Light-sensitive mixture including an o- or p-quinone diazide...

Details Light-sensitive mixture including an o- or p-quinone diazide... Light-sensitive mixture including an o- or p-quinone diazide...

G - Physics

03

C

96/150

G03C 1/52 (2006.01) G03C 1/72 (2006.01) G03F 7/004 (2006.01) G03F 7/022 (2006.01)

Patent

CA 1151934

ABSTRACT OF THE DISCLOSURE A light-sensitive mixture is disclosed which contains a water-insoluble, aqueous-alkali-soluble binder, a light-sensitive o- or q-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 -CH2OR, in which R is hydrogen or a lower alkyl or acyl group. The mixture is used for the preparation of light-sensitive copying material, pre- ferably 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.

387589

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