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US 6,486,245 B1Granted
Self-arranging coating
AssigneeNanogate Technologies GmbH
InventorsAndreas Thünemann, Helmut Lochhaas
Life of this patent
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AssigneeNanogate Technologies GmbH
InventorsAndreas Thünemann, Helmut Lochhaas
Estimating the term…
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.
A complex comprising at least one nonhygroscopic polyelectrolyte and at least one oppositely charged fluorinated surfactant.
A complex comprising at least one polyelectrolyte, at least one oppositely charged fluorinated surfactant and at least one non-ionic surfactant.
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.
A formulation which comprises complex comprising at least one polyelectrolyte and at least one oppositely charged fluorinated surfactant in emulsion in an aqueous solvent.
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.
Dependencies are inferred from the claim text.