WO2007007031A1 - Article de nettoyage et procédé de nettoyage - Google Patents

Article de nettoyage et procédé de nettoyage Download PDF

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Publication number
WO2007007031A1
WO2007007031A1 PCT/GB2006/002399 GB2006002399W WO2007007031A1 WO 2007007031 A1 WO2007007031 A1 WO 2007007031A1 GB 2006002399 W GB2006002399 W GB 2006002399W WO 2007007031 A1 WO2007007031 A1 WO 2007007031A1
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WO
WIPO (PCT)
Prior art keywords
sachet
sachets
load
washing
cleaning
Prior art date
Application number
PCT/GB2006/002399
Other languages
English (en)
Inventor
Laurence Geret
Andreas Wegner
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.
Publication of WO2007007031A1 publication Critical patent/WO2007007031A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • 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
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions

Definitions

  • the present invention relates to cleaning sachets, including dishwashing sachets, laundry cleaning sachets and wa- ter softening sachets used in cleaning methods.
  • the invention further relates to cleaning methods using such sachets .
  • Known detergent tablets / sachets may comprise a detergent composition together with other cleaning aid compositions.
  • EP-A-414462 discloses sachets comprising detergent for use in a washing machine.
  • the sachets comprise at least 23g of a mixture of a bleaching component and a detergent com- position. Each sachet is used as a half-dose so that a full dose of detergent composition is at least 46g.
  • known multi-benefit automatic dishwasher tablets / ⁇ sachets comprise three major components: a deter- gent composition, a water softening ("dishwasher salt function") composition and a rinse aid function. These components may be provided in separate conjoined layers of the product and arranged to dissolve into the wash water during different stages of the washing operation.
  • Such an automatic dishwasher product comprising a detergent, dishwasher salt function and rinse aid function to weigh between 20 and 25g.
  • a tablet may comprise around 1Og of detergent composition, around 1Og of water softening function composition and around Ig to 2g of rinse aid function.
  • a single tablet will be added regardless of the amount of crockery or extent of the soiling of the crockery which is to be washed in the dishwasher.
  • the different types can either be offered separately and mixed in the correct proportions by the user or provided as a pre-mixed product.
  • both cases have their own difficulties.
  • the difficulty arises of maintaining the correct proportions between the various tablet types when measuring out the amount required.
  • problems occur if the tablet types become unevenly distributed in the mixture or if they are separated during transport or storage.
  • GB-A-2 , 305, 931 discloses water soluble containers having a size sufficiently small to allow flexibility of use with regards to dosing for laundry compositions.
  • EP-A-700989 discloses water soluble packages for use in machine dishwashing compositions comprising preferably between 25g and packages containing from preferably about 5g to about 25g of detergent for use in automatic dishwashing.
  • the present invention aims to address at least one disadvantage associated with the prior art whether discussed herein or otherwise.
  • a water soluble / dispersible cleaning sachet for use in a washing operation, characterised in that the sachet has a mass of between Ig and 15g such that it can be used singularly or with one or more other like sachets depending upon a required washing performance .
  • the sachet may, for example, be formed of a film.
  • the film may be a single film, or a laminated film as disclosed in GB-A-2,244,258.
  • the thickness of the film may be up to 2mm, more prefera- bly up to 1mm, more preferably 40 to 300 ⁇ m, more preferably 60 to 200 ⁇ m, especially 60 to 160 ⁇ m, more especially 60 to 150 ⁇ m and most especially 60 to 150 ⁇ m.
  • the film may be produced by any process, for example by extrusion and blowing or by casting.
  • the film may be un- oriented, monoaxially oriented or biaxially oriented. If the layers in the film are oriented, they usually have the same orientation, although their planes of orientation may ⁇ be different if desired.
  • the layers in a laminate may be the same or different. Thus they may each comprise the same polymer or a different polymer .
  • PVOH poly (vinyl alcohol)
  • HPMC hydroxypropyl methyl cellulose
  • gelatin gelatin
  • PVOH poly (vinyl alcohol)
  • HPMC hydroxypropyl methyl cellulose
  • An example of a preferred PVOH is ethoxylated PVOH.
  • the PVOH may be partially or fully alcoholised or hydrolysed. For example it may be from 40 to 100%, preferably from 70 to 92%, more preferably about 88% or about 92%, alcoholised or hydrolysed.
  • the degree of hydrolysis is known to influence the temperature at which the PVOH starts to dissolve in water. 88% hydrolysis corresponds to a film soluble in cold (i.e. room temperature) water, whereas 92% hydrolysis corresponds to a film soluble in warm water.
  • the sachet may be formed by, for example, vacuum forming or thermoforming .
  • the film in a thermoforming process the film may be drawn down or blown down into a mould.
  • the film is heated to the thermoforming temperature using a thermoforming heater plate assembly, and then drawn down under vacuum or blown down under pressure into the mould.
  • Plug-assisted thermoforming and pre- stretching the film for example by blowing the film away from the mould before thermoforming, may, if desired, be used.
  • One skilled in the art can choose an appropriate temperature, pressure or vacuum and dwell time to achieve an appropriate sachet .
  • the amount of vacuum or pressure and the thermoforming temperature used depend on the thickness and porosity of the film and on the polymer or mixture of polymers being used.
  • Thermoforming of PVOH films is known and described in, for example, WO 00/55045.
  • a suitable forming temperature for PVOH or ethoxylated PVOH is, for example, from 90 to 130 0 C, especially 90 to 120 0 C.
  • a suitable forming pressure is, for example, 69 to 138kPa (10 to 20 p.s.i.), especially 83 to 117 kPa (12 to 17 p.s.i.) .
  • a suitable forming vacuum is 0 to 4 kPa (0 to 40 mbar) , especially 0 to 2 kPa (0 to 20 mbar) .
  • a suitable dwell time is, for example, 0.4 to 2.5 seconds, especially 2 to 2.5 seconds.
  • the sachet may be in the form of a solid body. That is to say the sachet is not in the form of a walled container but instead a shape, which is substantially solid (option- ally with pores / apertures) .
  • the solid preferably comprises a matrix.
  • the matrix may be formed of the material used for the film of the sachet or alternatively the matrix may comprise a second material .
  • Preferred matrix forming materials include gelatin, especially in an admix- ture with glycerine, optionally with water.
  • a further preferred matrix forming material is polyethylene glycol (PEG) having a molecular mass of 3000 or above, e.g. such as 6000, 8000, 20000, 35000 or 8 million. Generally the sachet has the dimensions of between 5 and 50mm.
  • the sachet has a mass of no more than 14g, more preferably no more than 13g, more preferably no more than 12g, more preferably no more than Hg, still more preferably no more than 1Og.
  • the sachet may have a mass of no more than 9g, for example of no more than 8g, 7g, 6g, or 5g.
  • the sachet has a mass of at least 2g, more preferably at least 3g.
  • the sachet may have a mass of at least 4g, for example at least 5g, 6g, 7g or 8g.
  • the cleaning sachet comprises a cleaning composition.
  • the cleaning sachet may comprise a water-softening sachet which comprises a cleaning composition comprising a water-softening composi- tion.
  • the cleaning composition may be in the form of a solid (powders, granulates, tablets) or a liquid (including gels) or an admixture of both.
  • the cleaning composition may be made up of two or more separate compositions. In this case the sachet generally has separate compartments, with each compartment containing a composition.
  • the cleaning sachet comprises a sachet for use in an automatic ware washing machine.
  • the cleaning sachet comprises a sachet for use in an automatic dishwashing machine.
  • the deter- gent sachet may be arranged to be used in combination with a separate supply of dishwasher salt and/or rinse aid.
  • the sachet may be substantially free from rinse aid function and/or dishwasher salt function.
  • cleaning composition is understood in the broad sense in the present application, namely as comprising all those substances and mixtures of substances which can be used in connection with cleaning processes. These include not only the compositions which are actually active in cleaning, such as detergents, for example dishwasher detergents, and washing substances, but all compositions which support cleaning functions concerned, such as water softeners, or which have the effect of providing protec- tive care, such as fabric treaters or final rinses.
  • cleaning composition are mixtures of ingredients selected from: surfactant, builder, filler, bleach (optionally containing also bleach activator and/or a bleach catalyst) , water-softening composition and enzymes.
  • the cleaning composition may contain other minor ingredients such as dye, fragrance and optical bright- eners .
  • water-softening composition we mean a mixture of a water-softening active (s) with other compounds selected from those mentioned in the previous paragraph, or elsewhere in this specification.
  • the cleaning composition comprises a detergent composition.
  • the cleaning composition may comprise a detergent composition together with other components which support a cleaning function.
  • the cleaning composition may consist essentially of a detergent composition.
  • detergent composition is under- stood to comprise all those substances and mixtures of substances which are active in cleaning, such as detergents and washing substances.
  • detergent composition mixtures of ingredients selected from: surfactant, builder, filler, bleach (optionally containing also bleach activator and/or a bleach catalyst) and enzymes.
  • the detergent composition may be substantially free of components which support cleaning functions, such as water-softeners, or which have the effect of providing protective care, such as fabric softeners or final rinses (rinse aids) .
  • the sachet comprises a detergent composition in an amount of from Ig to 12g, preferably an amount of from 2g to 8g, for example an amount of from 3g to 6g.
  • the sachet comprises detergent composition in an amount of no more than 12g, preferably no more than Hg, more preferably no more than 1Og, for example no more than 9g, 8g, 7g, 6g, 5g, 4g, 3g or 2g.
  • the sachet comprises a detergent composition in an amount of at least Ig, preferably at least 2g, for example at least 3g, 4g, 5g, 6g, 7g or 8g.
  • the sachet may comprise a "mono-benefit" sachet.
  • the sachet may comprise a single-function sachet for use in an automatic dish washer.
  • at least 90% by weight of the cleaning composition may comprise detergent composi- tion and the cleaning composition may preferably consist essentially of a detergent composition, which may suitably comprise fillers in addition to the active components.
  • the sachet has a mass of between Ig and 7g, pref- erably of between 2g and 6g, more preferably between 3g and 5g, for example around 4g.
  • the sachet has a mass of between 5g and 13g, preferably between 7g and Hg, more preferably between 8g and 1Og, for example around 9g.
  • the cleaning composition comprises detergent composition which comprises a substantially complete formulation for its respective use. Accordingly, it is suitably not necessary to employ a number of sachets according to the present invention comprising different compositions. Difficulties associated with a consumer having to count out a selection of different sachets may thus be avoided.
  • the sachet is free from phosphorus-containing compounds .
  • the cleaning sachets of the present invention may have a number of advantages compared to known larger sachets.
  • the sachet As the sachet is smaller than known sachets it comprises less detergent and thus if a single sachet is used in a wash cycle of an automatic dishwashing machine there will be less release of detergent composition into the waterways.
  • the use of a single sachet in a ware washing machine of the floor standing type may be appropriate to wash a small load or if the load is lightly soiled and thus the use of sachets accordingly to the present invention may provide significant environmental benefits.
  • Sachets according to the present invention may also be "multi-dosed" .
  • one sachet could be used with the environmental advantage as described above.
  • two sachets may be used.
  • three sachets may be used.
  • a consumer may be provided with the flexibility to vary the amount of detergent used in an automatic dishwashing machine, particularly in a machine of the floor standing type, without having to expend the time and energy associated with using powder or granular detergents .
  • the use of two like sachets of the present invention may be more effective than the use of a known sachet having the same formulation as the sachets of the present invention and a weight equal to the combined weight of said two sachets of the present invention.
  • the sachets according to the present invention may also retain the benefits that those known sachets have over powder or granular detergent compositions.
  • Sachets according to the present invention may be less susceptible to breakage / rupture and may be more easily removed from a machine chamber and distributed in a dish washing machine than known sachets.
  • the starting material for the cleaning sachets of the in- vention may be formulated in the same way as conventional powders, granules or sachets.
  • a suitable formulation for a sachet composition may therefore comprise a large number of different ingredients, which may include any of the following: builders, surfactants, enzymes, bleaches, bleach activators, sources of alkalinity, dyes, perfumes, disintegrants, dispersants for lime soaps, organic polymers, including polymers to inhibit colour transfer, crystal growth inhibitors, complexing agents for heavy metal ions, salts, enzyme stabilisers, corrosion inhibitors, solvents, fabric softeners, optical brighteners, hydro- tropic agents, etc.
  • the sachet composition may contain suitable fillers, such as sulphates and chlorides.
  • the sachets may also contain a scattering agent or effervescent system, such as a combination of bicarbonate of soda and citric acid, in order to support the rapid disso- lution of the sachets, especially when poorly soluble ingredients are included.
  • a scattering agent or effervescent system such as a combination of bicarbonate of soda and citric acid
  • the sachet is for use in laundry washing, it may typi- cally comprise, for example, a bleach, stain remover, water-softener, enzyme or fabric conditioner, in addition to the cleaning composition.
  • the sachet may be designed to release components at different times during the laundry wash.
  • a bleach or fabric conditioner is gen- erally released at the end of a wash, and a water-softener is generally released at the start of a wash.
  • An enzyme may be released at the start or the end of a wash.
  • the sachet may comprise, for example, a water-softener, salt, enzyme, rinse aid, bleach or bleach activator.
  • the sachet may be designed to release the components at different times during the wash cycle. For example, a rinse aid, bleach or bleach activator is generally released at the end of a wash, and a wa- ter-softener, salt or enzyme is generally released at the start of a wash.
  • water-softening particulates which may be used in sachets according to the present invention include:
  • citrate salts for example alkali metal citrates, and especially sodium citrate.
  • a compound of class A) and a compound of class B) are both present in a water-softening composition.
  • Additional beneficial compounds in a water-softening com- position include one or more of:
  • ion exchange agents including alkali metal (preferably sodium) aluminosilicates, either crystalline, amorphous or a mixture of the two;
  • ion capture agents - agents which prevent metal ions from forming insoluble salts or reacting with surfactants, such as polyphosphate, monomeric polycarbonates, such as citric acid or salts thereof, EDTA, algins, alginates; and
  • anti-nucleating agents - agents which prevent seed crystal growth such as polycarbonate polymers, such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphonates, and sulfonates.
  • the components of a cleaning sachet depend on its intended use.
  • the sachet may contain surface active agents such as an anionic, non-ionic, cationic, amphoteric or zwitterionic surface active agents or mixtures thereof.
  • anionic surfactants are straight-chained or branched alkyl sulfates and alkyl polyalkoxylated sulfates, also known as alkyl ether sulfates. Such surfac- tants may be produced by the reaction of sulfates with higher (e.g. C 8 -C 2O ) fatty alcohols.
  • primary alkyl sulfate surfactants are those of formula:
  • R is a linear C 8 -C 2 O hydrocarbyl group and M is a water-solubilising cation.
  • R is Ci 0 -Ci 6 alkyl, for example Ci 2 -Ci 4
  • M is alkali metal such as lithium, sodium or potassium.
  • secondary alkyl sulfate surfactants are those which have the sulfate moiety on a "backbone" of the molecule, for example those of formula:
  • n and n are independently 2 or more, the sum of m+n typically being 6 to 20, for example 9 to 15, and M is a water-solubilising cation such as lithium, sodium or po- tassium.
  • Especially preferred secondary alkyl sulfates are the (2,3) alkyl sulfate surfactants of formulae:
  • alkoxylated alkyl sulfates are ethoxylated al- kyl sulfates of the formula:
  • R is a C 8 -C 2O alkyl group, preferably C 10 -Ci 8 such as a Ci 2 -Ci 6
  • n is at least 1, for example from 1 to 20, preferably 1 to 15, especially 1 to 6
  • M is a salt- forming cation such as lithium, sodium, potassium, ammo- nium, alkylammonium or alkanolammonium.
  • alkyl sulfates and alkyl ether sulfates will generally be used in the form of mixtures comprising varying alkyl chain lengths and, if present, varying degrees of alkoxy- lation.
  • anionic surfactants which may be employed are salts of fatty acids, for example C 8 -Ci 8 fatty acids, especially the sodium or potassium salts, and alkyl, for example C 8 - Ci ⁇ , benzene sulfonates.
  • non-ionic surfactants are fatty acid alkoxy- lates, such as fatty acid ethoxylates, especially those of formula :
  • R is a straight or branched C 8 -Ci 6 alkyl group, preferably a Cg-Ci 5 , for example Ci 0 -Ci 4 , alkyl group and n is at least 1, for example from 1 to 16, preferably 2 to 12, more preferably 3 to 10.
  • the alkoxylated fatty alcohol non-ionic surfactant will frequently have a hydrophilie-lipophilic balance (HLB) which ranges from 3 to 17, more preferably from 6 to 15, most preferably from 10 to 15.
  • HLB hydrophilie-lipophilic balance
  • fatty alcohol ethoxylates are those made from alcohols of 12 to 15 carbon atoms and which contain about 7 moles of ethylene oxide. Such materials are commercially marketed under the trademarks NEODOL 25-7 and NEODOL 23-6.5 by Shell Chemical Company.
  • Other useful compounds of this type include NEODOL 1-5, an ethoxylated fatty alcohol averaging 11 carbon atoms in its alkyl chain with about 5 moles of ethylene oxide; NEODOL 23-9, an ethoxylated primary C 12 -Ci 3 alcohol having about 9 moles of ethylene oxide; and NEODOL 91-10, an ethoxylated C 9 -Cn primary alcohol having about 10 moles of ethylene oxide.
  • DOBANOL 91-5 is an ethoxylated C 9 -Cn fatty alcohol with an average of 5 moles ethylene oxide
  • DOBANOL 25-7 is an ethoxylated Ci 2 -Ci 5 fatty alcohol with an average of 7 moles of ethylene oxide per mole of fatty alcohol.
  • Suitable ethoxylated alcohol non-ionic surfactants include TERGITOL 15-S-7 and TERGITOL 15-S-9, both of which are linear secondary alcohol ethoxylates available from Union Carbide Corporation.
  • TERGITOL 15-S-7 is a mixed ethoxylated product of a Cn-Ci 5 linear secon- dary alkanol with 7 moles of ethylene oxide and TERGITOL 15-S-9 is the same but with 9 moles of ethylene oxide.
  • Suitable alcohol ethoxylated non-ionic surfactants are NEODOL 45-11, which is a similar ethylene oxide condensation products of a fatty alcohol having 14-15 carbon atoms and the number of ethylene oxide groups per mole being about 11. Such products are also available from Shell Chemical Company.
  • Non-ionic surfactants are, for example, Ci 0 -Ci 8 al- kyl polyglycosides, such as Ci 2 -Ci 6 alkyl polyglycosides . These are especially useful when high foaming compositions are desired.
  • Further surfactants are polyhydroxy fatty acid amides, such as Ci 0 -Ci 8 N- (3-methoxypropyl) glycamides and ethylene oxide-propylene oxide block polymers of the Pluronic type.
  • cationic surfactants are those of the quater- nary ammonium type.
  • the total content of surfactants in the sachet is desirably 60 to 95 wt%, especially 75 to 90 wt%.
  • an anionic surfactant is present in an amount of 50 to 75 wt%
  • the nonionic surfactant is present in an amount of 5 to 50 wt%
  • the cationic surfactant is present in an amount of from 0 to 20 wt%, by weight of sachet.
  • the sachets may also independently comprise enzymes, such as protease, lipase, amylase, cellulase and peroxidase enzymes.
  • enzymes are commercially available and sold, for example, under the registered trade marks ESPERASE, ALCALASE and SAVINASE by Nova Industries A/S and MAXATASE by International Biosynthetics, Inc.
  • the enzymes are independently present in the sachets in an amount of from 0.5 to 3 wt%, especially 1 to 2 wt%, when added as commercial preparations they are not pure and this represents an equivalent amount of 0.005 to 0.5 wt% of pure enzyme. As mentioned above they can be incorporated after extrusion if wished.
  • the sachets may, if desired, comprise a thickening agent or gelling agent.
  • Suitable thickeners are polyacrylate polymers such as those sold under the trade mark CARBOPOL, or the trade mark ACUSOL by Rohm and Haas Company.
  • Other suitable thickeners are xanthan gums.
  • the thickener if present, is generally present in an amount of from 0.2 to 4 wt%, especially 0.5 to 2 wt%.
  • Sachets used in dishwashing independently usually comprise a detergency builder.
  • the builders counteract the effects of calcium, or other ion, water hardness.
  • examples of such materials are citrate, succinate, malonate, carboxy- methyl succinate, carboxylate, polycarboxylate and polya- cetyl carboxylate salts, for example with alkali metal or alkaline earth metal cations, or the corresponding free acids.
  • Specific examples are sodium, potassium and lithium salts of oxydisuccinic acid, mellitic acid, benzene polycarboxylic acids, Ci 0 -C 22 fatty acids and citric acid.
  • organic phosphonate type sequestering agents such as those sold by Monsanto under the trade mark DEQUEST and alkylhydroxy phosphonates .
  • Citrate salts and Ci 2 -Ci 8 fatty acid soaps are preferred.
  • Further builders are: phosphates such as sodium, potassium or ammonium salts of mono-, di- or tri-poly or oligo-phosphates; zeo- lites; silicates, amorphous or structured, such as sodium, potassium or ammonium salts .
  • Suitable builders are polymers and copolymers known to have builder properties.
  • such materials include appropriate polyacrylic acid, polymaleic acid, and polyacrylic/polymaleic and copolymers and their salts, such as those sold by BASF under the trade mark SOKALAN.
  • the builder is desirably present in an amount of up to 90 wt%, preferably 15 to 90 wt%, more preferably 15 to 75 wt%, relative to the total weight of the sachet. Further details of suitable components are given in, for example, EP-A-694,059, EP-A-518,720 and WO 99/06522.
  • the sachets can also optionally comprise one or more additional ingredients.
  • additional ingredients include conventional cleaning composition components such as further surfactants, bleaches, bleach enhancing agents, builders, suds boosters or suds suppressors, anti-tarnish and anti-corrosion agents, organic solvents, co-solvents, phase stabilisers, emulsifying agents, preservatives, soil suspending agents, soil release agents, germicides, pH adjusting agents or buffers, non-builder alkalinity sources, chelating agents, clays such as smectite clays, enzyme stabilizers, anti- limescale agents, colourants, dyes, hydrotropes, dye transfer inhibiting agents, brighteners, and perfumes. If used, such optional ingredients will generally constitute no more than 10 wt%, for example from 1 to 6 wt%, of the total weight of the sachets.
  • Sachets which comprise an enzyme may optionally contain materials which maintain the stability of the enzyme.
  • enzyme stabilizers include, for example, polyols such as propylene glycol, boric acid and borax. Combinations of these enzyme stabilizers may also be employed. If utilized, the enzyme stabilizers generally constitute from 0.1 to 1 wt% of the sachets.
  • Preferred dishwashing sachets are adapted to be used in automatic dish washing machines. Due to their specific requirements specialised formulation is required and these are illustrated below.
  • Amounts of the ingredients can vary within wide ranges, however preferred automatic dishwashing cleaning composition sachets herein (which typically have a 1% aqueous solution pH of above 8, more preferably from 9.5 to 12, most preferably from 9.5 to 10.5) are those wherein there is present: from 5% to 90%, preferably from 5% to 75%, of builder; from 0.1% to 40%, preferably from 0.5% to 30%, of bleaching agent; from 0.1% to 15%, preferably from 0.2% to 10%, of the surfactant system; from 0.0001% to 1%, pref- erably from 0.001% to 0.05%, of a metal-containing bleach catalyst; and from 0.1% to 40%, preferably from 0.1% to 20% of a water-soluble silicate.
  • Such fully-formulated embodiments typically further comprise from 0.1% to 15% of a polymeric dispersant, from 0.01% to 10% of a chelant, and from 0.00001% to 10% of a detersive enzyme, though further additional or adjunct ingredients may be present.
  • Non-ionic surfactants useful in ADW (Automatic Dish Washing) sachets of the present invention desirably include surfactant (s) at levels of from 1% to 10% of the composition.
  • surfactant s
  • bleach-stable surfactants are preferred.
  • Non-ionic surfactants generally are well known, being described in more detail in Kirk Othmer ⁇ s Encyclopedia of Chemical Technology, 3rd Ed., Vol. 22, pp. 360-379, "Surfactants and Detersive Systems", incorporated by reference herein.
  • an ADW sachet comprises at least one non-ionic surfactant.
  • One class of non-ionics are ethoxylated non- ionic surfactants prepared by the reaction of a monohy- droxy alkanol or alkylphenol with 6 to 20 carbon atoms with preferably at least 12 moles, particularly preferably at least 16 moles, and still more preferably at least 20 moles of ethylene oxide per mole of alcohol or alkylphenol .
  • non-ionic surfactants are formed from a linear chain fatty alcohol with 16-20 carbon atoms and at least 12 moles, particularly preferably at least 16 moles, and still more preferably at least 20 moles, of ethylene oxide, per mole of alcohol.
  • the non-ionic surfactant may additionally comprise propylene oxide (PO) units in the molecule.
  • PO propylene oxide
  • the PO units constitute up to 25% by weight, preferably up to 20% by weight and still more preferably up to 15% by weight of the overall molecular weight of the non-ionic surfactant.
  • Particularly preferred surfactants are ethoxylated mono- hydroxy alkanols or alkylphenols, which additionally comprises polyoxyethylene-polyoxypropylene block copolymer units.
  • the alcohol or alkylphenol portion of such surfactants constitutes more than 30%, preferably more than 50%, more preferably more than 70% by weight of the overall molecular weight of the non-ionic surfactant.
  • Another class of non-ionic surfactants includes reverse block copolymers of polyoxyethylene and polyoxypropylene and block copolymers of polyoxyethylene and polyoxypropylene initiated with trimethylolpropane .
  • Another preferred non-ionic surfactant can be described by the formula:
  • JR 1 represents a linear or branched chain aliphatic hydrocarbon group with 4-18 carbon atoms or mixtures thereof
  • R 2 represents a linear or branched chain aliphatic hydrocarbon rest with 2-26 carbon atoms or mixtures thereof
  • x has a value between 0.5 and 1.5
  • y has a value of at least 15.
  • Another group of preferred nonionic surfactants are the end-capped polyoxyalkylated non-ionics of formula:
  • R 1 and R 2 represent linear or branched chain, saturated or unsaturated, aliphatic or aromatic hydrocar- bon groups with 1-30 carbon atoms
  • R 3 represents a hydrogen atom or a methyl, ethyl, n-propyl, iso-propyl, n- butyl, 2 -butyl or 2 -methyl -2 -butyl group
  • x has a value between 1 and 30 and
  • k and j have values between 1 and 12, preferably between 1 and 5.
  • R 1 and R 2 are preferably linear or branched chain, saturated or unsaturated, aliphatic or aromatic hydrocarbon groups with 6-22 carbon atoms, where groups with 8 to 18 carbon atoms are particularly preferred.
  • group R 3 H methyl or ethyl are particularly preferred.
  • Particularly preferred values for x are from 1 and 20, preferably from 6 to 15.
  • each R 3 in the formula can be different.
  • the value 3 for x is only an example and bigger values can be chosen whereby a higher number of variations of (EO) or (PO) units would arise.
  • mixtures of different non-ionic surfactants is particularly preferred in ADW formulations for example mixtures of alkoxylated alcohols and hydroxy group containing alkoxylated alcohols.
  • a sachet disintegrant could be present in the sachets, for example a water-swellable cellulosic compound.
  • a cleaning sachet of the invention may be used in a vari- ety of ways.
  • a dishwasher detergent as a final rinse in dishwashers, as a detergent in a washing machine or for a hand wash, as a water softener or fabric softening rinse in a washing ma- chine, or as a descaling agent.
  • Other fields of use in the detergent sector are conceivable and possible, such as use as a detergent composition for dissolution in water, for cleaning hard surfaces, such as floors.
  • the sachet is arranged such that N sachets can be employed in a washing method to wash a load which substantially corresponds to a full load of a ware washing machine, and which load has a normal level of soiling, wherein N is 1, 2, 3 or 4.
  • N is 2 for an automatic dishwasher of the floor standing type.
  • the sachet is arranged such that the number of sachets employed in the washing method can be adjusted as detailed in the second aspect which follows.
  • a method of performing a washing operation characterised in that the method employs one or more sachets according to the first aspect and a quantity of water.
  • sachets of the present invention are much smaller than conventional commercial detergent sachets they can be accommodated much more eas- ily in a sachet dispenser. This has been found to be of particular significance when a high amount of cleaning agent (i.e. a high number of cleaning sachets is required) .
  • a suggested reason for this effect is that a large number of small sachet may be accommodated much more easily in a sachet dispenser than one larger sachet due to flexibility in positioning. For example it has been found to be easier to accommodate three sachets of weight 9g than one large sachet of weight 27g.
  • the sachets comprise a detergent composition.
  • the sachets are substantially identical .
  • the method comprises washing articles in an automatic ware washing machine. More preferably the method comprises washing articles, for example crockery, within an automatic dishwashing machine.
  • the method comprises the step of determining whether one or more sachets are required depending on the level of soiling and the quantity of articles to be washed.
  • the method will use N sachets.
  • N 1 to 4.
  • the method will use N + A sachets.
  • A 0 to 2.
  • A is > 0 and ⁇ (N - 1) .
  • for a domestic dish washer of the floor standing type A I or 2, preferably 1.
  • the method will use N - B sachets.
  • B 0 to 2.
  • B is > 0 and ⁇ (N - 1) .
  • B 1 or 2, preferably 1.
  • the method will use N - C sachets.
  • C 0 to 2.
  • C is > 0 and ⁇ (N - 1) .
  • C I or 2 , preferably 1.
  • A, B and C have fixed values.
  • A, B and C have the same value.
  • variation of the u dose" of sachets may thus be simple for a user to perform.
  • N For a domestic dish washer of the table top type N may be 1 or 2, suitably 1.
  • B and C are 0.
  • A may also be 0. Whilst it may thus not be possible to vary the "dose" in the same manner this may not be problematic since such a dishwasher is, for example, less likely to be operated part loaded.
  • the determination step comprises a user noting the extent of soiling of the articles to be washed, noting the extent to which a machine is loaded and determining whether N sachets should be used or if an adjustment needs to be made.
  • a value for N will be provided with the sachets.
  • a user will use a value for A, B or C provided with the sachets.

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

Abstract

La présente invention concerne des sachets de détergent solubles/dispersibles dans l’eau utilisés lors d’une opération de lavage. Les sachets se caractérisent en ce que chacun d’eux possède une masse comprise entre 1 g et 15 g, lui permettant ainsi d’être utilisé seul ou bien avec un ou plusieurs autres sachets analogues en fonction de la performance de nettoyage requise. L’invention a également trait à des procédés de nettoyage utilisant les sachets.
PCT/GB2006/002399 2005-07-08 2006-06-29 Article de nettoyage et procédé de nettoyage WO2007007031A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0514009.0A GB0514009D0 (en) 2005-07-08 2005-07-08 Article and method
GB0514009.0 2005-07-08

Publications (1)

Publication Number Publication Date
WO2007007031A1 true WO2007007031A1 (fr) 2007-01-18

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Application Number Title Priority Date Filing Date
PCT/GB2006/002399 WO2007007031A1 (fr) 2005-07-08 2006-06-29 Article de nettoyage et procédé de nettoyage

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AT (1) AT502111A1 (fr)
DE (2) DE102006031367A1 (fr)
GB (2) GB0514009D0 (fr)
LU (1) LU91261B1 (fr)
WO (1) WO2007007031A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108342258A (zh) * 2017-01-25 2018-07-31 花王株式会社 液体清洁剂组合物
US11464384B1 (en) 2022-03-31 2022-10-11 Techtronic Cordless Gp Water soluable package for a floor cleaner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115292A (en) * 1977-04-20 1978-09-19 The Procter & Gamble Company Enzyme-containing detergent articles
US4253842A (en) * 1974-05-15 1981-03-03 Colgate-Palmolive Company Detergent compositions and washing methods including and utilizing separate tablets of components
EP0700989A1 (fr) * 1994-09-12 1996-03-13 The Procter & Gamble Company Détergent emballé par dose
WO2002016541A1 (fr) * 2000-08-25 2002-02-28 Reckitt Benckiser N.V. Emballages hydrosolubles a compositions liquides
EP1256622A1 (fr) * 2001-05-08 2002-11-13 The Procter & Gamble Company Kit de lavage de vaisselle a la main
US20040144065A1 (en) * 2002-10-09 2004-07-29 Smith David John Pouch manufacture and uses

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2305931A (en) * 1995-10-02 1997-04-23 Burman Mueller Frances Honor Dissolvable container
US7022656B2 (en) * 2003-03-19 2006-04-04 Monosol, Llc. Water-soluble copolymer film packet
EP1679362A1 (fr) * 2005-01-10 2006-07-12 The Procter & Gamble Company Composition de nettoyage pour machines de vaisselle ou de lavage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253842A (en) * 1974-05-15 1981-03-03 Colgate-Palmolive Company Detergent compositions and washing methods including and utilizing separate tablets of components
US4115292A (en) * 1977-04-20 1978-09-19 The Procter & Gamble Company Enzyme-containing detergent articles
EP0700989A1 (fr) * 1994-09-12 1996-03-13 The Procter & Gamble Company Détergent emballé par dose
WO2002016541A1 (fr) * 2000-08-25 2002-02-28 Reckitt Benckiser N.V. Emballages hydrosolubles a compositions liquides
EP1256622A1 (fr) * 2001-05-08 2002-11-13 The Procter & Gamble Company Kit de lavage de vaisselle a la main
US20040144065A1 (en) * 2002-10-09 2004-07-29 Smith David John Pouch manufacture and uses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108342258A (zh) * 2017-01-25 2018-07-31 花王株式会社 液体清洁剂组合物
US11464384B1 (en) 2022-03-31 2022-10-11 Techtronic Cordless Gp Water soluable package for a floor cleaner

Also Published As

Publication number Publication date
DE102006031367A1 (de) 2007-03-29
GB2428683A (en) 2007-02-07
DE202006010472U1 (de) 2006-10-12
LU91261B1 (en) 2007-01-09
GB0613022D0 (en) 2006-08-09
AT502111A1 (de) 2007-01-15
GB0514009D0 (en) 2005-08-17

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