Silver halide color photographic material containing 5-pyrazolon

Details Silver halide color photographic material containing 5-pyrazolon Silver halide color photographic material containing 5-pyrazolon

1991-04-05

1992-03-17

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430555, 430607, 430613, G03C 134, G03C 7384

Patent

active

050968050

ABSTRACT:
A silver halide color photographic material containing at least one silver halide emulsion and at least one kind of 5-pyrazolone couplers having the releasable group shown by following formula (I) at the coupling position and at least one kind of the compounds shown by following formula (II): ##STR1## wherein L.sub.1 and L.sub.2 each represents a methylene group or an ethylene group; l and m each represents 0 or 1; R.sub.1 represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; R.sub.2 represents a group bonded to A by a carbon atom, an oxygen atom, a nitrogen atom or a sulfur atom; A represents a carbon atom or a sulfur atom; n represents 1 when A is a carbon atom, or 1 or 2 when A is a sulfur atom; B represents a carbon atom, an oxygen atom, a nitrogen atom, or a sulfur atom; and X represents an atomic group necessary for forming a ring; said R.sub.1 and R.sub.2 may combine with each other to form a ring; and when B is a carbon atom or a nitrogen atom, said B and R.sub.2 may combine with each other to form a ring; ##STR2## wherein R.sub.21 represents a hydrogen atom, a hydroxy group, or a substituted or unsubstituted alkyl, alkenyl, alkoxy, acyl, aryloxy, heterocyclic oxy or acyloxy group and R.sub.22 and R.sub.23 each represents a substituted or unsubstituted alkyl, alkenyl or heterocyclic group; said R.sub.21, R.sub.22 and R.sub.23 may form together a nitrogen-containing monocyclic or polycyclic heterocyclic ring and the sum of the carbon atom numbers of R.sub.21, R.sub.22, and R.sub.23 is at least 10.

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