Patent ID: 6465556
Filing Date: 2002-10-15
Classification: B27K,C08F,C08K,C08L,C09K

Abstract:
An aqueous latex composition for coating or impregnating a substrate to impart water repellent properties to the substrate, the aqueous latex composition being a polymer dispersion comprising:(a) water; (b) a crosslinkable surface active agent which is the reaction product of (i) one or more carboxylic fatty acids and (ii) one or more polyfunctional aromatic or aliphatic amines selected from the group consisting of 2-amino-2-ethyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, and tris(hydroxymethyl)aminomethane; (c) an in-situ formed polymer of one or more ethylenically unsaturated monomers capable of polymerizing in an aqueous environment, the in-situ formed polymer having been formed by polymerizing the one or more ethylenically unsaturated monomers in the presence of components (a) and (b) and a polymerization initiator, the ethylenically unsaturated monomers being selected from the group consisting of (meth)acrylic based esters, methyl methacrylate, butyl acrylate, 2-hydroxyethyl methacrylate, butyl methacrylate, 2-ethylhexyl acrylate, acrylonitrile, styrene, divinylbenzene, vinyl acetate, acrylamide, methacrylamide, vinylidene chloride and butadiene; and (d) a water soluble or water dispersible metal complex crosslinking agent comprising ammonium zirconium carbonate.