Patent ID: 6660793
Filing Date: 2003-12-09
Classification: C09D

Abstract:
An aqueous coating composition comprising:(a) an aqueous carrier medium; (b) transparent iron pigment particles stabilized by (c) a mixture of pigment dispersants consisting essentially of (i) at least one acrylic copolymer dispersant having a hydrophilic stabilizing segment and acid groups in a hydrophobic adsorbing segment; (ii) at least one acrylic copolymer dispersant having a hydrophilic stabilizing segment and phosphate groups in a hydrophobic adsorbing segment; and (iii) optionally at least one acrylic copolymer dispersant having a hydrophilic stabilizing segment and alkyl amino groups in a hydrophobic adsorbing segment; (d) a film forming polymeric binder; and (e) a crosslinking agent for the binder.