EP0592947A1 - Cleaning preparations - Google Patents

Cleaning preparations Download PDF

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Publication number
EP0592947A1
EP0592947A1 EP93116236A EP93116236A EP0592947A1 EP 0592947 A1 EP0592947 A1 EP 0592947A1 EP 93116236 A EP93116236 A EP 93116236A EP 93116236 A EP93116236 A EP 93116236A EP 0592947 A1 EP0592947 A1 EP 0592947A1
Authority
EP
European Patent Office
Prior art keywords
liquid detergent
detergent composition
composition according
weight
soap
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP93116236A
Other languages
German (de)
English (en)
French (fr)
Inventor
John Hawkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvay Solutions UK Ltd
Original Assignee
Albright and Wilson Ltd
Albright and Wilson UK Ltd
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
Priority claimed from GB929221377A external-priority patent/GB9221377D0/en
Priority claimed from GB929224870A external-priority patent/GB9224870D0/en
Application filed by Albright and Wilson Ltd, Albright and Wilson UK Ltd filed Critical Albright and Wilson Ltd
Publication of EP0592947A1 publication Critical patent/EP0592947A1/en
Ceased legal-status Critical Current

Links

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
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
    • 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
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
    • C11D10/045—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap based on non-ionic surface-active compounds and soap
    • 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
    • C11D17/08—Liquid soap, e.g. for dispensers; capsuled
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or salts thereof
    • C11D1/08—Polycarboxylic acids containing no nitrogen or sulfur
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/90—Betaines
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/92—Sulfobetaines ; Sulfitobetaines

Definitions

  • the present invention relates to novel cleaning preparations which are, stable, single phase liquids containing dissolved builders and high levels of surfactants, which afford superior laundry properties.
  • compositions of the invention are not dependent for stability on the presence of solvents, which may be undesirable on cost or environmental grounds.
  • Liquid laundry detergents have a number of advantages compared with powdered products, which have led to such liquids taking a substantial proportion of the total laundry detergent market.
  • the introduction of compact powders containing higher concentrations of active ingredient than the traditional powders has challenged the trend towards liquids.
  • concentrated aqueous surfactant compositions containing dissolved or suspended builder salts said compositions being of low viscosity.
  • mesophases or liquid crystal phases are phases which exhibit a degree of order less than that of a solid but greater than that of a classical liquid, e.g. order in one or two, but not all three dimensions.
  • micellar solutions L1-phase
  • M-Phase which is a liquid crystal with a hexagonal symmetry and is normally an immobile, wax-like material. Such products are not pourable and obviously cannot be used as liquid detergents.
  • concentrations e.g. above about 50% by weight, usually over some concentration range lying above 60% and below 80% a more mobile phase, the G-phase, is formed.
  • G-phases are non-Newtonian (shear thinning), normally pourable phases typically having a viscosity, cloudy, opalescent appearance and flow characteristics, which render them unattractive to consumers and unsuitable for use directly as laundry detergents.
  • surfactants form a hydrated solid.
  • Some, especially non-ionic surfactants form a liquid phase containing dispersed micelle size droplets of water (L2-phase).
  • L2 phases have been found unsuitable for use as liquid detergents because they do not disperse readily in water, but tend to form gels.
  • Other phases which may be observed but which are unsuitable for use directly as laundry detergents include the viscous isotropic (VI) phase which is immobile and has a vitreous appearance.
  • VI viscous isotropic
  • the different phases can be recognised by a combination of appearance, rheology, textures under the polarising microscope, electron microscopy and X-ray diffraction or neutron scattering.
  • Optically isotropic surfactant phases do not normally tend to rotate the plane of polarisation of plane polarised light. If a drop of sample is placed between two sheets of optically plane polarising material whose planes of polarisation are at right angles, and light is shone on one sheet, optically isotropic surfactant samples do not appear substantially brighter than their surroundings when viewed through the other sheet. Optically anisotropic materials appear substantially brighter. Optically anisotropic mesophases typically show characteristic textures when viewed through a microscope between crossed polarisers, whereas optically isotropic phases usually show a dark, essentially featureless continuum.
  • “Newtonian liquids” have a viscosity which remains constant at different shear rates.
  • liquids are considered Newtonian if the viscosity does not vary substantially at shear rates up to 1000 sec ⁇ 1.
  • the 'payload' of the composition is the percentage of ingredients, based on the total weight of the composition, which contribute to the washing effectiveness of said composition. i.e. functional ingredients, and includes surfactants, builders, optical brightners, alkaline buffers, enzymes, antiredeposition agents and antifoams.
  • an electrolyte means any water soluble compound which is not a surfactant and which ionises in solution.
  • electrolytes which tend to salt a surfactant out of solution when each is present in sufficiently high concentration, which are referred to herein as “surfactant-desolubilising electrolytes”.
  • Soap is used herein to mean an at least sparingly water soluble salt of a C8-C22 natural or synthetic aliphatic monocarboxylic fatty acid, said salt having surfactant properties.
  • Builder is used herein to mean a compound which assists the washing action of a surfactant by ameliorating the effects of dissolved calcium and/or magnesium. Generally, builders also help maintain the alkalinity of wash liquor. Typical builders include sequestrants and complexants such as sodium tripolyphosphate, potassium pyrophosphate, trisodium phosphate, sodium citrate or sodium nitrilo-triacetate, ion exchangers such as zeolites and precipitants such as sodium or potassium carbonate and such other alkalis as sodium silicate.
  • sequestrants and complexants such as sodium tripolyphosphate, potassium pyrophosphate, trisodium phosphate, sodium citrate or sodium nitrilo-triacetate, ion exchangers such as zeolites and precipitants such as sodium or potassium carbonate and such other alkalis as sodium silicate.
  • Detergents for laundry use normally contain a surfactant and a builder. The latter helps the surfactant to perform much more efficiently, thereby substantially reducing the amount of surfactant required.
  • Built liquid detergents typically contain about 5 to 15% of surfactant and 10 to 30% of builder.
  • Such products should ideally be of low, shear independent or Newtonian viscosity, and disperse readily in water without forming intermediate gels.
  • Such concentrated liquid detergents are especially suitable for industrial and institutional users, where the use of large volumes of detergent, and the need for efficient operation typically results in the implementation of automatic dosing systems.
  • liquid laundry detergents fall into three main categories.
  • the original liquid laundry detergents were aqueous surfactants, containing only low concentrations of water-soluble builder salts together with solvents and hydrotropes in order to overcome the salting out effect of any electrolyte, and maintain a stable, non-structured, isotropic, aqueous, micellar solution (L1-phase).
  • the performance of such products has been poor compared with powders.
  • the performance per gram of product has been improved by formulating them at relatively high concentrations, e.g. up to 60% by weight of surfactant, by the use of more soluble, but more expensive surfactants in conjunction with sufficiently high levels of organic solvent.
  • aqueous detergent composition capable of suspending solid builder, such as sodium tripolyphosphate or zeolite
  • a structured aqueous surfactant system a structured aqueous surfactant system.
  • the surfactant structure is usually formed by the interaction of dissolved electrolyte with the surfactant. The latter is salted out of the isotropic micellar phase to form a mesophase interspersed with the aqueous electrolyte. All structure surfactant systems exhibit shear dependent viscosity. Non-Newtonian viscosity is essential if the system is to be capable of suspending solid particles without risk of sedimentation, but is a disadvantage in the case of products intended for industrial and institutional use which need to be compatible with automatic dispensing systems.
  • the third type of detergent, and the most recent to be introduced onto the market is an anhydrous type.
  • This has the advantage of high surfactant concentration and also the possibility of including oxidising bleach which is normally difficult to include in aqueous formulations.
  • existing anhydrous formulations contain substantial amounts of organic solvent, which may be criticised on environmental grounds, and such formulations are difficult to dilute to wash liquor concentration. Addition of water tends to cause gel formation.
  • the high concentration of surfactant can give rise to a risk of overdosing.
  • the storage stability of this type of detergent is usually poor.
  • An object of this invention is to provide relatively concentrated liquid laundry detergents, e.g. containing 35% or greater payload, including surfactants and dissolved builders, which are isotropic (L1 phase) in the absence of opacifiers.
  • a particular object is to provide such compositions which do not require the presence of environmentally undesirable solvents, or expensive stabilisers or the relatively cost-ineffective surfactants which have been required for concentrated liquid detergents hitherto.
  • a further object is to provide a low viscosity, non-shear thickening liquid detergent suitable for automatic dispensing, for example for use in industrial or institutional situations.
  • our invention provides a Newtonian liquid detergent composition, wherein all percentages are by weight based on the total weight of the composition, said composition comprising:
  • compositions according to our invention should contain anionic sulpho surfactants.
  • anionic surfactant is preferably selected from alkyl benzene sulphonates, paraffin sulphonates, alkyl sulphates, alkyl ether sulphates and alkyl ether polycarboxylates.
  • a particularly preferred combination of anionic surfactants is that of alkyl benzene sulphonates with alkyl ether sulphates.
  • the compositions contain at least 25%, more usually at least 30%, sometimes more than 36% by weight of water.
  • the compositions contain at least 3% eg. at least 5% by weight of dissolved electrolyte consisting predominantly of builder salts.
  • our invention provides a liquid detergent composition, all percentages being by weight based upon the total weight of the composition, said composition comprising :-
  • the compositions contain at least 25%, more usually at least 30%, sometimes more than 36% by weight of water.
  • the compositions contain at least 3%, eg. at least 5% by weight of dissolved electroylte consisting predominantly of builder salts.
  • the products of this invention comprise, in percentages by weight, from 2 to 20% of an alkyl benzene sulphonate, from 0 to 15% of an alkyl ether sulphate; from 15 to 40% of soap; from 5 to 15% non-ionic alkoxylated surfactants; from 2 to 20% of total dissolved electrolyte comprising from 2 to 10% citrate, from 0 to 10% carbonate and from 0 to 4% phosphonate; and from 30 to 60% water.
  • the cationic components of the anionic surfactants and other salts preferably comprise at least 10% of mono, di- or tri-ethanolamine and the balance substantially an alkali metal ion.
  • the present invention provides clear, homogeneous, low viscosity, non-shear dependent liquids, typically having a viscosity of less than 0.6 Pa s at 20°C, wherein said compositions are suitable for automatic dosing.
  • the proportion of soap is preferably 8 to 20% expressed as weight % fatty acids, by weight of the composition, e.g. 10 to 15%.
  • the total proportion of soap expressed by weight of soap based on the total weight of the Composition is preferably 15-40% by weight, most preferably 18-35% by weight, e.g. 20-32% by weight.
  • the cationic component of the soap preferably comprises mono-, di- or tri-ethanolamine, preferably a mono- or di- ethanoloamine in a proportion between 7 and 25% by weight of the composition, more preferably 9 to 20% especially 10 to 15%, with the balance being substantially an alkali metal ion, preferably sodium and/or potassium.
  • the natural and synthetic acids which may be used to produce the soap are preferably C8-C22 saturated or unsaturated, straight or branched chain fatty acids including lauric, myristic, palmitic, stearic, arachidic, palmitoleic, oleic, ricinoleic, linoleic and arachidonic.
  • the mono- or diethanolamine salts of C8-C20 fatty acids for example the monoethanolamine salt of palm kernel fatty acid.
  • the soap may be added to the composition as a preformed soap or may be formed in situ by the reaction of the fatty acid with an appropriate base.
  • compositions of the present invention typically contain anionic and /or amphoteric surfactants in a proportion of total surfactant of up to 43% by weight, preferably 5% to 30% by weight, eg. 5% to 25% by weight.
  • the anionic surfactant preferably comprises a C10 ⁇ 18 eg. C10 ⁇ 14 alkyl benzene sulphonate e.g. in a total proportion of at least 5%, preferably 5 to 20% especially 5 to 15% most preferably 10 to 14% by weight.
  • the anionic surfactant may if desired alternatively or additionally comprise a C10 ⁇ 18 e.g. C10 ⁇ 14 alkyl polyoxyethylene sulphate having an average of from 1 to 20, preferably 2 to 4 ethoxy groups per molecule, in a proportion of at least 2%, preferably 5% to 10% by weight.
  • a particular advantage of the addition of such alkyl polyoxyethylene sulphates is that the payload of said compositions may be increased, and thus performance improved, without adversely affecting the properties of said compositions.
  • anionic surfactants which may be present include C8-C22 paraffin sulphonates and C8-C22 alkyl sulphates, and C8-C22 alkyl ether polycarboxylates having between 1 and 50 ethyleneoxy groups per molecule preferably 2-20 ethyleneoxy groups per molecule.
  • the surfactant may optionally, but preferably, comprise a minor amount, e.g. up to 5%, preferably 1 to 2% of amphoteric surfactant.
  • the preferred amphoterics are C8 ⁇ 18 alkyl dimethyl betaines.
  • Other amphoterics include amido amine betaines, alkyl imidazoline betaines and sulphobetaines.
  • the non-ionic surfactant is preferably an ethoxylated C8 ⁇ 20 eg. C10 ⁇ 14 alcohol having an average of from 5 to 50, preferably 6 to 20, most preferably 6 to 10 ethyleneoxy groups per molecule.
  • Other non-ionic surfactants include ethoxylated C8 ⁇ 20 fatty acids having the same preferred proportion of ethylene oxide and mixed ethoxylated propoxylated analogues of the aforesaid non-ionic surfactants having a ratio of propyleneoxy to ethyleneoxy groups between 0 and 0.5.
  • the surfactant may include an amine oxide, usually in a proportion up to 1%, or higher if low foaming characteristics are not important.
  • Other non-ionic surfactants include fatty alkyl mono- and di-ethanolamides.
  • the proportion of non-ionic surfactant is between 5% and 48% by weight of the composition, preferably between 7% and 35%, e.g. between 9% and 20%, such as between 10% and 15%.
  • the total weight % of surfactant is desirably 31 to 59% e.g. 40 to 55% especially 48 to 52%, based on the total weight of the composition.
  • the total proportion of dissolved electrolyte is preferably 7 to 15% by weight of the composition.
  • the electrolyte preferably comprises citrate and carbonate and optionally up to 4% of a phosphonate such as an aminotris (methylene phosphonate), ethylene diamine tetrakis (methylene phosphonate) or diethylene triamine pentakis (methylene phosphonate).
  • a phosphonate such as an aminotris (methylene phosphonate), ethylene diamine tetrakis (methylene phosphonate) or diethylene triamine pentakis (methylene phosphonate).
  • the composition contains at least 5% citrate and at least 2% carbonate by weight.
  • the compositions may optionally contain minor proportions eg. up to 5%, preferably up to 2% of acetate.
  • Electrolytes which may be present include such builders as silicates, nitrilotriacetates, pyrophosphates and ethylene diamine tetracetates, as well as other salts such as chlorides, bromides, formates, acetates and nitrates or buffers such as borates.
  • phosphates and/or condensed phosphates such as sodium hexametaphosphate, potassium pyrophosphate or sodium or potassium tripolyphosphate.
  • Phosphonates such as acetodiphosphonic acid salts or amino tris (methylenephosphonates), ethylene diamine tetrakis (methylene phosphonates) and diethylene triamine pentakis (methylene phosphonates), may also be used.
  • the electrolyte may be present in concentrations up to saturation, but we prefer that any non-functional component should not exceed its saturation concentration at 0 o C. For this reason the electrolyte should preferably not contain substantial proportions e.g. more than 2% by weight of sodium sulphate. Preferably the sodium sulphate content is below 1% by weight.
  • the total dissolved electrolyte concentration is typically between 2 and 20% by weight, more usually 4 to 18% e.g. 6 to 17% based on the total weight of the composition.
  • compositions of our invention should contain at least 2%, preferably at least 3%, more preferably at least 5%, most preferably at least 6%, especially at least 7%, sometimes at least 8% by weight of dissolved builder.
  • the balance of cations in the solution are preferably alkali metal more preferably sodium and/or potassium, especially sodium and potassium in atomic ratio of from 0.5:1 to 1:0.1.
  • compositions of our invention contain a minor amount, e.g. up to 2%, preferably 0.1 to 1% of a hydrotrope such as a lower alkyl benzene sulphonate e.g. sodium xylene sulphonate, sodium cumene sulphonate or sodium toluene sulphonate.
  • a hydrotrope such as a lower alkyl benzene sulphonate e.g. sodium xylene sulphonate, sodium cumene sulphonate or sodium toluene sulphonate.
  • compositions of our invention are preferably substantially free from solvents, which are not required for maintaining homogeneity and further, are environmentally undesirable. However, it is sometimes desired to include a small amount of volatile hydroxylic solvent such as ethanol (typically as industrial methylated spirits) as a perfume enhancer. Quantities up to 10% can be included, but less than 3%, e.g. less than 2.5% by weight are preferred.
  • compositions according to the invention typically include the usual minor ingredients such as perfume, colouring, optical brighteners, opacifiers, preservatives or enzymes, antiredeposition agents, or other polymers in conventional amounts.
  • compositions typically contain 20 to 60% by weight water, e.g. 30 to 50%, more usually 32 to 45%.
  • compositions of the invention the ingredients are mixed until a clear homogeneous liquid phase is obtained. If the composition tends to separate to give an opalescent G-phase layer, it should be diluted with a little water and/or ethanolamine until a stable, clear, single-phase composition has been obtained.
  • the formulations of the present invention are low viscosity Newtonian liquids.
  • the viscosity at 20°C of such compositions is less than 0.6 Pa s and greater than 0.03 Pa s, preferably between 0.05 Pa s and 0.5 Pa s between 0.12 Pa s and 0.35 Pa s, as measured at 21S ⁇ 1 shear rate by a controlled stress rheometer.
  • compositions of the present invention are non-shear dependent Newtonian liquids which are easily dispensed by automatic dosing equipment.
  • compositions of examples 1 and 2 were clear, homogeneous, isotropic liquids having a 1% solution pH of 8, a setting temperature at about -5 o C and viscosity at 21 sec ⁇ 1 and 20 o C of 0.3 Pa s and 0.2 Pa s respectively.
  • compositions of examples 3 and 4 were also clear, homogeneous, isotropic liquids having a 1% solution pH of 10.0, a setting temperature at about - 5°C and a viscosity at 21 s ⁇ 1 and 20°C of 0.13 Pa s for example 3.
  • compositions of examples 1 to 4 all gave excellent stain and soil removal on test cloths after washing under definite conditions in a standardised washing machine at 40°C and 60°C, at 200 ppm artificial total water hardness (calcium and magnesium hardness).
  • the degree of whiteness of the fabric, after treatment with said compositions was determined by reflectance measurement.
  • Standard soiled and stained cloths were supplied by the 'Swiss Federal Laboratories for materials testing and research - Switzerland' and by Washereiforfehung Krefeld (WFK) - Germany.
  • the cloths used for evaluation as hereinabove described are recognised as standard test cloths throughout the detergent industry. Tea, coffee and blackcurrant juice test cloths were prepared in-house, by manual staining of cloth. The test fabrics are measured for reflectance values before and after laundering.
  • the standard pre-stained cloths were all cotton, and were pre-stained either with a bleachable stain (tea, coffee, blackcurrant juice or red wine) or with an enzymatic stain (blood/milk/carbon).
  • example 2 provided an equivalent performance to that of a currently available leading commercial brand product. Both products have been evaluated under the same standardised test conditions.
  • the currently available commercial product contains a significant proportion of solvent. Therefore, the examples of the present invention provide equivalent soil and stain removal performance upon standard test cloths, under standardised conditions, but without the need for environmentally undesirable solvents.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
EP93116236A 1992-10-12 1993-10-07 Cleaning preparations Ceased EP0592947A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB929221377A GB9221377D0 (en) 1992-10-12 1992-10-12 Novel liquid cleaning preparations
GB9221377 1992-10-12
GB9224870 1992-11-27
GB929224870A GB9224870D0 (en) 1992-11-27 1992-11-27 Novel cleaning preparations

Publications (1)

Publication Number Publication Date
EP0592947A1 true EP0592947A1 (en) 1994-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116236A Ceased EP0592947A1 (en) 1992-10-12 1993-10-07 Cleaning preparations

Country Status (9)

Country Link
EP (1) EP0592947A1 (cs)
JP (1) JPH06192686A (cs)
KR (1) KR940009325A (cs)
CN (1) CN1088972A (cs)
AU (1) AU673000B2 (cs)
CA (1) CA2108116A1 (cs)
GB (1) GB2271574A (cs)
MY (1) MY118467A (cs)
TW (1) TW232709B (cs)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994029418A1 (de) * 1993-06-11 1994-12-22 Henkel Kommanditgesellschaft Auf Aktien Giessfähige flüssige wässrige reinigungsmittelkonzentrate ii
EP0785985A4 (en) * 1994-09-06 2000-08-16 Johnson & Son Inc S C SINGLE-PHASE SOAP PREPARATIONS
WO2001059051A1 (en) * 2000-02-07 2001-08-16 Unilever Plc Detergent compositions
WO2001079417A1 (en) * 2000-04-14 2001-10-25 Unilever N.V. Water soluble package and liquid contents thereof
US7030069B2 (en) 2003-12-05 2006-04-18 Unilever Home And Personal Care Usa Division Of Conopco, Inc. Liquid detergent composition
WO2017202796A1 (en) * 2016-05-24 2017-11-30 Unilever Plc Detergent compositions
WO2019240605A1 (en) 2018-06-12 2019-12-19 Statnii Igor Multifunctional poly methylamine surfactant and its method of preparation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8778862B2 (en) * 2012-05-22 2014-07-15 S.C. Johnson & Son, Inc. Concentrated cleaner in water-dissolvable pouch
CN109852495A (zh) * 2018-12-28 2019-06-07 北京绿伞化学股份有限公司 一种以天然原料为主的洗涤剂及其制备方法

Citations (6)

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Publication number Priority date Publication date Assignee Title
EP0104434A2 (de) * 1982-09-02 1984-04-04 Henkel Kommanditgesellschaft auf Aktien Flüssiges, von anorganischen Gerüstsalzen im wesentlichen freies Wasch- und Reinigungsmittel
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WO1994029418A1 (de) * 1993-06-11 1994-12-22 Henkel Kommanditgesellschaft Auf Aktien Giessfähige flüssige wässrige reinigungsmittelkonzentrate ii
US5756442A (en) * 1993-06-11 1998-05-26 Henkel Kommanditgesellschaft Auf Aktien Pourable liquid, aqueous cleaning concentrates II
EP0785985A4 (en) * 1994-09-06 2000-08-16 Johnson & Son Inc S C SINGLE-PHASE SOAP PREPARATIONS
WO2001059051A1 (en) * 2000-02-07 2001-08-16 Unilever Plc Detergent compositions
WO2001079417A1 (en) * 2000-04-14 2001-10-25 Unilever N.V. Water soluble package and liquid contents thereof
US7030069B2 (en) 2003-12-05 2006-04-18 Unilever Home And Personal Care Usa Division Of Conopco, Inc. Liquid detergent composition
WO2017202796A1 (en) * 2016-05-24 2017-11-30 Unilever Plc Detergent compositions
WO2019240605A1 (en) 2018-06-12 2019-12-19 Statnii Igor Multifunctional poly methylamine surfactant and its method of preparation
KR20210019428A (ko) * 2018-06-12 2021-02-22 이고르 스태트니 다작용성 폴리 메틸아민 계면활성제 및 이의 제조 방법
US20210230366A1 (en) * 2018-06-12 2021-07-29 Igor STATNÎI Multifunctional poly methylamine surfactant and its method of preparation
IL278507B1 (en) * 2018-06-12 2024-05-01 STATNII Igor Multifunctional poly methylamine surfactant and its method of preparation
IL278507B2 (en) * 2018-06-12 2024-09-01 STATNII Igor Multifunctional poly methylamine surfactant and its method of preparation

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KR940009325A (ko) 1994-05-20
MY118467A (en) 2004-11-30
CN1088972A (zh) 1994-07-06
TW232709B (cs) 1994-10-21
GB2271574A (en) 1994-04-20
AU4896093A (en) 1994-04-28
CA2108116A1 (en) 1994-04-13
JPH06192686A (ja) 1994-07-12
AU673000B2 (en) 1996-10-24
GB9320802D0 (en) 1993-12-01

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