Hydrophobic permanent coatings on substrates and methods for production thereof
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United States of America Patent
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Nov 28, 2006
Grant Date -
Jul 1, 2004
app pub date -
Apr 19, 2002
filing date -
Apr 25, 2001
priority date (Note) -
Expired
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Abstract
The invention is used in the field of chemistry and relates to coatings which can be used, for example, for the production of paint films, and a method for production thereof.The object of the invention is to describe permanent coatings with hydrophobic to ultrahydrophobic properties.The object is attained by hydrophobic permanent coatings of a crosslinked layer of a hardener component (A) and resin component (B), whereby (A) and/or (B) comprise chemically coupled lateral and/or terminal perfluoroalkyl groups with at least one trifluoromethyl end group, with a coupling between the layer and the surface region of the substrate.The object is further attained with a method in which the coating agent containing perfluoroalkyl groups is applied to a surface in the form of a melt, powder, dispersion or solution, with input of energy a film formation is carried out in one or more stages with or without a partial cross-linking and at least one partial coupling and subsequently again with input of energy a complete cross-linking of the layer is carried out.
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