US4925832A
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Silver halide photographic light-sensitive systems
Assignee: Tulalip Consultoria Comercial SU
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Filing: 1988-10-31
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Granted: 1990-05-15
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Expires: 2008-10-31
Abstract
Abstract A silver halide photographic light sensitive emulsion containing a hydrazine of the general formula R.sup.3 -NR.sup.4 -NR.sup.5 -G-X (I) in which R 3 represents an aryl group, one of R 4 and R 5 is a hydrogen and the other is selected from hydrogen, aryl sulphonyl and trifluoroacetyl, G represents carbonyl, sulphonyl, sulphoxy, phosphoryl or an N-substituted or unsubstituted imino group and X is a moiety such that at a pH in the range of 9.5 to 12.5 in the presence of an oxidized hydroquinone a cyclization reaction takes place cleaving the moiety -G-X from the remainder of the molecule and forming a cyclic structure comprising atoms of the moiety -G-X.
Inventors
- 👤 Kevin P. Hall
- 👤 Andrew W. Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:20
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/061; C; C07; C07C; C07C243/00; C07C243/24; C07C243/26; C07C243/30; C07C243/32; C07C243/34; C07C243/38; Y; Y10; Y10S; Y10S430/00; Y10S430/15
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A compound of the formula: TABLE 6
______________________________________
Developer 1 pH 11.0
Compound
Amount Used
Rel. log sensitivity
Maximum
No. mol/mol AgX
at 0.1 above fog
density
Contrast
______________________________________
6 8.3 × 10.sup.-3
1.20 4.0 20
18 8.3 × 10.sup.-3
0.94 3.4 3
2 8.3 × 10.sup.-3
1.05 4.0 4
______________________________________ in which: p and q are independently selected from 0 or 1 such that (p+q)=1 t is 0 through 3 R 11 is alkyl of up to 12 carbon atoms, alkoxy of up to 12 carbon atoms, halogen or NHCOR 10 in which R 10 is H, alkyl of up to 12 carbon atoms, or aryl of up to 12 carbon atoms M is NH 2 or OH with the proviso that when M is OH and p is zero, t is other than zero.
Claim 2
Dependent Claim
136 words
A compound of the formula: TABLE 6
______________________________________
Developer 1 pH 11.0
Compound
Amount Used
Rel. log sensitivity
Maximum
No. mol/mol AgX
at 0.1 above fog
density
Contrast
______________________________________
6 8.3 × 10.sup.-3
1.20 4.0 20
18 8.3 × 10.sup.-3
0.94 3.4 3
2 8.3 × 10.sup.-3
1.05 4.0 4
______________________________________ in which: p and q are independently selected from 0 or 1 such that (p+q)=1 t is 0 through 3 R 11 is alkyl of up to 12 carbon atoms, alkoxy of up to 12 carbon atoms, halogen or NHCOR 10 in which R 10 is H, alkyl of up to 12 carbon atoms, or aryl of up to 12 carbon atoms M is NH 2 or OH with the proviso that when M is OH and p is zero, t is other than zero.
Claim 3
Dependent Claim
11 words
A compound as claimed in claim 1 of the formula ##STR24##
Claim 4
Dependent Claim
15 words
A compound according to claim 1 in which the hydrazine is of the formula ##STR25##
Claim 5
Dependent Claim
8 words
The compound of claim 1 which is 1(2'-aminophenylacetyl)-2-phenylhydrazine.
Claim 6
Dependent Claim
168 words
A hydrazine compound of the general formula R.sup.3 -NR.sup.4 -NR.sup.5 -G-X (I) in which: R 3 represents an aryl group, one of R 4 and R 5 is a hydrogen and the other is selected from hydrogen, aryl sulphonyl and trifluoroacetyl, G represents carbonyl and X is a moiety such that at a pH in the range of 9.5 to 12.5 in the presence of an oxidised hydroquinone a cyclisation reaction takes place cleaving the moiety -G-X from the remainder of the molecule and forming a cyclic structure comprising atoms of the moiety -G-X in which X represents ##STR26## in which: R 6 to R 9 are independently selected from H, alkyl of up to 12 carbon atoms or aryl of up to 12 carbon atoms, A represents the necessary atoms to complete a benzene ring which may possess substituents, Y represents OH, and n is 0 or 1, m is 0 or 1 and (n+m) is 1 or 2 with the proviso that the formula excludes 1(2'-hydroxymethylbenzoyl)-2-phenylhydrazine.
Claim 7
Dependent Claim
168 words
A hydrazine compound of the general formula R.sup.3 -NR.sup.4 -NR.sup.5 -G-X (I) in which: R 3 represents an aryl group, one of R 4 and R 5 is a hydrogen and the other is selected from hydrogen, aryl sulphonyl and trifluoroacetyl, G represents carbonyl and X is a moiety such that at a pH in the range of 9.5 to 12.5 in the presence of an oxidised hydroquinone a cyclisation reaction takes place cleaving the moiety -G-X from the remainder of the molecule and forming a cyclic structure comprising atoms of the moiety -G-X in which X represents ##STR26## in which: R 6 to R 9 are independently selected from H, alkyl of up to 12 carbon atoms or aryl of up to 12 carbon atoms, A represents the necessary atoms to complete a benzene ring which may possess substituents, Y represents OH, and n is 0 or 1, m is 0 or 1 and (n+m) is 1 or 2 with the proviso that the formula excludes 1(2'-hydroxymethylbenzoyl)-2-phenylhydrazine.
Claim 8
Dependent Claim
10 words
The compound of claim 5 in which -GX represents ##STR27##
Claim 9
Dependent Claim
168 words
A hydrazine compound of the general formula ##STR28## in which: R 3 represents an aryl group or an aryl group with one or more non-electron withdrawing substituents, one of R 4 and R 5 is a hydrogen and the other is selected from hydrogen, aryl sulphonyl and trifluoroacetyl, G represents carbonyl, ##STR29## is X, a moiety such that at a pH in the range of 9.5 to 12.5 in the presence of an oxidised hydroquinone a cyclisation reaction takes place cleaving the moiety -G-X from the remainder of the molecule and forming a cyclic structure comprising atoms of the moiety -G-X, R 6 to R 9 are independently selected from H, alkyl of up to 12 carbon atoms or aryl of up to 12 carbon atoms, A represents the necessary atoms to complete a benzene ring which may possess substituents, Y represents OH, and n is 0 or 1, m is 0 or 1 and (n+m) is 1 or 2 with the proviso that the formula excludes 1(2'-hydroxymethylbenzoyl)-2-phenylhydrazine.
Claim 10
Dependent Claim
168 words
A hydrazine compound of the general formula ##STR28## in which: R 3 represents an aryl group or an aryl group with one or more non-electron withdrawing substituents, one of R 4 and R 5 is a hydrogen and the other is selected from hydrogen, aryl sulphonyl and trifluoroacetyl, G represents carbonyl, ##STR29## is X, a moiety such that at a pH in the range of 9.5 to 12.5 in the presence of an oxidised hydroquinone a cyclisation reaction takes place cleaving the moiety -G-X from the remainder of the molecule and forming a cyclic structure comprising atoms of the moiety -G-X, R 6 to R 9 are independently selected from H, alkyl of up to 12 carbon atoms or aryl of up to 12 carbon atoms, A represents the necessary atoms to complete a benzene ring which may possess substituents, Y represents OH, and n is 0 or 1, m is 0 or 1 and (n+m) is 1 or 2 with the proviso that the formula excludes 1(2'-hydroxymethylbenzoyl)-2-phenylhydrazine.
Claim 11
Dependent Claim
10 words
The compound of claim 7 in which -GX represents ##STR30##
Claim 12
Dependent Claim
23 words
The compound of claim 7 wherein R 3 represents a phenyl group and A represents the atoms necessary to complete a phenyl group.
References Cited (Backward Citations)
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