Photographic material containing oxazolinone-2 couplers

Details Photographic material containing oxazolinone-2 couplers Photographic material containing oxazolinone-2 couplers

1975-12-23

1977-11-22

Klein, David

Gas separation: apparatus

Electric field separation apparatus

And serially arranged nonelectrical separator

96 77, 97100R, G03C 700, G03C 140

Patent

active

040594475

ABSTRACT:
Monocyclic oxazolinone-2 structures make good 2-equivalent photographic couplers, the oxazolinone-2 ring splitting during the coupling to form a dye. The couplers can be made by condensing an .alpha.-halocarbonyl compound with an inorganic cyanate in a substantially aprotic solvent that can contain a small amount of water.

REFERENCES:
patent: 2846307 (1958-08-01), Woolley
patent: 3644498 (1972-02-01), Loria

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