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US3656553A - Flame-extinguishing substance comprising 1,2-dibromohexafluropropane - Google Patents

Flame-extinguishing substance comprising 1,2-dibromohexafluropropane Download PDF

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Publication number
US3656553A
US3656553A US36937A US3656553DA US3656553A US 3656553 A US3656553 A US 3656553A US 36937 A US36937 A US 36937A US 3656553D A US3656553D A US 3656553DA US 3656553 A US3656553 A US 3656553A
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United States
Prior art keywords
extinguishing
fire
flame
dibromohexafluoropropane
composition
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Expired - Lifetime
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US36937A
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English (en)
Inventor
Nicholino Rainaldi
Pierluigi Fatutto
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Montedison SpA
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Montedison SpA
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0028—Liquid extinguishing substances
    • A62D1/0057—Polyhaloalkanes

Definitions

  • Pre-eminent among these other properties is the toxicity of the fire-extinguishing agent and/or its thermal decomposition products while another factor may be the ability of the product to prevent flashback, i.e. the tendency to reignition of an extinguished zone upon the formation of an opening in the blanket of fire-extinguishing material.
  • Considerations of economic character are also relevant, these including the quantity of the fire-extinguishing agent consumed per unit time, per unit area or under the particular fire conditions, the nature, cost and stability of the product and the container in which it may be stored, and the nature of the discharge or distribution of the product.
  • CF BrCFBr-CF 1,2-dibromohexafluoropropane
  • the l,2-dibromohexafluoropropane may be used directly as the sole flame-extinguishing agent but also can be incorporated in an amount ranging from 5 to 25 percent by weight in fire-extinguishing compositions: preferably, 7 to 15 parts by weight of the bromofluoropropane is employed per 100 parts by weight of the composition.
  • the composition may also include a surface-active agent, of which the most suitable are the organic sulfonates and sulfates, alkylarylpolyethylene glycol ethers, esters of alcohols such as sorbitol with higher fatty acids such as lauric, stearic and palmitic acids, and sodium or ammonium salts of sulfocarboxylic acids such as dialkyl sulfosuccinic acid having up to eight carbon atoms in the alkyl group.
  • the composition should also include at least one, and possibly a plurality of propellants, capable of dispersing the fire-extinguishing agent over long distances, preferably an inert gas (i.e.
  • Inert propellant gases suitable for the purpose of the present invention include nitrogen, carbon dioxide and sulfohexafluoride while the preferred chlorofluoroalkanes are those containing up to six halogen atoms and one or two carbon atoms, the halogens being exclusively chlorine and fluorine. Of greatest desirability are difluoromonochloromethane, difluorodichloromethane, trifluoromonochloromethane, i.e. chlorofluoromethane. It has been found to be suitable to use compressed or liquid nitrogen, compressed air or the like for relatively long spray jets, the propellant here acting as foaming agents as well. The composition may be displaced through the nozzle by pumps or compressors.
  • the composition can also contain one or more antifreezing agents, corrosion inhibitors, buffering agents, thickening and carrying agents and like components.
  • polyalcohol antifreezing agents such as ethyleneglycol and propyleneglycol
  • corrosion inhibitors such as sodium nitrate, potassium nitrate, sodium phosphate, potassium phosphate, the corresponding polyphosphates and amino acids, such as triethanolamine.
  • the corrosion inhibitors act as bases which react with any acid which may be present and also serve as buffering agents.
  • Thickening agents such as alkali (sodium or potassium) silicate may be used as the thixotropic or thickening agent.
  • the pool had an area of 0.4 m"; the fuel mixture was gasoline/gas oil in 2:1 proportion: the extinguishing cylinder was charged with 216 B2, pressurized with nitrogen at 14 atmospheres gauge.
  • a flame extinguishing composition was prepared by intimately mixing 100 parts by weight of 1,2-dibromohexafluoropropane with 140 parts by weight of a surface-active agent in the form of a 30 percent aqueous solution of the sodium salt of lauritic-ether-sulfate, 120 parts by weight of ethyleneglycol antifreeze agent, 1.5 parts by weight of sodium nitrate corrosion inhibitor, 6.5 parts by weight of NAI-I PQ, buffering agent, 65 parts by weight of difluorodichloromethane and 55 parts by weight of difluoromonochloromethane propellants, 70 parts by weight of a 30 percent aqueous solution of potassium silicate and 442 parts by weight of water.
  • the extinguishing time on a test area of 1.5 m in which the flames were produced by igniting a 1:1 gasoline/diesel-oil fuel was less than seconds
  • the quantity of extinguishing composition employed was less than 2.6 kg
  • FIG. 1 we have diagrammed the relative extinguishing powers of l,2-dibromohexafluoropropane and various conventional or prior-art flame-extinguishing substances.
  • the peak values corresponding to the curves are given.
  • FIG. 1 represents, along the abscissa, the concentration of n-heptane in a fuel/air mixture while the ordinate portrays the minimum concentration of the flameextinguishing agent necessary to render the mixture nonflammable.
  • the tests were carried out at ambient temperature in a conventional 3-liter explosimetric glass burette equipped with an ignition device in the form of a 6-ohm nickel-chromium wire energized at 80 volts a-c.
  • the level at which the extinguishing agent was introduced was kept constant and the general approach followed was that described by 1.1-1.
  • the curves represent the boundary between the explosion zone within the curve and the nonexplosion zone externally of the curve, i.e. the explosive limit. As the peak of the curve is reduced, the quantity of inhibitor required to prevent explosion is correspondingly reduced and the more efficient is the fire-extinguishing agent.
  • Table 1 also demonstrates the surprising superiority of asymmetric l,2-dibromohexafluoropropane by comparison with symmetrical l,3-dibromohexafluoropropane.
  • a method of extinguishing a fire comprising dispensing thereon a flame-extinguishing agent consisting at least in part of 1,2-dibromohexafluoropropane.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US36937A 1969-05-16 1970-05-13 Flame-extinguishing substance comprising 1,2-dibromohexafluropropane Expired - Lifetime US3656553A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1689269 1969-05-16

Publications (1)

Publication Number Publication Date
US3656553A true US3656553A (en) 1972-04-18

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US36937A Expired - Lifetime US3656553A (en) 1969-05-16 1970-05-13 Flame-extinguishing substance comprising 1,2-dibromohexafluropropane

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US (1) US3656553A (xx)
AT (1) AT297498B (xx)
AU (1) AU1501870A (xx)
BE (1) BE750304A (xx)
DE (1) DE2023552A1 (xx)
FR (1) FR2047735A5 (xx)
NL (1) NL7006794A (xx)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818229A (en) * 1970-12-21 1974-06-18 Univ Illinois Radiopaque agents comprising brominated perfluorocarbons
US4014799A (en) * 1975-04-09 1977-03-29 E. I. Du Pont De Nemours And Company Bromotrifluoromethane-containing fire extinguishing composition
US4031961A (en) * 1974-03-19 1977-06-28 Guardian Chemical Corporation Oil and gasoline fire extinguishing composition
US4390069A (en) * 1979-10-01 1983-06-28 Grumman Aerospace Corporation Trifluorobromomethane foam fire fighting system
US4446923A (en) * 1979-04-30 1984-05-08 Walter Kidde & Co., Inc. Removal of explosive or combustible gas or vapors from tanks and other enclosed spaces
US5084190A (en) * 1989-11-14 1992-01-28 E. I. Du Pont De Nemours And Company Fire extinguishing composition and process
WO1992008520A1 (en) * 1990-11-15 1992-05-29 E.I. Du Pont De Nemours And Company Fire extinguishing composition and process
US5141654A (en) * 1989-11-14 1992-08-25 E. I. Du Pont De Nemours And Company Fire extinguishing composition and process
WO1995016806A1 (en) * 1993-12-17 1995-06-22 University Research Foundation Tobacco extract composition and method
US20030105368A1 (en) * 2001-09-28 2003-06-05 Yuichi Iikubo Materials and methods for the production and purification of chlorofluorocarbons and hydrofluorocarbons
US20040217322A1 (en) * 2003-04-17 2004-11-04 Vimal Sharma Fire extinguishing mixtures, methods and systems
US20050038302A1 (en) * 2003-08-13 2005-02-17 Hedrick Vicki E. Systems and methods for producing fluorocarbons
CN104614220A (zh) * 2015-02-16 2015-05-13 浙江环新氟材料股份有限公司 二溴六氟丙烷在红外测油仪中的应用
WO2019008419A1 (en) * 2017-07-06 2019-01-10 Swiss Fire Protection Research & Development Ag POST-FOAMING COMPOSITION FOR PROTECTION AGAINST FIRE AND / OR HEAT
DE102020209211A1 (de) 2020-07-22 2022-01-27 Albert Ziegler Gmbh Verfahren zur Bereitstellung eines flüssigen Arbeits-Schaummittels und Schaumzubereitungsvorrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668407A (en) * 1983-11-09 1987-05-26 Gerard Mark P Fire extinguishing composition and method for preparing same
ES2078348T3 (es) * 1989-08-21 1995-12-16 Great Lakes Chemical Corp Metodos para la extincion de incendios y mezclas que utilizan fluoropropanos.
DE10329871B4 (de) * 2003-07-02 2017-12-28 Volkswagen Ag Verfahren und System zur telemetrischen Diagnose elektronischer Einrichtungen eines Fahrzeugs

Citations (10)

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Publication number Priority date Publication date Assignee Title
US2244512A (en) * 1939-03-04 1941-06-03 Preparation of aliphatic-aromatic
US2653130A (en) * 1951-05-17 1953-09-22 Du Pont Fire extinguishing composition of cbrf or cfbrcfbr containing cf as a propellant
US2658928A (en) * 1947-03-31 1953-11-10 Minnesota Mining & Mfg Method of making fluorocarbon chlorides and bromides by thermal chlorination and bromination of fluorocarbon hydrides
US2678953A (en) * 1950-10-14 1954-05-18 Douglas Aircraft Co Inc Method of making fluorinated organic bromides and resulting new chemical compounds
CA589990A (en) * 1960-01-05 Lambert Milton Nozzle for a fire extinguisher
US2959359A (en) * 1959-03-02 1960-11-08 Casaletto Joseph Adjustable spray nozzle with resilient body
US3212998A (en) * 1962-12-06 1965-10-19 Dow Chemical Co Azeotropic distillation of bromine
US3276999A (en) * 1962-07-12 1966-10-04 Pechiney Saint Gobain Fire extinguishing process
US3343794A (en) * 1965-07-12 1967-09-26 Vyacheslavovich Bogdan Jet nozzle for obtaining high pulse dynamic pressure heads
US3479286A (en) * 1965-09-22 1969-11-18 Montedison Spa Flame-extinguishing compositions

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA589990A (en) * 1960-01-05 Lambert Milton Nozzle for a fire extinguisher
US2244512A (en) * 1939-03-04 1941-06-03 Preparation of aliphatic-aromatic
US2658928A (en) * 1947-03-31 1953-11-10 Minnesota Mining & Mfg Method of making fluorocarbon chlorides and bromides by thermal chlorination and bromination of fluorocarbon hydrides
US2678953A (en) * 1950-10-14 1954-05-18 Douglas Aircraft Co Inc Method of making fluorinated organic bromides and resulting new chemical compounds
US2653130A (en) * 1951-05-17 1953-09-22 Du Pont Fire extinguishing composition of cbrf or cfbrcfbr containing cf as a propellant
US2959359A (en) * 1959-03-02 1960-11-08 Casaletto Joseph Adjustable spray nozzle with resilient body
US3276999A (en) * 1962-07-12 1966-10-04 Pechiney Saint Gobain Fire extinguishing process
US3212998A (en) * 1962-12-06 1965-10-19 Dow Chemical Co Azeotropic distillation of bromine
US3343794A (en) * 1965-07-12 1967-09-26 Vyacheslavovich Bogdan Jet nozzle for obtaining high pulse dynamic pressure heads
US3479286A (en) * 1965-09-22 1969-11-18 Montedison Spa Flame-extinguishing compositions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Hudlicky, Milos; Chemistry of Organic Fluorine Compounds, MacMillan Co., N.Y., 1962 p. 342 *

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818229A (en) * 1970-12-21 1974-06-18 Univ Illinois Radiopaque agents comprising brominated perfluorocarbons
US4031961A (en) * 1974-03-19 1977-06-28 Guardian Chemical Corporation Oil and gasoline fire extinguishing composition
US4014799A (en) * 1975-04-09 1977-03-29 E. I. Du Pont De Nemours And Company Bromotrifluoromethane-containing fire extinguishing composition
US4446923A (en) * 1979-04-30 1984-05-08 Walter Kidde & Co., Inc. Removal of explosive or combustible gas or vapors from tanks and other enclosed spaces
US4390069A (en) * 1979-10-01 1983-06-28 Grumman Aerospace Corporation Trifluorobromomethane foam fire fighting system
US5141654A (en) * 1989-11-14 1992-08-25 E. I. Du Pont De Nemours And Company Fire extinguishing composition and process
US5084190A (en) * 1989-11-14 1992-01-28 E. I. Du Pont De Nemours And Company Fire extinguishing composition and process
WO1992008519A1 (en) * 1989-11-14 1992-05-29 E.I. Du Pont De Nemours And Company Fire extinguishing composition and process
WO1992008520A1 (en) * 1990-11-15 1992-05-29 E.I. Du Pont De Nemours And Company Fire extinguishing composition and process
WO1995016806A1 (en) * 1993-12-17 1995-06-22 University Research Foundation Tobacco extract composition and method
US5435941A (en) * 1993-12-17 1995-07-25 University Of Louisville Tobacco extract composition and method
GB2302538B (en) * 1993-12-17 1998-03-18 Univ Louisville Res Found Tobacco extract for corrosion inhibition of metals
US7348461B2 (en) 2001-09-28 2008-03-25 Great Lakes Chemical Corporation Processes for halogenating compounds
US20040102662A1 (en) * 2001-09-28 2004-05-27 Yuichi Iikubo Processes for purifying chlorofluorinated compounds
US20040102663A1 (en) * 2001-09-28 2004-05-27 Yuichi Iikubo Materials and methods for the production and purification of chlorofluorocarbons and hydrofluorocarbons
US20040102661A1 (en) * 2001-09-28 2004-05-27 Yuichi Iikubo Processes for purifying chlorofluorinated compounds and processes for purifying CF3CFHCF3
US20030105368A1 (en) * 2001-09-28 2003-06-05 Yuichi Iikubo Materials and methods for the production and purification of chlorofluorocarbons and hydrofluorocarbons
US7335805B2 (en) 2001-09-28 2008-02-26 Great Lakes Chemical Corporation Processes for purifying reaction products and processes for separating chlorofluorinated compounds
US7151197B2 (en) 2001-09-28 2006-12-19 Great Lakes Chemical Corporation Processes for purifying chlorofluorinated compounds and processes for purifying CF3CFHCF3
US7329786B2 (en) 2001-09-28 2008-02-12 Great Lakes Chemical Corporation Processes for producing CF3CFHCF3
US7332635B2 (en) 2001-09-28 2008-02-19 Great Lakes Chemical Corporation Processes for purifying chlorofluorinated compounds
US20040217322A1 (en) * 2003-04-17 2004-11-04 Vimal Sharma Fire extinguishing mixtures, methods and systems
US20060108559A1 (en) * 2003-04-17 2006-05-25 Vimal Sharma Fire extinguishing mixtures, methods and systems
US7216722B2 (en) 2003-04-17 2007-05-15 Great Lakes Chemical Corporation Fire extinguishing mixtures, methods and systems
US7223351B2 (en) 2003-04-17 2007-05-29 Great Lakes Chemical Corporation Fire extinguishing mixtures, methods and systems
US20050148804A1 (en) * 2003-08-13 2005-07-07 Hedrick Vicki E. Systems and methods for producing fluorocarbons
US20050038302A1 (en) * 2003-08-13 2005-02-17 Hedrick Vicki E. Systems and methods for producing fluorocarbons
US7368089B2 (en) 2003-08-13 2008-05-06 Great Lakes Chemical Corporation Systems and methods for producing fluorocarbons
CN104614220A (zh) * 2015-02-16 2015-05-13 浙江环新氟材料股份有限公司 二溴六氟丙烷在红外测油仪中的应用
CN104614220B (zh) * 2015-02-16 2017-04-05 浙江环新氟材料股份有限公司 二溴六氟丙烷在红外测油仪中的应用
WO2019008419A1 (en) * 2017-07-06 2019-01-10 Swiss Fire Protection Research & Development Ag POST-FOAMING COMPOSITION FOR PROTECTION AGAINST FIRE AND / OR HEAT
CN111093777A (zh) * 2017-07-06 2020-05-01 瑞士消防研发公司 用于防火和/或防热的后发泡组合物
CN111093777B (zh) * 2017-07-06 2021-08-10 瑞士消防研发公司 用于防火和/或防热的碱性后发泡组合物
AU2017422559B2 (en) * 2017-07-06 2022-10-13 Swiss Fire Protection Research & Development Ag Post-foaming composition for protection against fire and/or heat
US11577110B2 (en) 2017-07-06 2023-02-14 Swiss Fire Protection Research & Development Ag Post-foaming composition for protection against fire and/or heat
DE102020209211A1 (de) 2020-07-22 2022-01-27 Albert Ziegler Gmbh Verfahren zur Bereitstellung eines flüssigen Arbeits-Schaummittels und Schaumzubereitungsvorrichtung

Also Published As

Publication number Publication date
DE2023552A1 (de) 1971-04-01
BE750304A (fr) 1970-11-12
FR2047735A5 (xx) 1971-03-12
AU1501870A (en) 1971-11-18
NL7006794A (xx) 1970-11-18
AT297498B (de) 1972-03-27

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