Photographic silver halide color material containing fast-acting hardener and 2-pyrazolin-5-one coupler precursors

US4123281A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Marcel J. Monbaliu · Mortsel, BE
• Hans-Heinrich Credner
• Wolfgang Himmelmann · Leverkusen, DE
• Ernst Meier · Munich, DE
• Gaston J. Benoy · Edegem, BE
• Raphael K. Van Poucke · Berchem, BE
• Karl-Wilhelm Schranz · Langenfeld, DE
• George F. Van Veelen · Mortsel, BE

Key dates

• Filing date: Aug 17, 1976
• Grant date: Oct 31, 1978
• Expiry date: Aug 17, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/156
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Color photographic material containing a fast-acting hardener, which acts by activating carboxyl groups, wherein said material contains a 2-pyrazolin-5-one coupler precursor corresponding to one of the following general formulae I or II: ##STR1## wherein EACH OF R.sup.1, R and Y are substituents of the type used in 2-pyrazolin-5-one color couplers, and PA1 Z represents acyl, alkoxycarbonyl, aryloxycarbonyl, Or ##STR2## in which R.sup.1, R, and Y have the above-defined significance, and A represents an alkylene group or an arylene group.