G - Physics – 03 – C
Patent
G - Physics
03
C
96/100, 96/35
G03C 1/40 (2006.01) C07C 45/46 (2006.01) C07C 45/51 (2006.01) C07C 45/62 (2006.01) C07C 45/67 (2006.01) C07C 45/71 (2006.01) C07C 46/00 (2006.01) C07C 47/565 (2006.01) C07C 49/825 (2006.01) C07C 50/34 (2006.01) C07C 50/38 (2006.01) C07D 231/46 (2006.01) G03C 8/22 (2006.01)
Patent
CA 1134192
- 1 - Abstract Photographic silver halide material for use in diffusion transfer photography and method using such material. Said material contains a quinone-type compound which corresponds to one of the formulae (A) or (B) and which is capable in reduced state and under alkaline conditions of releasing a photographically useful group e.g. a dye : Image (A) Image (B) wherein : each of (Nuox)1 and (Nuox)2 represents an oxidized nucleo- philic group, Z represents a bivalent atomic group which is electro- negative, Q together with the Z group represents a releasable photographically useful group, each of R1, R2 and R3 is hydrogen, halogen, alkyl, alkoxy, GV.1013 - 2 - or an acylamino group or R1 and R2 in adjacent posi- tions on the ring form a ring fused with the remain- der of the molecule, or R2 and R3 together are fused with the remainder of the molecule, each of R4 and R5 represents hydrogen or a hydrocarbon group. At least one of the substituents R1, R2, R3, R4 or R5 is a ballasting group X. GV.1013
323448
Agfa-Gevaert Naamloze Vennootschap
Borden Ladner Gervais Llp
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