EP1412464B1 - Entfettungsmittel zum entfetten und/oder dekontaminieren der harten oberflächen - Google Patents

Entfettungsmittel zum entfetten und/oder dekontaminieren der harten oberflächen Download PDF

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Publication number
EP1412464B1
EP1412464B1 EP02764987A EP02764987A EP1412464B1 EP 1412464 B1 EP1412464 B1 EP 1412464B1 EP 02764987 A EP02764987 A EP 02764987A EP 02764987 A EP02764987 A EP 02764987A EP 1412464 B1 EP1412464 B1 EP 1412464B1
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EP
European Patent Office
Prior art keywords
degreasing
composition according
composition
surfactant
foam
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.)
Expired - Lifetime
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EP02764987A
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English (en)
French (fr)
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EP1412464A1 (de
Inventor
Bruno Fournel
Laetitia Vauclair
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Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Orano Demantelement SAS
Original Assignee
Commissariat a lEnergie Atomique CEA
Compagnie Generale des Matieres Nucleaires SA
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
    • G21F9/002—Decontamination of the surface of objects with chemical or electrochemical processes
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/025—Cleaning or pickling metallic material with solutions or molten salts with acid solutions acidic pickling pastes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel
    • C23G1/085—Iron or steel solutions containing HNO3
    • C11D2111/16—
    • C11D2111/42—

Definitions

  • the invention relates to a composition of degreasing, as well as to a gel and a foam of degreasing which comprise said composition.
  • the invention also relates to a method of degreasing and / or decontamination of a surface using said composition, said gel and / or said degreasing foam.
  • the present invention finds, for example, but without being limited to it, an application in the degreasing surfaces, especially surfaces such as appliances, components, soil, etc ... of a reprocessing plant irradiated nuclear fuel. These surfaces are, or may be in contact with one or more fatty substances that may be contaminated. It is therefore necessary to regularly clean these surfaces for the purpose of sanitation and / or decontamination radioactive.
  • one of these substances is a solvent called tributyl phosphate (TBP) which is used in cycles of extraction of radioactive metals such as uranium and plutonium. During these cycles extraction, this solvent acquires an activity particularly important radiochemical can contain up to a few tens of grams uranium and / or plutonium per liter. This solvent can then become a high-activity solvent (HA solvent) or a very high activity solvent (THA solvent).
  • HA solvent high-activity solvent
  • THA solvent very high activity solvent
  • the presence of these HA and THA solvents on some of the components of fuel reprocessing plants such as mixer-settlers, extraction columns, etc ... often leads to the formation of metal surfaces particularly organophiles that promote subsequent fatty deposits. These greasy deposits are almost insensitive to rinses by conventional aqueous solutions used in reprocessing and therefore require treatment specific.
  • TBP degradation products obtained by radiolysis of the solvent, such as dibutylphosphoric acid (HDBP), monobutylphosphoric acid (H 2 MBP) and salts and complexes of these acids with metals such as uranium, plutonium and metal cations likely to be present during the reprocessing of nuclear waste and especially spent fuel.
  • HDBP dibutylphosphoric acid
  • H 2 MBP monobutylphosphoric acid
  • salts and complexes of these acids with metals such as uranium, plutonium and metal cations likely to be present during the reprocessing of nuclear waste and especially spent fuel.
  • These surfaces may also be contaminated with oxides of uranium and plutonium as well as nitrate compounds of these elements.
  • the document FR-A-2 781 809 [1] describes degreasing compositions which can be used to degrease a metal surface having been in contact with a solvent such as TBP and / or its derivatives HDBP and H 2 MBP and their salts. and complexes, which comprises a basic medium such as sodium hydroxide, associated with two nonionic surfactants.
  • This degreasing composition thus uses a basic medium that promotes a chemical attack of fats to be eliminated by the classical reaction of saponification.
  • the presence in this environment of both surfactants reduces the concentration of soda and improve the spreading of the solution.
  • soda has the disadvantage of being little compatible with the vitreous matrices of conditioning of the ultimate waste from reprocessing of nuclear fuels.
  • the present invention specifically relates to a degreasing composition which makes it possible to eliminate disadvantages mentioned above, thanks to the use of an acidic medium.
  • the originality of this composition lies in the use of an inorganic acid, which solvent is little or not used in detergency.
  • nitric acid is used which is one of the acids used in nuclear fuel reprocessing plants.
  • the nitric acid concentration of the aqueous solution is selected to be able to dissolve therein sufficient amounts of the first and second nonionic surfactants.
  • the nitric acid concentration of the aqueous solution is 0.1 to 5 mol. L -1 .
  • the surfactants used are soluble in the nitric acid solution and are chosen so as to allow high solubilization of TBP, while leading to a solution having a temperature of appropriate disorder and a controlled foaming effect.
  • the first emulsifying nonionic surfactant is a polyethoxylated fatty alcohol, corresponding for example to the formula: R 1 - (OCH 2 CH 2 ) n -OH wherein n is an integer from 2 to 20, and R 1 is a hydrocarbon chain, saturated or unsaturated, having 9 to 18 carbon atoms.
  • n is an integer from 6 to 15 and R 1 is an alkyl group of 11 to 13 carbon atoms.
  • surfactant of this type can quote the product marketed by Goldschmidt (France) under the name REWOPAL X 1207 L. It comprises statistically 6 to 15 oxyethylenated units per molecule and a carbon chain with statistically 11 to 13 carbon atoms.
  • This nonionic surfactant has a hydrophilic-lipophilic balance value (HLB) high, 12.5.
  • nitric medium In 5M nitric medium, its solubility is several tens of grams at 25 ° C, for example of the order of 80 gL -1 . In a more concentrated nitric medium, for example 15M, the solubility is lower, of the order of 10 gL -1 .
  • the second wetting nonionic surfactant used in the composition of the invention makes it possible to reduce the foamability of the surfactant system and to increase the ability of the system to micellize surfactant; he is chosen from the family of block copolymers of ethylene oxide and propylene.
  • These nonionic surfactants are known for their good wetting properties and they additionally have a cloud point, which allows to set a cloud temperature beyond which the system becomes perfectly non-foaming, in adjusting their concentration in the composition. This property is interesting in terms of safety because it provides a simple way to control foaming untimely when applying to scale industrial.
  • Degreasing a surface consists in particular of solubilize in the micelles formed by the association surfactants in the aqueous solution, the substance (s) present on the surface to be degreased.
  • These micelles are formed in particular with fatty alcohol, saturated or unsaturated, polyethoxylated and contain the (the) fatty substance (s) solubilized (s).
  • Micelles are dynamic particles that are form and disintegrate constantly in the solution.
  • concentration of one of the surfactants of the composition according to the invention is too weak, in particular in relation to the quantity of substance (s) fat (s) to dissolve, the micelles can be dissociate and release the fatty substance (s) which is then redeposited on the degreased surfaces.
  • the dissociation of the micelles is visible and is translated by the formation of a disorder in the solution. This dissociation can occur when the composition according to the invention is saturated in substance (s) fat (s), and / or from a certain temperature.
  • the saturation of the composition according to the invention by a fatty substance can be highlighted by a measure of the "cloud point" of this composition.
  • the cloud point is expressed in degrees Celsius (° C).
  • the cloud point of a nonionic surfactant corresponds to a partial dehydration of the chain hydrophilic, and this translates, if the temperature of the point of trouble is reached, by the separation of phases; that is, the demixing of the surfactant.
  • the cloud point of the composition is greater than the temperature used for degreasing, for example about 20 ° C, when the degreasing is carried out at ambient temperature or a temperature greater than 20 ° C.
  • a high cloud point also translates a high capacity for dissolving a substance fat.
  • the measure of the cloud point therefore allows in particular to measure the degreasing efficiency of the composition according to the invention. This efficiency of degreasing can also be measured by a measure the wettability of this surface.
  • the concentration of the second wetting surfactant of the composition for get a cloud point higher than the temperature to which the degreasing will be carried out.
  • the second wetting surfactant is preferably constituted by a block copolymer of ethylene oxide and propylene oxide comprising from 1 to 8 ethylene oxide units and from 3 to 12 units propylene oxide.
  • ANTAROX FM 33 By way of example of a block copolymer of this type which can be used in the invention, mention may be made of the product marketed by Rhodia under the name ANTAROX FM 33. It has a solubility in concentrated nitric acid (15 M). at 20 ° C, from 3.0 to 3.5 gL -1 .
  • concentrations are preferably chosen such that the total concentration of surfactants in the composition is in the range from 1 to 20 gL -1 .
  • the quantity of (s) first (s) surfactant (s) is greater than that of the second (s) surfactant (s).
  • the mass ratio of the first surfactant (s) emulsifier (s) on the second surfactant (s) wetting agent (s) is from 2 to 10, preferably from about 4.
  • the second preferred wetting surfactant is present at 2g / L
  • the first emulsifying surfactant is present at 8g / L.
  • a third surfactant constituted for example by an ester phosphoric, in order to reduce the foamability of surfactant system.
  • This phosphoric ester may correspond to the formula C 5 H 17 OOP (OR 2 ) 2 in which R 2 is a hydrocarbon group of 4 to 10 carbon atoms.
  • a third surfactant of this type mention may be made of the product marketed by Quarré Chim under the name VICTAWET 12. It may be present in the composition at a concentration of 0.1 to 3 gL -1 , for example 0.5 gL -1 .
  • TBP tributyl phosphate
  • TBP in concentrations very weak as an antifoam agent for very punctual applications related to foaming untimely during the application of the treatment, especially when transferring liquid compositions in the pumping bodies of the plant. He can be also integrated from the manufacture of the composition.
  • This solution has the advantage, in the case of a application to nuclear reprocessing, not to require the addition of a chemical additive of composition different from those already present in the equipment.
  • the liquid degreasing composition of the invention is particularly interesting because it makes it possible to ensure the simultaneous solubilization of fats (TBP, HDBP, H 2 MBP and, a priori, the U and Pu complexes of DBP and MBP) and in particular the oxides of uranium or plutonium as well as nitrated compounds derived from these elements and insoluble in soda medium. It also makes it possible to ensure the solubilization of any corrosion products of the metal surface, by carrying out the treatment in a single step.
  • liquid degreasing composition of the invention can be used in this form and put implemented in various ways, for example under the form of soaking or spraying baths.
  • the foam can add to the foam one or more additives chosen from those described in FR-A-2 679 458 [2].
  • the foam like the degreasing liquid can be used for degreasing and / or decontamination of a surface, bringing the surface into contact with the foam or liquid to extract in it the products contaminating this surface.
  • the formulation can be used in the form of foam and be circulated for cleaning Surrounding. It can also be sprayed at using an applicator for example a foam gun.
  • the proposed wording as well as the proportions indicated are compatible with a use of the produced in the form of foam. We will place our however in the higher range of the indicated concentrations for the two main surfactants.
  • the foamability of the system can also be enhanced or altered by addition of third party products such as those described in reference [2].
  • a destabilization be obtained by adding commercial Amonyl 675 SB by SEPPIC (sulfo betaine) up to 1.5% by weight.
  • the stability of the foam can be reinforced by the addition of a viscosizer for example from the xanthan gum in mass proportions less than 0.2%.
  • the implementation of the foam can also be carried out as described in the references [2] and [3].
  • the contacting can be carried out by putting the foam into circulation in the enclosure. You can also spray the foam using an applicator, for example a foam gun, or still use the techniques described in documents FR-A-2 679 458 [2] and FR-A-2 773 725 [3] for generate and apply the foam.
  • the degreasing composition in the form of gel, in it adding a suitable inorganic viscosifying agent such than alumina or silica.
  • the gel can be applied to the surface to be decontaminated using an applicator, for example with a brush or by spraying with a spear.
  • an applicator for example with a brush or by spraying with a spear.
  • the gel can be applied to the surface to be decontaminated by spraying, dipping, dewatering, packaging or by means of a paintbrush. It can then be removed from the surface by detaching it by a simple rinsing with water, for example by means of a jet of water.
  • the gel is spray-applied, for example under a pressure (AIRLESS compressor) at the injector from 500 to 1000 N. cm -2 .
  • the invention also relates to a method of decontaminating and / or degreasing a surface which involves bringing the surface into contact with a liquid composition, a mousse or a gel according to the invention, to extract in this composition, foam or gel, the products contaminating this surface.
  • TBP tributyl phosphate
  • HDBP dibutylphosphoric acid
  • H 2 MBP monobutylphosphoric acid
  • FIG. 1 is a diagram illustrating the evolution of the apparent solubility of TBP, S TBP (in gL -1 ) as a function of the nitric acid concentration of the medium (mol.L -1 ), in the case of a solution of nitric acid alone and in the case of a degreasing composition according to the invention consisting of HNO 3 containing 8 gL -1 of REWOPAL and 2 gL -1 of ANTAROX.
  • FIG. 2 is a diagram illustrating, by way of comparison, the evolution of the apparent solubility of TBP, S TBP (in gL -1 ) as a function of the concentration of NaOH (mol.L -1 ) of a composition comprising the same surfactants. at the same concentrations as the composition of Figure 1, replacing HNO 3 with NaOH.
  • FIGS. 3 and 4 are curves illustrating the degreasing kinetics of a degreasing composition of the invention in a 1 M nitric medium (FIG. 3) and a degreasing composition of the invention in a 5 M nitric medium (FIG. 4), ie the evolution of the contact angle A c (°) as a function of the soaking time t (s).
  • FIG. 5 is a bar graph illustrating the effect of the degreasing compositions of the invention and the effect of a solution of pure nitric acid or of a pure sodium hydroxide solution on the americium decontamination of metal surfaces, expressed in surface activity 241 Am (Bq / cm 2 ) before and after decontamination.
  • FIG. 1 illustrates the evolution of the apparent solubility S TBP (in gL -1 ) as a function of the concentration of HNO 3 (in mol.L -1 ).
  • TBP is solubilized in the formed micelles by the combination of surfactants in the composition. These micelles appear for surfactant concentrations above critical micellar concentration (CMC).
  • CMC critical micellar concentration
  • the heart hydrophobic micelle acts as a microreactor allowing the solubilization of organic solvents. The apparent solubility resulting from the incorporation of the organic matter in the micelles is then very greater than the true solubility of TBP in the medium reference, as shown in Figure 1.
  • FIG. 2 shows, by way of comparison, the results obtained when the same surfactants are used in a basic medium consisting of sodium hydroxide, the concentration of REWOPAL being 8 gL -1 and the concentration of ANTAROX being 2 gL -1 .
  • FIG. 2 shows the evolution of the apparent solubility of TBP S TBP (in gL -1 ) as a function of the concentration of NaOH (in mol.L -1 ).
  • Example 2 Kinetics of surface degreasing with two degreasing compositions according to the invention
  • composition n ° 1 1M nitric acid Composition n ° 1 1M nitric acid, REWOPAL 8 gL -1 and ANTAROX 2 gL -1
  • Composition n ° 2 5M nitric acid REWOPAL 8 g. L -1 and ANTAROX 2 gL -1 .
  • an initially clean 304 L stainless steel blade is covered with a deposit composed of a mixture of TBP, HDBP and H 2 MBP in the following mass proportions: TBP 70%, HDBP 18%, H2MBP 12%.
  • An indirect measurement of initial contact angle is then performed using a Krüss K12 type blade tensiometer. The evolution of the contact angle is then followed after dipping the blade in the degreasing composition. A zero contact angle corresponds to perfect degreasing.
  • FIG. 3 illustrates the evolution of the contact angle A c (in °) as a function of the soaking time t (in s) of two blades in the composition No. 1.
  • FIG. 4 illustrates the evolution of the contact angle A c (in degrees) as a function of the soaking time t (in seconds) for several tests carried out with composition No. 2.
  • the initial mass of the deposit was 45 ⁇ 4 mg.
  • Example 3 Reduction of foaming by adding a third-party product
  • the presence of TBP has, due to the hydrophobicity of this molecule a strong anti-foaming power.
  • the antifoam of the TBP is evaluated. This evaluation is carried out using a column filled with solution in which air is introduced through a sinter to form a foam. The experiment is stopped when a predefined maximum time is reached (in this case 280 seconds) or when the maximum height available on the column is reached (here 26 cm). The maximum foam height obtained or the time required to obtain it (Table 1, 3rd column) and the time taken by the foam to fall from a height equal to half the maximum height reached are determined (Table 1, 4th column). These tests are carried out with compositions No. 1 and No. 2 of the preceding example by adding 0.6 or 0.05 gL -1 of TBP.
  • Example 4 Decontamination of metal parts contaminated with americium 241
  • the pieces contaminated with americium-241 are immersed in the following degreasing compositions: Composition n ° 3 HNO 3 5M, ANTAROX 2 gL -1 , REWOPAL 8 gL -1 Composition n ° 4 HNO 3 0.5 M, ANTAROX 2 g. L -1 , REWOPAL 8 gL -1 , Composition n ° 5 HNO 3 0, 5 M, ANTAROX 2 gL -1 , REWOPAL 8 gL -1 for 6 hours at 40 ° C.
  • the tests are performed with initial activity levels in different 241 Am.
  • compositions of the invention is clearly superior to that of a solution of concentrated nitric acid or concentrated soda.
  • the processed parts come from equipment of process for the reprocessing of nuclear fuels. They have been in contact with TBP and its degradation.

Claims (20)

  1. Flüssige Entfettungs-Zusammensetzung, die eine wässrige Salpetersäurelösung umfasst, die enthält:
    mindestens ein erstes emulgierendes, nicht-ionisches Tensid, bestehend aus einem polyethoxylierten Fettalkohol, und
    mindestens ein zweites benetzendes, nicht-ionisches Tensid, bestehend aus einem Ethylenoxid/Propylenoxid-Copolymer.
  2. Zusammensetzung nach Anspruch 1, in der die Salpetersäure-Konzentration in der wässrigen Lösung 0,1 bis 5 mol/L beträgt.
  3. Zusammensetzung nach einem der Ansprüche 1 und 2, in der die Gesamtkonzentration der Tenside 1 bis 20 g/L beträgt.
  4. Zusammensetzung nach einem der Ansprüche 1 bis 3, in der das erste emulgierende Tensid ein polyethoxylierter Fettalkohol der Formel ist: R1-(OCH2CH2)n-OH in der n steht für eine ganze Zahl von 2 bis 20 und R1 steht für eine gesättigte oder ungesättigte Kohlenwasserstoffkette mit 9 bis 18 Kohlenstoffatomen.
  5. Zusammensetzung nach Anspruch 4, in der n für eine ganze Zahl von 6 bis 15 und R1 für eine Alkylgruppe mit 11 bis 13 Kohlenstoffatomen stehen.
  6. Zusammensetzung nach einem der Ansprüche 1 bis 5, in der das Ethylenoxid/Propylenoxid-Copolymer ein Blockcopolymer darstellt, das 1 bis 8 wiederkehrende Ethylenoxid-Einheiten und 3 bis 12 wiederkehrende Propylenoxid-Einheiten umfasst.
  7. Zusammensetzung nach einem der Ansprüche 1 bis 6, in der das Massenverhältnis zwischen dem (den) ersten emulgierenden Tensid(en) und dem (den) zweiten emulgierenden Tensid(en) 2 bis 10, vorzugsweise etwa 4, beträgt.
  8. Zusammensetzung nach den Ansprüchen 6 und 7, die das emulgierende erste Tensid in einer Menge von 8 g/L und das benetzende zweite Tensid in einer Menge von 2 g/L enthält.
  9. Zusammensetzung nach einem der Ansprüche 1 bis 8, die außerdem ein drittes Tensid, bestehend aus einem Phosphorsäureester, umfasst.
  10. Zusammensetzung nach Anspruch 9, in welcher der Phosphorsäureester der Formel entspricht: C5H17OOP(OR2)2 in der R2 für eine Kohlenwasserstoffgruppe mit 4 bis 10 Kohlenstoffatomen steht.
  11. Zusammensetzung nach einem der Ansprüche 9 und 10, in der die Konzentration des dritten Tensids 0,1 bis 3 g/L, vorzugsweise 0,5 g/L, beträgt.
  12. Zusammensetzung nach einem der Ansprüche 1 bis 8, die außerdem Tributylphosphat in einer Menge von 0 bis 0,5 g/L als Antischaummittel umfasst.
  13. Entfettungs-Schaum, der eine Gasphase und eine Zusammensetzung nach einem der Ansprüche 1 bis 12 umfasst.
  14. Schaum nach Anspruch 13, der darüber hinaus ein oder mehrere Additive umfasst.
  15. Entfettungs-Gel, das eine Entfettungszusammensetzung nach einem der Ansprüche 1 bis 12 und ein anorganisches Viskosifizierungsmittel umfasst.
  16. Gel nach Anspruch 15, in dem das Viskosifizierungsmittel Aluminiumoxid oder Siliciumdioxid ist.
  17. Verfahren zum Entfetten und/oder Dekontaminieren einer Oberfläche, das darin besteht, dass man die Oberfläche mit einer Zusammensetzung nach einem der Ansprüche 1 bis 12 in Kontakt bringt, um die Produkte, welche diese Oberfläche kontaminieren, in diese Zusammensetzung zu extrahieren.
  18. Verfahren zum Dekontaminieren und/oder Entfetten einer Oberfläche, das darin besteht, dass man die Oberfläche mit einem Schaum nach einem der Ansprüche 13 und 14 in Kontakt bringt, um die Produkte, welche diese Oberfläche kontaminieren, in diesen Schaum zu extrahieren.
  19. Verfahren zum Dekontaminieren und/oder Entfetten einer Oberfläche, das darin besteht, dass man die Oberfläche mit einem Gel nach einem der Ansprüche 15 und 16 in Kontakt bringt, um die Produkte, welche diese Oberfläche kontaminieren, in diesen Schaum zu extrahieren.
  20. Verfahren nach einem der Ansprüche 17 bis 19, in dem die Produkte, welche die Oberfläche kontaminieren, eines oder mehrere der folgenden Produkte darstellen: Tributylphosphat (TBP), Dibutylphosphorsäure (HDBP), Monobutylphosphorsäure (H2MBP) und ihre Salze und Komplexe von Uran, Plutonium und radioaktiven Metallen und die Oxide und Nitrate von Uran und Plutonium.
EP02764987A 2001-07-17 2002-07-16 Entfettungsmittel zum entfetten und/oder dekontaminieren der harten oberflächen Expired - Lifetime EP1412464B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0109519 2001-07-17
FR0109519A FR2827610B1 (fr) 2001-07-17 2001-07-17 Composition de degraissage utilisable pour le degraissage et/ou la decontamination de surfaces solides
PCT/FR2002/002524 WO2003008526A1 (fr) 2001-07-17 2002-07-16 Composition de degraissage utilisable pour le degraissage et/ou la decontamination de surfaces solides

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EP1412464A1 EP1412464A1 (de) 2004-04-28
EP1412464B1 true EP1412464B1 (de) 2005-11-30

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US (1) US20040163671A1 (de)
EP (1) EP1412464B1 (de)
JP (1) JP2004535509A (de)
CN (1) CN1244676C (de)
AT (1) ATE311431T1 (de)
DE (1) DE60207723T2 (de)
ES (1) ES2252507T3 (de)
FR (1) FR2827610B1 (de)
RU (1) RU2004104466A (de)
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CN103215141B (zh) * 2013-04-18 2014-10-29 西南科技大学 可完全消泡的放射性核素生物质泡沫去污剂及其使用方法
CL2014003398A1 (es) * 2014-12-12 2015-08-07 Leyton Nelson Roberto Osses Composición limpiadora que remueve y previene la incrustación y reincrustación de superficies metálicas; y metodo para remover y prevenir las incrustaciones de superficies metalicas.
DE102015201791A1 (de) * 2015-02-03 2016-08-04 Aktiebolaget Skf Verfahren zum Brünieren von Wälzlagerringen
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AU2018357917A1 (en) * 2017-10-30 2020-05-07 Takeda Pharmaceutical Company Limited Environmentally compatible detergents for inactivation of lipid-enveloped viruses
CN111206253A (zh) * 2018-11-22 2020-05-29 艺康美国股份有限公司 用来增强污垢去除的酸性cip/cop清洗组合物
CN111020604A (zh) * 2019-12-30 2020-04-17 奎克化学（中国）有限公司 用于超高压喷淋的水基清洗剂及其制备方法和用途
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ATE311431T1 (de) 2005-12-15
DE60207723T2 (de) 2006-08-03
FR2827610B1 (fr) 2005-09-02
JP2004535509A (ja) 2004-11-25
CN1555408A (zh) 2004-12-15
RU2004104466A (ru) 2005-07-10
EP1412464A1 (de) 2004-04-28
DE60207723D1 (de) 2006-01-05
WO2003008526A1 (fr) 2003-01-30
US20040163671A1 (en) 2004-08-26
CN1244676C (zh) 2006-03-08
FR2827610A1 (fr) 2003-01-24
ES2252507T3 (es) 2006-05-16
UA76161C2 (en) 2006-07-17

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