Combustible fire suppressant aerosol composition

Patent metadata

Field	Value
Publication number	US-2016107012-A1
Application number	US-201414515830-A
Country	US
Kind code	A1
Filing date	Oct 16, 2014
Priority date	Oct 16, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

A composition is disclosed including an oxidizer represented by the formula M 1 (X 1 O y ) z , wherein M 1 is selected from a Group IA atom, and Group IIA atom, and a Group IIIA atom, X is selected from the group consisting of Cl, Br, I, y is 1-4, and z is 1-3, a fuel, and a hydrated salt or a combination of 2 or more hydrated salts having a dehydration decomposition temperature of greater than 200° C., represented by the formula (M 2 ) k (M 3 ) m (X 2 ) n (X 3 ) o .(H 2 O) p , where M 2 is selected from a Group IA atom, Group IIA atom, Group IIIA atom, M 3 is selected from a Group IIA atom, Group IIIA, and a transition atom, X 2 is a hydroxyl anion, X 3 is a carbonate anion, k, m, n, and o are each independently integers that balance the charges of M 2 , M 3 , X 2 , and X 3 and p is a number greater than or equal to 1.

First claim

1 . A combustible fire-suppressant aerosol composition, comprising:
an oxidizer represented by the formula M 1 (X 1 O y ) z , wherein M 1 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, y is 1-4, and z is 1-3; a fuel; and a hydrated salt having a dehydration decomposition temperature greater than 200° C., represented by the formula (M 2 ) k (M 3 ) m (X 2 ) n (X 3 ) o .(H 2 O) p , where M 2 is selected from a Group IA atom, Group IIA atom, Group IIIA atom, M 3 is selected from a Group IIA atom, Group IIIA, and a transition atom, X 2 is a hydroxyl anion, X 3 is a carbonate anion, k, m, n, and o are each independently integers that balance the charges of M 2 , M 3 , X 2 , and X 3 and p is a number greater than or equal to 1.

2 . The composition of claim 1 , wherein the hydrated salt has a dehydration decomposition temperature greater than 260° C.

3 . The composition of claim 2 , wherein the hydrated salt has a dehydration decomposition temperature greater than 260° C. and less than 600° C.

4 . The composition of claim 1 , wherein p is a number of 1 to 40.

5 . The composition of claim 4 , wherein p is a number of 1 to 20.

6 . The composition of claim 1 , wherein M 2 and M 3 are each independently selected from magnesium, calcium, Aluminum, and iron cations, and X 2 and X 3 are each independently selected from hydroxide, carbonate, and sulfate anions.

7 . The composition of claim 1 , wherein hydrated salt comprises artinite, hydrotalcite, hydromagnesite, dypingite, giorgiosite, and protomagnesite or mixtures thereof.

8 . The composition of claim 1 , wherein M 1 is lithium, potassium, sodium, strontium, magnesium, or aluminum, and X 1 O y , is chlorate, bromate, iodate, perchlorate, and or chlorite.

9 . The composition of claim 1 , wherein the oxidizer comprises sodium bromate, potassium bromate, or a mixture thereof.

10 . The composition of claim 1 , wherein the fuel comprises melamine cyanurate, potassium cyanurate, potassium isocyanurate, potassium hydroxyacetate, magnesium cyanurate, magnesium isocyanurate, magnesium hydroxyacetate, or a mixture comprising one or more of the foregoing.

11 . The composition of claim 1 , wherein the weight ratio of the oxidizer to the fuel is from 3:2 to 10:1.

12 . The composition of claim 1 , comprising from 45 wt. % to 90 wt. % of the oxidizer, from 7 wt. % to 40 wt. % of the fuel, and from 12 wt. % to 45 wt. % of the hydrated salt.

13 . The composition of claim 1 , comprising from 57 wt. % to 86 wt. % of the oxidizer, from 10 wt. % to 30 wt. % of the fuel, and from 15 wt. % to 42 wt. % of the hydrated salt.

14 . A method of discharging an aerosol flame suppressant, comprising:
combusting, in an enclosed vessel comprising at least one discharge opening, a composition comprising an oxidizer represented by the formula M 1 (X 1 O y ) z , wherein M 1 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, y is 1-4, and z is 1-3, a fuel, and a hydrated salt having a dehydration decomposition temperature greater than 200° C., represented by the formula (M 2 ) k (M 3 ) m (X 2 ) n (X 3 ) o .(H 2 O) p , where M 2 is selected from a Group IA atom, Group IIA atom, Group IIIA atom, M 3 is selected from a Group IIA atom, Group IIIA, and a transition atom, X 2 is a hydroxyl anion, X 3 is a carbonate anion, k, m, n, and o are each independently integers that balance the charges of M 2 , M 3 , X 2 , and X 3 and p is a number greater than or equal to 1; and discharging combustion products produced by combustion of the composition as an aerosol through the discharge opening.

15 . The method of claim 14 , wherein at least a portion of the combustion of the composition occurs at a temperature of 260° C. to 538° C.

Assignees

• Goodrich Corp

Inventors

• Reimer Karl G

Classifications

• A62C5/006 Primary

  Extinguishants produced by combustion · CPC title

• A62D1/06

  containing gas-producing, chemically-reactive components · CPC title