DD209741A5 - LIQUID FIRE-LIQUID CONCENTRATE AND A METHOD OF MANUFACTURING THEREOF - Google Patents

Abstract

The invention relates to a liquid fire extinguishing agent concentrate and a process for its preparation. The concentrate contains 3 to 20% by weight of alkylphenol polyglycol ether, 2 to 18% by weight of fatty acylalkanolamide, 6 to 25% by weight of sulfonated polyfluoroalkylbetaine, 20 to 80% by weight of deionized water and is particularly suitable for controlling liquids and liquids solid hydrocarbons. It is characterized by good foaming properties and biodegradability.

Description

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15 628 55

Liquid fire extinguishing agent concentrate and process for its preparation

Field of application of the invention and g:

The invention relates to a liquid fire extinguishing agent concentrate and a process for its preparation.

Characteristic of the known technical solutions;

In addition to powder extinguishing agents, numerous extinguishing foams of different composition are used to combat fires. The generation of foam from aqueous solutions of foam-forming concentrate usually takes place by expansion with air. Frequently, the concentrates contain, in addition to the actual foaming agent or a mixture of foaming agents, a stabilizing additive. "As foaming agents, protein hydrolysates were preferred for a long time, but in recent years they have taken a back seat due to their relatively low foaming.

The used recently fire extinguishing agent concentrates are _β Schwefelsäureester higher alcohols or sulfates of Fettsäuealkanolaminen used as foaming agents for "B _e alkyl, aryl and alkyl aryl For example, from DE-AS 2,933,432 a scheura-

type of fire-extinguishing agent for hydrophilic "flammable liquids" which contains "in" hydroxycarboxylic acid an aliphatic carboxylic acid "a salt of organic or inorganic acid with a metal and an anionic or amphoteric surface active agent or in protein hydrolyzate

The well-known fire-extinguishing agents often have the power to "cause the generated surface to contact the burning surface of hydrophilic liquids." For example, "©! ®® alcohols" ketones, ethers, or esters melt thereby "make it impossible" the burning surface to cover and thus to extinguish with sight "Other fire-extinguishing agents are degraded by prolonged storage or by showing only slight foaming properties. Most of the time it is dependent on the type d © @ 2ug®g © b © nan Wsseer« in ύ®η raeieten fire extinguishing agents foaming at Zugab® of seawater falls sharply, "Zude® © sharing agreement © part © d®r commercial fire extinguishing agents or their degradation products significantly ein® © environmental

The invention aims to eliminate the deficiencies of the state of the art.

Explanation ^ e ₁ S _{11 i} W ^ s ^ njB _it-i dgjr ^ _a E ^

The invention is based on the object of providing an improved extinguishing agent consensus with good foaming properties and biodegradability.

According to the invention this Ayfgabe by di © creation of a new fire extinguishing agent concentrates solved «which 3-20 wt -% Alkylphenolpolyglykolether * 2-18 wt -% fatty acid alkanolamides 6-25 wt .-% sulfonated Polyfluor'a & kylbetain and 20-80 wt. -% deionized © s contains water.

The components are in detail: 1 »Al kyl ph enolpolyglykolether

These belong to the group of non-ionic surfactants and are produced · Oer Alkylphenylteil represents the lipophilic, the polyether moiety is the hydrophilic part of the surfactant by condensation of alkylphenols with ethylene 'oxide ·

The alkylphenol polyglycol ethers used in accordance with the invention contain alkyl radicals having from 3 to 13 carbon atoms. The corresponding hexyl, heptyl-α-carboxyl / nonyl and decyl compounds are preferred.

The condensed ethers contain 6 to 20 ethylene oxide units. The compounds having 8 to 12 ethylene oxide units are preferred.

Particularly preferred is the condensate of Octylph @ npl with 10 units of ethylene oxide:

- ° < ^C 2 ^H 4 °> l0 ^H ·

In this invention used in the invention © g®iaiB®n concentrate?. © Verbindungskiass is by reacting. Non-ionic, non-ionic, alkoxylated fatty acids produced with fatty acids, bearing the bare hydroxyl groups embedded in the N-alkyl moiety. The Aasic®s used in the iro's fire extinguishing agent concentrate are both fatty acid mono- and fatty acid dialkanolamides of the general formula

R ¹ ~ G0-N (R ² ) - (CH ₂ ) _n -OH.

In this formula, R is the radical © in saturated or unsaturated fatty acid having 6 to 24 carbon atoms. These are preferably derivatives of naturally occurring fatty acids, eg Capronsaur® capric acid, lauric acid, palinic acid, stearic acid, coconut fatty acid and oleic acid «

More preferably, the Diethaholaraid of coconut fatty acid is β N _<, F4 (2 ~ HydroKy0htyl) kokosf®ttsäur8anäicl _e

This group of compounds used in the fire extinguishant concentrate of the present invention is polyfluorinated Amphot @ nside. Preferably, they are compounds of the general formula

Where η stands for a © ganz® number from 4 to IO and ρ for an integer of 12 bi® 24 and H © stands for an Alk® ~ liatosu

_m κ _-

Particular preference is given to sulfonated © Polyfluoralkylbe »taine of the formula

where Me stands for sodium or potassium «

4. Ent ion ized S _n Wassejr

This component is water which has been deionized by one of the many known processes »

5 «Formeliii

If necessary, a small amount of formalin is added to the concentrate, in particular during prolonged storage, in the concentrate form, but also in the ready-to-use form of the incinerator as preservative substance The formalin is added as a commercially available ca * 40% solution ©

«The percentages by weight for each Kotnpo-

are in parentheses (preferred in brackets © area):

1, alkylphenol polyglycol ether 3-20 ^ 5 (8-12%)

2 · * fatty acid alkanolamide 2-18 % (8-12 %)

3 _e Sulfonated polyfluoroalkylbetaine 6-25 % (10-1.5 %)

4 »Deionized water 20-80 % (50-80 %) If necessary

5. Formalin (40% solution) 0.1 »3 % (0.1-1 %)

yiiigäsg @ s! Particularly preferred fire extinguishing agent concentrate has the following composition (data in G @ w ~%) z

10% Oetylphenolpolygiykölötherι This is a condensate vsn Aetylphenol iBit about 10 Hol ethylene oxide 5

10 % N _i N »(2» hydroxyethyl) coco fatty acid amide _i 12.3 % Sulfonated polyfluoroalkyl betaine d @ r formula

C _e F ₁₇ CH _a ((CH ₂ C0NH (CH ₂ ) ₃ Ma ₂ (CH ₂ ) ₃ ) SO _3. ,

67 «55 % deionized © water, 0.15 % formalin«

The invention likewise relates to a production method for the above-described fire-extinguishing agent concentrate.

For this purpose, in a container at a temperature of 15 ~ 50 ° C with continuous stirring deionized water in a Meng © from 20 to 80 9aw, ~ ^ (based on the gesaroten approach) submitted. Then ms rd © © n while stirring and maintaining the temperature for 3 to 20 wt »-% of alkylphenol polyglycol ether are added" Subsequently, under the same conditions of 2 to 18 G @ w _e added °°% fatty acid alkanolamide · Stirring is continued and then the mixture obtained from 6 to 25 percent by _e -% sulfonated Polyfluoralkylbetairo added "Optionally, the Geiaisch for preservation also 0«! up to 3% by weight of formalin added »Stirring continues« until the substances have completely dissolved »Subsequently, preferably polarized light is irradiated into the solution«

The erfindungsgeraäße Feu © rlösohfflitt © l ~ S <o "z © ntrat is usually with 90 to 99" 5 percent "~ blurs% water" This can both freshwater al © also ahn® essential. Impairment of the Schaubabildungsvergngens seawater to be used · Among the various types of fire extinguishing agents, the invention relates to the composition of the invention to the fluorine-containing agents aer group of the so-called AFFF means (aqueous filo forming'foam) *

The fire extinguishing agent according to the invention is particularly suitable for combating fires of liquid or solid hydrocarbons. It can also serve as an emulsifier for the formation of foams and in this property promote the penetration of the water into cellulosic materials (wood, straw, paper, etc.) results in a wide variety of uses; like ZoB * in the chemical industry, refining. Flight »ports _s plastics industry © te"

The effect of the fire extinguishing agent according to the invention is based on shut-off and cooling effects. It also has the advantage that its foaming is not impaired by powder extinguishers which have previously been used.

In comparative tests with known AFFF Hitteln to di © showed the following advantages of the fire extinguishing agent concentrate according to the invention: ^..:. ·. ., ..-; -. '.

a) The quenched products were strongly cooled,

b) The extinguishing capability of the fire extinguishing device according to the invention exceeds by the same concentration the extinguishing capability of known means. , , ^:

<§} Düs © rfInsduitgsgemäß © Fire extinguishing agent. Concentrate can also be used in very low concentrations without loss of extinguishing power «,

d) The foam produced by the fire-extinguishing agent © is covered in the case © © Inas liquid hydrocarbon lückelos di © surface area _β so that no flammable gases could escape «

e) The fire extinguishing agent according to the invention does not provide ©

Burden of the environment because all constituents © are biologically degradable

Depending on the location of the fire and the type of fire, the fire extinguishing oil concentrate according to the invention can be brought to the source of the fire with portable or mobile equipment or it can be installed over almost © fire extinguishing system © are used. z _c B «controlled by fuses ₅ by optical or thermal © sensors, in sprinkler system β © te»

AujjjHJjl · ^^ ^:

The invention will be explained in more detail with reference to the following examples

Into a flask equipped with a tube and addition funnel was added 67.55% (by total weight) deionized water. The flask was maintained through a water bath at a temperature of 25 to 3G ⁰ G throughout the process "Then , with stirring, 10 gws were added. Octylphen

(Condensate of octylphenol sit IO Hol ethylene oxide}, and then 10 G & w * ~% N "N" {2-HydroKy © thyl) Koko © f © ttsäurearaid added The mixture was stirred waiter and then treated with 12.3 Gev ¥ _e -% © ulfonierteß Polyfluoralkylb © tain ^ "CQF ₁₇ CH ₂ (CH ₂ C0NH (CH) ₃ M !? ₂ (CH _2)?)" then another 0.15 Gsa, "were SQ ^ added | formalin and get © mixture wurd © until completely dissolved d @ r components stirred *

There was a turquoise © liquid having a viscosity of 98 cP at 20 ° C obtained Di * © liquid had a density of 1 * 02 and was tmischbare with water in all proportions Si © showed was a anionic character and d®r pH at 8 _e The freezing point was determined to be O C.

The concentrate is stable for a period of at least 5 to 6 Oahren and IAST with water in Meng © rs from 0.5 to 10 Gera * - mix% isühleoe _s wherein ztTOckisäßige concentrate ion 2 to 4 wt <>"'% of the concentrate respectively,

The mixture was mixed under the same conditions «wi © in Bsispi ©! I described © ind _e by sfihri * «öi® individual component © wö-reJesi in the following mixture © v @ r« abstniseen

Deionized water 71 ^ 25 g

Octylphenol polyethylene ether j 15 lj

Fatty acid alkanolsides 5% by weight »

Sulfonated polyfluoroalkyXbetaira:. 8 ^ 6

(40 % l

Stop agitating © and completely dissolve the granules. © polarized light is irradiated into the solution. »

Claims (2)

Invention statement % 1 »Liquid fire extinguishing agent in that there is a salary 3-20% by weight of alkylphenolpolyglycolethar,
2-18 G® \ N * -% fixed acid alkanolamide « 6-25% by weight of polyfluoroalkylbetaine and
20-80% by weight of ionised water having" 2 · Liquid extinguishing agent concentrate according to point 1 " characterized by the additional presence of O ₄ I to 3 G @ w ~ ~% formalin. 3. Liquid extinguishing agent-consentrate after at least one of the points © 1 and 2 _# characterized by »that the alkylphenol polyglycol ether has an alkyl radical of from 3 to 13 carbon atoms and in the polyglycolate! Contain 6 to 20 ethylene oxide units 4 "Liquid solution © l <" Kon2®ntrat naoh saene one of the points © 1 to 3 ₉ characterized in that the fatty acid alkanolaraid is a Fettsäureraono · » or fat ·» säureialkanolafaicl and from a @ r fatty acid init 6 bi © 24'Carbon atoms derives » 5a Liquid Feuerlöschraitfel ^ concentrate according to at least one d®r points 1 to 4 "wherein _B that the sulfonated © PoXyfluoralkylbetain dor general
formula C _n F CH ₂ C (CH ₂ CONH (CH ₂ ) ₃ Me ₂ (CH ₂ ) ₃ ) SO ₃ where η is a whole zebl of 4 to 10 and ρ is an integer of 12 to 24 and M is an alkali metal atom * 6. Liquid fire extinguishing agent "concentrate @ t after point I ₄ . characterized in that it has a content of 10 G © w ~% -. Octylphenolpolyglykolether, '10 Ge ^ φ-% N _f N> (2 ~ Hlydroxyethyl) kokosf6tt @ _l äureami'd 12.3 percent ""% sulfonated! Polyfluoroalkylbetaine d®r formula C ₈ F CH ₂ ((CH ₂ C0NH (CH ₂ ) ₃ Na ₂ (CH ₂ ) ₃ SO ₃ , 67 * 55 G © w "-% © ntionisiertem water and O _ä weight l5 '- ^ formalin having" 7, ancestor for the preparation of a liquid filter concentrate according to one of the items 1 to 8 , characterized in that at a teraprature at 15 to 50 ° C. with stirring 20 to 80 G © w * -% entionisier tes water are introduced and then 3 to wt «.-% Alkylph © nolpolyglykol®ther, 2 to 18 G®w, ~% fatty acid of 6 to 25 G8w *" -% sulfonated polyfluoro "alkyl betaine in the order indicated and given · if 0.1 to 3% formalin Gewu- be added "and the resulting mixture iwird stirred until complete dissolution of the components * 8 _β method according to item 7 characterized _{e '4,} the added alkylphenol having an alkyl group having 3 to 13 carbon atoms and 6 to 20 iro Polyglykolteil Ethylenoxicleinheiten contains " 9 «A method according to at least one of the points in 7 and 8, characterized _e" dAb the added © Fettsäurealkanolaroid a '© Fettsäur si? ~ Ono or Fettsauredialkanol "is ARAID and was derived from a fatty acid having 6 to 24 carbon atoms Oe method after at least © one of the points © 7 to 9 _S characterized in that ά & Β * the added sulfonated © Polyfluoralkylbetain the general formula where η is an integer from 4 to 10 ρ is an integer from 12 to 24 and N @ is one According to item 7, g @ k @ nns @, this causes _s and a to be © components 10% by weight of octylphenolpolyglycol @ th © r "10% by weight" ^ N _ff N ~ (2 ~ hydroxyethyl} coke fat $ a'ur®amide _l 12.3% by weight of polyfluoroalkyXb © tain of Forrael C (CH ₂ COOH (CH ₂ ) ₃ Na ₂ (CH ₂ ) ₃ ) SO _{3 <} 67 »55% by weight of deionized water and O _e 15 Gev $ a-% F © rsialin
were added _e 12 »A method according to at least one © ® d®r point © 7 to 11" characterized in "that in di @ © solution obtained Lieht a"