High solids edge coatings for building panels

Patent metadata

Field	Value
Publication number	US-12139641-B2
Application number	US-202117158614-A
Country	US
Kind code	B2
Filing date	Jan 26, 2021
Priority date	Aug 29, 2017
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

Described herein is a coating composition suitable for application to a building panel. The coating composition comprises inorganic pigment, liquid carrier, and a humectant comprising a first ester-containing compound. The liquid carrier may be present in an amount ranging from about 10 wt. % to about 30 wt. % based on the total weight of the coating composition. Described herein are also building panels coated with the coating composition and methods of their production.

First claim

What is claimed is:

1. A coating composition comprising:
inorganic pigment;
liquid carrier; and
a humectant comprising a first ester-containing compound; and
wherein the liquid carrier is present in an amount ranging from about 10 wt. % to about 30 wt. % based on the total weight of the coating composition;
wherein the humectant is present in an amount ranging from about 0.25 wt. % to about 2.5 wt. % based on the total weight of the coating composition; and
wherein the humectant is a blend of the first ester-containing compound and a second ester-containing compound that is different from the first ester-containing compound.

2. The coating composition according to claim 1 , wherein first ester-containing compound is a carbohydrate based ester.

3. The coating composition according to claim 1 , wherein the second ester containing compound is a keto-acid based ester.

4. The coating composition according to claim 1 , wherein the second ester is the reaction product of acetoacetic acid and a mono-functional alcohol having a C1-C12 carbon chain.

5. The coating composition according to claim 1 , wherein the surface coating further comprises a polymeric binder in an amount ranging from about 1 wt. % to about 20 wt. % based on the total weight of the coating composition.

6. The coating composition according to claim 1 , wherein the surface coating further comprises a wetting agent present in an amount ranging from about 0.1 wt. % to about 2.6 wt. % based on the total weight of the coating composition.

7. The coating composition according to claim 1 , wherein the surface coating further comprises a dispersant present in an amount ranging from about 0.1 wt. % to about 2.0 wt. % based on the total weight of the coating composition.

8. A coating composition comprising:
inorganic pigment;
liquid carrier; and
a humectant comprising a first ester-containing compound that is non-ionic; and
wherein the liquid carrier is present in an amount ranging from about 10 wt. % to about 30 wt. % based on the total weight of the coating composition, wherein the first ester-containing compound is a carbohydrate based ester.

9. The coating composition according to claim 8 , wherein the humectant is present in an amount ranging from about 0.25 wt. % to about 2.5 wt. % based on the total weight of the coating composition.

10. The coating composition according to claim 8 , wherein the humectant is a blend of the first ester-containing compound and a second ester-containing compound that is different from the first ester-containing compound, wherein the second ester containing compound is a keto-acid based ester.

11. The coating composition according to claim 8 , wherein the surface coating further comprises a polymeric binder having a glass transition temperature ranging from about 15° C. to about 30° C.

12. A coating composition comprising:
inorganic pigment;
liquid carrier;
a wetting agent comprising three aromatic groups; and
a humectant comprising a first ester-containing compound;
wherein the liquid carrier is present in an amount ranging from about 10 wt. % to about 30 wt. % based on the total weight of the coating composition; and
wherein the humectant is hydrophobic.

13. The coating composition according to claim 12 , wherein the humectant is present in an amount ranging from about 0.25 wt. % to about 2.5 wt. % based on the total weight of the coating composition.

14. The coating composition according to claim 12 , wherein the first ester-containing compound is a carbohydrate based ester.

15. The coating composition according to claim 12 , wherein the humectant is a blend of the first ester-containing compound and a second ester-containing compound that is different from the first ester-containing compound.

16. The coating composition according to claim 15 , wherein the second ester containing compound is a keto-acid based ester.

17. The coating composition according to claim 12 , wherein the wetting agent is present in an amount ranging from about 0.1 wt. % to about 2.6 wt. % based on the total weight of the coating composition.

18. The coating composition according to claim 12 , wherein the surface coating further comprises a dispersant present in an amount ranging from about 0.1 wt. % to about 2.0 wt. % based on the total weight of the coating composition.

19. The coating composition according to claim 6 , wherein the wetting agent comprises three aromatic groups.

20. The coating composition according to claim 8 , further comprising a wetting agent present in an amount ranging from about 0.1 wt. % to about 2.6 wt. % based on the total weight of the coating composition.

Assignees

• Armstrong World Ind Inc
• Awi Licensing Llc

Inventors

• Hughes John E

Classifications

• E04B9/241

  with the slabs, panels, sheets or the like positioned on the upperside of the horizontal flanges of the supporting construction · CPC title

• C08K2201/005

  Additives being defined by their particle size in general · CPC title

• E04B9/0435

  having connection means at the edges · CPC title

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C08K3/013

  Fillers, pigments or reinforcing additives · CPC title