Process for making diazo photosensitive paper

Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...

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430176, 430177, 430179, 430512, G03C 186, G03C 160

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042974283

ABSTRACT:
A process for making a diazo photosensitive paper which comprises adding a specified ultraviolet absorber to a photosensitive layer consisting of a diazonium salt and a coupler, adding the ultraviolet absorber to ethyl acetate to prepare a solution, dispersing said solution in an aqueous solution containing specified amounts of sulfosuccinate and polyvinyl alcohol, evaporating the ethyl acetate contained therein, mixing the thus-prepared liquid with a photosensitive liquid in a specified amount, and applying the photosensitive liquid containing the ultraviolet absorber to a paper substrate.

REFERENCES:
patent: 2657140 (1953-10-01), Kessels
patent: 3365293 (1968-01-01), Haefeli et al.
Kosar, J., "Light-Sensitive Systems", J. Wiley & Sons, 1965, pp. 292-296.

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