Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
Patent
1980-03-26
1981-10-27
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...
430176, 430177, 430179, 430512, G03C 186, G03C 160
Patent
active
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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