EP0491723B1 - Detergents liquides - Google Patents

Detergents liquides Download PDF

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Publication number
EP0491723B1
EP0491723B1 EP90912561A EP90912561A EP0491723B1 EP 0491723 B1 EP0491723 B1 EP 0491723B1 EP 90912561 A EP90912561 A EP 90912561A EP 90912561 A EP90912561 A EP 90912561A EP 0491723 B1 EP0491723 B1 EP 0491723B1
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EP
European Patent Office
Prior art keywords
composition
sodium
sulphonate
materials
hydrotroping
Prior art date
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EP90912561A
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German (de)
English (en)
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EP0491723B2 (fr
EP0491723A1 (fr
Inventor
Mario Bulfari
Johannes Cornelis Van De Pas
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Unilever NV
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Unilever PLC
Unilever NV
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Priority claimed from GB8920716A external-priority patent/GB8920716D0/en
Priority claimed from EP90200290A external-priority patent/EP0385522B1/fr
Priority claimed from PCT/EP1990/001046 external-priority patent/WO1991000902A1/fr
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP90912561A priority Critical patent/EP0491723B2/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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0026—Structured liquid compositions, e.g. liquid crystalline phases or network containing non-Newtonian phase
    • 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
    • C11D3/18—Hydrocarbons
    • 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
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2003—Alcohols; Phenols
    • 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
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/3418—Toluene -, xylene -, cumene -, benzene - or naphthalene sulfonates or sulfates

Definitions

  • the present invention is concerned with aqueous liquid detergent compositions which contain sufficient detergent-active material and, optionally, sufficiently dissolved electrolyte to result in a structure of lamellar droplets dispersed in a continuous aqueous phase.
  • Lamellar droplets are a particular class of surfactant structures which, inter alia, are already known from a variety of references, e.g. H.A.Barnes, 'Detergents', Ch.2. in K.Walters (Ed), 'Rheometry: Industrial Applications', J. Wiley & Sons, Letchworth 1980, FR-A-2426731, GB-A-2023637, GB-A-2031941 and EP-A-301884.
  • Such lamellar dispersions are used to endow properties such as consumer-preferred flow behaviour and/or turbid appearance. Many are also capable of suspending particulate solids such as detergency builders or abrasive particles. Examples of such structured liquids without suspended solids are given in US patent 4 244 840, whilst examples where solid particles are suspended are disclosed in specifications EP-A-160 342; EP-A-38 101; EP-A-104 452 and also in the aforementioned US patent 4 244 840. Others are disclosed in European Patent Specification EP-A-151 884, where the lamellar droplet are called 'spherulites'.
  • lamellar droplets in a liquid detergent product may be detected by means known to those skilled in the art, for example optical techniques, various rheometrical measurements, X-ray or neutron diffraction, and electron microscopy.
  • Non pre-published EP-A-346 995 describes structured liquids comprising a deflocculating polymer.
  • Formulation 12 comprises also triethanolamine.
  • Non pre-published EP-A-415 698 describes structured fabric softening liquids comprising a deflocculating polymer. These compositions have a pH of less than 6.0 and an electrolyte/isopropanol ratio lower than 1:1.
  • the droplets consist of an onion-like configuration of concentric bi-layers of surfactant molecules, between which is trapped water or electrolyte solution (aqueous phase). Systems in which such droplets are close-packed provide a very desirable combination of physical stability and solid-suspending properties with useful flow properties.
  • the viscosity and stability of the product depend on the volume fraction of the liquid which is occupied by the droplets. Generally speaking, when the volume fraction is around 0.6, the droplets are just touching (space-filling). This allows reasonable stability with an acceptable viscosity (say no more than 2.5 Pas, preferably no more than 2.0 Pas, more preferably no more than 1 Pas at a shear rate of 21s- 1 ). This volume fraction also endows useful solid-suspending properties.
  • a problem in the formulation of liquid detergent compositions is to have a relatively high volume fraction of lamellar droplets without the occurence of flocculation of the droplets.
  • flocculation occurs between the lamellar droplets at a given volume fraction, the viscosity of the corresponding product will increase due to the formation of a network throughout the liquid.
  • Flocculation may also lead to instability reflected in phase separation of the product.
  • a second aspect of the present invention is the discovery that low levels of hydrotroping agents can be used for the stabilisation of active structured liquid detergent compositions.
  • hydrotroping materials may for example be included for providing secondary benefits, for example anti-wrinkling properties or perfume benefits or for providing other benefits such as a decrease in solubility of certain ingredients which may be prone to decomposition in solubilised form.
  • hydrotroping materials tend to "dissolve" the detergent active materials from the lamellar droplets into the aqueous phase, therewith possibly reducing the physical stability and/or solid suspending properties.
  • the present invention relates to a physically stable liquid detergent composition
  • a physically stable liquid detergent composition comprising a dispersion of lamellar droplets of detergent active materials in an aqueous continuous phase, said composition comprising a salting-out electrolyte and from 0.05 to 20 % by weight of a hydrotroping material, other than glycerol and triethanolamine, the weight ratio of salting out electrolyte to hydrotrope being from 20:1 to 1:1, said composition providing a pH within the range of 7.5 to 12.5.
  • compositions of the invention are physically stable. Furthermore compositions according to the invention which contain low levels of hydrotroping materials are preferably physically unstable in the absence of hydrotropes.
  • physical stability for these systems can be defined in terms of the maximum separation compatible with most manufacturing and retail requirements. That is, the 'stable' compositions will yield no more than 2% by volume phase separation as evidenced by appearance of 2 or more separate phases when stored at 25 ° C for 21 days from the time of preparation.
  • 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 for three months after preparation.
  • a hydrotroping material is a component, which, when added to a standard lamellar droplet type liquid detergent compositions, in a large amount (say 5% by weight) without the addition of an effective amount of salting-out electrolyte, destabilises the dispersed lamellar phase, therewith causing the -at least partly- breaking down of this phase into an L 2 , active rich L, or isotropic micellar structure.
  • L 2 and L 1 phases are for example described by G.J.T. Tiddy, in Physical Reports 57, No 1 (1980) 1-46.
  • micellar structure may in some instances be evidenced by the forming of a separate isotropic phase; also possible is that the micellar structure is present in the continuous aqueous base of the product, then the presence may be evidenced by the fact that the aqueous phase -when isolated-contains more than 1 % by weight of surfactant materials.
  • the preferred standard composition for distinguishing between hydrotroping materials and non-hydrotroping materials has the following formulation:
  • the level of Na-Citrate in the standard composition is at least 5 parts by weight, more preferably however the level of Na-Citrate is 10 parts by weight.
  • Suitable hydrotroping materials for use in compositions of the present invention may for example be selected from the class of hydrotroping materials which have hitherto been suggested for use in isotropic detergent compositions. Examples of suitable materials are:
  • hydrotroping agents may be used.
  • glycerol is not a hydrotroping agent.
  • Preferred hydrotroping materials are the lower alcohols such as ethanol.
  • the level of hydrotroping material in compositions of the present invention can be varied as described hereinbefore within a range of from 0.5 - 200% by weight.
  • the preferred levels of hydrotroping materials are in the range from 0.05 to 4.0 % by weight of the composition, more preferably up to 1.0 %.
  • the preferred level of hydrotroping materials is at least 1.0 % by weight, more preferably at least 4.0%.
  • compositions of the invention also comprise detergent active materials, preferably at a level of from 1 to 70% by weight of the composition, more preferably from 5 to 50 % by weight, most preferably from 10 to 40 % by weight.
  • the detergent-active material 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.
  • surfactants may be chosen from any of the classes, subclasses and specific materials described in 'Surface Active Agents' Vol.1, by Schwartz & Perry, Interscience 1949 and 'Surface Active Agents' Vol.ll by Schwartz, Perry & Berch (Interscience 1958), in the current edition of "McCutcheon's Emulsifiers & Detergents" published by the McCutcheon division of Manufacturing Confectioners Company or in 'Tensid-Taschenbuch', H.Stache, 2nd Edn., Carl Hanser Verlag, Munchen & Wien, 1981.
  • 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, 8 ) 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-A-328 177, especially the use of alkyl polyglycoside surfactants, such as for example disclosed in EP-A-70 074.
  • the level of nonionic surfactants is more than 1 % of the composition, more preferably from 2.0 to 20.0% by weight of the composition, most preferably from 3.0 to 6.0 %.
  • Especially preferred nonionic materials for use in compositions of the present invention are ethoxylated alcohols comprising from 2 to 10 EO groups.
  • Advantageous materials are for instance Synperonic A7, Synperonic AS and Synperonic A3 (ex ICI) or mixtures thereof.
  • compositions of the present invention preferably contain anionic surfactant ingredients, which are preferably present in combination with the above mentioned nonionic materials.
  • Suitable anionic surfactants are usually water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from 8 to 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 l8 ) 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 l8 ) 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 neutralized with sodium hydroxide; sodium and potassium salts of fatty acid
  • 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 or mixtures thereof.
  • the sodium or potassium soaps of these acids can be used.
  • compositions also contain a salting-out electrolyte.
  • the salting-out electrolyte is present in an effective amount.
  • This effective amount can be determined by adjusting the amount of electrolyte while keeping the relative amounts of the other ingredients constant.
  • the level of electrolyte is chosen such that after centrifuging the composition for 17 h at 750 G the level of surfactant in the aqueous phase is less than 5% by weight, more preferably less than 2%, most preferably less than 1 %.
  • the level of salting-out electrolytes is preferably from 1 to 50 % by weight. More preferably the level of salting-out electrolytes is from 5 to 45%, most preferably from 10 to 35 % by weight.
  • Salting-out electrolyte has the meaning ascribed to in specification EP-A-79 646, that is those materials having a lyotropic number of less than 9.5. Optionally, some salting-in electrolyte (as defined in the latter specification) may also be included.
  • Preferred salting-out electrolytes are for example citrates, borates, formates and tripolyphosphates.
  • Preferred salting-in electrolytes are NaCl and Na-acetate.
  • compositions according to the present invention include detergency builder material, some or all of which may be electrolyte.
  • Examples of phosphorus-containing inorganic detergency builders include the water-soluble salts, especially alkali metalpyrophosphates, 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.
  • 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.
  • the stabilising effect of the hydrotroping agent is especially noticeable in compositions containing zeolite builders, especially in compositions containing high levels of zeolite builders, for example of from 10 to 30 % by weight of the compositions, more preferred from 15 to 20%.
  • electrolytes which promote the solubility of other electrolytes, for example use of potassium salts to promote the solubility of sodium salts.
  • electrolytes which promote the solubility of other electrolytes
  • potassium salts to promote the solubility of sodium salts.
  • 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, tartrate mono succinate, tartrate disuccinate and citric acid.
  • compositions of the present invention alternatively, or in addition to the partly dissolved polymer, yet another polymer which is substantially totally soluble in the aqueous phase and has an electrolyte resistance of more than 5 grams sodium nitrilotriacetate in 100ml of a 5% by weight aqueous solution of the polymer, said second polymer also having a vapour pressure in 20% aqueous solution, equal to or less than the vapour pressure of a reference 2% by weight or greater aqueous solution of polyethylene glycol having an average molecular weight of 6000; said second polymer having a molecular weight of at least 1000.
  • Use of such polymers is generally described in our EP 301,883. Typical levels are from 0.5 to 4.5% by weight.
  • compositions according to the present is preferably less than 2500 mPas, especially preferred less than 2000 mPas, more preferred less than 1500 mPas, most preferred between 30 and 1000 mPas at 21 s- 1.
  • One way of regulating the viscosity and stability of compositions according to the present invention is to include viscosity regulating polymeric materials.
  • Viscosity and/or stability regulating polymers which are preferred for incorporation in compositions according to the invention include deflocculating polymers having a hydrophilic backbone and at least one hydrophobic side chain. Such polymers are for instance described in our copending European application 89201530.6. (EP-A-346 995).
  • compositions of the invention have solid suspending properties, most preferably they do not yield any visible sedimentation after storage for 3 weeks at 21 ° C when 10% of a solid particulate material e.g. calcite or zeolite is incorporated.
  • a solid particulate material e.g. calcite or zeolite
  • compositions of the invention preferably contain from 10-80% by weight of water, more preferably 15-60%, most preferably 20-50%.
  • lather boosters such as alkanolamides, particularly the monoethanolamides derived from palm kernel fatty acids and coconut fatty acids, fabric softeners such as clays, amines and amine oxides, lather depressants, oxygen-releasing bleaching agents such as sodium perborate and sodium percarbonate, peracid bleach precursors, chlorine-releasing bleaching agents such as trichloroisocyanuric acid, 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.
  • lather boosters such as alkanolamides, particularly the monoethanolamides derived from palm kernel fatty acids and coconut fatty acids
  • fabric softeners such as clays, amines and amine oxides
  • lather depressants oxygen-releasing bleaching agents such as sodium perborate and sodium percarbonate, peracid bleach precursor
  • An especially preferred embodiment of the present invention relates to the combined use of bleach ingredients and hydrotroping materials in liquid detergent compositions of the lamellar droplet type.
  • the use of relatively high levels of hydrotroping materials enhances the stability of the bleach ingredient, especially when partially insoluble bleaches such as sodium perborate are used.
  • the level of bleach material, especially of peroxygen bleach material, more preferably of perborate or percarbonate bleach material is from 1- 25 % by weight of the composition, more preferred from 3- 20 %, most preferred from 5 - 15 %.
  • compositions comprise salting-out electrolyte, water and hydrotrope, wherein the weight ratio of water to hydrotrope is between 20:1 and 1:1, more preferably between 10:1 and 3:1.
  • the weight ratio of salting-out electrolyte to hydrotrope is from 20:1 to 1:1, preferably from 10:1 to 2:1, more preferably from 8:1 to 4:1.
  • the weight ratio of water to electrolyte is preferably from 10:1 to 1:1, more preferably 8:1 to 2:1, most preferably 6:1 to 4:1.
  • 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 ingredient 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, the hydrotroping material and the detergent active material under light stirring and finally cooling the mixture and adding any temperature sensitive minor ingredients such as enzymes, perfumes etc.
  • the detergent compositions of the invention will be diluted with wash water to form a wash liquor for instance for use in a washing machine.
  • concentration of liquid detergent composition in the wash liquor is preferably from 0.1 to 10 %, more preferred from 0.1 to 3% by weight.
  • the liquid detergent compositions should be alkaline, and it is preferred that they should provide a pH within the range of 8.5 to 12, preferably 9 to 11, when used in aqueous solutions of the composition at the recommended concentration.
  • the undiluted liquid composition should also be of a pH above 7, for example pH 7.5 to 12.5. It should be noted that an excessively high pH, e.g. over pH 13, is less desirable for domestic safety. If hydrogen peroxide is present in the liquid composition, then the pH is generally from 7.5 to 10.5, preferably 8 to 10, and especially 8.5 to 10, to ensure the combined effect of good detergency and good physical and chemical stability.
  • any such highly alkaline detergent composition should, of course, be chosen for alkaline stability, especially for pH-sensitive materials such as enzymes, and a particularly suitable proteolytic enzyme.
  • the pH may be adjusted by addition of a suitable alkaline material.
  • Liquid detergent compositions of the following formulation were prepared by heating the water to 50 ° C and mixing the fluorescer, the calcium chloride, Dequest, silicone, glycerol, borax and the hydroxide into the liquid, followed by the addition of the zeolite material and the SXS material. A premix of the ABS material and the Synperonic material is added to the system under stirring. The pH of the product is adjusted to about 7.5. Finally the product is cooled to ambient temperature and the remaining ingredients are added and the product is stored for three weeks at 25 ° C.
  • compositions A and B were both lamellar structured liquid detergent compositions having solid suspending properties.
  • Composition A outside the scope of the present invention, had direct after preparation a viscosity of 1270 mPas at 21 s -1 . After three weeks storage at 25 ° C the compositions showed 10 % by volume phase separation.
  • Composition B according to the invention had an initial viscosity of 890 mPas at 21 s -1 and showed no visible phase separation after storage for three weeks at 25 ° C.
  • compositions were stable liquid detergents having a lamellar structure.
  • the corresponding compositions minus the hydrotroping material were physically unstable (some phase separation upon storage).
  • compositions were made by mixing the ingredients in the order as indicated.
  • the following formulation was prepared by adding the ingredients to water in the order listed.
  • compositions were made by adding the ingredients in the listed order to water under stirring.
  • compositions were 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 detergent active material as a premix under stirring and thereafter cooling the mixture and adding the enzymes, perfumes and the bleach.
  • a composition as described in example IX of EP-A-293 040 (P&G) was prepared by adding the following ingredients in the order listed under stirring:
  • compositions as disclosed in EP-A-293 040 are difficult to reproduce and suffer from an unacceptable high viscosity and/or volume instability and/or physical instability.
  • a compositiom according to example 70 of US-A-4,618,446 was prepared by adding the NaOH to the water at ambient temperature, followed by the addition of the surfactants, the remaining electrolytes and the remaining ingredients.
  • composition was prepared wherein the SXS was omitted. Both compositions were stored for 21 and 42 days at 25 ° C.
  • composition without the SXS ingredient was physically stable (no phase separation after storage), the composition with SXS was physically stable after 21 days of storage, but unstable after 6 weeks.
  • the viscosity of the composition without SXS was 2,750 mPas at 21 s -1 , the viscosity of the composition with SXS was 3,800 mPas.
  • compositions as disclosed in US-A-4,618,446 do not comprise SXS as a stabiliser; furthermore compositions according to this patent appear of high viscosity.

Abstract

Composition stable de détergent liquide comportant une dispersion de gouttelettes lamellaires de matériaux à activité détergente en phase continue aqueuse. Cette composition comprend un matériau hydrotrope et de préférence un électrolyte relargeant.

Claims (5)

1. Composition détergente liquide physiquement stable, qui comprend : une dispersion de gouttelettes lamellaires de matières détergentes actives dans une phase aqueuse continue, ladite composition comprenant un électrolyte de relargage et de 0,05 à 20% en poids d'une matière hydrotrope autre que le glycérol et la triéthanolamine, le rapport pondéral de l'électrolyte de relargage à l'hydrotrope étant compris entre 20:1 et 1:1, ladite composition ayant un pH de 7,5 à 12,5.
2. Composition détergente liquide selon la revendication 1, qui comprend de 1 à 35% d'un électrolyte de relargage et au moins 1,0% en poids d'une matière hydrotrope.
3. Composition selon les revendications 1 et 2 dans laquelle la matière hydrotrope est choisie parmi :
(i) les arylsulfonates de métaux alcalins choisis parmi le xylènesulfonate de sodium, le toluènesulfo- nate de sodium, le cumènesulfonate de sodium, le tetralinesulfonate de sodium, le naphtalènesulfo- nate de sodium et leurs dérivés à chaîne alkylique courte ;
(ii) des mono- et di-alcools et leurs dérivés choisis parmi les alcools inférieurs tels que l'éthanol, l'isopropanol, le propylène-glycol et l'éthylène-glycol, la monoéthanolamine et l'éther dibutylique de 1,2-propylène-glycol ainsi que les alcools supérieurs contenant de 3 à 10 atomes de carbone, la longueur de la chaîne de carbone étant plus courte d'au moins 4 atomes de carbone que la longueur moyenne de la chaîne hydrocarbyle dans les matières tensioactives utilisées dans la composition ;
(iii) les matières hydrocarbonées choisies parmi les paraffines en Cs-i2, la chaîne hydrocarbonée étant plus courte d'au moins 2 atomes de carbone que la longueur moyenne de la chaîne hydrocarbyle des tensioactifs utilisés dans la composition ; et
(iv) les solvants organiques choisis parmi le limonène, le linalool, l'alcool benzylique, le diglyme, le phtalate de dibutyle et le terpène ; et leurs mélanges.
4. Utilisation de 0,05 à 20% en poids par rapport à la composition totale d'une matière hydrotrope autre que le glycérol à titre de stabilisant pour les compositions détergentes liquides, comprenant une dispersion de gouttelettes lamellaires de détergents actifs au sein d'une phase continue et un électrolyte de relargage.
5. Utilisation selon la revendication 4, dans laquelle la matière hydrotrope est choisie parmi :
(i) les arylsulfonates de métaux alcalins choisis parmi le xylènesulfonate de sodium, le toluènesulfo- nate de sodium, le cumènesulfonate de sodium, le tetralinesulfonate de sodium, le naphtalènesulfo- nate de sodium et leurs dérivés à chaîne alkylique courte ;
(ii) des mono- et di-alcools et leurs dérivés choisis parmi les alcools inférieurs tels que l'éthanol, l'isopropanol, le propylène-glycol et l'éthylène-glycol, la monoéthanolamine et l'éther dibutylique de 1,2-propylène-glycol ainsi que les alcools supérieurs contenant de 3 à 10 atomes de carbone, la longueur de la chaîne de carbone étant plus courte d'au moins 4 atomes de carbone que la longueur moyenne de la chaîne hydrocarbyle dans les matières tensioactives utilisées dans la composition ;
(iii) les matières hydrocarbonées choisies parmi les paraffines en Cs-i2, la chaîne hydrocarbonée étant plus courte d'au moins 2 atomes de carbone que la longueur moyenne de la chaîne hydrocarbyle des tensioactifs utilisés dans la composition ; et
(iv) les solvants organiques choisis parmi le limonène, le linalool, l'alcool benzylique, le diglyme, le phtalate de dibutyle et le terpène ; et leurs mélanges.
EP90912561A 1989-09-13 1990-08-28 Detergents liquides Expired - Lifetime EP0491723B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90912561A EP0491723B2 (fr) 1989-09-13 1990-08-28 Detergents liquides

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
GB8920716 1989-09-13
GB8920716A GB8920716D0 (en) 1989-09-13 1989-09-13 Liquid detergents
EP90200290 1990-02-08
EP90200290A EP0385522B1 (fr) 1989-02-27 1990-02-08 Composition détergente liquide
PCT/EP1990/001046 WO1991000902A1 (fr) 1989-07-13 1990-06-27 Composition de blanchiment liquide
EP90201701 1990-06-27
EP90201701 1990-06-27
WOPCT/EP90/01046 1990-06-27
EP90912561A EP0491723B2 (fr) 1989-09-13 1990-08-28 Detergents liquides
PCT/EP1990/001461 WO1991004314A1 (fr) 1989-09-13 1990-08-28 Detergents liquides

Publications (3)

Publication Number Publication Date
EP0491723A1 EP0491723A1 (fr) 1992-07-01
EP0491723B1 true EP0491723B1 (fr) 1994-11-17
EP0491723B2 EP0491723B2 (fr) 1998-12-23

Family

ID=27233406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90912561A Expired - Lifetime EP0491723B2 (fr) 1989-09-13 1990-08-28 Detergents liquides

Country Status (9)

Country Link
EP (1) EP0491723B2 (fr)
JP (1) JPH0774360B2 (fr)
KR (1) KR960004489B1 (fr)
AU (1) AU647039B2 (fr)
BR (1) BR9007641A (fr)
DE (1) DE69014207T3 (fr)
ES (1) ES2066216T5 (fr)
TR (1) TR27315A (fr)
WO (1) WO1991004314A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5690296A (en) * 1995-04-20 1996-11-07 Albright & Wilson Uk Limited Stabilised aqueous suspensions of bleach containing perborat e particles

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1569617A (en) * 1976-03-08 1980-06-18 Procter & Gamble Liquid detergent composition
ES475852A1 (es) * 1977-12-09 1980-03-01 Albright & Wilson Un metodo para la manufactura de una composicion acuosa ten-soactiva concentrada
GB2021141B (en) * 1977-12-09 1982-06-16 Albright & Wilson Concentrated aqueous surfactant compositions
GB2031941B (en) * 1978-02-07 1982-06-30 Albright & Wilson Concentrated aqueous surfactant compositions
US4440665A (en) * 1978-05-26 1984-04-03 Albright & Wilson Limited Concentrated aqueous surfactant compositions
GB2023637B (en) * 1978-05-26 1982-06-23 Albright & Wilson Concentrated aqueous surfactant compositions
FR2521135B1 (fr) * 1982-02-05 1986-05-09 Oreal Composes polyanioniques, procede pour les preparer et compositions les contenant
GB8334250D0 (en) * 1983-12-22 1984-02-01 Albright & Wilson Liquid detergent compositions
GB8713574D0 (en) * 1987-06-10 1987-07-15 Albright & Wilson Liquid detergent compositions
GB8718215D0 (en) * 1987-07-31 1987-09-09 Unilever Plc Liquid detergent compositions
GB8718217D0 (en) * 1987-07-31 1987-09-09 Unilever Plc Liquid detergent compositions

Also Published As

Publication number Publication date
KR960004489B1 (ko) 1996-04-06
AU6177990A (en) 1991-04-18
DE69014207T3 (de) 1999-03-18
ES2066216T3 (es) 1995-03-01
DE69014207T2 (de) 1995-03-23
TR27315A (tr) 1995-01-12
JPH05500075A (ja) 1993-01-14
JPH0774360B2 (ja) 1995-08-09
ES2066216T5 (es) 1999-04-01
EP0491723B2 (fr) 1998-12-23
AU647039B2 (en) 1994-03-17
WO1991004314A1 (fr) 1991-04-04
EP0491723A1 (fr) 1992-07-01
BR9007641A (pt) 1992-07-07
DE69014207D1 (de) 1994-12-22

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