Novel photographic pentamethine cyanine dyes

Novel pentamethine cyanine dyes which act as spectral sensitizers for silver halide in the infrared region of the spectrum are of the formula:- where R1 and R2 are each alkyl or together form a saturated ring, R3 and R4 are each alkyl or together form a saturated ring, R5 and R7 are alkyl, substitut...

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Bibliographische Detailangaben

Hauptverfasser:	TERENCE CHARLES WEBB, GEOFFREY ERNEST FICHEN
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES
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