High solids edge coatings for building panels
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.
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.