Patent US6486245B1 successfully refreshed from Google Patents.
US6486245B1
Expired / Lapsed
US
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Self-arranging coating
Assignee: Nanogate Coating Systems GmbH
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Filing: 1997-11-06
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Granted: 2002-11-26
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Expires: 2017-11-06
Abstract
Abstract The invention relates to a coating composition, to a formulation comprising said coating composition, to methods of coating surfaces with the coating composition, and to articles coated with the coating composition. The coating composition is based on a complex of polyelectrolytes and oppositely charged surfactants. The surfactants contain fluorine bonded covalently to carbon atoms. The coating material imparts oleophobic and/or hydrophobic properties to various surfaces. The degree of hydrophobicity and other properties such as, for instance, gas or moisture permeation can be adjusted over a wide range. Through the use of additives, the coating can be executed as a permanent or temporary coating. The readily variable profile of properties, the uncomplicated application, and the low coat thickness result in a wide scope for application as, for example, an antisoiling, antigraffiti or antiadhesion coating.
Inventors
- 👤 Andreas Thünemann
- 👤 Helmut Lochhaas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:05
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0081; B01D67/0088; C; C03; C03C; C03C17/00; C03C17/28; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C09; C09D; C09D5/00; C09D5/008; C09K; C09K3/00; C09K3/18; C23; C23C; C23C26/00; C23C30/00; D; D21; D21H; D21H11/00; D21H11/14; B05; B05D; B05D1/00; B05D1/18; B05D1/185
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
16 words
A complex comprising at least one nonhygroscopic polyelectrolyte and at least one oppositely charged fluorinated surfactant.
Claim 2
Dependent Claim
16 words
A complex comprising at least one nonhygroscopic polyelectrolyte and at least one oppositely charged fluorinated surfactant.
Claim 3
Dependent Claim
21 words
The complex as claimed in claim 1 , whose stoichiometry based on the charges of polyelectrolyte and surfactant is about 1:1.
Claim 4
Dependent Claim
17 words
The complex as claimed in claim 1 , which comprises a cationic polyelectrolyte and an anionic surfactant.
Claim 5
Dependent Claim
17 words
The complex as claimed in claim 1 , which comprises an anionic polyelectrolyte and a cationic surfactant.
Claim 6
Dependent Claim
34 words
The complex as claimed in claim 1 , which has a water absorption of not more than 5% (w/w), based on the weight of the complex, at 20° C. and 100% relative atmospheric humidity.
Claim 7
Dependent Claim
47 words
The complex as claimed in claim 1 , comprising a nonhygroscopic cationic polyelectrolyte selected from the group consisting of polymers containing at least one monomer unit selected from ethylenically unsaturated monomers which carry positively charged nitrogen groups, polyethyleneimines and alkyl-substituted polyethyleneimines; ionenes, and polysaccharides containing cationic groups.
Claim 8
Dependent Claim
29 words
The complex as claimed in claim 6 , wherein said cationic polyelectrolyte comprises at least one monomer unit which carries a quaternary ammonium group or an N-substituted heteroaromatic group.
Claim 9
Dependent Claim
17 words
The complex as claimed in claim 6 , wherein said cationic polyelectrolyte further comprises nonionic monomer units.
Claim 10
Dependent Claim
21 words
The complex as claimed in claim 6 , wherein said cationic polyelectrolyte comprises a copolymer of dialkenyldialkylammonium salts and nonionic monomers.
Claim 11
Dependent Claim
59 words
The complex as claimed in claim 1 , comprising a nonhygroscopic anionic polyelectrolyte selected from the group consisting of: polymers containing at least one monomer unit selected from ethylenically unsaturated carboxylic acids and also salts and derivatives thereof, ethylenically unsaturated monomers containing sulfonic acid groups, and ethylenically unsaturated monomers containing phosphinic, phosphonic or phosphoric acid groups, and anionic polysaccharides.
Claim 12
Dependent Claim
17 words
The complex as claimed in claim 10 , wherein said anionic polyelectrolyte further comprises nonionic monomer units.
Claim 13
Dependent Claim
40 words
The complex as claimed in claim 1 , comprising an anionic fluorinated surfactant selected from the group consisting of: fluorinated carboxylic acids, fluorinated sulfonic acids, fluorinated organosulfuric acids, fluorinated phosphinic, phosphonic and organophosphoric acids, and anionic derivatives or salts thereof.
Claim 14
Dependent Claim
68 words
The complex as claimed in claim 12 , wherein said anionic fluorinated surfactant is selected from the group consisting of: perfluorocarboxylic acids and salts thereof; partially fluorinated carboxylic acids and salts thereof; perfluorosultonic acids and salts thereof; partially fluorinated sulfonic acids and salts thereof; fluorinated phosphinic and phosphoric acids and salts thereof; fluorinated phosphoric acids and salts thereof, and fluorinated esters which carry at least one charged group.
Claim 15
Dependent Claim
20 words
The complex as claimed in claim 1 , comprising a cationic fluorinated surfactant selected from fluorinated amines and ammonium salts.
Claim 16
Dependent Claim
16 words
The complex as claimed in claim 1 , which further comprises at least one nonionic surfactant.
Claim 17
Dependent Claim
16 words
The complex as claimed in claim 15 , which comprises at least one nonionic fluorinated surfactant.
Claim 18
Dependent Claim
28 words
The complex as claimed in claim 15 , which comprises said nonionic surfactant in a proportion of up to 200% (w/w) based on the weight of the complex.
Claim 19
Dependent Claim
34 words
A method of preparing a complex as claimed in claim 1 , which comprises adding an aqueous solution of the polyelectrolyte to an aqueous solution of the fluorinated surfactant and isolating the resultant precipitate.
Claim 20
Independent Claim
29 words
A method of preparing a complex, which comprises adding the particular desired amount of nonionic surfactant to a complex as claimed in any of claims 1 to 7 .
Claim 21
Dependent Claim
19 words
A formulation which comprises a complex as claimed in claim 1 , in solution in a polar organic solvent.
Claim 22
Dependent Claim
22 words
The formulation as claimed in claim 20 , wherein said solvent is selected from methanol, ethanol, acetone, ethyl acetate, and mixtures thereof.
Claim 23
Dependent Claim
29 words
The formulation as claimed in claim 20 , wherein said complex is present in a proportion of from 0.1 to 30% (w/w) based on the weight of the solution.
Claim 24
Dependent Claim
17 words
A formulation which comprises a complex as claimed in claim 1 in emulsion in an aqueous solvent.
Claim 25
Dependent Claim
29 words
The formulation as claimed in claim 23 , wherein said complex is present in a proportion of from 0.1 to 30% (w/w) based on the weight of the emulsion.
Claim 26
Dependent Claim
19 words
The formulation in claim 24 , wherein said emulsion is stable for at least two weeks at 20° C.
Claim 27
Independent Claim
52 words
A method of preparing a formulation; which comprises adding the particular desired amount of a nonionic surfactant to a complex as claimed in any of claims 1 to 7 , converting the resulting mixture into a substantially homogeneous mixture, and diluting the mixture with water in order to obtain an aqueous emulsion.
Claim 28
Dependent Claim
22 words
A method of coating a surface, which comprises applying to said surface a formulation as claimed in claim 25 and drying it.
Claim 29
Dependent Claim
16 words
The method as claimed in claim 27 , wherein said applying takes place from a solution.
Claim 30
Dependent Claim
17 words
The method as claimed in claim 27 , wherein said applying takes place from an aqueous emulsion.
Claim 31
Dependent Claim
24 words
The method as claimed in claim 27 , wherein said applying takes place discontinuously or continuously by spraying, flow coating, dipping or mechanical application.
Claim 32
Dependent Claim
23 words
The method as claimed in claim 27 , wherein the coating is applied in a thickness of from 0.1 μm to 1 mm.
Claim 33
Dependent Claim
18 words
The method as claimed in claim 28 , wherein the drying time is not more than 1 hour.
Claim 34
Dependent Claim
18 words
The method as claimed in claim 29 , wherein the drying time is not more than 6 hours.
Claim 35
Dependent Claim
18 words
An article which is coated at least in part with a complex as claimed in claim 1 .
Claim 36
Dependent Claim
20 words
The article as claimed in claim 34 , wherein the coated surface has an energy of less than 20 mN/m.
Claim 37
Dependent Claim
14 words
The article as claimed in claim 35 , wherein the coating is substantially transparent.
Claim 38
Dependent Claim
17 words
The article as claimed in claim 34 , wherein the coating is permeable to air and/or moisture.
Claim 39
Dependent Claim
19 words
The article as claimed in claim 34 , wherein the coating is stable on contact with a water-containing atmosphere.
Claim 40
Dependent Claim
20 words
The article as claimed in claim 34 , wherein the coating is stable up to a temperature of 100° C.
Claim 41
Dependent Claim
21 words
The article as claimed in claim 34 , wherein the coating is enriched with fluorine at the surface facing the surroundings.
Claim 42
Dependent Claim
36 words
The article as claimed in claim 34 , wherein the coating has a water absorption of not more than 5% (w/w), based on the weight of the complex, at 20° C. and 100% relative atmospheric humidity.
Claim 43
Dependent Claim
20 words
A complex comprising at least one polyelectrolyte, at least one oppositely charged fluorinated surfactant and at least one non-ionic surfactant.
Claim 44
Dependent Claim
20 words
A complex comprising at least one polyelectrolyte, at least one oppositely charged fluorinated surfactant and at least one non-ionic surfactant.
Claim 45
Dependent Claim
31 words
A method of preparing the complex of claim 42 , comprising adding an aqueous solution of the polyelectrolyte to an aqueous solution of the fluorinated surfactant and isolating the resultant precipitate.
Claim 46
Independent Claim
45 words
A method of preparing a complex comprising at least one polyelectrolyte, at least one oppositely charged fluorinated surfactant and at least one nonionic surfactant comprising adding an nonionic surfactant to a complex comprising at least one polyelectrolyte and at least one oppositely charged fluorinated surfactant.
Claim 47
Independent Claim
45 words
A method of preparing a complex comprising at least one polyelectrolyte, at least one oppositely charged fluorinated surfactant and at least one nonionic surfactant comprising adding an nonionic surfactant to a complex comprising at least one polyelectrolyte and at least one oppositely charged fluorinated surfactant.
Claim 48
Dependent Claim
16 words
A formulation which comprises the complex of claim 42 in solution in a polar organic solvent.
Claim 49
Dependent Claim
24 words
A formulation which comprises complex comprising at least one polyelectrolyte and at least one oppositely charged fluorinated surfactant in emulsion in an aqueous solvent.
Claim 50
Dependent Claim
24 words
A formulation which comprises complex comprising at least one polyelectrolyte and at least one oppositely charged fluorinated surfactant in emulsion in an aqueous solvent.
Claim 51
Independent Claim
49 words
A method of preparing a formulation comprising adding an nonionic surfactant to a complex comprising at least one polyelectrolyte and at least one oppositely charged fluorinated surfactant, converting the resulting mixture into a substantially homogeneous mixture, and diluting the mixture with water in order to obtain an aqueous emulsion.
Claim 52
Independent Claim
49 words
A method of preparing a formulation comprising adding an nonionic surfactant to a complex comprising at least one polyelectrolyte and at least one oppositely charged fluorinated surfactant, converting the resulting mixture into a substantially homogeneous mixture, and diluting the mixture with water in order to obtain an aqueous emulsion.
Claim 53
Dependent Claim
13 words
An article having a surface coated with the complex of claim 42 .
Claim 54
Dependent Claim
17 words
A method of coating a surface comprising coating a surface with the complex of claim 42 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-11-25 | 2006-05-27 | 2006-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-11-25 | 2010-05-27 | 2010-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-11-25 | 2014-05-27 | 2014-11-26 | $7700.00 | Window Closed / Lapsed |