Patent US5266455A successfully refreshed from Google Patents.
US5266455A
Expired / Lapsed
US
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Photographic elements containing protective overcoat compositions
Assignee: Eastman Kodak Co
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Filing: 1992-09-29
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Granted: 1993-11-30
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Expires: 2012-09-29
Abstract
Abstract Protective overcoat compositions and photographic elements containing same comprise: (a) a hydroxylated latex polymer; (b) a hydrolyzed metal lower alkoxide; and, (c) a fluoroalkyl polyether surface active agent. The overcoat is transparent and flexible and provides protection against scratches and abrasion.
Inventors
- 👤 Raymond T. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:12
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/02; C09D5/024; G; G03; G03C; G03C11/00; G03C11/08; Y; Y10; Y10S; Y10S430/00; Y10S430/151; Y10S430/162
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A photographic element comprising (a) a support, (b) at least one image-forming layer on such support, and (c) a protective overcoat layer overlying the support side of said element, said protective overcoat layer comprising (1) a hydroxylated latex polymer cross-linked by a hydrolyzed metal lower alkoxide, and (2) a fluoroalkyl polyether surface active agent.
Claim 2
Dependent Claim
54 words
A photographic element comprising (a) a support, (b) at least one image-forming layer on such support, and (c) a protective overcoat layer overlying the support side of said element, said protective overcoat layer comprising (1) a hydroxylated latex polymer cross-linked by a hydrolyzed metal lower alkoxide, and (2) a fluoroalkyl polyether surface active agent.
Claim 3
Dependent Claim
20 words
The photographic element of claim 1, wherein said latex polymer contains at least 40 mole percent of hydroxyl containing monomer.
Claim 4
Dependent Claim
15 words
The photographic element of claim 1, wherein said hydrolyzed metal lower alkoxide is polysilicic acid.
Claim 5
Dependent Claim
32 words
The photographic element of claim 1, wherein said hydrolyzed metal lower alkoxide comprises by weight proportion from about 2 parts to about 4 parts to one part of said hydroxylated latex polymer.
Claim 6
Dependent Claim
27 words
The photographic element of claim 1, wherein said hydrolyzed metal lower alkoxide comprises by weight proportion about 3 parts to one part of said hydroxylated latex polymer.
Claim 7
Dependent Claim
29 words
The photographic element of claim 1, wherein said fluoroalkyl polyether surface active agent comprises a mixture of compounds having the general formula ##STR2## wherein R is hydrogen or methyl.
Claim 8
Dependent Claim
31 words
The photographic element of claim 1, wherein said fluroalkyl polyether surface agent is present in an amount of from about 0.01 to about 0.1 percent by weight of said overcoat layer.
Claim 9
Dependent Claim
31 words
The photographic element of claim 1, wherein said fluroalkyl polyether surface agent is present in an amount of from about 0.04 to about 0.06 percent by weight of said overcoat layer.
Claim 10
Dependent Claim
10 words
The photographic element of claim 6, wherein R is hydrogen.
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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) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |