DE1001117B - Dry extinguishers and process for their manufacture - Google Patents
Dry extinguishers and process for their manufactureInfo
- Publication number
- DE1001117B DE1001117B DED15110A DED0015110A DE1001117B DE 1001117 B DE1001117 B DE 1001117B DE D15110 A DED15110 A DE D15110A DE D0015110 A DED0015110 A DE D0015110A DE 1001117 B DE1001117 B DE 1001117B
- Authority
- DE
- Germany
- Prior art keywords
- formaldehyde
- substances
- dry
- dry extinguishing
- extinguishing agent
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 33
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 18
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 10
- 239000004327 boric acid Substances 0.000 claims description 10
- 239000007859 condensation product Substances 0.000 claims description 9
- 239000004202 carbamide Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 6
- 150000001720 carbohydrates Chemical class 0.000 claims description 4
- 102000004169 proteins and genes Human genes 0.000 claims description 4
- 108090000623 proteins and genes Proteins 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims 2
- 206010039509 Scab Diseases 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 239000006260 foam Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229920001353 Dextrin Polymers 0.000 description 3
- 239000004375 Dextrin Substances 0.000 description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 description 3
- 235000019425 dextrin Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000010428 baryte Substances 0.000 description 2
- 229910052601 baryte Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000014633 carbohydrates Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- DZHMRSPXDUUJER-UHFFFAOYSA-N [amino(hydroxy)methylidene]azanium;dihydrogen phosphate Chemical compound NC(N)=O.OP(O)(O)=O DZHMRSPXDUUJER-UHFFFAOYSA-N 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- QUBQYFYWUJJAAK-UHFFFAOYSA-N oxymethurea Chemical compound OCNC(=O)NCO QUBQYFYWUJJAAK-UHFFFAOYSA-N 0.000 description 1
- 229950005308 oxymethurea Drugs 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000008259 solid foam Substances 0.000 description 1
- 210000004722 stifle Anatomy 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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
- A62D1/0007—Solid extinguishing substances
- A62D1/0014—Powders; Granules
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fireproofing Substances (AREA)
Description
DEUTSCHESGERMAN
Schon lange sind Feuerlöschmittel bekannt, die neben Wasser noch schaumerzeugende Stoffe wie Saponin oder Eiweißverbindungen enthalten. Aus derartigen Löschmitteln wird auf dem Brandherd eine Schauimschicht gebildet, die das Feuer erstickt. Ferner sind Feuerlöschmittel bekannt, die neben Wasser krustenbildende Stoffe wie Wasserglas, Graphit, Schwerspat oder Silikone enthalten. Bei der Anwendung solcher Mittel hat es sich gezeigt, daß in manchen Fällen der Schaum bald zerstört wird oder die Kruste abblättert, so daß nur eine ungenügende oder vorübergehende Löschwirkung erzielt wird. Es sind auch Trockenlöschmittel in Pulverform bekannt, die als wesentlichen Bestandteil z. B. Natriutnbicarbonat enthalten, das unter der Einwirkung von Hitze Kohlensäure frei macht und dadurch die Luftzufuhr zur Flamme unterbindet. Derartige Feuerlöschmittel haben den Nachteil, daß sie nicht auf dem brennenden Gegenstand haftenbleiben und daher keinen länger dauernden Schutz bieten.Fire extinguishing agents have been known for a long time which, in addition to water, also foam-producing substances such as Contain saponin or protein compounds. Such extinguishing agents become one at the source of the fire A layer of show that stifles the fire. Further fire extinguishing agents are known which, in addition to water, contain crust-forming substances such as water glass, graphite, Contains barite or silicone. When using such agents it has been shown that in In some cases the foam is soon destroyed or the crust flakes off, leaving only an insufficient one or temporary extinguishing effect is achieved. Dry extinguishing agents in powder form are also known, as an essential part of z. B. Natriutnbicarbonat, which under the action of Heat releases carbonic acid and thus prevents the air supply to the flame. Such fire extinguishing agents have the disadvantage that they do not adhere to the burning object and therefore do not offer long-term protection.
Es ist ferner bekannt, Kunstharze in Wasser zu lösen oder zu dispergieren und diese Lösungen bzw. Dispersionen, gegebenenfalls nach Zusatz von phosphorsauren Salzen und/oder Boraten und/oder krustenbildenden anorganischen Stoffen und/oder kohlehydrat- und/oder eiweißhaltigen Stoffen als Feuerlöschmittel zu verwenden; der Nachteil dieser Mittel besteht darin, daß sie nicht stabil sind, sondern zu nachträglichen Härtung des gelösten Harzes neigen und damit die Anwendung erschweren.It is also known to dissolve or disperse synthetic resins in water and to use these solutions or Dispersions, optionally after the addition of phosphoric acid salts and / or borates and / or Inorganic crust-forming substances and / or carbohydrate and / or protein-containing substances as To use fire extinguishing agents; the disadvantage of these agents is that they are not stable, but rather tend to subsequent hardening of the dissolved resin and thus make the application more difficult.
Es wurde nun gefunden, daß diese Nachteile vermieden
und eine ausgezeichnete Löschwirkung erzielt wird, wenn man Trockenlöschmittel verwendet, die in
feinverteilter Form neben Kondensationsprodukten von Harnstoff mit Formaldehyd noch Phosphorsäure
und/oder Borsäure, ihre Verbindungen oder ihre Additionsprodukte mit den Kondensationsprodukten
enthalten. Derartige Trockenlöschmittel bilden beim Auftreffen auf den Brandherd einen gut haftenden,
sehr zähen und schwer zerstörbaren kohlenstoffhaltigen Schaum, der der Luft den Zutritt verwehrt,
dadurch die Flamme zum Erlöschen bringt und ein Weiterbrennen des Brandgutes unterdrückt. Gleichzeitig
wird durch die ausgezeichnete Wärmeisolierung ein Wiederaufflammen des brennbaren Materials verhindert.
Vermutlich entsteht der Schaum so, daß das Kondensationsprodukt unter dem Einfluß der Hitze
in einen zähflüssigen Zustand übergeht und in diesem Zustand durch Gase, die bei der Hitze unter der Einwirkung
der Phosphorsäure oder der Borsäure entstehen, in Schaum übergeführt wird; gleichzeitig
findet eine wenigstens teilweise Zersetzung des Kondensationsproduktes statt, die einerseits ein kohlenstoffreicheres
Material entstehen läßt, andererseits.,, Trockenlöschmittel und Verfahren
zu ihrer HerstellungIt has now been found that these disadvantages are avoided and an excellent extinguishing effect is achieved if dry extinguishing agents are used which, in finely divided form, contain condensation products of urea with formaldehyde, phosphoric acid and / or boric acid, their compounds or their addition products with the condensation products. When they hit the source of the fire, such dry extinguishing agents form a well-adhering, very tough and difficult-to-destroy carbon-containing foam, which prevents the air from entering, thereby extinguishing the flame and suppressing any further burning of the material. At the same time, the excellent thermal insulation prevents the combustible material from flaring up again. Presumably the foam arises in such a way that the condensation product changes into a viscous state under the influence of heat and in this state is converted into foam by gases which are formed during the heat under the action of phosphoric acid or boric acid; At the same time, at least partial decomposition of the condensation product takes place, which on the one hand allows a higher carbon material to develop, on the other hand. "Dry extinguishing agents and processes
for their manufacture
Anmelder:Applicant:
Deutsche Gold- und Silber-ScheideanstaltGerman gold and silver refinery
vormals Roessler, Frankfurt/M.,formerly Roessler, Frankfurt / M.,
Weißfrauenstr. 9Weißfrauenstr. 9
Dr. Wilhelm Schulenburg, Frankfurt/M.,
ist als Erfinder genannt wordenDr. Wilhelm Schulenburg, Frankfurt / M.,
has been named as the inventor
durch Gasentwicklung selbst zu der Schaumbildung beiträgt.contributes to the formation of foam itself through the development of gas.
An Stelle von Formaldehyd können auch Form^ aldehyd liefernde Stoffe, z. B. Parafccmaldehyd oder Hexamethylentetramin, verwendet werden. An Stelle von Harnstoff kann man auch seine Derivate, z. B. Thioharnstoff, Dicyandiamid, Melamin, Guanidin, verwenden.In place of formaldehyde, form ^ aldehyde-supplying substances such. B. Parafccmaldehyde or Hexamethylenetetramine can be used. Instead of urea, you can also use its derivatives, e.g. B. Use thiourea, dicyandiamide, melamine, guanidine.
An Stelle der Phosphorsäure oder der Borsäure können auch ihre Verbindungen, z. B. ihre Salze, verwendet werden. Als besonders geeignet haben sich z. B. die Ammoniumsalze der Phosphorsäure erwiesen, die in der Hitze unter Abspaltung von Ammoniak und Wasserdampf bei der Schaumbildung mithelfen. Mit gutem Erfolg kann man z. B. auch die Additionsprodukte von Phosphorsäure oder Borsäure an Harnstoff-Formaldehyd-Harze brauchen.Instead of phosphoric acid or boric acid, their compounds, e.g. B. their salts are used will. As have been particularly suitable, for. B. the ammonium salts of phosphoric acid have been proven, those in the heat with the elimination of ammonia and water vapor during foam formation help along. With good success you can z. B. also the addition products of phosphoric acid or boric acid need of urea-formaldehyde resins.
Es hat sich gezeigt, daß besonders gute Wirkungen erzielt werden, wenn das Trockenlöschmittel auf 1 Teil des Harnstoff-Formaldehyd-Kondensationsprod'uktes 1 bis 4 Teile Phosphorsäure oder Borsäure oder ihre Verbindungen enthält.It has been shown that particularly good effects are achieved when the dry extinguishing agent on 1 part of the urea-formaldehyde condensation product 1 to 4 parts of phosphoric acid or boric acid or contains their compounds.
In manchen Fällen ist es zweckmäßig, den Kohlenstoffgehalt des sich in der Hitze bildenden Schaumes dadurch zu erhöhen, daß den anderen Bestandteilen Kohlehydrate, z. B. Stärke, Zucker, Dextrin oder CellulO'Severbindungen, und/oder eiweißhaltige Stoffe, z. B. Leim, zugesetzt werden. Der Zusatz dieser Stoffe soll aber nicht mehr als 0,7 Teile auf 1 Teil Phosphorsäure oder Borsäure oder ihrer Verbindungen betragen. In some cases it is useful to check the carbon content of the foam that forms in the heat to increase by adding carbohydrates to the other ingredients, e.g. B. starch, sugar, or dextrin CellulO'Severbindungen, and / or protein-containing substances, z. B. glue can be added. The addition of these substances but should not be more than 0.7 parts to 1 part of phosphoric acid or boric acid or their compounds.
Außer den genannten Stoffen können die Trockenlöschmittel gemäß der Erfindung noch weitere be-In addition to the substances mentioned, the dry extinguishing agents according to the invention can also contain other
609 766/269609 766/269
kannte anorganische krustenbildende Stoffe in fein- verteilter Form enthalten, z. B. Asbestmehl, Kieselgur, Gips, Schwerspat od. dgl.contain known inorganic crust-forming substances in finely divided form, e. B. asbestos flour, kieselguhr, Plaster of paris, barite or the like.
Zur Herstellung der erfindungsgemäßen Trockenlöschmittel verfährt man zweckmäßig so, daß Harnstoff oder seine Derivate mit Formaldehyd oder Formaldehyd liefernden Stoffen kondensiert werden. Das Kondensationsprodukt wird darauf gehärtet, zerkleinert und mit den anderen Bestandteilen, vermischt. Man kann auch so verfahren, daß-die Kondensation des Foirmaldehyds oder der Formaldehyd liefernden Stoffe mit Harnstoff oder seinen Derivaten in Gegenwart eines oder mehrerer der übrigen festen Bestandteile des Trockenlöschmittels durchgeführt wird. Diese Mischung wird dann gehärtet und zerkleinert und kann gegebenenfalls noch mit anderen festen Bestandteilen vermengt werden.For the production of the dry extinguishing agent according to the invention one proceeds appropriately so that urea or its derivatives with formaldehyde or Formaldehyde-producing substances are condensed. The condensation product is then hardened, crushed and mixed with the other ingredients. One can also proceed in such a way that-condensation of the formaldehyde or the formaldehyde-supplying substances with urea or its derivatives in the presence one or more of the remaining solid components of the dry extinguishing agent is carried out. This mixture is then hardened and crushed and can optionally also be mixed with other solid components be mixed up.
2020th
1. Ein Harnstoff-Formaldehyd-Harz, erhalten durch Kondensation von 1 Mol Harnstoff mit 2,5 Mol Formaldehyd als Paraformaldehyd in Gegenwart von 0,5 Mol Phosphorsäure, wird feinst gemahlen, so daß es ohne Rückstand ein Sieb von mindestens DIN 40 (1600 Maschen/cm2) passiert, und mit Monoammonphosphat gleicher Korngröße im Verhältnis 1:2,5 unter Zusatz von 7 % Dextrinpulver innig gemischt.1. A urea-formaldehyde resin, obtained by condensing 1 mol of urea with 2.5 mol of formaldehyde as paraformaldehyde in the presence of 0.5 mol of phosphoric acid, is finely ground so that there is a sieve of at least DIN 40 (1600 Meshes / cm 2 ) and intimately mixed with monoammonophosphate of the same grain size in a ratio of 1: 2.5 with the addition of 7% dextrin powder.
2. 600 g eines Kondensationsproduktes aus Dicyandiamid und Formaldehyd werden mit 1200 g Diammonphosphat, 50 g Borsäure und 140 g löslicher Stärke feinst vermählen, durch ein Sieb von 1400 Maschen/cm2 gestrichen und mit 70 g feinstgemahlenem Gips vermischt. 2. 600 g of a condensation product of dicyandiamide and formaldehyde are finely ground with 1200 g of diammonophosphate, 50 g of boric acid and 140 g of soluble starch, passed through a sieve of 1400 mesh / cm 2 and mixed with 70 g of finely ground gypsum.
3. 300 g Dimethylolharnstoff, 50 g Harnstofforthophosphat, 350 g Monoammonphosphat, 75 g Asbestmehl und 150 g Dextrin werden gut gemischt und feinst vermählen, so daß das Gemisch ohne Rückstand ein Sieb von 1600 Maschen/cm2 passiert. Es bildet, durch Kohlensäuredruck auf den Brandherd geschleudert, eine flammenerstickende feste Schaumschicht. 3. 300 g of dimethylolurea, 50 g of urea orthophosphate, 350 g of monoammonophosphate, 75 g of asbestos flour and 150 g of dextrin are mixed well and finely ground so that the mixture passes through a 1600 mesh / cm 2 sieve without residue. When it is thrown at the source of the fire by the pressure of carbonic acid, it forms a flame-suffocating solid foam layer.
Claims (7)
Französische Patentschrift Nr. 910 468.Publications considered:,
French patent specification No. 910 468.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED15110A DE1001117B (en) | 1953-05-22 | 1953-05-22 | Dry extinguishers and process for their manufacture |
| GB1072154A GB760510A (en) | 1953-05-22 | 1954-04-12 | Fire-extinguishers |
| FR1116119D FR1116119A (en) | 1953-05-22 | 1954-05-21 | Extinguishing agents and process for their production |
| DED22944A DE1019181B (en) | 1953-05-22 | 1956-05-12 | Dry chemical |
| FR71283D FR71283E (en) | 1953-05-22 | 1957-04-23 | Extinguishing agents and process for their production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED15110A DE1001117B (en) | 1953-05-22 | 1953-05-22 | Dry extinguishers and process for their manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1001117B true DE1001117B (en) | 1957-01-17 |
Family
ID=7034946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DED15110A Pending DE1001117B (en) | 1953-05-22 | 1953-05-22 | Dry extinguishers and process for their manufacture |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1001117B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1138323B (en) * | 1960-03-25 | 1962-10-18 | Concordia Elek Zitaets Ag | Dry powder |
| DE1219331B (en) * | 1964-11-13 | 1966-06-16 | Feuerloeschgeraetewerk Veb | Universal extinguishing powder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR910468A (en) * | 1944-05-26 | 1946-06-07 | Ste Ind Chim Bale | Product suitable for forming foam and suitable for extinguishing fire |
-
1953
- 1953-05-22 DE DED15110A patent/DE1001117B/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR910468A (en) * | 1944-05-26 | 1946-06-07 | Ste Ind Chim Bale | Product suitable for forming foam and suitable for extinguishing fire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1138323B (en) * | 1960-03-25 | 1962-10-18 | Concordia Elek Zitaets Ag | Dry powder |
| DE1219331B (en) * | 1964-11-13 | 1966-06-16 | Feuerloeschgeraetewerk Veb | Universal extinguishing powder |
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