DE668276C - Production of fire extinguishing foam - Google Patents

Production of fire extinguishing foam

Info

Publication number
DE668276C
DE668276C DEI54412D DEI0054412D DE668276C DE 668276 C DE668276 C DE 668276C DE I54412 D DEI54412 D DE I54412D DE I0054412 D DEI0054412 D DE I0054412D DE 668276 C DE668276 C DE 668276C
Authority
DE
Germany
Prior art keywords
production
fire extinguishing
extinguishing foam
foam
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.)
Expired
Application number
DEI54412D
Other languages
German (de)
Inventor
Dr Karl Daimler
Dr Max Paquin
Dr Walter Riedelsberger
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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
Priority to GB2184535A priority Critical patent/GB460596A/en
Priority to FR805831D priority patent/FR805831A/en
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI54412D priority patent/DE668276C/en
Priority to FR47595D priority patent/FR47595E/en
Application granted granted Critical
Publication of DE668276C publication Critical patent/DE668276C/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0071Foams
    • A62D1/0078Foams containing proteins or protein derivatives

Description

Herstellung von Feuerlöschschaum Feuerlöschschaum wird zweckmäßig aus einem wäßrigen Medium und Luft oder anderen Gasen in der Weise erzeugt, daß man aus einem Netzmittel und einem abgebauten Eiweißstoff eine hochkonzentrierte Stammlösung (Schaumextrakt) herstellt, die erst im Bedarfsfall mit dem Löschwasser verdünnt und verschäumt wird.Production of fire extinguishing foam Fire extinguishing foam becomes appropriate generated from an aqueous medium and air or other gases in such a way that a wetting agent and a degraded protein make a highly concentrated one Stock solution (foam extract), which is only added to the extinguishing water when necessary is diluted and foamed.

Es wurde gefunden, daß man hierbei mit besonderem Vorteil solche Abbaustoffe des Eiweißes verwendet, die in an sich bekannter Weise mit Kalilauge oder alkalisch reagierenden Kalisalzen aufgeschlossen sind. Diese Eiweißabbaustoffe sind überraschenderweise wesentlich geeigneter für diesen Zweck als die mit anderen Alkalien aufgeschlossenen Produkte. Gegenüber sauer abgebauten zeigen sie keinerlei korrodierende Wirkung auf Metalle, insbesondere auf Leichtmetalle, weil sie frei von Ammoniumsalzen sind. Als für den Aufschluß geeignete Kalisalze seien genannt: Trikaliumphosphat, Kaliwasserglas, Kaliumhypochlorit, Kaliumborat u. dgl.It has been found that such degradation substances are particularly advantageous here of the protein used in a known manner with potassium hydroxide or alkaline reacting potash salts are open. These protein breakdowns are surprising much more suitable for this purpose than those digested with other alkalis Products. They show no corrosive effect whatsoever when compared with acidic degradation on metals, especially light metals, because they are free of ammonium salts. Potassium salts suitable for digestion include: tripotassium phosphate, potassium water glass, Potassium hypochlorite, potassium borate and the like.

Beispiel Bei 7ö° wird eine etwa 5o%ige wäßrige Lösung von Eiweiß hergestellt, worauf man mit o, i Gewichtsteil Kalilauge von 50° B6 versetzt. Es wird dann bei etwa ioo° gerührt, wobei sich die Zeit dieser alkalischen Behandlung nach dem Viscositätsgrad richtet, den später das fertige Produkt haben soll. Dann werden nochmals o,5 Gewichtsteile Wasser zugegeben und schließlich o,5 Gewichtsteile einer substituierten Naphthalinsulfosäure, worauf man mit Kalilauge neutralisiert.Example At 70 ° an approximately 50% aqueous solution of egg white is prepared, whereupon 0.1 part by weight of 50 ° B6 potassium hydroxide solution is added. It will then be at about 100 ° stirred, the time of this alkaline treatment depending on the degree of viscosity that the finished product should have later. Then another 0.5 parts by weight Water added and finally 0.5 parts by weight of a substituted naphthalene sulfonic acid, whereupon you neutralize with potassium hydroxide solution.

2 kg dieses Erzeugnisses, in Leitungsvasser gelöst, geben in einer gebräuchlichen Luftschaumpumpe etwa, i,4 cbm eines zähen hitzebeständigen Schaumes. 2 kg of this product, dissolved in tap water, give about 1.4 cbm of a tough, heat-resistant foam in a conventional air foam pump.

Claims (1)

PATRNTANSPRUCII: Verfahren zur Herstellung von Feuerlöschschaum aus hochkonzentrierten, Netzmittel und Eiweißsubstanzen enthaltenden Stanunlösungen, Löschwasser und Luft oder Gasen, dadurch gekennzeichnet, daß zur Herstellung der hochkonzentrierten wäßrigen Lösungen solche wasserlösliche Eiweißprodukte verwendet werden, die mit Kalilauge -oder einem alkalisch reagierenden Kalisalz aufgeschlossen sind.PATRNTANSPRUCII: Process for the production of fire-fighting foam from highly concentrated solutions containing wetting agents and protein substances, Extinguishing water and air or gases, characterized in that for the production of the such water-soluble protein products are used in highly concentrated aqueous solutions are digested with potassium hydroxide or an alkaline potassium salt are.
DEI54412D 1936-02-23 1936-02-23 Production of fire extinguishing foam Expired DE668276C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2184535A GB460596A (en) 1936-02-23 1935-08-01 Preparations for use in the production of foam
FR805831D FR805831A (en) 1936-02-23 1935-08-21 Foam preparation process applicable to extinguishing fire
DEI54412D DE668276C (en) 1936-02-23 1936-02-23 Production of fire extinguishing foam
FR47595D FR47595E (en) 1936-02-23 1936-08-06 Foam preparation process applicable to extinguishing fire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI54412D DE668276C (en) 1936-02-23 1936-02-23 Production of fire extinguishing foam

Publications (1)

Publication Number Publication Date
DE668276C true DE668276C (en) 1938-11-30

Family

ID=10169774

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI54412D Expired DE668276C (en) 1936-02-23 1936-02-23 Production of fire extinguishing foam

Country Status (3)

Country Link
DE (1) DE668276C (en)
FR (2) FR805831A (en)
GB (1) GB460596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE945488C (en) * 1951-10-25 1956-07-12 Total Foerstner & Co Stabilizer for fire-extinguishing foams based on protein and method for its use for the purpose of producing foams that are resistant to foam-destroying liquids

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012184B (en) * 1952-05-19 1957-07-11 Pyrene Co Ltd Frost-proof method for mechanical foam generation, especially for fire extinguishing purposes
IT1264588B1 (en) * 1993-06-11 1996-10-04 Silvani Antincendi Spa Ora San FOAMING COMPOSITION TO REDUCE THE PRESSURE ASSOCIATED WITH THE SHOCK WAVE GENERATED BY EXPLOSIONS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE945488C (en) * 1951-10-25 1956-07-12 Total Foerstner & Co Stabilizer for fire-extinguishing foams based on protein and method for its use for the purpose of producing foams that are resistant to foam-destroying liquids

Also Published As

Publication number Publication date
GB460596A (en) 1937-02-01
FR805831A (en) 1936-12-01
FR47595E (en) 1937-06-04

Similar Documents

Publication Publication Date Title
AT138390B (en) Process for the preparation of tanning agents.
DE668276C (en) Production of fire extinguishing foam
DE605445C (en) Process for the production of oxydiphenylsulfonic acids
DE687462C (en) Process for the production of capillary-active sulfuric acid derivatives of aliphatic compounds
DE698318C (en) Process for the preparation of 2-oxynaphthalenesulfonic acids and their substitution products
DE419364C (en) Process for the production of colloidal metals or their compounds
DE687153C (en) Process for fixing tanning agents in leather
DE433479C (en) Process for stabilizing luminous colors
AT88628B (en) Process for the production of propanetriol from sugar.
DE625996C (en) Process for the preparation of aminopyrene sulfonic acids
AT150297B (en) Process for the preparation of unsymmetrical aromatic arsenic compounds.
DE561628C (en) Process for the preparation of a mercury compound of podophyllin
DE681158C (en) Production of stable foam
DE1492652C3 (en) Process for the production of a lecithin emulsion for coating fruits, vegetables and other vegetable products
DE522524C (en) Pest repellant
DE738369C (en) Process for the manufacture of a condensation product from naphthalenesulfonic acid
AT132707B (en) Process for the preparation of organic bromine derivatives.
DE695317C (en) Process for obtaining the adenosine from the corresponding picrate
CH179654A (en) Process for the preparation of a new quaternary salt.
CH138219A (en) Process for the production of a new metal-containing dye.
CH115109A (en) Process for the preparation of 2-aminonaphthalene-1-carboxylic acid.
CH169688A (en) Method of making a casein solution.
CH203943A (en) Process for the preparation of aqueous solutions of sulfur in elemental form.
CH181159A (en) Process for the preparation of a new heterocyclic sulfonic acid.
CH163448A (en) Process for obtaining a durable derivative of cyclohexenyl-ethyl-barbituric acid.