Positive-working recording material containing aluminum base and

Details Positive-working recording material containing aluminum base and Positive-working recording material containing aluminum base and

1996-07-03

1998-05-19

Young, Christopher G.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430191, 4302781, G03F 7023

Patent

active

057534055

ABSTRACT:
A positive-working recording material is disclosed that has an aluminum base and a mat-finished radiation-sensitive layer that contains a 1,2-naphthoquinone-2-diazide as radiation-sensitive compound and a binder which is insoluble in water but soluble or swellable in aqueous alkali. The radiation-sensitive 1,2-naphthoquinone-2-diazide is an ester of 1,2-naphthoquinone-2-diazide-4- or -5-sulfonic acid and a phenolic compound that contains at least 2, preferably at least 3, phenolic hydroxyl groups, which ester has a phenolic hydroxyl group content of at least 0.5 mmol/g and a diazo unit content of at least 1.5 mmol/g. The binder is a phenol/formaldehyde novolak that contains at least 5 mmol/g phenolic hydroxyl groups, the phenol component of which contains at least 30 mol percent m-cresol and at least 10 mol percent of at least one xylenol and which has a weight-average M.sub.w of 2,000 to 12,000 (determined by means of GPC with polystyrene as standard). The radiation-sensitive layer additionally contains at least one phenolic additive which has a molecular weight M.sub.w of not more than 600 and contains 2 to 4 uncondensed phenyl nuclei and at least 6 mmol/g phenolic hydroxyl groups.

REFERENCES:
patent: 4871645 (1989-10-01), Uenishi et al.
patent: 4988601 (1991-01-01), Ushirogouchi
patent: 5089373 (1992-02-01), Uenishi et al.
patent: 5215856 (1993-06-01), Jayaraman
patent: 5225310 (1993-07-01), Stahlhofen et al.

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