US4465738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wettable coatings for inorganic substrates
Assignee: Borg Warner Corp
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Filing: 1983-06-15
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Granted: 1984-08-14
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Expires: 2003-06-15
Abstract
Abstract In organic substrates having a surface coating including a first layer of plasma-polymerized alkane and a top layer of plasma-polymerized polar organic compound exhibit improved wettability and hydrophilicity, and a method for applying such coatings to the surfaces of inorganic substrates to improve their hydrophilicity and wettability characteristics.
Inventors
- 👤 Franklin S. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:59
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/62; C; C03; C03C; C03C17/00; C03C17/34; C03C17/3405; B05D5/00; B05D5/04; B05D7/00; B05D7/50; B05D7/52; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
64 words
A method for improving the wettability and hydrophilicity of the surface of an inorganic substrate comprising applying to a surface of said substrate a first layer formed by the reaction of an alkane in the presence of a low pressure glow discharge, and a top layer formed by the reaction of a polar organic compound in the presence of a low pressure glow discharge.
Claim 2
Independent Claim
64 words
A method for improving the wettability and hydrophilicity of the surface of an inorganic substrate comprising applying to a surface of said substrate a first layer formed by the reaction of an alkane in the presence of a low pressure glow discharge, and a top layer formed by the reaction of a polar organic compound in the presence of a low pressure glow discharge.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said alkane is a C 1 -C 6 hydrocarbon.
Claim 4
Dependent Claim
10 words
The method of claim 1 wherein said alkane is methane.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein said polar organic compound is an organic compound containing a polar group and an ethylenic double bond.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein said polar organic compound is acrylic acid.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein the inorganic substrate is selected from the group consisting of glass and aluminum.
Claim 8
Dependent Claim
38 words
The method of claim 1 wherein said low pressure glow discharge is carried out at a temperature of from about 10° C. to about 40° C. and at a pressure of from about 0.1 to about 1.0 Torr.
Claim 9
Independent Claim
115 words
A method for improving the wettability and hydrophilicity of the surface of an inorganic substrate selected from the group consisting of glass and aluminum, comprising first exposing at least one surface of said substrate to a low pressure glow discharge in the presence of a vapor of a C 1 -C 6 alkane hydrocarbon, then exposing said substrate to a low pressure glow discharge in the presence of a vapor of a polar organic compound, said exposures to low pressure glow discharge being carried out at a temperature in the range of from about 10° C. to about 40° C. and at a pressure in the range of from about 0.1 to about 1.0 Torr.
Claim 10
Independent Claim
115 words
A method for improving the wettability and hydrophilicity of the surface of an inorganic substrate selected from the group consisting of glass and aluminum, comprising first exposing at least one surface of said substrate to a low pressure glow discharge in the presence of a vapor of a C 1 -C 6 alkane hydrocarbon, then exposing said substrate to a low pressure glow discharge in the presence of a vapor of a polar organic compound, said exposures to low pressure glow discharge being carried out at a temperature in the range of from about 10° C. to about 40° C. and at a pressure in the range of from about 0.1 to about 1.0 Torr.
Claim 11
Dependent Claim
19 words
The method of claim 8 wherein the alkane hydrocarbon is methane and the polar organic compound is acrylic acid.
Claim 12
Dependent Claim
96 words
An inorganic substrate having a coating on at least one surface, said coating comprising a first layer formed by the reaction of a C 1 -C 6 alkane hydrocarbon in the presence of a low pressure glow discharge, and a top layer formed by the reaction of a polar organic compound in the presence of a low pressure glow discharge, each of said reactions being carried out at a temperature in the range of from about 10° to about 40° C. and at a pressure in the range of from about 0.1 to about 1.0 Torr.
Claim 13
Dependent Claim
96 words
An inorganic substrate having a coating on at least one surface, said coating comprising a first layer formed by the reaction of a C 1 -C 6 alkane hydrocarbon in the presence of a low pressure glow discharge, and a top layer formed by the reaction of a polar organic compound in the presence of a low pressure glow discharge, each of said reactions being carried out at a temperature in the range of from about 10° to about 40° C. and at a pressure in the range of from about 0.1 to about 1.0 Torr.
Claim 14
Dependent Claim
19 words
The inorganic substrate of claim 10 wherein said hydrocarbon is methane and said polar organic compound is acrylic acid.
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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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |