DE668276C - Production of fire extinguishing foam - Google Patents
Production of fire extinguishing foamInfo
- 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
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
- A62D1/0078—Foams 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)
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)
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)
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 |
-
1935
- 1935-08-01 GB GB2184535A patent/GB460596A/en not_active Expired
- 1935-08-21 FR FR805831D patent/FR805831A/en not_active Expired
-
1936
- 1936-02-23 DE DEI54412D patent/DE668276C/en not_active Expired
- 1936-08-06 FR FR47595D patent/FR47595E/en not_active Expired
Cited By (1)
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 |
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