Radiation imagery chemistry: process – composition – or product th – Imaged product – Nonsilver image
Patent
1981-04-28
1983-04-12
Brown, J. Travis
Radiation imagery chemistry: process, composition, or product th
Imaged product
Nonsilver image
430390, 430562, G03C 110
Patent
active
043798195
ABSTRACT:
A color-photographic recording material for the silver dye bleach process, which contains oil-soluble azo dyes of the formula ##STR1## in which R.sub.1 is hydrogen, alkyl, alkoxy, alkenyl, acyl, carbalkoxy, acylamino, carbamide, sulfonamide, alkylsulfone, arylsulfone, aryloxy, arylsulfonic acid ester, hydroxyl, cyano, nitro or halogen, R.sub.2 is hydrogen, alkyl, alkoxy, carbalkoxy, carbamide, sulfonamide, alkylsulfone, arylsulfone, aryloxy, cyano, nitro or halogen, R.sub.3 is hydrogen, alkyl, alkoxy, phenoxy, sulfonamide, alkylsulfone, sulfonic acid ester, cyano, nitro, halogen, carbalkoxy, carbamide or phosphoric acid diester, R.sub.4 is hydrogen, alkyl, alkoxy, carbalkoxy, carbamide, sulfonamide, acylamino, alkylsulfone, arylsulfone, hydroxyl, cyano, nitro or halogen, R.sub.5 is hydrogen, alkyl or carbalkoxy, X.sub.1 is hydrogen, alkyl, alkoxy, acylamino, alkylsulfonamide or hydroxyl, Y.sub.1 is hydrogen, alkyl, alkoxy, amino, carbalkoxy, arylsulfonamide, acylamino, halogen, hydroxyl or phosphamic acid ester, Z.sub.1 is hydrogen, alkyl, alkoxy, acylamino, acyl, carbalkoxy, alkylsulfonamide or halogen or forms a ring with Y.sub.1, and W.sub.1 is hydrogen, alkyl, alkoxy or halogen. The substituents mentioned can, where relevant, themselves be further substituted.
The oil-soluble azo dyes are easily incorporated into silver halide gelatin emulsions and are very stable therein. Because of the good oil-solubility of the azo dyes, very thin layers can be cast in producing photographic materials, and this has an advantageous effect on, for example, the image sharpness.
REFERENCES:
patent: 2455169 (1948-11-01), Glass et al.
patent: 3053655 (1962-09-01), Dreyfuss et al.
patent: 3244525 (1966-04-01), Mory et al.
patent: 4235957 (1980-11-01), Kohrt et al.
Fryberg Mario
Jan Gerald
Lenoir John
Brown J. Travis
Ciba-Geigy AG
Kolodny Joseph G.
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