Patent ID: 6590028
Filing Date: 2003-07-08
Classification: C08F,C08G,C09D

Abstract:
A two-component polyurethane coating composition containing a binder which comprisesa) an aqueous solution and/or dispersion of a graft polymer prepared from at least two polyol components by covalently or adsorptively linking an elastomeric component a1) with a thermoplastic component a2), wherein the graft polymer contains hydroxyl groups and also sulfonate and/or carboxylate groups and components a1) and a2), are prepared from olefinically unsaturated monomers, and b) a polyisocyanate component, which has a viscosity of at the most 10,000 mPaÂ·s, contains at least one organic polyisocyanate and is emulsified or solubilized in aqueous component a), wherein components a) and b) are present at an NCO/OH equivalent ratio of 0.2:1 to 5:1.