Patent US5532118A successfully refreshed from Google Patents.
US5532118A
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Light-sensitive imaging element
Assignee: Eastman Kodak Co
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Filing: 1995-06-02
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Granted: 1996-07-02
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Expires: 2015-06-02
Abstract
Abstract An imaging element comprising a light-sensitive imaging layer and a polyester film support having coated thereon greater than 0.17 gm/m 2 of a layer of a self-crosslinking polyurethane derived from an isocyanate terminated prepolymer extended with an aliphatic polyamine and end-capped with N-methylol hydrazide groups, the prepolymer being derived from (a) a diisocyanate, and (b) a polyester polyol and having pendant water dispersing, carboxylic salt groups on the polymer chain.
Inventors
- 👤 Charles L. Bauer
- 👤 Mary A. Krenceski
- 👤 John J. Fitzgerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:15
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; G03C1/795; G03C1/7954; G03C1/915; Y; Y10; Y10S; Y10S430/00; Y10S430/136; Y10S430/138
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
An imaging element comprising a light-sensitive imaging layer and a polyester film support having coated thereon greater than 0.17 gm/m 2 of a layer of a self-crosslinking polyurethane derived from an isocyanate terminated prepolymer extended with an aliphatic polyamine and end-capped with N-methylol hydrazide groups, the prepolymer being derived from (a) a diisocyanate, and (b) a polyester polyol and having pendant water dispersing, carboxylic salt groups on the polymer chain and a hydrophilic colloid layer coated on the layer of self-crosslinking polyurethane.
Claim 2
Dependent Claim
82 words
An imaging element comprising a light-sensitive imaging layer and a polyester film support having coated thereon greater than 0.17 gm/m 2 of a layer of a self-crosslinking polyurethane derived from an isocyanate terminated prepolymer extended with an aliphatic polyamine and end-capped with N-methylol hydrazide groups, the prepolymer being derived from (a) a diisocyanate, and (b) a polyester polyol and having pendant water dispersing, carboxylic salt groups on the polymer chain and a hydrophilic colloid layer coated on the layer of self-crosslinking polyurethane.
Claim 3
Dependent Claim
12 words
The imaging element of claim 1 wherein the hydrophilic colloid is gelatin.
Claim 4
Dependent Claim
11 words
The imaging element of claim 1 wherein the diisocyanate is aliphatic.
Claim 5
Dependent Claim
12 words
The imaging element of claim 1 wherein the polyester polyol is aliphatic.
Claim 6
Dependent Claim
16 words
The imaging element of claim 1 wherein the isocyanate terminated prepolymer contains units derived from melamine.
Claim 7
Dependent Claim
21 words
The imaging element of claim 4 wherein the aliphatic polyester polyol is a derivative of neopentyl glycol, hexanediol, and adipic acid.
Claim 8
Dependent Claim
14 words
The imaging element of claim 6 wherein the prepolymer contains units derived from melamine.
Claim 9
Dependent Claim
14 words
The imaging element of claim 1 wherein the light-sensitive imaging layer contains silver halide.
Claim 10
Dependent Claim
17 words
The imaging element of claim 1 wherein the light-sensitive layer is applied on the hydrophilic colloid layer.
Claim 11
Dependent Claim
21 words
The imaging element of claim 1 wherein the polyester film support is treated with corona discharge, UV, glow discharge, or flame.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-02 | 2000-01-01 | 2000-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-02 | 2004-01-01 | 2004-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-02 | 2008-01-01 | 2008-07-02 | $7700.00 | Window Closed / Lapsed |