US5053243A
Expired / Lapsed
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Preparation of adsorbent layers
Assignee: Shell USA Inc
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Filing: 1990-09-21
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Granted: 1991-10-01
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Expires: 2010-09-21
Abstract
Abstract A process for the preparation of adsorbent layer upon a non-permeable substrate comprising a) generating plasma by introducing a non-polymerizable fluid into a plasma generation zone using a direct current arc; b) introducing hydrocarbonaceous monomers into said plasma generation zone thereby forming polymerizable hydrocarbonaceous compounds, setting a ratio of flow rates of the hydrocarbonaceous monomers and the non-polymerizable fluid in the range from >0-0.001; and c) contacting the substrate with the glowing zone of said plasma.
Inventors
- 👤 Hubertus J. A. Schuurmans
- 👤 Paulus C. N. Crouzen
- 👤 Gerard Hoekstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:37
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28033; B01J20/30; B01J20/32; B01J20/3214; B01J20/3231; B01J20/3242; B01J20/3268; B01J20/3291; B01J20/3297; C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/44; C23C16/50
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
A process for the preparation of an adsorbent layer upon a non-permeable substrate, comprising the steps of generating a plasma by introducing a non-polymerizable fluid into a plasma generation zone using a direct current arc, introducing hydrocarbonaceous monomers into said plasma generation zone thereby forming polymerizable hydrocarbonaceous compounds, setting a ratio of flow rates of the hydrocarbonaceous monomers and the non-polymerizable fluid in the range from >0-0.001, and contacting the substrate with the glowing zone of said plasma.
Claim 2
Dependent Claim
78 words
A process for the preparation of an adsorbent layer upon a non-permeable substrate, comprising the steps of generating a plasma by introducing a non-polymerizable fluid into a plasma generation zone using a direct current arc, introducing hydrocarbonaceous monomers into said plasma generation zone thereby forming polymerizable hydrocarbonaceous compounds, setting a ratio of flow rates of the hydrocarbonaceous monomers and the non-polymerizable fluid in the range from >0-0.001, and contacting the substrate with the glowing zone of said plasma.
Claim 3
Dependent Claim
17 words
The process as claimed in claim 1 wherein said hydrocarbonaceous monomers comprise at least one aromatic monomer.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein said substrate is a metal.
Claim 5
Dependent Claim
10 words
The process of claim 3 wherein said metal is aluminium.
Claim 6
Dependent Claim
37 words
The process of claim 1 wherein said total pressure in the plasma-generation zone is in the range from about 10 to about 100 kPa and in the glowing zone in the range up to about 1000 Pa.
Claim 7
Dependent Claim
14 words
The process of claim 1 wherein said deposition rates are up to 100 nm/s.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein said non-polymerizable fluid is an inorganic gas.
Claim 9
Dependent Claim
19 words
The process of claim 7 wherein said inorganic gas is selected from the group of nitrogen, hydrogen and oxygen.
Claim 10
Dependent Claim
13 words
The process of claim 7 wherein said inorganic gas is an inert gas.
Claim 11
Dependent Claim
11 words
The process of claim 9 wherein said aromatic monomer is toluene.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-30 | 1995-04-01 | 1995-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-30 | 1999-04-01 | 1999-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-30 | 2003-04-01 | 2003-10-01 | $7700.00 | Window Closed / Lapsed |