Back to results
US 12,428,345 B2Granted
Fire retardant construction materials
AssigneeNorth American MGO, LLC.
InventorFutong Cui
Life of this patent
Estimating the term…
Abstract
This application relates to making magnesium oxychloride boards. A magnesium oxychloride slurry is mixed by directing magnesium chloride, magnesium oxide, at least one phosphate, at least one inorganic salt, and water into a mixer and mixing these ingredients together to form a slurry. At least one filler is then mixed with the slurry. The slurry is directed to a mold. The mold is formed with the slurry to form a magnesium oxychloride board. The magnesium oxychloride board is then cured.
Claims24
A MOC formulation comprising:
- a slurry comprising magnesium oxide;
- magnesium chloride;
- water;
- and
- a low density filler selected from perlite, vermiculite, cenospheres, hollow glass spheres, or combinations thereof, said low density filler coated with at least one water repelling layer coating selected from at least partially cured magnesium oxychloride slurry that had been prepared 30-120 minutes before coating the low density filler, an at least partially cured geopolymer, or combinations thereof.
2 more elements
A magnesia cement formulation slurry comprising:
- a) the precursors of magnesium oxychloride cement, magnesium oxysulfate cement, magnesium phosphate cement, or mixtures thereof;
- and
- b) a filler selected from perlite, vermiculite, cenospheres, hollow glass spheres, or combinations thereof, at least one of said filler being previously encapsulated with a coating comprising i) a cured or at least partially cured magnesia cement, ii) a cured or at least partially cured geopolymer, iii) a layer of water repellant material, or combinations thereof.
A magnesia cement formulation slurry comprising:
- a) the precursors of magnesium oxychloride cement, magnesium oxysulfate cement, magnesium phosphate cement, or mixtures thereof, and
- b) a low density filler selected from perlite, expanded perlite, vermiculite, expanded vermiculite, cenospheres, hollow glass spheres, or combinations thereof, said low density filler comprising 10 to 25% by weight of the cured formulation by weight, and said low density filler being previously coated with a water repellant comprising a silicone, silane, acrylic, silicone modified acrylic, waxes, and combinations thereof in an amount sufficient to have low water absorption.
Dependencies are inferred from the claim text.