Fire-retardant compositions and their uses
AssigneePerimeter Solutions LP
InventorsUrvashi Khosla, Howard L. Vandersall, Melissa R. Kim
Life of this patent
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Abstract
Disclosed are fire-retardant concentrates and solutions comprising mixtures of ammonium phosphates. In certain embodiments, less of the concentrate is needed to form an effective fire-retardant solution. In certain embodiments, the fire-retardant solutions exhibit decreased corrosion, especially with regard to magnesium. In certain embodiments, the fire-retardant solutions exhibit decreased aquatic toxicity.
Claims30
A fire-retardant concentrate composition comprising a mixture of ammonium phosphates and a corrosion inhibitor system that comprises at least one biopolymer, wherein the mixture of ammonium phosphates has a molar ratio of ammoniacal nitrogen to phosphorus (N/P molar ratio) in a range of from 1.4 to about 1.9, and wherein when the concentrate is mixed at a ratio of from about 0.9 to about 1.3 pounds of the concentrate per 1.0 gallon of water, the resulting aqueous solution exhibits a magnesium alloy corrosion rate equal to or less than 4.0 milli-inches per year.
A fire-retardant concentrate composition comprising a mixture of ammonium phosphates and a corrosion inhibitor system that comprises a biopolymer selected from the group consisting of xanthan gum, rhamsan gum, welan gum, diutan gum, and mixtures thereof, wherein the mixture of ammonium phosphates has a molar ratio of ammoniacal nitrogen to phosphorus (N/P molar ratio) in a range of from about 1.1 to about 1.9, and wherein when the concentrate is mixed at a ratio of from about 0.9 to about 1.3 pounds of the concentrate per 1.0 gallon of water, the resulting aqueous solution exhibits a magnesium alloy corrosion rate equal to or less than 4.0 milli-inches per year.
Dependencies are inferred from the claim text.