WO1993017772A1 - Agent regulateur de moussage a base de paraffine - Google Patents
Agent regulateur de moussage a base de paraffine Download PDFInfo
- Publication number
- WO1993017772A1 WO1993017772A1 PCT/EP1993/000462 EP9300462W WO9317772A1 WO 1993017772 A1 WO1993017772 A1 WO 1993017772A1 EP 9300462 W EP9300462 W EP 9300462W WO 9317772 A1 WO9317772 A1 WO 9317772A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- water
- paraffin wax
- mixture
- alkali
- Prior art date
Links
Classifications
-
- 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
- C11D11/00—Special methods for preparing compositions containing mixtures of detergents ; Methods for using cleaning compositions
- C11D11/02—Preparation in the form of powder by spray drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
-
- 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
- C11D1/38—Cationic compounds
- C11D1/52—Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
- C11D1/528—Carboxylic amides (R1-CO-NR2R3), where at least one of the chains R1, R2 or R3 is interrupted by a functional group, e.g. a -NH-, -NR-, -CO-, or -CON- group
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0026—Low foaming or foam regulating compositions
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/18—Hydrocarbons
Definitions
- the invention relates to a defoamer mixture which consists of carboxylic acid bisa iden and certain paraffin waxes, a pourable and free-flowing foam regulating agent, in particular for use in the production of detergents and cleaning agents, comprising water-soluble or water-dispersible carrier material and defoamer mixture adsorbed thereon. and a method for producing such foam control agents.
- polysiloxanes are known to be comparatively complex to produce with a known good defoaming effect and have the disadvantage that they are often perceived as not completely satisfactory in terms of their biodegradability in the waste water.
- Other agents containing bisamides are known from European patents EP 75437 and EP 94250. Agents described there, however, contain silicones and are out of the question for the reasons mentioned.
- the German published patent application DT 2857 155 discloses detergents with a foam regulating agent which contains hydrophobic silicon dioxide and a mixture of solid and liquid hydrocarbons, optionally in a mixture with fatty acid esters. Due to the high content of hydrocarbon which is liquid at room temperature from 22.5% by weight to about 98% by weight, there is a risk of clumping in such foam regulating agents.
- the object was accordingly to provide a defoaming mixture which is used in detergents and cleaning agents over a wide temperature range, that is to say in particular in the cold washing range and at medium washing temperatures, but also in the hot washing range, suppressing disruptive foaming.
- a defoaming mixture which is used in detergents and cleaning agents over a wide temperature range, that is to say in particular in the cold washing range and at medium washing temperatures, but also in the hot washing range, suppressing disruptive foaming.
- European patent application EP 309931 describes foam regulating agents which do not achieve the stated object optimally only because they are dependent on a relatively complex mixture of paraffin wax and microcrystalline paraffin wax.
- these agents in some cases have a defoamer performance which is perceived as inadequate and cannot always be incorporated satisfactorily in a stable manner in powdered detergents or cleaning agents.
- foam regulating agents which contain carboxylic acid bisamide and paraffin wax with a relatively narrow melting range.
- the invention accordingly relates to a defoamer mixture which is free from siloxane polymers and emulsifying or dispersing surfactants, comprising a) 70% by weight to 99.9% by weight of a paraffin wax or paraffin wax mixture which is solid at room temperature and which a temperature below 90 ° C is 100% by weight in liquid form, and b) 0.1% by weight to 30% by weight of one of C2-7-diamines and Ci2-22 " ⁇ ar ' DOn ' acid-derived muskrid.
- Another object of the invention is a granular, free-flowing foam control agent consisting of
- (b) contains 5% by weight to 30% by weight of a bisamide derived from C2-7 diamines and saturated Ci2-22 "carboxylic acids, the agent being characterized in that it is free from silica, the carrier material (I ) is phosphate-free and water-soluble or water-dispersible and the paraffin wax (component Ha) is solid at room temperature and is 100% by weight in liquid form at a temperature below 90 ° C.
- the defoamer mixture preferably contains 80% by weight to 92% by weight, in particular 82% by weight to 90% by weight of paraffin wax (a) and 8% by weight to 20% by weight, in particular 10% by weight .-% to 18 wt .-% bisamide (b).
- the defoamer mixture according to the invention is used in particular for the production of detergents or cleaning agents.
- the foam regulating agent according to the invention preferably contains 80% by weight to 99.5% by weight, in particular 88% by weight to 98% by weight of carrier material (I) and 0.5% by weight to 20% by weight, contain in particular 2% by weight to 12% by weight of defoaming mixture (II).
- the phosphate-free carrier material (I) has a granular structure and consists of water-soluble or water-dispersible, surfactant-free compounds, primarily of inorganic and / or organic salts which are suitable for use in detergents and cleaning agents. It preferably contains both alkali carbonate and alkali silicate, the latter in particular being responsible for the good storage properties of the agents according to the invention.
- the carrier material preferably contains 1% by weight to 50% by weight of alkali carbonate, up to 70% by weight of alkali sulfate, up to 50% by weight of alkali alumosilicate and 10% by weight to 50% by weight of alkali silicate, but can additionally contain other water-soluble or water-insoluble, water-dispersible substances.
- the materials which can additionally be used include, in particular, alkali metal chloride and layered silicate, for example bentonite.
- the alkali silicate is preferably a compound with a molar ratio of alkali oxide to SiO 2 of 1: 1.5 to 1: 3.5.
- the use of such silicates results in particularly good grain properties, in particular high abrasion stability and nevertheless high dissolution rate in water.
- the aluminosilicates which can be used in the carrier material for the foam regulating agents according to the invention include, in particular, the zeolites, for example zeolite NaA and NaX.
- suitable organic carrier materials are the acetates, tartrates, succinates, carboxyethylsuccinates and the alkali metal salts of aminopolycarboxylic acids, such as NTA or EDTA, hydroxyalkanephosphonates and aminoalkane polyphosphonates, such as l-hydroxyethane-1, l-diphosphonate, ethylenediamine and diethylene triamine pentamethylene phosphonate. It is also possible to use water-soluble salts of polymeric or copolymeric carboxylic acids, for example polyacrylates and copolymers of acrylic acid and maleic acid. Mixtures of inorganic and organic salts can often be used with advantage.
- Such additional organic carrier materials are preferably not contained in the carrier salt mixture in excess of 20% by weight, in particular in amounts of 2% by weight to 15% by weight, in each case based on the total carrier material. Loading preferred alkali metal in the alkali salts mentioned is sodium in all cases.
- the carrier material can moreover contain film-forming polymers, for example polyethylene glycols, polyvinyl alcohols, polyvinylpyrrolidones, polyacrylates and cellulose derivatives.
- Usable cellulose ethers are, in particular, alkali carboxymethyl cellulose, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose and so-called cellulose mixed ethers, such as methyl hydroxyethyl cellulose and methyl hydroxypropyl cellulose, and mixtures thereof.
- the carboxymethyl cellulose usually having a degree of substitution of 0.5 to 0.8 carboxymethyl groups per anhydroglucose unit and the methyl cellulose having a degree of substitution of 1.2 to 2 methyl groups per anhydroglucose unit.
- the mixtures preferably contain alkali carboxymethyl cellulose and nonionic cellulose ethers in weight ratios of 80:20 to 40:60, in particular 75:25 to 50:50.
- Such cellulose ether mixtures can be used in solid form or as aqueous solutions, which can be pre-swollen in the usual way.
- Such film-forming polymers are preferably not contained in the carrier material in excess of 5% by weight, in particular from 0.5% by weight to 2% by weight, based on the total carrier material.
- the paraffin wax (component a) contained in the defoamer mixture (II) generally represents a complex mixture of substances without a sharp melting point.
- its melting range is usually determined by differential thermal analysis (DTA), as described in "The Analyst” B ⁇ (1962), 420, and / or its freezing point. This is the temperature at which the paraffin changes from the liquid to the solid state by slow cooling.
- DTA differential thermal analysis
- Waxes which solidify in the range from 30 ° C. to 90 ° C., in particular in the range from 55 ° C. to 71 ° C., are preferably used.
- paraffin wax mixtures which appear solid at room temperature can contain different proportions of liquid paraffin.
- this liquid fraction is so low as possible and preferably missing entirely.
- Preferred paraffin wax mixtures have a liquid fraction of less than 10% by weight at 30 ° C., in particular 2% to 5% by weight, and a liquid fraction of less than 30% by weight at 40 ° C. preferably from 5% by weight to 25% by weight and in particular from 5% by weight to 15% by weight, at 60 ° C.
- the temperature at which a liquid content of 100% by weight of the paraffin wax is reached is still below 85 ° C., in particular at 75 ° C. to 82 ° C., in particularly preferred paraffin wax mixtures.
- Paraffin waxes which can be used according to the invention are, for example, Lunafle® ( R ) 902 E 36 from Guer and Deawa ⁇ ( R ) DEW 5419 and DEW 5420 from DEA Mineralöl AG.
- Component (b) of the defoamer mixture consists of bisamides which are derived from saturated fatty acids with 12 to 22, preferably 14 to 18 C atoms and from alkylenediamines with 2 to 7 C atoms.
- Suitable fatty acids are lauric acid, myristic acid, stearic acid, arachic acid and behenic acid, and mixtures thereof, as can be obtained from natural fats or hydrogenated oils, such as tallow or hydrogenated palm oil.
- Suitable diamines are, for example, ethylenediamine, 1,3-propylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, p-phenylenediamine and toluenediamine.
- Preferred diamines are ethylenediamine and hexamethylenediamine.
- Particularly preferred bisamides are bis-myristoyl-ethylenediamine, bis-palmitoyl-ethylenediamine, bis-stearoyl-ethylenediamine and mixtures thereof, and the corresponding derivatives of hexamethylenediamine.
- the bisamides are preferably in finely divided form and in particular have an average grain size of less than 50 ⁇ m.
- the maximum grain size of the particles is preferably below 20 ⁇ m, with at least 50%, in particular at least 75%, of the particles being smaller than 10 ⁇ m.
- These details regarding the particle size relate to the known determination method with the "Coulter Counter”.
- the defoamer mixture (II) can be prepared in such a way that the finely divided bisamide (component b) is introduced into a melt of component (a) and homogenized therein by intensive mixing.
- the melt should have a temperature of at least 90 ° C and at most 200 ° C.
- the temperature is preferably 100 ° to 150 ° C.
- a stable dispersion of the bisamide particles is present in the paraffin matrix, which can be brought about by a particle size corresponding to the definition mentioned.
- a bisamide can be used and dispersed which has the appropriate particle size from the outset, or a coarser starting material is used and the melt is subjected to grinding treatment using colloid mills, tooth mills or ball mills until the desired particle size is reached is.
- a complete melting of the bisamides in the paraffin melt and subsequent rapid cooling to temperatures below the solidification point of the bisamides with simultaneous homogenization of the melt can also lead to a correspondingly fine particle size distribution of the bisamides.
- An essential feature of the defoamer mixture according to the invention as well as the foam regulating agent according to the invention is the absence of surfactants in the mixture of substances.
- Surfactants are to be understood as surface-active compounds with a hydrophobic part of the molecule and hydrophilic anionic, ampholytic, zwitterionic, cationic and nonionic groups which have a cleaning or emulsifying effect in aqueous solution or dispersion.
- the hydrophobic part of the molecule generally consists of a hydrocarbon residue or a substituted hydrocarbon residue or a poorly water-soluble polyglycol ether residue, for example a polypropylene glycol or polybutylene glycol ether residue.
- the foam control agent according to the invention contains 2% by weight to 5% by weight of alkali carbonate, in particular sodium carbonate, 10% by weight to 30% by weight of alkali silicate, in particular sodium silicate, 10% by weight to 75% %
- alkali sulfate in particular sodium sulfate
- up to 35% by weight in particular 10% by weight to 30% by weight of zeolite
- up to 5% by weight in particular 1% by weight to 3% by weight % water-soluble or water-swellable polymer, in particular cellulose ether, and up to 17% by weight, in particular 5% by weight to 15% by weight, of water.
- a further preferred embodiment of the foam regulating agent according to the invention contains 25% by weight to 45% by weight of alkali carbonate, 5% by weight to 20% by weight of alkali silicate, up to 50% by weight, in particular 15% by weight to 45% by weight, zeolite and / or alkali sulfate, up to 3% by weight, in particular 0.5% by weight to 2% by weight, water-soluble or water-swellable polymer and up to 20% by weight %, in particular 3% by weight to 18% by weight, of water.
- a foam regulating agent according to the invention can be produced by applying the molten defoamer mixture (II) to the granular carrier material (I), for example by successive admixing, in particular as a spray, to the carrier grain.
- the carrier grain which can be produced in the usual way by spray drying an aqueous suspension of the carrier salts, is kept in motion by mixing elements or by fluidization in order to ensure a uniform loading of the carrier material.
- the spray mixers used for this can be operated continuously or discontinuously.
- One embodiment for the production consists in hurling the granular carrier material in a continuous stream through the likewise continuously generated spray zone of the at least partially melted defoamer mixture, whereby residence times of the carrier material in the hot spray zone of mostly less than 1 second can be achieved . Furthermore, it is possible immediately afterwards to cool the particles of the foam regulating agent with the aid of a gas stream, so that the thermal loads on the material can be kept extremely low.
- the method described above uses a type of method as is known, for example, from European patent application EP 48312.
- a wheel-shaped mixing device is described in this document as a device for carrying out the method, in which two individually designed and driven wheel-shaped disks are superimposed. The solid powder is fed to one disk, the liquid component below is charged with the liquid component.
- Both disks run at high rotational speeds, which can range from a few 100 to a few 1000 revolutions per minute.
- the respective pressurized writing surfaces and in particular the edge of the disk carrying the liquid are designed such that on the one hand the spray zone is thrown off and continuously reproduced from the edge of the wheel running at high rotational speed, and on the other hand this is continuous with the other wheel-shaped element ⁇ nuously supplied granular material thrown through this spray zone of the liquid phase. Because of the high working speed, the two material phases come into contact with each other very briefly and thus only a very short time contact of the solid particles with the warm or hot spray phase.
- the method can be carried out particularly well with the device described in EP 48 312, but it is not restricted to devices of this type. It is essential to set a relatively short contact time, which is achieved by the solid material being thrown through a continuously generated spray zone, the solid material possibly being cooled in front of and / or behind the spray zone.
- the foam regulating agent is prepared in such a way that the carrier material (I) is dissolved or slurried in water, the defoamer mixture (II) is dispersed therein and this slurry is then spray-dried.
- a water-soluble, non-surfactant dispersion stabilizer in the form of a water-swellable polymer is preferably added to the dispersion, since the components of the defoamer mixture are generally not sufficiently soluble in the aqueous slurry.
- cellulose ethers mentioned examples of these are the cellulose ethers mentioned, homo- and copolymers of unsaturated carboxylic acids, such as acrylic acid, maleic acid and copolymerizable vinyl compounds, such as vinyl ether, acrylamide and ethylene.
- the addition of such compounds which act as dispersion stabilizers in the aqueous slurry is preferably not more than 5% by weight, in particular 1% by weight to 3% by weight, based on the composition.
- the water content of the slurry can be 30% to 60% by weight.
- the spray-drying of the dispersion can be carried out in a known manner in plants provided for this purpose, so-called spray towers, by means of hot drying gases conducted in cocurrent or countercurrent. In this case, drying by drying gases carried in cocurrent with the spray material is preferred, since the activity loss attributable to the potential hot air volatility of some components of the defoamer mixture can be reduced to a minimum.
- An inventive foam control agent preferably consists of particles having particle sizes of not more than 2 mm, in particular from 0.1 mm to "1.6 mm. Preferably, it contains not more than 5 wt .-%, particularly not more than 2 wt .-% of particles with a particle size of more than 0.8 mm and not more than 30% by weight, in particular not more than 25% by weight of particles with a particle size of less than 0.2 mm
- the foam control agent according to the invention preferably has a bulk density in the range of 300 grams per liter to 900 grams per liter, in particular from 450 grams per liter to 800 grams per liter It is preferably used for the production of powdered detergents or cleaning agents, another advantage of the foam regulating agents according to the invention being their small amount used and good defoamer performance It is thus possible to achieve the defoamer performance of conventional silicone defoamers in high-temperature washing at about 90 ° C.
- the foam regulators according to the invention are generally superior to the previously used defoamers.
- the foam control agents according to the invention have a defoamer action which is superior in particular to silicone foam inhibitors in aqueous solutions which contain alkyl polyglycoside and / or linear alkyl sulfate based on fatty alcohol and / or neutralized sulfonation products of fatty acid lower alkyl esters, so-called ester sulfonates, as surfactant component.
- the surfactant component of which is an alkyl sulfate with an alkyl group with 12 to 22 C atoms, an alkyl polyglycoside, in particular based on glucose, with an alkyl group with 12 to 18 C atoms, an alkali salt a sulfonation product of a methyl or ethyl ester of a fatty acid having 12 to 22 carbon atoms or a mixture of these ent.
Abstract
Dans le cas d'agents régulateurs de moussage coulants et granuleux, utilisés notamment dans la fabrication d'agents de lavage et de nettoyage, se composant d'un porteur (I) granuleux sans tensioactif et d'un mélange antimousse (II) homogène adsorbé, comportant ni polymère de siloxane ni tensioactif et contenant 70 à 95 % en poids d'une paraffine dure, ainsi que 5 à 30 % en poids d'un bisamide dérivé de diamines en C2-7 et d'acides carboxyliques en C12-22 saturés, il faut améliorer leur efficacité sur une large plage de températures, c'est-à-dire notamment dans le domaine du lavage à froid et pour des températures de lavage moyennes, ainsi que leur stabilité d'efficacité et au stockage, lorsque lesdits agents sont mélangés avec les composants des agents de lavage habituels. L'invention a résolu ce problème grâce au développement d'un agent ne contenant pas d'acide silicique, dont le porteur ne contient pas de phosphate et est soluble ou dispersible dans l'eau et dans lequel la paraffine dure reste solide à température ambiante et est liquide à 100 % en poids à une température inférieure à 90 °C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4207552.1 | 1992-03-10 | ||
DE19924207552 DE4207552A1 (de) | 1992-03-10 | 1992-03-10 | Schaumregulierungsmittel auf paraffin-basis |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993017772A1 true WO1993017772A1 (fr) | 1993-09-16 |
Family
ID=6453666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1993/000462 WO1993017772A1 (fr) | 1992-03-10 | 1993-03-01 | Agent regulateur de moussage a base de paraffine |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE4207552A1 (fr) |
WO (1) | WO1993017772A1 (fr) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994012605A1 (fr) * | 1992-11-30 | 1994-06-09 | Henkel Kommanditgesellschaft Auf Aktien | Agent antimousse a base d'esters d'acides gras |
WO1996026258A1 (fr) * | 1995-02-20 | 1996-08-29 | Henkel Kommanditgesellschaft Auf Aktien | Procede de fabrication de produits de lavage a mousse reduite et densite apparente elevee |
WO1997034983A1 (fr) * | 1996-03-19 | 1997-09-25 | Henkel Kommanditgesellschaft Auf Aktien | Agent particulaire regulateur de mousse a base de paraffine |
WO1998009701A1 (fr) * | 1996-09-06 | 1998-03-12 | Henkel Kommanditgesellschaft Auf Aktien | Procede pour la fabrication de regulateurs de mousse contenant de la paraffine |
US6200498B1 (en) | 1997-08-29 | 2001-03-13 | Henkel Kommanditgesellschaft Auf Aktien | Process for producing paraffin-containing foam regulators |
CN107254365A (zh) * | 2017-07-10 | 2017-10-17 | 广州创达材料科技有限公司 | 一种喷淋水基清洗剂 |
EP2486967A4 (fr) * | 2009-10-09 | 2018-02-14 | San Nopco Limited | Agent antimousse |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0309931A2 (fr) * | 1987-09-30 | 1989-04-05 | Henkel Kommanditgesellschaft auf Aktien | Antimousse régulatrice apte à l'utilisation dans les lessives et les détergents |
-
1992
- 1992-03-10 DE DE19924207552 patent/DE4207552A1/de not_active Withdrawn
-
1993
- 1993-03-01 WO PCT/EP1993/000462 patent/WO1993017772A1/fr active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0309931A2 (fr) * | 1987-09-30 | 1989-04-05 | Henkel Kommanditgesellschaft auf Aktien | Antimousse régulatrice apte à l'utilisation dans les lessives et les détergents |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994012605A1 (fr) * | 1992-11-30 | 1994-06-09 | Henkel Kommanditgesellschaft Auf Aktien | Agent antimousse a base d'esters d'acides gras |
WO1996026258A1 (fr) * | 1995-02-20 | 1996-08-29 | Henkel Kommanditgesellschaft Auf Aktien | Procede de fabrication de produits de lavage a mousse reduite et densite apparente elevee |
WO1997034983A1 (fr) * | 1996-03-19 | 1997-09-25 | Henkel Kommanditgesellschaft Auf Aktien | Agent particulaire regulateur de mousse a base de paraffine |
WO1998009701A1 (fr) * | 1996-09-06 | 1998-03-12 | Henkel Kommanditgesellschaft Auf Aktien | Procede pour la fabrication de regulateurs de mousse contenant de la paraffine |
US6200498B1 (en) | 1997-08-29 | 2001-03-13 | Henkel Kommanditgesellschaft Auf Aktien | Process for producing paraffin-containing foam regulators |
EP2486967A4 (fr) * | 2009-10-09 | 2018-02-14 | San Nopco Limited | Agent antimousse |
CN107254365A (zh) * | 2017-07-10 | 2017-10-17 | 广州创达材料科技有限公司 | 一种喷淋水基清洗剂 |
Also Published As
Publication number | Publication date |
---|---|
DE4207552A1 (de) | 1993-09-16 |
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