×

Hydrophobic coating

  • US 8,187,707 B2
  • Filed: 05/22/2006
  • Issued: 05/29/2012
  • Est. Priority Date: 05/25/2005
  • Status: Expired due to Fees
First Claim
Patent Images

1. A coated substrate comprising 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 comprises;

    (1) a layer comprising raspberry particles, wherein the raspberry particles comprise,a) primary particles, andb) 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(2) 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, whereinthe primary particles or the secondary particles are adhered to the substrate by covalent chemical bonds.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×