EP1137751B1 - Aqueous foam control emulsion - Google Patents

Aqueous foam control emulsion Download PDF

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Publication number
EP1137751B1
EP1137751B1 EP99965429A EP99965429A EP1137751B1 EP 1137751 B1 EP1137751 B1 EP 1137751B1 EP 99965429 A EP99965429 A EP 99965429A EP 99965429 A EP99965429 A EP 99965429A EP 1137751 B1 EP1137751 B1 EP 1137751B1
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EP
European Patent Office
Prior art keywords
weight
foam control
emulsion according
aqueous
control emulsion
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
Application number
EP99965429A
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German (de)
French (fr)
Other versions
EP1137751A1 (en
Inventor
Thomas Otto Gassenmeier
Jürgen MILLHOFF
Maria Liphard
Rene-Andres Artiga Gonzalez
Stefan Hammelstein
Ingrid Kraus
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Henkel AG and Co KGaA
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Henkel AG and Co KGaA
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Publication of EP1137751A1 publication Critical patent/EP1137751A1/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/835Mixtures of non-ionic with cationic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38Cationic compounds
    • C11D1/52Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
    • C11D1/528Carboxylic 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
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38Cationic compounds
    • C11D1/65Mixtures of anionic with cationic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005Other compounding ingredients characterised by their effect
    • C11D3/0026Low foaming or foam regulating compositions
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/18Hydrocarbons
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3703Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/72Ethers of polyoxyalkylene glycols

Definitions

  • the invention relates to a foam control system based on paraffin and optionally silicone, which is in the form of an aqueous emulsion, its use for the preparation of particulate foam control agent and a method for the same Production.
  • European Patent EP 0 309 931 B1 describes suitable particulate foam control agents for use in detergents and cleaners comprising a water-soluble surfactant-free carrier material and a siloxane-free defoamer mixture of 5-60% by weight of soft and / or hard paraffin adsorbed thereon, 20-90% by weight of microcrystalline paraffin wax having a certain melting range and 5-20% by weight of a diamide derived from C 2-7 diamines and C 12-22 fatty acids in finely divided form.
  • the preparation of such particulate foam control agents is carried out by spray-drying an aqueous slurry containing the support material and the defoaming mixture.
  • the defoamer performance of the defoamer mixture is reported to be insufficient when sprayed onto a particulate detergent.
  • the subject of the German Offenlegungsschrift DE 23 38 468 is a detergent with a content of a silicone defoamer, which interacts with the Detergent components is protected.
  • aqueous Melting the silicone defoamer and a vehicle, for example Polyglycol initially spray-dried and the resulting particles in one fluidized bed of a solid, water-soluble coating material with a coating Mistake.
  • a coating material common salts used in detergents, in particular tripolyphosphate or carboxymethylcellulose may be used.
  • German Offenlegungsschrift DE 31 28 631 describes the production of Foam-dampened detergents containing silicone defoamers containing are microencapsulated.
  • the silicone is in an aqueous solution of a dispersed film-forming polymers and the dispersion - separated from the rest in Water dissolved or dispersed detergent ingredients - over a supplied special line the spray drying system.
  • the union of the two Partial flows take place in the area of the spray nozzle.
  • film-forming polymers come to Example cellulose ethers. Starch ethers or synthetic water-soluble polymers as well their mixtures in question.
  • the formation of the microcapsules takes place spontaneously in the spray nozzle or by previous precipitation by addition of electrolyte salts to the silicone dispersion.
  • the process described is necessarily spray-dried on the preparation Detergent bound. A transfer to otherwise, for example by Granulation produced detergents and cleaners or other Fields of application is not possible with this method of operation.
  • European Patent Application EP 097 867 describes a process for the preparation microencapsulated defoamer oils by mixing a silicone emulsion with a aqueous solution of carboxymethyl cellulose and precipitation of the microcapsules Addition of electrolytes, in particular polyvalent salts or organic Solvent. It presents considerable difficulties for a sufficient Foam damping required small amounts of silicone microcapsules in a comparatively large amount of washing powder to be distributed homogeneously.
  • German Offenlegungsschrift DE 34 36 194 describes a process for the preparation a free-flowing antifoam granulate by spray-drying an aqueous, film-forming polymers containing defoamer.
  • a Granules of composition 1 to 10 wt .-% water-insoluble Defoamer active ingredient, 0.2 to 2% by weight of a mixture of sodium carboxymethylcellulose and methylcellulose in a weight ratio of 80:20 to 40:60, 70 to 90% by weight.
  • inorganic, water-soluble or dispersible carrier salts balance water, is allowed to a 0.5 to 8 wt .-% of the cellulose ether mixture containing aqueous solution at a temperature of 15 to 60 ° C swell until the viscosity of the solution is at least 75% of the viscosity, with complete swelling of the cellulose ether solution is measured, whereupon in this solution the defoamer dispersed and after addition of the carrier salts and optionally water the homogenized dispersion spray-dried.
  • defoamer active ingredients Organopolysiloxanes, paraffins and mixtures of organopolysiloxanes and paraffins used.
  • the antifoam active ingredient content is 1 to 10% by weight, preferably 3 to 7% by weight.
  • the carrier salt is preferably a mixture of sodium silicate, Sodium tripolyphosphate and sodium sulfate.
  • European Patent EP 0 337 523 B1 discloses a process for the production powdered detergent containing at least 5 wt .-% anionic surfactant, 20-80 Wt .-% aluminosilicate and in water and anionic and nonionic surfactants contain substantially insoluble paraffin wax, which co-spraying or Subsequent spraying of the paraffin on the prefabricated detergent particles as essential process step.
  • the paraffin wax can also be in the form of a Mixture with nonionic surfactants are used.
  • the problem solved by the present invention was mainly a liquid formulation of a paraffin and Bisfettklamid and optionally To develop silicone oil-containing foam regulator system, the low viscosity and at Low temperatures is manageable and the lowest possible proportion of not Having foam regulator performance contributing ingredients.
  • both at the production and the storage as well as with the possible further processing of the liquid composition to particulate products only the lowest possible Decrease in defoamer performance occur.
  • the object of the invention with which this object is achieved is an aqueous foam regulator emulsion comprising 16% by weight to 70% by weight paraffin wax or paraffin wax and silicone oil based foam regulator, 2% to 15% by weight nonionic and or anionic emulsifier and not more than 80 wt .-% water.
  • a paraffin wax base is understood to mean a combination of paraffin wax and bis-fatty acid amide.
  • a foam regulator emulsion according to the invention preferably contains 15% by weight to 60% by weight, in particular 30% by weight to 50% by weight paraffin wax or a mixture of paraffin wax and silicone oil, 1% by weight to 10% by weight, in particular from 3% by weight to 8% by weight of bis-fatty acid amide derived from C 2-7 -diamines and C 12-22 -fatty acids, from 2% by weight to 15% by weight, in particular from 3% by weight to 10% Wt .-% of nonionic and / or anionic emulsifier and not more than 80 wt .-%, in particular not more than 60 wt .-% and particularly preferably 20 wt .-% to 50 wt .-% water.
  • the invention also relates to a process for the preparation of particulate foam regulator granules by spraying the said aqueous emulsion to a solid Support material, which optionally followed by a drying step, or by Spray-drying an aqueous slurry obtained by mixing the Foam regulator emulsion with solid support material and optionally water.
  • a paraffin wax-containing foam regulator emulsion according to the invention is preferably by melting the paraffin wax and the Bisfettklaamides in Presence of the emulsifier, optionally cooling the melt to at most 100 ° C and stirring in water. If mixtures of nonionic Emulsifier and anionic emulsifier are used, it is preferred that the nonionic emulsifier as described in the melt of paraffin wax and bis-fatty acid amide to incorporate and the anionic emulsifier not the melt, but prior to stirring the melt add to the water. If you have paraffin wax and Bisfettklamid in molten, not cooled form, it is preferred cold water with a temperature of at least room temperature use.
  • the melt is stirred in water at a temperature of is cooled to at most about 100 ° C, it is preferred to use water at a temperature of about 50 ° C to 80 ° C use.
  • Usual stirring devices are usually sufficient to achieve the even distribution of all components and thus to produce the aqueous emulsion according to the invention; the use of high-speed mixers or homogenizers (for example Ultra Turrax®) is usually not required. The additional incorporation of silicone oil is at any point this Possible.
  • the Silicone oil in comparison to the amount of Paraffin wax contain a higher amount it is preferably first mixed the Silicone oil with the nonionic and / or anionic emulsifier, stirring a portion of the amount of water so that a water-type emulsion in silicone creates, adds more water until it comes to an inversion of the emulsion, stirs vigorously and then with stirring the remaining water.
  • the means in the outer water phase can also be droplets of the original Kememulsion type water in silicone are.
  • the foam regulator emulsions obtainable according to the invention are stable and exhibit 60 ° C preferably viscosities below 2500 mPa.s, in particular in the range of 100 mPa.s to 500 mPa.s, measured for example with a Brookfield rotational viscometer, Spindle No. 2, 5 revolutions per minute, on.
  • paraffin waxes in question in accordance with the invention are generally complex mixtures without a sharp melting point.
  • their melting range is usually determined by differential thermal analysis (DTA) as described in "The Analyst” 87 (1962), 420, and / or their solidification point. This is the temperature at which the wax passes from the liquid to the solid state by slow cooling.
  • DTA differential thermal analysis
  • paraffins which are completely liquid at room temperature ie those having a solidification point below 25.degree. C.
  • solid paraffins which are solid at room temperature are useful.
  • the paraffin wax is solid at room temperature and is at 100 ° C in a completely liquid form.
  • paraffin wax mixtures known from European patent application EP 0 309 931 may be used, for example, from 26% by weight to 49% by weight of microcrystalline paraffin wax having a solidification point of from 62 ° C. to 90 ° C., from 20% by weight to 49% by weight % Hard paraffin with a solidification point of 42 ° C to 56 ° C and 2 wt .-% to 25 wt .-% soft paraffin with a solidification point of 35 ° C to 40 ° C.
  • paraffins or paraffin mixtures are used, which solidify in the range of 30 ° C to 90 ° C. It should be noted that even at room temperature appearing paraffin wax mixtures may contain different proportions of liquid paraffin.
  • the liquid fraction at 40 ° C. is as high as possible, without already being 100% at this temperature.
  • Preferred paraffin wax mixtures have at 40 ° C a liquid content of at least 50 wt .-%, in particular from 55 wt .-% to 80 wt .-%, and at 60 ° C, a liquid content of at least 90 wt .-% to the temperature at a liquid content of 100 wt .-% of the paraffin wax is reached, in particularly preferred Paraffinwachsgemischen still below 85 ° C, in particular at 75 ° C to 82 ° C. It should also be ensured that the paraffins contain as far as possible no volatile components.
  • Preferred paraffin waxes contain less than 1 wt .-%, in particular less than 0.5 wt .-% at 110 ° C and atmospheric pressure vaporizable fractions.
  • Paraffin waxes which can be used according to the invention can be obtained, for example, under the trade names Lunaflex® from Fuller and Deawax® from DEA Mineralöl AG.
  • Foam-regulating mixtures of paraffin wax with foam-regulating silicone oil can also be used instead of the paraffin wax.
  • the reference to silicone oil in the context of the present invention also always means its mixing with finely divided fillers, for example hydrophilic or hydrophobic silica, so-called highly dispersed silicic acid.
  • silicone oil for example polydimethylsiloxane, in mixtures of paraffin wax and silicone oil is preferably contained in such amounts that the foam regulator emulsion prepared therefrom has a content of silicone oil in the range from 0.1% to 10% by weight, in particular 1 wt .-% to 5 wt .-%.
  • the foam regulator emulsion contains a mixture of silicone oil and paraffin wax in a weight ratio of 2: 1 to 1: 100, in particular 1: 1 to 1:10.
  • a particularly preferred foam regulator emulsion contains 10% by weight to 40% by weight, in particular 15% by weight to 35% by weight of silicone oil and 50% by weight to 80% by weight of water.
  • paraffin wax-containing foam regulator emulsion is a second essential component of the Bisfettkladamiden defoaming system educated.
  • Suitable are bisamides, ranging from saturated fatty acids 12 to 22, preferably 14 to 18 carbon atoms and of alkylenediamines having 2 to 7 carbon atoms derived.
  • Suitable fatty acids are lauric, myristic, stearic, arachinic and behenic acid and mixtures thereof, such as natural fats or hardened 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-myristoylethylenediamine, Bis-palmitoyl-ethylenediamine, bis-stearoylethylenediamine and mixtures thereof and the corresponding derivatives of hexamethylenediamine.
  • nonionic emulsifiers which are used in emulsions according to the invention especially the alkoxylates, preferably the ethoxylates and / or propoxylates of alcohols, alkylamines, vicinal diols, carboxylic acids and / or carboxamides, the alkyl groups having 8 to 22 carbon atoms, preferably 12 to 18 C-atoms, own, understood.
  • the average degree of alkoxylation of these Compounds is usually from 1 to 10, preferably 2 to 5. You can prepared in known manner by reaction with the corresponding alkylene oxides become.
  • products obtained by alkoxylation of fatty acid alkyl esters having 1 to 4 carbon atoms in the ester part according to the method of the international patent application WO 90/13533 can be produced, come into question.
  • To the candidate alcohol alkoxylates include the ethoxylates and / or propoxylates of linear or branched chain Alcohols having 8 to 22 carbon atoms, preferably 12 to 18 carbon atoms. Suitable are especially the derivatives of fatty alcohols, although also their branched-chain isomers can be used for the preparation of useful alkoxylates.
  • the ethoxylates of primary alcohols with linear dodecyl, tetradecyl, Hexadecyl or Octadecylresten and mixtures thereof are usable Accordingly, in particular the ethoxylates of primary alcohols with linear dodecyl, tetradecyl, Hexadecyl or Octadecylresten and mixtures thereof.
  • Alkoxylates of mono- or polyunsaturated fatty alcohols to which for example, oleyl alcohol, elaidyl alcohol, linoleyl alcohol, linolenyl alcohol, Gadoleyl alcohol and eruca alcohol is possible.
  • esters respectively Partial esters of carboxylic acids of corresponding C chain length with polyols such as glycerol or oligoglycerol can be used.
  • Preferred anionic emulsifiers are Alkali metal salts of alkylbenzenesulfonic acids having 9 to 13 C atoms in the alkyl group, especially sodium dodecylbenzenesulfonate.
  • emulsifiers may be small amounts, optionally up to 4 wt .-%, anionic and / or nonionic cellulose ethers such as carboxymethyl cellulose and / or Hydroxyethylcellulose be included.
  • a homogeneous mixture of foam regulator system and in particular nonionic emulsifier can be beneficial in easier Melting by melting the solid at room temperature, the bisamide in the presence of Paraffins and the emulsifier, expediently with stirring or homogenizing, to reach. If the bisamide is not in substance, but prefabricated in Blending with the paraffin is a heating above the melting point In addition, the musk generally is not required, as it is already at lower temperatures usually forms a solution of the bisamide in paraffin.
  • the Water may have been previously added in particular an anionic emulsifier.
  • the concentration of anionic emulsifier in water is preferably 5 wt .-% to 15 wt .-%.
  • the foam regulator system obtainable in this way is storage-stable at room temperature and can as such, by simply adding to the other components of the agent in liquid detergents and cleaners are used.
  • the foam regulator emulsion according to the invention be used for foam regulation or venting particular aqueous liquid detergent in their Production and / or filling.
  • the entire particulate detergent or cleaner with the defoamer is to be applied, it is preferable to use 0.1% by weight to 5% by weight, in particular 0.25 wt .-% to 3 wt .-% of defoamer on the washing or Detergent particles on.
  • foam regulator granulate does not want to produce the foam regulator active ingredients on the entire Detergent, but on a part of it usually contained solid Components (which are referred to below as support materials) applies and this foam regulator granules then the remaining solid components of Washing or cleaning agent admixed, it is preferable to bring 3 wt .-% to 60 wt .-%, in particular 15 wt .-% to 45 wt .-% of defoamer on.
  • a drying step For example, using conventional fluidized bed dryer to be connected, or you bring the defoamer with simultaneous drying, for example also in a fluidized bed, on. If you use the packaging in particulate form with Aid for the spray-drying of an aqueous slurry containing the Defoamer emulsion and the solid detergent ingredients or Carrier materials contains, wants to perform, apply the above Quantity ranges accordingly.
  • the solid and / or solid-form detergent or cleaning composition ingredients to or on at least one of which the emulsion according to the invention is applied for the production of particulate products include conventional powders prepared by spray-drying aqueous slurries of their ingredients, solid bleaches, in solid form prepared bleach activators, anionic surfactant compounds not prepared by conventional spray drying according to international patent application WO 93/04162 containing more than 80% by weight, in particular more than 90% by weight of alkyl sulfate having alkyl chain lengths in the range of C 12 to C 18 , where Residual consisting essentially of inorganic salts and water, powdery polycarboxylate co-builders, for example, alkali metal citrate, solid inorganic builders, such as zeolite A, zeolite P and crystalline phyllosilicates, and other inorganic salts, such as alkali metal sulfate, Alkalicarbona t, alkali metal bicarbonate and alkali si
  • a used in a preferred variant of the method according to the invention Contains spray-drying product to be acted upon by the foam regulator emulsion preferably 25 wt .-% to 65 wt .-%, in particular 30 wt .-% to 60 wt .-% of inorganic Builder and 7.5 wt% to 40 wt%, especially 10 wt% to 30 wt% Anionic surfactant, in particular synthetic anionic surfactant of the sulphate and / or sulphonate type.
  • the remainder to 100 wt .-% consists of conventional ingredients spray-dried Washing or cleaning agents, in particular water, preferably in amounts up to to 20% by weight, in particular from 8% to 18% by weight, of organic cobuilder, the preferably in amounts of up to 8% by weight, in particular from 3% by weight to 6.5% by weight, Discoloration inhibitors, preferably used in the manufacture of detergents Spray-drying products in amounts of up to 5% by weight, in particular 1.5% by weight to 3 wt .-%, and inorganic water-soluble salts, for example Alkali sulfates and / or carbonates, preferably in amounts of up to 20 wt .-%, in particular from 2 wt .-% to 12 wt .-% are included.
  • solid oxygen-based bleaching agents for example alkali percarbonates or alkali metal perborates present as so-called monohydrates or tetrahydrates can, bleach activators in powder form, for example, after the Process of European Patent EP 0 037 026 produced tetraacetylethylenediamine granules, solid-form, high-active-substance anionic surfactant compounds, for example, one according to the method of international Patent application WO 93/04162 produced alkyl sulfate compound, in granular form present enzymes, for example one according to the method of the international patent application WO 92/11347 produced enzyme extrudate or by the method of German patent application DE 43 29 463 produced Mehrenzymgranulat and / or a in powder form, for example by the process of the German patent application DE 44 08 360, ready-made soil release active ingredient.
  • solid oxygen-based bleaching agents for example alkali percarbonates or alkali metal perborates present as so-called monohydrates or tetra
  • a build-up granulation in a granulation mixer in this way in that an amount of 50 to 100 parts by weight, in particular 60 to 85 parts by weight on inorganic carrier salt, preferably containing alkali metal sulfate, Alkali carbonate and / or alkali bicarbonate, optionally with an amount of up to 5 parts by weight, in particular 1 to 3 parts by weight of an anionic and / or nonionic cellulose ether intensively mixed, with further granulation a lot from 1 to 10 parts by weight, in particular from 2 to 8 parts by weight, of aqueous alkali metal silicate and / or polymer polycarboxylate solution is added, and then 10 parts by weight of the optionally heated to a temperature in the range of 70 ° C to 180 ° C Added foam regulator emulsion.
  • inorganic carrier salt preferably containing alkali metal sulfate, Alkali carbonate and / or alkali bicarbonate
  • an amount of up to 5 parts by weight in particular 1
  • aqueous emulsions E1, E2, E3 and E4 were prepared. The procedure was followed by melting the paraffin wax (or the mixture of paraffin wax and silicone oil) and the Bistearylklareethylendiamid together with the emulsifier I or II by heating to a temperature of about 150 ° C and in cold water ( E1 and E4 ) respectively an aqueous solution of the emulsifier III ( E2 and E3 ) was stirred.
  • composition of the foam regulator emulsions [% by weight] medium E1 E2 E3 E4 paraffin wax 44 44 40 41 silicone oil - - 4.5 3.5 Bistearylklareethylendiamid 6 6 6 6 Emulsifier I 5 5 5 - Emulsifier II - 4 - 7.5 Emulsifier III - 4 5.5 - water on 100
  • the foam regulator emulsions thus obtained were prepared on the basis of the method described in US Pat WO 98/09701 described method in amounts of 30 wt .-% to an inorganic particulate carrier material applied.
  • the foam regulator granules thus obtained were each in an amount of 1 wt .-% to a defoamer particulate detergent added, resulting in washing temperatures of 40 ° C, 60 ° C. and 90 ° C gave a defoamer performance that did not lag behind when used conventional type of defoamer granules produced backlog.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Oil, Petroleum & Natural Gas (AREA)
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Description

Die Erfindung betrifft ein Schaumregulatorsystem auf der Basis von Paraffin und gegebenenfalls Silikon, das in Form einer wäßrigen Emulsion vorliegt, seine Verwendung zur Herstellung teilchenförmiger Schaumregulierungsmittel sowie ein Verfahren zu deren Herstellung.The invention relates to a foam control system based on paraffin and optionally silicone, which is in the form of an aqueous emulsion, its use for the preparation of particulate foam control agent and a method for the same Production.

Die schaumregulierende Wirkung von Kombinationen aus Paraffinen mit Bisfettsäureamiden in wäßrigen tensidhaltigen Systemen ist bekannt. So beschreibt zum Beispiel die europäische Patentschrift EP 0 309 931 B1 zur Verwendung in Wasch- und Reinigungsmitteln geeignete teilchenförmige Schaumregulierungsmittel, die aus einem wasserlöslichen tensidfreien Trägermaterial und einem daran adsorbierten siloxanfreien Entschäumergemisch aus 5-60 Gew.-% Weich- und/oder Hartparaffin, 20-90 Gew.-% mikrokristallinem Paraffinwachs mit bestimmtem Schmelzbereich und 5-20 Gew.-% eines von C2-7-Diaminen und C12-22-Fettsäuren abgeleiteten Diamids in feinverteilter Form. Die Herstellung solcher teilchenförmiger Schaumregulierungsmittel erfolgt mittels Sprühtrocknung einer wäßrigen Aufschlämmung, welche das Trägermaterial und das Entschäumergemisch enthält. Die Entschäumerleistung des Entschäumergemisches wird als unzureichend angegeben, wenn man es auf ein teilchenförmiges Waschmittel aufsprüht.The foam-regulating effect of combinations of paraffins with Bisfettsäureamiden in aqueous surfactant-containing systems is known. For example, European Patent EP 0 309 931 B1 describes suitable particulate foam control agents for use in detergents and cleaners comprising a water-soluble surfactant-free carrier material and a siloxane-free defoamer mixture of 5-60% by weight of soft and / or hard paraffin adsorbed thereon, 20-90% by weight of microcrystalline paraffin wax having a certain melting range and 5-20% by weight of a diamide derived from C 2-7 diamines and C 12-22 fatty acids in finely divided form. The preparation of such particulate foam control agents is carried out by spray-drying an aqueous slurry containing the support material and the defoaming mixture. The defoamer performance of the defoamer mixture is reported to be insufficient when sprayed onto a particulate detergent.

Die Verwendung schaumregulierender homogener Gemische aus nichtionischem Tensid und einem Schaumregulatorsystem, das Paraffinwachs und Bisfettsäureamide enthält, zur Verbesserung der Herstellbarkeit und der Produkteigenschaften extrudierter Wasch- und Reinigungsmittel ist aus der internationalen Patentanmeldung WO 96/26258 bekannt.The use of foam-regulating homogeneous mixtures of nonionic surfactant and a foam control system containing paraffin wax and bis-fatty acid amides Improving the manufacturability and product properties of extruded washing and Detergent is known from international patent application WO 96/26258.

Aus der deutschen Offenlegungsschrift DE 32 42 202 sind schaumhemmende Mittel bekannt, die Verbindungen mit insgesamt zwei Gruppen -CO-O-, -CO-NH-, -O-CO-NHoder -NH-CO-NH- aufweisen und Paraffinwachs, hydrophobe Kieselsäure und als Lösungs- bzw. Dispergiermittel ein silikonfreies nicht wassermischbares Öl sowie gegebenenfalls Wasser und Emulgator enthalten. Durch den Gehalt an dem genannten Öl ist nur vergleichsweise wenig an Schaumregulierwirkstoff enthalten.From the German patent application DE 32 42 202 are foam-inhibiting agents known, the compounds having a total of two groups -CO-O-, -CO-NH-, -O-CO-NH or -NH-CO-NH- and paraffin wax, hydrophobic silica and as Solvent or dispersant a silicone-free water-immiscible oil and optionally contain water and emulsifier. By the content of said oil is only comparatively little contained in Schaumregulierwirkstoff.

Gegenstand der deutschen Offenlegungsschrift DE 23 38 468 ist ein Waschmittel mit einem Gehalt an einem Silikonentschäumer, der gegen Wechselwirkungen mit den Waschmittelbestandteilen geschützt ist. Zu seiner Herstellung werden wäßrige Schmelzen, die den Silikonentschäumer sowie eine Trägersubstanz, zum Beispiel Polyglykol, enthalten, zunächst sprühgetrocknet und die erhaltenen Partikel in einem fluidisierten Bett eines festen, wasserlöslichen Hüllmaterials mit einem Überzug versehen. Als Überzugsmaterial können übliche in Waschmitteln verwendete Salze, insbesondere Tripolyphosphat oder Carboxymethylcellulose verwendet werden. Ein solches mehrstufiges Herstellungsverfahren ist vergleichsweise technisch aufwendig.The subject of the German Offenlegungsschrift DE 23 38 468 is a detergent with a content of a silicone defoamer, which interacts with the Detergent components is protected. For its preparation are aqueous Melting the silicone defoamer and a vehicle, for example Polyglycol, initially spray-dried and the resulting particles in one fluidized bed of a solid, water-soluble coating material with a coating Mistake. As the coating material, common salts used in detergents, in particular tripolyphosphate or carboxymethylcellulose may be used. One Such a multi-stage production process is comparatively technically complicated.

Die deutsche Offenlegungsschrift DE 31 28 631 beschreibt die Herstellung von schaumgedämpften Waschmitteln mit einem Gehalt an Silikonentschäumern, die mikroverkapselt sind. Dabei wird das Silikon in einer wäßrigen Lösung eines filmbildenden Polymeren dispergiert und die Dispersion - getrennt von den übrigen in Wasser gelösten beziehungsweise dispergierten Waschmittelbestandteilen - über eine besondere Leitung der Sprühtrocknungsanlage zugeführt. Die Vereinigung der beiden Teilströme erfolgt im Bereich der Sprühdüse. Als filmbildende Polymere kommen zum Beispiel Celluloseether. Stärkeether oder synthetische wasserlösliche Polymere sowie deren Gemische in Frage. Die Bildung der Mikrokapseln erfolgt spontan in der Sprühdüse oder durch vorheriges Ausfällen durch Zugabe von Elektrolytsalzen zur Silikondispersion. Das beschriebene Verfahren ist zwangsläufig an die Herstellung sprühgetrockneter Waschmittel gebunden. Eine Übertragung auf anderweitig, zum Beispiel durch Granulierung hergestellte Wasch- und Reinigungsmittel oder auch auf andere Einsatzgebiete, ist bei dieser Arbeitsweise nicht möglich.German Offenlegungsschrift DE 31 28 631 describes the production of Foam-dampened detergents containing silicone defoamers containing are microencapsulated. The silicone is in an aqueous solution of a dispersed film-forming polymers and the dispersion - separated from the rest in Water dissolved or dispersed detergent ingredients - over a supplied special line the spray drying system. The union of the two Partial flows take place in the area of the spray nozzle. As film-forming polymers come to Example cellulose ethers. Starch ethers or synthetic water-soluble polymers as well their mixtures in question. The formation of the microcapsules takes place spontaneously in the spray nozzle or by previous precipitation by addition of electrolyte salts to the silicone dispersion. The process described is necessarily spray-dried on the preparation Detergent bound. A transfer to otherwise, for example by Granulation produced detergents and cleaners or other Fields of application is not possible with this method of operation.

Die europäische Patentanmeldung EP 097 867 beschreibt ein Verfahren zur Herstellung mikroverkapselter Entschäumeröle durch Mischen einer Silikonemulsion mit einer wäßrigen Lösung von Carboxymethylcellulose und Ausfällen der Mikrokapseln durch Zusatz von Elektrolyten, insbesondere mehrwertiger Salze oder organischer Lösungsmittel. Es bereitet erhebliche Schwierigkeiten, die für eine ausreichende Schaumdämpfung erforderlichen geringen Mengen an Silikon-Mikrokapseln in einer vergleichsweise großen Waschpulvermenge homogen zu verteilen. European Patent Application EP 097 867 describes a process for the preparation microencapsulated defoamer oils by mixing a silicone emulsion with a aqueous solution of carboxymethyl cellulose and precipitation of the microcapsules Addition of electrolytes, in particular polyvalent salts or organic Solvent. It presents considerable difficulties for a sufficient Foam damping required small amounts of silicone microcapsules in a comparatively large amount of washing powder to be distributed homogeneously.

Die deutsche Offenlegungsschrift DE 34 36 194 beschreibt ein Verfahren zur Herstellung eines schüttfähigen Entschäumergranulats durch Sprühtrocknen einer wäßrigen, filmbildende Polymere enthaltenden Entschäumerdispersion. Zwecks Herstellung eines Granulates der Zusammensetzung 1 bis 10 Gew.-% wasserunlöslicher Entschäumerwirkstoff, 0,2 bis 2 Gew.-% eines Gemisches aus Natriumcarboxymethylcellulose und Methylcellulose im Gewichtsverhältnis 80 : 20 bis 40 : 60, 70 bis 90 Gew.-% an anorganischen, in Wasser löslichen oder dispergierbaren Trägersalzen, Rest Wasser, läßt man eine 0,5 bis 8 Gew.-% des Celluloseethergemisches enthaltende wäßrige Lösung bei einer Temperatur von 15 bis 60 °C so lange quellen, bis die Viskosität der Lösung mindestens 75 % der Viskosität beträgt, die bei vollständiger Quellung der Celluloseether-Lösung gemessen wird, worauf man in dieser Lösung den Entschäumerwirkstoff dispergiert und nach Zusatz der Trägersalze und gegebenenfalls Wasser die homogenisierte Dispersion sprühtrocknet. Als Entschäumerwirkstoffe werden Organopolysiloxane, Paraffine sowie Gemische aus Organopolysiloxanen und Paraffinen eingesetzt. Der Entschäumerwirkstoffgehalt beträgt 1 bis 10 Gew.-%, vorzugsweise 3 bis 7 Gew.-%. Das Trägersalz besteht vorzugsweise aus einem Gemisch von Natriumsilikat, Natriumtripolyphosphat und Natriumsulfat.German Offenlegungsschrift DE 34 36 194 describes a process for the preparation a free-flowing antifoam granulate by spray-drying an aqueous, film-forming polymers containing defoamer. For the purpose of making a Granules of composition 1 to 10 wt .-% water-insoluble Defoamer active ingredient, 0.2 to 2% by weight of a mixture of sodium carboxymethylcellulose and methylcellulose in a weight ratio of 80:20 to 40:60, 70 to 90% by weight. inorganic, water-soluble or dispersible carrier salts, balance water, is allowed to a 0.5 to 8 wt .-% of the cellulose ether mixture containing aqueous solution at a temperature of 15 to 60 ° C swell until the viscosity of the solution is at least 75% of the viscosity, with complete swelling of the cellulose ether solution is measured, whereupon in this solution the defoamer dispersed and after addition of the carrier salts and optionally water the homogenized dispersion spray-dried. As defoamer active ingredients Organopolysiloxanes, paraffins and mixtures of organopolysiloxanes and paraffins used. The antifoam active ingredient content is 1 to 10% by weight, preferably 3 to 7% by weight. The carrier salt is preferably a mixture of sodium silicate, Sodium tripolyphosphate and sodium sulfate.

Aus der europäischen Patentschrift EP 0 337 523 B1 ist ein Verfahren zur Herstellung pulverförmiger Waschmittel bekannt, die mindestens 5 Gew.-% anionisches Tensid, 20-80 Gew.-% Alumosilikat und in Wasser sowie anionischen und nichtionischen Tensiden im wesentlichen unlösliches Paraffinwachs enthalten, welches das Mitversprühen oder nachträgliche Aufsprühen des Paraffins auf das vorgefertigte Waschmittelteilchen als wesentlichen Verfahrensschritt umfaßt. Das Paraffinwachs kann dabei auch in Form einer Mischung mit nichtionischen Tensiden eingesetzt werden.European Patent EP 0 337 523 B1 discloses a process for the production powdered detergent containing at least 5 wt .-% anionic surfactant, 20-80 Wt .-% aluminosilicate and in water and anionic and nonionic surfactants contain substantially insoluble paraffin wax, which co-spraying or Subsequent spraying of the paraffin on the prefabricated detergent particles as essential process step. The paraffin wax can also be in the form of a Mixture with nonionic surfactants are used.

Die in dem letztgenannten Dokument offenbarte Variante des Aufsprühens des Paraffins auf ein vorgefertigtes pulverförmiges Waschmittel läßt sich nur unter Schwierigkeiten anwenden. wenn man das Paraffinwachs nicht alleine, sondern in Kombination mit einem bekanntlich seine Schaumregulatorwirkung verstärkenden Bisfettsäureamid einsetzen will. Derartige Bisfettsäureamide sind in der Regel bei Raumtemperatur fest und weisen einen relativ hohen Schmelzpunkt auf, so daß man sie beziehungsweise ihre Kombination mit dem Paraffin nur bei erhöhter Temperatur von beispielsweise etwa 140 °C in flüssiger und versprühbarer Form handhaben kann. Bei Unterschreitung dieser Temperatur droht die Verstopfung der verwendeten Rohrleitungen und Düsen durch die Verfestigung des Bisfettsäureamids. Weiterhin nachteilig ist, daß es durch derartig hohe Temperaturen des Aufsprühmaterials zu unerwünschten Wechselwirkungen mit thermisch empfindlichen Bestandteilen des Waschmittels kommen kann. Zudem ist eine gleichmäßige Verteilung des Schaumregulatorsystems im Waschmittel gefährdet, wenn es als hocherhitztes Aufsprühmaterial nach dem Auftreffen auf das Waschmittelpulver rasch abkühlt.The variant of spraying the paraffin disclosed in the latter document on a prefabricated powdered detergent can be used only with difficulty. if you do not use the paraffin wax alone, but in combination with a it is known to use its foam regulator action enhancing bis-fatty acid amide want. Such Bisfettsäureamide are generally solid and have at room temperature a relatively high melting point so that they or their combination with the paraffin only at elevated temperature of for example about 140 ° C in liquid and sprayable form can handle. Falling below this temperature threatens the blockage of the used pipes and nozzles by the hardening of the Bisfettsäureamids. Another disadvantage is that it is due to such high temperatures of the Aufsprühmaterials to undesirable interactions with thermally sensitive Components of the detergent can come. In addition, a uniform distribution of the foam control system in the detergent when exposed as a highly heated spraying material Cools quickly after hitting the detergent powder.

Das mit der vorliegenden Erfindung gelöste Problem bestand hauptsächlich darin, eine flüssige Formulierung eines Paraffin und Bisfettsäureamid sowie gegebenenfalls Silikonöl enthaltenden Schaumregulatorsystems zu entwickeln, die niedrigviskos und bei niedrigen Temperaturen handhabbar ist und einen möglichst geringen Anteil an nicht zur Schaumregulatorleistung beitragenden Inhaltsstoffen aufweist. Außerdem darf sowohl bei der Herstellung und der Lagerung wie auch bei der eventuellen Weiterverarbeitung der flüssigen Zusammensetzung zu teilchenförmigen Produkten nur eine möglichst geringe Abnahme der Entschäumerleistung auftreten.The problem solved by the present invention was mainly a liquid formulation of a paraffin and Bisfettsäureamid and optionally To develop silicone oil-containing foam regulator system, the low viscosity and at Low temperatures is manageable and the lowest possible proportion of not Having foam regulator performance contributing ingredients. In addition, both at the production and the storage as well as with the possible further processing of the liquid composition to particulate products only the lowest possible Decrease in defoamer performance occur.

Gegenstand der Erfindung, mit der diese Aufgabe gelöst wird, ist eine wäßrige Schaumregulatoremulsion, die 16 Gew.-% bis 70 Gew.-% Schaumregulatorwirkstoff auf Paraffinwachsbasis oder Paraffinwachs- und Silikonölbasis, 2 Gew.-% bis 15 Gew.-% nichtionischen und/oder anionischen Emulgator sowie nicht mehr als 80 Gew.-% Wasser enthält. Unter einer Paraffinwachsbasis wird dabei eine Kombination aus Paraffinwachs und Bisfettsäureamid verstanden. Vorzugsweise enthält eine erfindungsgemäße Schaumregulatoremulsion 15 Gew.-% bis 60 Gew.-%, insbesondere 30 Gew.-% bis 50 Gew.-% Paraffinwachs oder einer Mischung aus Paraffinwachs und Silikonöl, 1 Gew.-% bis 10 Gew.-%, insbesondere 3 Gew.-% bis 8 Gew.-% sich von C2-7-Diaminen und C12-22-Fettsäuren ableitendem Bisfettsäureamid, 2 Gew.-% bis 15 Gew.-%, insbesondere 3 Gew.-% bis 10 Gew.-% nichtionischen und/oder anionischen Emulgator sowie nicht mehr als 80 Gew.-%, insbesondere nicht mehr als 60 Gew.-% und besonders bevorzugt 20 Gew.-% bis 50 Gew.-% Wasser.The object of the invention with which this object is achieved is an aqueous foam regulator emulsion comprising 16% by weight to 70% by weight paraffin wax or paraffin wax and silicone oil based foam regulator, 2% to 15% by weight nonionic and or anionic emulsifier and not more than 80 wt .-% water. A paraffin wax base is understood to mean a combination of paraffin wax and bis-fatty acid amide. A foam regulator emulsion according to the invention preferably contains 15% by weight to 60% by weight, in particular 30% by weight to 50% by weight paraffin wax or a mixture of paraffin wax and silicone oil, 1% by weight to 10% by weight, in particular from 3% by weight to 8% by weight of bis-fatty acid amide derived from C 2-7 -diamines and C 12-22 -fatty acids, from 2% by weight to 15% by weight, in particular from 3% by weight to 10% Wt .-% of nonionic and / or anionic emulsifier and not more than 80 wt .-%, in particular not more than 60 wt .-% and particularly preferably 20 wt .-% to 50 wt .-% water.

Weitere Gegenstände der Erfindung sind die Verwendung von derartigen Emulsionen zur Schaumregulierung wäßriger, zum Schäumen neigender Systeme, insbesondere von Wasch- und Reinigungsmittelflotten, und ihre Verwendung zur Herstellung teilchenförmiger Wasch- oder Reinigungsmittel durch Aufsprühen auf granulare Teilchen, die alle oder zumindest einige der bei Raumtemperatur festen Wasch- beziehungsweise Reinigungsmittelinhaltsstoffe enthalten.Further objects of the invention are the use of such emulsions for Foam regulation of aqueous foaming systems, in particular of Detergent and detergent liquors, and their use for manufacture particulate washing or cleaning agent by spraying onto granular particles, all or at least some of the solid at room temperature washing or Contain detergent ingredients.

Die Erfindung betrifft außerdem ein Verfahren zur Herstellung teilchenförmiger Schaumregulatorgranulate durch Aufsprühen der genannten wäßrigen Emulsion auf ein festes Trägermaterial, woran sich gegebenenfalls ein Trocknungsschritt anschließt, oder durch Sprühtrocknen einer wäßrigen Aufschlämmung, die erhalten wird durch Vermischen der Schaumregulatoremulsion mit festem Trägermaterial und gegebenenfalls Wasser.The invention also relates to a process for the preparation of particulate foam regulator granules by spraying the said aqueous emulsion to a solid Support material, which optionally followed by a drying step, or by Spray-drying an aqueous slurry obtained by mixing the Foam regulator emulsion with solid support material and optionally water.

Eine erfindungsgemäße Paraffinwachs enthaltende Schaumregulatoremulsion wird vorzugsweise durch Aufschmelzen des Paraffinwachses und des Bisfettsäureamides in Gegenwart des Emulgators, gegebenenfalls Abkühlen der Schmelze auf höchstens ca. 100 °C und Einrühren in Wasser hergestellt. Falls Mischungen aus nichtionischem Emulgator und anionischem Emulgator eingesetzt werden, ist es dabei bevorzugt, den nichtionischen Emulgator wie beschrieben in die Schmelze aus Paraffinwachs und Bisfettsäureamid einzuarbeiten und den anionischen Emulgator nicht der Schmelze, sondern vor dem Einrühren der Schmelze dem Wasser zuzusetzen. Wenn man Paraffinwachs und Bisfettsäureamid in geschmolzener, nicht abgekühlter Form einsetzt, ist es bevorzugt, kaltes Wasser mit einer höchstens Raumtemperatur entsprechenden Temperartur zu verwenden. Falls die Schmelze vor dem Einrühren in Wasser auf eine Temperatur von höchstens ca. 100 °C abgekühlt wird, ist es bevorzugt, Wasser mit einer Temperatur von ca. 50 °C bis 80 °C einzusetzen. Übliche Rührvorrichtungen sind normalerweise ausreichend, um die gleichmäßige Verteilung aller Komponenten zu erzielen und somit die erfindungsgemäße wäßrige Emulsion zu erzeugen; der Einsatz von Hochgeschwindigkeitsmischem oder Homogenisatoren (zum Beispiel Ultra Turrax®) ist in der Regel nicht erforderlich. Die zusätzliche Einarbeitung von Silikonöl ist an jeder Stelle dieses Verfahrens möglich. Falls Schaumregulatoremulsionen hergestellt werden sollen, die Silikonöl in im Vergleich zur Menge des Paraffinwachses höherer Menge enthalten, vermischt man vorzugsweise zuerst das Silikonöl mit dem nichtionischen und/oder anionischen Emulgator, gibt unter Rühren einen Teil der Wassermenge so zu, daß eine Emulsion vom Typ Wasser in Silikon entsteht, gibt so lange weiteres Wasser zu, bis es zu einer Inversion der Emulsion kommt, rührt intensiv und gibt anschließend unter Rühren das restliche Wasser zu. Die so erhältliche Emulsion kann gegebenenfalls teilweise multiplen Charakter aufweisen, das heißt in der äußeren Wasserphase können sich auch Tröpfchen der ursprünglichen Kememulsion vom Typ Wasser in Silikon befinden.A paraffin wax-containing foam regulator emulsion according to the invention is preferably by melting the paraffin wax and the Bisfettsäureamides in Presence of the emulsifier, optionally cooling the melt to at most 100 ° C and stirring in water. If mixtures of nonionic Emulsifier and anionic emulsifier are used, it is preferred that the nonionic emulsifier as described in the melt of paraffin wax and bis-fatty acid amide to incorporate and the anionic emulsifier not the melt, but prior to stirring the melt add to the water. If you have paraffin wax and Bisfettsäureamid in molten, not cooled form, it is preferred cold water with a temperature of at least room temperature use. If the melt is stirred in water at a temperature of is cooled to at most about 100 ° C, it is preferred to use water at a temperature of about 50 ° C to 80 ° C use. Usual stirring devices are usually sufficient to achieve the even distribution of all components and thus to produce the aqueous emulsion according to the invention; the use of high-speed mixers or homogenizers (for example Ultra Turrax®) is usually not required. The additional incorporation of silicone oil is at any point this Possible. If foam regulator emulsions are to be prepared, the Silicone oil in comparison to the amount of Paraffin wax contain a higher amount, it is preferably first mixed the Silicone oil with the nonionic and / or anionic emulsifier, stirring a portion of the amount of water so that a water-type emulsion in silicone creates, adds more water until it comes to an inversion of the emulsion, stirs vigorously and then with stirring the remaining water. The way optionally available emulsion may optionally have partially multiple character, the means in the outer water phase can also be droplets of the original Kememulsion type water in silicone are.

Die erfindungsgemäß erhältlichen Schaumregulatoremulsionen sind stabil und weisen bei 60 °C vorzugsweise Viskositäten unterhalb von 2500 mPa.s, insbesondere im Bereich von 100 mPa.s bis 500 mPa.s, gemessen beispielsweise mit einem Brookfield-Rotationsviskosimeter, Spindel Nr. 2, 5 Umdrehungen pro Minute, auf.The foam regulator emulsions obtainable according to the invention are stable and exhibit 60 ° C preferably viscosities below 2500 mPa.s, in particular in the range of 100 mPa.s to 500 mPa.s, measured for example with a Brookfield rotational viscometer, Spindle No. 2, 5 revolutions per minute, on.

Die erfindungsgemäß in Frage kommenden Paraffinwachse sind im allgemeinen komplexe Stoffgemische ohne scharfen Schmelzpunkt. Zur Charakterisierung bestimmt man üblicherweise ihren Schmelzbereich durch Differential-Thermo-Analyse (DTA), wie in "The Analyst" 87 (1962), 420, beschrieben, und/oder ihren Erstarrungspunkt. Darunter versteht man die Temperatur, bei der das Wachs durch langsames Abkühlen aus dem flüssigen in den festen Zustand übergeht. Erfindungsgemäß sind sowohl bei Raumtemperatur vollständig flüssige Paraffine, das heißt solche mit einem Erstarrungspunkt unter 25 °C, als auch bei Raumtemperatur feste Paraffine brauchbar. Vorzugsweise ist das Paraffinwachs bei Raumtemperatur fest und liegt bei 100 °C in vollständig flüssiger Form vor. Eingesetzt werden können beispielsweise die aus der europäischen Patentanmeldung EP 0 309 931 bekannten Paraffinwachsgemische aus beispielsweise 26 Gew.-% bis 49 Gew.-% mikrokristallinem Paraffinwachs mit einem Erstarrungspunkt von 62 °C bis 90 °C, 20 Gew.-% bis 49 Gew.-% Hartparaffin mit einem Erstarrungspunkt von 42 °C bis 56 °C und 2 Gew.-% bis 25 Gew.-% Weichparaffin mit einem Erstarrungspunkt von 35 °C bis 40 °C. Vorzugsweise werden Paraffine beziehungsweise Paraffingemische verwendet, die im Bereich von 30 °C bis 90 °C erstarren. Dabei ist zu beachten, daß auch bei Raumtemperatur fest erscheinende Paraffinwachsgemische unterschiedliche Anteile an flüssigem Paraffin enthalten können. Bei den erfindungsgemäß brauchbaren Paraffinwachsen liegt der Flüssiganteil bei 40 °C möglichst hoch, ohne bei dieser Temperatur schon 100 % zu betragen. Bevorzugte Paraffinwachsgemische weisen bei 40 °C einen Flüssiganteil von mindestens 50 Gew.-%, insbesondere von 55 Gew.-% bis 80 Gew.-%, und bei 60 °C einen Flüssiganteil von mindestens 90 Gew.-% auf Die Temperatur, bei der ein Flüssiganteil von 100 Gew.-% des Paraffinwachses erreicht wird, liegt bei besonders bevorzugten Paraffinwachsgemischen noch unter 85 °C, insbesondere bei 75 °C bis 82 °C. Außerdem ist darauf zu achten, daß die Paraffine möglichst keine flüchtigen Anteile enthalten. Bevorzugte Paraffinwachse enthalten weniger als 1 Gew.-%, insbesondere weniger als 0,5 Gew.-% bei 110 °C und Normaldruck verdampfbare Anteile. Erfindungsgemäß brauchbare Paraffinwachse können beispielsweise unter den Handelsbezeichnungen Lunaflex® der Firma Fuller sowie Deawax® der DEA Mineralöl AG bezogen werden. Anstelle des Paraffinwachses können auch schaumregulierende Gemische aus Paraffinwachs mit schaumregulierendem Silikonöl eingesetzt werden. Die Bezugnahme auf Silikonöl bedeutet im Rahmen der vorliegenden Erfindung immer auch dessen Abmischung mit feinteiligen Füllstoffen, beispielsweise hydrophilem oder hydrophobem Siliciumdioxid, sogenannter hochdisperser Kieselsäure. Dabei ist pyrogenes oder gefälltes, insbesondere hydrophobiertes Siliciumdioxid mit einer Oberfläche von mindestens 50 m2/g besonders bevorzugt, wie es beispielsweise under den Bezeichnungen Aerosil® oder Sipernat® im Handel erhältlich ist. In einer Ausführungsform der Erfindung ist Silikonöl, beispielsweise Polydimethylsiloxan, in Mischungen aus Paraffinwachs und Silikonöl vorzugsweise in solchen Mengen enthalten, daß die daraus hergestellte Schaumregulatoremulsion einen Gehalt an Silikonöl im Bereich von 0,1 Gew.-% bis 10 Gew.-%, insbesondere 1 Gew.-% bis 5 Gew.-% aufweist. In einer weiteren bevorzugten Ausgestaltung der Erfindung enthält die Schaumregulatoremulsion eine Mischung aus Silikonöl und Paraffinwachs im Gewichtsverhältnis 2:1 bis 1:100, insbesondere 1:1 bis 1:10. Eine besonders bevorzugte Schaumregulatoremulsion enthält 10 Gew.-% bis 40 Gew.-%, insbesondere 15 Gew.-% bis 35 Gew.-% Silikonöl und 50 Gew.-% bis 80 Gew.-% Wasser.The paraffin waxes in question in accordance with the invention are generally complex mixtures without a sharp melting point. For characterization, their melting range is usually determined by differential thermal analysis (DTA) as described in "The Analyst" 87 (1962), 420, and / or their solidification point. This is the temperature at which the wax passes from the liquid to the solid state by slow cooling. According to the invention, paraffins which are completely liquid at room temperature, ie those having a solidification point below 25.degree. C., and solid paraffins which are solid at room temperature are useful. Preferably, the paraffin wax is solid at room temperature and is at 100 ° C in a completely liquid form. For example, the paraffin wax mixtures known from European patent application EP 0 309 931 may be used, for example, from 26% by weight to 49% by weight of microcrystalline paraffin wax having a solidification point of from 62 ° C. to 90 ° C., from 20% by weight to 49% by weight % Hard paraffin with a solidification point of 42 ° C to 56 ° C and 2 wt .-% to 25 wt .-% soft paraffin with a solidification point of 35 ° C to 40 ° C. Preferably, paraffins or paraffin mixtures are used, which solidify in the range of 30 ° C to 90 ° C. It should be noted that even at room temperature appearing paraffin wax mixtures may contain different proportions of liquid paraffin. In the case of the paraffin waxes which can be used according to the invention, the liquid fraction at 40 ° C. is as high as possible, without already being 100% at this temperature. Preferred paraffin wax mixtures have at 40 ° C a liquid content of at least 50 wt .-%, in particular from 55 wt .-% to 80 wt .-%, and at 60 ° C, a liquid content of at least 90 wt .-% to the temperature at a liquid content of 100 wt .-% of the paraffin wax is reached, in particularly preferred Paraffinwachsgemischen still below 85 ° C, in particular at 75 ° C to 82 ° C. It should also be ensured that the paraffins contain as far as possible no volatile components. Preferred paraffin waxes contain less than 1 wt .-%, in particular less than 0.5 wt .-% at 110 ° C and atmospheric pressure vaporizable fractions. Paraffin waxes which can be used according to the invention can be obtained, for example, under the trade names Lunaflex® from Fuller and Deawax® from DEA Mineralöl AG. Foam-regulating mixtures of paraffin wax with foam-regulating silicone oil can also be used instead of the paraffin wax. The reference to silicone oil in the context of the present invention also always means its mixing with finely divided fillers, for example hydrophilic or hydrophobic silica, so-called highly dispersed silicic acid. Here, pyrogenic or precipitated, in particular hydrophobicized silica having a surface area of at least 50 m 2 / g is particularly preferred, as is commercially available, for example, under the names Aerosil® or Sipernat®. In one embodiment of the invention, silicone oil, for example polydimethylsiloxane, in mixtures of paraffin wax and silicone oil is preferably contained in such amounts that the foam regulator emulsion prepared therefrom has a content of silicone oil in the range from 0.1% to 10% by weight, in particular 1 wt .-% to 5 wt .-%. In a further preferred embodiment of the invention, the foam regulator emulsion contains a mixture of silicone oil and paraffin wax in a weight ratio of 2: 1 to 1: 100, in particular 1: 1 to 1:10. A particularly preferred foam regulator emulsion contains 10% by weight to 40% by weight, in particular 15% by weight to 35% by weight of silicone oil and 50% by weight to 80% by weight of water.

In der erfindungsgemäßen Paraffinwachs enthaltenden Schaumregulatoremulsion wird eine zweite wesentliche Komponente des Entschäumersystems aus Bisfettsäureamiden gebildet. Geeignet sind Bisamide, die sich von gesättigten Fettsäuren mit 12 bis 22, vorzugsweise 14 bis 18 C-Atomen sowie von Alkylendiaminen mit 2 bis 7 C-Atomen ableiten. Geeignete Fettsäuren sind Laurin-, Myristin-, Stearin-, Arachin- und Behensäure sowie deren Gemische, wie sie aus natürlichen Fetten beziehungsweise gehärteten Ölen, wie Talg oder hydriertem Palmöl, erhältlich sind. Geeignete Diamine sind beispielsweise Ethylendiamin 1,3-Propylendiamin, Tetramethylendiamin, Pentamethylendiamin, Hexamethylendiamin, p-Phenylendiamin und Toluylendiamin. Bevorzugte Diamine sind Ethylendiamin und Hexamethylendiamin. Besonders bevorzugte Bisamide sind Bis-myristoylethylendiamin, Bis-palmitoyl-ethylendiamin, Bis-stearoylethylendiamin und deren Gemische sowie die entsprechenden Derivate des Hexamethylendiamins.In the paraffin wax-containing foam regulator emulsion according to the invention is a second essential component of the Bisfettsäureamiden defoaming system educated. Suitable are bisamides, ranging from saturated fatty acids 12 to 22, preferably 14 to 18 carbon atoms and of alkylenediamines having 2 to 7 carbon atoms derived. Suitable fatty acids are lauric, myristic, stearic, arachinic and behenic acid and mixtures thereof, such as natural fats or hardened 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-myristoylethylenediamine, Bis-palmitoyl-ethylenediamine, bis-stearoylethylenediamine and mixtures thereof and the corresponding derivatives of hexamethylenediamine.

Unter nichtionischen Emulgatoren, die in erfindungsgemäßen Emulsionen zum Einsatz kommen können, werden insbesondere die Alkoxylate, vorzugsweise die Ethoxylate und/oder Propoxylate von Alkoholen, Alkylaminen, vicinalen Diolen, Carbonsäuren und/oder Carbonsäureamiden, die Alkylgruppen mit 8 bis 22 C-Atomen, vorzugsweise 12 bis 18 C-Atomen, besitzen, verstanden. Der mittlere Alkoxylierungsgrad dieser Verbindungen beträgt dabei in der Regel von 1 bis 10, vorzugsweise 2 bis 5. Sie können in bekannter Weise durch Umsetzung mit den entsprechenden Alkylenoxiden hergestellt werden. Auch Produkte, die durch Alkoxylierung von Fettsäurealkylestern mit 1 bis 4 C-Atomen im Esterteil nach dem Verfahren der internationalen Patentanmeldung WO 90/13533 herstellbar sind, kommen in Frage. Zu den in Frage kommenden Alkoholalkoxylaten gehören die Ethoxylate und/oder Propoxylate von linearen oder verzweigtkettigen Alkoholen mit 8 bis 22 C-Atomen, vorzugsweise 12 bis 18 C-Atomen. Geeignet sind insbesondere die Derivate der Fettalkohole, obwohl auch deren verzweigtkettige Isomere zur Herstellung verwendbarer Alkoxylate eingesetzt werden können. Brauchbar sind demgemäß insbesondere die Ethoxylate primärer Alkohole mit linearen Dodecyl-, Tetradecyl-, Hexadecyl- oder Octadecylresten sowie deren Gemische. Auch der Einsatz entsprechender Alkoxylate von ein- oder mehrfach ungesättigten Fettalkoholen, zu denen beispielsweise Oleylalkohol, Elaidylalkohol, Linoleylalkohol, Linolenylalkohol, Gadoleylalkohol und Erucaalkohol gehört, ist möglich. Auch Ester beziehungsweise Partialester von Carbonsäuren entsprechender C-Kettenlänge mit Polyolen wie Glycerin oder Oligoglycerin können eingesetzt werden. Bevorzugte anionische Emulgatoren sind Alkalisalze der Alkylbenzolsulfonsäuren mit 9 bis 13 C-Atomen in der Alkylgruppe, insbesondere Natriumdodecylbenzolsulfonat. Zusätzlich zu derartigen Emulgatoren können geringe Mengen, gegebenenfalls bis zu 4 Gew.-%, anionischer und/oder nichtionischer Celluloseether wie Carboxymethylcellulose und/oder Hydroxyethylcellulose, enthalten sein.Among nonionic emulsifiers which are used in emulsions according to the invention especially the alkoxylates, preferably the ethoxylates and / or propoxylates of alcohols, alkylamines, vicinal diols, carboxylic acids and / or carboxamides, the alkyl groups having 8 to 22 carbon atoms, preferably 12 to 18 C-atoms, own, understood. The average degree of alkoxylation of these Compounds is usually from 1 to 10, preferably 2 to 5. You can prepared in known manner by reaction with the corresponding alkylene oxides become. Also, products obtained by alkoxylation of fatty acid alkyl esters having 1 to 4 carbon atoms in the ester part according to the method of the international patent application WO 90/13533 can be produced, come into question. To the candidate alcohol alkoxylates include the ethoxylates and / or propoxylates of linear or branched chain Alcohols having 8 to 22 carbon atoms, preferably 12 to 18 carbon atoms. Suitable are especially the derivatives of fatty alcohols, although also their branched-chain isomers can be used for the preparation of useful alkoxylates. Are usable Accordingly, in particular the ethoxylates of primary alcohols with linear dodecyl, tetradecyl, Hexadecyl or Octadecylresten and mixtures thereof. Also, the use of appropriate Alkoxylates of mono- or polyunsaturated fatty alcohols, to which for example, oleyl alcohol, elaidyl alcohol, linoleyl alcohol, linolenyl alcohol, Gadoleyl alcohol and eruca alcohol is possible. Also esters respectively Partial esters of carboxylic acids of corresponding C chain length with polyols such as glycerol or oligoglycerol can be used. Preferred anionic emulsifiers are Alkali metal salts of alkylbenzenesulfonic acids having 9 to 13 C atoms in the alkyl group, especially sodium dodecylbenzenesulfonate. In addition to such emulsifiers may be small amounts, optionally up to 4 wt .-%, anionic and / or nonionic cellulose ethers such as carboxymethyl cellulose and / or Hydroxyethylcellulose be included.

Wesentlich ist, daß man eine homogene Mischung aus Schaumregulatorsystem und insbesondere nichtionischem Emulgator einsetzt. Diese kann man vorteilhaft in einfacher Weise durch Aufschmelzen des bei Raumtemperatur festen Bisamids in Gegenwart des Paraffins und des Emulgators, zweckmäßigerweise unter Rühren beziehungsweise Homogenisieren, erreichen. Falls das Bisamid nicht in Substanz, sondern vorkonfektioniert in Abmischung mit dem Paraffin eingesetzt wird, ist ein Erhitzen über den Schmelzpunkt des Bisamids hinaus in der Regel nicht erforderlich, da sich bereits bei niedrigeren Temperaturen in der Regel eine Lösung des Bisamids im Paraffin bildet. Anschließend an die vorzugsweise bei Temperaturen im Bereich von 60 °C bis 150 °C, insbesondere 80 °C bis 150 °C vorgenommene Bildung des Gemisches aus Entschäumersystem und Emulgator wird dieses, gegebenenfalls nach Abkühlen, mit dem Wasser vermischt, wobei dem Wasser zuvor ein insbesondere anionischer Emulgator zugesetzt worden sein kann. In diesem Fall beträgt die Konzentration an anionischem Emulgator in Wasser vorzugsweise 5 Gew.-% bis 15 Gew.-%.It is essential that a homogeneous mixture of foam regulator system and in particular nonionic emulsifier. These can be beneficial in easier Melting by melting the solid at room temperature, the bisamide in the presence of Paraffins and the emulsifier, expediently with stirring or homogenizing, to reach. If the bisamide is not in substance, but prefabricated in Blending with the paraffin is a heating above the melting point In addition, the musk generally is not required, as it is already at lower temperatures usually forms a solution of the bisamide in paraffin. Subsequently to the preferably at temperatures in the range of 60 ° C to 150 ° C, especially 80 ° C to 150 ° C made formation of the mixture of defoamer and emulsifier this is, optionally after cooling, mixed with the water, the Water may have been previously added in particular an anionic emulsifier. In In this case, the concentration of anionic emulsifier in water is preferably 5 wt .-% to 15 wt .-%.

Das so erhältliche Schaumregulatorsystem ist bei Raumtemperatur lagerstabil und kann als solches durch einfaches Zumischen zu den übrigen Komponenten des Mittels in flüssigen Wasch- und Reinigungsmitteln eingesetzt werden. Auch zur Schaumregulierung beziehungsweise Entlüftung insbesondere wäßriger Flüssigwaschmittel bei deren Herstellung und/oder Abfüllung kann die erfindungsgemäße Schaumregulatoremulsion verwendet werden. Bevorzugt ist allerdings, die gut fließfähige Emulsion auf einen festen und/oder in fester Form konfektionierten Wasch- oder Reinigungsmittelbestandteil, beispielsweise auf anorganische Builderpartikel, aufzubringen, wodurch die Einarbeitung der Schaumregulatorwirkstoffe in teilchenformige Wasch- und Reinigungsmittel in einfacher Weise ermöglicht wird.The foam regulator system obtainable in this way is storage-stable at room temperature and can as such, by simply adding to the other components of the agent in liquid detergents and cleaners are used. Also for foam regulation or venting particular aqueous liquid detergent in their Production and / or filling, the foam regulator emulsion according to the invention be used. However, it is preferred that the readily flowable emulsion to a solid and / or in a solid form ready-made detergent or cleaner component, for example, on inorganic builder particles, whereby the incorporation the foam regulator active ingredients in particulate detergents and cleaning agents in is made possible in a simple manner.

Falls das gesamte teilchenförmige Wasch- oder Reinigungsmittel mit der Entschäumeremulsion beaufschlagt werden soll, bringt man vorzugsweise 0,1 Gew.-% bis 5 Gew.-%, insbesondere 0,25 Gew.-% bis 3 Gew.-% an Entschäumeremulsion auf die Wasch- beziehungsweise Reinigungsmittelteilchen auf. Falls man ein sogenanntes Schaumregulatorgranulat herstellen will, das heißt die Schaumregulatorwirkstoffe nicht auf das gesamte Waschmittel, sondern auf einen Teil der darin üblicherweise enthaltenen festen Komponenten (die im folgenden als Trägermaterialien bezeichent werden) aufbringt und dieses Schaumregulatorgranulat anschließend den übrigen festen Komponenten des Wasch- oder Reinigungsmittels zumischt, bringt man vorzugsweise 3 Gew.-% bis 60 Gew.-%, insbesondere 15 Gew.-% bis 45 Gew.-% an Entschäumeremulsion auf. Nach dem Aufsprühen der wäßrigen Entschäumeremulsion kann ein Trocknungsschritt, beispielweise unter Verwendung üblicher Wirbelschichttrockner, angeschlossen werden, oder man bringt die Entschäumeremulsion unter gleichzeitiger Trocknung, zum Beispiel ebenfalls in einer Wirbelschicht, auf. Falls man die Konfektionierung in Teilchenform mit Hilfe der Sprühtrocknung einer wäßrigen Aufschlämmung, welche die Entschäumeremulsion und die festen Waschmittelinhaltsstoffe beziehungsweise Trägermaterialien enthält, durchführen will, gelten die voranstehend angebenen Mengenbereiche entsprechend.If the entire particulate detergent or cleaner with the defoamer is to be applied, it is preferable to use 0.1% by weight to 5% by weight, in particular 0.25 wt .-% to 3 wt .-% of defoamer on the washing or Detergent particles on. If you are a so-called foam regulator granulate does not want to produce the foam regulator active ingredients on the entire Detergent, but on a part of it usually contained solid Components (which are referred to below as support materials) applies and this foam regulator granules then the remaining solid components of Washing or cleaning agent admixed, it is preferable to bring 3 wt .-% to 60 wt .-%, in particular 15 wt .-% to 45 wt .-% of defoamer on. To the spraying of the aqueous antifoam emulsion can be followed by a drying step, For example, using conventional fluidized bed dryer to be connected, or you bring the defoamer with simultaneous drying, for example also in a fluidized bed, on. If you use the packaging in particulate form with Aid for the spray-drying of an aqueous slurry containing the Defoamer emulsion and the solid detergent ingredients or Carrier materials contains, wants to perform, apply the above Quantity ranges accordingly.

Zu den festen und/oder in fester Form konfektionierten Wasch- oder Reinigungsmittelbestandteilen, auf die beziehungsweise auf mindestens eines aus denen die erfindungsgemäße Emulsion zur Herstellung teilchenförmiger Produkte aufgebracht wird, gehören übliche durch Sprühtrocknung wäßriger Aufschlämmungen ihrer Inhaltsstoffe hergestellte Pulver, feste Bleichmittel, in fester Form konfektionierte Bleichaktivatoren, nicht durch konventionelles Sprühtrocknen hergestellte Aniontensidcompounds gemäß der internationalen Patentanmeldung WO 93/04162 mit einem Gehalt von über 80 Gew.-%, insbesondere über 90 Gew.-% an Alkylsulfat mit Alkylkettenlängen im Bereich von C12 bis C18, wobei der Rest im wesentlichen aus anorganischen Salzen und Wasser besteht, pulverförmige Polycarboxylat-Cobuilder, beispielsweise Alkalicitrat, feste anorganische Buildermaterialien, wie Zeolith-A, Zeolith-P und kristalline Schichtsilikate, und sonstige anorganische Salze wie Alkalisulfat, Alkalicarbonat, Alkalihydrogencarbonat und Alkalisilikat sowie deren Mischungen. Vorzugsweise weist das Trägermaterial eine Kombination aus Alkalihydrogencarbonat und Alkalicarbonat auf, wobei deren Gewichtsverhältnis vorzugsweise 99:1 bis 10:90, insbesondere 95:5 bis 50:50, beträgt. Bevorzugtes Alkalimetall ist dabei Natrium.The solid and / or solid-form detergent or cleaning composition ingredients to or on at least one of which the emulsion according to the invention is applied for the production of particulate products include conventional powders prepared by spray-drying aqueous slurries of their ingredients, solid bleaches, in solid form prepared bleach activators, anionic surfactant compounds not prepared by conventional spray drying according to international patent application WO 93/04162 containing more than 80% by weight, in particular more than 90% by weight of alkyl sulfate having alkyl chain lengths in the range of C 12 to C 18 , where Residual consisting essentially of inorganic salts and water, powdery polycarboxylate co-builders, for example, alkali metal citrate, solid inorganic builders, such as zeolite A, zeolite P and crystalline phyllosilicates, and other inorganic salts, such as alkali metal sulfate, Alkalicarbona t, alkali metal bicarbonate and alkali silicate and mixtures thereof. Preferably, the carrier material comprises a combination of alkali metal bicarbonate and alkali carbonate, the weight ratio of which is preferably 99: 1 to 10:90, in particular 95: 5 to 50:50. The preferred alkali metal is sodium.

Ein in einer bevorzugten Variante des erfindungsgemäßen Verfahrens eingesetztes und mit der Schaumregulatoremulsion zu beaufschlagendes Sprühtrocknungsprodukt enthält vorzugsweise 25 Gew.-% bis 65 Gew.-%, insbesondere 30 Gew.-% bis 60 Gew.-% anorganischen Builder und 7,5 Gew.-% bis 40 Gew.-%, insbesondere 10 Gew.-% bis 30 Gew.-% Aniontensid, insbesondere synthetisches Aniontensid vom Sulfat- und/oder Sulfonattyp. Der Rest auf 100 Gew.-% besteht aus üblichen Inhaltsstoffen sprühgetrockneter Wasch- oder Reinigungsmittel, insbesondere Wasser, das vorzugsweise in Mengen bis zu 20 Gew.-%, insbesondere von 8 Gew.-% bis 18 Gew.-%, organischem Cobuilder, der vorzugsweise in Mengen bis zu 8 Gew.-%, insbesondere von 3 Gew.-% bis 6,5 Gew.-%, Verfärbungsinhibitoren, die vorzugsweise in für die Herstellung von Waschmitteln vorgesehenen Sprühtrocknungsprodukten in Mengen bis zu 5 Gew.-%, insbesondere 1,5 Gew.-% bis 3 Gew.-%, und anorganischen wasserlöslichen Salzen, beispielsweise Alkalisulfaten und/oder -carbonaten, die vorzugsweise in Mengen bis zu 20 Gew.-%, insbesondere von 2 Gew.-% bis 12 Gew.-% enthalten sind.A used in a preferred variant of the method according to the invention and Contains spray-drying product to be acted upon by the foam regulator emulsion preferably 25 wt .-% to 65 wt .-%, in particular 30 wt .-% to 60 wt .-% of inorganic Builder and 7.5 wt% to 40 wt%, especially 10 wt% to 30 wt% Anionic surfactant, in particular synthetic anionic surfactant of the sulphate and / or sulphonate type. The remainder to 100 wt .-% consists of conventional ingredients spray-dried Washing or cleaning agents, in particular water, preferably in amounts up to to 20% by weight, in particular from 8% to 18% by weight, of organic cobuilder, the preferably in amounts of up to 8% by weight, in particular from 3% by weight to 6.5% by weight, Discoloration inhibitors, preferably used in the manufacture of detergents Spray-drying products in amounts of up to 5% by weight, in particular 1.5% by weight to 3 wt .-%, and inorganic water-soluble salts, for example Alkali sulfates and / or carbonates, preferably in amounts of up to 20 wt .-%, in particular from 2 wt .-% to 12 wt .-% are included.

Zu den weiteren Waschmittelinhaltsstoffen, die als Trägermaterial bei der teilchenförmigen Konfektionierung der Schaumregulatoremulsion eingesetzt werden können, gehören feste Bleichmittel auf Sauerstoffbasis, beispielsweise Alkalipercarbonate oder Alkaliperborate, die als sogenannte Monohydrate oder Tetrahydrate vorliegen können, pulverförmig konfektionierte Bleichaktivatoren, beispielsweise ein nach dem Verfahren des europäischen Patentes EP 0 037 026 hergestelltes Tetraacetylethylendiamin-Granulat, in fester Form konfektionierte, hoch-aktivsubstanzhaltige Aniontensidcompounds, beispielsweise ein nach dem Verfahren der internationalen Patentanmeldung WO 93/04162 hergestelltes Alkylsulfatcompound, in granularer Form vorliegende Enzyme, beispielsweise ein nach dem Verfahren der internationalen Patentanmeldung WO 92/11347 hergestelltes Enzymextrudat oder ein nach dem Verfahren der deutschen Patentanmeldung DE 43 29 463 hergestelltes Mehrenzymgranulat und/oder ein pulverförmig, beispielsweise nach dem Verfahren der deutschen Patentanmeldung DE 44 08 360, konfektionierter Soil release-Wirkstoff.To the other detergent ingredients used as a carrier material in the particulate confection of the foam regulator emulsion can be used may include solid oxygen-based bleaching agents, for example alkali percarbonates or alkali metal perborates present as so-called monohydrates or tetrahydrates can, bleach activators in powder form, for example, after the Process of European Patent EP 0 037 026 produced tetraacetylethylenediamine granules, solid-form, high-active-substance anionic surfactant compounds, for example, one according to the method of international Patent application WO 93/04162 produced alkyl sulfate compound, in granular form present enzymes, for example one according to the method of the international patent application WO 92/11347 produced enzyme extrudate or by the method of German patent application DE 43 29 463 produced Mehrenzymgranulat and / or a in powder form, for example by the process of the German patent application DE 44 08 360, ready-made soil release active ingredient.

In einer bevorzugten Variante des Verfahrens zur Herstellung teilchenförmiger Schaumregulatorgranulate führt man im wesentlichen wie in der internationalen Patentanmeldung WO 98/09701 beschrieben in einem Granulationsmischer eine Aufbaugranulation derart durch, daß man eine Menge von 50 bis 100 Gewichtsteilen, insbesondere 60 bis 85 Gewichtsteilen an anorganischem Trägersalz, vorzugsweise enthaltend Alkalisulfat, Alkalicarbonat und/oder Alkalihydrogencarbonat, gegegebenfalls mit einer Menge von bis zu 5 Gewichtsteilen, insbesondere 1 bis 3 Gewichtsteilen eines anionischen und/oder nichtionischen Celluloseethers intensiv mischt, unter weiterem Granulieren eine Menge von 1 bis 10 Gewichtsteilen, insbesondere 2 bis 8 Gewichtsteilen wäßriger Alkalisilikatund/oder polymerer Polycarboxylat-Lösung zugibt, und daraufhin 10 Gewichtsteile der gegebenenfalls auf eine Temperatur im Bereich von 70 °C bis 180°C erwärmten Schaumregulatoremulsion zusetzt. In a preferred variant of the process for producing particulate foam regulator granules one carries out essentially as in the international patent application WO 98/09701 described a build-up granulation in a granulation mixer in this way in that an amount of 50 to 100 parts by weight, in particular 60 to 85 parts by weight on inorganic carrier salt, preferably containing alkali metal sulfate, Alkali carbonate and / or alkali bicarbonate, optionally with an amount of up to 5 parts by weight, in particular 1 to 3 parts by weight of an anionic and / or nonionic cellulose ether intensively mixed, with further granulation a lot from 1 to 10 parts by weight, in particular from 2 to 8 parts by weight, of aqueous alkali metal silicate and / or polymer polycarboxylate solution is added, and then 10 parts by weight of the optionally heated to a temperature in the range of 70 ° C to 180 ° C Added foam regulator emulsion.

BeispieleExamples Beispiel 1example 1

Aus den in der nachfolgenden Tabelle mit ihren Mengen angegebenen Bestandteilen wurden wäßrige Emulsionen E1, E2, E3 und E4 hergestellt. Dabei ging man so vor, daß man das Paraffinwachs (beziehungsweise das Gemisch aus Paraffinwachs und Silikonöl) und das Bistearylsäureethylendiamid zusammen mit dem Emulgator I beziehungsweise II durch Erwärmen auf eine Temperatur von etwa 150 °C schmolz und in kaltes Wasser (E1 und E4) beziehungsweise eine wäßrige Lösung des Emulgators III (E2 und E3) einrührte. Zusammensetzung der Schaumregulatoremulsionen [Gew.-%] Mittel E1 E2 E3 E4 Paraffinwachs 44 44 40 41 Silikonöl - - 4,5 3,5 Bistearylsäureethylendiamid 6 6 6 6 Emulgator I 5 5 5 - Emulgator II - 4 - 7,5 Emulgator III - 4 5,5 - Wasser auf 100 From the components indicated in the following table with their quantities, aqueous emulsions E1, E2, E3 and E4 were prepared. The procedure was followed by melting the paraffin wax (or the mixture of paraffin wax and silicone oil) and the Bistearylsäureethylendiamid together with the emulsifier I or II by heating to a temperature of about 150 ° C and in cold water ( E1 and E4 ) respectively an aqueous solution of the emulsifier III ( E2 and E3 ) was stirred. Composition of the foam regulator emulsions [% by weight] medium E1 E2 E3 E4 paraffin wax 44 44 40 41 silicone oil - - 4.5 3.5 Bistearylsäureethylendiamid 6 6 6 6 Emulsifier I 5 5 5 - Emulsifier II - 4 - 7.5 Emulsifier III - 4 5.5 - water on 100

Die so erhaltenen Schaumregulatoremulsionen wurden in Anlehnung an das in WO 98/09701 beschriebene Verfahren in Mengen von 30 Gew.-% auf ein anorganisches teilchenförmiges Trägermaterial aufgebracht. Die so erhaltenen Schaumregulatorgranulate wurden in einer Menge von jeweils 1 Gew.-% zu einem entschäumerfreien teilchenförmigen Waschmittel zugesetzt, was bei Waschtemperaturen von 40 °C, 60 °C und 90 °C eine Entschäumerleistung ergab, die nicht hinter derjenigen bei Einsatz auf konventionelle Art hergestellter Entschäumergranulate zurückstand.The foam regulator emulsions thus obtained were prepared on the basis of the method described in US Pat WO 98/09701 described method in amounts of 30 wt .-% to an inorganic particulate carrier material applied. The foam regulator granules thus obtained were each in an amount of 1 wt .-% to a defoamer particulate detergent added, resulting in washing temperatures of 40 ° C, 60 ° C. and 90 ° C gave a defoamer performance that did not lag behind when used conventional type of defoamer granules produced backlog.

Claims (23)

  1. Aqueous foam control emulsion comprising 16% by weight to 70% by weight of foam control active ingredient based on paraffin wax or based on paraffin wax and silicone oil, 2% by weight to 15% by weight of nonionic and/or anionic emulsifier, and not more than 80% by weight of water, where the paraffin wax base is a combination of paraffin wax and bis-fatty acid amide.
  2. Aqueous foam control emulsion according to Claim 1, comprising 15% by weight to 60% by weight of paraffin wax or a mixture of paraffin wax and silicone oil, 1% by weight to 10% by weight of bis-fatty acid amide derived from C2-7-diamines and C12-22-fatty acids, 2% by weight to 15% by weight of nonionic and/or anionic emulsifier, and not more than 80% by weight of water.
  3. Aqueous foam control emulsion according to Claim 1 or 2, characterized in that it comprises 30% by weight to 50% by weight of paraffin wax or a mixture of paraffin wax and silicone oil.
  4. Aqueous foam control emulsion according to one of Claims 1 to 3, characterized in that it comprises a mixture of silicone oil and paraffin wax in the weight ratio 2:1 to 1:100, in particular 1:1 to 1:10.
  5. Aqueous foam control emulsion according to one of Claims 1 to 4, characterized in that the paraffin wax is solid at room temperature and is in completely liquid form at 100°C.
  6. Aqueous foam control emulsion according to Claim 5, characterized in that the paraffin wax at 40°C has a liquid fraction of at least 50% by weight, in particular of 55% by weight to 80% by weight, and at 60°C a liquid fraction of at least 90% by weight.
  7. Aqueous foam control emulsion according to one of Claims 1 to 6, characterized in that it comprises 3% by weight to 8% by weight of bis-fatty acid amide derived from C2-7-diamines and C12-22-fatty acids.
  8. Aqueous foam control emulsion according to one of Claims 1 to 7, characterized in that it comprises 10% by weight to 40% by weight and in particular 15% by weight to 35% by weight, of silicone oil and 50% by weight to 80% by weight of water.
  9. Aqueous foam control emulsion according to one of Claims 1 to 7, characterized in that it has a content of silicone oil in the range from 0.1% by weight to 10% by weight, in particular 1% by weight to 5% by weight.
  10. Aqueous foam control emulsion according to one of Claims 1 to 9, characterized in that it comprises 3% by weight to 10% by weight of nonionic and/or anionic emulsifier.
  11. Aqueous foam control emulsion according to one of Claims 1 to 10, characterized in that the nonionic emulsifier is chosen from the alkoxylates, in particular the ethoxylates and/or propoxylates, of alcohols, alkylamines, vicinal diols and/or carboxamides which have alkyl groups with 8 to 22 carbon atoms, preferably 12 to 18 carbon atoms, and whose average degree of alkoxylation is from 1 to 10, in particular 2 to 5.
  12. Aqueous foam control emulsion according to one of Claims 1 to 10, characterized in that the anionic emulsifier is an alkali metal salt of alkylbenzenesulphonic acids with 9 to 13 carbon atoms in the alkyl group.
  13. Aqueous foam control emulsion according to one of Claims 1 to 12, characterized in that it comprises not more than 60% by weight, in particular 20% by weight to 50% by weight, of water.
  14. Aqueous foam control emulsion according to one of Claims 1 to 13, characterized in that, at 60°C, it has a viscosity below 2500 mPa.s, in particular in the range from 100 mPa.s to 500 mPa.s.
  15. Process for the preparation of an aqueous paraffin-wax based foam control emulsion according to one of Claims 1 to 14, characterized in that paraffin wax and bis-fatty acid amide are melted in the presence of the emulsifier by heating to temperatures in the range from 60°C to 150°C, in particular 80°C to 100°C, and the melt, if necessary, is cooled to a maximum of about 100°C and stirred into water.
  16. Process according to Claim 15, characterized in that, in addition to a nonionic emulsifier, an anionic emulsifier is used and the anionic emulsifier is added not to the melt, but to the water prior to stirring in the melt.
  17. Process for the preparation of an aqueous silicone oil-containing foam control emulsion according to one of Claims 1 to 14, characterized in that the silicone oil is mixed with the nonionic and/or anionic emulsifier, some of the amount of water is added with stirring so as to give an emulsion of the water-in-silicone type, further water is added until the emulsion inverts, the mixture is stirred vigorously and then the remaining water is added with stirring.
  18. Use of an aqueous foam control emulsion according to one of Claims 1 to 14 or obtainable according to one of Claims 15 to 17 for the foam control of aqueous systems with a tendency to foam, in particular of detergent and cleaner liquors.
  19. Use of an aqueous foam control emulsion according to one of Claims 1 to 14 or obtainable according to one of Claims 15 to 17 for the foam control or deaeration of, in particular, aqueous liquid detergents during their preparation and/or bottling.
  20. Use of an aqueous foam control emulsion according to one of Claims 1 to 14 or obtainable according to one of Claims 15 to 17 for the preparation of particulate detergents or cleaners by spraying onto granular particles which comprise all or at least some of the detergent or cleaner ingredients which are solid at room temperature.
  21. Process for the preparation of particulate foam control granules by spraying an aqueous foam control emulsion according to one of Claims 1 to 14 or obtainable according to one of Claims 15 to 17 onto a solid carrier material, optionally followed by a drying step.
  22. Process for the preparation of particulate foam control granules by spray-drying an aqueous slurry which is obtained by mixing an aqueous foam control emulsion according to one of Claims 1 to 14 or obtainable according to one of Claims 15 to 17 with solid carrier material and optionally water.
  23. Process according to Claim 21 or 22, characterized in that the carrier material has a combination of alkali metal hydrogencarbonate and alkali metal carbonate where their weight ratio is preferably 99:1 to 10:90, in particular 95:5 to 50:50.
EP99965429A 1998-12-11 1999-12-02 Aqueous foam control emulsion Expired - Lifetime EP1137751B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19857204A DE19857204A1 (en) 1998-12-11 1998-12-11 Aqueous foam regulator emulsion
DE19857204 1998-12-11
PCT/EP1999/009403 WO2000036063A1 (en) 1998-12-11 1999-12-02 Aqueous foam control emulsion

Publications (2)

Publication Number Publication Date
EP1137751A1 EP1137751A1 (en) 2001-10-04
EP1137751B1 true EP1137751B1 (en) 2005-03-16

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EP99965429A Expired - Lifetime EP1137751B1 (en) 1998-12-11 1999-12-02 Aqueous foam control emulsion

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US (1) US6340662B1 (en)
EP (1) EP1137751B1 (en)
DE (2) DE19857204A1 (en)
ES (1) ES2239477T3 (en)
WO (1) WO2000036063A1 (en)

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DE19857204A1 (en) 2000-06-15
US6340662B1 (en) 2002-01-22
EP1137751A1 (en) 2001-10-04
WO2000036063A1 (en) 2000-06-22
DE59911774D1 (en) 2005-04-21
ES2239477T3 (en) 2005-09-16

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