2,5-Bis(secondary amino) oxa- and thiadiazole photographic devel

Details 2,5-Bis(secondary amino) oxa- and thiadiazole photographic devel 2,5-Bis(secondary amino) oxa- and thiadiazole photographic devel

1976-11-11

1978-06-06

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 29R, 96 66R, 96 76R, 96 95, 2603068D, 260307G, G03C 530, C07D27738

Patent

active

040934624

ABSTRACT:
Oxa- and thiadiazole compounds substituted in the 2 and 5 positions with secondary amino groups are employed as photographic developing agents for exposed radiation-sensitive silver salts. The developing agents can be employed as components in developer compositions, as incorporated developing agents, and as developing agents in diffusion transfer processes.

REFERENCES:
patent: 2915395 (1959-12-01), Popeck et al.
patent: 3020155 (1962-02-01), Yackel et al.
patent: 3212892 (1965-10-01), VON Konig et al.
patent: 3306746 (1967-02-01), Schwarz
patent: 3314789 (1967-04-01), White et al.

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