Patent ID: 6153304
Filing Date: 2000-11-28
Classification: B05D,C04B,C09D,Y10T

Abstract:
A hydrophobic coating system for application to an inorganic, organic or metallic substrate comprising a primary coating comprising the residue obtained by drying a composition consisting essentially of an aqueous emulsion of(a)(i) a prepolymeric- or polymeric material for imparting hydrophobic, lubricous, and non-stick characteristics,(a)(ii) a prepolymeric- or polymeric material for imparting adhesion and hardness properties; and, optionally,(a)(iii) a curing agent for a prepolymeric material consisting essentially of a polyamine; and, optionally,(a)(iv) a pigment, wherein said cured, dried residue develops non-stick, hydrophobic or semi-hydrophobic, and hardness characteristics, and a surface energy in the range of from about 22 to about 28 dynes/cm.sup.2 ; anda top coating comprising(b)(i) a monomeric or polymeric siliconic materials adapted to provide a surface energy of from about 18 to about 21 dynes/cm.sup.2 ; and(b)(ii) interdigitating means for coupling said top coating to said primary coating, to thereby produce a permanent non-stick, foul-release and ice-phobic surface on said substrate.