the 1, 2-naphthoquinone-2-diazide-4-sulfonyl radical, preferably the 1,2-naphthoquinone-2-diazide-5-sulfonyl radical, R and R' are hydrogen atoms, alkyl groups having 1 to 4 carbon atoms or radicals of the formula DO, and n denotes an integer from 6 to 18, preferably from 8 to 14. The new compounds are distinguished by good solubility and produce layers which have a high resistance to alkaline developer solutions and to damping solution containing alcohol.

404463

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