EP0383443A2 - Feuerlöschmittel - Google Patents
Feuerlöschmittel Download PDFInfo
- Publication number
- EP0383443A2 EP0383443A2 EP90300774A EP90300774A EP0383443A2 EP 0383443 A2 EP0383443 A2 EP 0383443A2 EP 90300774 A EP90300774 A EP 90300774A EP 90300774 A EP90300774 A EP 90300774A EP 0383443 A2 EP0383443 A2 EP 0383443A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fire extinguishing
- fire
- tetrafluoroethane
- optionally
- bromodifluoromethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- A62D1/0071—Foams
-
- 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
- the present invention relates to fire extinguishing compositions.
- the present invention provides a fire extinguishing composition consisting essentially of:
- a further aspect of the present invention provides for a method of extinguishing a fire which comprises applying to said fire a fire extinguishing composition consisting essentially of:
- the fire extinguishing compositions of the invention may contain a single compound selected from bromodifluoromethane (CF2HBr), 1-bromo- 1,2,2,2-tetrafluoroethane (CF3CHFBr), 1-chloro-1,2,2,2-tetrafluoroethane (CF3CFHCl) and 1,1-dichloro-2,2,2-trifluoroethane (CF3CHCl2) or they may contain a mixture of two or more of these compounds.
- bromodifluoromethane (CF2HBr) and 1-bromo-1,2,2,2-tetrafluoroethane (CF3CHFBr) are preferred, bromodifluoromethane (CF2HBr) being the most preferred.
- the fire extinguishing compositions of the invention may further comprise one or more fire extinguishing compounds selected from the completely halogenated fluorobromoalkanes and fluorobromochloralkanes, such as 1,1,2,2,-tetrafluoro-1,2-dibromoethane (CF2Br-CF2Br), dibromodifluoromethane (CF2Br2), bromotrifluoromethane (CF3Br), and bromochlorodifluoromethane (CF2ClBr). Of these dibromodifluoromethane (CF2Br2) is preferred.
- the fire extinguishing compositions of the invention may also comprise one or more coadjuvant agents having a boiling point below 0°C (hereinafter referred to as coadjuvants), which may enhance the effectiveness of the fire extinguishing compositions, e.g on delivery from a fire extinguishing device.
- coadjuvants are the haloalkanes, especially the haloethanes and halomethanes, having a boiling point below 0°C, preferred examples of which are chlorodifluoromethane, 1,1,2,2-tetrafluoroethane and 1,1,1,2-tetrafluoroethane.
- Coadjuvants may, for example, be advantageously employed when 1,1-dichloro- 2,2,2-trifluoroethane (CF3CHCl2) is used as the sole or major fire extinguishing compound in the compositions of the invention, since 1,1-dichloro-2,2,2-trifluoroethane (CF3CHCl2) has a boiling point of 27°C, and is therefore a liquid at normal ambient temperatures.
- the use of coadjuvants in the fire extinguishing compositions of the invention is not essential, particularly where fire extinguishing compounds having a boiling point below 0°C are employed.
- CF2HBr bromodifluoromethane
- CF3CFHCl 1-chloro-1,2,2,2-tetrafluoroethane
- a fire extinguishing composition containing such a compound may be effectively discharged from a fire extinguishing device by employing another fire extinguishing compound(s) in combination therewith which has a boiling point below 0°C.
- These other fire extinguishing compounds may be selected, for example, from bromodifluoromethane and/or 1-chloro-1,2,2,2-tetrafluoroethane and/or the fully halogenated fluorobromoalkanes and/or fluorobromochloroalkanes. Notwithstanding the above, fire extinguishing compositions containing one or more coadjuvants may be preferred.
- the fire extinguishing compositions of the invention will typically comprise one or more gaseous propellants in order to expedite the discharge thereof, e.g. from a fire extinguishing device.
- Suitable propellants are compounds of low toxicity and high stability, preferred examples of which are nitrogen and carbon dioxide.
- the fire extinguishing compositions of the invention comprise other compounds in addition to the essential fire extinguishing compound(s), such as additional fire extinguishing compounds selected from the completely halogenated fluorobromoalkanes and fluorobromochloroalkanes and/or coadjuvant agents and/or gaseous propellants
- the proportion of the essential fire extinguishing compound(s) may vary within wide limits.
- a suitable fire extinguishing composition may comprise from as little as 5 % by volume to as much as 95 % by volume of the at least one essential fire extinguishing compound(s), based on the total volume of the fire extinguishing composition.
- a burner supplied with n-heptane was arranged in a glass apparatus to which air was supplied at a linear velocity of about 14 cm/s. The concentration of the fire extinguishing compound in the air was gradually increased until the flame was extinguished.
- Table 1 lists the concentration of each fire extinguishing compound in air (volume %) at the moment of extinction of the flame. TABLE 1 FIRE EXTINGUISHING COMPOUND CONCENTRATION IN AIR (Volume %) AT POINT OF EXTINCTION CF2HBr 4.5 CF3CFHCl 7.8 CF3CHCl2 6.3 CF3CFHBr 3.6
- CEN 17B fire was started using 17 litres of n-heptane as the fuel. The fire was extinguished in 4 seconds using 1200 g of 1-chloro-1,2,2,2-tetrafluoroethane discharged in 8 seconds from a 1230 ml Thorn extinguisher by 130 psi of nitrogen.
- CEN 13B fire was started using 13 litres of n-heptane as the fuel. The fire was extinguished in 4.5 seconds using a mixture of 725 g of 1,1-dichloro-2,2,2-trifluoroethane + 80 g chlorodifluoromethane discharged in 8 seconds from a 760 ml Thorn extinguisher by 130 psi of nitrogen.
- CEN 21B fire was started using 21 litres of n-heptane as the fuel. The fire was extinguished in 6 seconds using a mixture of 1200 g of 1,1-dichloro-2,2,2-trifluoroethane + 135 g chlorodifluoromethane discharged in 8 seconds from a 1230 ml Thorn extinguisher by 130 psi of nitrogen.
- CEN 13B fire was started using 4 litres of n-heptane as the fuel. The fire was extinguished in 1.5 seconds after allowing the fire to burn for 20 seconds, using 359 g of bromodifluoromethane discharged from a 1230 ml Thorn extinguisher containing 1258 g of bromodifluoromethane pressurised to 150 psi with nitrogen.
- CEN 21B fire was started using 21 litres of n-heptane as the fuel. The fire was extinguished in 2.0 seconds after allowing the fire to burn for 60 seconds, using 452 g of bromodifluoromethane discharged from a 1230 ml Thorn extinguisher containing 920 g of bromodifluoromethane pressurised to 100 psi with nitrogen.
- CEN 13B fire was started using 4 litres of n-heptane as the fuel. The fire was extinguished in 1.1 seconds, after allowing the fire to burn for 20 seconds, using 360 g of 1-bromo-1,2,2,2-tetrafluoroethane discharged from a 1230 ml Thorn extinguisher containing 1510 g of 1-bromo-1,2,2,2-tetrafluoroethane pressurized to 150 psi with nitrogen.
- CEN 21B fire was started using 21 litres of n-heptane as the fuel. The fire was extinguished in 2.2 seconds, after allowing the fire to burn for 60 seconds, using 680 g of 1-bromo-1,2,2,2-tetrafluoroethane discharged from a 1230 ml Thorn extinguisher containing 1150 g of 1-bromo-1,2,2,2-tetrafluoroethane pressurized to 140 psi with nitrogen.
- CEN 55B fire was started using 55 litres of n-heptane as the fuel. The fire was extinguished in 3.5 seconds, after allowing the fire to burn for 60 seconds, using 950 g of a 30/70 v/v blend of bromodifluoromethane/dibromodifluoromethane discharged from a 1230 ml Thorn extinguisher containing 1900 g of the blend pressurised to 130 psi with nitrogen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898903334A GB8903334D0 (en) | 1989-02-14 | 1989-02-14 | Flame extinguishing compositions |
GB8903334 | 1989-02-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0383443A2 true EP0383443A2 (de) | 1990-08-22 |
EP0383443A3 EP0383443A3 (de) | 1991-05-08 |
Family
ID=10651680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900300774 Withdrawn EP0383443A3 (de) | 1989-02-14 | 1990-01-25 | Feuerlöschmittel |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0383443A3 (de) |
JP (1) | JPH02265575A (de) |
KR (1) | KR900012640A (de) |
AU (1) | AU620687B2 (de) |
GB (1) | GB8903334D0 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991005585A1 (en) * | 1989-10-10 | 1991-05-02 | Great Lakes Chemical Corporation | Fire extinguishant compositions, methods and systems utilizing bromodifluoromethane |
WO1991012853A1 (en) * | 1990-03-02 | 1991-09-05 | Great Lakes Chemical Corporation | Fire extinguishing methods and compositions utilizing 2-chloro-1,1,1,2-tetrafluoroethane |
US5080177A (en) * | 1990-07-26 | 1992-01-14 | Great Lakes Chemical Corporation | Fire extinguishing methods utilizing 1-bromo-1,1,2,2-tetra-fluoroethane |
WO1992001490A1 (en) * | 1990-07-26 | 1992-02-06 | Great Lakes Chemical Corporation | Fire extinguishing methods utilizing 1-chloro-1,1,2,2-tetrafluoroethane |
EP0517904A1 (de) * | 1991-01-02 | 1992-12-16 | Powsus, Inc. | Feuerlöschmittel |
EP0570367A1 (de) * | 1989-11-14 | 1993-11-24 | E.I. Du Pont De Nemours And Company | Mischung und verfahren zum löschen von bränden |
US7151197B2 (en) | 2001-09-28 | 2006-12-19 | Great Lakes Chemical Corporation | Processes for purifying chlorofluorinated compounds and processes for purifying CF3CFHCF3 |
US7216722B2 (en) | 2003-04-17 | 2007-05-15 | Great Lakes Chemical Corporation | Fire extinguishing mixtures, methods and systems |
US7368089B2 (en) | 2003-08-13 | 2008-05-06 | Great Lakes Chemical Corporation | Systems and methods for producing fluorocarbons |
RU2678670C2 (ru) * | 2012-03-16 | 2019-01-30 | Меггитт Сейфти Системз, Инк. | Огнегасящие материалы и системы и способы применения |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE523661C2 (sv) | 1992-02-05 | 2004-05-04 | American Pacific Corp | Gas-vätskeblandning avsedd för användning som brandsläckningsmedel |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2021981A (en) * | 1930-06-23 | 1935-11-26 | Gen Motors Corp | Self propelling fire extinguishing charge containing a double halogen hydrocarbon compound |
GB1132636A (en) * | 1965-09-22 | 1968-11-06 | Montedison Spa | Improvements in or relating to flame-extinguishing compositions |
FR1605545A (en) * | 1962-04-04 | 1979-06-29 | High boiling and low freezing fire extinguishing compsn. - comprises tri:fluoro:chloroethylene or its oligomer and/or tri:fluoro:chloro:bromo:ethane(s) and opt. halogenated hydrocarbon(s) | |
US4198313A (en) * | 1976-04-16 | 1980-04-15 | Montedison S.P.A. | Propellant compositions for aerosols |
US4810403A (en) * | 1987-06-09 | 1989-03-07 | E. I. Du Pont De Nemours And Company | Halocarbon blends for refrigerant use |
-
1989
- 1989-02-14 GB GB898903334A patent/GB8903334D0/en active Pending
-
1990
- 1990-01-25 EP EP19900300774 patent/EP0383443A3/de not_active Withdrawn
- 1990-02-01 AU AU49026/90A patent/AU620687B2/en not_active Ceased
- 1990-02-09 KR KR1019900001595A patent/KR900012640A/ko not_active IP Right Cessation
- 1990-02-14 JP JP2031663A patent/JPH02265575A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2021981A (en) * | 1930-06-23 | 1935-11-26 | Gen Motors Corp | Self propelling fire extinguishing charge containing a double halogen hydrocarbon compound |
FR1605545A (en) * | 1962-04-04 | 1979-06-29 | High boiling and low freezing fire extinguishing compsn. - comprises tri:fluoro:chloroethylene or its oligomer and/or tri:fluoro:chloro:bromo:ethane(s) and opt. halogenated hydrocarbon(s) | |
GB1132636A (en) * | 1965-09-22 | 1968-11-06 | Montedison Spa | Improvements in or relating to flame-extinguishing compositions |
US4198313A (en) * | 1976-04-16 | 1980-04-15 | Montedison S.P.A. | Propellant compositions for aerosols |
US4810403A (en) * | 1987-06-09 | 1989-03-07 | E. I. Du Pont De Nemours And Company | Halocarbon blends for refrigerant use |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991005585A1 (en) * | 1989-10-10 | 1991-05-02 | Great Lakes Chemical Corporation | Fire extinguishant compositions, methods and systems utilizing bromodifluoromethane |
EP0570367B1 (de) * | 1989-11-14 | 1999-01-27 | E.I. Du Pont De Nemours And Company | Mischung und verfahren zum löschen von bränden |
EP0570367A1 (de) * | 1989-11-14 | 1993-11-24 | E.I. Du Pont De Nemours And Company | Mischung und verfahren zum löschen von bränden |
US5113947A (en) * | 1990-03-02 | 1992-05-19 | Great Lakes Chemical Corporation | Fire extinguishing methods and compositions utilizing 2-chloro-1,1,1,2-tetrafluoroethane |
WO1991012853A1 (en) * | 1990-03-02 | 1991-09-05 | Great Lakes Chemical Corporation | Fire extinguishing methods and compositions utilizing 2-chloro-1,1,1,2-tetrafluoroethane |
WO1992001490A1 (en) * | 1990-07-26 | 1992-02-06 | Great Lakes Chemical Corporation | Fire extinguishing methods utilizing 1-chloro-1,1,2,2-tetrafluoroethane |
US5080177A (en) * | 1990-07-26 | 1992-01-14 | Great Lakes Chemical Corporation | Fire extinguishing methods utilizing 1-bromo-1,1,2,2-tetra-fluoroethane |
EP0517904A1 (de) * | 1991-01-02 | 1992-12-16 | Powsus, Inc. | Feuerlöschmittel |
EP0517904A4 (en) * | 1991-01-02 | 1993-06-02 | Powsus, Inc. | Fire-extinguishing compositions |
US7332635B2 (en) | 2001-09-28 | 2008-02-19 | Great Lakes Chemical Corporation | Processes for purifying chlorofluorinated compounds |
US7329786B2 (en) | 2001-09-28 | 2008-02-12 | Great Lakes Chemical Corporation | Processes for producing CF3CFHCF3 |
US7151197B2 (en) | 2001-09-28 | 2006-12-19 | Great Lakes Chemical Corporation | Processes for purifying chlorofluorinated compounds and processes for purifying CF3CFHCF3 |
US7335805B2 (en) | 2001-09-28 | 2008-02-26 | Great Lakes Chemical Corporation | Processes for purifying reaction products and processes for separating chlorofluorinated compounds |
US7348461B2 (en) | 2001-09-28 | 2008-03-25 | Great Lakes Chemical Corporation | Processes for halogenating compounds |
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 |
US7368089B2 (en) | 2003-08-13 | 2008-05-06 | Great Lakes Chemical Corporation | Systems and methods for producing fluorocarbons |
RU2678670C2 (ru) * | 2012-03-16 | 2019-01-30 | Меггитт Сейфти Системз, Инк. | Огнегасящие материалы и системы и способы применения |
Also Published As
Publication number | Publication date |
---|---|
EP0383443A3 (de) | 1991-05-08 |
AU620687B2 (en) | 1992-02-20 |
AU4902690A (en) | 1990-08-23 |
JPH02265575A (ja) | 1990-10-30 |
KR900012640A (ko) | 1990-09-01 |
GB8903334D0 (en) | 1989-04-05 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
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PUAL | Search report despatched |
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17P | Request for examination filed |
Effective date: 19910913 |
|
17Q | First examination report despatched |
Effective date: 19940126 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19941212 |