JPH0460115B

Merocyanine dyes of the formula: in which: R , R and R independently represent a hydrogen atom or a substituent compatible with cyanine dyes, k+j=1, R represents a lower alkyl group containing 1 to 4 carbon atoms, (CH2)nCOOX, in which n is an integer, e.g. 1 to 10, and X is a cation, e.g. hydrogen o...

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description Merocyanine dyes of the formula: in which: R , R and R independently represent a hydrogen atom or a substituent compatible with cyanine dyes, k+j=1, R represents a lower alkyl group containing 1 to 4 carbon atoms, (CH2)nCOOX, in which n is an integer, e.g. 1 to 10, and X is a cation, e.g. hydrogen or a metal or ammonium ion, Y=S or N-R , and R and R independently represent a lower alkyl group of 1 to 4 carbon atoms, cyclohexyl, phenyl, (CH2)nCOOX in which n and X are as defined above, with the proviso that at least one of R , R and R represents (CH2)nCOOX in which n is at least 4 preferably at least 5. The dyes give excellent spectral sensitisation to dry silver systems and exhibit good stability both before coating and during drying.
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subjects ADHESIVES
AUXILIARY PROCESSES IN PHOTOGRAPHY
CHEMISTRY
CINEMATOGRAPHY
DYES
ELECTROGRAPHY
HETEROCYCLIC COMPOUNDS
HOLOGRAPHY
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC CHEMISTRY
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES
PHOTOGRAPHY
PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES
PHYSICS
POLISHES
title JPH0460115B
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