Quinone methide photograhpic reagent precursors

Details Quinone methide photograhpic reagent precursors Quinone methide photograhpic reagent precursors

1974-05-03

1976-11-23

Waddell, Frederick E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D25704

Patent

active

039936619

ABSTRACT:
Novel compounds are disclosed which release a photographic reagent in the presence of alkali and are therefore useful in photographic products and processes. The compounds may be defined as quinone- or naphthoquinonemethide precursors containing a mercapto-azole or azine photographic reagent moiety.

REFERENCES:
patent: 3337576 (1967-08-01), Buchanan et al.
patent: 3639417 (1972-02-01), Porter et al.

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