US3926436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide element containing polymeric colour forming couplers
Assignee: Individual
•
Filing: 1974-02-15
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Granted: 1975-12-16
•
Expires: 1994-02-15
Abstract
Abstract Light-sensitive photographic colour elements are described containing polymeric compounds comprising recurring colour coupler or competing coupler units and units derived from a monomer corresponding to the formula: wherein: R is hydrogen, C1-C4 alkyl or chlorine, X is -O- or -N(R'')- wherein R'' is hydrogen or lower alkyl, Y is a divalent hydrocarbon group which may be interrupted by oxygen and/or sulphur, and M is a cation. The polymeric compounds can be incorporated in hydrophilic colloid coating compositions from latices that do not contain ballasting emulsifying agents, show less foaming tendency, have high compatibility with hydrophilic colloids such as gelatin and make possible to coat thinner layers.
Inventors
- 👤 Marcel Jacob Monbaliu
- 👤 Jan Jozef Priem
- 👤 Roger Henri Vrydaghs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:09
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/327; G03C7/3275; C; C08; C08F; C08F20/00; C08F20/62
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
48 words
A PHOTOGRAPHIC COLOUR ELEMENT COMPRISING A SUPPORT AND AT LEAST ONE LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER WHEREIN THE ELEMENT COMPRISES A COPOLYMER LATEX CONTAINING RECURRING UNITS DERIVED FROM A FIRST ETHYLENICALLY UNSATURATED MONOMER WHICH WILL UNDERGO OXIDATIVE COUPLING WITH AN AROMATIC PRIMARY AMINO COMPOUND CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
48 words
A PHOTOGRAPHIC COLOUR ELEMENT COMPRISING A SUPPORT AND AT LEAST ONE LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER WHEREIN THE ELEMENT COMPRISES A COPOLYMER LATEX CONTAINING RECURRING UNITS DERIVED FROM A FIRST ETHYLENICALLY UNSATURATED MONOMER WHICH WILL UNDERGO OXIDATIVE COUPLING WITH AN AROMATIC PRIMARY AMINO COMPOUND CORRESPONDING TO THE FORMULA:
Claim 3
Dependent Claim
21 words
A photographic element according to claim 1, wherein in the said formula Y represents a straight-chain or branchedchain C2-C4 alkylene group.
Claim 4
Dependent Claim
15 words
A photographic element according to claim 2, wherein in the said formula X is -O-.
Claim 5
Dependent Claim
25 words
A photographic element according to claim 1, wherein in the said formula Q is a moiety of a phenol, naphthol, pyrazolone, indazolon or acylacetamide coupler.
Claim 6
Dependent Claim
30 words
A photographic element according to claim 1, wherein the polymer comprises recurring units of additional ethylenically unsaturated monomers which are not capable of oxidative coupling with aromatic primary amino compounds.
Claim 7
Dependent Claim
39 words
A photographic element according to claim 5, wherein the said additional monomers are one or more members selected from the group consisting of acrylic acid, methacrylic acid, esters and amides derived from these acids and styrene and its derivatives.
Claim 8
Dependent Claim
31 words
A photographic element according to claim 1, wherein the polymeric compound is incorporated into the coating composition of the said emulsion layer or hydrophilic colloid layer from an aqueous dispersion (latex).
Claim 9
Dependent Claim
27 words
A photographic element according to claim 1, wherein the said polymeric compound is a polymeric colour coupler and is present in a light-sensitive silver halide emulsion layer.
Claim 10
Dependent Claim
31 words
A PHOTOGRAPHIC ELEMENT ACCORDING TO CLAIM 1, WHEREIN THE SAID POLYMERIC COMPOUND IS A POLYMERIC COMPETING COUPLER AND IS PRESENT IN AN INTERMEDIATE NON-LIGHT-SENSITIVE WATER-PERMEABLE COLLOID LAYER OF THE PHOTOGRAPHIC ELEMENT.
References Cited (Backward Citations)
US2353262A
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US3024221A
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US2976294A
Cited
US3356686A
Cited
US3370952A
Cited
US3767412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |