US3972820A
Expired / Lapsed
US
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Fire extinguishing composition
Assignee: Dow Chemical Co
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Filing: 1973-12-20
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Granted: 1976-08-03
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Expires: 1993-12-20
Abstract
Abstract Disclosed is a novel fire extinguishing composition comprising a heat and gas producing pyrotechnic composition comprising a binder and an oxidizer, and having dispersed therein a halogen containing fire extinguishing agent. The pyrotechnic, when ignited, thermally disseminates the fire extinguishing agent onto the fire.
Inventors
- 👤 Harold E. Filter
- 👤 Don L. Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:01
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/06; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
81 words
A fire extinguishing composition comprising a solid mixture of: a. 25 to 85 weight percent a thermally disseminable halogen-containing compound possessing fire extinguishing ability selected from the group consisting of hexachlorobenzene, hexabromobenzene, perchloropentacyclodecane, ar-dibromotoluene, 1,2,3,4-tetrachlorodibromobutane, decabromodiphenyl oxide, tribromopentyl alcohol, ar-tetrabromo-x-diethyl benzene, ar-tetrabromo-o-xylene, octachloronaphthalene, pentachlorotoluene, 1,2,4,5-tetrabromobenzene, 1,2,4,5-tetrachlorobenzene, polybrominated naphthalenes, dibromotetrafluoroctane, 1,2-dibromo-1,1-dichloroethane, 1,2-dibromo-3-chloropropane, and ar-dibromoethylbenzene; b. 15 to 45 weight percent an oxidizer; and c. 3 to 50 weight percent a binder fuel; said halogen-containing compound being uniformly dispersed throughout the solid mixture.
Claim 2
Dependent Claim
81 words
A fire extinguishing composition comprising a solid mixture of: a. 25 to 85 weight percent a thermally disseminable halogen-containing compound possessing fire extinguishing ability selected from the group consisting of hexachlorobenzene, hexabromobenzene, perchloropentacyclodecane, ar-dibromotoluene, 1,2,3,4-tetrachlorodibromobutane, decabromodiphenyl oxide, tribromopentyl alcohol, ar-tetrabromo-x-diethyl benzene, ar-tetrabromo-o-xylene, octachloronaphthalene, pentachlorotoluene, 1,2,4,5-tetrabromobenzene, 1,2,4,5-tetrachlorobenzene, polybrominated naphthalenes, dibromotetrafluoroctane, 1,2-dibromo-1,1-dichloroethane, 1,2-dibromo-3-chloropropane, and ar-dibromoethylbenzene; b. 15 to 45 weight percent an oxidizer; and c. 3 to 50 weight percent a binder fuel; said halogen-containing compound being uniformly dispersed throughout the solid mixture.
Claim 3
Dependent Claim
45 words
The composition of claim 1 wherein the halogen containing compound comprises 35 to 60 weight per cent of the composition, the oxidizer comprises 20 to 35 weight per cent of the composition, and the binder comprises 3 to 35 weight per cent of the composition.
Claim 4
Dependent Claim
35 words
The composition of claim 1 further including a cure catalyst in an amount at least sufficient to have accelerated curing of the composition, but not in excess of about 2 weight percent of the composition.
Claim 5
Dependent Claim
19 words
The composition of claim 3 wherein the cure catalyst comprises up to about 0.5 weight percent of the composition.
Claim 6
Dependent Claim
21 words
The composition of claim 1 wherein the halogen containing compound is selected from the group consisting of hexachlorobenzene, hexabromobenzene and perchloropentacyclodecane.
Claim 7
Dependent Claim
24 words
The composition of claim 1 wherein the oxidizer is selected from the group consisting of sodium chlorate, potassium chlorate, sodium perchlorate and potassium perchlorate.
Claim 8
Independent Claim
105 words
A method of extinguishing a fire comprising: a. providing a solid mixture comprised of, by weight, i. 25 to 85 percent a thermally disseminable halogen-containing compound possessing fire extinguishing ability, ii. 15 to 45 percent an oxidizer, and iii. 3 to 50 percent a binder fuel, said oxidizer and binder fuel being selected and provided in proportions such that the temperature of the burning composition is sufficient to vaporize but not ignite or decompose said halogen-containing compound, b. thermally disseminating the halogen-containing compound by igniting said solid mixture, and c. distributing a fire extinguishing amount of the thermally disseminated halogen-containing compound over the fire area.
Claim 9
Independent Claim
105 words
A method of extinguishing a fire comprising: a. providing a solid mixture comprised of, by weight, i. 25 to 85 percent a thermally disseminable halogen-containing compound possessing fire extinguishing ability, ii. 15 to 45 percent an oxidizer, and iii. 3 to 50 percent a binder fuel, said oxidizer and binder fuel being selected and provided in proportions such that the temperature of the burning composition is sufficient to vaporize but not ignite or decompose said halogen-containing compound, b. thermally disseminating the halogen-containing compound by igniting said solid mixture, and c. distributing a fire extinguishing amount of the thermally disseminated halogen-containing compound over the fire area.
Claim 10
Dependent Claim
39 words
The method of claim 7 wherein the halogen-containing compound is selected from the group consisting of hexachlorobenzene, hexabromobenzene, perchloropentacyclodecane, ar-dibromotoluene, 1,2,3,4-tetrachlorodibromobutane, decabromodiphenyl oxide, tribromopentyl alcohol, ar-tetrabromo-x-diethyl benzene, ar-tetrabromo-o-xylene, octachloronaphthalene, pentachlorotoluene, 1,2,4,5-tetrabromobenzene, 1,2,4,5-tetrachlorobenzene, polybrominated naphthalenes, dibromotetrafluoroctane, 1,2-dibromo-1,1-dichloroethane, 1,2-dibromo-3-chloropropane, and ar-dibromoethylbenzene.
Claim 11
Dependent Claim
14 words
The method of claim 8 wherein the halogen-containing compound is hexachlorobenzene, hexabromobenzene, or perchloropentacyclodecane.
Claim 12
Dependent Claim
18 words
The method of claim 7 wherein the oxidizer is sodium chlorate, potassium chlorate, sodium perchlorate, or potassium perchlorate.
Claim 13
Dependent Claim
40 words
The method of claim 7 wherein, by weight, the halogen-containing compound comprises 35 to 60 percent of the composition, the oxidizer comprises 20 to 35 percent of the composition, and the binder comprises 3 to 35 percent of the composition.
Claim 14
Dependent Claim
40 words
The method of claim 7 wherein the solid mixture includes a cure catalyst in an amount at least sufficient to have accelerated the curing of the composition, but not in excess of about 2 weight percent of the solid mixture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |