US4844986A
Expired / Lapsed
US
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Method for preparing lubricated surfaces and product
Assignee: Becton Dickinson and Co
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Filing: 1988-02-16
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Granted: 1989-07-04
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Expires: 2008-02-16
Abstract
Abstract A method for preparing stable even coatings of a silicone lubricant on a low surface energy polymeric surface of an article includes plasma treatment of the surface in an atmosphere of a siloxane monomer. A layer of polysiloxane is deposited on the low energy surface to give a polysiloxane surface. A film of a polysiloxane lubricant having a surface tension substantially the same as or less than the surface energy of the polysiloxane surface is applied to the polysiloxane layer.
Inventors
- 👤 Mutlu Karakelle
- 👤 Richard J. Zdrahala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:18
CPC Classifications
C; C10; C10M; C10M107/00; C10M107/50; A; A61; A61L; A61L29/00; A61L29/08; A61L29/085; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/12; C09; C09D; C09D4/00; C08J2383/00; C08J2383/02; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/05; C10M2229/052; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
65 words
A method for preparing a lubricated surface of an article comprising plasma depositing onto a polymeric surface a layer of a silicon-containing polymer to provide a silicon-containing polymeric surface and applying thereto a film of a polysiloxane lubricant, said film having a surface tension substantially the same as or less than the surface energy of said layer, said film thereby substantially fully wetting said layer.
Claim 2
Independent Claim
65 words
A method for preparing a lubricated surface of an article comprising plasma depositing onto a polymeric surface a layer of a silicon-containing polymer to provide a silicon-containing polymeric surface and applying thereto a film of a polysiloxane lubricant, said film having a surface tension substantially the same as or less than the surface energy of said layer, said film thereby substantially fully wetting said layer.
Claim 3
Dependent Claim
38 words
The method in accordance with claim 1 wherein said polymeric surface onto which the siliconcontaining polymer is deposited is selected from the group of materials consisting of polyethylene, polypropylene, polyurethane, polystyrene, polyvinylchloride, polytetrafluoroethylene and fluorinated ethylene propylene copolymer.
Claim 4
Dependent Claim
25 words
The method in accordance with claim 1 wherein said silicon-containing polymer is selected from the group consisting of a polysiloxane, a polysilane and a polysilazane.
Claim 5
Dependent Claim
28 words
A method in accordance with claim 3 wherein said silicon-containing polymer is selected from the group consisting of polymers of hexamethyldisiloxane, hexamethyldisilazane, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, tetramethylsilane, trimethylvinylsilane and trimethyltriethyldisiloxane.
Claim 6
Dependent Claim
19 words
The method in accordance with claim 1 wherein said depositing step includes generating plasma by a radio frequency technique.
Claim 7
Dependent Claim
24 words
The method in accordance with claim 5 wherein said depositing step includes generating plasma at a radio frequency of about 0.05 to 50 megahertz.
Claim 8
Dependent Claim
23 words
The method in accordance with claim 1 wherein said depositing step includes generating plasma at a power of about 1 to 1000 watts.
Claim 9
Dependent Claim
23 words
The method in accordance with claim 1 wherein said depositing step includes generating plasma at a temperature of about 0° to 200° C.
Claim 10
Dependent Claim
23 words
The method in accordance with claim 1 wherein said depositing step includes generating plasma at a pressure of about 0.1 to 100 torr.
Claim 11
Dependent Claim
28 words
The method in accordance with claim 1 wherein said depositing step includes generating plasma at a gas flow rate of about 1 to 200 cubic centimeters per minute.
Claim 12
Dependent Claim
22 words
The method in accordance with claim 1 wherein said depositing step includes maintaining the plasma deposition for about 0.01 to 12 hours.
Claim 13
Dependent Claim
55 words
The method in accordance with claim 1 wherein said polysiloxane lubricant is a polydialkylsiloxane of the formula: ##STR2## wherein R and R' are independently an alkyl group of 1 to 20 carbon atoms or are joined into a ring of 5 to 8 carbon atoms and n is an integer of from 1 to 2000.
Claim 14
Dependent Claim
13 words
The method in accordance with claim 12 wherein said polydialkylsiloxane is a polydimethylsiloxane.
Claim 15
Dependent Claim
19 words
The method in accordance with claim 12 wherein said lubricant has a viscosity from about 10 to 1,000,000 centistokes.
Claim 16
Independent Claim
63 words
A method for preparing a lubricated surface of an article comprising plasma depositing onto a surface a layer of a polymeric substance to give a polymeric surface and applying thereto a film of a polysiloxane lubricant, said film having a surface tension substantially the same as or less than the surface energy of said layer, said film thereby substantially fully wetting said layer.
Claim 17
Independent Claim
63 words
A method for preparing a lubricated surface of an article comprising plasma depositing onto a surface a layer of a polymeric substance to give a polymeric surface and applying thereto a film of a polysiloxane lubricant, said film having a surface tension substantially the same as or less than the surface energy of said layer, said film thereby substantially fully wetting said layer.
Claim 18
Dependent Claim
25 words
The method in accordance with claim 15 wherein said surface is selected from the group of materials consisting of a polymer, metal, glass and ceramic.
Claim 19
Independent Claim
95 words
A method for preparing a lubricated perfluorinated polymeric surface of an article comprising: (a) subjecting a perfluorinated polymeric surface to an ionizing plasma generated by passing a radio frequency discharge through a siloxane whereby said siloxane is polymerized and deposited as a layer of polysiloxane on said perfluorinated polymeric surface to give a polysiloxane surface; and (b) applying to said polysiloxane surface a film of polysiloxane lubricant, said polysiloxane lubricant having a surface tension substantially the same as or less than the surface energy of said polysiloxane surface, said film thereby fully wetting said layer.
Claim 20
Independent Claim
95 words
A method for preparing a lubricated perfluorinated polymeric surface of an article comprising: (a) subjecting a perfluorinated polymeric surface to an ionizing plasma generated by passing a radio frequency discharge through a siloxane whereby said siloxane is polymerized and deposited as a layer of polysiloxane on said perfluorinated polymeric surface to give a polysiloxane surface; and (b) applying to said polysiloxane surface a film of polysiloxane lubricant, said polysiloxane lubricant having a surface tension substantially the same as or less than the surface energy of said polysiloxane surface, said film thereby fully wetting said layer.
Claim 21
Dependent Claim
11 words
An article produced in accordance with the method of Claim 15.
Claim 22
Dependent Claim
9 words
The article of claim 18 being a medical device.
Claim 23
Dependent Claim
8 words
The article of claim 19 being a catheter.
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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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |