US 4,242,430 AGranted

Method for stabilizing organic substrate materials including photographic dye images against light

AssigneeFuji Photo Film Co., Ltd.

InventorsHiroshi Hara, Kotaro Nakamura, Yoshiaki Suzuki

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Abstract

Organic substrates, especially photographic dyes, are stabilized against light by using a Cu, Co, Ni, Pd or Pt complex of formula (I). ##STR1## wherein M represents Cu, Co, Ni, Pd or Pt; R.sub.1 and R.sub.6 may be the same or different and represent a hydrogen atom or an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group or an arylsulfonyl group; and R.sub.2, R.sub.3, R.sub.4 and R.sub.5 which may be the same or different represent a hydrogen atom, a halogen atom, a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group bonded to a carbon atom on a benzene ring directly or through a divalent linking group, or R.sub.2 and R.sub.3, R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 respectively may combine and represent the non-metallic atomic groupings required to form a 6-membered ring.

Claims14

Dependent claims

A method for stabilizing photographically useful organic substrate against light, said organic substrate being selected from the group consisting of anthraquinone dyes, quinoneimine dyes, azoic dyes, methine dyes, polymethine dyes, indoamine dyes, indigoid dyes, indophenol dyes, carbonium dyes and formazan dyes, which comprises causing an organic substrate substance having an absorption maximum in the range of about 300 nm to about 800 nm to be present together with at least one complex of the formula ##STR13## wherein M represents a Cu, Co, Ni, Pd or Pt atom, R.sub.1 and R.sub.6 are the same or different, and represent a hydrogen atom or an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group, or an arylsulfonyl group;

R.sub.2, R.sub.3, R.sub.4 and R.sub.5 which may be the same or different represent a hydrogen atom, a halogen atom, a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group bonded to a carbon atom on the benzene rings either directly or through a divalent linking group, or R.sub.2 and R.sub.3, R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 may combine to form the non-metallic atomic groupings necessary to form a 6-membered ring, said compound of the formula (I) being present in a stabilizing amount which does not adversely affect color hue as well as color purity of the photographically useful organic substrate material.

A color photographic material comprising at least one layer containing a photographic dye image wherein said layer or adjacent layer contains a compound of the formula (I) in an amount sufficient to stabilize said color photographic material against the action of light while not adversely affecting color hue as well as color purity of the color photographic material ##STR15## wherein M represents a Cu, Co, Ni, Pd or Pt atom;

R.sub.1 and R.sub.6 are the same or different, and represent a hydrogen atom or an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylsulfonyl group, or an arylsulfonyl group;
R.sub.2, R.sub.3, R.sub.4 and R.sub.5 which may be the same or different represent a hydrogen atom, a halogen atom, a cyano group, or an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group bonded to a carbon atom on the benzene rings either directly or through a divalent linking group, or R.sub.2 and R.sub.3, R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 may combine to form the non-metallic atomic groupings necessary to form a 6-membered ring.

Dependencies are inferred from the claim text.