Compositions are described that may be used for applications such as a fire extinguishing composition in fire extinguishing unit, refrigeration, and the like. These compositions include halocarbons and additives that may stabilize the composition in the presence of a metal, water, and/or air. For ex
Compositions are described that may be used for applications such as a fire extinguishing composition in fire extinguishing unit, refrigeration, and the like. These compositions include halocarbons and additives that may stabilize the composition in the presence of a metal, water, and/or air. For example, the compositions may include a bromofluorocarbon, such as a bromofluoroalkene, an acid scavenger stabilizer, and an antioxidant stabilizer.
대표청구항▼
1. A stabilized composition comprising: 2-bromo-3,3,3-trifluoropropene;cyclohexene oxide or cyclopentene oxide; andat least one antioxidant selected from the group consisting of: 2,5-di-tert-butyl-4-methoxyphenol; a C7-9 branched alkyl ester of 3,5,-di-tert-butyl-4-hydroxycinnamic acid; and 1,2,5,6-
1. A stabilized composition comprising: 2-bromo-3,3,3-trifluoropropene;cyclohexene oxide or cyclopentene oxide; andat least one antioxidant selected from the group consisting of: 2,5-di-tert-butyl-4-methoxyphenol; a C7-9 branched alkyl ester of 3,5,-di-tert-butyl-4-hydroxycinnamic acid; and 1,2,5,6-diepoxycyclooctane. 2. The composition of claim 1 consisting essentially of: 2-bromo-3,3,3-trifluoropropene;cyclohexene oxide; and2,5-di-tert-butyl-4-methoxyphenol; a C7-9 branched alkyl ester of 3,5,-di-tert-butyl-4-hydroxycinnamic acid; or 1,2,5,6-diepoxycyclooctane. 3. The composition of claim 1, wherein the cyclohexene oxide or cyclopentene oxide has a concentration in the range of about 500 ppm to about 10,000 ppm, based upon the weight of the stabilized composition. 4. The composition of claim 1, comprising a C7-9 branched alkyl ester of 3,5,-di-tert-butyl-4-hydroxycinnamic acid having a concentration in the range of about 200 ppm to about 5000 ppm, based upon the weight of the stabilized composition. 5. The composition of claim 1, wherein the composition is stored in a container comprising a metal surface, wherein at least a portion of the metal surface is in contact with at least a portion of the composition. 6. The composition of claim 5, wherein the metal surface comprises at least one of steel and brass. 7. The composition of claim 1, further comprising N2. 8. The composition of claim 7, wherein the N2 has a partial pressure of about 20 psig to about 800 psig. 9. A fire extinguishing unit, comprising a container, a valve, a nozzle, and optionally a hose; wherein said container contains a fire extinguishing composition according to claim 1:wherein the composition has a pressure of about 70 psig to about 800 psig. 10. The fire extinguishing system of claim 9, wherein the container, valve and other wetted parts comprise at least one of steel, stainless steel, carbon steel, aluminum or brass. 11. A method of stabilizing 2-bromo-3,3,3-trifluoropropene comprising adding to the 2-bromo-3,3,3-trifluoropropene an effective amount of: cyclohexene oxide or cyclopentene oxide; andat least one antioxidant selected from the group consisting of 2,5-di-tert-butyl-4-methoxyphenol; a C7-9 branched alkyl ester of 3,5,-di-tert-butyl-4-hydroxycinnamic acid; and 1,2,5,6-diepoxycyclooctane. 12. The method of claim 11, comprising adding about 2000 ppm by weight cyclohexane oxide and about 1000 ppm by weight of a C7-9 branched alkyl ester of 3,5,-di-tert-butyl-4-hydroxycinnamic acid to the 2-bromo-3,3,3-trifluoropropene. 13. The method of claim 11, comprising adding about 2000 ppm by weight cyclohexene oxide and about 1000 ppm by weight of 2,5-di-tert-butyl-4-methoxyphenol to the 2-bromo-3,3,3-trifluoropropene. 14. The method of claim 11, wherein adding cyclohexene oxide or cyclopentene oxide; and 2,5-di-tert-butyl-4-methoxyphenol; a C7-9 branched alkyl ester of 3,5,-di-tert-butyl-4-hydroxycinnamic acid; or 1,2,5,6-diepoxycyclooctane to the 2-bromo-3,3,3-trifluoropropene provides a composition that is stable in the presence of a metal comprising carbon steel or brass such that substantially no visible change to the metal occurs upon contact between the composition and the metal for about 2 weeks at about 60° C. 15. The method of claim 11 where the purity of the 2-bromo-3,3,3-trifluoropropene is 99.0% or greater.
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