Patent ID: 8980437
Filing Date: 2015-03-17
Classification: B05D,Y10T

Abstract:
1. A method of coating a polymer foil, the method comprising applying a mixture to at least one side of the polymer foil, wherein the mixture comprises (i) an aqueous dispersion comprising a dispersed polyelectrolyte complex comprising a cationic polymer produced by water-in-water emulsion polymerization, wherein the cationic polymer is a polymer comprising a vinylimidazolium unit, a polymer comprising a vinylamine unit, a polymers comprising a dialkylaminoalkyl acrylate unit, a polymer comprising a dialkylaminoalkyl methacrylate unit, a polymer comprising a dialkylaminoalkylacrylamide unit, a polymer comprising a dialkylaminoalkyl methacrylamide unit, or a combination thereof; or (ii) a composition comprising a polyelectrolyte complex produced from an anionic polymer and a non-polymeric cationic surfactant, or applying at least three alternating layers to at least one side of the polymer foil, where a first layer of any two adjacent layers comprises an anionic polyelectrolyte component and a second layer of the two adjacent layers comprises a cationic polyelectrolyte component, and polyelectrolyte complexes can form at the interfaces of the at least three alternating layers, to obtain a coated polymer foil.