US5320875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing an abrasion resistant coating
Assignee: Dow Chemical Co
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Filing: 1993-08-27
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Granted: 1994-06-14
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Expires: 2013-08-27
Abstract
Abstract A method of preparing a coated substrate is disclosed. The substrate is coated with a plasma generated polymer containing Si, Or C and H in specific atom ratio wherein the polymer also contains certain functional groups, A power density of about 10 6 to about 10 8 J/Kg is employed in the plasma polymerization process.
Inventors
- 👤 Ing-Feng Hu
- 👤 James C. Tou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:39
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/44; C23C16/455; C23C16/45561; C23C16/22; C23C16/30; C23C16/40; C23C16/401; C23C16/50; C23C16/517; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
68 words
A method of providing an abrasion resistant coating onto the surface of a substrate employing plasma enhanced chemical vapor deposition of an organosilicone monomer gas in a plasma reaction zone and oxygen gas which comprises plasma polymerizing the organosilicone monomer in the presence of excess oxygen employing a power density within the range of about. 10 6 to about 10 8 J/Kg in the presence of the substrate.
Claim 2
Independent Claim
68 words
A method of providing an abrasion resistant coating onto the surface of a substrate employing plasma enhanced chemical vapor deposition of an organosilicone monomer gas in a plasma reaction zone and oxygen gas which comprises plasma polymerizing the organosilicone monomer in the presence of excess oxygen employing a power density within the range of about. 10 6 to about 10 8 J/Kg in the presence of the substrate.
Claim 3
Dependent Claim
55 words
The method of claim 1 including the step of conducting the oxygen and organosilicone monomer gases in a direction which is essentially perpendicular to the substrate surface and through a magnetic field of at least 100 gauss which is contained essentially in a zone adjacent to the plasma zone and into the plasma reaction zone.
Claim 4
Dependent Claim
43 words
The method of claim 1 wherein the organosilicone monomer and oxygen gases are flowed through a cathode in a direction which is essentially perpendicular to the surface of the substrate which is contained on an anode, said cathode also providing a magnetic field.
Claim 5
Dependent Claim
29 words
The method of claim 1 including the subsequent step of rendering the abrasion-resistant coating more hydrophobic by treating the abrasion resistant coating with a plasma polymerized second organosilicone coating.
Claim 6
Dependent Claim
30 words
The method of claim 1 including the subsequent step of treating the SiO x coating on the abrasion resistant layer with O 2 plasma to render the coating more hydrophilic.
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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) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |