Patent ID: 7569636

Claim:
An aqueous coating composition with an improved open time comprising: a) 1 to 35 wt % of a crosslinkable water-dispersible oligomer(s); b) 4 to 50 wt % of a dispersed polymer(s); c) 3 to 75 wt % of at least one pigment with an oil absorption number ≦25 g oil/100 g pigment; d) 0 to 10 wt % of at least one Newtonian-like thickener; e) 0 to 10 wt % of at least one thixotropic thickener; f) 0 to 20 wt % of co-solvent; g) 10 to 80 wt % of water; where a)+b)+c)+d)+e)+f)+g)=100%; wherein the weight ratio of a):b) is in the range of from 10:90 to 60:40; and wherein d)+e)=0.1 to 10 wt % and impart a shear ratio to the composition which is in the range of from 1 to 20 at a shear rate of 10 s −1 and 1,000 s −1 , and wherein the composition when drying to form a coating has a tack-free time of ≦24 hours.