WO2003000835A1 - Compositions de detergent - Google Patents

Compositions de detergent Download PDF

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Publication number
WO2003000835A1
WO2003000835A1 PCT/GB2002/002718 GB0202718W WO03000835A1 WO 2003000835 A1 WO2003000835 A1 WO 2003000835A1 GB 0202718 W GB0202718 W GB 0202718W WO 03000835 A1 WO03000835 A1 WO 03000835A1
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WO
WIPO (PCT)
Prior art keywords
tablet
weight
clay
pellets
fabric softening
Prior art date
Application number
PCT/GB2002/002718
Other languages
English (en)
Inventor
Antonio Cordellina
Luca Rosa Fauzza
Original Assignee
Reckitt Benckiser N.V.
Reckitt Benckiser (Uk) Limited
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 Reckitt Benckiser N.V., Reckitt Benckiser (Uk) Limited filed Critical Reckitt Benckiser N.V.
Priority to EP02745551A priority Critical patent/EP1397477A1/fr
Publication of WO2003000835A1 publication Critical patent/WO2003000835A1/fr

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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
    • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
    • 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
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0065—Solid detergents containing builders
    • C11D17/0073—Tablets
    • C11D17/0086—Laundry tablets
    • 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
    • C11D3/001—Softening 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • C11D3/1246—Silicates, e.g. diatomaceous earth
    • C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
    • C11D3/126—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite in solid 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
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
    • 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
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3905—Bleach activators or bleach catalysts
    • C11D3/3907—Organic compounds
    • C11D3/3917—Nitrogen-containing compounds

Definitions

  • This invention relates to laundry detergent compositions which contain sufficient clay that the compositions provide a distinct softening effect, and in particular it relates to such compositions in the form of tablets with a fast disintegration time and good physical properties required for storing, shipping and handling.
  • the tablets should have good integrity before use, it is necessary also that they should disintegrate rapidly during use, when contacted with wash water. It is known to include a disintegrant which will promote disintegration of the tablet.
  • a disintegrant which will promote disintegration of the tablet.
  • Various classes of disintegrant are known, including the class in which disintegration is caused by swelling of the disintegrant.
  • swelling disintegrants have been proposed in the literature, with the preference being directed predominantly towards starches, celluloses and water soluble organic polymers.
  • Inorganic swelling disintegrants such as bentonite clay have also been mentioned, for instance in EP-A-466,484.
  • the same material acts as binder and disintegrant. It is also mentioned therein that the disintegrant may give supplementary building, anti- redeposition or fabric softening properties.
  • the amount of disintegrant is preferably 1 to 5 %. It is proposed in EP-A-466,484 that the tablet may have a heterogeneous structure comprising a plurality of discrete regions, for example layers, inserts or coatings.
  • JP-A-9/87696 is concerned with tablets containing a non-ionic detergent composition with a non-ionic surfactant as the main component and in particular is concerned with preventing the non-ionic surfactant from oozing out of the tablets during storage, and it is also concerned with the fact that the non-ionic surfactant causes a loss in the softening effect that would be expected when a softening clay is included. It describes the formulation of the tablets containing finely divided clay material, together with a finely divided oil absorbing carrier, and a disintegrant.
  • WO 0066695 discloses a 2 layer softening laundry detergent tablet with a higher concentration of a clay in one layer than in the second layer. A flocculant is concentrated in the second layer to aid dispersibility.
  • the clay is a smectite clay, with the characteristics defined below.
  • Clays are well known as being capable of imparting, among other properties, a softening effect to garments. But only a few particular grades have the right properties.
  • clay coated with an aluminosilicate, preferably zeolite gave tablets with good disintegration properties.
  • An additional beneficial effect is on the aesthetics of the tablet since the coating covers the grey cast produced on uncoloured products typical of using pure clay.
  • a fabric softening laundry tablet comprising;
  • iii 0 % to 3 % w/w of an enzyme; iv) at least 5 % w/w of a detergent builder; v) at least 3 % w/w of a surfactant; and a water content of less than 10 %w/w.
  • the amount of coated clay in the tablet is usually at least 5 % by weight of the tablet, preferably at least 8 % by weight, more preferably at least 10 % by weight of the tablet but usually less than 35 %, more preferably less than 30 %, most preferably less than 20 % by weight.
  • non-ionic and/or anionic surfactant there is preferably at least 5 % by weight non-ionic and/or anionic surfactant in the tablet.
  • the tablet is usually made by compression of particulate material.
  • the tablets of the invention are of a size which is convenient for dosing in a washing machine.
  • the preferred size is 30 to 40 g and the size can be selected in accordance with the intended wash load and the design of the washing machine which is to be used.
  • the clay is preferably mainly in the form of granules, with at least 50 % (and preferably at least 70 % or at least 90 %) being in the form of granules having a size of at least 100 ⁇ m up to 1400 ⁇ m, preferably up to 1250 ⁇ m, preferably 200- 1200 ⁇ m.
  • the amount of clay in the granules is at least 50 %, usually at least 70 % or 90 % of the weight of the granules.
  • the coating for the granules of clay may be a coating of an ingredient of the detergent composition, such as a builder, a surfactant or a binder, preferably a builder.
  • the granules are coated with, for example, zeolite and preferably zeolite A.
  • Coating techniques that can be used are readily known in the art and include spray coating, co-melt extrusion, coaservation and fluid bed coating techniques.
  • the coating present on the clay should be at least 5 % by weight of the tablet, preferably at least 8 % by weight, more preferably at least 10 % by weight of the granule, ideally less than 35 %, more preferably less than 30 %, most preferably less than 20 % by weight. At such levels the coatings produce more evenly shaped granules which aid the flowability of the granules, which is especially important in tabletting machines, in addition even coverage of the clay granule with an ingredient of the detergent composition allows for a more even integration of the clay granules into the composition.
  • the granular clay materials used to provide the fabric softening properties of the instant compositions can be described as expandable, three-layer clays, i.e., alumino- silicates and magnesium silicates, having an ion exchange capacity of at least 50 meq/lOOg of clay.
  • expandable as used to describe clays relates to the ability of the layered clay structure to be swollen, or expanded, on contact with water.
  • the three-layer expandable clays used herein are those materials classified geologically as smectites.
  • smectite-type clays There are two distinct classes of smectite-type clays; in the first, aluminium oxide is present in the silicate crystal lattice; in the second class of smectites, magnesium oxide is present in the silicate crystal lattice.
  • the general formulas of these smectites are Al 2 (Si 2 Os) 2 (OH) 2 and Mg 3 (Si 2 O 5 )(OH) 2 for the aluminium and magnesium oxide type clay respectively. It is to be recognised that the range of the water of hydration in the above formulas can vary with the processing to which the clay has been subjected.
  • the clays employed in the compositions of the instant invention contain cationic counterions such as protons, sodium ions, potassium ions, calcium ion, magnesium ion and the like. It is customary to distinguish between clays on the basis of one cation predominantly or exclusively absorbed.
  • a sodium clay is one in which the absorbed cation is predominantly sodium and is preferred.
  • Such absorbed cations can become involved in exchange reactions with cations present in aqueous solutions.
  • a typical exchange reaction involving a smectite-type clay is expressed by the following equation:
  • cation exchange capacity (sometimes termed "base exchange capacity") in terms of milliequivalents per 100 g of clay (meq/100 g).
  • base exchange capacity cation exchange capacity
  • the cation exchange capacity of clays can be measured in several ways, including by electrodialysis, by exchange with ammonium ion followed by titration or by a methylene blue procedure, all as fully set forth in Grimshaw, "The Chemistry and Physics of Clays", pp. 264/265, h terscience (1971).
  • the cation exchange capacity of a clay mineral relates to such factors as the expandable properties of the clay, the charge of the clay, which, in turn, is determined at least in part by the lattice structure, and the like.
  • any of the smectite-type clays having a cation exchange capacity of at least 50 meq/100 g are useful herein, certain clays are preferred.
  • the smectite clays used in the compositions herein are all commercially available. Such clays include, for example, bentonite, montmorillonite, volchonskoite, nontronite, hectorite, saponite, and vermiculite.
  • the clays herein are available under various tradenames, for example, Volclay from American Colloid Ltd., Steebent HW from Steetley Bentonite Ltd., Detercal from Laviosa Chimica S.p.a., Laundrosil from S ⁇ d-Chemie. It is to be recognised that such smectite-type minerals obtained under the foregoing tradenames can comprise mixtures of the various discrete mineral entities. Such mixtures of the smectite minerals are suitable for use herein.
  • a preferred smectite clay is bentonite.
  • a preferred method of manufacturing the laundry tablets of the present invention comprising the steps of
  • pelletising a flowable tower spray powder and a flowable detergent builder in a pellet mill to form a premix (preferably with a aluminosilicate content of at least 30 % w/w (weight of aluminosilicate/weight of pellets);
  • the tower spray powder is made up of the following constituents (weight/weight of tower spray powder):
  • anionic surfactant 20-60% anionic surfactant; 0-15% processing aid; 0-25% further zeolite; 12-45% inorganic alkali metal, preferably sodium, salt; and 0-20% additional constituent(s).
  • the tower spray powder comprises 30-50% of one or more anionic surfactant.
  • an alkali metal salt of an alkylbenzene sulphonic acid for example an LAS
  • an alkylbenzene sulphonic acid for example an LAS
  • an alkali metal salt of an alkylbenzene sulphonic acid (for example an LAS) is not present in the zeolitic powder which is to be palletised.
  • an anionic surfactant is present in the zeolitic powder which is to be pelletised.
  • an alkali metal salt of an alkylbenzene sulphonic acid for example an LAS
  • an alkylbenzene sulphonic acid for example an LAS
  • the pellets do not contain any anionic sulphate surfactant.
  • the post-mixed ingredients include an anionic sulphate surfactant, suitably providing 2-10%, preferably 3-7%, of the final cleaning agent (weight/weight).
  • a processing aid may be included, in the tower spray and/or the zeolitic powder and/or in the post-mixed ingredient(s), in order to improve the efficiency of a later pelletisation step and/or of a later tabletting step, where provided.
  • a suitable processing aid preferably functions as a plasticiser or lubricant.
  • Examples include a soap, preferably a solid soap; a nonionic surfactant; an acrylic polymer or copolymer, for example an acrylic/ maleic anhydride copolymer; starch or a derivative thereof; gelatin; polyvinyl alcohol; and water.
  • the tower spray powder may include further zeolite, but this is not essential.
  • the further zeolite preferably provides 4-30%, more preferably 6-20%, of the cleaning agent (weight/weight).
  • the further zeolite it is less than the input of zeolite from the zeolite powder added to the tower spray powder.
  • both the tower spray powder and the flowable zeolitic powder are preferably macroscopically dry when delivered to the pellet mill. Preferably, both are free-flowing.
  • the amount of liquid components present (if any) must not be such that the respective powders become damp, or sticky, or prone to form lumps.
  • Zeolite for use in the present invention is desirably stored in conditions which discourage water take-up from the atmosphere; for example it can be stored in closed or sealed plastic sacks.
  • the tower spray powder and the zeolitic powder are preferably mixed upstream of the pellet mill in a separate unit, for example a vertical mixer/granulator, a horizontal mixer/granulator or a tumbler unit, all of which are conventional. Preferably, no heating is provided during this step.
  • the zeolite content of the pellets is at least 35%, more preferably at least 40%. Most preferably, it is at least 45% and, especially, at least 50%.
  • the zeolite content of the pellets does not exceed 80%, more preferably 70%, most preferably the zeolite content of the pellets does not exceed 65%.
  • Pelletisation can be performed in a standard pellet mill, e.g. a Kahl mill or a UMT mill: the process is efficient and unproblematic. This was unexpected given the failure we encountered in trying to extrude such materials.
  • pellet mills Further information on pellet mills is readily available. Examples of patents concerning rotary pellet mills include DE 3813081, DE 3806945 and DE 3432780.
  • Preferably external heat is not provided in the pelletising step.
  • the temperature of the material being pelletised rises moderately, typically to temperatures in the range 30-55°C, without detriment.
  • the tower spray powder and the flowable zeolitic powder, as defined above, are preferably mixed together without any further material.
  • pellets which are products of the pellet mill are chopped strands, "shaved" from the outer wall of the pellet mill as pelletisation proceeds. Based on our work to date it does not seem necessary from a technical standpoint to treat the pellets in any way before mixing them with post-mixed ingredients, to form the end laundry cleaning agent. However, they could if wished, primarily for aesthetic reasons, be given a simple mechanical treatment in a "ploughshare" shovel mixer, to reduce their mean aspect ratio, to be as close as possible, what may be considered to be the aesthetic ideal, 1:1 (pellet length:maximum diameter). We have found it easy to reduce the mean aspect ratio of the as-formed pellets, by feeding them straight from the pellet mill into the shovel mixer, preferably when the pellets are still warm.
  • pellets may be spheronized. Preferably, however, the pellets are not spheronized.
  • pellets may be dusted with a powder to aid flowability.
  • the pellets are not dusted.
  • the mean aspect ratio of the pellets used in the post-mixing is in the range 0.5-5:1, more preferably 0.8-3:1 (pellet length:maximum diameter).
  • the pellets are circularly cylindrical and so the aspect ratio denotes length:diameter.
  • the pellets from the pellet mill are given a mechanical treatment to reduce their mean aspect ratio, to be within this range.
  • the pellets are intended as a universal base material to which the post-mixing ingredient(s) can be added, for example to make a heavy duty laundry detergent product, or a colour care laundry detergent product.
  • the pellets themselves preferably do not contain any of the "specialist" ingredients which are characteristic of such products.
  • the pellets preferably do not contain any enzymes, bleaching compounds or bleach activators.
  • the post-mixing ingredient(s) will depend on the target use for the laundry cleaning agent - for example for general purpose laundry; for heavy duty/white clothes.
  • the ratio of the pellets to the post-mixing ingredient(s) is in the range of 20-80 : 80-20 (weight/weight).
  • the ratio is in the range of 40-70 : 60-30.
  • the ratio is in the range 50-60 : 50-40.
  • the post-mixing ingredient(s) suitably include one or more of the following: a surfactant, for example an anionic and/or nonionic surfactant; sodium bicarbonate; sodium carbonate; sodium citrate; an anti-foaming agent; an enzyme; a bleaching agent; a bleach activator; a stabiliser, for example of the phosphonate type as defined above; a soil release polymer; a soil redeposition inhibitor; an optical brightener; a colorant; and a fragrance.
  • a surfactant for example an anionic and/or nonionic surfactant
  • sodium bicarbonate sodium carbonate
  • sodium citrate an anti-foaming agent
  • an enzyme e.g., sodium bicarbonate
  • a carbonate sodium citrate
  • an anti-foaming agent an enzyme
  • a bleaching agent e.g., sodium bicarbonate
  • sodium carbonate sodium citrate
  • an anti-foaming agent e.g., sodium bicarbonate
  • sodium carbonate
  • the clay is added as a post-mixing ingredient.
  • the surfactant component of the post-mixing ingredient(s) is relatively small, suitably making up not more than 10% of the total weight of post-mixing ingredient(s).
  • the post-mixing ingredients may include an alcohol sulphate and this is preferably the only anionic surfactant component, and preferably the only surfactant component, in the post-mixing ingredient(s).
  • the major complement of post-mixing ingredient(s) is a bleaching agent, for example sodium percarbonate, and a bleach activator, for example TAED; together preferably constituting at least 50% of the weight of post-mixing ingredient(s).
  • a particulate laundry cleaning agent may be made by simple mixing of the pellets and the post-mixing ingredient(s), for example in a tumbler unit.
  • the bulk density of the resulting particulate material is typically high, suitably at least 750g/l, preferably at least 800 g/1.
  • preferred laundry cleaning agents of the present invention are laundry tablets. Therefore, the invention preferably includes the step, after the step of mixing the pellets with the other ingredients, of pressing the particulate material to form a tablet.
  • one of the post-mixing ingredient(s) is a disintegrant, for example a rapidly water-swellable material, especially a water-swellable cellulosic material.
  • the disintegrant provides less than 10% of the total weight of the tablets of the present invention and preferably not more than 8%.
  • the tablets produced in accordance with the present invention have a density of at least 1 kg/1. More preferably, the tablets have a density of at least 1.1 kg/1 and most preferably at least 1.15 kg/1.
  • the tablets have a hardness of at least 50 N, preferably at least 80 N, as measured by a dynamometer as the maximum force required to break the upper surface of the tablet when a perpendicular force is applied to the centre of it, by a vertically orientated cylinder of diameter 0.5cm.
  • the tablets have a disintegration time of not more than 30 seconds, more preferably not more than 25 seconds, most preferably not more than 20 seconds, as measured by a standard method in which a laundry tablet is placed in a stainless steel mesh ladle, with mesh holes approximately 5mm x 5mm, and then successively lowered into and raised from a transparent tank containing 800 ml water at 20°C at a frequency of 60 immersions per minute. When no solid residue of the tablet can be seen within the ladle, the time is recorded ("disintegration time").
  • the pellets, and the other ingredients of the washing powder or of the particulate material to be tabletted are of size such that at least 90 wt% thereof are in the size range 150-1200 ⁇ m, more preferably in the size range 250-1000 ⁇ m (as determined by standard mesh test, employing ASTM sieves and a Retsch vibrator with predetermined amplitude and working time).
  • pellets and/or the particulate material resulting from the post-mixing may be graded, and overly large or small particles removed, for example for recycling.
  • the laundry tablets may have an exceptional combination of beneficial properties, namely high density, high zeolite content and a low amount of disintegrant (all of which would normally lead to long disintegration time); and yet, unexpectedly, exhibit a short disintegration time.
  • the solid laundry cleaning agents of the present invention contain no phosphate detergents.
  • the amount of surfactants in the cleaning agent is at least 10% by weight. Preferably it does not exceed 30%, more preferably 25%, by weight.
  • the zeolite content of the cleaning agent is at least 15% by weight, more preferably at least 20%, most preferably at least 25%, and, especially at least 25%.
  • Detergent tablets of the present invention can be prepared simply by mixing the solid ingredients together and compressing the mixture in a conventional tablet press as used, for example, in the pharmaceutical industry.
  • the principal ingredients in particular gelling surfactants, are used in particulate form.
  • Any liquid ingredients, for example surfactant or suds suppressor, can be incorporated in a conventional manner into the solid particulate ingredients.
  • the tablets may be manufactured by using any compacting process, such as tabletting, briquetting, or extrusion, preferably tabletting.
  • Suitable equipment includes a standard single stroke or a rotary press (such as Courtoy(R), Korsch(R), Manesty(R), or Bonals(R)).
  • Suitable organic and inorganic builders are soluble and/or insoluble components showing a mildly acidic, neutral or alkaline reaction which are capable of precipitating or complexing calcium ions.
  • Suitable and, in particular, ecologically safe builder systems such as finely cristalline, synthetic water-containing zeolites type, which have a calcium binding power of 100 to 200 mg CaO/g are preferably used.
  • Preferred synthetic crystalline aluminosilicate ion exchange materials useful herein are available under the designations Zeolite A, Zeolite P, and Zeolite X.
  • Natural zeolites include analcite, chabazite, heulandite, stilbite, fayisite, natrolite and thomsite.
  • the crystalline aluminosilicate ion exchange material has the formula:
  • the aluminosilicate has a particle size of about 0.1-10 microns in diameter.
  • the detergent builder preferably an aluminosilicate builder may be present in either or both layers, in at least 5 % by weight, preferably at least 15 % by weight, preferably at least 20 % by weight. A preferred range is 5 % to 40 % by weight.
  • Suitable builder constituents which may be used in particular together with the zeolite include (co)polymeric polycarboxylates, such as polyacrylates, polymethacrylates and, in particular, copolymers of acrylic acid with maleic acids, preferably those of 50% to 10% of maleic acid.
  • the molecular weight of homopolymers in generally in the range from 1000 to 100000 while the molecular weight of the copolymers is in the range from 50000 to 120000, based on free acid.
  • a particularly preferred acrylic acid/maleic acid copolymer has a molecular weight of 50000 to 100000.
  • Useful organic builders are, for example, polycarboxylic acids used in the form of their sodium salts, such as citric acid.
  • Suitable inorganic non-complexing salts are the bicarbonates, carbonates, borates or silicates of the alkali metals which are also known are "washing alkalis"
  • the level of builder can vary widely depending upon the end use of the composition.
  • Non limiting examples of surfactants include anionic surfactants alkali metal salts, ammonium salts, amine salts, aminoalcohol salts or magnesium salts of one or more of the following compounds: alkylsulphonates, alkylamide sulphonates, alkylarylsulphonates, olefinsulphonates, alkylamide sulphonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkylamide sulfosuccinates, alkyl sulfosuccinamate, alkyl sulfoacetates, acyl sarconsinates, acyl isothionates and N-acyl taurates.
  • anionic surfactants alkali metal salts, ammonium salts, amine salts, aminoalcohol salts or magnesium salts of one or more of the following compounds: alkylsulphonates, alkylamide sulphonates,
  • the alkyl or acyl group in these various compounds comprises a carbon chain containing 8 to 22, preferably, 12 to 20, carbon atoms.
  • anionic surfactants which may be used include salts (having cations as described above) of fatty acids, individually or as mixtures, including salts of oleic and stearic acids, and of acids of palm kernel oil, coconut oil and tallow; and lactylates whose acyl group contains 8 to 20 carbon atoms.
  • solid soaps and preferably solid alkali metal salts of C ⁇ 6-18 saturated fatty acids, especially of tallow fatty acids, as these are useful also as processing aids.
  • Suitable nonionic surfactants include alkoxylated alcohols, particularly alkoxylated fatty alcohols. These include ethoxylated and propoxylated fatty alcohols, as well as ethoxylated and propoxylated alkyl phenols, both having alkyl groups, suitably linear or secondary, of from 7 to 18, more preferably 8 to 16 carbon chains in length, and an average of 2 to 20 moles, preferably 2 to 10, most preferably 4 to 6 moles of alkylene oxide per mole of alcohol or phenol. Ethoxylated compounds are generally preferred.
  • nonionic surfactants that may be used are sorbitan esters of fatty acids, typically fatty acids having from 10 to 24 carbon atoms, for example sorbitan mono oleate.
  • nonionic surfactants that may be used are amine oxides and polyhydroxy fatty acid amides.
  • the tablet comprises at least 3 % by weight of surfactant, more preferably at least 5 % by weight, even more preferably at least 8 % by weight, and most preferably between 5 % and 20 % by weight of surfactant.
  • the amount of anionic is preferably at least 1.5 times, generally at least 2 or 3 times, the total amount of other surfactants.
  • bleaches Among the compounds yielding H 2 O 2 in water which serve as bleaches, sodium perborate tetrahydrate (NaB0 2 -H 2 O 2 -3H 2 O) and sodium perborate monohydrate (NaB0 2 -H O) are particularly important.
  • Other useful bleaches are, for example, peroxycarbonate (Na 2 CO T.5H 2 0 2 ), peroxypyrophosphates, citrate perhydrates and H 0 2 -yelding paracidic salts and peracids, such as perbenzoates, peroxaphtalates, diperazelaic acid or diperdodecandioic acid.
  • bleaching agents When present, bleaching agents will typically be at levels of from about 1 % to about 30 %, more typically from about 5 % to about 20 %, of the detergent composition, especially for fabric laundering.
  • bleach activators may be incorporated in the preparations.
  • suitable bleach activators are N-acyl or O-acyl compounds which from organic peracids with H 2 O 2 , preferably N, N'-tetraacylated diamines, such as TAED (N,N,N',N'-tetraacetyl ethylendiamine), also carboxylic anhydride and esters of polyols, such as glucose pentaacetate.
  • the detergent compositions herein may contain bleaching agents or bleaching compositions containing a bleaching agent and one or more bleach activators. If present, the amount of bleach activators will typically be from about 0.1 % to about 10%, more typically from about 0.5 % to about 6 % of the composition.
  • Suitable enzymes are enzymes from the class of proteases, lipases and amylases or mixture thereof. Enzymes obtained from bacterial strains pr fungi, such as Bacillus subtilis, Bacillus licheniformis and Stretomyces griseus, are particularly suitable. The enzymes may be absorbed onto supports and/or encapsulated in shell forming substances to prevent them against premature decomposition.
  • compositions herein will typically comprise from about 0.001 % to about 3 %, preferably 0.01 %-l % by weight of a commercial enzyme preparation.
  • Additional constituents of the detergent composition may be selected from a stabilizer, particularly for per compounds or enzymes.
  • Suitable stabilizers are salts of polyphosphonic acids, such as l-hydroxyethane-l,l-diphosphonic acid (HEDP), diethylenetriaminopentamethylene phosphonic acid (DETPMP), ethylenediaminotetramethylene phosphonic acid (EDTMP) and aminotrimethylene phosphonic acid (ATP).
  • an optical brightener for example a suitable stilbene compound, in particular diaminostilbene disulfonic acid or a derivative thereof, especially an alkali metal salt.
  • An optical brightener may conveniently be delivered via the tower spray powder.
  • a soil redeposition inhibitor for example one or more of polyvinyl pyrollidone, carboxymethyl- cellulose-sodium salt (CMC) or methylcellulose (MC).
  • a soil redeposition inhibitor may conveniently be delivered via the tower spray powder.
  • a tower spray powder having the following ingredients was prepared in the conventional manner, in a vertical tower, from an aqueous slurry.
  • the tower spray powder was mixed in equal weight with dry, virgin zeolite A powder in a concrete mixer.
  • the zeolite had been stored in sealed plastic sacks and nothing was added to it before the mixing.
  • the mixed material was fed into a Kahl pellet mill operated at 100 rpm to yield circularly cylindrical pellets, 1.3mm in diameter and approximately 8- 10mm in mean length.
  • the temperature of the pellets as they issued from the pellet mill was about 30-40°C. They were passed directly to a L ⁇ dige batch mixer, in which a short treatment with rotating ploughshare shovels reduced the mean length of the pellets to approximately 2-4 mm. At this point they were graded using a sieve, to remove powder for recycling.
  • Pellets produced as described above were post-mixed with the following ingredients in a standard concrete mixer in the proportions stated to yield a high density washing powder.
  • the final product contained the following:
  • the resulting mixture was fed repetitively to a Korsch tablet press, and pressed into white monolayer tablets of circularly cylindrical shape, having the following characteristics:

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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)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention concerne des compositions de détergent pour le linge qui contiennent une quantité suffisante d'argile pour que les compositions produisent un effet d'assouplissement sensible, et plus particulièrement des compositions sous forme de pastilles présentant un temps de décomposition rapide et de bonnes propriétés physiques nécessaires pour le stockage, le transport et la manipulation.
PCT/GB2002/002718 2001-06-22 2002-06-20 Compositions de detergent WO2003000835A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02745551A EP1397477A1 (fr) 2001-06-22 2002-06-20 Compositions de detergent

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0115328.7 2001-06-22
GB0115328A GB2376692A (en) 2001-06-22 2001-06-22 Fabric softening laundry tablet

Publications (1)

Publication Number Publication Date
WO2003000835A1 true WO2003000835A1 (fr) 2003-01-03

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EP (1) EP1397477A1 (fr)
GB (1) GB2376692A (fr)
WO (1) WO2003000835A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111607467A (zh) * 2020-06-12 2020-09-01 廊坊佰美生物科技有限公司 一种彩漂粉及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4632768A (en) * 1984-06-11 1986-12-30 The Procter & Gamble Company Clay fabric softener agglomerates
US5382377A (en) * 1990-04-02 1995-01-17 Henkel Kommanditgesellschaft Auf Aktien Process for the production of detergents
EP0634479A1 (fr) * 1993-07-14 1995-01-18 The Procter & Gamble Company Compositions détergentes stables contenant des agents de blanchiment
WO2001009278A1 (fr) * 1999-07-30 2001-02-08 Unilever N.V. Compositions detergentes
GB2362161A (en) * 2000-03-11 2001-11-14 Mcbride Robert Ltd Detergent tablets

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315763A (en) * 1996-07-31 1998-02-11 Procter & Gamble Preparation of an agglomerated detergent composition comprising a surfactant a an acid source
GB2342358A (en) * 1998-10-09 2000-04-12 Procter & Gamble Detergent compositions comprising cationic polymers
EP1048718A1 (fr) * 1999-04-30 2000-11-02 The Procter & Gamble Company Compositions détergentes
GB2352245A (en) * 1999-07-22 2001-01-24 Procter & Gamble Detergent compositions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4632768A (en) * 1984-06-11 1986-12-30 The Procter & Gamble Company Clay fabric softener agglomerates
US5382377A (en) * 1990-04-02 1995-01-17 Henkel Kommanditgesellschaft Auf Aktien Process for the production of detergents
EP0634479A1 (fr) * 1993-07-14 1995-01-18 The Procter & Gamble Company Compositions détergentes stables contenant des agents de blanchiment
WO2001009278A1 (fr) * 1999-07-30 2001-02-08 Unilever N.V. Compositions detergentes
GB2362161A (en) * 2000-03-11 2001-11-14 Mcbride Robert Ltd Detergent tablets

Also Published As

Publication number Publication date
GB0115328D0 (en) 2001-08-15
GB2376692A (en) 2002-12-24
EP1397477A1 (fr) 2004-03-17

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