EP1141186B1 - Granules tensioactifs - Google Patents

Granules tensioactifs Download PDF

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Publication number
EP1141186B1
EP1141186B1 EP99968345A EP99968345A EP1141186B1 EP 1141186 B1 EP1141186 B1 EP 1141186B1 EP 99968345 A EP99968345 A EP 99968345A EP 99968345 A EP99968345 A EP 99968345A EP 1141186 B1 EP1141186 B1 EP 1141186B1
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EP
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Prior art keywords
weight
fatty alcohol
granules
contain
acid
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EP99968345A
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German (de)
English (en)
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EP1141186A2 (fr
Inventor
Ditmar Kischkel
Jutta Stute
Manfred Weuthen
Stefan Podubrin
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BASF Personal Care and Nutrition GmbH
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Cognis Deutschland GmbH and Co KG
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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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • 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
    • C11D1/37—Mixtures of compounds all of which are anionic
    • 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
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/143—Sulfonic acid esters
    • 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
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146—Sulfuric acid esters

Definitions

  • the invention relates to surfactant granules of fatty alcohol sulfates and olefin sulfonates, a method to their preparation and the use of olefinsulfonates to improve the solubility of cold water of fatty alcohol sulfate granules.
  • Anionic surfactants in particular alkyl sulfates or fatty alcohol sulfates, are important constituents of washing, rinsing and cleaning agents. Due to their production, they are obtained as aqueous pastes with water contents of from 30 to 75% by weight. In order to obtain solid products, the aqueous pastes are dried, for example, in the spray tower or prepared by drying and simultaneous granulation, in particular in the fluidized bed. For example, it is known from European Patent EP 0603207 B that aqueous pastes of alkyl sulfates in the continuous fluidized bed can be converted by drying and simultaneous granulation into high bulk density granules. By this method it is also possible to mix in inorganic or organic carrier materials.
  • C 16/18 fatty alcohol sulfate granules prepared by drying and simultaneous granulation exhibit insufficient solubility and dispersibility at low temperatures. Since the solution of this problem is of great importance for cold wash processes, the object of the present invention was to improve the dissolving and dispersing behavior of C 16/18 fatty alcohol sulfates in granular structure at low temperatures.
  • Another object of the invention is a process for the preparation of surfactant granules, in which the aqueous paste of component (a) in the presence of component (b) drying under subject to simultaneous granulation.
  • An additional object of the invention is the use of olefin sulfonates in amounts of 3 to 25 wt .-% to improve the cold water solubility of Fatty alcohol sulfate granules.
  • Fatty alcohol sulfates which form component (a) are alkyl sulfates of the formula (I) R 1 O-SO 3 X (I) in which R 1 is a linear or branched, saturated or unsaturated hydrocarbon radical having 6 to 18 carbon atoms and X is an alkali or alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glucammonium.
  • Fatty alcohol sulfates are known anionic surfactants which are preferably obtained by sulfation of native fatty alcohols or synthetic oxoalcohols and subsequent neutralization.
  • fatty alcohol sulfates are the sodium salts of sulfation of Capronalkohols, Caprylalkohols, 2-Ethylhexylalkohols, capric alcohol, lauryl alcohol, isotridecyl alcohol, Myristylalkohols, cetyl alcohol, Palmoleylalkohols, stearyl alcohol, Isostearylalkohols, oleyl alcohol, Elaidylalkohols, Petroselinylalkohols, Linolylalkohols, Linolenylalkohols and Elaeostearylalkohols and technical mixtures thereof, for example, in the high-pressure hydrogenation of technical methyl esters based on fats and oils or aldehydes from Roelen's oxo synthesis and as a monomer fraction in the dimerization of unsaturated fatty alcohols incurred.
  • olefinsulfonates which are usually obtained by addition of SO 3 to olefins of the formula (II) and subsequent hydrolysis and neutralization
  • R 2 -CH CH-R 3 (II) wherein R 2 and R 3 are independently H or alkyl groups of 1 to 20 carbon atoms, provided that R 2 and R 3 together have at least 6 and preferably 10 to 16 carbon atoms.
  • olefinsulfonates are the sulfonation products obtained by reacting SO 3 with 1-, 2-, 3-, 4-octene, 1-, 2-, 3-, 4-, 5-decene, 1-, 2-, 3-, 4-, 5-, 6- dodecene, 1-, 2-, 3-, 4-, 5-, 6-, 7-tetradecene, 1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-hexadecene, 1-, 2-, 3-, 4-, 5-, 6-, 7-, 8-, 9-octadecene, 1-, 2-, 3-, 4, 5, 6, 7, 8, 9, 10 eicos and 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 - and / or 11-docoses.
  • ⁇ -olefin sulfonation product ie the ⁇ -olefin sulfonates
  • the hydrolyzed ⁇ -olefin sulfonation product are advantageously composed of about 60% by weight of alkanesulfonates and about 40% by weight of hydroxyalkanesulfonates; Of these, preferably 80 to 85 wt .-% mono- and 15 to 20 wt .-% disulfonates.
  • olefinsulfonates for example sodium olefinsulfonate (C 14 -C 16 ), Elfan® OS 46 A (Akzo Nobel), and also anhydrous products, for example sodium olefinsulfonate (C 14 -C 16 ), Elfan® OS 46 P (Akzo Nobel).
  • Another object of the invention relates to a process for the preparation of surfactant granules according to claim 1, wherein the aqueous paste of component (a) in the presence of the component (b) subject to drying with simultaneous granulation.
  • a preferred possibility is to subject the aqueous surfactant paste to a so-called SKET granulation.
  • SKET granulation This is to be understood as meaning a granulation with simultaneous drying, which preferably takes place batchwise or continuously in the fluidized bed.
  • the aqueous paste of component (a) for example a 30 to 65 wt .-% surfactant paste, and the component (b) are introduced simultaneously or successively via one or more nozzles in the fluidized bed.
  • component (b) is present as a solid, it is advisable to add it via a solids metered addition to the fluidized bed apparatus.
  • Preferably used fluidized bed apparatus Preferably used fluidized bed apparatus have bottom plates with dimensions of 0.4 to 5 m.
  • the SKET granulation is carried out at fluidized air velocities in the range of 1 to 8 m / s.
  • the discharge of the granules from the fluidized bed is preferably carried out via a size classification of the granules.
  • the classification can be carried out, for example, by means of a sieve device or by a countercurrent air stream (classifier air) which is regulated so that only particles above a certain particle size are removed from the fluidized bed and smaller particles are retained in the fluidized bed.
  • the incoming air is composed of the heated or unheated classifier air and the heated bottom air.
  • the soil air temperature is between 80 and 400, preferably 90 and 350 ° C.
  • a starting material for example a SKET granulate from an earlier experimental batch, is initially introduced at the beginning of the SKET granulation.
  • the water evaporates from the fatty alcohol sulfate paste to form dried to dried seeds, which are coated with other amounts of fatty alcohol surfactants and with Olefinsulfonaten, granulated and dried again at the same time.
  • German patent applications DE 4303211 A1 and DE 4303176 A1 the contents of which are hereby expressly included.
  • Simultaneous drying and granulation can also be carried out in a horizontally arranged thin-film evaporator with rotating internals, as sold, for example, by the company VRV under the name "Flash Dryer”.
  • Flash Dryer This is, in simplified terms, a tube that can be tempered differently over several zones. About one or more waves, which are provided with blades or flying crowds as rotating internals, the pasty feed, which is metered via a pump, is thrown against the heated wall at which the drying in a thin layer of typically 1 to 10 mm thickness he follows. It has proved to be advantageous to apply to the thin film evaporator a temperature gradient of 170 (product inlet) to 20 ° C (product discharge).
  • the first two zones of the evaporator can be heated to 160 ° C and the last cooled to 20 ° C. Higher drying temperatures have not proved to be advantageous in view of the thermal lability of the starting materials.
  • the thin-film evaporator is operated at atmospheric pressure and gassed in countercurrent with air (throughput 50 to 150 m 3 / h).
  • the inlet temperature of the gas is usually 20 to 30, the outlet temperature at 90 to 110 ° C.
  • An advantage of the granules is that they are not sticky and have high bulk densities in the range from 300 to 1200 and preferably 500 to 800 g / l.
  • Another possibility for producing the surfactant granules according to the invention is to treat the aqueous To subject surfactant pastes from the components (a) and (b) to a vacuum drying.
  • the aqueous pastes from the surfactants of the invention for example a 30 to 65 wt .-% surfactant paste, completely evaporated and the anhydrous residue following granules ground up.
  • the proviso is that the quantities are added to 100 wt .-%.
  • the information are each based on the active substance content of the components.
  • the granules according to the invention can after drying and simultaneous granulation still residual amounts of water, preferably below 5 wt .-% - based on granules - have.
  • Another object of the present invention is the Use of olefin sulfonates in amounts of 3 to 25 wt .-% to improve the cold water solubility of fatty alcohol sulfate granules.
  • inventively produced olefinsulfonate fatty alcohol sulfate granules are prepared according to a Another object of the invention for the production of detergents, rinses and detergents used. They may in conventional amounts, preferably in the range of 0.1 to 30 wt.% - Based on Means - be included.
  • the washing, rinsing and cleaning agents can be further typical ingredients, such as anionic surfactants, nonionic surfactants, builders, bleach, Bleach activators, detergency boosters, enzymes, enzyme stabilizers, grayness inhibitors, optical brighteners, soil repellants, foam inhibitors, inorganic salts and fragrances and dyes contain.
  • anionic surfactants are soaps, alkylbenzenesulfonates, alkanesulfonates, alkyl ether sulfonates, glycerol ether sulfonates, ⁇ -methyl ester sulfonates, sulfo fatty acids, fatty alcohol ether sulfates, glycerol ether sulfates, fatty acid ether sulfates, hydroxy mixed ether sulfates, monoglyceride (ether) sulfates, fatty acid amide (ether) sulfates, mono- and dialkyl sulfosuccinates, mono- and Dialkyl sulfosuccinamates, sulfotriglycerides, amide soaps, ether carboxylic acids and their salts, fatty acid isethionates, fatty acid sarcosinates, fatty acid taurides, N-acyl amino acids such as acyl amino acids
  • anionic surfactants contain polyglycol ether chains, these may have a conventional, but preferably a narrow homolog distribution.
  • Typical examples of nonionic surfactants are fatty alcohol polyglycol ethers, alkylphenol polyglycol ethers, fatty acid polyglycol ethers, fatty acid amide polyglycol ethers, fatty amine polyglycol ethers, alkoxylated triglycerides, mixed ethers, optionally partially oxidized alk (en) yloligoglycosides or glucuronic acid derivatives, fatty acid N-alkylglucamides, protein hydrolysates (especially wheat-based vegetable products).
  • Nonionic surfactants contain polyglycol ether chains, these may have a conventional, but preferably a narrow homolog distribution.
  • zeolite NaA As a solid builder in particular fine-crystalline, synthetic and bound water-containing zeolite such as zeolite NaA is used in detergent quality. Also suitable, however, are zeolite NaX and mixtures of NaA and NaX.
  • the zeolite can be used as a spray-dried powder or else as undried, still moist, stabilized suspension of its preparation. In the event that the zeolite is used as a suspension, it may contain minor additions of nonionic surfactants as stabilizers, for example 1 to 3 wt .-%, based on zeolite, of ethoxylated C 12 -C 18 fatty alcohols having 2 to 5 ethylene oxide groups or ethoxylated isotridecanols.
  • Suitable zeolites have an average particle size of less than 10 microns (volume distribution, measuring method: Coulter Counter) and preferably contain 18 to 22, in particular 20 to 22 wt .-% of bound water.
  • Suitable substitutes or partial substitutes for zeolites are crystalline, layered sodium silicates of the general formula NaMSi x O 2x + 1 .yH 2 O, where M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20 is and preferred values for x are 2, 3 or 4.
  • Such crystalline layered silicates are described, for example, in European Patent Application EP 0164514 A.
  • Preferred crystalline layered silicates are those in which M in the general formula stands for sodium and x assumes the values 2 or 3.
  • M in the general formula stands for sodium and x assumes the values 2 or 3.
  • both ⁇ - and ⁇ -sodium disilicates Na 2 Si 2 O 5 .yH 2 O are preferred, and ⁇ -sodium disilicate can be obtained, for example, by the process described in international patent application WO 91/08171 .
  • the powder detergents according to the invention preferably contain from 10 to 60% by weight of zeolite and / or crystalline layered silicates as solid builders, with mixtures of zeolite and crystalline layered silicates in any ratio being particularly advantageous.
  • the compositions contain from 20 to 50% by weight of zeolite and / or crystalline layered silicates.
  • Particularly preferred agents contain up to 40% by weight of zeolite and in particular to 35% by weight of zeolite, in each case based on anhydrous active substance.
  • Other suitable ingredients of the compositions are water-soluble amorphous silicates; Preferably, they are used in combination with zeolite and / or crystalline layer silicates.
  • the content of the amorphous sodium silicate compositions is preferably up to 15% by weight and preferably between 2 and 8% by weight.
  • Phosphates such as tripolyphosphates, pyrophosphates and orthophosphates may also be present in small amounts in the compositions.
  • the content of the phosphates in the compositions is preferably up to 15% by weight, but in particular 0 to 10% by weight.
  • the compositions may additionally contain phyllosilicates of natural and synthetic origin.
  • Such layered silicates are known, for example, from the patent applications DE 2334899 B, EP 0026529 A and DE 3526405 A. Its usability is not limited to any particular composition or structural formula. However, smectites, in particular bentonites, are preferred here.
  • small amounts of iron may be incorporated in the crystal lattice of the layered silicates according to the above formulas.
  • the phyllosilicates may contain hydrogen, alkali, alkaline earth metal ions, in particular Na + and Ca 2+ , due to their ion-exchanging properties.
  • the amount of water of hydration is usually in the range of 8 to 20 wt .-% and is dependent on the swelling state or on the type of processing.
  • Useful layered silicates are known, for example, from US Pat. No. 3,966,629 , US Pat. No. 4,062,647 , EP 0026529 A and EP 0028432 A.
  • phyllosilicates are used, which are largely free of calcium ions and strong coloring iron ions due to an alkali treatment.
  • Useful organic builders are, for example, the polycarboxylic acids preferably used in the form of their sodium salts, such as citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids, aminocarboxylic acids, nitrilotriacetic acid (NTA), if such use is not objectionable for ecological reasons, and mixtures thereof
  • Preferred salts are the salts of polycarboxylic acids such as citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids and mixtures thereof.
  • Suitable polymeric polycarboxylates are, for example, the sodium salts of polyacrylic acid or polymethacrylic acid, for example those having a relative molecular weight of 800 to 150,000 (based on acid).
  • Suitable copolymeric polycarboxylates are, in particular, those of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid. Copolymers of acrylic acid with maleic acid which contain 50 to 90% by weight of acrylic acid and 50 to 10% by weight of maleic acid have proven to be particularly suitable.
  • Their molecular weight relative to free acids is generally from 5000 to 200,000, preferably from 10,000 to 120,000 and in particular from 50,000 to 100,000. The use of polymeric polycarboxylates is not absolutely necessary.
  • polymeric polycarboxylates agents are preferred which biodegradable polymers, for example terpolymers containing as monomers acrylic acid and maleic acid or salts thereof and vinyl alcohol or vinyl alcohol derivatives or as monomers acrylic acid and 2-alkylallylsulfonic acid or salts thereof and sugar derivatives.
  • terpolymers are preferred which are obtained according to the teaching of German patent applications DE 4221381 A and DE 4300772 A.
  • Further suitable builder substances are polyacetals which can be obtained by reacting dialdehydes with polyolcarboxylic acids which have 5 to 7 carbon atoms and at least 3 hydroxyl groups, for example as described in European patent application EP 0280223 A.
  • Preferred polyacetals are obtained from dialdehydes such as glyoxal, glutaraldehyde, terephthalaldehyde and mixtures thereof and from polyol carboxylic acids such as gluconic acid and / or glucoheptonic acid.
  • sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance.
  • Further bleaching agents are, for example, peroxycarbonate, citrate perhydrates and salts of peracids, such as perbenzoates, peroxyphthalates or diperoxydodecanedioic acid. They are usually used in amounts of 8 to 25 wt .-%. Preference is given to the use of sodium perborate monohydrate in amounts of from 10 to 20% by weight and in particular from 10 to 15% by weight. Its ability to bind free water to form tetrahydrate contributes to increasing the stability of the agent.
  • bleach activators can be incorporated into the preparations.
  • N-acyl or O-acyl compounds which form organic peracids with hydrogen peroxide preferably N, N'-tetraacylated diamines, furthermore carboxylic acid anhydrides and esters of polyols, such as glucose pentaacetate.
  • the content of the bleach-containing agents in bleach activators is in the usual range, preferably between 1 and 10 wt .-% and in particular between 3 and 8 wt .-%.
  • Particularly preferred bleach activators are N, N, N ', N'-tetraacetylethylenediamine and 1,5-diacetyl-2,4-dioxo-hexahydro-1,3,5-triazine.
  • Suitable enzymes are those from the class of proteases, lipases, amylases, cellulases or mixtures thereof. Particularly suitable are bacterial strains or fungi, such as Bacillus subtilis, Bacillus licheniformis and Streptomyces griseus derived enzymatic agents. Preferably, subtilisin-type proteases and in particular proteases derived from Bacillus lentus are used. Their proportion can be about 0.2 to about 2 wt .-%.
  • the enzymes may be adsorbed to carriers and / or embedded in encapsulants to protect against premature degradation. In addition to the mono- and polyfunctional alcohols and the phosphonates, the agents may contain other enzyme stabilizers.
  • 0.5 to 1 wt .-% sodium formate can be used. It is also possible to use proteases which are stabilized with soluble calcium salts and a calcium content of preferably about 1.2% by weight, based on the enzyme.
  • proteases which are stabilized with soluble calcium salts and a calcium content of preferably about 1.2% by weight, based on the enzyme.
  • boron compounds for example boric acid, boron oxide, borax and other alkali metal borates, such as the salts of orthoboric acid (H 3 BO 3 ), metaboric acid (HBO 2 ) and pyroboric acid (tetraboric acid H 2 B 4 O 7 ).
  • Graying inhibitors have the task of keeping suspended from the fiber debris suspended in the fleet and thus to prevent graying.
  • Water-soluble colloids of mostly organic nature are suitable for this purpose, for example the water-soluble salts of polymeric carboxylic acids, glue, gelatin, salts of ether carboxylic acids or ether sulfonic acids of starch or cellulose or salts of acidic sulfuric acid esters of cellulose or starch.
  • water-soluble polyamides containing acidic groups are suitable for this purpose. It is also possible to use soluble starch preparations and starch products other than those mentioned above, for example degraded starch, aldehyde starches, etc. Polyvinylpyrrolidone is also useful.
  • cellulose ethers such as carboxymethylcellulose, methylcellulose, hydroxyalkylcellulose and mixed ethers, such as methylhydroxyethylcellulose, methylhydroxypropylcellulose, methylcarboxymethylcellulose and mixtures thereof and polyvinylpyrrolidone, for example in amounts of from 0.1 to 5% by weight, based on the compositions.
  • the agents may contain as optical brighteners derivatives of Diaminostilbendisulfonklare or their alkali metal salts.
  • Suitable salts are, for example, salts of 4,4'-bis (2-anilino-4-morpholino-1,3,5-triazinyl-6-amino) stilbene-2,2'-disulphonic acid or compounds of similar construction which are used in place of the morpholino Group a Diethanolaminooeuvre, a methylamino group, an anilino group or a 2-Methoxyethylaminoxx carry.
  • brighteners of the substituted diphenylstyrene type may be present, for example the alkali metal salts of 4,4'-bis (2-sulfostyryl) -diphenyl, 4,4'-bis (4-chloro-3-sulfostyryl) -diphenyl, or (4-chlorostyryl) -4 '- (2-sulfostyryl). Mixtures of the aforementioned brightener can be used.
  • Uniformly white granules are obtained when the means except the usual Aufhellem in conventional amounts, for example between 0.1 and 0.5 wt .-%, preferably between 0.1 and 0.3 wt .-%, even small amounts, for example 10 -6 to 10 -3 wt .-%, preferably by 10 -5 wt .-%, of a blue dye.
  • a particularly preferred dye is Tinolux® (commercial product of Ciba-Geigy).
  • Suitable soil repellents are those which preferably contain ethylene terephthalate and / or polyethylene glycol terephthalate groups, the molar ratio of ethylene terephthalate to polyethylene glycol terephthalate being in the range of 50:50 to 90:10.
  • the molecular weight of the linking polyethylene glycol units is in particular in the range from 750 to 5,000, ie the degree of ethoxylation of the polymers containing polyethylene glycol groups may be about 15 to 100.
  • the polymers are characterized by an average molecular weight of about 5000 to 200,000 and may have a block, but preferably a random structure.
  • Preferred polymers are those having molar ratios of ethylene terephthalate / polyethylene glycol terephthalate of from about 65:35 to about 90:10, preferably from about 70:30 to 80:20. Further preferred are those polymers comprising linking polyethylene glycol units having a molecular weight of from 750 to 5,000, preferably from 1000 to about 3000 and a molecular weight of the polymer of about 10,000 to about 50,000. Examples of commercially available polymers are the products Milease® T (ICI) or Repelotex® SRP 3 (Rhône-Poulenc).
  • foam inhibitors When used in automatic washing processes, it may be advantageous to add conventional foam inhibitors to the compositions .
  • soaps of natural or synthetic origin which have a high proportion of C 18 -C 24 fatty acids.
  • Suitable non-surfactant foam inhibitors are, for example, organopolysiloxanes and mixtures thereof with microfine, optionally silanized silica and paraffins, waxes, microcrystalline waxes and mixtures thereof with silanated silica or bistearylethylenediamide. It is also advantageous to use mixtures of different foam inhibitors, for example those of silicones, paraffins or waxes.
  • the foam inhibitors, in particular silicone- or paraffin-containing foam inhibitors are preferably bound to a granular, water-soluble or dispersible carrier substance. In particular, mixtures of paraffins and bistearylethylenediamides are preferred.
  • A C 16/18 fatty alcohol sulphate Sulfopon® T 55 (51.5% by weight of active substance)
  • B ⁇ -olefin sulfonate Elfan® OS 46 (37.0% by weight of active substance)
  • C C 12/14 fatty alcohol sulphate Texapon® LS 35 (35.2% by weight of active substance)
  • D Ocenol sulphate sodium salt (59.7% by weight of active substance)
  • aqueous pastes according to the invention 1 to 3 and the comparative pastes V1 to V6 were injected in each case in different experimental approaches in the fluidized bed plant. Characteristics of the procedure: supply air 720 to 750 Nm / h supply air temperature 140 to 150 ° C Air outlet temperature 80 to 85 ° C Verdüsungsmenge 21 to 30 kg / h Extract air 120 to 130 Nm / h Duration of the trial 4 h product Quantity 15 kg
  • Surfactant granules were obtained with the following characteristics: bulk weight 500 to 650 g / l Active substance content 88 to 97% residual moisture 2.0 to 3.0% by weight
  • the solubility of the obtained granules 1 , V1 and V4 was investigated in a hand wash test and the residue was determined.
  • Surfactant granules containing in addition to 95 wt .-% C 16/18 fatty alcohol sulfate 5 wt .-% ⁇ -olefinsulfonate ( 1 ) show improved solubility (residue: 7.0 wt .-%) compared to granules containing 5 wt % C 12/14 fatty alcohol sulphate ( V1 , residue: 40.0% by weight) or cesium sulphate sodium salt ( V4 , residue: 35.0% by weight).

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  • Engineering & Computer Science (AREA)
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Claims (9)

  1. Granulés d'agents tensioactifs consistant en : 75 à 97 % en poids de sulfates d'alcool gras ; et 3 à 25 % en poids de sulfate d'oléfine, les quantités se complétant à 100 % en poids.
  2. Granulés d'agents tensioactifs selon la revendication 1, caractérisés en ce qu' ils renferment comme composant a) des sulfates d'alcool gras de formule (I) R1 O SO3 X dans laquelle R1 représente un reste hydrocarboné linéaire ou ramifié, saturé ou non saturé, ayant de 6 à 18 atomes de carbone, et X représente un métal alcalin ou alcalino-terreux, un ammonium, un alkyl ammonium, un alkanol ammonium, ou un glucammonium.
  3. Granulés d'agents tensioactifs selon les revendications 1 ou 2, caractérisés en ce qu' ils contiennent comme composant b) des sulfonates d'oléfine que l'on obtient par addition de SO3 sur des oléfines de formule II et hydrolyse subséquente et neutralisation : R2 - CH = CH - R3 dans laquelle R2 et R3 indépendamment l'un de l'autre représentent H ou des restes alkyle ayant de 1 à 20 atomes de carbone, avec la précision que R2 et R3 possèdent ensemble au moins 6 atomes de carbone.
  4. Granulés d'agents tensioactifs selon au moins une des revendications 1 à 3, caractérisés en ce qu' ils contiennent comme composant b) des sulfonates d'oléfine qui sont composés de environ 60 % d'alkane sulfonates et d'environ 40 % d'hydroxy-alkane sulfonates, dont 80 à 85 % sont des mono et 15 à 20 % sont des disulfonates.
  5. Granulés d'agents tensioactifs selon au moins une des revendications 1 à 4, caractérisés en ce qu' ils consistent en de 85 à 95 % en poids de sulfates d'alcool gras ; de 5 à 15 % en poids d'oléfines sulfonates avec la précision que les quantités se complètent à 100 % en poids.
  6. Procédé de préparation de granulés d'agents tensioactifs selon la revendication 1, dans lequel on soumet les pâtes aqueuses du composant a) en présence du composant b) à un séchage tout en effectuant simultanément une granulation.
  7. Procédé selon la revendication 6, caractérisé en ce qu' on effectue la granulation en lit fluidisé.
  8. Utilisation des oléfines sulfonates en quantités de 3 à 25% en poids en vue de l'amélioration de la solubilité dans l'eau froide de granulés de sulfate d'alcool gras.
  9. Utilisation des granulés oléfine sulfonates sulfates d'alcool gras selon la revendication 1, pour la production de produits de lavage, de rinçage et de nettoyage.
EP99968345A 1998-12-19 1999-12-10 Granules tensioactifs Expired - Lifetime EP1141186B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19858886A DE19858886C2 (de) 1998-12-19 1998-12-19 Tensidgranulate
DE19858886 1998-12-19
PCT/EP1999/009739 WO2000037593A2 (fr) 1998-12-19 1999-12-10 Granules tensioactifs

Publications (2)

Publication Number Publication Date
EP1141186A2 EP1141186A2 (fr) 2001-10-10
EP1141186B1 true EP1141186B1 (fr) 2003-11-05

Family

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EP99968345A Expired - Lifetime EP1141186B1 (fr) 1998-12-19 1999-12-10 Granules tensioactifs

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US (1) US6780829B1 (fr)
EP (1) EP1141186B1 (fr)
DE (2) DE19858886C2 (fr)
ES (1) ES2211225T3 (fr)
WO (1) WO2000037593A2 (fr)

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* Cited by examiner, † Cited by third party
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DE10031619A1 (de) * 2000-06-29 2002-01-10 Cognis Deutschland Gmbh Tensidgranulate mit verbesserter Auflösegeschwindigkeit
EP1352951A1 (fr) * 2002-04-11 2003-10-15 The Procter & Gamble Company Granulé détergent comprenant un tensioactif nonionique et une hydrotrope
DE102004034141A1 (de) * 2004-07-15 2006-02-09 Cognis Ip Management Gmbh Verwendung von Lithiumsalzen von Fettalkoholsulfaten zum Reinigen von Bohrlöchern, Bohrgeräten oder Bohrklein
JP5020482B2 (ja) * 2005-01-13 2012-09-05 花王株式会社 アニオン界面活性剤粉粒体
WO2014072840A1 (fr) 2012-11-12 2014-05-15 Galaxy Surfactants Ltd. Sulfates d'alkyle gras aqueux hautement actifs fluides

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Also Published As

Publication number Publication date
WO2000037593A3 (fr) 2000-11-23
DE19858886C2 (de) 2002-10-31
ES2211225T3 (es) 2004-07-01
WO2000037593A2 (fr) 2000-06-29
EP1141186A2 (fr) 2001-10-10
US6780829B1 (en) 2004-08-24
DE19858886A1 (de) 2000-06-21
DE59907660D1 (de) 2003-12-11

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