EP0518870B1 - Flüssige waschmittel - Google Patents

Flüssige waschmittel Download PDF

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Publication number
EP0518870B1
EP0518870B1 EP91902945A EP91902945A EP0518870B1 EP 0518870 B1 EP0518870 B1 EP 0518870B1 EP 91902945 A EP91902945 A EP 91902945A EP 91902945 A EP91902945 A EP 91902945A EP 0518870 B1 EP0518870 B1 EP 0518870B1
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EP
European Patent Office
Prior art keywords
weight
bleach
liquid detergent
aqueous liquid
materials
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EP91902945A
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English (en)
French (fr)
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EP0518870A1 (de
Inventor
Johannes Cornelis Van De Pas
Johannes Herman Maria DRÖGE
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Unilever PLC
Unilever NV
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Unilever PLC
Unilever NV
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/001—Softening compositions
    • C11D3/0015—Softening compositions liquid
    • 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
    • C11D3/3947—Liquid compositions

Definitions

  • the present invention is concerned with aqueous liquid detergent compositions.
  • the present invention relates to liquid detergent compositions for the washing of fabrics which contain a peroxygen bleach compound.
  • EP-A-0 301 882 discloses aqueous structured liquid detergent compositions comprising actives, electrolytes, polymer materials. Clay materials and bleach materials may optionally be present; the combination of a softening material and a particulate water-soluble bleach is not suggested.
  • US 4,430,236 discloses low pH single phase aqueous liquid laundry products containing a hydrogen peroxide bleach and nonionic surfactants. Cationic surfactants may be included for providing softening properties.
  • EP 160 342 discloses low pH aqueous liquid bleaching compositions comprising solid organic peroxy acid, surfactant and electrolyte. Cationic surfactants may be included.
  • compositions in accordance to the invention can be formulated in a broad pH range, especially at alkaline pH values, and may contain a broad range of fabric softening ingredients in combination with bleach materials other than hydrogen peroxide and organic peroxyacids.
  • an alkaline aqueous liquid detergent composition comprising:
  • compositions according to the present invention comprise a peroxygen bleach which is not or only partly present in the system in solubilised form, the remaining part being present as solid peroxygen particles which are suspended in the system.
  • a peroxygen bleach which is not or only partly present in the system in solubilised form, the remaining part being present as solid peroxygen particles which are suspended in the system.
  • at least 80 % by weight, more preferably more than 90 %, more preferably from 98 to 100 % of the bleach is present in undissolved form.
  • the weight average diameter of the undissolved bleach particles is from 0.5 to 100 micrometer, especially 5 to 60 micrometer.
  • a method for obtaining these small particles is described in EP 294 904.
  • One way of ensuring that the bleach is present in undissolved form is to increase the amount of electrolyte in the composition, therewith reducing the solubility of the bleach component in the system.
  • Suitable electrolytes for this purpose are for instance the at least partially water soluble carbonate, sulphate and halogenide salts and metaborate.
  • Other preferred electrolytes are salting out electrolytes.
  • salting out electrolyte has the same meaning as in EP 79 646, namely those electrolytes which have a lyotropic number of less than 9.5.
  • the dissolved part of the electrolyte constitutes preferably more than 2 % by weight of the composition, more preferred more than 5% by weight, especially preferred between 10 and 50 % by weight.
  • Suitable peroxygen compounds include the perborates, persulfates, peroxy disulfates, perphosphates and the crystalline peroxyhydrates formed by reacting hydrogen peroxide with urea or alkali metal carbonate. Also encapsulated bleaches may be used.
  • the bleach component is added in an amount corresponding to 0.1 to 15% by weight of the composition of active oxygen, more preferred from 0.5 to 5% active oxygen, typically from 1.0 to 3.0 % active oxygen.
  • bleaches such as perborate (preferably perborate-tetrahydrate) and percarbonate bleaches.
  • perborate preferably perborate-tetrahydrate
  • percarbonate bleaches Preferably these bleaches are used in an amount of from 5 to 40 % by weight of the composition, more preferably from 10 to 30%.
  • the bleach ingredients may for example be added to the composition as a dry particulate material or as a predispersion of bleach particles. If perborate-tetrahydrate bleaches are used, a suitable commercial available bleach dispersion is Proxsol® (ex ICI), alternatively perborate-tetrahydrate crystals may be formed in-situ for example as described in EP 294 904.
  • the present invention seeks to provide liquid detergent compositions which contain a bleach ingredient and which are capable of providing softness to fabrics to overcome the inconvenience of using separate products for in-therinse softening
  • EP 225 142 (UNILEVER) proposes to use a fabric softening clay material having a limited swellability.
  • EP 291 261 (UNILEVER) describes the use of fabric softening clay material in combination with non-peptising/non-building electrolytes such as sodium formates, chloride or sulphate.
  • EP 213 730 proposes to provide the desired softening in the wash, by combining a detergent active material, a fabric softening agent and specific low gel-point cellulose ether derivatives. These specific cellulose ethers are capable of enhancing fabric softening in the wash step.
  • EP 265 187 discloses the use of imidazoline particles having an average particle diameter of from about 20 to 200 micrometer for softening-in-the wash.
  • EP 294 893 discloses the use of imidazoline-anionic surfactant ion-pair/wax composites as fiber- and fabric conditioning agent.
  • EP 294 894 discloses the similar use of amine-anionic ion pair/wax composites having a particle size of 1 to 1000 nanometer in liquid compositions.
  • Suitable fabric softening clays include low, medium or high swelling clays.
  • suitable clay materials are Hectorites/ Na Bentonites, for example BENTONE EW® and CLARSOL W100®; Ca Bentonites, for example CLARSOL KC1®, MDO 77/84®, LAUNDROSIL DG®, LAPORTE CP 103® and MARMORA®, or their sodium carbonate activated forms; commercially sodium carbonate activated Ca Bentonite, for example CLARSOL KC2®, MDO 81/84®, LAUNDROSIL DG AC® and DOKUM KARAKAYA®; acid activated Ca Bentonites, for example BENTONITE DC® and white bentonites, for example STREETLEY NO's 1® and 2®.
  • Other suitable clay materials are disclosed in the above mentioned British patent 1,400,898.
  • Suitable fabric softening clays are VOLCLAY SPV® (origin USA), SURREY NO. 1® (origin USA), EARTH® (origin UK), ENVIRONETICS® (origin Argentina), CULVIN® (origin South Africa), SAN FRAN® (origin Argentina), BERKBOND 1® (origin UK), STREETLEY WYOMING® (origin USA), MDO 77/84® and ECC® (ASB) (both origin Morocco), UBM® (origin Brasil), CSM® (high CEC Prassa) (origin Greece), GELLWHITE® (origin TEXAS USA) and WILLEMSE® (origin South Africa). Also hydrophobically modified clay materials may be used.
  • Preferred clay materials for use in compositions of the invention are montmorrilonite clays, more preferably bentonite clays, especially preferred white bentonite clays.
  • the amount of fabric softening clays in compositions of the invention is preferably from 0.1-25 %, more preferred from 0.5-15 %, most preferred from 1-10 % by weight of the composition, suitable amounts are for example about 2 % or about 3 % by weight.
  • Preferred fabric softening cellulose ether materials are nonionic substituted cellulose ethers having an HLB of between 3.1 and 4.3, a gel point of less than 58 °C, said cellulose ether material being substituted with C 1-3 alkyl and/or hydroxyalkyl groups.
  • the substituent groups are selected from the C 2 -C 3 alkyl and C 2 -C 3 mono- or polyhydric hydroxy alkyl groups, or combinations thereof.
  • alkyl hydroxyalkyl cellulose ethers is preferred.
  • Most preferred is the use of ethyl hydroxyethyl substituted cellulose ethers.
  • the choice and percentage of substituent groups has a direct influence on the HLB value of the cellulose ether.
  • a suitable method for determining the HLB value of cellulose ethers is the method as described for emulsifiers by J T Davies, 2nd Int Congress of Surface Activity 1957, I pp 426-439.
  • the cellulose ethers useful herein are polymers.
  • the gel point of polymers can be measured in a number of ways. In the present context the gel point is measured on a polymer solution prepared at 10 g/l concentration in deionised water by heating 50 ml solution placed in a beaker, with stirring, at a heating rate of approximately 5°C/minute. The temperature at which the solution clouds is the gel point of the cellulose ether being tested and is measured using a Sybron/Brinkmann colorimeter at 80% transmission/450 nm.
  • the degree of substitution (DS) of the anhydroglucose ring may be any value up to the theoretical maximum value of 3, but is preferably from about 1.7-2.9, there being a maximum of 3 hydroxyl groups on each anhydroglucose unit in cellulose.
  • the expression 'molar substitution' (MS) is sometimes also used in connection with these polymers and refers to the number of hydroxyalkyl substituents per anhydroglucose ring and may be more than 3 when the substituents themselves carry further substituents.
  • the most highly preferred polymers have an average number of anhydrogluclose units in the cellulose polymer, or weight average degree of polymerisation, from about 50 to about 1,200.
  • a number of cellulose ethers suitable for use in the present invention are commercially avaiable, as follows: Trade Name Gel point °C HLB (Davies) DS/MS alkyl/hydroxalkyl BERMOCOLL® CSTO35 35 3.40 )1.4 ethyl (ex Berol Nobel) )0.5 hydroxyethyl DVT® 88 004 37 3.11 )1.5 ethyl (ex Berol Nobel) )1.0 hydroxyethyl TYLOSE® MHB 1000 54 3.52 )2.0 methyl (ex Hoechst) )0.1 hydroxyethyl
  • the amount of cellulose ether to be employed in compositions according to the invention is preferably from 0.05 to 5%, more preferably from 0.5 to 3% by weight of the composition.
  • Preferred cellulose ethers for use in compositions of the present invention have an HLB of between 3.3 and 3.8 and a gel point of between 30 and 55°C. Especially preferred is the use of Bermocoll® CST035.
  • Preferred particles comprising a quaternary ammonium fabric softener and/or an amine softener material and/or an amphoteric fabric softener material are discrete composites of one or more conventional softening ingredients. Also lamellar droplets of fabric softening materials are considered as particles in accordance with the present invention; preferably however solid particles are used.
  • Suitable quaternary ammonium softeners, amines and amphoteric fabric softening ingredients are for example disclosed in EP 322 270.
  • the particles comprise an ion-pair softener complex such as for example an imidazoline-anionic surfactant ion-pair softener complex as disclosed in for example EP-A-0 294 893, or an amine-anionic ion pair softener complex as for example disclosed in EP 294 894.
  • the particles have a weight average particle size of 5 nanometer to 1000 micrometer, more preferred from 10 nanometer to 10 micrometer, most preferred from 50 nanometer to 5 micrometer.
  • the amount of fabric softening particles is from 1 to 25 % by weight of the composition, more preferred from 2 to 15 %, most preferred from 3 to 10 %.
  • compositions of the invention are aqueous liquid detergent compositions.
  • Aqueous detergent compositions comprise at least 10 % by weight of water, more preferably from 15 to 80 % of water, most preferably from 20 to 50 %.
  • Embraced within the scope of the present invention are so-called isotropic liquid detergent compositions, and anisotropic liquid detergent compositions.
  • compositions of the invention are structured liquid detergent compositions, such structured liquids can be "internally structured” whereby the structure is formed by primary ingredients and/or they can be structured by secondary additives such as certain cross-linked polyacrylates or clays, which can be added as "external structurants" to compositions of the invention.
  • Such structuring is very well known in the art and may be deliberately brought about to endow properties such as consumer preferred flow properties and/or turbid appearance.
  • Many structured liquids are also capable of suspending particulate solids such as detergency builders and abrasive particles.
  • lamellar droplets are called "spherulites".
  • the presence and identity of a surfactant structuring system in a liquid may be determined by means known to those skilled in the art for example, optical techniques, various rheometrical measurements, x-ray or neutron diffraction, and sometimes, electron microscopy.
  • Electrolyte may be only dissolved in the aqueous continuous phase or may also be present as suspended solid particles. Particles of solid materials which are insoluble in the aqueous phase may be suspended alternatively or in addition to any solid electrolyte particles.
  • the suspended solid can comprise suspended solids which are substantially the same as the dissolved electrolyte, being an excess of same beyond the solubility limit. This solid is usually present as a detergency builder, i.e. to counteract the effects of calcium ion water hardness in the wash.
  • the suspended solid usually comprises a particulate abrasive, insoluble in the system. In that case the electrolyte, present to contribute to the structuring of the active material in the dispersed phase, is generally different from the abrasive compounds. In certain cases, the abrasive can however comprise partially soluble salts which dissolve when the product is diluted.
  • the structure is usually used for thickening the product to give consumer-preferred flow properties, and sometimes to suspend pigment particles.
  • compositions of the first kind are described in for example our patent specification EP-A-38,101 whilst examples of those in the second category are described in our specification EP-104,452.
  • Those in the third category are for example, described in US 4,244,840.
  • the dispersed structuring phase in these liquids is generally believed to consist of an onion-like configuration comprising concentric bilayers of detergent active molecules, between which is trapped water (aqueous phase).
  • aqueous phase trapped water
  • lamellar droplets These configurations of active material are sometimes referred to as lamellar droplets.
  • the lamellar droplets are themselves a sub-set of lamellar structures which are capable of being formed in detergent active/aqueous electrolyte systems.
  • detergent compositions of the lamellar droplet type are preferred.
  • compositions of the invention also comprise one or more detergent active materials.
  • the detergent active materials in general, may comprise one or more surfactants, and may be selected from anionic, cationic, nonionic, zwitterionic and amphoteric species, and (provided mutually compatible) mixtures thereof.
  • they may be chosen from any of the classes, sub-classes and specific materials described in "Surface Active Agents” Vol. I, by Schwartz & Perry, Interscience 1949 and "Surface Active Agents" Vol.
  • Suitable nonionic surfactants include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • Specific nonionic detergent compounds are alkyl (C 6 -C 18 ) primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine.
  • Other so-called nonionic detergent compounds include long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulphoxides.
  • salting-out resistant active materials such as for example described in EP 328 177, especially the use of alkyl polyglycoside surfactants, such as for example disclosed in EP 70 074.
  • the level of nonionic surfactants is more than 1 % by weight of the composition, preferably from 2.0 to 20.0 %.
  • Suitable anionic surfactants are usually water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
  • suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulphates, especially those obtained by sulphating higher (C 8 -C 18 ) alcohols produced for example from tallow or coconut oil, sodium and potassium alkyl (C 9 -C 20 ) benzene sulphonates, particularly sodium linear secondary alkyl (C 10 -C 15 ) benzene sulphonates; sodium alkyl glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum; sodium coconut oil fatty monoglyceride sulphates and sulphonates; sodium and potassium salts of sulphuric acid esters of higher (C 8 -C 18 ) fatty alcohol-alkylene oxide, particularly ethylene oxide, reaction products; the reaction products of fatty acids such as coconut fatty acids esterified with isethionic acid and neutralised with sodium hydroxide; sodium and potassium salts of fatty acid amides of methyl
  • the level of the above mentioned non-soap anionic surfactant materials is from 1-40 % by weight of the composition.
  • the weight ratio of synthetic anionic surfactants to nonionic surfactants is from 10 : 1 to 1 : 10.
  • an alkali metal soap of a mono- or di-carboxylic acid especially a soap of an acid having from 12 to 18 carbon atoms, for example oleic acid, ricinoleic acid, and fatty acids derived from castor oil, rapeseed oil, groundnut oil, coconut oil, palmkernel oil, alk(en)yl succinates e.g. dodecyl succinates or mixtures thereof.
  • the sodium or potassium soaps of these acids can be used.
  • the level of soap in compositions of the invention is from 0-40 % by weight of the composition, more preferred from 1-30 %, most preferred 5-25 %.
  • the total detergent active material will be present at from 2% to 60% by weight of the total composition, for example from 5% to 40% and typically from 10% to 30% by weight.
  • one preferred class of compositions comprises at least 20%, most preferably at least 25% and especially at least 30% of detergent active material based on the weight of the total composition.
  • compositions according to the invention are preferably physically stable in that they yield no more than 2% by volume phase separation when stored at 25°C for 21 days from the time of preparation. Especially preferred are compositions which do not yield any phase separation upon storage for 21 days at 25 °C.
  • compositions according to the invention preferably have solid-suspending properties in that they yield less than 5 % by volume of sediment after storage for 21 days at 25°C, more preferably less than 2 % by volume sediment is formed, most preferably substantially no visible sediment is formed.
  • the bleach material will be solubilized in the form of peracid and/or hydrogen peroxide in the aqueous phase.
  • One of the problems sometimes observed in these systmes is the occurence of oxygen evolution, due to the decomposition of this peracid or hydrogen peroxide into acid and/or water and oxygen.
  • the oxygen bubbles thus formed may either emerge from the liquid or be trapped in the liquid, thereby causing a volume increase.
  • Liquid detergent compositions according to the invention are preferably volume stable in that they show less than 25% preferably less than 10%, more preferably less than 5% volume increase during storage at a temperature between 20 and 37°C for a period of three months after preparation.
  • liquid detergent compositions according to the invention will be stored in closed bottles, say of 1.5 litre, which optionally may include venting means, for releasing generated oxygen.
  • the compositions according to the present invention also comprise a stabilising agent for the bleach component.
  • Suitable stabilisers are well-known in art and include EDTA, Magnesium silicates and phosphonates such as for instance the Dequest® range ex Monsanto and Naphthol® ex Merck.
  • the amount of stabilising agent is from 0.05 to 5 % by weight of the composition, more preferred from 0.05 to 1% of the composition.
  • compositions of the present invention may comprise one or more bleach activator agents. These materials when combined with a peroxy bleach in the wash, will activate hydrogen peroxide at a low temperature of from 15 to 55°C therewith allowing the effective use of peroxide bleaches at low washing temperatures.
  • the bleach activators used in the present invention often also referred to as peroxyacid bleach precursors are conventionally organic compounds having one or more reactive acyl groups, which at relatively low temperature react with hydrogenperoxide causing the formation of organic peroxyacids, the latter providing for a more effective bleaching action at lower temperatures than hydrogen peroxide itself.
  • N,N,N,N'-tetraacyl ethylene diamine normally referred to as TAED.
  • Another well-known bleach activator is sodium-4-benzoyl oxybenzene sulphonate normally referred to as BOBS, as disclosed in GB 836,988.
  • organic bleach activators are other n-acyl substituted amides, for example tetraacetyl methylene diamine; carboxylic acid anhydrides for example succinic, benzoic and phthalic anhydrides; carboxylic acid esters, for example sodium acetoxy benzene sulphonate; acetates such as glyceroltriacetate, glucose pentaacetate and xylose-tetraacetate and acetyl salicylic acid.
  • carboxylic acid anhydrides for example succinic, benzoic and phthalic anhydrides
  • carboxylic acid esters for example sodium acetoxy benzene sulphonate
  • acetates such as glyceroltriacetate, glucose pentaacetate and xylose-tetraacetate and acetyl salicylic acid.
  • TAED is used as the bleach activator.
  • the preferred level of bleach activator in the liquid detergent is from 0.1 to 10 % by weight preferably from 0.5 to 5 % by weight of the composition.
  • the bleach activator is present in the system in at least partly undissolved form.
  • One way of ensuring that the activator is present in undissolved form is the use of encapsulated activator materials.
  • Another method is to increase the amount of electrolyte in the composition, therewith reducing the solubility of the activator in the system.
  • Suitable electrolytes for this purpose are for instance the at least partially water soluble carbonate, sulphate and halogenide salts and metaborate.
  • Other preferred electrolytes are salting out electrolytes as defined hereabove.
  • the dissolved part of the electrolyte constitutes preferably more than 2 % by weight of the composition, more preferred more than 5% by weight, especially preferred between 10 and 50 % by weight.
  • compositions of the invention preferably have a pH between 7 and 11, most preferred more than 8 and less than 10, for example from 8.5 to 9.5.
  • the viscosity of the product directly after preparation it has been found that a lower value for the viscosity generally increases the volume stability of the bleach containing product. Also lower viscosities are generally preferred by the consumer. However, for providing solid-suspending properties, low viscosities should preferably be avoided. Therefore in selecting the most appropriate viscosity of the product, a balance should be sought between better stability and consumer-acceptance at lower viscosities and increased solid suspending properties at higher viscosities.
  • the viscosity is preferably less than 5,000 mPas at 21 s -1 , more preferred less than 1,500, most preferred between 20 and 1,000, especially preferred from 30 to 500.
  • the viscosity is more than 1,000 mPas at 10 -4 s -1 , more preferred more than 10,000, especially preferred more than 100,000.
  • the techniques for obtaining the initial viscosity as desired are well-known in the art, and include for example the appropriate choice of active ingredients, the adaptation of the level of dissolved electrolyte and the inclusion of viscosity modifying agents.
  • a preferred way for regulating the viscosity of the product is the inclusion of polymers in the composition.
  • Viscosity and/or stability regulating polymers which are preferred for incorporation in compositions according to the invention include deflocculating polymers e.g those having a hydrophilic backbone and at least one hydrophobic side chain. Such polymers are for example described in our copending British patent applications 8813978.7 (corresponding to EP 346 995).
  • the amount of viscosity regulating polymer, especially deflocculating polymers is from 0.1 to 5% by weight of the total composition, more preferred from 0.2 to 2%.
  • the aqueous continuous phase contains dissolved electrolyte.
  • electrolyte means any ionic water soluble material.
  • the electrolyte is necessarily dissolved but may be suspended as particles of solid because the total electrolyte concentration of the liquid is higher than the solubility limit of the electrolyte.
  • Mixtures of electrolytes also may be used, with one or more of the electrolytes being in the dissolved aqueous phase and one or more being substantially only in the suspended solid phase. Two or more electrolytes may also be distributed approximately proportionally, between these two phases. In part, this may depend on processing, e.g.
  • salts includes all organic and inorganic materials which may be included, other than surfactants and water, whether or not they are ionic, and this term encompasses the sub-set of the electrolytes (water soluble materials).
  • compositions optionally also contain electrolyte in an amount sufficient to bring about structuring of the detergent active material.
  • the compositions contain from 1% to 60%, especially from 10 to 45% of a salting-out electrolyte.
  • Salting-out electrolyte has the meaning ascribed to in specification EP-A-79 646.
  • some salting-in electrolyte (as defined in the latter specification) may also be included, provided it is of a kind and in an amount compatible with the other components and the composition is still in accordance with the definition of the invention claimed herein.
  • Some or all of the electrolyte may have detergency builder properties.
  • compositions according to the present invention include detergency builder material, some or all of which may be electrolyte.
  • the builder material is any material capable of reducing the level of free calcium ions in the wash liquor and will preferably provide the composition with other beneficial properties such as the generation of an alkaline pH, the suspension of soil removed from the fabric.
  • Examples of phosphorous-containing inorganic detergency builders when present, include the water-soluble salts, especially alkali metal pyrophosphates, orthophosphates, polyphosphates and phosphonates.
  • Specific examples of inorganic phosphate builders include sodium and potassium tripolyphosphates, phosphates and hexametaphosphates. Phosphonate sequestrant builders may also be used. Sometimes, however, it is preferred to minimise the amount of phosphorous-containing builders.
  • non-phosphorus-containing inorganic detergency builders when present, include water-soluble alkali metal carbonates, bicarbonates, silicates and crystalline and amorphous aluminosilicates. Specific examples include sodium carbonate (with or without calcite seeds), potassium carbonate, sodium and potassium bicarbonates, silicates and zeolites.
  • organic detergency builders when present, include the alkaline metal, ammonium and substituted ammonium polyacetates, carboxylates, polycarboxylates, polyacetyl carboxylates and polyhydroxysulphonates. Specific examples include sodium, potassium, lithium, ammonium and substituted ammonium salts of ethylenediaminetetraacetic acid, nitrilotriacetic acid, oxydisuccinic acid, melitic acid, benzene polycarboxylic acids, CMOS, tartrate mono succinate, tartrate di succinate and citric acid.
  • the level of non-soap builder material is from 5-50 % by weight of the composition, more preferred from 5 to 35 %.
  • compositions of the present invention contain low levels or are substantially free from hydrotropes.
  • hydrotrope any water soluble agent which tends to enhance the solubility of surfactants in aqueous solution.
  • lather boosters such as alkanolamides, particularly the monoethanolamides derived from palm kernel fatty acids and coconut fatty acids, lather depressants, inorganic salts such as sodium sulphate, and, usually present in very minor amounts, fluorescent agents, perfumes, enzymes such as proteases, amylases and lipases (including Lipolase (Trade Mark) ex Novo), germicides and colourants.
  • compositions of the invention may be prepared by any conventional method for the preparation of liquid detergent compositions.
  • a preferred method involves the dispersing of the electrolyte (non-builder) -if any- together with the minor ingredients except for the temperature sensitive ingredients -if any- in water of elevated temperature, followed by the addition of the builder material -if any-, the detergent active materials (optionally as a pre-mix) under stirring and thereafter cooling the mixture and adding any temperature sensitive minor ingredients such as enzymes or perfumes and the bleach.
  • the deflocculating polymer - if any- may for example be added after the electrolyte ingredient or as the final ingredient.
  • perborate monohydrate When perborate monohydrate is used as the bleaching agent, it may be preferred to cool the final product to a temperature just above the freezing point, in order to accelerate the recrystallisation of the perborate in tetrahydrate form.
  • liquid detergent compositions of the invention will generally be diluted with wash water to form a wash liquor, which may be used for detergency purposes, for example for the washing process in a washing machine.
  • concentration of liquid detergent composition in the wash liquor is preferably from 0.1 to 10 % by weight, more preferred from 0.1 to 3 %.
  • compositions may be prepared by adding the electrolyte together with the minor ingredients except for the perfume and the enzymes to water of elevated temperature, followed by the addition of the deflocculating polymer and then the detergent active materials as a premix under stirring and thereafter cooling the mixture and adding the enzymes the perfumes, the bleach and the fabric softener ingredient.
  • NaLas refers to sodium linear C 12 alkyl benzene sulphonate
  • the perborate tetra was added as a predispersion (Proxsol® ex ICI)
  • the polymer was deflocculating polymer A-44 as described in EP 346 995
  • the pH was adjusted to the value indicated -if necessary- with citric acid
  • the volume stability indicates the maximum volume increase during 3 months storage at ambient temperature
  • s indicated stability for example 8 the value is extrapolated.
  • compositions were prepared as in example 1-3, the ingredients used and the method of assessment of the product was as in examples 4-9.
  • compositions were prepared as in example 1-3, the ingredients used and the method of assessment of the product was as in examples 4-9.

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Claims (6)

  1. Alkalische wäßrige flüssige Reinigungsmittelzusammensetzung, die
    (a) mindestens 10 Gew.-% Wasser;
    (b) 2-60 Gew.-% waschaktive Materialien;
    (c) ein Persauerstoffbleichmittel;
    (d) 0,05 bis 25 Gew.-% an Bestandteilen, die den Geweben eine Weichheit verleihen sollen und die aus
    (i) gewebeerweichenden Tonen,
    (ii) gewebeerweichenden Celluloseethermaterialien,
    (iii) ein quaternäres Ammoniumgewebeerweichungsmittel, ein Aminerweichungsmittelmaterial, ein amphoteres Gewebeerweichungsmittelmaterial oder Gemische hiervon umfassenden Feststoffteilchen und
    (iv) Gemischen hiervon ausgewählt sind, umfaßt und
    dadurch gekennzeichnet ist, daß das Persauerstoffbleichmittel unter Perboraten, Persulfaten, Peroxydisulfaten, Perphosphaten und den durch Reaktion von Wasserstoffperoxid mit Harnstoff oder Alkalimetallcarbonat gebildeten kristallinen Peroxyhydraten ausgewählt ist und in einer 0,1 bis 15 Gew.-% der Zusammensetzung an aktivem Sauerstoff entsprechenden Menge vorliegt, wobei mindestens ein Teil des Bleichmittels in Form von Feststoffteilchen, die in dem System suspendiert sind, vorhanden ist.
  2. Wäßrige flüssige Reinigungsmittelzusammensetzung nach Anspruch 1, dadurch gekennzeichnet, daß sie 1 bis 60 Gew.-% an aussalzenden Elektrolyten umfaßt.
  3. Wäßrige flüssige Reinigungsmittelzusammensetzung nach Anspruch 1, dadurch gekennzeichnet, daß das Bleichmittelmaterial unter Perboraten und Percarbonaten ausgewählt ist.
  4. Wäßrige flüssige Reinigungsmittelzusammensetzung nach Anspruch 1, dadurch gekennzeichnet, daß sie 0,1 bis 5 Gew.-% an die Viskosität steuernden Polymeren umfaßt.
  5. Wäßrige flüssige Reinigungsmittelzusammensetzung nach Anspruch 1, dadurch gekennzeichnet, daß der Bestandteil zur Gewährleistung einer Weichheit ein gewebeerweichendes Tonmaterial ist.
  6. Wäßrige flüssige Reinigungsmittelzusammensetzung nach Anspruch 1, die
    (a) 2-60 Gew.-% waschaktive Materialien;
    (b) ein Persauerstoffbleichmittel in einer 0,1 bis 15 Gew.-% der Zusammensetzung an aktivem Sauerstoff entsprechenden Menge, wobei mindestens ein Teil des Bleichmittels als in dem System suspendierte Feststoffteilchen vorhanden ist;
    (c) 0,05 bis 25 Gew.-% an Bestandteilen, die den Geweben eine Weichheit verleihen sollen;
    (d) 1 bis 60 Gew.-% an Elektrolytmaterialien;
    (e) 5 bis 50 Gew.-% an Nichtseifebuildermaterialien und
    (f) 0,1 bis 5% an die Viskosität steuernden Polymeren umfaßt,
    wobei das Produkt eine Viskosität von weniger als 1500 mPas bei 21s-1, eine Volumenzunahme von weniger als 25% bei 3monatiger Lagerung nach Herstellung bei einer Temperatur zwischen 20 und 37°C und einen pH-Wert von 7 bis 12 aufweist.
EP91902945A 1990-03-06 1991-02-01 Flüssige waschmittel Expired - Lifetime EP0518870B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP90200525 1990-03-06
EP90200525 1990-03-06
PCT/EP1991/000212 WO1991013963A1 (en) 1990-03-06 1991-02-01 Liquid detergents

Publications (2)

Publication Number Publication Date
EP0518870A1 EP0518870A1 (de) 1992-12-23
EP0518870B1 true EP0518870B1 (de) 1997-01-08

Family

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EP91902945A Expired - Lifetime EP0518870B1 (de) 1990-03-06 1991-02-01 Flüssige waschmittel

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EP (1) EP0518870B1 (de)
JP (1) JPH0768541B2 (de)
AU (1) AU651082B2 (de)
CA (1) CA2076970C (de)
DE (1) DE69124090T2 (de)
ES (1) ES2097201T3 (de)
WO (1) WO1991013963A1 (de)
ZA (1) ZA911642B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996033258A1 (en) * 1995-04-20 1996-10-24 Albright & Wilson Uk Limited Stabilised aqueous suspensions of bleach containing perborate particles
EP1437397B1 (de) * 2001-09-27 2009-08-12 National Institute of Advanced Industrial Science and Technology Reinigungsmittel
JP4481138B2 (ja) * 2004-10-08 2010-06-16 花王株式会社 液体洗浄剤組成物
JP5138169B2 (ja) * 2005-12-27 2013-02-06 ライオン株式会社 液体漂白剤組成物

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996152A (en) * 1975-03-27 1976-12-07 The Procter & Gamble Company Bleaching composition
US4166794A (en) * 1978-05-25 1979-09-04 Colgate-Palmolive Company Liquid bleach-softener compositions
US4430236A (en) * 1981-06-22 1984-02-07 Texize, Division Of Mortonthiokol Liquid detergent composition containing bleach
GB8308508D0 (en) * 1983-03-28 1983-05-05 Ici Plc Detergent compositions
US4555349A (en) * 1983-04-08 1985-11-26 Lever Brothers Company Fabric softening compositions
DE3575574D1 (de) * 1984-05-01 1990-03-01 Unilever Nv Fluessige bleichmittelzusammensetzungen.
CA1323280C (en) * 1987-07-31 1993-10-19 Mario Bulfari Liquid detergent compositions
GB8826458D0 (en) * 1988-11-11 1988-12-14 Ici Plc Bleach formulation & aqueous detergent compositions
US4891147A (en) * 1988-11-25 1990-01-02 The Clorox Company Stable liquid detergent containing insoluble oxidant

Also Published As

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AU7155191A (en) 1991-10-10
CA2076970C (en) 1996-12-17
JPH0768541B2 (ja) 1995-07-26
ES2097201T3 (es) 1997-04-01
EP0518870A1 (de) 1992-12-23
WO1991013963A1 (en) 1991-09-19
AU651082B2 (en) 1994-07-14
ZA911642B (en) 1992-11-25
DE69124090T2 (de) 1997-04-30
CA2076970A1 (en) 1991-09-07
DE69124090D1 (de) 1997-02-20
JPH05503956A (ja) 1993-06-24

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