US5532118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive imaging element
Assignee: Eastman Kodak Co
•
Filing: 1995-06-02
•
Granted: 1996-07-02
•
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 00:04
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.
References Cited (Backward Citations)
US3143421A
Cited
US3201249A
Cited
US4335029A
Cited
US4695532A
Cited
US4913970A
Cited
US4933237A
Cited
US5034275A
Cited
EP0583787A2
Cited
US5378592A
Cited
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 |