WO1992013602A1 - Fire extinguishing and protection agent - Google Patents
Fire extinguishing and protection agent Download PDFInfo
- Publication number
- WO1992013602A1 WO1992013602A1 PCT/DE1992/000070 DE9200070W WO9213602A1 WO 1992013602 A1 WO1992013602 A1 WO 1992013602A1 DE 9200070 W DE9200070 W DE 9200070W WO 9213602 A1 WO9213602 A1 WO 9213602A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- thickened
- fire
- production
- extinguishing
- Prior art date
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
- A62D1/0064—Gels; Film-forming compositions
-
- 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
- A62D1/005—Dispersions; Emulsions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/266—Esters or carbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3227—Ethers thereof
Definitions
- water As an extinguishing agent, water has the advantages of the high heat absorption capacity and thus the favorable cooling effect, the non-existent toxicity, the compatibility with many combustible substances, the value for money and mostly good availability. It is therefore still very important as a fire extinguishing agent.
- Incombustible mineral additives to the extinguishing water are also used, e.g. water-soluble inorganic salts or water-insoluble minerals such as bentonite or attapulgite.
- water-soluble inorganic salts or water-insoluble minerals such as bentonite or attapulgite.
- the reasons for this are, for example, the generally high proportions by weight of the mineral additives required to achieve a sufficiently high thickening (e.g. 10-20% by weight). %), of corrosive effects of certain salts such as sulfates or chlorides or the possibility of undesired environmental influences occurring, for example of fertilizer-active components, the quantity application of which can be several times per area when extinguishing a forest fire than when applying fertilizer in agriculture.
- the preparation of such thickened special extinguishing agents usually requires special equipment, especially for their mixture.
- silicas in the form of aqueous slurries have found use as such as fire extinguishing agents.
- the pyrogenic silica is only described as a powdery special extinguishing agent for special fire situations (EUR 0339 162 AI or EUR 0311 006 AI). Due to the property of their extreme lightness, their general use as an extinguishing agent is not practical.
- the object is therefore to provide an improved fire extinguishing agent of the type of a thickened extinguishing water, in particular with a small amount by weight of synthetic amorphous silica or other, non-combustible, broadly contractual minerals in the form of their slurry in water to thicken, which is instantaneous and controllable, gives a defined and durable final state and is not thixotropized by the spraying process so that its adhesive effect is impaired. Furthermore, it should be easy to use with conventional fire extinguishers and require no special facilities for its preparation, and should have good adhesive properties even on vertical or downward-facing surfaces, especially at elevated temperatures. Above all, however, their extinguishing effect should be clearly superior to that of water.
- Silicic acid in water by adding powdered pyrogenic silicic acid with water and a compound of the type of a polyethylene glycol with a molecular weight> 700 - ⁇ 600,000, derivatives of polyethylene glycol such as its ethers with fatty alcohols, its esters with fatty acids, ethers with carbohydrates of the molecular weights of 300 or larger and with polyethyleneimine is possible.
- the required silica concentrations in water are only very low, they are only a fraction of the proportions otherwise required for thickening in aqueous slurry, namely 1-7% compared to> 10% otherwise.
- the additives mentioned can be added to the low-viscosity slurry of silica in water, but can also be premixed dry with the water itself, but also with the silica.
- a thickened extinguishing water which can be used at the moment and which is thickened significantly in a controlled manner, for example by the shear effect present in a fire extinguishing pump, without the spraying performance suffering as a result.
- the flow properties of the extinguishing water thickened in this way improve its spraying properties, for example its throwing distance or the lower frictional losses, in comparison to ordinary water.
- the water thickened as described has a number of essential advantages, such as good sprayability or sprayability by means of various types of fire extinguishing syringes according to DIN (bucket sprayer / TS 2/5) also by means of a high pressure pump with a working pressure of 100 bar, applicability from handheld fire extinguishers Adhesion of even thick layers of extinguishing agent of several centimeters in thickness up to evaporation or drying, even on vertical and downward-facing surfaces of different materials and properties. After the fire fighting measures have been completed, the extinguishing agent can be removed easily and without damaging the respective substrates, e.g. by hosing down with water or by vacuuming with a standard industrial vacuum cleaner. Because most of it thickened
- Extinguishing water is not lost due to running, it can be taken up again after the extinguishing process and thus contamination of the environment is limited by fire products which may run off with the extinguishing water or water damage to buildings become.
- the remaining silica gel has adsorbing properties, which can also be advantageous, for example, for absorbing decomposition products from the firing process or other impurities. It is particularly advantageous to utilize this property of the fire extinguishing agent according to the invention by sucking in the dry premix of the amorphous silica with the thickener into a stream of extinguishing water, the desired thickening currently occurring. It is noteworthy that an addition of little more than 1%, for example pyrogenic silica, into the water is sufficient for this.
- silica in water can also be advantageous for certain applications, for example to create a barrier with the extinguishing agent against the uncontrolled drainage of liquids from the fire area or to use the absorbing effect of the silica for any existing pollutants.
- pastes which can no longer be applied form with the customary extinguishing devices, but which can be used as fire protection compositions, since they maintain their homogeneity even with a high water content and low silica content.
- a silica gel obtained from water glass by neutralization and washing or by ion exchange and set in paste form is only shortly after
- the fire protection composition produced according to the invention avoids this phenomenon with a high water and low solids content.
- These fire protection compounds are versatile for the preventive fire protection of combustible
- the "thickening additives" used according to the invention are required in all cases only in extremely low weight concentrations. With preferably used proportions of only 0.003-0.256 based on the total amount, they almost do not fall more weight.
- Various of the thickening additives described are usually used as emulsifiers, for example for fats, waxes or as special surfactants.
- the "flocculation" of silica with polyglycol is considered useful, for example, for water clarification.
- the described thickening no longer occurs at concentrations of the thickening additives of the polyether type of above certain limits (> 1.5%) or that the addition of amounts of concentrations of thickening additives above these values overall of the polyether type to slurries which have already thickened causes their permanent permanent dilution. In practice, however, this is not a problem since the addition can be easily controlled.
- polyethers as thickening additives are weakly alkaline compounds, such as the bicarbonates. These are compatible with the thickened slurries of amorphous synthetic silica in any soluble concentration. Potassium bicarbonate, for example, can be added up to its saturation concentration of approximately 34%. When extinguished, these bicarbonates can decompose and release carbon dioxide, which increases the extinguishing effect.
- the thickened slurries of amorphous, synthetic silica according to the invention are also compatible with other, not strongly alkaline salts, for example the preparation can also be carried out without difficulty with sea water, or potassium sulfate, ammonium phosphate or boric acid can be dissolved in the thickened slurry.
- thickening additive causes polyethyleneimine to have a durable thickening effect in the aqueous silica slurry in all alkaline areas
- a re-liquefaction can be determined in the strongly acidic area with polyethyleneimine. Acidic conditions are avoided anyway in order to avoid corrosion. If required, however, a combination of both thickening additives is possible, which can be used to thicken in the acidic and alkaline range.
- the thickening effect described is particularly pronounced with pyrogenic silica. As shown in the examples, the concentrations required for precipitated silicas to achieve a significant thickening are significantly higher (5-15%) and the adhesion effect is less good.
- Precipitated silicas are cheaper than pyrogenic silicas.
- silica sols for example made from water glass by neutralization, if a homogeneously thickened slurry could be produced therefrom without great expenditure of time and process.
- silica sols if they are not stabilized, tend to gel, that is to say to form a coherent gel these jellies are unsuitable for the task at hand here because their adhesion to surfaces is poor and they excrete the water they contain over time and gradually harden them. In general, their particles cannot be shifted against each other even when they are formed, which means that there are no flow properties.
- suitable thickened aqueous silica slurries can be partially prepared for the fire-fighting task presented here.
- Extinguishing agents useful thickened slurries are transferred to water, and show good adhesion to surfaces.
- the known thickeners such as gums, polyacrylamide, polyoxyethylenes of molecular weights> 600,000 or at least gelatin in the low concentrations of bentonite described here.
- Frost effects were determined by adding compounds of the glycol or glycerol type. Compounds such as borates that are effective as antifreeze or corrosion protection can also be used, if necessary. It has been found that a considerable addition of these compounds as antifreeze does not impair the thickening effect or the durability of the thickened fire extinguishing agents described.
- Example 1 (general preparation example) 4-10 g of pyrogenic silica (Aerosil 200, reg. Trademark. Degussa, Germany) are suspended in 190-196 ml of water while stirring. The resulting suspensions are thin with a pH of around 5. If they are not stirred vigorously, their run-down times in the DIN cup (4 mm nozzle) are 9-11 seconds, only if there are still light ones
- Lumps can take up to 14 seconds to flow out. If you stir them with an electric stir bar (approx. 800 rpm), they become even thinner with a flow time of 9 seconds, comparable to the viscosity of the water.
- a few drops of polyoxyethylene lauryl ether with a molecular weight of approximately 380 or a 50% aqueous solution of polyethylene glycol with a molecular weight of 4220 or a 50% aqueous solution of polyoxyethylene sorbitan monostearate with a molecular weight of approximately 1200 or a concentrated solution of are added to these suspensions PEG-120 jojoba acid and PEG-120 jojoba alcohol (mainly eicosenyl or docosenylic acid / alcohol from jojoba oil, ethoxylated), or a 20% polyethylene solution (Polymin SK, reg.
- the thickened slurries of silicic acid obtained in this way which can be stored for a long time, are subjected to a brief, vigorous stirring action (for example with an electric stir bar), the thickening increases markedly and is retained in this reinforced form.
- Spraying of these laboratory approaches is easily possible with a pump spray bottle with or without an atomizing nozzle.
- surfaces such as wood, raw or lacquered, plastic, rubber, glass or metal, unproblematic adhesion is possible even in thicker layers, without the layer changing due to spreading, slipping or any other way of causing fire extinguishing. This applies in particular to hot surfaces where no slipping can be detected.
- the sprayed or sprayed surfaces dry within 12-48 hours depending on the layer thickness and environmental conditions. The remaining dry, mostly flaky silica is easily removed mechanically from the surfaces and can be brushed out well, for example, from tissues.
- pyrogenic silica 4-10 g are mixed with 0.3 g of polyoxyethylene lauryl ether or polyethylene glycol with a molecular weight of 4220, or polyethylene glycol sorbitan monostearic acid ester (molecular weight approx. 1200) or PEG-120 jojoba acid and PEG-120 jojoba alcohol or polyethyleneimine, so that a dry premix is formed .
- polyoxyethylene lauryl ether or polyethylene glycol with a molecular weight of 4220 or polyethylene glycol sorbitan monostearic acid ester (molecular weight approx. 1200) or PEG-120 jojoba acid and PEG-120 jojoba alcohol or polyethyleneimine, so that a dry premix is formed .
- an electric stir bar blade diameter 3.5 cm, approx.
- a dry premix of pyrogenic silica (97 g) and polyoxyethylene lauryl ether (3 g) obtained according to this example is poured into a storage vessel and placed over a suction hose, which is fed into a running water stream via a pipe connection, by means of a light Vacuum sucked into this water flow, whereupon mixing and thickening occur, so that the water emerging just a few centimeters after the mixing point from a slightly narrowed glass nozzle already had excellent adhesion to a glass surface.
- the suction side of a water jet pump can also be used to suck in the dry premix, wherein the suction of the powdery premix can be continued for a long time without problems or blockages.
- the thickening method can be controlled as desired by appropriately dimensioning the intake feeds, regulating the water quantity and the water pressure. A useful thickening according to this procedure is achieved, for example, with a silica concentration of only 1.3% in water.
- the thickened silicic acid slurries obtained according to Examples 1 and 2 were each mixed with 5% by weight of sodium carbonate and borax, so that pH values of 11 or were obtained from 9.1. While the thickening in all polyoxyethylene derivatives disappeared immediately after the addition, it was permanently retained in the silica slurries thickened with polyethyleneimine.
- the thickened silica slurries obtained according to Examples 1 and 2 were each mixed with small amounts of hydrochloric acid until pH 1 was reached and with 2% citric acid or ascorbic acid until pH 2 and 3 were reached.
- the thickening is retained in all polyoxyethylene compounds in these acidic areas. In contrast, re-liquefaction is observed for those mixed with polyethyleneimine.
- Example 6 (preparation and use with a bucket syringe) 586 g of pyrogenic silica were stirred with 11.68 liters of water. After standing for one hour with occasional stirring, a viscosity of 13 seconds was measured in the discharge cup according to DIN. 35 g of polyoxyethylene lauryl ether were added to this thin suspension with stirring. After a short time, the viscosity of this mixture increased to a pasty, easily stirrable and pourable consistency.
- Example 7 production and application with a load-bearing syringe
- Example 2 It can be thickened by the additives mentioned in Example 1 and converted into a thickened aqueous slurry of silica suitable as an adhering fire extinguishing agent.
- the other part of the batch was mixed with 250 g of polyoxyethylene lauryl ether immediately after production and stirred with a paddle stirrer, which led to the uniform thickening of the entire silica suspension within about 30 seconds.
- the firefighting water thickened in this way was easily sprayed with a TS 2/5 portable fire pump according to DIN 14410 with a multi-purpose spray lance "C" according to DIN 14365, part 1, both as a full jet and as a spray jet.
- the thickened, sprayed extinguishing water could be taken up again by shoveling or suctioning off, so that any secondary products contained therein did not get into the ground or only to a considerably reduced extent.
- Example 8 fire extinguishing test
- the agent is suitable for extinguishing flammable materials such as wood, plastic, rubber, wood-based materials, textiles and other organic solid materials.
- Example 9 fire extinguishing test
- a 13-A fire (according to BFS 5423) was extinguished with a 3% thickened silica slurry prepared according to Example 7 extinguishing water preparation.
- the consumption of the extinguishing agent until it was completely extinguished was only 1.7 kg. This means that only 50 grams of silica have been used to completely extinguish the fire.
- the amount of firewood used here can naturally contain several times this amount of silica in its ashes.
- Example 10 (comparative example) A low-viscosity slurry of 4% of pyrogenic silica in water without the described thickening additives was used to extinguish a test fire of fire class A (as in example 8). Compared to water alone, the unthickened slurry used only marginally less to achieve the same quenching result. The number of reignitions obtained was comparable to that obtained with water itself. This shows that the good quenching effect found is dependent on the presence of a thickened aqueous slurry of the amorphous, synthetic silica.
- silica sol 500 ml of an approx. 3% silica sol are produced from a sodium water glass solution by treatment with a strongly acidic cation exchanger. The pH of the sol is approx. 5. The sol is exposed to a shear effect in a blender for 5 minutes. There is no visible change. After adding 2 g of a 20% solution of polyethyleneimine in water and briefly blinding, the silica sol immediately thickens without becoming gelatinous and has a viscosity of 20 Seconds in the outlet cup, remains sprayable and adheres to surfaces. After repeated shear in the blender, the viscosity is still 14-15 seconds. So there seems to be a slight thixotropy, but this is not disadvantageous for the spraying.
- silica sol 500 ml of an approx. 7% silica sol are produced from a sodium water glass solution by treatment with a strongly acidic cation exchanger. The pH of the sol is approx. 5. The silica sol is left to gel and the resulting gel is stored for two weeks. A 3% slurry in water was then prepared in a blender, which was sprayable and showed good adhesion. Its viscosity is 18 seconds in a DIN cup with a 4 mm nozzle.
- This slurry was used to extinguish a standardized Class A fire.
- the amount of extinguishing agent required was 1/3 of that of the water used as the comparative extinguishing agent, and the number of re-ignitions compared to water was reduced to half.
- the effect is significantly better than that of water, but not quite as good as the effect of a thickened silica slurry made from pyrogenic silica according to Example 7 and also adjusted to 2.5% (reduction in the amount of extinguishing agent compared to water to about 1/4 , Flashbacks 1/4 of that of water)
- a slurry of 8 g Aerosil 200 in 150 ml water was prepared. 80 g of 35 g of propylene glycol (A) and 69 g of 46 g of propylene glycol (B) are added to this. A and B are each thickened by adding 4 drops of polyoxyethylene lauryl ether. Both are kept for 48 hours in the refrigerator at -12'C, where B is viscous and A syrupy appeared viscous. After thawing, the thickening obtained after adding the thickener remained as before freezing.
- Aerosil 200 6 g are slurried in a solution of 10 g of potassium sulfate in 195 g of water and a few drops of polyoxyethylene lauryl ether are added to the resulting thin suspension and the mixture is stirred. The resulting thickening is expressed in an outlet viscosity of 20 seconds in a DIN cup (4 mm).
- 83 g of water are mixed with 7 g of pyrogenic silica and 0.1 g of polyethyleneimine (or the same amount of fatty alcohol polyglycol ether of the MG> 300, fatty acid polyglycol ester of the MG> 300, Polyoxyethylene sorbitan monofatty acid ester, or polyethylene glycol of MW> 700) and mixed by stirring.
- the resulting paste is filled into a plastic bag.
- the thickness of the pillow thus produced is approx. 8 mm, the dimensions approx. 10 x 10 cm. Cable pieces of various diameters are placed on the pillow. A horizontal gap of 3 cm in width is covered with this pillow. The gap is then flamed from below with a gas burner. Temperatures of approx. 700'C arise on the underside of the cushion. The cables are intact after flame exposure for approx. 20 min.
- a pillow as described in Example 17 is provided with a
- Insert made of a plastic itter At the ends of this pillow is provided with Velcro fasteners.
- the resulting pillow is placed around a polypropylene tube with a diameter of 40 mm according to DIN 19560 and closed with the Velcro like a sleeve.
- the tubular part protected in this way is flamed from below with a fire generated by gasoline in such a way that the flames sweep past the tube or the sleeve on both sides. After 20 minutes, the pipe shows no damage or softening.
- Example 19 A pillow as described in Example 17 is filled with a paste with an addition of 10 g of sugar dissolved in water. The pillow is hung upright and flamed from the front with a gas burner. A cable behind it is intact after 20 minutes. A breakdown of the pillow, as is the case without the addition of sugar, cannot be observed due to the carbon-forming sugar.
- Example 22 As example 21, but using 3 g of bentonite. The run-down time was 13 seconds, the spray behavior was good, the adhesion behavior on cold surfaces was satisfactory, and good on hot surfaces.
- Example 21 As in Example 21, but with the addition of 20 ml of a mixture of 1 g of guar gum in 100 ml of water. There is only a slight thickening effect, and a clear aqueous phase separates at the bottom of the beaker. Guar gum alone does not act as a thickener at these low concentrations of bentonite.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92903639A EP0570413B1 (en) | 1991-02-05 | 1992-02-04 | Fire extinguishing and protection agent |
DE59205254T DE59205254D1 (en) | 1991-02-05 | 1992-02-04 | FIRE EXTINGUISHING AND FIRE PROTECTION |
DEDE9200070T DE4290321D2 (en) | 1991-02-05 | 1992-02-04 | Fire extinguishing and fire protection agents |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4103388.4 | 1991-02-05 | ||
DE19914103388 DE4103388A1 (en) | 1991-02-05 | 1991-02-05 | Thickened fire extinguishing water contg. amorphous synthetic silica - with sticking property, pref. thickened with polyethylene glycol or its ether or ester |
DEP4118888.8 | 1991-06-10 | ||
DE19914118888 DE4118888A1 (en) | 1991-02-05 | 1991-06-10 | Fire extinguishing and protection agents |
DEP4134870.2 | 1991-10-23 | ||
DE19914134870 DE4134870A1 (en) | 1991-10-23 | 1991-10-23 | Fire extinguishing and protection agents |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992013602A1 true WO1992013602A1 (en) | 1992-08-20 |
Family
ID=27202161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1992/000070 WO1992013602A1 (en) | 1991-02-05 | 1992-02-04 | Fire extinguishing and protection agent |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0570413B1 (en) |
AT (1) | ATE133573T1 (en) |
AU (1) | AU1184392A (en) |
CA (1) | CA2101947A1 (en) |
DE (2) | DE4290321D2 (en) |
WO (1) | WO1992013602A1 (en) |
Cited By (28)
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WO1993025474A1 (en) * | 1992-06-12 | 1993-12-23 | Loehnert Gernot | Method of increasing the viscosity of water, and use of the method |
NL9300668A (en) * | 1993-04-20 | 1994-11-16 | Rudolph Arthur Marinus Kooijma | Liquid extinguishing agent |
EP0653473A1 (en) * | 1993-11-11 | 1995-05-17 | Walter H. Maria Wiemeler | Method for providing openings in hollow ceilings |
DE4343728A1 (en) * | 1993-12-21 | 1995-06-22 | Gernot Dr Loehnert | Thickened water |
US20050069566A1 (en) * | 2003-08-04 | 2005-03-31 | Foamix Ltd. | Foam carrier containing amphiphilic copolymeric gelling agent |
ES2264896A1 (en) * | 2005-07-08 | 2007-01-16 | Empresa De Gestion Medioambiental, S.A. | Flame retardant composition in solution form comprises an extinguishing component pigment and stabilizer mixture with a flow controller and surfactants |
US8945516B2 (en) | 2009-10-02 | 2015-02-03 | Foamix Pharmaceuticals Ltd. | Surfactant-free water-free foamable compositions, breakable foams and gels and their uses |
DE102013112063A1 (en) | 2013-11-01 | 2015-05-07 | Viktor Bauf | Fire retardant or fire retardant composition and its use |
US9050253B2 (en) | 2003-08-04 | 2015-06-09 | Foamix Pharmaceuticals Ltd. | Oleaginous pharmaceutical and cosmetic foam |
US9072667B2 (en) | 2009-07-29 | 2015-07-07 | Foamix Pharmaceuticals Ltd. | Non surface active agent non polymeric agent hydro-alcoholic foamable compositions, breakable foams and their uses |
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US9713643B2 (en) | 2002-10-25 | 2017-07-25 | Foamix Pharmaceuticals Ltd. | Foamable carriers |
US9849142B2 (en) | 2009-10-02 | 2017-12-26 | Foamix Pharmaceuticals Ltd. | Methods for accelerated return of skin integrity and for the treatment of impetigo |
US9884017B2 (en) | 2009-04-28 | 2018-02-06 | Foamix Pharmaceuticals Ltd. | Foamable vehicles and pharmaceutical compositions comprising aprotic polar solvents and uses thereof |
US10398641B2 (en) | 2016-09-08 | 2019-09-03 | Foamix Pharmaceuticals Ltd. | Compositions and methods for treating rosacea and acne |
Families Citing this family (1)
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FR2899818B1 (en) * | 2006-04-13 | 2009-05-15 | Bio Creation Sa | HIGH WATER CONTENT AQUEOUS SOLUTION FOR FIRE FIGHTING |
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1992
- 1992-02-04 CA CA002101947A patent/CA2101947A1/en not_active Abandoned
- 1992-02-04 DE DEDE9200070T patent/DE4290321D2/en not_active Expired - Fee Related
- 1992-02-04 EP EP92903639A patent/EP0570413B1/en not_active Expired - Lifetime
- 1992-02-04 AU AU11843/92A patent/AU1184392A/en not_active Abandoned
- 1992-02-04 DE DE59205254T patent/DE59205254D1/en not_active Expired - Fee Related
- 1992-02-04 AT AT92903639T patent/ATE133573T1/en not_active IP Right Cessation
- 1992-02-04 WO PCT/DE1992/000070 patent/WO1992013602A1/en active IP Right Grant
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Also Published As
Publication number | Publication date |
---|---|
CA2101947A1 (en) | 1992-08-06 |
EP0570413A1 (en) | 1993-11-24 |
ATE133573T1 (en) | 1996-02-15 |
AU1184392A (en) | 1992-09-07 |
DE4290321D2 (en) | 1994-04-28 |
EP0570413B1 (en) | 1996-01-31 |
DE59205254D1 (en) | 1996-03-14 |
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