U.S. 8,187,707 B2
DSM IP Assets B.V. has been awarded a patent for a coated substrate comprised of a substrate and a superhydrophobic film or coating on the substrate, wherein the superhydrophobic film or coating has a static water contact angle above 140° and is comprised of a layer comprised of raspberry particles, wherein the raspberry particles is comprised of primary particles, and secondary particles, adhered to a surface of the primary particles by covalent chemical bonds and having an average diameter that is smaller than an average diameter of the primary particles, and a hydrophobic upper surface layer covering at least partly a surface of the secondary particles and adhered to the surface of the secondary particles, the upper surface layer having a thickness of from 1 nm to three times the average diameter of the primary particles, wherein the primary particles or the secondary particles are adhered to the substrate by covalent chemical bonds.
DSM Patents Hydrophobic Coating
Published January 15, 2013
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