Color-forming aminopyrimidine couplers and silver halide color photographic light-sensitive materials containing the coupler

Abstract

A color-forming aminopyrimidine coupler represented by formula (I): ##STR1## where R.sub.1, R.sub.2, and R.sub.3 independently represent a hydrogen atom, a halogen atom, an alkoxy group, an aryloxy group, a heterocyclic-oxy group, an alkylthio group, an arylthio group, a heterocyclic-thio group, a substituted or unsubstitued amino group, a heterocyclic group bonding to the pyrimidine ring via a nitrogen atom thereof, an alkyl group or an aryl group; provided that at least one of R.sub.1, R.sub.2 and R.sub.3 is an unsubstituted or substituted amino group, and that when any one of R.sub.1, R.sub.2 or R.sub.3 contains a sulfonic acid group or a salt thereof, R.sub.1 , R.sub.2 or R.sub.3 contains at least one linear or branched alkyl group and that the total carbon atoms in the alkyl group(s) are to be more than 8; and R.sub.4 represents a hydrogen atom, a halogen atom, an alkoxy group, an aryloxy group, a heterocyclic-oxy group, an alkylthio group, an arylthio group, a heterocyclic-thio group, a substituted or unsubstituted amino group, or a heterocyclic group bonding to the pyrimidine ring via a nitrogen atom thereof. At least one coupler of formula (I) is incorporated into the photographic constitutive layer of a color silver halide photographic material, which gives a color image with high heat-fastness.

Dependencies are inferred from the claim text.