Dye-sensitized photographic silver halide emulsions
Abstract
Abstract WHEREIN EITHER ONE OF R1 and R2 is an alkyl group and R3 and the other of R1 and R2 is an alkyl, aryl, sulphoalkyl, hydroxyalkyl, alkoxyalkyl, carboxyalkyl, aralkyl or carboxybenzyl group, or an acylsulphamoyl alkyl group of the formula -(CH2)nSO2NHCOR20 where n is an integer from one to six and R20 is an alkyl group, or an alkyl or aralkyl sulphamoyalkyl group of the formula(CH2)nSO2NHR21 where n is an integer from one t0 six and R21 is an alkyl or aralkyl group, Q is phenyl or phenyl substituted with at least one halogen, alkyl or alkoxy substituent, and D represents the atoms necessary to complete a benzimidazole, benzoxazole, benzothiazole, benzoselenazole or 3H-indole ring, the benzene nucleus in all cases being optionally substituted, and X is an anion. This application describes a trimethincyanine dye of the general formula:
Inventors
- 👤 Geoffrey Ernest Ficken
- 👤 Konrad Jerzy Bannert
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
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