US5179147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective overcoat compositions and photographic elements containing same
Assignee: Eastman Kodak Co
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Filing: 1990-05-23
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Granted: 1993-01-12
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Expires: 2010-05-23
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 21:46
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/02; C09D5/024; G; G03; G03C; G03C11/00; G03C11/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
41 words
An aqueous coating composition useful in forming cross-linked protective layers on photographic elements, such coating composition comprising: (a) a hydroxylated polymer formed from a water-insoluble, hydroxyl-containing monomer; (b) a hydrolyzed metal lower alkoxide; and (c) a fluoroalkyl polyether surface active agent.
Claim 2
Dependent Claim
41 words
An aqueous coating composition useful in forming cross-linked protective layers on photographic elements, such coating composition comprising: (a) a hydroxylated polymer formed from a water-insoluble, hydroxyl-containing monomer; (b) a hydrolyzed metal lower alkoxide; and (c) a fluoroalkyl polyether surface active agent.
Claim 3
Dependent Claim
20 words
The aqueous coating composition of claim 1, wherein said polymer contains at least 40 mole percent of hydroxyl containing monomer.
Claim 4
Dependent Claim
16 words
The aqueous coating composition of claim 1, wherein said hydrolyzed metal lower alkoxide is polysilicic acid.
Claim 5
Dependent Claim
32 words
The aqueous coating composition 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 polymer.
Claim 6
Dependent Claim
27 words
The aqueous coating composition of claim 1, wherein said hydrolyzed metal lower alkoxide comprises by weight proportion about 3 parts to one part of said hydroxylated polymer.
Claim 7
Dependent Claim
30 words
The aqueous coating composition 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
33 words
The aqueous coating composition 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 aqueous coating composition.
Claim 9
Dependent Claim
33 words
The aqueous coating composition 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 aqueous coating composition.
Claim 10
Dependent Claim
11 words
The aqueous coating composition of claim 6, wherein R is hydrogen.
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) | 1996-01-12 | 1996-07-13 | 1997-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-12 | 2000-07-13 | 2001-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-12 | 2004-07-13 | 2005-01-12 | $7700.00 | Window Closed / Lapsed |