Building panel coatings
Described herein are panel coating compositions, building panel and a ceiling panel assembly having such coating compositions. The coating compositions are useful in obtaining stable and splotch-free finished paint on large panels.
1. A building panel coating composition comprising:
calcium carbonate;
aluminum hydroxide;
zinc borate;
a rheology modifier;
a defoamer;
a dispersing agent;
a whitening pigment, and an anionic wax emulsion; and
wherein the rheology modifier is non-ionic, water-soluble hydroxyethylcellulose surface-treated with glyoxal.
2. The building panel coating composition of claim 1 wherein the rheology modifier is present in an amount of about 0.002% to about 0.08% by weight of the composition.
3. The building panel coating composition of claim 1 wherein the defoamer is a polyether siloxane copolymer.
4. The building panel coating composition of claim 3 wherein the polyether siloxane copolymer comprises fumed silica.
5. The building panel coating composition of claim 1 wherein the defoamer is present in an amount of about 0.08% to about 0.3% by weight of the composition.
6. The building panel coating according to claim 1 , wherein the dispersing agent is a nonionic dispersant copolymer.
7. The building panel coating according to claim 1 , wherein the dispersing agent is present in an amount of about 1.0% to about 3.0% by weight of the composition.
8. The building panel coating composition according to claim 1 , wherein the whitening pigment is titanium dioxide.
9. The building panel coating composition according claim 1 , wherein the anionic wax emulsion comprises paraffin, polyethylene, or a combination thereof, wherein the anionic wax emulsion is present in an amount of about 5% to about 30% by weight of the composition.
10. A building panel comprising:
a body having an upper surface opposite a lower surface and at least one side surface extending between the upper surface and the lower surface;
a water repellant coating adjacent at least to the upper surface and lower surface, the water repellant coating comprising a building panel coating comprising:
calcium carbonate;
aluminum hydroxide;
zinc borate;
a rheology modifier;
a defoamer;
a dispersing agent;
a whitening pigment, and an anionic wax emulsion; and
wherein the building panel has a length and a width, the length is at least 6 ft and the width is at least 3 ft.
11. The building panel according to claim 10 , wherein the body comprises any one of fiberboard, wood, metal, brick, plastic, fabric, fibrous sheet, glass, ceramic, concrete, plastic film/sheet, paper, fiberglass, mineral fiber sheet, drywall.
12. The building panel according to claim 10 , wherein the length of the building panel is at least 3.5 ft and the width of the building panel is at least 7 ft.
13. A coating composition comprising:
a liquid carrier; and
a solid blend comprising:
calcium carbonate;
aluminum hydroxide;
zinc borate;
a rheology modifier;
a defoamer;
a dispersing agent;
a pigment;
and an anionic wax emulsion; and
wherein the liquid carrier is present in an amount ranging from 5 wt. % to 45 wt. % based on the total weight of the coating composition.
14. The coating composition of claim 13 wherein the rheology modifier is non-ionic, water-soluble hydroxyethylcellulose surface-treated with glyoxal.
15. The coating composition of claim 13 wherein the defoamer is a polyether siloxane copolymer.
16. The coating composition according to claim 13 , wherein the dispersing agent is a nonionic dispersant copolymer present in an amount of about 1.0% to about 3.0% by weight of the solid blend.
17. The coating composition according to claim 13 , wherein the pigment is titanium dioxide.
18. The coating composition according to claim 13 , wherein the anionic wax emulsion comprises paraffin, polyethylene, or a combination thereof.
19. A method of coating a building panel substrate comprising:
a) applying the coating composition according claim 13 to a substrate; and
b) drying the coating composition such that the liquid carrier is removed from the substrate.