Patent US4299724A successfully refreshed from Google Patents.
Patent US5258262A successfully refreshed from Google Patents.
US5258262A
Expired / Lapsed
US
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Radiation-sensitive film composed of at least one mono-molecular layer of fluorine-containing amphiphiles
Assignee: Hoechst AG
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Filing: 1990-01-12
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Granted: 1993-11-02
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Expires: 2010-01-12
Abstract
Abstract Radiation-sensitive film composed of at least one monomolecular layer of fluorine-containing amphiphiles. If a vinyl monomer containing fluoroalkyl side groups is copolymerized with a vinyl monomer containing oxirane groups, an amphiphilic polymer is obtained. To prepare a sandwich, a polymer is dissolved in a volatile organic solvent which is immiscible with water, the solution is spread on the water/air boundary surface, the resultant layer is compressed after the solvent has evaporated and transferred to a solid layer support by the Langmuir-Blodgett technique. The oxirane rings are cleaved and the film crosslinked by the action of high-energy radiation on the film.
Inventors
- 👤 Christian Erdelen
- 👤 Helmut Ringsdorf
- 👤 Werner Prass
- 👤 Ude Scheunemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:47
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; Y; Y10; Y10S; Y10S430/00; Y10S430/136; Y10S430/143; Y10T; Y10T428/00; Y10T428/26; Y10T428/261; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
68 words
A layer element comprising a film of an amphiphilic polymer which contains hydrophobic fluoroalkyl chains of the formula CF.sub.3 (CF.sub.2).sub.n (CH.sub.2).sub.m, where n is 0 to 23 and m is 0 to 24 and m+n is 8 to 24 and oxirane radicals, the film being deposited on a solid support, the improvement comprising that the film is composed of at least one monomolecular ordered layer of the polymer.
Claim 2
Dependent Claim
68 words
A layer element comprising a film of an amphiphilic polymer which contains hydrophobic fluoroalkyl chains of the formula CF.sub.3 (CF.sub.2).sub.n (CH.sub.2).sub.m, where n is 0 to 23 and m is 0 to 24 and m+n is 8 to 24 and oxirane radicals, the film being deposited on a solid support, the improvement comprising that the film is composed of at least one monomolecular ordered layer of the polymer.
Claim 3
Dependent Claim
32 words
A process for curing the film as claimed in claim 1, deposited on the support, which comprises allowing high-energy radiation to act on the film until the oxirane rings have been cleaved.
Claim 4
Dependent Claim
45 words
The process as claimed in claim 2, wherein the film is partially protected from the radiation by a structured mask and the nonirradiated film portions are removed by means of a solvent after completing the irradiation, a structured film remaining behind on the solid support.
Claim 5
Dependent Claim
21 words
The process as claimed in claim 2, wherein the film is structured by electron bombardment in an electron beam writing unit.
Claim 6
Dependent Claim
129 words
A process for preparing a layer element as claimed in claim 1, which comprises dissolving at least one polymer which has hydrophobic fluoroalkyl chains of the formula CF 3 (CF 2 ) n (CH 2 ) m , where N=0 to 23 and m=0 to 24 and m+n =8 to 24 and oxirane radicals, in a volatile organic solvent which is immiscible with water, thus forming a solution, spreading the solution on an aqueous subphase in a Languir film balance, evaporating the solvent from the solution spread on the aqueous subphase in the Langmuir film balance, thus leaving a monomolecular layer on a water surface, compressing this layer and transferring the layer to a solid layer support by immersion and emersion of the solid support into the aqueous subphase.
Claim 7
Dependent Claim
98 words
A layer element comprising a film containing an amphiphilic polymer (A) which contains hydrophobic fluoroalkyl chains of the formula CF 3 (CH 2 ) n (CH 2 ) m , where n=0 to 23 and m=0 to 24 and m+n=8 to 24 and oxirane radicals, wherein the film consists of a plurality of monomolecular layers of the polymer A and a plurality of monomolecular layers of a second amphiphilic compound B which is free of fluoroalkyl groups, the layers of A and B being arranged in alternating manner A--B--A--B and the film being deposited on a solid support.
Claim 8
Dependent Claim
98 words
A layer element comprising a film containing an amphiphilic polymer (A) which contains hydrophobic fluoroalkyl chains of the formula CF 3 (CH 2 ) n (CH 2 ) m , where n=0 to 23 and m=0 to 24 and m+n=8 to 24 and oxirane radicals, wherein the film consists of a plurality of monomolecular layers of the polymer A and a plurality of monomolecular layers of a second amphiphilic compound B which is free of fluoroalkyl groups, the layers of A and B being arranged in alternating manner A--B--A--B and the film being deposited on a solid support.
Claim 9
Dependent Claim
100 words
A layer element comprising a film containing an amphiphilic polymer (A) which contains hydrophobic fluoroalkyl chains of the formula CF 3 (CH 2 ) n (CH 2 ) m , where n=0 to 23 and m=0 to 24 and m+n =8 to 24 and oxirane radicals, wherein the film consists of a plurality of monomolecular layers of the polymer A and a plurality of monomolecular layers of a second amphiphilic compound B which is free of fluoroalkyl groups, the layers of A and B being arranged in the manner A --A--B--B--A--A--B--B and the film being deposited on a solid support.
Claim 10
Dependent Claim
100 words
A layer element comprising a film containing an amphiphilic polymer (A) which contains hydrophobic fluoroalkyl chains of the formula CF 3 (CH 2 ) n (CH 2 ) m , where n=0 to 23 and m=0 to 24 and m+n =8 to 24 and oxirane radicals, wherein the film consists of a plurality of monomolecular layers of the polymer A and a plurality of monomolecular layers of a second amphiphilic compound B which is free of fluoroalkyl groups, the layers of A and B being arranged in the manner A --A--B--B--A--A--B--B and the film being deposited on a solid support.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-11-01 | 1997-05-03 | 1997-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-01 | 2001-05-03 | 2001-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-01 | 2005-05-03 | 2005-11-02 | $7700.00 | Window Closed / Lapsed |