Patent ID: 6903157
Filing Date: 2005-06-07
Classification: C09D

Abstract:
1. A thickened aqueous coating composition of a chosen pH comprising: a polymeric binder; a macromolecular thickener comprising: a) macromolecules having moieties which are hydrophilic at the chosen pH; b) wherein the thickener on dispersion in water at a concentration of 2 wt %, based on the combined weights of the thickener and water, has a low shear viscosity of at least 0.1 Pa.sec when measured at 18° C. on a Brookfield viscometer using a No. 3 Spindle rotating at 12 rpm; wherein the macromolecules also contain autoxidisable moieties thereby creating an autoxidisable thickener; and wherein the number of average particle size of the thickener is below 500 nm.