Positive-working photosensitive mixture and recording material o

Details Positive-working photosensitive mixture and recording material o Positive-working photosensitive mixture and recording material o

1989-03-29

1990-11-20

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430191, 430192, 430193, 430326, 430330, G03C 160, G03F 7023

Patent

active

049718878

ABSTRACT:
A positive-working photosensitive mixture is disclosed, which comprises an o-quinonediazide as the photosensitive compound and a novolak resin, which is insoluble in water and soluble in aqueous-alkaline media, as a binder, said novolak resin being prepared by condensation of a mixture comprising m-cresol and 2,3,6-trialkylphenol with a carbonyl component, preferably in a solvent. The photosensitive mixture containing the above-described binder is distinguished by high thermal stability and by a low dark erosion rate when developed with a metal ion-free developer.

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