Photographic material containing oxazolinone-2 couplers

US4059447A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Ernst Meier · Munich, DE
• Hans-Heinrich Credner
• Wolfgang Lassig · Munich, DE
• Karl Kuffner · Unterhaching, DE
• Karl-Wilhelm Schranz · Langenfeld, DE

Key dates

• Filing date: Dec 23, 1975
• Grant date: Nov 22, 1977
• Expiry date: Dec 23, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D263/38
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

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.