EP1137751A1 - Emulsion aqueuse regulatrice de mousse - Google Patents

Emulsion aqueuse regulatrice de mousse

Info

Publication number
EP1137751A1
EP1137751A1 EP99965429A EP99965429A EP1137751A1 EP 1137751 A1 EP1137751 A1 EP 1137751A1 EP 99965429 A EP99965429 A EP 99965429A EP 99965429 A EP99965429 A EP 99965429A EP 1137751 A1 EP1137751 A1 EP 1137751A1
Authority
EP
European Patent Office
Prior art keywords
weight
foam regulator
aqueous
emulsion according
water
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.)
Granted
Application number
EP99965429A
Other languages
German (de)
English (en)
Other versions
EP1137751B1 (fr
Inventor
Thomas Otto Gassenmeier
Jürgen MILLHOFF
Maria Liphard
Rene-Andres Artiga Gonzalez
Stefan Hammelstein
Ingrid Kraus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP1137751A1 publication Critical patent/EP1137751A1/fr
Application granted granted Critical
Publication of EP1137751B1 publication Critical patent/EP1137751B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/835—Mixtures of non-ionic with cationic compounds
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/65—Mixtures of anionic with cationic compounds
    • 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
    • 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
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • 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
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • Aqueous foam regulator emulsion Aqueous foam regulator emulsion
  • the invention relates to a foam regulator system based on paraffin and / or silicone, which is in the form of an aqueous emulsion, its use for the production of particulate foam regulators and a process for their production.
  • EP 0 309 931 B1 describes particulate foam regulators which are suitable for use in detergents and cleaning agents and which consist of 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 with a certain melting range and 5-20% by weight of one of C 2 . 7 diamines and C ⁇ 2 . 22 fatty acids derived from diamids in finely divided form.
  • Such particulate foam control agents are produced by spray drying an aqueous slurry containing the carrier material and the defoamer mixture.
  • the defoamer performance of the defoamer mixture is said to be inadequate when sprayed onto a particulate detergent.
  • foam-regulating homogeneous mixtures of nonionic surfactant and a foam regulator system which contains paraffin wax and bis fatty acid amides to improve the manufacturability and the product properties of extruded detergents and cleaning agents is known from international patent application WO 96/26258.
  • German published patent application DE 23 38 468 is a detergent containing a silicone defoamer, which prevents interactions with the Detergent ingredients are protected.
  • aqueous melts which contain the silicone defoamer and a carrier substance, for example polyglycol, are first spray-dried and the particles obtained are provided with a coating in a fluidized bed of a solid, water-soluble coating material.
  • Salts which are customary in detergents, in particular tripolyphosphate or carboxymethyl cellulose, can be used as coating material.
  • Such a multi-stage manufacturing process is comparatively technically complex.
  • German laid-open specification DE 31 28 631 describes the production of foam-damped detergents containing silicone defoamers which are microencapsulated.
  • the silicone is dispersed in an aqueous solution of a film-forming polymer and the dispersion - separated from the other detergent components dissolved or dispersed in water - is fed to the spray drying system via a special line.
  • the two partial flows are combined in the area of the spray nozzle.
  • suitable film-forming polymers are cellulose ethers, starch ethers or synthetic water-soluble polymers and mixtures thereof.
  • the microcapsules are formed spontaneously in the spray nozzle or by prior precipitation by adding electrolyte salts to the silicone dispersion.
  • the process described is inevitably linked to the production of spray-dried detergents. A transfer to other detergents and cleaning agents produced by granulation or to other areas of application. is not possible with this way of working.
  • European patent application EP 097 867 describes a process for producing microencapsulated defoamer oils by mixing a silicone emulsion with an aqueous solution of carboxymethyl cellulose and precipitating the microcapsules by adding electrolytes, in particular polyvalent salts or organic solvents. There are considerable difficulties in homogeneously distributing the small amounts of silicone microcapsules required for adequate foam damping in a comparatively large amount of washing powder.
  • German published patent application DE 34 36 194 describes a process for producing a pourable defoamer granulate by spray drying an aqueous defoamer dispersion containing film-forming polymers.
  • a granulate of the composition 1 to 10% by weight of water-insoluble defoaming agent, 0.2 to 2% by weight of a mixture of sodium carboxymethyl cellulose and methyl cellulose in a weight ratio of 80:20 to 40:60, 70 to 90% by weight of inorganic, water-soluble or dispersible carrier salts, the rest of water, an aqueous solution containing 0.5 to 8% by weight of the cellulose ether mixture is allowed to swell at a temperature of 15 to 60 ° C.
  • the defoaming agent is dispersed in this solution and, after addition of the carrier salts and optionally water, the homogenized dispersion is spray-dried.
  • Organopolysiloxanes, paraffins and mixtures of organopolysiloxanes and paraffins are used as defoaming agents.
  • the defoamer active ingredient content is 1 to 10% by weight, preferably 3 to 7% by weight.
  • the carrier salt preferably consists of a mixture of sodium silicate, sodium tripolyphosphate and sodium sulfate.
  • a process for producing powder detergents which contains at least 5% by weight of anionic surfactant, 20-80% by weight of aluminosilicate and paraffin wax which is essentially insoluble in water and anionic and nonionic surfactants contain, which comprises the co-spraying or subsequent spraying of the paraffin onto the prefabricated detergent particles as an essential process step.
  • the paraffin wax can also be used in the form of a mixture with nonionic surfactants.
  • the variant of spraying the paraffin onto a prefabricated powder detergent disclosed in the last-mentioned document can only be used with difficulty if the paraffin wax is not to be used alone but in combination with a bis-fatty acid amide which is known to enhance its foam-regulating action.
  • a bis-fatty acid amide which is known to enhance its foam-regulating action.
  • Such bis fatty acid amides are usually solid at room temperature and have has a relatively high melting point, so that it or its combination with the paraffin can only be handled in liquid and sprayable form at an elevated temperature of, for example, about 140 ° C. If this temperature is undershot, the pipes and nozzles used become blocked by the solidification of the bis-fatty acid amide.
  • Another disadvantage is that such high temperatures of the spray material can lead to undesirable interactions with thermally sensitive components of the detergent.
  • an even distribution of the foam regulator system in the detergent is at risk if it cools down quickly as a highly heated spraying material after it hits the detergent powder.
  • the problem solved by the present invention was mainly to develop a liquid formulation of a foam regulator system containing silicone oil and / or paraffin and bis fatty acid amide, which is low-viscosity and can be handled at low temperatures and has the lowest possible proportion of ingredients not contributing to the foam regulator performance.
  • a foam regulator system containing silicone oil and / or paraffin and bis fatty acid amide, which is low-viscosity and can be handled at low temperatures and has the lowest possible proportion of ingredients not contributing to the foam regulator performance.
  • only as little as possible decrease in the defoamer performance may occur both in the manufacture and storage as well as in the eventual further processing of the liquid composition into particulate products.
  • the object of the invention with which this object is achieved is an aqueous foam regulator emulsion which contains 16% by weight to 70% by weight of foam regulator active substance based on paraffin wax and / or silicone oil, 2% by weight to 15% by weight nonionic and / or contains anionic emulsifier and not more than 80% by weight of water.
  • a paraffin wax base is understood to mean in particular 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 of paraffin wax or a mixture of paraffin wax and silicone oil, 1% by weight to 10% by weight , in particular 3% to 8% by weight of C 2 .
  • the invention also relates to a process for the production of particulate foam regulator granules by spraying said aqueous emulsion onto a solid carrier material, which is optionally followed by a drying step, or by spray drying an aqueous slurry obtained by mixing the foam regulator emulsion with solid carrier material and optionally water.
  • a foam regulator emulsion containing paraffin wax according to the invention is preferably produced by melting the paraffin wax and the bis fatty acid amide in the presence of the emulsifier, optionally cooling the melt to at most about 100 ° C. and stirring it into water. If mixtures of nonionic emulsifier and anionic emulsifier are used, it is preferred to incorporate the nonionic emulsifier into the melt of paraffin wax and bis fatty acid amide as described and to add the anionic emulsifier not to the melt but to the water before stirring the melt. If paraffin wax and bis fatty acid amide are used in a molten, not cooled form, it is preferred to use cold water with a temperature corresponding to at most room temperature.
  • melt is cooled to a temperature of at most approx. 100 ° C. before being stirred into water, it is preferred to use water at a temperature of approx. 50 ° C. to 80 ° C.
  • Conventional stirring devices are normally sufficient to achieve an even distribution of all components and thus to produce the aqueous emulsion according to the invention; the use of high-speed Mixing or homogenizers (e.g. Ultra Turrax®) is usually not required.
  • the additional incorporation of silicone oil is possible at any point in this process.
  • foam regulator emulsions which contain silicone oil as the sole foam regulator active ingredient or in a higher amount than the amount of paraffin wax
  • the silicone oil is preferably first mixed with the nonionic and / or anionic emulsifier, part of the amount of water is added with stirring so that a Emulsion of the type water in silicone is formed, continues to add water until the emulsion inverses, stirs intensely and then adds the remaining water while stirring.
  • the emulsion obtained in this way can optionally have a partially multiple character, that is to say that droplets of the original core emulsion of the water-in-silicone type can also be present in the outer water phase.
  • the foam regulator emulsions obtainable according to the invention are stable and, at 60 ° C., preferably have viscosities below 2500 mPa.s, in particular in the range from 100 mPa.s to 500 mPa.s, measured, for example, using a Brookfield rotary viscometer, spindle no. 2, 5 revolutions per minute.
  • paraffin waxes that come into question according to the invention are generally complex substance mixtures without a sharp melting point.
  • DTA differential thermal analysis
  • paraffins which are completely liquid at room temperature that is to say those having a solidification point below 25 ° C.
  • paraffins which are solid at room temperature can be used.
  • the paraffin wax is preferably solid at room temperature and is in completely liquid form at 100 ° C.
  • paraffin wax mixtures known from European patent application EP 0 309 931 can be used, for example from 26% by weight to 49% by weight of microcrystalline paraffin wax with a solidification point from 62 ° C. to 90 ° C., 20% by weight to 49% by weight .-% hard paraffin with a solidification point of 42 ° C to 56 ° C and 2% by weight to 25% by weight soft parafin with a solidification point of 35 ° C to 40 ° C. Paraffins or paraffin mixtures which solidify in the range from 30 ° C. to 90 ° C. are preferably used. It should be noted that even paraffin wax mixtures that appear solid at room temperature can contain different proportions of liquid paraffin.
  • the liquid fraction is as high as possible at 40 ° C. without already being 100% at this temperature.
  • Preferred paraffin wax mixtures have a liquid fraction of at least 50% by weight, in particular from 55% by weight to 80% by weight, at 40 ° C. and a liquid fraction of at least 90% 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 particularly preferred paraffin wax mixtures, in particular at 75 ° C. to 82 ° C. It is also important to ensure that the paraffins do not contain any volatile components.
  • Paraffin waxes contain less than 1% by weight, in particular less than 0.5% by weight, of parts which can be evaporated at 110 ° C. and normal pressure.
  • Paraffin waxes which can be used according to the invention can be obtained, for example, under the trade names Lunaflex® from Guer and Deawax® from DEA Mineralöl AG.
  • foam-regulating silicone oil or mixtures of paraffin wax with foam-regulating silicone oil can also be used.
  • the reference to silicone oil always also means the mixing thereof with finely divided fillers, for example hydrophilic or hydrophobic silicon dioxide, so-called highly disperse silica.
  • silicone oil for example polydimethylsiloxane
  • silicone oil is preferably present in mixtures of paraffin wax and silicone oil in such amounts that the foam regulator emulsion produced therefrom has a silicone oil content in the range from 0.1% by weight to 10% by weight, in particular 1% to 5% by weight.
  • 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 one 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.
  • a second essential component of the defoamer system is formed from bis fatty acid amides.
  • Bisamides are suitable 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-stearoylethylenediamine and mixtures thereof, and the corresponding derivatives of hexamethylenediamine.
  • the alkoxylates preferably the ethoxylates and / or propoxylates of alcohols, alkylamines, vicinal diols, carboxylic acids and / or carboxamides, the alkyl groups with 8 to 22 carbon atoms, are particularly preferred Have 12 to 18 carbon atoms, understood.
  • the average degree of alkoxylation of these compounds is generally from 1 to 10, preferably 2 to 5. They can be prepared in a known manner by reaction with the corresponding alkylene oxides.
  • Products which can be prepared by alkoxylation of fatty acid alkyl esters with 1 to 4 carbon atoms in the ester part by the process of international patent application WO 90 3533 are also suitable.
  • the alcohol alkoxylates in question include the ethoxylates and / or propoxylates of linear or branched-chain alcohols having 8 to 22 carbon atoms, preferably 12 to 18 carbon atoms.
  • Derivatives of fatty alcohols are particularly suitable, although their branched-chain isomers can also be used to prepare usable alkoxylates.
  • the ethoxylates of primary alcohols with linear dodecyl, tetra- decyl, hexadecyl or octadecyl radicals and mixtures thereof are also possible.
  • corresponding alkoxylates of mono- or polyunsaturated fatty alcohols include, for example, oleyl alcohol, elaidyl alcohol, linoleyl alcohol, linolenyl alcohol, gadoleyl alcohol and erucalcohol.
  • Esters or partial esters of carboxylic acids of corresponding carbon chain length with polyols such as glycerol or oligoglycerol can also be used.
  • Preferred anionic emulsifiers are alkali metal salts of alkylbenzenesulfonic acids with 9 to 13 carbon atoms in the alkyl group, in particular sodium dodecylbenzenesulfonate.
  • Hydroxyethyl cellulose may be included.
  • a homogeneous mixture of foam regulator system and in particular nonionic emulsifier is used.
  • This can advantageously be achieved in a simple manner by melting the bisamide which is solid at room temperature in the presence of the paraffin and the emulsifier, advantageously with stirring or homogenization. If the bisamide is not used in bulk, but pre-assembled in a mixture with the paraffin, heating above the melting point of the bisamide is generally not necessary, since a solution of the bisamide in the paraffin usually forms even at lower temperatures. Subsequent to the formation of the mixture of defoamer system and emulsifier, which is preferably carried out at temperatures in the range from 60 ° C. to 150 ° C., in particular 80 ° C.
  • the concentration of anionic emulsifier in water is preferably 5% by weight to 15% by weight.
  • the foam regulator system obtainable in this way is stable in storage at room temperature and can be used as such by simply adding it to the other components of the composition in liquid washing and cleaning agents.
  • foam regulation or deaeration especially of aqueous liquid detergents
  • the foam regulator emulsion according to the invention can be used for production and / or filling.
  • defoamer emulsion is to be applied to the entire particulate washing or cleaning agent, 0.1 to 5% by weight, in particular 0.25 to 3% by weight of defoamer emulsion is preferably applied to the emulsion Detergent or cleaning agent particles.
  • foam regulator granulate that is, the foam regulator active ingredients are not applied to the entire detergent, but to a part of the solid components usually contained therein (which are referred to below as carrier materials), and these foam regulator granules are then applied to the other solid components of the detergent or Mixing detergent, preferably 3 wt .-% to 60 wt .-%, in particular 15 wt .-% to 45 wt .-% of defoamer emulsion.
  • a drying step can be carried out, for example using conventional fluidized bed dryers, or the defoamer emulsion is applied with simultaneous drying, for example likewise in a fluidized bed. If you want to carry out the preparation in particle form with the aid of spray drying an aqueous slurry which contains the defoamer emulsion and the solid detergent ingredients or carrier materials, the quantitative ranges given above apply accordingly.
  • the solid and / or solid-form detergent or cleaning agent components to which or to at least one of which the emulsion according to the invention for the production of particulate products is applied, include customary powders, solid bleaches, in solid form produced by spray drying aqueous slurries of their ingredients assembled bleach activators, Anionic surfactant compounds not produced by conventional spray drying according to international patent application WO 93/04162 with a content of more than 80% by weight, in particular more than 90% by weight, of alkyl sulfate with alkyl chain lengths in the range from C 12 to C, g , the rest in consists essentially of inorganic salts and water, powdery polycarboxylate cobuilders, for example alkali citrate, solid inorganic builder materials such as zeolite A, zeolite P and crystalline layered silicates, and other inorganic salts such as alkali sulfate, alkali carbonate, alkali hydrogen carbonate and alkali silicate and mixture
  • a spray drying product used in a preferred variant of the process according to the invention and to which the foam regulator emulsion is to be applied preferably contains 25% by weight to 65% by weight, in particular 30% by weight to 60% by weight of inorganic builder and 7.5% by weight. % to 40% by weight, in particular 10% by weight to 30% by weight, of anionic surfactant, in particular synthetic anionic surfactant of the sulfate and / or sulfonate type.
  • the remainder to 100% by weight consists of customary ingredients of spray-dried washing - or cleaning agents, in particular water, preferably in amounts of up to 20% by weight, in particular from 8% by weight to 18% by weight, of organic cobuilder, preferably in amounts of up to 8% by weight, in particular from 3% by weight to 6.5% by weight, discoloration inhibitors, which are preferably used in spray-drying products intended for the production of detergents in amounts of up to 5% by weight, in particular 1.5% by weight to 3% by weight. -%, and inorganic water-soluble salts, for example alk alisulfates and / or carbonates, which are preferably contained in amounts of up to 20% by weight, in particular from 2% by weight to 12% by weight.
  • a granulation mixer is essentially carried out in a granulation mixer as described in international patent application WO 98/09701 in such a way that an amount of 50 to 100 parts by weight, in particular 60 to 85 parts by weight, of inorganic carrier salt is used , preferably containing alkali sulfate, alkali carbonate and / or alkali hydrogen carbonate, 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, with further granulation, an amount of 1 to 10 parts by weight, in particular 2 to 8 Parts by weight of aqueous alkali silicate and / or polymeric polycarboxylate solution are added, and then 10 parts by weight of the foam regulator emulsion, optionally heated to a temperature in the range from 70 ° C. to 180 ° C., are added.
  • inorganic carrier salt preferably containing alkali sulfate, alkali carbonate and / or alkali
  • Aqueous emulsions E1, E2, E3 and E4 were prepared from the constituents given in the table below with their amounts. The procedure was such that the paraffin wax (or the mixture of paraffin wax and silicone oil) and the bisstearyl acid ethylenediamide were melted together with the emulsifier I or II by heating to a temperature of about 150 ° C and in cold water (El and E4) and stirred in an aqueous solution of emulsifier III (E2 and E3).
  • the foam regulator granules thus obtained were added in an amount of 1% by weight to a defoamer-free particulate detergent, which gave a defoamer performance at washing temperatures of 40 ° C, 60 ° C and 90 ° C, which did not lag behind that when used in a conventional manner produced defoamer granules residue.
  • silicone oil and emulsifier components given in the table below were stirred together at room temperature until a homogeneous, highly viscous paste was obtained. A small amount of water was added with vigorous stirring. A water / silicone type emulsion was formed. With the further addition of water up to an approximately equal proportion based on the mixture of silicone oil and emulsifier, the emulsion was inversed. This was stirred vigorously for about 5 minutes. The remaining water was then added over a period of 10 minutes with constant stirring.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

L'invention concerne une formulation liquide d'un système régulateur de mousse contenant de la silicone et/ou de la paraffine et un bisamide d'acide gras. L'invention a pour objet de produire un tel système régulateur de mousse qui ait une faible viscosité, qui soit manipulable à de faibles températures et qui présente une fraction, la plus petite possible, de substances ne contribuant pas au rendement de régulation de mousse. Pour ce faire, l'émulsion aqueuse régulatrice de mousse contient 16 % à 70 % en poids de principe actif régulateur de mousse à base de cire de paraffine et/ou d'une base d'huile de silicone, 2 % à 15 % en poids d'émulsifiant non ionique et/ou anionique ainsi que 80 % en poids maximum d'eau. L'émulsion régulatrice de mousse sert, de préférence, à produire des granulés régulateurs de mousse particulaires destinés à être utilisés dans les produits de lavage et de nettoyage.
EP99965429A 1998-12-11 1999-12-02 Emulsion aqueuse regulatrice de mousse Expired - Lifetime EP1137751B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19857204 1998-12-11
DE19857204A DE19857204A1 (de) 1998-12-11 1998-12-11 Wäßrige Schaumregulatoremulsion
PCT/EP1999/009403 WO2000036063A1 (fr) 1998-12-11 1999-12-02 Emulsion aqueuse regulatrice de mousse

Publications (2)

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

Family

ID=7890752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99965429A Expired - Lifetime EP1137751B1 (fr) 1998-12-11 1999-12-02 Emulsion aqueuse regulatrice de mousse

Country Status (5)

Country Link
US (1) US6340662B1 (fr)
EP (1) EP1137751B1 (fr)
DE (2) DE19857204A1 (fr)
ES (1) ES2239477T3 (fr)
WO (1) WO2000036063A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939805A1 (de) * 1999-08-21 2001-02-22 Cognis Deutschland Gmbh Schaumkontrollierte feste Waschmittel
DE10108459A1 (de) * 2001-02-22 2002-09-12 Henkel Kgaa Schaumregulatorgranulat
GB0111863D0 (en) * 2001-05-15 2001-07-04 Unilever Plc Granular composition
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WO2000036063A1 (fr) 2000-06-22
EP1137751B1 (fr) 2005-03-16
US6340662B1 (en) 2002-01-22
DE59911774D1 (de) 2005-04-21
DE19857204A1 (de) 2000-06-15
ES2239477T3 (es) 2005-09-16

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