VOC and odor reducing building panels

1. A VOC and odor-reducing building panel comprising:

a substrate; and

a coating applied to the substrate, the coating comprising a blend of:

a first component comprising ethylene urea;

a second component comprising silica; and

a rheology modifier.

2. The building panel according to claim 1 , wherein the coating is solid at room temperature and comprises less than about 5 wt. % of a carrier based on the total weight of the coating, the carrier selected from water.

3. The building panel according to claim 1 , wherein the first component is present in an amount ranging from about 2 wt. % to about 20 wt. % based on the total weight of the coating.

4. The building panel according to claim 1 , wherein the second component is present in an amount ranging from about 5 wt. % to about 40 wt. % based on the total weight of the coating.

5. The building panel according to claim 1 , wherein the coating is present on the substrate in an amount ranging from about 50 g/m 2 to about 400 g/m 2 .

6. The building panel according to claim 1 , wherein the silica is silica gel.

7. The building panel according to claim 1 , wherein the rheology modifier selected from silicate mineral, alkali-swellable compounds, and combinations thereof.

8. The building panel according to claim 7 , wherein the rheology modifier is present in an amount ranging from about 0.1 wt. % to about 55 wt. % based on the total weight of the coating.

9. The building panel according to claim 1 , wherein the coating exhibits substantially the same odor-reducing performance in an environment having 90% relative humidity as an environment having at 0% relative humidity.

10. The building panel according to claim 1 , wherein the substrate is a porous structure and the building panel is an acoustical ceiling panel.

11. A VOC and odor-reducing building panel comprising:

a substrate; and

a coating applied to the substrate, the coating comprising an odor-reducing composition comprising a blend of ethylene urea and silica in a weight ratio ranging from about 1:1 to about 1:8;

wherein the coating is substantially solid at room temperature and comprises less than 5 wt. % of moisture based on the total weight of the coating.

12. The building panel according to claim 11 , wherein the coating further comprises inorganic particles selected from kaolin, calcium carbonate, and a combination thereof.

13. The building panel according to claim 12 , wherein the odor-reducing composition and inorganic particles are present in a weight ratio ranging from about 1:1 to about 1:3.

14. A VOC and odor-reducing building panel comprising:

a substrate; and

a coating applied to the substrate, the coating comprising:

silica gel;

a surfactant; and

a rheology modifier.

15. The building panel according to claim 14 , wherein the coating is solid at room temperature and comprises less than about 5 wt. % of a carrier based on the total weight of the coating, the carrier selected from water.

16. The building panel according to claim 14 , wherein the silica gel is present in an amount ranging from about 5 wt. % to about 40 wt. % based on the total weight of the coating.

17. The building panel according to claim 14 , wherein the coating is present on the substrate in an amount ranging from about 50 g/m 2 to about 400 g/m 2 .

18. The building panel according to claim 14 , wherein the coating exhibits substantially the same odor-reducing performance in an environment having 90% relative humidity as an environment having at 0% relative humidity.

19. The building panel according to claim 14 , wherein the rheology modifier selected from silicate mineral, alkali-swellable compounds, and combinations thereof.

20. The building panel according to claim 19 , wherein the rheology modifier is present in an amount ranging from about 0.1 wt. % to about 55 wt. % based on the total weight of the coating.