Patent ID: 7691933
Filing Date: 2010-04-06
Classification: C09D

Abstract:
1. An aqueous pigment paste that is stable, transportable, and storable for up to three months, comprising (A) from 15 to 40% by weight of at least one metal pigment, (B) from 0.45 to 0.75% by weight of at least one nonassociative thickener comprising at least one methacrylate copolymer based on C (C) from 0.1 to 0.4% by weight of at least one organic amine, (D) from 0.5 to 8% by weight of at least one nonionic surfactant, and (E) at least 50% by weight of water, based on total weight, wherein the aqueous pigment paste is free from binders, including grinding resins used for dispersing pigments, wherein the aqueous pigment paste is usable for producing an aqueous coating material by mixing the aqueous pigment paste with at least one aqueous mixing varnish comprising at least one water-soluble, water-dispersible, or water-soluble and water-dispersible binder.