EP0376963A1 - Substance d'extinction du feu. - Google Patents

Substance d'extinction du feu.

Info

Publication number
EP0376963A1
EP0376963A1 EP88906822A EP88906822A EP0376963A1 EP 0376963 A1 EP0376963 A1 EP 0376963A1 EP 88906822 A EP88906822 A EP 88906822A EP 88906822 A EP88906822 A EP 88906822A EP 0376963 A1 EP0376963 A1 EP 0376963A1
Authority
EP
European Patent Office
Prior art keywords
boron
weight
solution
potassium
water
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.)
Granted
Application number
EP88906822A
Other languages
German (de)
English (en)
Other versions
EP0376963B1 (fr
EP0376963A4 (en
Inventor
Jon L Curzon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT88906822T priority Critical patent/ATE118365T1/de
Publication of EP0376963A1 publication Critical patent/EP0376963A1/fr
Publication of EP0376963A4 publication Critical patent/EP0376963A4/en
Application granted granted Critical
Publication of EP0376963B1 publication Critical patent/EP0376963B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A62D1/0028—Liquid extinguishing substances
    • A62D1/0035—Aqueous solutions

Definitions

  • the present invention relates to an improved fire extinguisher composition that is non-corrosive to metals such as aluminum, copper, and steel.
  • the composition of the invention further has minimum volatility and excellent reignition protection.
  • Liquid compounds are generally corrosive to metals. This is of particular concern in extinguishing fires on a cooking surface, such as a stove top. Specifically, even if the fire is successfully extinguished, the stove top, which is invariably a metal surface, may be damaged due to corrosion.
  • extinguishment consisting of fully covering the flaming body of grease with a coating of fire extinguishing agent applied by spraying. This has required a person to aim the fire extinguishing material, or if the material were being applied by an automatic apparatus, the latter would have to cover a relatively large expanse. If the fire extinguishing material did not completely cover the fire, the fire was not effectively extinguished.
  • an aqueous fire extinguishing solution which comprises water, potassium carbonate, and a boron-containing compound, wherein the potassium carbonate and the boron-containing compound are dissolved in the water to form the aqueous solution, the solution being sprayable on the fire.
  • an aqueous fire extinguishing solution which comprises potassium carbonate, a boron-containing compound, a potassium salt of an organic acid, and water, wherein the potassium carbonate, the boron-containing compound and the potassium salt of the organic acid are dissolved in the water to form the aqueous solution, the solution being sprayable on a fire.
  • an improved fire extinguishing composition comprises a mixture of potassium carbonate, a boron-containing compound, and water.
  • the composition in addition to the above, contains a potassium salt of an organic acid. It has been found that when either of these compositions are applied to a stove-top fire, such as a grease fire, or to a charcoal fire, the fire is immediately extinguished.
  • the flames will be extinguished immediately because of the interaction of the material with the grease and the spray of the material over the surface of the grease. It is believed that the placement of a small area of fire extinguishing compound into a large expanse of grease causes a matrix barrier blanketing composition to be formed which seeks out grease and flame, then covers the entire expanse of grease. The flames are thus extinguished by shutting off the oxygen supply as well as interfering with the chemical reaction of rapid oxidation.
  • the composition is capable of ascending an incline in order to seek out and blanket hot grease.
  • the potassium carbonate is present in an amount of between about 20% and 40% by weight, more preferably between about 25% and 26% by weight and most preferably between about 30% and 42% by weight.
  • the boron-containing compound is preferably boric acid, but it may be any other suitable boron-containing material in addition to or in place of boric acid, including
  • the boron-containing compound of the first embodiment is boric acid
  • it is present in an amount of between about 2% and 8% by weight, and most preferably between about 3% and 6% by weight, the remaining portion being water.
  • the quantity should be such as to provide an amount of boron equivalent to the amount that will be provided by the amounts of boric acid disclosed above.
  • one or more of the other boron compounds listed above can be substituted in whole or in part for the foregoing quantities of boric acid, provided that the amounts employed contain the ratio equivalent stoichiometric quantities of boron that will be present in the above-disclosed amounts of boric acid.
  • the amount of boron is between about .085% and about 1.7% by weight, more preferably between about 0.34% and about 1.36% by weight, and most preferably between about 0.51% and about 1.02% by weight.
  • the potassium carbonate portion is present in an amount of between about 20% and about 47% by weight, more preferably between about 25% and about 26% by
  • the potassium salt of the organic acid is present in an amount of between about 5% and about 30% by weight, more preferably between about 12% and about 25% by weight, and most preferably between about 17% and about 22% by weight.
  • the boric acid portion of the composition is present in an amount of between about 0.4% and 10% by weight, more preferably between about 2% and about 8% by weight, and most preferably between about 3% and about 6% by weight.
  • the same stoichiometric amounts of boron must be maintained if a boron-containing compound other than boric acid is used. Converting the above amounts of boric acid to a boron basis, the amount of boron is between about 0.068% to about 1.7% by weight, more preferably between about 0.34% and about 1.36% by weight, and most preferably between about 0.51% and about 1.02% by weight.
  • the potassium salts of organic acids are preferably potassium acetate, potassium tartrate or potassium citrate, but can generally be an acid salt having from 1 to 6 carbon atoms, and having a minimum solubility of about 150g/100ml. cold water.
  • the solution composition must reach a saturated condition for the most preferred or effective fire extinguishing action.
  • the solution may be dispensed from a pressurized can or a mechanical pump or any other device from which the solution can be projected. It has been found that the fire extinguishing solution is non-corrosive, that is, it will not corrode aluminum, copper,. steel or other metallic surfaces to which it has been applied during a fire extinguishing action, nor will it corrode metallic containers or piping used for containing or dispensing the solution. By contrast, most prior art aqueous fire extinguishing compositions have tended to dissolve metal.
  • the composition in aqueous form, it will not cause detrimental splattering when it is applied to, and reacts with, a flaming oil or grease. Rather, the composition forms a flow-controlled pasty matrix, in which the composition is spread rapidly across the surface of the grease fire to rapidly extinguish it. A thick crust forms on the surface of the grease after extinguishment, which protects the surface from flashback.
  • a composition of boric acid, water and potassium carbonate which has been found particularly effective comprises 40% by weight potassium carbonate, 2.5% by weight boric acid, and 56.5% by weight water.
  • a preferred composition incorporating the potassium salt of organic acid comprises 33.33% by weight potassium carbonate, 2.2% by weight boric acid, and 17.02% by weight potassium acetate, and the remaining water.
  • Table 1 summarizes the compositions and results from the examples.
  • aqueous composition containing 100 parts of 47% potassium carbonate in water was mixed with 14 parts of water, 24 parts of potassium acetate and 3 parts of boric acid. All components dissolved upon mixing; however, less than 1% by weight of precipitate formed upon refrigeration below 32°F. This indicates that the solution was a nearly saturated mixture. Three pounds of the composition were applied to and extinguished 16 separate grease fires. The fires were pre-burned for one minute to two and one half minutes in pans of 4" diameter with oil 1 1/2" deep, 13 1/4" diameter with 1/4"
  • aqueous composition containing 100 parts of 47% potassium carbonate in water was mixed with 15 parts water, 10 parts potassium acetate and 3.5 parts of boric acid. Three pounds of the composition were applied to and extinguished grease fires. Instantaneous knock down of the flames occurred with moderate volatility. Minimum flowability, stability and protection against reignition occurred.
  • aqueous composition containing 10 parts of 47% potassium carbonate in water was mixed with 50 parts of water, 50 parts of potassium acetate and 3.5 parts of boric acid. Three pounds of the composition were applied to and extinguished grease fires. Moderate knock down of the flames but with limited volatility occurred. Stability of the barrier matrix occurred but protection against reignition was moderate. The composition and resulting reaction products were corrosive to neither aluminum and copper components utilized to apply the composition nor to the stove and pans involved in the fire.
  • compositions and resulting reaction products were corrosive to neither aluminum and copper components utilized to apply the composition nor to the stove and pans involved in the fire.
  • aqueous composition containing 100 parts of 47% potassium carbonate in water was mixed with 15 parts of water and 1.5 parts of boric acid. Slight corrosion of aluminum wire was apparent within a seven day period. No corrosion was evident on aluminum wire when two parts or more boric acid were mixed with the aqueous composition.
  • aqueous composition containing 100 parts of 47% potassium carbonate in water was mixed with 15 parts of water and 25 parts of potassium acetate. No boric acid was added. Instantaneous corrosion occurred on aluminum wire and the wire was completely dissolved within a seven day period of time.
  • boron containing compounds such as potassium tetraborate but not limited to this boron-containing compound were mixed in parts equivalent to the stoichiometric quantity of 3.5 parts of boric acid. They were found non-corrosive to aluminum over extended periods of time. Excessive quantities of boron containing compounds are not considered detrimental to the environment preventing corrosion nor to the fire extinguishing properties of the composition. Excess boron containing materials will precipitate as a solid in the composition.
  • Example 2 The same procedure as Example 1 was followed, except that potassium formate was substituted for the potassium acetate of Example 1. Instantaneous knock down occurred. Volatility was minimum. Matrix barrier and flow were moderate and the composition was non-corrosive over an extended period.

Abstract

La substance d'extinction du feu décrite comprend du carbonate de potassium, un composé contenant du bore, ainsi que de l'eau. Dans une autre variante, ladite substance d'extinction du feu comprend, en plus des éléments mentionnés ci-dessus, un sel de potassium d'un acide organique ayant de 1 à 6 atomes de carbone. Ladite substance d'extinction du feu a la propriété d'être non corrosive pour les métaux.
EP88906822A 1988-07-11 1988-07-11 Substance d'extinction du feu Expired - Lifetime EP0376963B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88906822T ATE118365T1 (de) 1988-07-11 1988-07-11 Feuerlöschmittel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1988/002316 WO1990000423A1 (fr) 1988-07-11 1988-07-11 Substance d'extinction du feu

Publications (3)

Publication Number Publication Date
EP0376963A1 true EP0376963A1 (fr) 1990-07-11
EP0376963A4 EP0376963A4 (en) 1990-12-27
EP0376963B1 EP0376963B1 (fr) 1995-02-15

Family

ID=22208786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88906822A Expired - Lifetime EP0376963B1 (fr) 1988-07-11 1988-07-11 Substance d'extinction du feu

Country Status (4)

Country Link
EP (1) EP0376963B1 (fr)
JP (1) JPH03500252A (fr)
DE (1) DE3853073T2 (fr)
WO (1) WO1990000423A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08257157A (ja) * 1995-03-24 1996-10-08 Ebisu Kagaku Kenkyusho:Kk 手投げ消火液弾
US5820776A (en) * 1997-05-16 1998-10-13 Ansul, Incorporated Combination of a novel fire extinguishing composition employing a eutectic salt mixture and water and a method of using same to extinguish fires
DE10003793A1 (de) * 2000-01-28 2001-09-06 Febbex Ag Steinsel Verfahren und Löschmittel zum Löschen eines Öl- und/oder Fettbrandes
CA2413152A1 (fr) * 2001-04-20 2002-10-31 Kohjin Co., Ltd. Agent d'extinction d'incendie, eau pour extinction d'incendie et procede d'extinction d'incendie
CN1915461B (zh) * 2006-09-07 2010-08-18 广州市花都区花东南方林业扑火工具厂 一种灭火剂及其制造方法
CN102083500A (zh) * 2008-05-30 2011-06-01 基迪-芬沃尔公司 灭火组合物
EP2707105A2 (fr) * 2011-05-09 2014-03-19 Lubrizol Advanced Materials, Inc. Fluide d'extinction d'incendie contenant un sel de type carboxylate
EP3863736A1 (fr) 2018-10-12 2021-08-18 Lubrizol Advanced Materials, Inc. Fluide d'extinction d'incendie contenant un sel de type carboxylate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1588687A (fr) * 1968-10-16 1970-04-17
JPS60142869A (ja) * 1983-12-29 1985-07-29 ヤマト消火器株式会社 消火剤組成物

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US914233A (en) * 1906-11-09 1909-03-02 Graaff & Cie Ges Mit Beschr Haftung W Frost-proof fire-extinguishing liquid.
US1278715A (en) * 1918-01-14 1918-09-10 American La France Fire Engine Company Inc Fire-extinguisher composition.
US1278716A (en) * 1918-01-14 1918-09-10 American La France Fire Engine Company Inc Fire-extinguisher composition.
US1393236A (en) * 1918-01-14 1921-10-11 American La France Fire Engine Fire-extinguisher composition
US1278714A (en) * 1918-01-14 1918-09-10 American La France Fire Engine Company Inc Fire-extinguisher composition.
US1716476A (en) * 1925-07-18 1929-06-11 Ralph W Austin Fire-extinguishing liquid
US1813367A (en) * 1925-11-24 1931-07-07 Thompson Mfg Co Fire extinguisher
US1908398A (en) * 1930-08-21 1933-05-09 Pyreneminimax Corp Fire extinguishing method
US2308845A (en) * 1940-07-08 1943-01-19 American La France Foamite Foam-type fire extinguisher
BE634504A (fr) * 1962-08-03
DE1794271B2 (de) * 1968-09-30 1974-07-25 Chemische Fabrik Kalk Gmbh, 5000 Koeln Flammschutzkomponente in Formmassen, Formteilen, Lacken, Filmen, Folien und Überzügen aus brennbaren Kunststoffen
JPS5022613B1 (fr) * 1971-06-29 1975-08-01
JPS5393185A (en) * 1977-01-26 1978-08-15 Nippon Oil Co Ltd Water gel composition
US4234432A (en) * 1977-10-26 1980-11-18 Energy And Minerals Research Co. Powder dissemination composition
HU201478B (en) * 1983-04-21 1990-11-28 Magyar Szenhidrogenipari Fire-fighting powder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1588687A (fr) * 1968-10-16 1970-04-17
JPS60142869A (ja) * 1983-12-29 1985-07-29 ヤマト消火器株式会社 消火剤組成物

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 104, no. 16, 21st April 1986, page 154, abstract no. 132486p, Columbus, Ohio, US; & JP-A-60 142 869 (YAMATO SHOKAKI CO., LTD) 29-07-1985 *
CRC Handbook of Chemistry and Physics, R.C. Weast ed., 66th edition (1985 - 1986), page B-79 *
See also references of WO9000423A1 *

Also Published As

Publication number Publication date
EP0376963B1 (fr) 1995-02-15
JPH03500252A (ja) 1991-01-24
EP0376963A4 (en) 1990-12-27
WO1990000423A1 (fr) 1990-01-25
DE3853073T2 (de) 1995-08-10
DE3853073D1 (de) 1995-03-23

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