EP0070491A1 - Procédé pour la fabrication d'un produit de lavage anti-mousse contenant du silicone - Google Patents

Procédé pour la fabrication d'un produit de lavage anti-mousse contenant du silicone Download PDF

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Publication number
EP0070491A1
EP0070491A1 EP82106222A EP82106222A EP0070491A1 EP 0070491 A1 EP0070491 A1 EP 0070491A1 EP 82106222 A EP82106222 A EP 82106222A EP 82106222 A EP82106222 A EP 82106222A EP 0070491 A1 EP0070491 A1 EP 0070491A1
Authority
EP
European Patent Office
Prior art keywords
silicone
aqueous
component
spray
silicones
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
EP82106222A
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German (de)
English (en)
Other versions
EP0070491B1 (fr
Inventor
Herbert Dr. Reuter
Herbert Dr. Saran
Martin Dr. Witthaus
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
Priority to AT82106222T priority Critical patent/ATE11562T1/de
Publication of EP0070491A1 publication Critical patent/EP0070491A1/fr
Application granted granted Critical
Publication of EP0070491B1 publication Critical patent/EP0070491B1/fr
Expired legal-status Critical Current

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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
    • 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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/02—Preparation in the form of powder by spray drying
    • 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
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • C11D3/225—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin etherified, e.g. CMC

Definitions

  • silicone foam inhibitors are known, e.g. from DE-OS 20 50 768 and DE-OS 23 38 468. These silicones are organopolysiloxanes, such as alkyl and aryl polysiloxanes, in particular dimethylpolysiloxane, also their copolymers and block polymers with polyalkylene oxides and their acylation products with longer-chain carboxylic acids.
  • the silicones used as foam suppressants usually contain 0.2 to 10% by weight of highly disperse silica or highly disperse aluminum oxide, it being possible for the highly disperse silica to be obtained, for example, by thermal decomposition of silicon tetrachloride or by precipitation from silicate solutions and to be hydrophobicized by the action of organosilicon compounds.
  • Amounts of 0.1% by weight of silicones are normally sufficient to make detergents of conventional composition for use in household drum washing machines foam-proof. However, it is technically very difficult to distribute such small amounts homogeneously in a washing powder. If the silicone is dispersed in the aqueous batch (slurry) intended for hot spray drying, a substantial part of the effect is lost during the subsequent spray drying, so that two to four times the amount is forced to use the relatively complex silicone. - It has therefore repeatedly been proposed to mix the silicones onto solid carriers, for example builder salts or per compounds or to embed them in a carrier material and to mix the granular premix obtained with the majority of the detergent, for example a spray-dried hollow-sphere powder. However, several weight-controlled mixing processes are required for this, which considerably increases the effort. Another disadvantage is that the additional mixing process can lead to partial destruction of the hollow sphere structures and increased dust formation.
  • the method according to the invention avoids the disadvantages described above.
  • the invention relates to a process for the production of a foam-damped, silicone-containing detergent by spray drying an aqueous batch containing (A) conventional surfactants, skeletal salts and other detergent constituents which are stable under the conditions of spray drying, and (B) silicones which have a foam-suppressing action, characterized in that that an aqueous formulation containing the components (A) and a separately prepared aqueous dispersion which contains the silicones (B) in a particle size of 0.5-40 ⁇ m and a water-soluble or water-swellable, film-forming polymer in a to form contains sufficient amount of microcapsules, sprayed together.
  • the constituents (A) contained in the aqueous batch include conventional surfactants, which can be anionic, nonionic, zwitterionic or also cationic in nature.
  • Suitable anionic surfactants are soaps, in particular saturated or monounsaturated sodium fatty acid soaps with 12 to 22 carbon atoms, sulfonates, such as alkylbenzenesulfonates, in particular sodium dodecylbenzenesulfonate, furthermore alkanesulfonates, olefin sulfonates, ot sulfofatty acids, alkyl sulfosuccinates and alkyl ethersulfate fatty sulfates, and sulfate alcohols, such as sulfate alcohols, and sulfate alcohols .
  • Surfactants with aliphatic residues are usually straight-chain or methyl-branched (oxo residues), contain 10 to 20 carbon atoms and are salts of sodium, potassium, ammonium or organic ammonium bases.
  • Typical nonionic surfactants are in particular alkyl or alkenyl polyethylene glycol ethers with straight-chain and / or methyl-branched C 10 -C 20 radicals and 3 to 30 glycol ether groups, and also glycol ether derivatives with the same number of C atoms and glycol ether groups, which are derived from alkylphenols, alkylamines, thioalcohols, Derive fatty acids and fatty acid amides and block polymers of ethylene and propylene oxide known under the name "Pluronics”. Mixtures of various anionic and / or nonionic surfactants can also be present.
  • the constituents (A) include conventional skeleton salts (builder salts), such as polymer phosphates, in particular sodium tripolyphosphate, sodium silicate of the composition Na 2 0: Si0 2 , such as 1: 1 - 1: 3.5, sodium carbonate and, in particular, water-insoluble, finely crystalline or amorphous alkali aluminum silicates Formula (Na 2 0).
  • the skeletal salts also include the known sequestering agents, such as aminopolycarboxylic acids, polyphosphonic acids, which may have hydroxyalkyl or amino groups, polycarboxylic acids, ether carboxylic acids, hydroxycarboxylic acids and polymeric carboxylic acids, optionally having hydroxyl, ether or oxo groups, which are salts of Na , K, ammonium or organic ammonium bases can be present.
  • sequestering agents such as aminopolycarboxylic acids, polyphosphonic acids, which may have hydroxyalkyl or amino groups, polycarboxylic acids, ether carboxylic acids, hydroxycarboxylic acids and polymeric carboxylic acids, optionally having hydroxyl, ether or oxo groups, which are salts of Na , K, ammonium or organic ammonium bases can be present.
  • sequestering agents are, for example, nitrilotriacetic acid and ethylenediaminotetraes acetic acid, aminotri- (methylenephosphonic acid), ethylenediaminotetraphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid, methylenediphosphonic acid, ethylenediphosphonic acid and salts of the higher homologues of the polyphosphonic acids mentioned.
  • Suitable polycarboxylic acids are citric acid, tartaric acid, benzene hexacarboxylic acid and tetrahydrofuran tetracarboxylic acid as well as polycarboxylic acids containing carboxymethyl ether groups, such as 2,2'-oxydisuccinic acid, diglycolic acid, triscarboxymethylglycerol and biscarboxymethylglyceric acid.
  • Suitable representatives of polymeric carboxylic acids are those with a molecular weight of at least 350, such as polyacrylic acid, polymethacrylic acid, poly- ⁇ -hydroxyacrylic acid, polymaleic acid, polyitaconic acid, polymesaconic acid, polybutene tricarboxylic acid and the copolymers of the corresponding monomeric carboxylic acids with one another or with ethylenically unsaturated compounds, such as ethylene, propylene, Isobutylene and vinyl methyl ether, furthermore the polycarboxylic acids containing hydroxyl or aldehyde groups, which can be obtained by polymerizing acrolein and then converting to Canizzaro.
  • substance group (A) Other constituents to be assigned to substance group (A) are optical brighteners, anti-graying substances such as carboxylmethyl cellulose, methyl cellulose or methyl hydroxypropyl cellulose, stabilizers such as magnesium silicate, neutral salts such as sodium sulfate, powder improvers such as benzene, toluene, xylene and cumene sulfonate and sodium sulfonate as well as sodium .
  • optical brighteners such as carboxylmethyl cellulose, methyl cellulose or methyl hydroxypropyl cellulose
  • stabilizers such as magnesium silicate
  • neutral salts such as sodium sulfate
  • powder improvers such as benzene, toluene, xylene and cumene sulfonate and sodium sulfonate as well as sodium .
  • the compounds mentioned above, which are to be assigned to component (A), are therefore customary, Detergent constituents which are stable under the conditions of hot spray drying and are mixed in an aqueous, still pumpable and sprayable batch.
  • the water content of such a batch is, depending on the composition, generally 50-25% by weight.
  • the aqueous batch is usually conveyed from the batch container to a high-pressure pump and pumped from there via a pressure line (riser line) to the spray nozzles, of which several are usually attached in the head of the spray tower and are connected to one another via a ring line.
  • the aqueous batch is degassed in a vacuum chamber before it is transferred to the high pressure section.
  • the combination of the aqueous batch containing component (A) with the aqueous batch containing component (B), which is described in more detail below, is preferably carried out in a region which comprises the spray nozzles themselves and the high-pressure line leading to the spray nozzles. If the union takes place in the spray nozzles, these consist of two-substance nozzles with separate supply of the two partial streams. However, with equal success, but with less technical effort, the two partial streams can also be brought together in the high-pressure line leading to the spray nozzles, it being possible to use the single-component nozzles customary in spray technology.
  • the union of the two partial streams should preferably take place near the spray nozzle or shortly before the distributor ring to which the circularly arranged spray nozzles are connected. Additional Liche internals promoting the homogenization of the two partial flows are to be avoided, since this could result in a loss of effectiveness. This way of working is preferred.
  • Suitable silicones for the purposes of the invention are those which consist of elements of the formula are constructed in which R and R 'independently of one another are alkyl groups, such as methyl, ethyl, propyl and butyl groups or aryl groups, for example phenyl groups, and x is a number from about 20 to about 2000.
  • end groups are alkyl or hydroxyl groups.
  • Polydimethylsiloxanes with a viscosity of 20 cSt to 1500 cSt / 25 ° C are particularly suitable.
  • the aforementioned organopolysiloxanes, which are liquid at room temperature, can also be mixed with known polysiloxane resins are present, which, as described for example in US Pat. No. 2,676,182, 2,678,893 or 3,235,509, can be obtained by reacting alkylsiloxanes with chlorosilanes or SiO 2 . Such mixtures are known for example from DE-AS 16 19 859.
  • Self-emulsifying organopolysiloxanes which consist of block polymers of alkyl- or arylpolysiloxanes and polyglycol ethers and are known, for example, from DE-OS 23 45 335, 24 43 853, 25 18 053 and 25 34 250 are also useful.
  • the aqueous formulation containing the silicone dispersion also contains film-forming, water-soluble or swellable high polymers in an amount sufficient to form microcapsules in which the silicones are substantially enclosed after spray drying.
  • the weight ratio of silicone to film-forming polymers is preferably 10: 1 to 2: 1 and in particular 6: 1 to 3: 1.
  • the silicone content of the aqueous batch can be 2 to 25% by weight, preferably 5 to 20% by weight. , and the content of film-forming polymers 0.2 to 10 wt .-%, preferably 1 to 5 wt .-%.
  • Suitable water-soluble or swellable, film-forming polymers are in particular cellulose ethers, such as carboxymethyl cellulose (for example as the sodium salt) and methyl cellulose, furthermore hydroxyalkyl cellulose, such as hydroxyethyl cellulose, hydroxypropyl cellulose or mixed ethers, such as methyl hydroxypropyl cellulose and methyl carboxymethyl cellulose lulose. Mixtures of different cellulose ethers can also be used with advantage.
  • polystyrene resin soluble or depolymerized starch, starch ethers, starch esters, and also synthetic polymers such as polyacrylates, polymethacrylates, polyacrylamide, polyvinyl alcohol or partially saponified polyvinyl acetate, polyvinyl pyrrolidone, polymaleinates and copolymers which contain the elements of the aforementioned polymers. Mixtures of the homopolymers and copolymers mentioned are also suitable.
  • the silicones In the preparation of the aqueous dispersion of the silicones, it is expedient to proceed by first completely dissolving or allowing the polymers to swell and then adding the silicones. By means of suitable mechanical mixing, stirring and emulsifying devices it is ensured that the silicones have a particle or droplet size of 0.5 to 40 ⁇ m, preferably 1 to 20 ⁇ m. Such a dispersion is sufficiently stable that it can be conveyed to the spraying system without any noteworthy segregation and can be sprayed together with the detergent-containing slurry in the manner described.
  • water-soluble electrolyte salts can be added to the aqueous batch containing the silicones and high polymers after the fine dispersion of the silicones has been completed. There through the high polymers are wholly or partially precipitated from their aqueous solution or swelling, so that the microcapsules already form in the aqueous batch.
  • the electrolyte salt content of the suspension can be up to 25% by weight, preferably 5 to 20% by weight.
  • Suitable electrolyte salts are, for example, the chlorides, sulfates and nitrates of sodium, potassium and magnesium, and the silicates, phosphates, pyrophosphates and polymer phosphates, acetate, lactates and citrates of sodium and potassium.
  • Sodium sulfate and sodium phosphates are preferably used as electrolyte salts.
  • Dispersions in which the silicones are already encapsulated have the advantage that they can be stored for a long time. Framed dispersions can be homogenized again by simply stirring. If the use of electrolyte salts is dispensed with, the microcapsules form at the moment of their encounter with the aqueous mixture which contains the components (A).
  • the amounts of the two partial streams are regulated by means of doses such that the spray-dried detergent 0.02 to 0.4, preferably 0.05 to 0.2 and in particular approximately 0.1 to 0.15% by weight when leaving the drying tower Contains silicone. These amounts are sufficient for effective foam damping in most cases. They are significantly below the amounts of silicone that are required if the foam depressors are dispersed directly in the aqueous batch which contains the main amount of the detergent constituents (component A).
  • the silicone oil emulsion was then passed through a high-pressure pump and, at a pressure of 52 bar, fed into the pressure line leading to the spray nozzles and combined with the detergent slurry.
  • the feed was carried out immediately before the riser passed into the ring line leading to the individual spray nozzles (single-substance nozzles).
  • the drying tower was charged with air at an inlet temperature of 230 ° C. and an outlet temperature of 87 ° C., the air being conducted in countercurrent and swirl.
  • the mass flow of the aqueous batches was regulated so that 0.13% by weight of silicone oil was present in the spray-dried tower powder. After mixing in additional sodium perborate, the silicone oil content of the ready-to-use washing powder fell to 0.11% by weight.
  • the finished detergent ent held as essential constituents about 15% by weight of anionic and nonionic surfactants, 25% by weight of sodium tripolyphosphate, 24% by weight sodium aluminosilicate, 4.5% by weight sodium silicate, 22% by weight sodium perborate and 4, 5% by weight of other customary detergent ingredients, such as graying inhibitors, sequestering agents, optical brighteners, fragrances and sodium sulfate.
  • the detergents were checked for their foaming behavior in a conventional household drum washing machine with a maximum capacity of 5 kg of dry laundry with a detergent insert of 7.5 g / 1 and a filling of 2 kg of clean cotton fabric in the temperature range between 30 ° and 95 ° C checked. Both when using soft water of 6 ° dH and hard water of 16 ° dH, there was no excessive foaming or foaming at any time.
  • a detergent was used in which the same silicone oil had been mixed onto the sodium perborate subsequently added to the tower powder, the proportions being chosen so that the content of the finished detergent was also 0.11% by weight. While the foaming behavior of the two compositions to be compared was the same after a storage period of 24 hours, it was found after a storage period of 7 days that the effect of the mixed comparison sample compared to the sample according to the invention had clearly decreased, i.e. the agents according to the invention proved to be superior to the known agents with regard to the constancy of action.
  • Example 1 was repeated, but the partial streams were not combined in the pressure line, but instead were fed as separate streams to the feeds of a two-component nozzle. With regard to the foam properties, the compositions proved to be equivalent to those according to Example 1.
  • Example 1 1.52 kg of methyl cellulose and 1.16 kg of Na-carboxymethyl cellulose were dissolved in 73.32 kg of water with stirring, after which 10 kg of the silicone oil were mixed in after 1 hour. After fine dispersion (droplet size 1 - 20 ⁇ m), 14 kg of anhydrous sodium sulfate were added in portions over the course of 20 minutes with stirring. Some of the cellulose ethers precipitated and formed stable microcapsules. As described in Example 1, the capsule suspension was fed into the high-pressure line leading to the single-component nozzles. The amounts were metered in such a way that the content of the agent after the spray drying and the admixing of 20% by weight of sodium perborate was 0.1% by weight of silicone. The agents obtained proved to be foam-proof under test and practical conditions.

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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)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)
  • Silicon Polymers (AREA)
EP82106222A 1981-07-20 1982-07-12 Procédé pour la fabrication d'un produit de lavage anti-mousse contenant du silicone Expired EP0070491B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82106222T ATE11562T1 (de) 1981-07-20 1982-07-12 Verfahren zur herstellung eines schaumgedaempften, silikone enthaltenden waschmittels.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813128631 DE3128631A1 (de) 1981-07-20 1981-07-20 "verfahren zur herstellung eines schaumgedaempften, silikone enthaltenden waschmittels"
DE3128631 1981-07-20

Publications (2)

Publication Number Publication Date
EP0070491A1 true EP0070491A1 (fr) 1983-01-26
EP0070491B1 EP0070491B1 (fr) 1985-01-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106222A Expired EP0070491B1 (fr) 1981-07-20 1982-07-12 Procédé pour la fabrication d'un produit de lavage anti-mousse contenant du silicone

Country Status (5)

Country Link
US (1) US4419260A (fr)
EP (1) EP0070491B1 (fr)
AT (1) ATE11562T1 (fr)
BR (1) BR8204170A (fr)
DE (2) DE3128631A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336710A1 (fr) * 1988-04-07 1989-10-11 Dow Corning Corporation Agents antimousse à délivrance retardée
KR100858065B1 (ko) * 1999-09-22 2008-09-10 코닌클리케 필립스 일렉트로닉스 엔.브이. 발광 디바이스, 및 이를 제조 및 시험하는 방법

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US4725378A (en) * 1982-03-22 1988-02-16 The Dow Chemical Company Systems for delayed release of bleaching agents
DE3436194A1 (de) * 1984-10-03 1986-04-10 Henkel KGaA, 4000 Düsseldorf Verfahren zur herstellung eines schuettfaehigen entschaeumerpraeparates
US4652392A (en) * 1985-07-30 1987-03-24 The Procter & Gamble Company Controlled sudsing detergent compositions
US5160449A (en) * 1989-11-02 1992-11-03 Dow Corning Corporation Shampoo suspension containing amine functional polydiorganosiloxane
DE59103912D1 (de) * 1990-02-15 1995-01-26 Henkel Kgaa Verfahren zur herstellung eines schüttfähigen, phosphatfreien entschäumerpräparates.
WO1996008552A1 (fr) * 1994-09-13 1996-03-21 Kao Corporation Procede de lavage et composition detergente pour vetements
USRE38411E1 (en) * 1994-09-13 2004-02-03 Kao Corporation Washing method and clothes detergent composition
GB9426236D0 (en) * 1994-12-24 1995-02-22 Dow Corning Sa Particulate foam control agents and their use
DE19857204A1 (de) 1998-12-11 2000-06-15 Henkel Kgaa Wäßrige Schaumregulatoremulsion
ES2293913T3 (es) † 1999-07-20 2008-04-01 THE PROCTER & GAMBLE COMPANY Particulas de aceite encapsulado mejoradas.
DE19940262A1 (de) * 1999-08-25 2001-03-01 Cognis Deutschland Gmbh Waschmittelzusatzstoffe in fester Form
US6610752B1 (en) 1999-10-09 2003-08-26 Cognis Deutschland Gmbh Defoamer granules and processes for producing the same
DE10011564C1 (de) * 2000-03-09 2001-09-27 Goldschmidt Ag Th Verfahren zur Herstellung von Polyorganosiloxanemulsionen
DE10021113A1 (de) * 2000-05-02 2001-11-15 Henkel Kgaa Partikuläre Compounds, enthaltend nichtionische Tenside
DE10108459A1 (de) 2001-02-22 2002-09-12 Henkel Kgaa Schaumregulatorgranulat
DE10122436A1 (de) * 2001-05-09 2002-11-28 Henkel Kgaa Verfahren zur Herstellung silikonhaltiger Schaumregulatorgranulate
DE102005040273B4 (de) 2005-08-24 2007-08-30 Henkel Kgaa Verwendung von Schaumregulatorgranulaten als Ablagerungsverhinderer bei der maschinellen Textilwäsche
ES2399730B1 (es) * 2011-09-15 2013-11-15 Industrias Català, S.A. Procedimiento para el tratamiento de acondicionamiento y perfumado de textiles tras el aclarado y producto para llevar a cabo el procedimiento.
JP2013103204A (ja) * 2011-11-16 2013-05-30 Shin-Etsu Chemical Co Ltd 粉末消泡剤及びその製造方法
EP4013529A1 (fr) * 2019-08-14 2022-06-22 Elkem Silicones USA Corp. Procédé de préparation d'une composition de régulation de mousse sous forme de granulés ou de poudre

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DE2534250A1 (de) * 1974-12-19 1976-07-01 Dow Corning Schaumregulierendes mittel
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EP0022998A1 (fr) * 1979-07-20 1981-01-28 Henkel Kommanditgesellschaft auf Aktien Procédé de préparation d'un produit de lavage à faible pouvoir moussant

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DE3013391A1 (de) * 1980-04-05 1981-10-29 Henkel KGaA, 4000 Düsseldorf Verfahren zur herstellung eines entschaeumers fuer waessrige systeme und seine verwendung als schauminhibitor
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2518053A1 (de) * 1974-09-03 1976-03-11 Dow Corning Schaumregulierendes mittel
DE2534250A1 (de) * 1974-12-19 1976-07-01 Dow Corning Schaumregulierendes mittel
DE2753680A1 (de) * 1977-12-02 1979-06-07 Henkel Kgaa Verfahren zur herstellung pulverfoermiger, organische siliciumpolymere enthaltender waschmittel mit verbesserten loesungseigenschaften
DE2900063A1 (de) * 1979-01-02 1980-07-17 Henkel Kgaa Waschmittel mit einem gehalt an schaumdaempfend wirkendem polydimethylsiloxan und verfahren zu dessen herstellung
EP0022998A1 (fr) * 1979-07-20 1981-01-28 Henkel Kommanditgesellschaft auf Aktien Procédé de préparation d'un produit de lavage à faible pouvoir moussant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336710A1 (fr) * 1988-04-07 1989-10-11 Dow Corning Corporation Agents antimousse à délivrance retardée
KR100858065B1 (ko) * 1999-09-22 2008-09-10 코닌클리케 필립스 일렉트로닉스 엔.브이. 발광 디바이스, 및 이를 제조 및 시험하는 방법

Also Published As

Publication number Publication date
EP0070491B1 (fr) 1985-01-30
ATE11562T1 (de) 1985-02-15
DE3262141D1 (en) 1985-03-14
US4419260A (en) 1983-12-06
BR8204170A (pt) 1983-07-12
DE3128631A1 (de) 1983-02-03

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