US5366544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic layers for photographic elements and coating compositions for preparing the same
Assignee: Eastman Kodak Co
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Filing: 1993-05-27
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Granted: 1994-11-22
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Expires: 2013-05-27
Abstract
Abstract A coating composition for applying a vanadium pentoxide antistatic layer on a photographic element comprising from about 0.02 to about 0.08 percent by weight of vanadium pentoxide, from about 0.04 to about 1.6 percent by weight of a cellulose acetate binder polymer, said binder polymer having an acetyl content of from about 15 percent to about 35 percent by weight and the balance a solvent mixture of from 7.5 to 70 percent by weight of a C 1 -C 2 dialkyl ketone, from 10 to 60 percent by weight of a C 1 -C 4 alkanol and from 3 to 50 percent of water based on the weight of the solvent mixture.
Inventors
- 👤 Raymond T. Jones
- 👤 Jack J. Holt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:48
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/24; C09K; C09K3/00; C09K3/16; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/76; G03C1/85; G03C1/853
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
112 words
A coating composition for applying a vanadium pentoxide antistatic layer on a photographic element comprising from about 0.02 to about 0.08 percent by weight of vanadium pentoxide, from about 0.04 to about 1.6 percent by weight of a cellulose acetate binder polymer, said binder polymer having an acetyl content of from about 15 percent to about 35 percent by weight and the balance a solvent mixture of from 7.5 to 70 percent by weight of a C 1 -C 2 dialkyl ketone, from 10 to 60 percent by weight of a C 1 -C 4 alkanol and from 3 to 50 percent of water based on the weight of the solvent mixture.
Claim 2
Dependent Claim
112 words
A coating composition for applying a vanadium pentoxide antistatic layer on a photographic element comprising from about 0.02 to about 0.08 percent by weight of vanadium pentoxide, from about 0.04 to about 1.6 percent by weight of a cellulose acetate binder polymer, said binder polymer having an acetyl content of from about 15 percent to about 35 percent by weight and the balance a solvent mixture of from 7.5 to 70 percent by weight of a C 1 -C 2 dialkyl ketone, from 10 to 60 percent by weight of a C 1 -C 4 alkanol and from 3 to 50 percent of water based on the weight of the solvent mixture.
Claim 3
Dependent Claim
12 words
The coating composition of claim 1 wherein the dialkyl ketone is acetone.
Claim 4
Dependent Claim
13 words
The coating composition of claim 1 wherein the dialkyl ketone is methylethyl ketone.
Claim 5
Dependent Claim
11 words
The coating composition of claim 1 wherein the alkanol is methanol.
Claim 6
Dependent Claim
11 words
The coating composition of claim 1 wherein the alkanol is ethanol.
Claim 7
Dependent Claim
11 words
The coating composition of claim 1 wherein the alkanol is butanol.
Claim 8
Dependent Claim
15 words
The coating composition of claim 1 wherein the solvent mixture is acetone, methanol and water.
Claim 9
Dependent Claim
15 words
The coating composition of claim 1 wherein the solvent mixture is acetone, ethanol and water.
Claim 10
Dependent Claim
17 words
The coating composition of claim 1 wherein the solvent mixture is methylethyl ketone and methanol and water.
Claim 11
Dependent Claim
23 words
The coating composition of claim 1 wherein the dialkyl ketone is present in the amount of 30 to 40% based on the mixture.
Claim 12
Dependent Claim
25 words
The coating composition of claim 1 wherein the alkanol is present in the amount of 30-40 weight percent based on the weight of the mixture.
Claim 13
Dependent Claim
21 words
The coating composition of claim 1 wherein the acetyl content of the cellulose acetate binder is 15 to 32% by weight.
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) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |