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US 12,410,610 B2Granted
Flame retardant clear coatings for building panels
AssigneeAWI Licensing LLC
InventorsJohn E. Hughes, Michelle X. Wang
Life of this patent
Estimating the term…
Abstract
The present invention is directed to a flame retardant coating, the flame retardant coating comprising aluminum carbonate, triethanolamine, and a blend of a borate compound and a phosphate compound. The coating is optically transparent.
Claims14
A flame-retardant coating composition comprising:
- a coating comprising a first sub-layer, a second sub-layer atop the first sub-layer, and a third sub-layer atop the second sub-layer;
- wherein the first sub-layer is an organic coating and comprises polymer produced from unsaturated monomers and the second sub-layer is an inorganic coating comprising aluminum carbonate, triethanolamine, and a blend of a first borate compound and a first phosphate compound;
- wherein the aluminum carbonate is present in an amount of about 2.8 to about 4.8 wt. %;
- wherein a weight ratio of first phosphate compound to the first borate compound within the second sub-layer is from about 5:1 to about 80:1;
- wherein the third sub-layer is an inorganic coating composition comprising triethanolamine, a second borate compound, and a second phosphate compound;
- and
- wherein the second borate compound is zinc borate and the first borate compound is boron trioxide.
4 more elements
A flame-retardant coating composition comprising:
- a coating comprising a first sub-layer, a second sub-layer atop the first sub-layer, and a third sub-layer atop the second sub-layer;
- wherein the second sub-layer comprises an inorganic component comprising aluminum carbonate, triethanolamine, a filler comprising magnesium carbonate and calcium carbonate, and a blend of a first borate compound and a first phosphate compound comprising phosphoric acid;
- wherein the third sub-layer comprises a second inorganic component comprising triethanolamine, magnesium carbonate, and a blend of a second borate compound that is different from the first borate compound and a second phosphate compound;
- wherein the aluminum carbonate is present in an amount from about 2.8 to about 4.8 wt. %;
- wherein the coating composition has a maximum pH of 5 and comprises up to about 5.0 wt. % of organic components based on the total weight of the coating composition;
- wherein the composition is free of carrier;
- wherein the first borate compound is boron trioxide and the second borate compound is zinc borate;
- wherein a weight ratio of phosphate to the borate compound within the inorganic component of the second sub-layer is from about 5:1 to about 80:1;
- wherein the flame-retardant coating composition is optically transparent.
6 more elements
Dependencies are inferred from the claim text.