Patent ID: 9546299
Date: 2017-01-17
CPC Classifications: C08K,C09D,Y10T

Claim:
1. A coating composition for the application of superhydrophobic and oleophobic coatings on surfaces comprising: a polyurethane dispersion (PUD) comprising one or more of a polyester urethane, a polyacrylic urethane and/or a polycarbonate urethane; and about 5 to about 30% by weight of second particles comprising one or more siloxanes, and/or one or more alkyl, haloalkyl, fluoroalkyl, or perfluoroalkyl containing moieties; said composition optionally comprising up to about 26% by weight of third particles; wherein said coating composition comprises less than 0.3 pounds per gallon of volatile non-exempt organic compounds; and wherein the superhydrophobic and oleophobic coating resulting from the application of said composition to a surface retains its superhydrophobicity after 150-1,400 Taber abrasion cycles at a 1000 g load for a coating thickness range of 25-300 microns, and/or 100-2,500 Taber abrasion cycles at a 250 g load, using a CS10 wheel, as judged by the inability of more than 50% of the water droplets applied to the area of the coating subjected to said abrasion cycles to remain on the surface when the planar surface is inclined at 3 degrees.