US5288602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide element containing silicone oil
Assignee: Agfa Gevaert AG
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Filing: 1993-08-10
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Granted: 1994-02-22
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Expires: 2013-08-10
Abstract
Abstract A photographic recording material which contains a support and thereupon at least one light-sensitive silver halide emulsion layer together with a protective layer containing gelatine over the light-sensitive layer and optionally a layer on the reverse side containing gelatine, and the protective layer containing gelatine and/or the reverse side layer containing gelatine contains a silicone oil of the formula I ##STR1## in which R 1 means hydroxy, alkoxy, cycloalkoxy, aryloxy, R 2 means a residue of the formula ##STR2## or R 1 R 3 , R 4 means alkyl, aryl, cycloalkyl, R 5 , R 6 means H, alkyl, aminoalkyl, polyaminoalkyl, A means a straight-chain or branched alkene residue with 3 to 20 C atoms, wherein there is between the Si atom and the N atom a carbon chain of at least 3 C atoms, m means 10 to 1000 and p means 1 to 350 and is hardened, distinguished by equally good coefficients of static friction and sliding friction before and after processing and by constantly good dry scratch resistance.
Inventors
- 👤 Markus Geiger
- 👤 Hans-Horst Steinbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; Y; Y10; Y10S; Y10S430/00; Y10S430/151; Y10S430/152
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
A photographic recording material which contains a support and thereupon at least one light-sensitive silver halide emulsion layer together with a protective layer over the light-sensitive layer and optionally a layer on the reverse side, wherein the protective layer and/or reverse side layer contains gelatine, characterised in that the protective layer containing gelatine and/or the reverse side layer containing gelatine contains a silicone oil of the formula I ##STR15## in which R 1 means hydroxy, alkoxy, cycloalkoxy, aryloxy, R 2 means a residue of the formula ##STR16## or R 1 R 3 , R 4 means alkyl, aryl, cycloalkyl, R 5 , R 6 means H, alkyl, aminoalkyl, polyaminoalkyl, A means a straight-chain or branched alkene residue with 3 to 20 C atoms, wherein there is between the Si atom and the N atom a carbon chain of at least 3 C atoms, m means 10 to 1000 and p means 1 to 350, and is hardened.
Claim 2
Dependent Claim
157 words
A photographic recording material which contains a support and thereupon at least one light-sensitive silver halide emulsion layer together with a protective layer over the light-sensitive layer and optionally a layer on the reverse side, wherein the protective layer and/or reverse side layer contains gelatine, characterised in that the protective layer containing gelatine and/or the reverse side layer containing gelatine contains a silicone oil of the formula I ##STR15## in which R 1 means hydroxy, alkoxy, cycloalkoxy, aryloxy, R 2 means a residue of the formula ##STR16## or R 1 R 3 , R 4 means alkyl, aryl, cycloalkyl, R 5 , R 6 means H, alkyl, aminoalkyl, polyaminoalkyl, A means a straight-chain or branched alkene residue with 3 to 20 C atoms, wherein there is between the Si atom and the N atom a carbon chain of at least 3 C atoms, m means 10 to 1000 and p means 1 to 350, and is hardened.
Claim 3
Dependent Claim
33 words
Photographic material according to claim 1, characterised in that the silicone oil of the formula I in the protective layer is used over the light-sensitive layer, of which there is at least one.
Claim 4
Dependent Claim
36 words
Photographic material according to claim 2, characterised in that the protective layer contains 0.2 to 2 g of gelatine per m 2 and the silicone oil in an amount of 1 to 100 mg/m 2 .
Claim 5
Dependent Claim
115 words
Photographic material according to claim 1, characterised in that R 1 means C 1 to C 4 alkoxy, R 2 means C 1 to C 4 alkoxy or a residue of the formula, ##STR17## R 3 , R 4 mean C 1 to C 4 alkyl, R 5 , R 6 mean hydrogen, C 1 to C 4 alkyl, cyclohexyl or phenyl, a residue --CH 2 --CH 2 --NH 2 or a residue --(CH 2 --CH 2 --NH) q --CH 2 --CH 2 --NH 2 A means --9--CH 2 --CH 2 --) n -- m means 50 to 200, n means 3 to 8, p means 30 to 150 and q means 1 to 8.
Claim 6
Dependent Claim
25 words
Photographic material according to claim 1, characterised in that the protective layer and/or reverse side layer contain inert particles of an organic or inorganic nature.
Claim 7
Dependent Claim
34 words
Photographic material according to claim 5, characterised in that the inert particles have a particle diameter of 0.7 to 2.5 μm and are used in an amount of 1 to 10 mg/m 2 .
Claim 8
Dependent Claim
16 words
Photographic material according to claim 1, characterised in that hardening is performed with an instant hardener.
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) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |