Claims
- 1. A thixotropic fire extinguishing composition of matter comprising:
- a nonpolar nonaqueous gelled liquid;
- an ammonium compound; and
- a polycarboxylated vinyl polymer having an average equivalent weight of about 76.+-.4; a molecular weight of from about 450,000 to about 4,000,000; a Brookfield viscosity (cP) in a range of from about 4,000 to 60,000 as measured on a 0.5% solution, and about 3,000 to 7,000 as measured on a 1% solution; said polycarboxylated vinyl polymer having the general structure ##STR3## and being present in an amount sufficient to gel said liquid.
- 2. A composition according to claim 1 wherein the gelled liquid comprises at least one fire-quenching liquified gas.
- 3. A composition according to claim 2 wherein the gelled liquid comprises a blend of difluorochlorobromethane and trifluorobromomethane.
- 4. A composition according to claim 3 wherein the blend comprises about 80 weight percent difluorochlorobromomethane and about 20 weight percent trifluorobromomethane.
- 5. A composition according to claim 1 wherein the gelled liquid comprises at least one fire-quenching liquid and at least one fire-quenching liquified gas.
- 6. A composition according to claim 2 or 5 wherein the fire-quenching liquified gas is selected from the group consisting of trifluorobromomethane, difluorochlorobromomethane, perfluoropropane, perfluorocylobutane, dichlorodifluoromethane, tetrafluoromethane, methyl bromide, trifluoromethane, trifluorochloromethane and hexafluoroethane.
- 7. A composition according to claim 1 wherein the gelled liquid comprises at least one fire-quenching liquid and at least one overpressurizing gas selected from the group consisting of nitrogen, carbon dioxide, helium, and argon.
- 8. A composition according to claim 5 or 7 wherein the fire-quenching liquid is selected from the group consisting of methylene bromide, methyl iodide, tetrafluorodibromoethane, trifluorotrichloroethane, fluorotrichloromethane, chloroform, bromoform and carbon tetrachloride.
- 9. A composition according to claim 1 wherein the ammonium compound is selected from the group consisting of monoammonium phosphate, diammonium phosphate, triammonium phosphate and ammonium calcium phosphate.
- 10. A composition according to claim 1 additionally containing one or more powders selected from the group consisting of sodium bicarbonate, potassium bicarbonate, sodium chloride and potassium chloride.
- 11. A composition according to claim 1 additionally containing from about 0.5 to 3.0 weight percent gelling adjuvant selected from the group consisting of aliphatic amines and fumed silicas.
- 12. A composition according to claim 1 containing about 70-30 weight percent gelled liquid, about 0.5-8.0 weight percent polycarboxylated vinyl polymer, and about 30-70 weight percent ammonium compound selected from the group consisting of monoammonium phosphate, diammonium phosphate, triammonium phosphate, and ammonium calcium phosphate.
- 13. A fire extinguishing composition comprising the composition of claim 1 containing about 70-30 weight percent liquified gas which is a blend of about 80 weight percent difluorochlorobromomethane and about 20 weight percent trifluorobromomethane, about 0.5-8 weight percent polycarboxylated vinyl polymer and about 35-50 weight percent monoammonium phosphate.
- 14. A composition according to claim 13 comprising about 55 weight percent of said liquified gas blend, about 41.5 weight percent monoammonium phosphate, and about 3.5 weight percent polycarboxylated vinyl polymer.
- 15. A method of extinguishing a fire by applying the composition of claim 7, 13, or 14 to the fire.
- 16. The composition according to claim 1 wherein he polycarboxylated vinyl polymer has an average molecular weight of about 1,250,000 and a Brookfield viscosity, cP, at 25.degree. C., 0.5% of 4,000-11,000.
- 17. The composition according to claim 1 wherein the polycarboxylated vinyl polymer has an average molecular weight of about 3,000,000 and a Brookfield viscosity, cP, at 25.degree. C., 0.5% of 30,500-39,400.
- 18. The composition according to claim 1 wherein he polycarboxylated vinyl polymer has an average molecular weight of about 4,000,000 and a Brookfield viscosity, cP, at 25.degree. C., 0.5% of 40,000-60,000.
- 19. The composition according to claim 1 wherein the polycarboxylated vinyl polymer has an average molecular weight of about 750,000 and a Brookfield viscosity, cP, at 25.degree. C., 0.5% of 3,000-7,000.
Parent Case Info
This is a continuation, of application Ser. No. 701,650, filed Feb. 14, 1985, now abandoned, which is in turn a continuation of applicaton Ser. No. 506,485, filed June 21, 1983, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4226727 |
Tarpley, Jr. et al. |
Oct 1980 |
|
4226728 |
Kung |
Oct 1980 |
|
4234432 |
Tarpley, Jr. |
Nov 1980 |
|
Non-Patent Literature Citations (2)
Entry |
"Hydrophilic Polymers-Carbopol 910 Product Specification", B.F. Goodrich, (Mar. 1976). |
"Carbopol.RTM. Water Soluble Resins", BF Goodrich, p. 15 (GC-67), Sep. 1980. |
Continuations (2)
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Number |
Date |
Country |
Parent |
701650 |
Feb 1985 |
|
Parent |
506485 |
Jun 1983 |
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