BE434153A - - Google Patents
Info
- Publication number
- BE434153A BE434153A BE434153DA BE434153A BE 434153 A BE434153 A BE 434153A BE 434153D A BE434153D A BE 434153DA BE 434153 A BE434153 A BE 434153A
- Authority
- BE
- Belgium
- Prior art keywords
- foam
- proteins
- producing agent
- solution
- aluminum
- Prior art date
Links
- 239000006260 foam Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 102000004169 proteins and genes Human genes 0.000 claims description 5
- 108090000623 proteins and genes Proteins 0.000 claims description 5
- 102000011782 Keratins Human genes 0.000 claims description 3
- 108010076876 Keratins Proteins 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- -1 aluminum compound Chemical class 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000015450 Tilia cordata Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 235000005985 organic acids Nutrition 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims 1
- 239000004088 foaming agent Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K Aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- VXYADVIJALMOEQ-UHFFFAOYSA-K tris(lactato)aluminium Chemical compound CC(O)C(=O)O[Al](OC(=O)C(C)O)OC(=O)C(C)O VXYADVIJALMOEQ-UHFFFAOYSA-K 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing Compositions (AREA)
- General Preparation And Processing Of Foods (AREA)
Description
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" Procédé pour la préparation d'un agent producteur de mousse ".
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L'invention se rapporte à un procédé pour la prépara- tion d'un agent producteur de mousse, en particulier pour l'obtention de mousse d'air destinée à l'extinction des in- cendies. L'agent producteur de mousse préparé d'après le procédé suivant l'ninvention se distingue des agents pro- ducteurs de mousse employés habituellement jusqu'ici pour produire de la mousse d'air, particulièrement en ce que les mousses obtenues avec lui présentent une stabilité et une capacité de résistance à la ohaleur et à d'autres influen- ces physiques et chimiques notablement supérieures à cel- les des mousses connues jusqu'à présent.
En conséquence l'agent producteur de mousse préparé d'après le procédé suivant l'invention convient particulièrement pour les cas où il faut combattre des corps enflammés difficiles à étein- dre, comme par exemple de l'alcool, des hydrocarbures aro- matiques et d'autres corps analogues.
Le procédé suivant l'invention consiste en ce qu'à
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un agent producteur de mousse obtenu par attaque de protêi- nes ou de corps contenant une ou plusieurs protéines,on ajoute un faible pourcentage d'un composé soluble d'alu- minium. Il est apparu que des additions déjà très petites de composés d'aluminium appropriés suffisent à accroître
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notablement la stabilité de mousses pouvant être préparées Corbonamt au moyen de substanceSyae6protêines.
Le procédé suivant l'invention peut être réalisé par exemple de la manière suivante : un ajoute en l'agitant une solution préparée par dissolution de 20 gr. d'hydroxyde d'aluminium dans la quantité nécessaire d'acide acétique , à 1000 gr. d'une so- lution neutre, désulfurée et épaissie jusqu'à atteindre le poids spécifique de 1,15, d'agent producteur de mousse obtenue-par l'attaque de 500 gr. de substance contenant une ou plusieurs kératines au moyen de 75 gr. de chaux, et on neutralise par addition de lessive de soude.
500 gr. de cette solution d'agent producteur de mous- se dissous dans 10 litres d'eau donnent, lors de la trans- formation en mousse au moyen d'un générateur de mousse d'air approprié, une mousse extrêmement tenace, qui se sépare du liquide qui y est contenu environ deux à trois fois plus lente:'lent qu'une mousse obtenue dans les mêmes conditions d'une solution de force égale sans ad@i- tion de sel d'aluminium. Le sel d'aluminium peut toutefois être ajouté l'agent producteur de mousse sous une autre forme aussi, par exemple sous forme de lactate d'aluminium.
Bien qu'il soit sans influence essentielle sur les proprié-
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tés te léo zaousse produire, qu'on emploie des sels d'alu- minium d'acides inorganiques ou organiques, l'emploi de sels d'acides organiques s'est cependant révélé partieu- ,lièrement convenable.
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"Process for the Preparation of a Foaming Agent".
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The invention relates to a process for the preparation of a foam-producing agent, in particular for obtaining air foam intended for extinguishing fires. The foam-producing agent prepared according to the process according to the invention differs from the foam-producing agents heretofore usually employed for producing air foam, particularly in that the foams obtained therewith exhibit a high quality. significantly better stability and resistance to heat and other physical and chemical influences than foams heretofore known.
The foam-producing agent prepared according to the process according to the invention is therefore particularly suitable for those cases where it is necessary to combat flaming bodies which are difficult to extinguish, such as, for example, alcohol, aromatic hydrocarbons and others. other analogous bodies.
The method according to the invention consists in that
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a foaming agent obtained by attacking proteins or bodies containing one or more proteins, a small percentage of a soluble aluminum compound is added. It has been found that already very small additions of suitable aluminum compounds suffice to increase
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notably the stability of foams which can be prepared Corbonamt by means of substanceSyae6protêins.
The process according to the invention can be carried out, for example, in the following manner: one adds, while stirring, a solution prepared by dissolving 20 g. of aluminum hydroxide in the necessary amount of acetic acid, at 1000 gr. of a neutral solution, desulphurized and thickened until reaching the specific weight of 1.15, of foam-producing agent obtained by attacking 500 gr. of substance containing one or more keratins by means of 75 gr. lime, and neutralized by adding sodium hydroxide solution.
500 gr. of this solution of foaming agent dissolved in 10 liters of water gives, on conversion to foam by means of a suitable air foam generator, an extremely tenacious foam, which separates from the foam. liquid contained therein about two to three times slower than a foam obtained under the same conditions from a solution of equal strength without the addition of aluminum salt. The aluminum salt can, however, be added the foaming agent in another form as well, for example in the form of aluminum lactate.
Although it has no essential influence on the properties
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However, whether aluminum salts of inorganic or organic acids are used, the use of organic acid salts has proved particularly suitable.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE434153A true BE434153A (en) |
Family
ID=93369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE434153D BE434153A (en) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE434153A (en) |
-
0
- BE BE434153D patent/BE434153A/fr unknown
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