FLAME SUPPRESSANT AEROSOL GENERANT

• US 20110155943A1
• Filed: 03/08/2011
• Published: 06/30/2011
• Est. Priority Date: 04/30/2004
• Status: Active Grant

• Current Assignee: Goodrich Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Goodrich Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Clark, Mark L., Posson, Philip L.
• Granted Patent: US 8,182,711 B2
• Time in Patent Office: Days
• US Class Current: 252/3
• CPC Class Codes: A62D 1/06 containing gas-producing, chemically-reactive components
• CPC Class Codes: Y10S 149/115 Organic fuel

Abstract

The present invention is directed to pyrotechnic aerosol fire suppression compositions that burn rapidly, but coolly. The rapid burning of the compositions of the present invention produces a voluminous flame-suppressive aerosol that is useful in suppressing and/or extinguishing both small and large fires. The compositions of the invention contain at least one oxidizer and a fuel component comprising at least one organic acid salt, which combination produces a rapid burning composition that burns at low temperatures with little or no flame and have a low heat of combustion.

Claims

1-20. -20. (canceled)

21. A pyrotechnic aerosol fire suppression composition comprising:

an oxidizer represented by the formula M(XO_x)_y, wherein M is selected from a Group IA atom, a Group IIA atom, and a Group IIIA atom, X is selected from the group consisting of Cl, Br and I, x is 1-4, and y is 1-3; and

a fuel component comprising melamine cyanurate, a Group IA or Group IIA salt of an organic acid, or a mixture thereof; and

wherein the oxidizer is present in a greater amount by weight percent than the fuel component, and wherein the composition has a heat of combustion of between about 250 calories per gram and 600 calories per gram.

22. The composition of claim 21, wherein the combustion products consist essentially of H₂O, CO₂, nitrogen, potassium bromide, and potassium carbonate by total weight of the combustion products.

23. The composition of claim 21, wherein M is selected from the group consisting of lithium, potassium, sodium, strontium, magnesium, and aluminum.

24. The composition of claim 21, wherein XO, is selected from the group consisting of a chlorate, a bromate, an iodate, a perchlorate, and a chlorite.

25. The composition of claim 24, wherein XO_x is a bromate.

26. The composition of claim 21, wherein M(XO_x)_y is selected from the group consisting of sodium bromate, potassium bromate, and mixtures thereof.

27. The composition of claim 21, wherein the heat of combustion of the pyrotechnic aerosol fire suppression composition is between about 300 calories per gram to about 500 calories per gram.

28. A pyrotechnic aerosol fire suppression composition comprising:

an oxidizer represented by the formula M(XO_x)_y, wherein M is selected from a Group IA atom, a Group IIA atom, and a Group IIIA atom, X is selected from the group consisting of Cl, Br and I, x is 1-4, and y is 1-3; and

a fuel component comprising melamine cyanurate, a Group IA or Group IIA salt of an organic acid, or a mixture thereof, and

wherein the oxidizer is present in a greater amount by weight percent than the fuel component, and wherein the combustion products are selected from the group consisting of H₂O, CO₂, nitrogen, a halide salt, a carbonate salt, and mixtures thereof.

29. The composition of claim 28, wherein the oxidizer is selected from the group consisting of sodium bromate, potassium bromate, and mixtures thereof, and the fuel component is selected from the group consisting of melamine cyanurate, potassium cyanurate, potassium isocyanurate, potassium hydroxyacetate, magnesium cyanurate, magnesium isocyanurate, magnesium hydroxyacetate, and mixtures thereof.

30. The composition of claim 28, wherein the composition has a heat of combustion between about 250 calories per gram and 600 calories per gram.

31. The composition of claim 30, wherein the heat of combustion is between about 300 calories per gram to about 500 calories per gram.

32. The composition of claim 31, wherein the heat of combustion is about 400 calories per gram to about 450 calories per gram.

33. The composition of claim 28, wherein the combustion products consist essentially of about 5 percent to about 15 percent H₂O, about 10 percent to about 30 percent CO₂, about 0.5 percent to about 15 percent nitrogen, about 40 percent to about 90 percent potassium bromide, and about 10 percent to about 30 percent potassium carbonate by total weight of the combustion products.

34. The composition of claim 28, wherein the oxidizer is present in an amount of about 70 percent or less by weight of the total composition.

35. The composition of claim 34, wherein the oxidizer is present in an amount of about 60 percent or less by weight of the total composition.

36. The composition of claim 28, wherein the fuel component is selected from the group consisting of melamine cyanurate, potassium cyanurate, potassium isocyanurate, potassium hydroxyacetate, magnesium cyanurate, magnesium isocyanurate, magnesium hydroxyacetate, and mixtures thereof.

37. A pyrotechnic aerosol fire suppression composition consisting essentially of:

an oxidizer; and

a fuel component, wherein the oxidizer is present in a greater amount by weight percent than the fuel component,

wherein the combustion products consist essentially of about 5 percent to about 15 percent H₂O, about 10 percent to about 30 percent CO₂, about 0.5 percent to about 15 percent nitrogen, about 40 percent to about 90 percent potassium bromide, and about 10 percent to about 30 percent potassium carbonate by total weight of the combustion products.

38. The composition of claim 37, wherein the oxidizer is selected from the group consisting of sodium bromate, potassium bromate, and mixtures thereof.

39. The composition of claim 38, wherein the fuel component is selected from the group consisting of melamine cyanurate, potassium cyanurate, potassium isocyanurate, potassium hydroxyacetate, magnesium cyanurate, magnesium isocyanurate, magnesium hydroxyacetate, and mixtures thereof.

40. The composition of claim 37, wherein the composition has a heat of combustion of between about 250 calories per gram and 600 calories per gram.