Патент USA US2136963код для вставки
’ i Ll‘ GUISHING' METHOD AND Heinrich Chemnits, . a .- , _ or, ts, to Biihme Fettchemi - I Battling, Chem mar 18, 1934, Se Norial Drawing. kpplioalgon‘l‘ rvo-1.1,, No 18, No. 753,406. 1938 12 - “1 ‘Hit (0!. 28-11) This invention relates to ?re extinguishing compounds, containing ‘for instance amino groups, halogen atoms, ester groups, or ether ducing type of fire extg medium, where-l groups in the aliphatic chain. Similarly, qua by the combustible material may be smothered ternary ammonium compounds which are not de by a blanket of foam. It is the principal object rived from heterocyclic nitrogen bases, but from of the invention to provide a medium or this aliphatic, cyclo-ali'phatic, aromatic, or even mixed character which is inexpensive to produce and tertiary amines, as well as the corresponding which will be effective for the extinguishing of phosphonium and sulphonium compounds, may ?re in materials not readily controlled'by ?re be employed. ‘ extinguishing media heretofore developed. While the quaternary high molecular ammoni M Thus it is a further object of the invention um compounds and particularly those derived to provide a medium ‘which will foam freely and A from heterocyclic nitrogen bases, such as pyridin which will effectively blanket and smother the for example,\are of special importance by rea combustion of alcoholic ?uids. It is a feature of son of the fact‘ that they are readily accessible, . agents and more particularly to the foam pro the invention that the medium forms a foam in numerous other compounds of the character which the gaseous agent is principally air, prior air foam producing media being rendered ine?ec tive by the alcohols. It is a more speci?c object of the invention to provide a ?re extinguishing medium comprising hereinbefore indicated have been found effec tive. Thus the following speci?c compounds, a mixture of a ?uid with a quaternary high mole cular ammonium salt or the corresponding phos ?res of an alcoholic origin: and the fluid mixtures and aqueous solutions thereof, 'will produce a dense blanket of foam ' suitable for the extinguishing of ?res, especially" 20 I Tetr'adecyl, hexadecyl, andocta-decyl pyridi phonium and sulphonium compounds. Quatern nium sulfate, undecenyl, dodecyl, tetradecyl, oc ary high molecular ammonium salts, which con tain long aliphatic chains or cycloaliphatic or aromatic radicals as substituents, are found to ‘produce a dense foam ?lm, completely stable to alcohols, and indestructible even when contacted with the hot walls of a tank containing burning tadecyl, octadecenyl chinolium sulfate, decyl py ridinium bromide, ,hexadecenyi chin'olinium io 25, alcohol, affording a positive guaranty oi’ rapid and complete extinction of all ?res in liquids an? particularly in liquids of an alcoholic char ac er. . The extinguishing of alcoholic ?res by chemi dide,-quaternary ammonium compounds derived from asymmetrical o1eyl-diethyl-’-.ethvlenediamine by addition of dimethyl sulfate or diethyl sul fate or methyl iodide, decyl phosphonium iodide, dodecyl phosphonium bromide, tetradecyl phos 30 phonium bromide, octadecenyl phosphonium io dide, dodecyl fsulphonium iodide, octadecyl sul phoniuni/br'omide, heptyl-i-urea bromide, decyl i-thiourea iodide, hexadecyl-i-thiourea iodide, , cal foam producing methods, “for instance by the addition products of tetradecyl bromide or 85 the development of a foam blanket in which the dodecyl iodide to hexamethylenetetramine, heptyl gas ‘phase of the foam consists of carbon dioxide guanidine, tolyl guanidine, the quaternary am _or otherpnoncombustible gas, are not only de monium compound prepared by the addition of fective and dangerous but very expensive. In the dodecyl ether of a-glycerine bromhydrine accordance with the present invention ?res can "CnHaaCHmOSHaCHOI-LCHaBr to pyridin, the be effectively ext 3-; il by means 01 air foam produced by an ordinary foam generator or foam D De Emmpie I quaternary ammonium compound formed by the , addition of bromine-acetic acid dodecyl ester Br CHaCOQCHaCnI-ha to chinoline. Example 2 A solution of 500 grams of lauryl pyridinium sulphate in 100 liters of water is dischargedin any convenient manner into a tank containing burning alcohol. The ?re is promptly extin guished without the evolution of obnoxious or dangerous gases. . ' In lieu of 'lauryl pyridinium sulphate there may be employed compounds with higher or low er alkyl residues, preferably having from 8 to 22 carbon atoms, or ‘substitution products of these A solution of 600 grams of hexadecyl triethyl phosphonium bromide in 100 liters of water mixed with 10 liters of glycerol is discharged by a foam generator onto the burning object. 50 Example 3 - A summon ‘of: 500 grams decyl dimethyl sul fonium iodide in 100 liters of water is discharged by a foam pipe onto the burning object. 65 2.’ ' _ aisasea Example 4 compounds. 500 grams of the quaternary ammonium com pound prepared by the addition 0! the hexadecyl ether of a-glycerine chlorhydrin to pyridin are dissolved in 500 liters of water and this solution 5. A ?re extinguishing medium comprising a high molecular quaternary ammonium compound selected from the group consisting of pyridinium, quinolinium, and isoquinolinium salts. is mixed with 500 liters of carbon tetrachloride. ‘ 6. A ?re extinguishing medium comprising a solution of a quaternary ammonium salt of the The mixture is discharged onto the burning ob ject by a foam generator. 10 Other, preferably non-combustible _ nary ammonium, phosphonium and sulphonium general formula liquids ' than water can be mixed with or employed as a solvent for the active medium, for instance ' 10 R-NER: wherein R is an aliphatic radical containing not less than eight carbon atoms in a continuous carbon tetrachloride, perchlorethane and like halogenated hydrocarbons. Additions 0! alco chain, X is a halogen atom or —0SO:H or ——NO: 15 and NR: is a pyridine or a quinoline. 16 hols, especially of glycerol, are often suitable for preventing freezing of the ?re-extinguishing '7. A medium for extinguishing ?re comprising ° Having thus described the invention, what is 4 an aqueous solution of a substance selected from the group consisting of high molecular quater claimed as new and desired to be secured by Let nary ammonium, phosphonium and sulphonium 20 ters Patent is: . 20 compounds. 1. A method of extinguishing ?re in alcoholic 8. A ?re extinguishing medium comprising an material which ‘comprises covering the burning material with foam produced by a mixture of aqueous solution of a high molecular quaternary agents at low temperatures. liquid and a compound selected from the group consisting of high molecular quaternary am monium, phosphonium and sulphonium com pounds. 2. A method of extinguishing ?re in alcoholic material which comprises covering the burning 30 material with foam produced by a mixture of water and lauryl pyridinium sulphate. 3. A ?re extinguishing medium comprising a mixture of liquid and a compound selected from the group consisting of high molecular quater— 35 nary ammonium, phosphonium and sulphonium compounds. - . 4. A ?re extinguishing medium comprising a mlxture of water and a compound selected from ' the group consisting of high molecular quarter' ammonium compound. ‘ ‘ 9. A ?re extinguishing medium comprising an aqueous solution of a pyridinium salt. - 10. A ?re extinguishing medium comprising an aqueous solution of lauryl Pyridinium sul phate. _ 11. A method of extinguishing ?re which com prises producing a combustion smothering foam 30 with a mixture of water and a. pyridinium com pound. 12. An <~ alcoholic combustion ' extinguishing mixture comprising water and a foam producing medium including a quaternary ammonium com~. 35 pound selected from the group consisting of com pounds derived from aliphatic, armomatic and mixed tertiary amines. HEINRICH BERTSCH.