# US 4,397,943 A · Silver halide photographic light-sensitive material

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- Number: US 4,397,943 A
- Document ID: US4397943A
- Status: Granted
- Kind: A
- Application number: 06/391,037
- Filed: 1982-06-22
- Granted: 1983-08-09
- Earliest claimed: 1981-06-22
- Assignees: Fuji Photo Film Co., Ltd.
- Inventors: Shoji Ishiguro; Yoshiharu Fuseya; Tatsuo Heki; Akio Mitsui
- Web page: https://patentgrep.com/patent/US4397943A

## CPC

- G03C 1/053: Polymers obtained by reactions involving only carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
- Y10S 430/162: Protective or antiabrasion layer
- G03C: PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES (for photomechanical purposes G03F); PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY (photographic processes characterised by the use or manipulation of apparatus classifiable per se in subclass G03B, see G03B; photomechanical production of textured or patterned surfaces G03F; electrophotography, magnetography G03G)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A silver halide photographic light-sensitive material containing in at least one of its constituent layers a polymerized stabilizer which comprises repeating units having an 1,2,4-triazolo[1,5-a]pyrimidine moiety. The stabilizer does not inhibit the sensitivity of the material and greatly enhances its storability.

## Claims

### Claim 1

A silver halide photographic light-sensitive material, comprising:
a support base;
a silver halide emulsion layer; and
a polymer containing repeating units having a 1,2,4-triazolo[1,5-a]pyrimidine moiety, the polymer having a molecular weight in the range of 5.times.10.sup.3 to 3.times.10.sup.6.

### Claim 2 (depends on 1)

A silver halide photographic light-sensitive material as claimed in claim 1, wherein the molecular weight of the polymer is in the range of 1.times.10.sup.4 to 1.times.10.sup.6.

### Claim 3 (depends on 1, 2)

A silver halide photographic light-sensitive material as claimed in any of claims 1 or 2, wherein the repeating units of the polymer are represented by the general formula: ##STR41## wherein R.sup.1 is hydrogen or a lower alkyl group; L is a divalent bonding group; and Y is a monovalent 1,2,4-triazolo[1,5-a]pyrimidine moiety.

### Claim 4 (depends on 3)

A silver halide photographic light-sensitive material as claimed in claim 3, wherein the 1,2,4-triazolo[1,5-a]pyrimidine moiety is selected from a group consisting of those having the following general formulae (X-I), (X-II) and (X-III). ##STR42## wherein R.sup.3, R.sup.4, R.sup.5 and R.sup.6 may be the same or different and each represents hydrogen, an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, a substituted amino group, an unsubstituted or substituted carbamoyl group, a hydroxy group, an --OM group (wherein M represents an alkali metal ion or an ammonium ion), a cyano group, a halogen atom, an alkoxy group, an alkoxycarbonyl group, and an alkylthio group, or R.sup.4 and R.sup.5 may combine with each other and form a ring.

### Claim 5 (depends on 3)

A silver halide photographic light-sensitive material as claimed in claim 3, wherein L is selected from a group consisting of those having the following general formulae (L-I) and (L-II): ##STR43## wherein Q represents --O-- or ##STR44## wherein R.sup.2 represents hydrogen or a lower alkyl group), and Z represents an alkylene group.

### Claim 6 (depends on 4)

A silver halide photographic light-sensitive material as claimed in claim 4, wherein the 1,2,4-triazolo[1,5-a]pyrimidine moiety is selected from a group consisting of ##STR45##

### Claim 7 (depends on 5)

A silver halide photographic light-sensitive material as claimed in claim 5, wherein L is selected from a group consisting of --CONHCH.sub.2 --, --CONHCH.sub.2 CH.sub.2 --, --CONHCH.sub.2 OCOCH.sub.2 --, --CONHCH.sub.2 CH.sub.2 CH.sub.2 OCOCH.sub.2 --, --COOCH.sub.2 --, --COOCH.sub.2 CH.sub.2 --, --COOCH.sub.2 CH.sub.2 OCOCH.sub.2 --, --COOCH.sub.2 CH.sub.2 CH.sub.2 OCOCH.sub.2 --, and ##STR46##

### Claim 8 (depends on 3)

A silver halide photographic light-sensitive material as claimed in claim 3, wherein the polymer is present in an amount of 10.sup.-8 to 10.sup.-3 moles per 1 m.sup.2 of the support.

### Claim 9 (depends on 8)

A silver halide photographic light-sensitive material as claimed in claim 8, wherein the polymer is present in an amount of 10.sup.-7 to 5.times.10.sup.-4 moles per 1 m.sup.2 of the support.

### Claim 10 (depends on 3)

A silver halide photographic light-sensitive material as claimed in claim 3, wherein the polymer is present in an amount of 0.02 mg to about 2 g per 1 m.sup.2 of the support.

### Claim 11 (depends on 10)

A silver halide photographic light-sensitive material as claimed in claim 10, wherein the polymer is present in an amount of 0.2 mg to about 1 g per 1 m.sup.2 of the support.

### Claim 12 (depends on 3)

A silver halide photographic light-sensitive material as claimed in claim 3, wherein the polymer is present in an amount of about 60 mg to about 200 g per 1 mole of silver halide.

### Claim 13 (depends on 12)

A silver halide photographic light-sensitive material as claimed in claim 12, wherein the polymer is present in an amount of about 300 mg to about 100 g per 1 mole of silver halide.

### Claim 14 (depends on 1)

A silver halide photographic light-sensitive material as claimed in claim 1, wherein the polymers are homopolymers of unsaturated monomers represented by the following general formula ##STR47## wherein R.sup.1 represents hydrogen or a lower alkyl group, L represents a divalent bonding group, and X represents a monovalent 1,2,4-triazolo[1,5-a]pyrimidine moiety.

### Claim 15 (depends on 1)

A silver halide photographic light-sensitive material as claimed in claim 1, wherein the polymers are copolymers of unsaturated monomers represented by the following formula ##STR48## wherein R.sup.1 represents hydrogen or a lower alkyl group, L represents a divalent bonding group, and X represents a monovalent 1,2,4-triazolo[1,5-a]pyrimidine moiety, and one or more of ethylenically unsaturated copolymerizable monomers, the former unsaturated monomers being present in an amount of at least 0.1 mol% based on the total amount of those monomers.

### Claim 16 (depends on 1)

A silver halide photographic light-sensitive material as claimed in claim 1, said silver halide photographic light-sensitive material further comprises 1,2,4-triazolo[1,5-a]pyrimidine.