Cyanine dyes for sensitizing silver halide emulsions to...

Details Cyanine dyes for sensitizing silver halide emulsions to... Cyanine dyes for sensitizing silver halide emulsions to...

C - Chemistry, Metallurgy

09

B

96/114, 260/382,

C09B 23/00 (2006.01) C09B 23/01 (2006.01) C09B 23/08 (2006.01) G03C 1/12 (2006.01)

Patent

CA 1304387

Cyanine Dyes For Sensitizing Silver Halide Emulsions To Infrared Radiation And Photographic Elements Including Them Abstract Cyanine dyes including two nitrogen containing heterocyclic nuclei, linked to each other through a rigidized conjugated 7, 9 or 11 carbon atom methine chain to form an amidinium-ion resonance system, are very good for sensitizing silver halide emulsions for use in photographic elements to be exposed to infrared radiation if one of said heterocyclic nuclei is 5-methyl-6-methoxy-benzothiazole.

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