Patent US2035084A successfully refreshed from Google Patents.
US5425980A
Expired / Lapsed
US
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Use of glow discharge treatment to promote adhesion of aqueous coats to substrate
Assignee: Eastman Kodak Co
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Filing: 1994-02-22
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Granted: 1995-06-20
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Expires: 2014-02-22
Abstract
Abstract The present invention is a polyester film base which has a surface approximately 5 nm thick. The surface of the film base has been altered to include about 6 to 15 atomic percent nitrogen in the form of imines, secondary amines and primary amines in the ratio of about 1:1:2. The invention also includes a film base whose surface includes oxygen in the form of hydroxyl, ether, epoxy, carbonyl or carboxyl groups wherein the oxygen is about 4 to 10 atomic percent above the original surface content of the base. The polyester film base can be either polyethylene terephthalate or polyethylene naphthalate.
Inventors
- 👤 Jeremy M. Grace
- 👤 Janglin Chen
- 👤 Louis J. Gerenser
- 👤 David A. Glocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:51
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; B; B05; B05D; B05D3/00; B05D3/14; B05D3/141; B05D3/142; B05D3/144; G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/915; C08J2367/00; C08J2367/02; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
49 words
A film base comprising: a polyester substrate having a surface approximately 5.0 nm thick, the surface including nitrogen from about 7.0 atomic percent to about 15 atomic percent a wherein the nitrogen is in the form of imines, secondary amines and primary amines in a ratio of about 1:1:2.
Claim 2
Dependent Claim
49 words
A film base comprising: a polyester substrate having a surface approximately 5.0 nm thick, the surface including nitrogen from about 7.0 atomic percent to about 15 atomic percent a wherein the nitrogen is in the form of imines, secondary amines and primary amines in a ratio of about 1:1:2.
Claim 3
Dependent Claim
13 words
The film base according to claim 1 wherein the polyester is polyethylene naphthalate.
Claim 4
Dependent Claim
13 words
The film base according to claim 1 wherein the polyester is polyethylene terephthalate.
Claim 5
Dependent Claim
34 words
The film base according to claim 1 wherein the contact angle of the surface with a buffered aqueous solution having a pH between 11 and 12 is from about 20 to about 35 degrees.
Claim 6
Dependent Claim
34 words
The film base according to claim 1 wherein the contact angle of the surface with a buffered aqueous solution having a pH between 2.5 and 3.5 is from about 35 to about 45 degrees.
Claim 7
Dependent Claim
21 words
The film base according to claim 1 wherein the surface further includes oxygen in the form of carboxyl and carbonyl groups.
Claim 8
Dependent Claim
93 words
A polyester substrate having a surface approximately 5.0 nm thick, the surface including nitrogen from about 7.0 atomic percent to about 15 atomic percent wherein the nitrogen is in the form of imines, secondary amines and primary amines in a ratio of about 1:1:2, the substrate formed form the steps comprising: providing a polyester substrate; and passing the substrate in front of a powered electrode wherein the energy dose applied on the surface is between 0.06 and 4.5 J/cm 2 and a pressure at the electrode is from 35 mTorr to 100 mTorr.
Claim 9
Dependent Claim
93 words
A polyester substrate having a surface approximately 5.0 nm thick, the surface including nitrogen from about 7.0 atomic percent to about 15 atomic percent wherein the nitrogen is in the form of imines, secondary amines and primary amines in a ratio of about 1:1:2, the substrate formed form the steps comprising: providing a polyester substrate; and passing the substrate in front of a powered electrode wherein the energy dose applied on the surface is between 0.06 and 4.5 J/cm 2 and a pressure at the electrode is from 35 mTorr to 100 mTorr.
Claim 10
Dependent Claim
24 words
The substrate according to claim 7 wherein an atmosphere at the electrode is selected from the group consisting of nitrogen, ammonia and inert gases.
Claim 11
Dependent Claim
12 words
The substrate according to claim 7 wherein the substrate comprises polyethylene naphthalate.
Claim 12
Dependent Claim
12 words
The substrate according to claim 7 wherein the substrate comprises polyethylene terephthalate.
Claim 13
Dependent Claim
47 words
A film base comprising: a polyethylene naphthalate substrate having a surface approximately 5 nm thick, the surface including nitrogen from about 9 to about 10 atomic percent wherein the nitrogen is in the form of imines, secondary amines and primary amines in a ratio of about 1:1:2.
Claim 14
Dependent Claim
47 words
A film base comprising: a polyethylene naphthalate substrate having a surface approximately 5 nm thick, the surface including nitrogen from about 9 to about 10 atomic percent wherein the nitrogen is in the form of imines, secondary amines and primary amines in a ratio of about 1:1:2.
Claim 15
Dependent Claim
47 words
A film base comprising: a polyethylene terephthalate substrate having a surface approximately 5.0 nm thick, the surface including nitrogen from about 13 to about 14 atomic percent wherein the nitrogen is in the form of imines, secondary amines and primary amines in a ratio of about 1:1:2.
Claim 16
Dependent Claim
47 words
A film base comprising: a polyethylene terephthalate substrate having a surface approximately 5.0 nm thick, the surface including nitrogen from about 13 to about 14 atomic percent wherein the nitrogen is in the form of imines, secondary amines and primary amines in a ratio of about 1:1:2.
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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) | 1998-06-19 | 1998-12-19 | 1999-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-19 | 2002-12-19 | 2003-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-19 | 2006-12-19 | 2007-06-20 | $7700.00 | Window Closed / Lapsed |