Diazotype material that can be developed by applying a small amo

Details Diazotype material that can be developed by applying a small amo Diazotype material that can be developed by applying a small amo

1977-04-14

1978-12-05

Bowers, Charles L.

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 75, 96 91R, G03C 534, G03C 160

Patent

active

041284232

ABSTRACT:
Diazotype material which after imagewise exposure can be developed by applying onto its sensitized surface between 1.5 and 4.5 cm.sup.3 per square meter of developing solution, consists of a paper support, the same side of which is coated successively with a sealing layer containing as a filmforming binder polyvinylacetate or a copolymer of styrene with butadiene and a light-sensitive layer having a dry weight of at most 8 g per square meter and comprising a diazonium compound, polyvinyl alcohol with a degree of hydrolysis over 75% and starch particles, whereby the weight ratio polyvinyl alcohol to starch particles is 1 : 5 to 20. The light-sensitive layer may also comprise an azo-coupling component.

REFERENCES:
patent: 2780547 (1957-02-01), Ferzola et al.
patent: 3406943 (1969-08-01), Welch
patent: 3409434 (1968-11-01), Landberg et al.
patent: 3607271 (1971-09-01), Helder et al.
patent: 3627563 (1971-12-01), Bollon et al.
patent: 3658538 (1972-04-01), Hilhorst
patent: 3756823 (1973-09-01), Tor Haaf et al.
patent: 4043816 (1977-08-01), Bomers et al.
Chemical Abstracts, vol. 80, 1974, #151171j.

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