Process for producing developers for silver halide image patterns
Abstract
Abstract A NOVEL PROCESS FOR PRODUCING COMPOUNDS ESPECIALLY USEFUL AS DEVELOPERS FOR SILVER HALIDE IMAGE PATTERNS. ESSENTIALLY, THE PROCESS OF THE INVENTION INVOLVES THE SAPONIFICATION OF A COMPOUND OF THE FOLLOWING FORMULA: 1,4-DI(R-COO-),2-((2-(O=),R1-CYCLOPENTYL)-CO-C(-R1)2- C(-R1)2-),R1-BENZENE IN A NON-AQUEOUS ALKALINE MEDIUM FOLLOWED BY ACIDIFICATION TO PROVIDE A COMPOUND CONFORMING TO THE FOLLOWING FORMULA: 2-((2-(O=),R1-CYCLOPENTYL)-CO-C(-R1)2-C(-R1)2-),R1- HYDROQUINONE WHEREIN THE -OCOR GROUPS AT THE ORTHO AND PARA POSITIONS OF THE PHENYL RING REPRESENT GROUPS THAT CAN BE SUBSTITUTED WITH OR CONVERTED TO HYDROGEN SO AS TO PROVIDE HYDROXY MOIETIES IN THE ORTHO AND PARA POSITIONS AND R1 REPRESENTS A SUBSTITUTENT WHICH CAN BE THE SAME OR DIFFERENT AND WHICH DOES NOT AFFECT THE FUNCTIONALITY OF THE COMPOUND AS A SILVER HALIDE DEVELOPING AGENT.
Inventors
- 👤 H Bader
- 👤 M Feingold
- 👤 E Jahngen
Bibliographic Details
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