US 5,667,959 A · Silver halide photographic material and hydroxamic acid based compound used therefor

Abstract

A silver halide photographic material is disclosed, which comprises a support having thereon at least one light-sensitive silver halide emulsion layer, wherein said silver halide photographic material contains at least one compound represented by the following formula (I): ##STR1## wherein R.sup.1 represents a substituted or unsubstituted alkyl group having from 1 to 6 carbon atoms; and R.sup.2 represents a branched alkyl group having 20 or more carbon atoms, a straight chain or branched alkenyl group having 17 or more carbon atoms, or a substituted alkyl or substituted alkenyl group substituted with at least one substituent selected from the group consisting of an alkoxycarbonyl group, an alkenoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an acyl group, an alkoxyl group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group, an aryl group and a heterocyclic group, and having 12 or more carbon atoms in total.

Claims13

Dependent claims

A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein said silver halide photographic material contains at least one compound represented by the following formula (I):

##STR32## wherein R.sup.1 represents a substituted or unsubstituted alkyl group having from 1 to 6 carbon atoms;
and R.sup.2 represents a branched alkyl group having 20 or more carbon atoms, a straight chain or branched alkenyl group having 17 or more carbon atoms, or a substituted alkyl or substituted alkenyl group substituted with at least one substituent selected from the group consisting of an alkoxycarbonyl group, an alkenoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an alkoxyl group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group, and a heterocyclic group, said substituted alkyl or substituted alkenyl group having 12 or more carbon atoms in total.

The silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein said silver halide photographic material contains at least one compound represented by the following formula (II):

##STR33## wherein R.sup.1 represents a substituted or unsubstituted alkyl group having from 1 to 6 carbon atoms;
R.sup.a, R.sup.b, R.sup.c and R.sup.d each independently represents a hydrogen atom, a substituted or unsubstituted alkyl group having from 1 to 18 carbon atoms, or a substituted or unsubstituted alkenyl group having from 2 to 18 carbon atoms;
X represents --OR.sup.6 or --N(R.sup.6)(R.sup.7);
and R.sup.6 and R.sup.7, which may be the same or different, each represents a hydrogen atom, a substituted or unsubstituted alkyl group having from 1 to 22 carbon atoms, a substituted or unsubstituted alkenyl group havig from 2 to 22 carbon atoms, or an aryl group having from 6 to 22 carbon atoms.

1 more element

Dependencies are inferred from the claim text.

Silver halide photographic material and hydroxamic acid based compound used therefor

Life of this patent

Silver halide photographic material and hydroxamic acid based compound used therefor

Life of this patent

Abstract

Claims13