Patent US5910401A successfully refreshed from Google Patents.
US5910401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelatin-modified polyurethane and polyester film base
Assignee: Eastman Kodak Co
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Filing: 1998-06-04
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Granted: 1999-06-08
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Expires: 2018-06-04
Abstract
Abstract The present invention is an imaging base which includes a polyester film support and an adhesion promoting layer directly adhered to a surface of the support. The adhesion promoting layer is formed by the coating and subsequent drying of a coating composition comprising a gelatin-grafted-polyurethane. The gelatin-grafted polyurethane is covalently bound to the polyurethane through a grafting agent wherein the ratio of gelatin to polyurethane is from 1:10 to 2:1. In one embodiment of the invention the imaging support is coated with at least one silver halide emulsion layer to form a photographic element.
Inventors
- 👤 Charles C. Anderson
- 👤 Brian A. Schell
- 👤 Mario D. DeLaura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:07
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; G03C1/005; G03C1/04; G03C1/047; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31565
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
An imaging base comprising: a polyester film support; an adhesion promoting layer directly adhered to a surface of said support formed by the coating and subsequent drying of a coating composition comprising gelatin-grafted polyurethane comprising gelatin covalently bound to a polyurethane through a grafting agent, wherein a ratio of gelatin to polyurethane is from 1:10 to 2:1.
Claim 2
Dependent Claim
57 words
An imaging base comprising: a polyester film support; an adhesion promoting layer directly adhered to a surface of said support formed by the coating and subsequent drying of a coating composition comprising gelatin-grafted polyurethane comprising gelatin covalently bound to a polyurethane through a grafting agent, wherein a ratio of gelatin to polyurethane is from 1:10 to 2:1.
Claim 3
Dependent Claim
17 words
The imaging base of claim 1, wherein said grafting agent comprises carbamoylonium salts, dication ethers or carbodiimides.
Claim 4
Dependent Claim
27 words
The imaging base of claim 1, wherein said coating composition further comprises another polymer selected from the group consisting of water soluble polymers or water dispersible polymers.
Claim 5
Dependent Claim
32 words
The imaging base of claim 1, wherein the coating composition further comprises crosslinking agents, conductive agents, fillers, magnetic recording particles, dyes, pigments, coating aids, surfactants, rheology modifiers, lubricating agents or matting agents.
Claim 6
Dependent Claim
15 words
The imaging base of claim 1 wherein said support comprises poly(ethylene terephthalate) or poly(ethylene naphthalate).
Claim 7
Dependent Claim
68 words
A photographic element comprising: a polyester film support; an adhesion promoting layer directly adhered to a surface of said support formed by the coating and subsequent drying of a coating composition comprising gelatin-grafted polyurethane comprising gelatin covalently bound to a polyurethane through a grafting agent, wherein a ratio of gelatin to polyurethane is from 1:10 to 2:1. at least one silver halide emulsion layer superposed on said support.
Claim 8
Dependent Claim
68 words
A photographic element comprising: a polyester film support; an adhesion promoting layer directly adhered to a surface of said support formed by the coating and subsequent drying of a coating composition comprising gelatin-grafted polyurethane comprising gelatin covalently bound to a polyurethane through a grafting agent, wherein a ratio of gelatin to polyurethane is from 1:10 to 2:1. at least one silver halide emulsion layer superposed on said support.
Claim 9
Dependent Claim
17 words
The photographic element of claim 6, wherein said grafting agent comprises carbamoylonium salts, dication ethers or carbodiimides.
Claim 10
Dependent Claim
27 words
The photographic element of claim 6, wherein said coating composition further comprises another polymer selected from the group consisting of water soluble polymers or water dispersible polymers.
Claim 11
Dependent Claim
32 words
The photographic element of claim 6, wherein the coating composition further comprises crosslinking agents, conductive agents, fillers, magnetic recording particles, dyes, pigments, coating aids, surfactants, rheology modifiers, lubricating agents or matting agents.
Claim 12
Dependent Claim
15 words
The photographic element of claim 6 wherein said support comprises poly(ethylene terephthalate) or poly(ethylene naphthalate).
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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) | 2002-06-07 | 2002-12-07 | 2003-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-07 | 2006-12-07 | 2007-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-07 | 2010-12-07 | 2011-06-08 | $7700.00 | Window Closed / Lapsed |