Patent US3718472A successfully refreshed from Google Patents.
US3718472A
Expired / Lapsed
US
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Filter dyes for photographic elements
Assignee: Eastman Kodak Co
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Filing: 1971-03-04
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Granted: 1973-02-27
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Expires: 1991-03-04
Abstract
Abstract Oxonol, benzylidene and cinnamylidene dyes derived from cyanomethylsulfone compounds are useful as filter dyes, especially for photographic elements. They absorb primarily in the blue region of the spectrum. Bis(methylsulfonylacetonitrile)trimethine oxonol, sodium salt; 2p-dimethylaminobenzylidene-2-methylsulfonylacetonitrile and 2-pdimethylaminocinnamylidene-2-methylsulfonylacetonitrile are illustrative of the filter dyes of the invention.
Inventors
- 👤 G Oliver
- 👤 J Harbison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:38
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/10; C09B23/107; C09B23/02; C09B23/06; C09B23/08; C09B23/083; C09B23/086; C09B23/105; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
37 words
A photographic element comprising a support, at least one hydrophilic colloid layer containing light-sensitive silver halide which is overcoated with a hydrophilic colloid layer containing at least one compound having the formula designated I in claim 1.
Claim 2
Dependent Claim
17 words
A photographic element in accordance with claim 2 wherein the hydrophilic colloid layers consist essentially of gelatin.
Claim 3
Dependent Claim
94 words
A photographic element in accordance with claim 2 comprising a support, at least one hydrophilic colloid layer containing light-sensitive silver halide which is overcoated with a hydrophilic colloid layer containing at least one compound having the formula: wherein n represents o, 1 or 2, each R represents an unsubstituted alkyl group having one to 18 carbon atoms, a carboxyalkyl group having two to 11 carbon atoms, a hydroxyalkyl group having two to 10 carbon atoms, phenyl, a chlorophenyl group, a carboxyphenyl group or an (unsubstituted alkyl having one to 18 carbon atoms) phenyl group.
Claim 4
Dependent Claim
17 words
A photographic element in accordance with claim 4 wherein the hydrophilic colloid layers consist essentially of gelatin.
Claim 5
Dependent Claim
37 words
A photographic element comprising a support, at least one hydrophilic colloid layer containing light-sensitive silver halide which is overcoated with a hydrophilic colloid layer containing at least one compound having the formula designated II in claim 1.
Claim 6
Dependent Claim
17 words
A photographic element in accordance with claim 6 wherein the hydrophilic colloid layer consists essentially of gelatin.
Claim 7
Dependent Claim
161 words
A photographic element in accordance with claim 1 comprising a support, at least one hydrophilic colloid layer containing light-sensitive silver halide which is overcoated with a hydrophilic colloid layer containing at least one compound having the formula wherein p represents 0 or 1, each R represents an unsubstituted alkyl group having one to 18 carbon atoms, a carboxyalkyl group having two to 11 carbon atoms, a hydroxyalkyl group having two to 10 carbon atoms, phenyl, a chlorophenyl group, a carboxyphenyl group or an (unsubstituted alkyl having one to 18 carbon atoms)phenyl group, R1 and R2, are the same or different, and each represents an unsubstituted alkyl group having one to five carbon atoms, a hydroxyalkyl group having two to four carbon atoms, a sulfoalkyl group having two to four carbon atoms, a sulfatoalkyl group having two to four carbon atoms, a carboxyalkyl group having two to five carbon atoms, 2-chloroethyl, 2-bromoethyl or 2-cyanoethyl and X represents hydrogen or a salt-forming cation.
Claim 8
Dependent Claim
17 words
A photographic element in accordance with claim 8 wherein the hydrophilic colloid layers consist essentially of gelatin.
Claim 9
Dependent Claim
21 words
A photographic element in accordance with claim 1 wherein said compound in its sodium salt form is bis(methylsulfonylacetonitrile) trimethineoxonol, sodium salt.
Claim 10
Dependent Claim
20 words
A photographic element in accordance with claim 1 wherein said compound in its pyridine salt form is bis(methylsulfonylacetonitrile)methineoxonol, pyridine salt.
Claim 11
Dependent Claim
20 words
A photographic element in accordance with claim 1 wherein said compound in its sodium salt form is bis(dodecylsulfonylacetonitrile)trimethineoxonol, sodium salt.
Claim 12
Dependent Claim
13 words
A photographic element in accordance with claim 1 wherein said compound is 2-p-dimethylaminobenzylidene-2-methylsulfonylacetonitrile.
Claim 13
Dependent Claim
13 words
A photographic element in accordance with claim 1 wherein said compound is 2-p-dimethylaminoCinnamylidene-2-methyl-sulfonylacetonitrile.
Claim 14
Dependent Claim
146 words
A photographic element comprising a support and a uniform yellow hydrophilic colloid layer containing per square foot of the support the equivalent of 100 mg. of 2-(3,5-di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole selected from one or more of the compounds 2-(3,5-di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole, 2-(2-hydroxy-5-isooctylphenyl)-2H-benzotriazole, 2-(2-hydroxy-3, 5-di-tert-pentylphenyl)-2H-benzotriazole and 2-(2-hydroxy-5-dodecylphenyl)-2H-benzotriazole; the equivalent of 40 mg. of diethyl((3-ethyl-2-benzothiazolinylidene)ethylidene)-malonate selected from one or more of the compounds diethyl ((3-ethyl-2-benzothiazolinylidene)ethylidene)malonate, diethyl ((3-(3-sulfopropyl-2-benzothiazolinylidene)ethylidene)malonate, sodium salt and dibutyl((3-ethyl-2-benzothiazolinylidene) ethylidene)malonate; the equivalent of 40 mg. of 2-(3-cyano-3-n-dodecylsulfonylallylidene)-3-(3-sulfopropyl)thiazolidine, sodium salt selected from one or more of the compounds 2-(3-cyano-3-n-dodecylsulfonylallylidene)-3-(3-sulfopropyl)thiazolidine, sodium salt; 2-(3-cyano-3-n-dodecylsulfonyallylidene)-3-ethylthiazolidine, 2-(3-cyano-3-methylsulfonylallylidene)-3-(3-sulfopropyl)thiazolidine, sodium salt and 2-(3-10-carboxydecylsulfonyl)-3-cyanoallylidene)-3-(3 -sulfopropyl)thiazolidine, disodium salt, and the equivalent of 20 mg. of bis(n-dodecylsulfonylacetonitrile)-trimethine oxonol, sodium salt selected from one or more of the compounds bis(n-dodecylsulfonylacetonitrile)trimethine oxonol, sodium salt; bis(methylsulfonylacetonitrile)trimethine oxonol, pyridine salt; bis(p-nonylphenylsulfonylacetonitrile)trimethine oxonol, sodium salt and bis(5-carboxypentylsulfonylacetonitrile)-trimethine oxonol, trisodium salt wherein the yellow gelatin colloid layer is overcoated with a gelatin layer containing light-sensitive silver halide.
Claim 15
Dependent Claim
67 words
A photographic element comprising a support made of cellulose acetate and a uniform yellow hydrophilic colloid layer consisting essentially of gelatin and containing per square foot of the support 100 mg. of 2-(3,5-di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole, 40 mg. of diethyl((3-ethyl-2-benzothiazolinylidene)ethylidene)malonate, 40 mg. of 2-(3-cyano-3-n-dodecylsulfonylallylidene)-3-(3-sulfopropyl)thiazolidine, sodium salt and 20 mg. of bis(n-dodecylsulfonylacetonitrile)-trimethine oxonol, sodium salt wherein the yellow gelatin colloid layer is overcoated with a gelatin layer containing light-sensitive silver halide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |