WO1996011254A1 - Procede de production d'extrudats a effet detergent ou nettoyant - Google Patents

Procede de production d'extrudats a effet detergent ou nettoyant Download PDF

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Publication number
WO1996011254A1
WO1996011254A1 PCT/EP1995/003815 EP9503815W WO9611254A1 WO 1996011254 A1 WO1996011254 A1 WO 1996011254A1 EP 9503815 W EP9503815 W EP 9503815W WO 9611254 A1 WO9611254 A1 WO 9611254A1
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Prior art keywords
weight
extrudate
acid
extrudates
zeolite
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PCT/EP1995/003815
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German (de)
English (en)
Inventor
Kathrin Schnepp
Wolfgang Seiter
Wieland Schulze
Josef Markiefka
Bernd Larson
Norbert Kühne
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Henkel Kommanditgesellschaft Auf Aktien
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Publication of WO1996011254A1 publication Critical patent/WO1996011254A1/fr

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    • 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
    • C11D17/065—High-density particulate detergent 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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0082—Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads

Definitions

  • the invention relates to a method for producing known extrudates which are active in washing and cleaning.
  • the invention accordingly relates to a process for the production of extrudates with high density which are active in washing or cleaning, a homogeneous, solid and free-flowing premix which has been produced with the addition of a plasticizer and / or lubricant being extruded at high pressures of up to 200 bar and the strand after exiting the hole shape is cut to the predetermined granule size by means of a cutting device, the still plastic, moist raw extrudate is optionally fed to a further shaping processing step and then dried.
  • dry powders are added as powdering agents either during the drying step or immediately before the crude extrudate is transferred to the dryer, but in any case after the shaping processing step which may have been carried out.
  • finely divided dry powders which are common ingredients of detergents or cleaning agents, are suitable as powdering agents.
  • Zeolites in particular zeolites of type A and / or P, silicas, in particular microfine, silanized silica, salts of fatty acids, in particular calcium stearate, finely divided alkyl sulfates, neutral salts, in particular sodium sulfate, or mixtures of these, are preferred, mixtures of zeolite and Silicas or mixtures of zeolite and calcium stearate or mixtures of zeolite, silicas and calcium stearate are particularly preferred.
  • the further shaping processing step after the extrusion is carried out in a rounding device. It is then further preferred that after the completion of the shaping processing step, at least partially dust or fine particles which have accumulated during the shaping processing step are used as the powdering agent.
  • the amount of dust or fine fraction which is used as the powdering agent should advantageously not exceed 5% by weight, in particular 3% by weight, based in each case on the extrudate still to be dried.
  • the powdering agents can be used in amounts of up to about 8% by weight. Depending on the recipe, however, in the preferred cases 0.2 to 5% by weight, based on the extrudate to be dried, of powdering agent is sufficient to prevent the extrudates from sticking together in the drying step. Amounts in excess of this are therefore not preferred.
  • powdering agents both before and during the drying step, it being preferred to use a maximum of 50% by weight, based on the powdering agent, before the drying step.
  • powdering agents during the further shaping processing step. It is only essential to the invention that further powdering agents are added in the manner according to the invention after the rounding step.
  • the premix is preferably fed continuously to a 2-screw extruder with a co-rotating or counter-rotating screw guide, the housing and the extruder pelletizing head of which can be heated to the predetermined extruder temperature.
  • the premix is compressed, plasticized, in the form of fine strands by means of pressure, which is preferably at least 25 bar, but at extremely high throughputs depending on the apparatus used Hole die plate extruded in the extruder head and finally reduced the extrudate by means of a rotating knives preferably to approximately spherical to cylindrical granules.
  • the hole diameter of the perforated nozzle plate and the strand cut length are matched to the selected granule dimension.
  • granules of an essentially uniformly predeterminable particle size can be produced, and in particular the absolute particle sizes can be adapted to the intended use. In general, particle diameters of up to at most 0.8 cm are preferred.
  • Important embodiments provide for the production of uniform granules in the millimeter range, for example in the range from 0.5 to 5 mm and in particular in the range from approximately 0.8 to 3 mm.
  • the length / diameter ratio of the chipped primary extrudates (crude extrudates) is in an important embodiment in the range from about 1: 1 to about 3: 1.
  • the extrudates are then fed to a drying step, for example a fluidized bed dryer.
  • the extruded granules which contain peroxy bleaching agents, for example perborate monohydrate, can be dried at supply air temperatures between 80 and 150 ° C. without loss of active oxygen.
  • the premix can contain all the usual ingredients of detergents or cleaning agents, such as anionic, nonionic, cationic, amphoteric or zwitterionic surfactants, inorganic and organic builders, alkali carbonates and alkali silicates, bleaches, optical brighteners, graying inhibitors and, if appropriate, foam inhibitors, bleaching enzymes, enzyme activators, Textile calibrating substances, dyes and fragrances and neutral salts such as sulfates and chlorides in the form of their sodium or potassium salts.
  • Anionic surfactants used are, for example, those of the sulfonate and sulfate type.
  • Preferred surfactants of the sulfonate type are Cg-Ci3-alkylbenzenesulfonates, olefin sulfonates, dg mixtures of alkene and hydroxyalkalsulfonates and disulfonates, such as are obtained, for example, from Ci2-Ci8 * monoolefins with a terminal or internal double bond by sulfonation with gaseous sulfur trioxide and subsequent receives alkaline or acidic hydrolysis of the sulfonation products.
  • alkanesulfonates which are obtained from Ci2-Ci8-alkanes, for example by sulfochlorination or sulfoxidation with subsequent hydrolysis or neutralization.
  • esters of ⁇ -sulfo fatty acids esters of ⁇ -sulfo fatty acids (ester sulfonates), e.g. the ⁇ -sulfonated methyl esters of hydrogenated coconut, palm kernel or tallow fatty acids, or the disalts of the corresponding ⁇ -sulfofatty acids.
  • Other suitable anionic surfactants are sulfonated fatty acid glycerol esters.
  • Fatty acid glycerol esters are to be understood as meaning the mono-, di- and triesters and their mixtures as obtained in the production by esterification by a monoglycerol with 1 to 3 moles of fatty acid or in the transesterification of triglycerides with 0.3 to 2 moles of glycerol.
  • the sulfonation products represent a complex mixture which contains mono-, di- and triglyceride sulfonates with an ⁇ -position and / or internal sulfonic acid grouping.
  • sulfonated fatty acid salts, glyceride sulfates, glycerine sulfates, glycerin and soaps are formed. If one starts from the sulfonation of saturated fatty acids or hardened fatty acid glycerol esters, the proportion of the ⁇ -sulfonated fatty acid disalts can, depending on the procedure, be up to about 60% by weight.
  • Suitable sulfate-type surfactants are the sulfuric acid monoesters from primary alcohols of natural and synthetic origin.
  • the alk (en) yl sulfates here are the sulfuric acid half-esters of the C 16 -C 16 -alcohols, for example coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or from the corresponding oxo alcohols, and those secondary alcohols of this chain length prefers.
  • alk (en) yl sulfates of the chain length mentioned which contain a synthetic, straight-chain alkyl radical produced on a petrochemical basis and have an analogous degradation behavior like the appropriate compounds based on fettchemis raw materials.
  • Ci6-Cj8-Alk (en) ylsul are particularly preferred from the point of view of washing technology.
  • the alk (en) yl sulfates and, in particular, tallow fatty alkyl sulfates can be introduced into the Ver in any form.
  • Powders, pastes, granular compounds, for example, are also conceivable, for example those which are likewise obtained according to the L of the international patent application WO-A-93/04162.
  • D granular compounds are preferred which have a high content of alkyl sulfates, in particular a content of above 70% by weight of alkyl sulfates.
  • detergents or cleaning agents are prepared which contain 5 to% by weight of C8-Ci8-alk (en) yl sulfates and preferably Ci2-Ci8-alk (en) yl sulfate.
  • Soaps in particular in quantities of 0.5 to 5% by weight, are particularly suitable as further anionic components.
  • Suitable fatty acid soaps are suitable, such as the salts of lauric acid, myristic acid, P mitic acid or stearic acid, and in particular from natural fatty acids, e.g. Coconut, palm kernel or tallow fatty acids, derived soap genes.
  • the anionic surfactants and soaps can be in the form of their sodium, potassium or ammonium salts and as soluble salts of organic bases, such as mon di- or triethanola in.
  • the anionic surfactants are preferably in the form of their sodium or potassium salts, in particular in the form of sodium salts.
  • Preferred detergents or cleaning agents contain 5 40% by weight of surfactants, which may optionally consist entirely of anionic surfactants and in particular of alk (en) yl sulfates of the type specified above and in the amounts specified above.
  • the nonionic surfactants used are preferably alkoxylated, advantageously ethoxylated, in particular primary alcohols with preferably up to 18 carbon atoms and an average of 1 to 12 moles of ethylene oxide (E0) per alcohol, in which the alcohol radical can be linear or preferably methyl-branched or linear and can contain methyl-branched Re in the mixture, as is usually the case in oxo alcohols O 96/11254 PCI7EP95 / 0
  • alcohol ethoxyates with linear residues of alcohols of native origin with 12 to 18 carbon atoms for example from coconut, palm, tallow or oleyl alcohol, and an average of 2 to 8 EO per mole of alcohol are particularly preferred.
  • Preferred ethoxylated alcohols include, for example, Ci2-Ci4 alcohols with 3 EO or 4 EO, Cg-Cn-Alkonol with 7 EO, Ci3-Ci5 alcohols with 3 EO, 5 EO, 7 EO or 8 EO, Ci2-Ci8- Alcohols with 3 EO, 5 EO or 7 EO and mixtures of these, such as mixtures of C12-Ci4 alcohol rr 3 EO and Ci2-Ci8 alcohol with 5 EO.
  • ide represent statistical averages, which can be a whole for a special Prouukt or a broken Zah '.
  • Preferred alcohol ethoxylates have a narrow homolc distribution (narrow range ethoxylates, NRE).
  • fatty alcohols with more than 12 EO can also be used. Examples of this are tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO.
  • alkyl glycosides of the general formula R0 (G) x can also be used as further nonionic surfactants, in which R is a primary straight-chain or methyl-branched aliphatic radical with 8 to 22, preferably 12 to 18, C. -Atoms means and G is the symbol which stands for a glycose unit with 5 or 6 carbon atoms, preferably for glucose.
  • the degree of oligomerization x which indicates the distribution of monoglycos and oligoglycosides, is any number between 1 and 10; x is preferably 1.2 to 1.4.
  • Nonionic surfactants of the amine oxide type for example N-coconut alkyl-N, N-dimethylamine oxide and N-tallow alkyl-N, N-dihydroxyethylamine oxide, and the fatty acid alkanolamides can also be suitable.
  • the amount of these non-ionic surfactants is preferably not more than that of the ethoxylated fatty alcohols, in particular not more than half of them.
  • Suitable surfactants are polyhydroxy fatty acid of the formula (I),
  • the polyhydroxy fatty acid ides are known substances which can usually be obtained by reductive amination of a reducing sugar with ammonia, an alkylamine or an alkanolamine and subsequent acylation with a fatty acid, a fatty acid alkyl ester or a fatty acid chloride.
  • the preferred polyhydroxy fatty acid amides are fatty acid N-alkylglucamides.
  • Preferred washing or cleaning agents contain 2 to 25% by weight of non-ionic surfactants.
  • embodiments can be advantageous which contain anionic and nonionic surfactants in a weight ratio of 2: 1 to 1: 2 and in particular around 1: 1 to 1: 1.5.
  • the nonionic surfactants and in particular ethoxylated fatty alcohols are used in combination with constituents which improve the solubility of the extrudates.
  • constituents which improve the solubility of the extrudates are described, for example, in international patent applications WO-A-93/02176 and WO-A-93/15180.
  • the preferred ingredients include, in particular, fatty alcohols with 20 to 80 moles of ethylene oxide per mole of fatty alcohol, for example tallow fatty alcohol with 30 E0 and tallow alcohol with 40 E0, but also fatty alcohols with for example 14 E0 and polyethylene glycols with a relative molecular weight between 200 and 2000 .
  • Phosphates and in particular zeolites are suitable as builder substances.
  • the fine-crystalline, synthetic and bound water-containing zeolite used is preferably zeolite NaA in detergent quality.
  • zeolite X or P and mixtures of A, X and / or P are also suitable.
  • the zeolite can be used as a spray-dried powder or as an undried stabilized suspension which is still moist from its production.
  • the zeolite in the event that the zeolite is used as a suspension, it can contain small additions of nonionic surfactants as stabilizers, for example 1 to 3% by weight, based on zeolite ethoxylated Ci2-Ci8 fatty alcohols with 2 to 5 ethylene oxide groups, Ci2-Ci4 ⁇ fatty alcohols with 4 to 5 ethylene oxide groups or ethoxylated isotridecanols.
  • Suitable zeolites have an average particle size of less than 10 ⁇ m (volume distribution; measurement method: Coulter Counter) and preferably contain 18 to 22% by weight, in particular 20 to 22% by weight, of bound water.
  • Suitable substitutes or partial substitutes for phosphates and zeolites are crystalline, layered sodium silicates of the formula Na Si ⁇ 2 ⁇ + ⁇ * yH2 ⁇ , where M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20 and preferred values for x 2, 3 or 4 are.
  • Such crystalline layered silicates are described, for example, in European patent application EP-A-0 164 514.
  • Preferred crystalline sheet silicates are those in which M represents sodium and x assumes the values 2 or 3.
  • both ⁇ - and Üf sodium disilicate Na2Si2 ⁇ 5 * yH2 ⁇ are preferred.
  • Washing or cleaning agents which are preferably produced contain 15 to 60% by weight, in particular at least 20% by weight, of inorganic builder substances of the type specified above.
  • Useful organic builders are, for example, preferably in the form of their sodium salts polycarboxylic acids used, such as citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids, aminocarboxylic acids, nitrilotriacetic acid (NTA), provided such a r domestic set for ecological reasons not objectionable , as well as mixed: n from these.
  • Preferred salts are the salts of the polycarboxylic acids wit tronic acid, adipic acid, succinic acid, glutaric acid, tartaric acid, zuc acids and mixtures of these.
  • Their content in the washing / cleaning agents is preferably 0 to 20% by weight.
  • the polycarboxylic acids, in particular citric acid can also be used in highly toxic agents. AO
  • Suitable polymeric polycarboxylates are, for example, the sodium salt of polyacrylic acid or polymethacrylic acid, for example those with 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 have 50 to 90% by weight of acrylic acid and 50 to 10% by weight of maleic acid have proven to be particularly suitable contain.
  • Their relative molecular weight, based on free acids is generally 5,000 to 200,000, preferably 10,000 to 120,000 and in particular 50,000 to 100,000.
  • the (co) polymeric polycarboxylates can be used either as a powder or as an aqueous solution, 2 to 55% by weight. % aqueous solutions are preferred. Also particularly preferred are biodegradable terpolymers or quadropolymers, for example those which, according to DE-A-4300772, are salts of acrylic acid and de-maleic acid as monomers and vinyl alcohol or vinyl alcohol derivatives or DE-C-4221 381 are monomers of acrylic acid salts and the 2-A1 contain kylallylsulfonic acid as well as sugar derivatives.
  • the content of (co) polymeric polycarboxylates in the middle is preferably 2 to 8% by weight.
  • 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-A-0 280 223.
  • Preferred polyacetals are obtained from dialdehydes such as glyoxal, glutaraldehyde, terephthalaldehyde and mixtures thereof and from polyolcarboxylic acids such as gluconic acid and / or glucoheptonic acid.
  • Suitable ingredients of the agents are water-soluble inorganic salts such as bicarbonates, carbonates, amorphous silicates or mixtures thereof;
  • alkali carbonate and amorphous alkali silicate especially sodium silicate with a molar ratio Na2 ⁇ : Si ⁇ 2 of 1: to 1: 4.5, preferably of 1: 2 to 1: 3.5, are used.
  • the content of sodium carbonate in the agent is preferably up to 20% by weight, advantageously between 5 and 15% by weight.
  • the content of sodium silicate in the compositions is generally up to 15% by weight and preferably between 2 and 10% by weight.
  • the alkali silicates into the process at least partially in the form of an aqueous solution, for example in the form of a 10 to 45% by weight aqueous water glass solution.
  • alkali metal carbonates can also be replaced by sulfur-free, 2 to 11 carbon atoms and optionally an additional carboxyl and / or amino group and amino acids and / or their salts.
  • the alkali metal carbonates it is possible for the alkali metal carbonates to be partially or completely replaced by glycine or glycinate.
  • the sodium perborate tetrahydrate and the sodium perborate monohydrate are of particular importance.
  • Further bleaching agents which can be used are, for example, sodium percarbonate, peroxypyrophosphates, citrate perhydrates and peracid salts or peracids providing H2O2, such as perbenzoates, peroxophthalates, diperazelaic acid or diperdodecanedioic acid.
  • the bleaching agent content of the agents is preferably 5 to 25% by weight and in particular 10 to 20% by weight, with perborate monohydrate being advantageously used.
  • bleach activators can be incorporated into the preparations.
  • N-acyl or O-acyl compounds which form organic peracids with H2O2, preferably N, N'-tetraacylated diamines, furthermore carboxylic acid anhydrides and esters of polyols such as glucose pentaacetate.
  • Other known bleach activators are cetylated mixtures of sorbitol and mannitol, as are described, for example, in European patent application EP-A-0525239.
  • the content of lead activators in the bleach-containing compositions is in the customary range, preferably between 1 and 10% by weight and in particular between 3 and 8% by weight.
  • bleach activators are N, N, N '.N'-tetraacetylethylene diamine (TAED), 1,5-diacetyl-2,4-dicxo-hexahydro-1,5,5-triazine (DADHT) and acetylated sorbitoi-mannitol mixtures (S0RMAN).
  • TAED N, N, N '.N'-tetraacetylethylene diamine
  • DADHT 1,5-diacetyl-2,4-dicxo-hexahydro-1,5,5-triazine
  • S0RMAN acetylated sorbitoi-mannitol mixtures
  • a reduced foaming power which is desirable when working in machines, is often achieved by combining different types of surfactants, e.g. of sulfates and / or sulfonates with nonionic surfactants and / or with soaps.
  • surfactants e.g. of sulfates and / or sulfonates
  • nonionic surfactants and / or with soaps the foam-suppressing effect increases with the degree of saturation and the C number of the fatty acid residue.
  • Soaps of natural or synthetic origin that contain a high proportion of Ci8-C24 fatty acids are therefore suitable as foam-inhibiting soaps.
  • Suitable non-surfactant-like foam inhibitors are, for example, organopolysiloxanes and their mixtures with microfine, optionally silanized silica, and paraffins, waxes, microcrystalline waxes and their mixtures with silanized silica or bistearylethylenediamide. Mixtures of different foam inhibitors are also used with advantages, e.g. those made of silicone, 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. Mixtures of paraffins and bistearylethylenediamides are particularly preferred.
  • Enzymes from the class of proteases, lipases, aylases, Ce11ulases or mixtures thereof are possible. Enzymatic active ingredients obtained from bacterial strains or fungi such as Bacillus subtilis, Bacillus licheniform and Strepto yces griseus are particularly suitable. Proteases of the subtilisin type and in particular proteases which are obtained from Bacillus lentus are preferably used.
  • Enzyme mixtures for example of protease and amylase or protease and lipase or protease and cellulase or of cellulase and lipase or of protease, amylase and lipase or protease, lipase and cellulase, but in particular mixtures containing cellulase, are of particular interest.
  • Peroxides or oxidases have also proven to be suitable in some cases.
  • the enzymes can be adsorbed on carriers and / or embedded in Hü11 substances to protect them against premature decomposition.
  • the proportion of the enzymes, enzyme mixtures or enzyme granules can be, for example, about 0.1 to 5% by weight, preferably 0.1 to about 2% by weight.
  • the salts of polyphosphonic acids come as stabilizers, in particular for per-compounds and enzymes.
  • Phonic acid (HEDP) and Diethylerr iaminpentamethylenphosphonat into consideration. 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.
  • boron compounds for example boric acid, boron oxide, borax and other alkali metal borates such as the salts of orthoboric acid (H3BO3), metaboric acid (HBO2) and pyrobic acid (tetraboric acid H2B4O7), is particularly advantageous.
  • Graying inhibitors have the task of keeping the dirt detached from the fiber suspended in the liquor and thus preventing the dirt from being re-absorbed onto the fiber.
  • water-soluble colloids of mostly organic nature are suitable, 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 ester cellulose or starch. Also contain water-soluble, acidic groups.
  • de Polyamides are suitable for this purpose.
  • soluble starch preparations and starch products other than those mentioned above can be used, e.g. degraded starch, aldehyde starches, etc. Polyvinylpyrrolidone can also be used.
  • cellulose ethers such as carboxyethyl cellulose (sodium salt), methyl cellulose, hydroxyalkyl cellulose and mixed ethers, such as methyl hydroxyethyl cellulose, methyl hydroxypropyl cellulose, methyl carboxymethyl cellulose and mixtures thereof, and also polyvinylpyrrole, for example in amounts of 0.1 to 5% by weight, based on the Means used.
  • the agents can contain derivatives of diaminostilbenedisulfonic acid or its alkali metal salts. Suitable are, for example, salts of 4,4'-bis (2-anilino-4-morpholino-l, 3,5-triazinyl-6-amino) stilbene-2,2'-disulfonic acid or compounds of the same structure which contain an replace the morpholino group with a diethanola ino group, a methylamino group, an anilino group or a 2-methoxyethylamino group.
  • the type of the substituted diphenylstyryls can be present, for example the alkali salts of 4,4'-bis (2-sulfostyryl) diphenyl, 4,4'-bis (4-chloro- J- sulfostyryl) diphenyl , or 4- (4-chlorostyryl) -4 '- (2-sulfostyryl) diphenyl.
  • Mixtures of the aforementioned brighteners can also be used.
  • premixes which contain 10 to 30% by weight and in particular 15 to 25% by weight of anionic and nonionic surfactants, 20 to 40% by weight of zeolite, 2 to 15% by weight of sodium carbonate, 0 to 10% by weight sodium citrate, 1 to 5% by weight polymeric polycarboxylates and 0 to 20% by weight peroxy bleaching agent.
  • the finished washing or cleaning agents can be built up uniformly from extrudates which have the above-mentioned ingredients.
  • the extrudates are prepared with further ingredients of washing or cleaning agents. This can be such that the washing or cleaning agents are obtained from a mixture of several different granules, of which the extrudates according to the invention form the main component.
  • Bleach activators for example N, N'-tetraacylated diamines such as N, N, N ', N'-tetraacetylethylenediamine, enzyme granules containing enzymes, in particular protease and / or lipase and / or cellulase and / or amylase, are preferred, blends consisting of 2 or 3 enzymes can be particularly advantageous, and perfume added afterwards.
  • N, N'-tetraacylated diamines such as N, N, N ', N'-tetraacetylethylenediamine
  • enzyme granules containing enzymes in particular protease and / or lipase and / or cellulase and / or amylase
  • blends consisting of 2 or 3 enzymes can be particularly advantageous, and perfume added afterwards.
  • the extrudates can also be prepared with further finely divided dry powders before enzymes and the other ingredients are added.
  • examples include zeolite, silicas and salts of fatty acids, for example calcium stearate, bleach activator or mixtures of zeolite with one of the other powders mentioned.
  • the foaming behavior for detergents can be positively influenced if the foam inhibitor, for example organopolysiloxanes and their mixtures with microfine, optionally silanized silica, and paraffins, waxes, microcrystalline waxes and their mixtures with silanized silica or bistearylethylenediamide, at least in part is not extruded, but is subsequently mixed with the extrudate.
  • the surface of the extrudate according to the invention is first covered, for example, with zeolite or a zeolite-containing mixture and then with a foam inhibitor. Such measures make it possible to further improve the flushing behavior of the extrudates.
  • the bulk density of the extrudates produced according to the invention is preferably between 600 and 1200 g / 1, bulk densities between 700 and 1000 g / 1 and in particular between 750 and 950 g / 1 being particularly preferred.
  • a premix was prepared which was 7 parts by weight of alkylbenzenesulfonate and 6.5 parts by weight of C12-Ci8-alkyl sulfate. 2 parts by weight of Ci2-Ci8 fatty acid soap, 9 parts by weight of with 5 ethylene oxide groups, 37 parts by weight of zeolite, based on anhydrous active substance, 7.5 parts by weight of sodium citrate, 5.4 parts by weight of copolymeric salt of acrylic acid and maleic acid, 7 parts by weight .-% parts of sodium carbonate, 2 parts by weight of sodium sulfate, 0.4 parts by weight of salts from solutions and 11.2 parts by weight of water.
  • V4 Zeolite 5.5 Rounder does not stick 0.0 before dryer 0.0 in dryer

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Abstract

L'invention concerne un procédé d'extrusion pour produire des extrudats à effet détergent ou nettoyant, qui ont une masse volumique élevée. Un prémix homogène, solide et coulant, obtenu par adjonction d'un plastifiant et/ou d'un lubrifiant, est soumis à des pressions élevées allant jusqu'à 200 bar pour former un jonc. A sa sortie de la filière, le jonc est découpé à l'aide d'un dispositif de coupe, à la dimension de granulé prédéterminée. L'extrudat brut humide à l'état encore plastique est éventuellement acheminé jusqu'à une autre étape de traitement de formage, puis est séché. Une éventuelle adhérence de l'extrudat au cours du séchage peut être réduite par adjonction de poudres sèches faisant office d'agents de poudrage soit pendant le séchage, soit directement avant le transfert de l'extrudat brut dans le sécheur, en tout cas, après que l'éventuelle étape de formage ait été accomplie.
PCT/EP1995/003815 1994-10-06 1995-09-27 Procede de production d'extrudats a effet detergent ou nettoyant WO1996011254A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4435742.7 1994-10-06
DE19944435742 DE4435742A1 (de) 1994-10-06 1994-10-06 Verfahren zur Herstellung wasch- oder reinigungsaktiver Extrudate

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WO1996011254A1 true WO1996011254A1 (fr) 1996-04-18

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6169899A (ja) * 1984-09-14 1986-04-10 花王株式会社 流動性の改良された高密度の粒状洗剤の製法
WO1991002047A1 (fr) * 1989-08-09 1991-02-21 Henkel Kommanditgesellschaft Auf Aktien Fabrication de granules comprimes pour produits de lavage
WO1994001526A1 (fr) * 1992-07-02 1994-01-20 Henkel Kommanditgesellschaft Auf Aktien Preparation detergente solide ayant un meilleur comportement au rinçage
DE4235646A1 (de) * 1992-10-22 1994-04-28 Henkel Kgaa Verfahren zur Herstellung wasch- und reinigungsaktiver Extrudate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6169899A (ja) * 1984-09-14 1986-04-10 花王株式会社 流動性の改良された高密度の粒状洗剤の製法
WO1991002047A1 (fr) * 1989-08-09 1991-02-21 Henkel Kommanditgesellschaft Auf Aktien Fabrication de granules comprimes pour produits de lavage
WO1994001526A1 (fr) * 1992-07-02 1994-01-20 Henkel Kommanditgesellschaft Auf Aktien Preparation detergente solide ayant un meilleur comportement au rinçage
DE4235646A1 (de) * 1992-10-22 1994-04-28 Henkel Kgaa Verfahren zur Herstellung wasch- und reinigungsaktiver Extrudate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8621, Derwent World Patents Index; Class A81, AN 86-133906 *

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