FR2528317A1 - CONCENTRATE OF FIRE EXTINGUISHING PRODUCTS AND PROCESS FOR PREPARING THE SAME - Google Patents

Abstract

INVENTION RELATING TO FIRE-FIGHTING PRODUCTS. A CONCENTRATE OF EXTINGUISHING PRODUCTS IS USED, WHICH CONTAINS: -10 TO 40 BY WEIGHT OF ALKYLARYLSULPHONATE; -10 TO 40 BY WEIGHT OF FATTY ACID ALCANOLAMIDE; -15 TO 50 BY WEIGHT OF ALKYLETHERSULPHONATE; -0.5 TO 6 BY WEIGHT OF POLYCARBOXYLIC ACID ESTERSULFONATE; -3 TO 15 BY WEIGHT OF POLYETHYLENEGLYCOL; -0.1 TO 4 BY WEIGHT OF AMMONIUM FLUOROALKYLIODIDE; -20 TO 60 BY WEIGHT OF DEIONIZED WATER. APPLICATION ESPECIALLY FOR FIGHTING WOOD FIRES AND FIRES OF SIMILAR MATERIALS.

Description

252831?

  1 - The present invention relates to fire-fighting products and, more specifically, to a concentrate of products

  fire extinguishers and one proceeds for its preparation.

  To combat fire a large number of different fire extinguishing agents are used. for a long time we have used in considerable quantity

  carbon dioxide which extinguishes a fire by means of

  This has proved disadvantageous because C 02, in the case of open fires, is frequently diluted by air movement and because of

  its effectiveness is affected and, when

  with CO 2 in closed rooms, there is a danger

asphyxiated.

  Also in recent years to extinguish fires

  Concentrates based mainly on

foaming synthetic fibers.

  Current foaming products contain forma-

  foamers themselves and a stabilizing additive.

  As a foam former, protein hydrolysates, alkylsulfonates, arylsulfonates and alkylarylsulphonates, sulfuric acid esters of alcohols have already been proposed.

  straight or branched chain, alkali sulphates

  fatty acid lamins, monoglycerides of fatty acids or

  methyltaurine in the form of ammonium or amine salts.

  As stabilizing additives that enhance the ability of

  water retention of the foam one can consider the use of

  of higher alcohols and amides with 8 to 25 carbon atoms

  carbon or aluminum oxide adducts

  kylene to these higher fatty alcohols with few molecules

of alkylene oxide.

  Thus, for example, DE-AS 29 33 432 discloses an incense extinguishing product which contains, as active components, a hydroxycarboxylic acid, an aliphatic carboxylic acid, a salt with an organic or inorganic acid with a metal, and a anionic or amphoteric foaming agent

  or a hydrolytic decomposition product of a protein.

  The foam-based extinguishing products used

25283 Â 7

  2 - At the present time have many disadvantages Thus, in many cases, the extinguishing product in the form of powder used previously largely reduced the formation

  other concentrates of fire extinguishing

  show a reduced foaming capacity, if they are diluted with seawater In turn, some fire extinguishing agents attack the

  containing or decomposing in case of prolonged storage

  nally, some components of the extinguishing

  commercially available ash or their degraders

  are the cause of considerable contamination in the middle

ambient place.

  It is up to the invention to overcome the disadvantages mentioned and to provide an improved concentrate of products.

  fire extinguishers with a superior capacity of

  foam and the possibility of biological degradation.

  According to the invention, this result is achieved by means of a fire extinguishing agent concentrate which contains 10 to 40% by weight of alkylarylsulphonate, 10 to 40% by weight of 50% fatty acid alkanolamide. by weight of alkyl ether sulfate, 0.5 to 6% by weight of polycarboxylic acid ester sulphonate 3 to 15% by weight of polyethylene glycol,

  0.5 to 4% by weight of fluoro-alkyliodide of am-

  monium, 60% by weight of deionized water,

  and optionally 0.1 to 3% by weight formalin.

  The following is a breakdown of the individual components

  Alkylarylsulfonate alkyls 1 arylsulfonates of the general formula R-Ar-SO Me I used according to the invention contain alkyl radicals R of 3 to 16 carbon atoms Ar is a benzene or naphthalene system and the cation Me I is An alkali metal or triethanolammonium cation. Compounds 3 - which contain alkyl radicals with 10 to 14 carbon atoms are preferred.

  Carbon is used in a specially preferred way in the in-

  use of dodecylbenzene sulphonate in the form of sodium salt or triethanolamine in the fire-extinguishing concentrate. 2 fatty acid alcanolamide In the case of this class of compound used in the concentrate according to the invention, it is acid amides

  non-ionogenic N-alkylated fatty acids, prepared by reaction of

  laminates with fatty acids which carry hydrofluoric groups

  Xyl esterifiable in the N-alkyl part According to the invention

  these monoalkanolamides are used as well as dialkano-

  fatty acid lamins of the general formula

R 1 CO-N (R 2) (CH 2) -OH

  In the formula, R is the radical of a saturated fatty acid

  saturated or not with 6 to 24 carbon atoms; R 2 is a hydrogen atom

  drogen or an alkanol radical and N at a value of 2 to 5.

  In such a case, preference is given to fatty acid derivatives found in nature, such as, for example, caproic acid, capric acid, lauric acid, palmitic acid, stearic acid, coconut fatty acid and oleic acid. Particularly preferred is coconut fatty acid diethanolamide, fatty acid N, N-L 2-hydroxyethyl) amide.

coconut.

3 Alkylethersulfate

  In the case of alkyl ether sulphates used according to

  Invention, they are compounds having the general formula 1R (OR 2) n 504 1 X + where R 1 represents an aliphatic radical of 10 to 20 carbon atoms, R 2 is a divalent aliphatic radical of 2 to 5 carbon atoms N is an integer from 1 to 10, and X is a cation such as for example amonium, sodium, potassium,

  magnesium, calcium, a monoethanolamine radical, dietary

laminate or triethanolamine.

  4- In accordance with the invention, the compounds with C 10 -C 14 alkyl radicals in which N is

  an integer of 2 to 5 and X is a sodium cation.

  According to the invention, sodium lauryl diethyl ether sulphate of the formula C 12 H 25 (α 2 H 4) 2 -SOO 3 Na 4 is especially preferably used. Sulfuric acid ester of polycarboxylic acids

  In these compounds used according to the invention,

  monoesters and diesters as well as higher esters of sulfocarboxylic acids.

  carboxylic acids are preferably derived from dicarboxylic acids.

  The ester groups will preferably be formed with alcohols having a chain length of 4 to 14

carbon atoms.

  The monoesters and diesters of sulfosuccinic acid having the general formula R 1 OOC-CH 2 -CH (SO 3 R 3) -CooR 3 are particularly preferably used.

  generally used in the form of its sodium salts.

  In the formula, R 1 is a C 4-14 radical, R is a C 4-14 radical or Na or K, R is Na or K 4-14. According to the invention the di ( 2-ethylhexyl) sodium sulfosuccinate formula: CH

3

CH

CH 2 -COO-CH 2 -CH-CH 2 -CH 2 -CH 3

CH-COO-CH 2 -CH-CH 2 -CH 2 -CH 3

  Polyethylene glycol In the case of the polyethylene glycols used in the invention, they are compounds having the general formula HO (CH 2 CH 2 O) n H - where N is equal to 80 to 180 Average molecular weights are preferred

  from 3,600 to 7,800, and especially from 5,000 to 7,000.

  The polyethylene glycol preferably used corresponds, for example; to the formula

HO (CH 2 CH 20) 135H

  These highly fluorescent alkyls may comprise a branched or unbranched carbon chain. The fluoroalkyl part comprises 3 to 30 carbon atoms, preferably 5 to 12 carbon atoms. According to the invention, it is particularly suitable for

  It is preferred to use the amide iodide of ammonio

  lyfluorocarboxylic having the formula

C 9 F 19 CONH (CH 2) 3 N (CH 3) 3 Y

  7 Deionized water In the case of this component, it is water that has been

  deionized by one of the many known methods.

8 Formol

  If necessary, it is added to the concentrate of ex-

  This is used especially in the case of prolonged storage, for example in the concentrated state, but also in the ready-to-use form of the fire extinguishing product according to the invention. as a preservative Formol is added in the form of the usual 40% solution

found in the trade.

  The parts by weight in percent for the components

  Individual strengths are (preferred range is indicated in parentheses): 1-10-40% Alkylarylsulfonate (15-25%) 2 -40% Fatty Acid Alcanolamide (10-20) 3 15-50% Alkyl Ethersulfate (15- 30%) 4 Polycarboxylic acid Estersulfonate 0.5-6% (0.5-2%) Polyethylene Glycol 3-15% (6-10%) 6 Fluoroalkyl iodide 0.1-4 S (0.1- I) 7 Deionized water 20-60% Y (35-45%) 8 Formalin optional 0.1-3% (0.1-1%)

252831?

6

  A concentrate of fire extinguishing products

  Especially preferred according to the invention contains:% by weight of dodecylbenzenesulfonate in the form of triethanolamide salt, 10% by weight of N, N- (2-hydroxyethyl) amide of coconut fatty acid, 22% by weight of sodium lauryldiethylthersulfate C 12 H 25 (OC 2 H 4) 2 -O 503 Na 1% by weight of sodium di- (2-ethylhexyl) sulfosuccinate,

  7.5% by weight of polyethylene glycol with a weight of

average lecular from 5,000 to 7,000,

  0.1% by weight of iodide of the amide of ammonio

lyfluorocarboxylic of the formula

C 9 H 1900 NH (CH 2) 3 N (CH 3) Y

  39.3% by weight of deionized water, and

0.1% by weight of formalin.

  The invention also relates to a method of preparing

  concentration of fire extinguishing

previously described.

  For this purpose, in a 20 to 60% by weight container (relative to the total amount of the preparation) deionized water is available in advance, while maintaining a temperature of 15 to 50 ° C.

  and with continuous stirring, 10 to 40% by weight of

  kylarylsulfonate, 10 to 40% by weight of fatty acid alkanolamide, 15 to 50% by weight of alkyl ether sulfate, 0.5 to 6% by weight of polycarboxylic acid ester sulphonate, 3 to 15% by weight of polyethylene glycol and 0.1 to 4% by weight of ammonium fluoroalkyl iodide 0.1 to 3% by weight of formaldehyde is added to the mixture. Stirring is continued until the components have completely passed into solution. irradiation of the

  solution obtained by polarized light.

  The concentrate of fire extinguishing products according to the invention usually mixes with 90 to 99.5% by weight of water. For this purpose, it is possible to use fresh water as well.

  seawater without any appreciable diminution of the capacity

-7-

quote foam formation.

  In the different classes of extinguishing products

  the composition according to the invention is

  Among the fluorinated products in the product group called AFFF (aqueous film forming foam) Y 1, added in relatively low concentrations, the concentrate shows a formation

surprisingly intense foam.

  The fire extinguishing product according to the invention is especially suitable for combating wood fires,

  such as fire in homes, fire

  dies in furniture stores or sawmills, as well as

  that also to fight forest fires.

  The action of the fire extinguishing product according to the invention is based on blocking effects and

cooling.

  As a result of comparative tests with known AFEF products, the following advantages of the fire extinguishing agent concentrate according to the invention have been recognized: a) the formation of foam is greater, for a concentration equal to the formation of foam

known products.

  b) The extinct objects are considerably cooled

  (c) Even if it is highly diluted,

  fire extinguisher fire extinguishers according to the invention

  has good extinguishing properties.

  d) The product according to the invention does not produce any

  tamination of the environment, since all the

  These are particularly biologically degradable This is particularly important in the case of large fires, for example forest fires, because in such cases large quantities are used.

  extinguishing product.

  e) At corresponding concentrations the extinguishing product according to the invention produces a continuous and stable foam, which prevents

  the exhaust of combustible gases.

8-

  f) The composition according to the invention is extraordinarily

  stably stable in storage over a period of 5

  years there is hardly any evidence of

leads to decomposition.

  The fire extinguishing product according to the invention is brought to the focus of the fire, according to the place and the kind

  fire, with portable or transportable devices.

  it can also be operated using fire suppression systems installed in a fixed form, for example by means of fuses, controlled by sensors

optical or thermal.

  The invention will be better understood on reading the following examples:

EXAMPLE 1

  In a flask equipped with a stirring system and an introduction funnel is placed 39.3% by weight (relative to the total preparation) of deionized water The flask is maintained at a temperature of 26 to 30 OC by means of a bath

  of water throughout the preparation.

  tinned, 20% by weight of

  decylbenzenesulfonate in the form of triethanolamine salt and then 22% by weight of sodium lauryl diethyl ether sulphate

  C 12 H 25 (O 2 O 4) 2 -SO 3 Na through the introduction funnel

  The mixture is stirred and immediately 0.1% by weight of amide of amide of ammoniopolyfluorocarboxylic acid C 9 F 19 CONH (CH 2) 3 N (OH 3) 3 Y is added to it. , 1% by weight of sodium di (2-ethylhexyl) sulfosuccinate and% by weight of N, N- (2-hydroxyethyl) fatty acid amide

  Finally, 7.5% by weight of polyethylene is added.

  glycol and 0.1% by weight of formaldehyde is stirred at a temperature of

  constant temperature of about 280 C until complete dissolution of the components Finally, the solution is irradiated by

polarized light.

  The product obtained is diluted with running water in the proportion of about 5% by weight of the product for about

% of water.

9 -

  The fire extinguishing product obtained from this

  This is a yellow color and is soluble in water in any proportion.

  2 C C and is 1.06; the viscosity is 1200 cc.

  The solution has an anionic character; she has a point

  freezing rate of about 0 C and its pH is 8.2.

EXAMPLE 2

  The preparation is carried out in the same conditions

  than those described for example 1 The individual components

  duels were added in the following proportions of the

  lange (amounts indicated in% by weight): Deionized water 60.7 N-dodecylbenzenesulfonate 14 N, N- (2-hydroxyethyl) coco fatty acid 5 Lauryldiethylethersulfate 12 Di (2-ethylhexyl) sodium sulfosuccinate 4 Polyethylene glycol 35 6

  Amide iodide of ammoniopoly acid

  fluorocarboxylic acid 0.6 Formol 0.1 Once the mixing is complete and the components are completely dissolved, the solution is irradiated with

polarized light.

-

Claims (14)

  1 Concentrate of incense fire extinguishers, characteris-   in that it contains: 40% by weight of alkylarylsulphonate, 10 to 40% by weight of alkanolamide of a fatty acid, 50% by weight of alkylethersulphate,   0.5 to 6% by weight of ester sulphonate of a polybasic acid   carboxylic acid, 3 to 15% by weight of polyethylene glycol, 0.1 to 4% by weight of ammonium fluoroalkyliodide,   to 60% by weight of deionized water.   Concentrate according to claim 1, characterized in that   further contains 0.1 to 3% by weight formalin.   3. Concentrate according to claim 1 or Z, characterized in that the alkylarylsulfonate used has an alkyl radical of 3 to 16 carbon atoms, and, as an aryl radical, a benzene or naphthalene system and, as a cation, a   cation of alkali metal or triethanolammonium.   Concentrate according to any one of claims 1 to 3,   characterized in that the fatty acid alkanolamide employed   has a fatty acid radical of 6 to 24 carbon atoms.   Concentrate according to any one of claims 1 to   4, characterized in that the alkyl ether sulphate used, of the general formula lR 1 (OR 2) n 504 -X   has an aliphatic radical R 1 of 10 to 20 carbon atoms   bone and a divalent aliphatic radical R 2 of 2 to 5 carbon atoms   carbon, N being an integer from 1 to 10, and X being   either an ammonium, sodium, potassium, magnesium or calcium cation or a monoethanolamine radical, dietnanolamine or triethanolamine.   Concentrate according to any one of claims 1 to   characterized in that the sulfonic acid ester used corresponds to a polycarboxylic acid of the general formula I at 100 CCH CH (53 OR 3) OOR 2, where R is an aliphatic radical of 4 to 14 carbon atoms, 2 is a radical of 4 to 14 carbon atoms or 11 - Na or K, and N 3 is Na or K.   7 concentrate according to any one of claims 1 to 6,   characterized in that the polyethylene glycol used   an average molecular weight between 3 SUG and 7800.   Concentrate according to any one of Claims 1 to 7,   characterized in that the fluoroalkyliodide of ammonium comprises   as a fluoroal radical Kyle, a branched or unbranched cine. from 3 to 30 carbon atoms.   Concentrate according to Claim 1, characterized in that it contains% by weight of dodecylbenzenesulphonate in the form of triethanolamine salt,% by weight of N, N- (2-hydroxyethyl) amide of coconut fatty acid, 22% by weight of weight of sodium lauryldiethyl ether sulphate C 12 H 25 (oc 2 H 4) 2 -SO 3 Na, 1% by weight of sodium di- (2-ethylhexyl) sulfosuccinate, 7.5% by weight of polyethylene glycol of a molecular weight average of 5000 to 7000,   0.1% by weight of iodide of the amide of ammoniacal acid   polyfluorocarboxylic acid, of the formula C 9 F 19 CONH (CH 2) 3 N (CH 3) 3 Y,   39.3% by weight of deionized water, and 0.1% by weight of formalin.   Process for preparing a concentrate of ex-products   Fire detectors according to Claim 1, characterized in that 20 to 6% by weight, based on the overall product, of deionised water in a balloon is initially available.   equipped with a stirring system and a funnel of introduc-   at a temperature of 15 to 50 °, and, while maintaining this temperature and with stirring, is successively added to 40% by weight of alkylarylsulphonate, 50% by weight of alkylethersulphate, 0.5 to 4% by weight ammonium fluoroalkyliodide,   0.5 to 6% by weight of polybasic acid estersulfonate   carboxylic acid, 12 to 40% by weight of alkanolamide of a fatty acid, 3 to 15% by weight of polyethylene glycol, and optionally 0.5 to 3% by weight of formalin.   in the indicated order of succession, and stir the mixture   obtained until complete dissolution of the components.   11 preparation process according to claim 10, characterized in that   characterized in that the alkylarylsulfonate added has an alkyl radical of 3 to 16 carbon atoms, such as an aryl radical, a benzene or naphthalene system, and   cation, an alkali metal cation or triethanolammonium.   Process according to claim 10 or 11, characterized in that the fatty acid alkanolamide adds to an acid radical fat from 6 to 24 carbon atoms.   Process according to one of Claims 10 to 12,   characterized in that the added alkyl ether sulphate having the general formula Y 1 R 1 (OR 2) n SO 4 X +   has an aliphatic radical R 1 of 10 to 20 carbon atoms.   bone and a divalent aliphatic radical R 2 of 2 to 5 carbon atoms, N being an integer of 1 to 10 and X being an ammonium, sodium, potassium, magnesium or calcium cation or   a radical of monoethanolamine, diethanolamine or triethanolamine the mine.   Process according to any one of claims 10 to 10   13, characterized in that the added sulphonic acid ester corresponds to a polycarboxylic acid of the general formula R 4000 C-CHI 2 -CH (So 3 R 3) -Coo R 2 O R represents an aliphatic radical of 4 to 14 carbon atoms, R 2 is a radical of 4 to 14 carbon atoms or Na or K, and R 3 is Na or K.   Process according to any one of claims 10 to   14, characterized in that the polyethylene glycol adds this   an average molecular weight of between 3600 and 7800.   Method according to any of the claims 10   at 15, characterized in that the ammonium fluoroalkyliodide 13 -   adds as a fluoroalkyl radical a branch chain   or unbranched from 3 to 30 carbon atoms.   Method according to any of the claims 10   16, characterized in that the solution obtained is irre-   radiated by polarized light.