US 11,041,063 B2 · Long-term fire retardant with an organophosphate and methods for making and using same

Abstract

A forest fire retardant composition is substantially free of ammonium and includes an organophosphate derived from (i) a phosphorylation agent and (ii) an organic molecule comprising at least two hydroxyl groups. The organophosphate may contain at least one phosphate ester bonded to an organic molecule, wherein the organic molecule comprises at least one monomer unit of about 2 to 40 carbon atoms. Preferably, at least 90% of the functional groups of the organophosphate is a phosphate ester group. The composition may also include a salt, including magnesium salt and/or calcium salt. The anion in the salt may be hydroxide, carbonate or phosphate. The salt may be an anhydrous salt, a salt hydrate, or a combination of both. The composition is effective in suppressing, retarding, and controlling forest fires while exhibiting corrosion resistance and low toxicity.

Claims28

Dependent claims

A forest fire retardant composition, comprising:

an organophosphate comprising at least one phosphate ester bonded to an organic molecule, wherein the organic molecule comprises at least one monomer unit of about 2 to about 40 carbon atoms;
a corrosion inhibitor;
and
a surfactant present in the forest fire retardant composition in a weight percent of about 0.02% to about 3% relative to the amount of organophosphate in the forest fire retardant composition;
wherein the surfactant comprises at least one of sodium dodecyl sulfate (SDS), sodium lauryl sulfate (SLS), sodium 4-dodecylbenzenesulfonate (SDBS), 4-dodecylbenzenesulfonic acid, sodium octyl sulfate, butylnapthalenesulfonic acid sodium salt, or potassium oleate;
and
wherein the composition is substantially free of ammonium;
and
wherein the organophosphate comprises poly(glycerol phosphate)n, where n is about 2 to about 5.

6 more elements

A forest fire retardant composition, comprising:

an organophosphate comprising poly(glycerol phosphate)n, where n is about 2 to about 5,
a corrosion inhibitor to inhibit the corrosion of at least one of iron, brass, or aluminum, present in the composition in an amount having a weight percent of about 0.5% to 4.5% relative to the weight of the organophosphate in the composition;
a salt comprising at least one of magnesium salt, calcium salt, or magnesium calcium salt, present in the composition in an amount having a weight percent of about 20% to about 80% relative to the weight of the organophosphate in the composition;
a buffering agent, present in the composition in an amount having a weight percent of about 0.25% to about 5.0% relative to the weight of the organophosphate in the composition;
a strong base, present in the composition in an amount having a weight percent of about 0.05% to about 3% relative to the weight of the organophosphate in the composition;
a viscosity modifier, present in the composition in an amount having a weight percent of about 0.05% to about 5.0% relative to the weight of the organophosphate in the composition;
a pigment, present in the composition in an amount having a weight percent of about 0.25% to about 10% relative to the weight of the organophosphate in the composition;
a dye, present in the composition in an amount having a weight percent of about 0.02% to about 3.0% relative to the weight of the organophosphate in the composition;
and
a surfactant, present in the composition in an amount having a weight percent of about 0.02% to about 3% relative to the weight of the organophosphate in the composition.

7 more elements

A forest fire retardant composition, comprising:

an organophosphate comprising poly(glycerol phosphate)n, where n is about 2 to about 5,
a corrosion inhibitor to inhibit the corrosion of at least one of iron, brass, or aluminum, present in the composition in an amount having a weight percent of about 0.5% to 4.5% relative to the weight of the organophosphate in the composition;
a strong base comprising at least one of magnesium hydroxide or calcium hydroxide, present in the composition in an amount having a weight percent of about 20% to about 60% relative to the weight of the organophosphate in the composition;
a buffering agent, present in the composition in an amount having a weight percent of about 0.25% to about 5.0% relative to the weight of the organophosphate in the composition;
a viscosity modifier, present in the composition in an amount having a weight percent of about 0.05% to about 5.0% relative to the weight of the organophosphate in the composition;
a pigment, present in the composition in an amount having a weight percent of about 0.25% to about 10% relative to the weight of the organophosphate in the composition;
a dye, present in the composition in an amount having a weight percent of about 0.02% to about 3.0% relative to the weight of the organophosphate in the composition;
and
a surfactant, present in the composition in an amount having a weight percent of about 0.02% to about 3% relative to the weight of the organophosphate in the composition.

6 more elements

Dependencies are inferred from the claim text.

Long-term fire retardant with an organophosphate and methods for making and using same

Life of this patent

Long-term fire retardant with an organophosphate and methods for making and using same

Life of this patent

Abstract

Claims28