Novel hardener for gelatin and method for hardening gelatin
AssigneeMitsubishi Paper Mills Limited
InventorsMinoru Ohashi, Katsuaki Iwaosa
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Abstract
Compounds represented by the following general formula are used as hardeners for gelatin, in particular gelatin layers of photographic light sensitive materials ##STR1## (wherein R and X are the same as defined in the specification).
Claims19
A process for hardening gelatin, characterized by reacting gelatin with a compound represented by the following general formula:
- ##STR13## where R represents an alkyl or aryl group and X represents an oxy group represented by --O--R.sub.1 wherein R.sub.1 is a pyridyl group represented by ##STR14## or a quaternary salt thereof represented by ##STR15## these pyridyl group and quaternary salt thereof may be substituted with an alkyl, aryl, aralkyl, carboxyl or a group containing the same or a sulfo group or a group containing the same, Y.sup..theta. is not present when they are substituted with a carboxyl group, sulfo group or group containing carboxyl or sulfo group, R.sub.4 is an alkyl group or aralkyl group and when R.sub.4 contains a sulfo group or carboxyl group, Y.sup..theta. is not present and Y.sup..theta. is an anion.
A gelatin-silver halide photographic emulsion which contains a compound represented by the following general formula:
- ##STR16## where R represents an alkyl or aryl group and X represents an oxy group represented by --O--R.sub.1 wherein R.sub.1 is a pyridyl group represented by ##STR17## or a quaternary salt thereof represented by ##STR18## these pyridyl group and quaternary salt thereof may be substituted with an alkyl, aryl, aralkyl, carboxyl or a group containing the same or a sulfo group or a group containing the same, Y.sup..theta. is not present when they are substituted with a carboxyl group, sulfo group or group containing carboxyl or sulfo group, R.sub.4 is an alkyl group or aralkyl group and when R.sub.4 contains a sulfo group or carboxyl group, Y.sup..theta. is not present and Y.sup..theta. is an anion.
A photographic light sensitive material which comprises a support having thereon at least one gelatin-containing layer which is hardened with a compound represented by the following general formula:
- ##STR19## where R represents an alkyl or aryl group and X represents an oxy group represented by --O--R.sub.1 wherein R.sub.1 is a pyridyl group represented by ##STR20## or a quaternary salt thereof represented by ##STR21## these pyridyl group and quaternary salt thereof may be substituted with an alkyl, aryl, aralkyl, carboxyl or a group containing the same or a sulfo group or a group containing the same, Y.sup..theta. is not present when they are substituted with a carboxyl group, sulfo group or group containing carboxyl or sulfo group, R.sub.4 is an alkyl group in aralkyl group and when R.sub.4 contains a sulfo group or carboxyl group, Y.sup..theta. is not present and Y.sup..theta. is an anion.
A process for providing a photographic light sensitive material comprising a support having thereon at least one gelatin-containing layer in which the gelatin containing layer is contacted with a compound represented by the following general formula:
- ##STR22## where R represents an alkyl or aryl group and X represents an oxy group represented by --O--R.sub.1 wherein R.sub.1 is a pyridyl group represented by ##STR23## or a quaternary salt thereof represented by ##STR24## these pyridyl group and quaternary salt thereof may be substituted with an alkyl, aryl, aralkyl, carboxyl or a group containing the same or a sulfo group or a group containing the same, Y.sup..theta. is not present when they are substituted with a carboxyl group, sulfo group or group containing carboxyl or sulfo group, R.sub.4 is an alkyl group or aralkyl group and when R.sub.4 contains a sulfo group or carboxyl group, Y.sup..theta. is not present and Y.sup..theta. is an anion.
Dependencies are inferred from the claim text.