VOC and odor reducing coating composition

Patent metadata

Field	Value
Publication number	US-11014066-B2
Application number	US-202016993786-A
Country	US
Kind code	B2
Filing date	Aug 14, 2020
Priority date	Dec 15, 2015
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

Described herein is a building panel comprising a substrate and an odor and VOC reducing 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.

First claim

What is claimed is:

1. A coating composition for reducing VOC and odors, the coating composition comprising:
a solid component comprising a blend of;
ethylene urea;
silica gel;
porous CaCO 3 ; and

a liquid carrier comprising water.

2. The coating composition according to claim 1 , wherein the porous CaCO 3 has a surface area ranging from about 120 m 2 /g to about 160 m 2 /g, optionally about 144 m 2 /g.

3. The coating composition according to claim 1 , wherein the liquid carrier is present in an amount ranging from about 25 wt. % to about 75 wt. %, based on the total weight of the coating composition.

4. The coating composition according to claim 1 , wherein the solid component further comprises a rheology modifier selected from silicate mineral, alkali-swellable compounds, and combinations thereof, optionally present in an amount ranging from about 0.5 wt. % to about 55 wt. %, based on the total weight of the solid component.

5. The coating composition according to claim 1 , wherein the silica gel has a particle size ranging from about 0.5 μm to about 120 μm.

6. The coating composition according to claim 1 , 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 solid component.

7. The coating composition according to claim 1 , wherein the ethylene urea and the silica gel are present in a weight ratio ranging from about 1:1 to about 1:8.

8. The coating composition according to claim 1 , wherein the coating composition comprises a first surfactant and a second surfactant, and wherein the first surfactant is non-ionic and the second surfactant is ionic.

9. A coating composition for reducing VOC and odors, the coating composition comprising:
a solid component comprising a blend of
silica gel;
a surfactant;
a rheology modifier;
porous CaCO 3 ; and

a liquid carrier comprising water.

10. The coating composition according to claim 9 , wherein the carrier is present in an amount ranging from about 25 wt. % to about 75 wt. %, based on the total weight of the coating composition.

11. The coating composition according to claim 9 , wherein the silica gel has a particle size ranging from about 0.5 μm to about 120 μm.

12. The coating composition according to claim 9 , 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 solid component.

13. The coating composition according to claim 9 , wherein the rheology modifier is selected from silicate mineral, alkali-swellable compounds, and combinations thereof.

14. The coating composition according to claim 9 , 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 solid component.

15. The coating composition according to claim 12 , wherein the surfactant is present in an amount ranging from about 0.1 wt. % to about 17.0 wt. %, based on the total weight of the dry component.

16. The coating composition according to claim 12 , wherein the surfactant is non-ionic and is optionally present in an amount ranging from about 0.1 wt. % to about 0.5 wt. % based on the total weight of the dry component.

17. The coating composition according to claim 12 , wherein the surfactant is ionic and is optionally present in an amount ranging from about 1 wt. % to about 7 wt. % based on the total weight of the dry component.

18. The coating composition according to claim 12 , wherein the surfactant is an emulsifier that is present in an amount ranging from about 2 wt. % to about 12 wt. % based on the total weight of dry component.

19. The coating composition according to claim 12 , further comprising filler having a particle size ranging from about 0.1 μm to 300 μm.

20. The coating composition according to claim 12 , wherein the porous CaCO 3 has a surface area ranging from about 120 m 2 /g to about 160 m 2 /g—preferably about 144 m 2 /g.

Assignees

• Armstrong World Ind Inc
• Awi Licensing Llc

Inventors

• Caldwell Kenneth G
• Masia Steven L
• Sirdeshpande Gourish
• Wang Michelle X

Classifications

• E04B9/001

  characterised by provisions for heat or sound insulation · CPC title

• B01J20/22 Primary

  comprising organic material · CPC title

• B01J20/103

  comprising silica · CPC title

• B01J20/3236

  containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts · CPC title

• B01J20/3042

  Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent · CPC title