Light-sensitive mixture and copying material prepared therefrom,

Details Light-sensitive mixture and copying material prepared therefrom, Light-sensitive mixture and copying material prepared therefrom,

1981-10-20

1983-06-07

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430192, 430193, 430280, 430309, 430330, 430331, 430350, G03C 152, G03C 158

Patent

active

043871526

ABSTRACT:
A light-sensitive mixture is disclosed which contains a water-insoluble, aqueous-alkali-soluble binder, a light-sensitive o- or p-quinone-diazide or a mixture of (a) a compound which generates or splits off an acid on exposure to light and (b) a compound having at least one C--O--C group which can be cleaved by acid, and a phenol compound having 1 to 3 benzene nuclei which are mutually linked by single bonds, carbonyl groups, ether groups, thioether groups or optionally substituted methylene groups, and having at least one phenolic hydroxyl group and at least two substituents of the formula --CH.sub.2 OR, in which R is hydrogen or a lower alkyl or acyl group. The mixture is used for the preparation of light-sensitive copying material, preferably for the preparation of planographic printing forms. The addition of the phenolic compound has the effect that the developed printing forms can be baked at lower temperatures than hitherto in order to extend the printing run.

REFERENCES:
patent: 3130048 (1964-04-01), Fritz et al.
patent: 3779778 (1973-12-01), Smith et al.
patent: 4101323 (1978-07-01), Buhr et al.
patent: 4160671 (1979-07-01), Stahlhofen
patent: 4247611 (1981-01-01), Sander et al.
patent: 4265999 (1981-05-01), Schell

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