Diazotype materials with hydroxypropyl cellulose ether as anti-s

Details Diazotype materials with hydroxypropyl cellulose ether as anti-s Diazotype materials with hydroxypropyl cellulose ether as anti-s

1973-11-01

1978-05-09

Bowers, Jr., Charles L.

Gas separation: apparatus

Electric field separation apparatus

Plural diverse electric fields

96 49, 96 91R, 96 87R, G03C 160, G03C 180

Patent

active

040884929

ABSTRACT:
Modifying the surface of a diazotype material by incorporating hydroxyalkyl cellulose ether into the diazotype sensitizing coating composition or coating the assembly with it so as to roughen the surface of the material thereby enabling nitrogen, which is liberated when the material is exposed to light, to escape from between the master and the diazotype material to prevent nitrogen accumulating between the two and hence avoiding slippage of one relative to the other.

REFERENCES:
patent: 2474700 (1949-06-01), Slifkin
patent: 2873207 (1959-02-01), Weegar et al.
patent: 3536490 (1970-10-01), Hochberg
patent: 3679419 (1972-07-01), Gillich

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