Aqueous pigmented coating composition with improved open time comprising crosslinkable oligomer(s) and dispersed polymer(s)
AssigneeDsm IP Assets B.V.
InventorsRonald Tennebroek, Tijs Nabuurs, Gerardus Overbeek, Jan Bouman
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Abstract
An aqueous coating composition with an improved open time comprising (a) a crosslinkable water-dispersible oligomer(s); (b) a dispersed polymer(s), (c) a pigment(s) with an oil absorption number ≦25 g oil/100 g pigment and optionally (d) a Newtonian-like thickener(s) and (e) a thixotropic thickener(s) wherein the weight ratio of (a):(b) is in the range of from 10:90 to 60:40; wherein (d)+(e)=0.1 to 10 wt % and wherein said composition when drying to form a coating has a tack-free time of ≦24 hours.
Claims26
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 a pigment(s) with an oil absorption number ≦25 g oil/100 g pigment;
- d) 0 to 10 wt % of a Newtonian-like thickener(s);
- e) 0 to 10 wt % of a thixotropic thickener(s);
- 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;
- wherein d)+e)=0.1 to 10 wt % and wherein said composition when drying to form a coating has a tack-free time of ≦24 hours.
Dependencies are inferred from the claim text.