US4714671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic recording material containing a polymeric gelatine plasticizer
Assignee: Agfa Gevaert AG
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Filing: 1986-04-25
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Granted: 1987-12-22
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Expires: 2006-04-25
Abstract
Abstract Polymer latices in which the dispersed particles consist of a soft core and a hard shell are suitable plasticizers for gelatine in photographic recording materials.
Inventors
- 👤 Gunter Helling
- 👤 Wolfgang Himmelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:00
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/31; G03C7/00; G03C7/30; G03C7/392; G03C7/396
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
Colour photographic recording material comprising at least one light-sensitive silver halide emulsion layer and at least one light-sensitive or non-light-sensitive gelatine-containing binder layer containing a dispersion of a photographic auxiliary substance, an oil former and a gelatine plasticizer wherein the gelatine plasticizer is a polymer latex in which the dispersed particles consist to an extent of from 80 to 95% by weight of a soft core wherein the polymer has a glass transition temperature T g below -10° C. and from 5 to 20% by weight of a hard shell wherein the polymer has a glass transition temperature T g above 36° C.
Claim 2
Dependent Claim
103 words
Colour photographic recording material comprising at least one light-sensitive silver halide emulsion layer and at least one light-sensitive or non-light-sensitive gelatine-containing binder layer containing a dispersion of a photographic auxiliary substance, an oil former and a gelatine plasticizer wherein the gelatine plasticizer is a polymer latex in which the dispersed particles consist to an extent of from 80 to 95% by weight of a soft core wherein the polymer has a glass transition temperature T g below -10° C. and from 5 to 20% by weight of a hard shell wherein the polymer has a glass transition temperature T g above 36° C.
Claim 3
Dependent Claim
27 words
Recording material according to claim 1, characterised in that the polymer of the shell of the dispersed particles is formed by polymerisation of (co)polymerisable, olefinically unsaturated monomers.
Claim 4
Dependent Claim
57 words
Recording material according to claim 2, characterised in that the polymer of the shell of the dispersed particles is formed by polymerisation of styrene or an alkyl methacrylate containing 1 to 4 carbon atoms in the alkyl moiety or a monomer mixture consisting to an extent of at least 55% by weight of the above mentioned monomer.
Claim 5
Dependent Claim
30 words
Recording material according to claim 3, characterised in that the monomer mixture contains 0 to 20% by weight of water-soluble comonomers and/or 0 to 5% by weight of cross-linking comonomers.
Claim 6
Dependent Claim
27 words
Recording material according to claim 2, characterised in that the polymer in the interior of the dispersed particles is formed from (co)polymerisable, olefinically unsaturated monomers by polymerisation.
Claim 7
Dependent Claim
43 words
Recording material according to claim 5, characterised in that the polymer in the interior of the dispersed particles is formed from an alkyl acrylate containing 2 to 8 carbon atoms in the alkyl moiety or a mixture of such alkyl acrylates by polymerisation.
Claim 8
Dependent Claim
21 words
Recording material according to claim 1, characterised in that the photographic auxiliary substance is a coupler, in particular a colour coupler.
References Cited (Backward Citations)
US4510238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |