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EP0692018A1 - Produits liquides de nettoyage - Google Patents

Produits liquides de nettoyage

Info

Publication number
EP0692018A1
EP0692018A1 EP94911896A EP94911896A EP0692018A1 EP 0692018 A1 EP0692018 A1 EP 0692018A1 EP 94911896 A EP94911896 A EP 94911896A EP 94911896 A EP94911896 A EP 94911896A EP 0692018 A1 EP0692018 A1 EP 0692018A1
Authority
EP
European Patent Office
Prior art keywords
weight
sodium metasilicate
composition
compositions
aqueous liquid
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.)
Granted
Application number
EP94911896A
Other languages
German (de)
English (en)
Other versions
EP0692018B1 (fr
Inventor
Josephus Marie Hormann
Mark Phillip Houghton
Rudolf Cornelis S. Verheul
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.)
Diversey Inc
Original Assignee
Unilever PLC
Unilever NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP0692018A1 publication Critical patent/EP0692018A1/fr
Application granted granted Critical
Publication of EP0692018B1 publication Critical patent/EP0692018B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0004—Non aqueous liquid compositions comprising insoluble particles
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/08—Silicates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads

Definitions

  • the present invention relates to liquid non-aqueous cleaning products, especially substantially non-aqueous liquid detergent compositions containing particulate solid materials.
  • substantially non-aqueous liquids are those containing little or no water.
  • Non-aqueous detergent liquids have been proposed for a number of uses, such as fabric washing and dishwashing. They have advantages over powder products in that they are more rapidly dispersed in water. Further advantages over powder products are the possibility of automatic dosing and higher obtainable product densities, resulting in lower transportation and packaging costs.
  • Non-aqueous detergent liquids have advantages over aqueous liquid products in that they are capable of including water-sensitive ingredients such as bleaches.
  • non-aqueous liquid detergent compositions comprising sodium metasilicate, having an improved stability against sedimentation of the particulate solid material suspended therein and having a reduced tendency to clear layer separation upon storage, can be formulated by including therein a metal oxide having a bulk density of 200 to 1000 g/1.
  • WO 91/12312 relates to a non-aque ⁇ us liquid cleaning product comprising particles of solid material dispersed in a solvent, a deflocculant material, and a hydrophobically modified silica containing dispersant, whereby the stability of the product is shown to be improved by said dispersant.
  • This patent document does, however, not disclose non-aqueous liquid compositions containing considerable amounts of alkaline material, such as sodium metasilicate, which are contained in the non- aqueous liquid composition according to the present invention.
  • Detergent compositions suitable for use in industrial washing machines generally contain a considerable level of material which gives a high alkalinity in the wash liquor. This type of material is often referred to as either buffer salt or alkalinity booster. It is known that sodium metasilicate may effectively perform the function of both builder material and alkalinity booster. Therefore, sodium metasilicate is a preferred component of industrial detergent products.
  • non-aqueous liquid detergent composition having a good viscosity and stability against sedimentation, and containing considerable amounts of anhydrous sodium metasilicate.
  • the present invention provides a substantially non-aqueous liquid detergent composition comprising a liquid phase and a particulate solid phase dispersed therein, said solid phase comprising from 10 to 60% by weight of sodium metasilicate and from 0.1 to 10% by weight of a hydrophobically modified silica containing dispersant, both concentration ranges being based on the total weight of the composition, said sodium metasilicate containing less than 8% by weight of water.
  • the present invention also relates to the use of hydrophobically modified silica as a stabilising agent in a substantially non-aqueous liquid detergent composition comprising sodium metasilicate, said metasilicate containing less than 8% by weight of water.
  • compositions according to the present invention are substantially non-aqueous liquid cleaning products.
  • references to liquids refer to materials which are fluid at 25°C at atmospheric pressure.
  • compositions are substantially non-aqueous, i.e. they contain little or no free water, generally less than 10% by weight, preferably less than 3% by weight, more preferably less than 1% by weight. It has been found that the higher the water content, the more likely it is for the viscosity to be too high, or even for setting to occur. Setting is characterised by an increase in product viscosity during storage as a result of the reversible build-up of a structure within the non-aqueous liquid with time. Setting could eventually result in a product which cannot be poured or pumped without prior shaking or stirring.
  • compositions of the invention have a viscosity of less than 2,500 mPa.s at a shear rate of 21 S _1 , a viscosity range of 500-2,000 mPa.s being more preferred (as measured on a Haake rotoviscometer RV20 with a mv2p head at 25°C after 5 minutes) .
  • the viscosity is in between 1000 and 2000 mP.s at 21 S "1 , as measured using the same method.
  • compositions according to the invention may be formulated in a very wide range of specific forms according to the intended use. They may be formulated as cleaners for hard surfaces (with or without abrasive) or as agents for warewashing either by hand or by mechanical means. They may also be formulated as agents for washing and/or conditioning of fabrics. Those last-mentioned products constitute an especially preferred form of the present invention because in that role there is a very great need to be able to incorporate substantial amounts of various kinds of solids. These compositions may be of the kind used for pre-treatment of fabrics with the composition, neat or diluted, before they are rinsed or subjected to a main wash. The compositions may also be formulated as main wash products, being dissolved and/or dispersed in the water with which the fabrics are contacted.
  • compositions will contain at least one agent which promotes the cleaning and/or conditioning of the article(s) in question, selected according to the intended application.
  • this agent will be selected from surfactants, enzymes, bleaches, microbiocides (for fabrics) fabric softening agents and (in the case of hard-surface cleaning) abrasives.
  • surfactants for fabrics
  • bleaches for fabrics
  • microbiocides for fabrics
  • fabric softening agents for hard-surface cleaning
  • abrasives in many cases more than one of these agents will be present, as well as other ingredients commonly used in the relevant product form.
  • the sodium metasilicate concentration of sodium metasilicate in a non-aqueous liquid detergent composition according to the invention is generally in the range of 10-60% by weight, preferably 25-55% by weight, more preferably 30-55% by weight, of the composition.
  • the type of sodium metasilicate applied in compositions of the invention is substantially anhydrous sodium metasilicate which most preferably consists of sodium oxide, silicon dioxide, about 0-3 % by weight of carbon dioxide, and about 2-3% by weight of water, whereby the molar ratio of sodium oxide to silicon dioxide is in the range from 0.8 to 1.2.
  • This type of sodium metasilicate typically consists of 50.5 ⁇ 2.0% by weight of sodium oxide, 45.5 ⁇ 2.0% by weight of silicon dioxide, 1.5% by weight of carbon dioxide and 2.5% by weight of water.
  • the water content of the sodium metasilicate should not exceed an upper level of 8% by weight, more preferably 5% by weight, a maximum water content of 3% by weight being most preferred.
  • the type of sodium metasilicate applied in the non-aqueous liquid composition of the invention is, preferably, substantially crystalline sodium metasilicate.
  • This type of sodium metasilicate may contain at most 10% by weight, preferably 1% by weight of amorphous sodium metasilicate having no crystalline order.
  • substantially crystalline sodium metasilicate is defined as material that shows at most 10% by weight of said material having no crystalline order when applying X-ray crystallography techniques.
  • the detergent compositions of the invention contain the liquid phase in an amount of at least 10% by weight of the total composition.
  • the amount of the liquid phase present in the composition may be as high as about 90% by weight, but in most cases the practical amount will lie between 20 and 70% and preferably between 35 and 50% by weight of the composition.
  • the liquid phase comprises liquid nonionic surfactant.
  • the liquid phase preferably contains from 30 to 50% by weight of liquid nonionic surfactant.
  • lower liquid nonionic surfactant levels are generally applied, typically less than 10% by weight, preferably between 1 and 3% by weight of the total formulation.
  • the rest of the liquid phase may in this case contain a solvent as described below.
  • the total solids content of compositions according to the invention is generally in the range of from 10 to 90%, but in most cases the practical total solids conte ⁇ t will be in the range of from 30 to 80% by weight of the total composition, a range of from 50 to 65% by weight being more preferred. Most preferably, the total solids content does not exceed 40% by volume of the total composition.
  • the solid phase is generally in particulate form and usually has a weight average particle size of less than 300 microns, preferably less than 200 microns, more preferably less than 100 microns, especially less than 10 microns.
  • the particle size may even be of sub-micron size.
  • the proper particle size can be obtained by using materials of the appropriate size or by milling the total product in a suitable milling apparatus.
  • compositions of the invention comprise hydrophobically modified (HM) silica as a dispersant material.
  • a dispersant material is a material whose main purpose is to stabilise the composition.
  • HM-dispersant materials such as HM-modified silica, are particulate materials, of which the outer surface has been chemically treated to reduce the hydrophilic nature thereof.
  • the number of hydroxy and/or acid groups at the surface of the HM silica particles is reduced by a hydrophobing treatment.
  • Suitable reactions include esterification or etherification of the hydrophilic groups present at the outer surface of the particles.
  • the hydrophobing treatment involves at least 10%, more preferably from 40 to 95%, most preferably from 50 to 90%, of these hydrophilic groups. Partial hydrophobing is preferred over complete hydrophobation.
  • the hydrophobation of the silica particles preferably involves the substitution of the free hydroxy groups at the outer surface thereof by less hydrophilic groups. More preferably, the surface hydroxy groups are substituted by short alkyl groups, e.g. by methyl groups.
  • Preferred HM silica-containing dispersant materials have a weight average particle size of from 0.005 to 10 microns, more preferably 0.01 to 5 microns, most preferably 0.01 to 3 microns.
  • the level of HM silica-dispersant material is suitably from 0.1 to 10% by weight, preferably 0.3 to 5% by weight, more preferably 0.5 to 3% by weight of the composition.
  • the non-aqueous liquids of the invention will generally contain one or more surfactant agents.
  • surfactants are solids, they will usually be dispersed or dissolved in the liquid phase. Where they are liquid, they will usually constitute all or part of the liquid phase. However, in some cases the surfactants may undergo a phase change in the composition.
  • surfactants for use in the compositions of the invention 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. II, by Schwartz, Perry & Berch (Interscience 1959) , in the current edition of "McCutcheon's Emul ⁇ ifiers & Detergents” published by the McCutcheon division of Manufacturing Confectioners Company or in "Tensid-Taschenbuch” , H. Stache, 2nd Edn. , Carl Hanser Verlag, M ⁇ nchen & Wien, 1981.
  • alkyl refers to a straight or branched alkyl moiety having from 1 to 30 carbon atoms
  • lower alkyl refers to a straight or branched alkyl moiety of from 1 to 4 carbon atoms.
  • Nonionic detergent surfactants are well known in the art. They normally consist of a water-solubilising polyalkoxylene or a mono- or di-alkanolamide group in chemical combination with an organic hydrophobic group derived, for example, from alkylphenols in which the alkyl group contains from about 6 to about 12 carbon atoms, dialkylphenols in which each alkyl group contains from 6 to 12 carbon atoms, primary, secondary or tertiary aliphatic alcohols (or alkyl-capped derivatives thereof) , preferably having from 8 to 20 carbon atoms, monocarboxylic acids having from 10 to about 24 carbon atoms in the alkyl group and polyoxy propylenes.
  • fatty acid mono- and dialkanolamides in which the alkyl group of the fatty acid radical contains from 10 to about 20 carbon atoms and the alkyoyl group having from 1 to 3 carbon atoms.
  • the alkyl group of the fatty acid radical contains from 10 to about 20 carbon atoms and the alkyoyl group having from 1 to 3 carbon atoms.
  • the polyalkoxylene moiety preferably consists of from 2 to 20 groups of ethylene oxide or ethylene oxide and propylene oxide groups.
  • particularly preferred are those described in Applicants' published European specification EP-A-225, 654 , especially for use as all or part of the liquid phase.
  • ethoxylated nonionics which are the condensation products of fatty alcohols with from 9 to 15 carbon atoms condensed with from 3 to 11 moles of ethylene oxide.
  • condensation products of C 11 _ 13 alcohols with (say) 3 to 7 moles of ethylene oxide may be used as the sole nonionic surfactant or in combination with those described in the last-mentioned European specification, especially as all or part of the liquid phase.
  • suitable nonionics comprise the alkyl polysaccharides (polyglycosides/oligosaccharides) such as described in any of specifications US-A-3,640,998; US-A-3,346,558; US-A-4,223,129; EP-A-92,355; EP-A-99,183.
  • nonionic detergent surfactants may also be used.
  • Mixtures of nonionic detergent surfactants with other detergent surfactants such as anionic, cationic or ampholytic detergent surfactants and soaps may also be used.
  • the level of nonionic surfactants is from 10 to 90% by weight of the composition, preferably from 20 to 70%, most preferably from 35 to 50% by weight.
  • anionic detergent surfactants suitable to be included in compositions according to the present invention are alkali metal, alkaline earth metal, ammonium or alkylol amine salts of alkylbenzene sulphonates having from 10 to 18 carbon atoms in the alkyl group, alkyl and alkylether sulphates having from 10 to 24 carbon atoms in the alkyl group, the alkylether sulphates having from 1 to 5 ethylene oxide groups, and olefin sulphonates prepared by sulphonation of C 10 _ 24 alpha-olefins and subsequent neutralisation and hydrolysis of the sulphonation reaction product.
  • the level of anionic surfactants is in between 1 and 15% by weight of the composition, more preferably between 2 and 10% by weight.
  • anionic surfactants will either be liquid, in which case, in the composition they will constitute all or part of the liquid phase, or .they will be solid, in which case, in the composition they will either be dispersed in the liquid phase or they will be dissolved therein.
  • solids is to be construed as referring to materials in the solid phase which are added to the composition and are dispersed therein in solid form, those solids which dissolve in the liquid phase and those in the liquid phase which solidify (undergo a phase change) in the composition, wherein they are then dispersed.
  • the detergency builder present in compositions according to the invention may include any material capable of reducing the level of free calcium and magnesium ions in the wash liquor and will preferably provide the composition with other beneficial properties such as the generation of an alkaline pH and the suspension of soil removed from the fabric.
  • the level of the total amount of detergency builder including sodium metasilicate present in compositions according to the invention may be from 10 to 70% by weight, preferably from 30 to 60% by weight.
  • Suitable builders comprise both inorganic and organic builders. They may also be subdivided into the phosphorus- containing and non-phosphorus types, the latter being preferred when environmental considerations are important.
  • the inorganic builders comprise the various phosphate-, carbonate-, silicate-, borate- and aluminosilicate-type materials, particularly the alkali metal salt forms. Mixtures of these may also be used.
  • Examples of phosphorus-containing inorganic builders when present, include the water-soluble salts, especially alkali metal pyrophosphates, orthophosphates, polyphosphates and phosphonates.
  • Specific exam.RT.es of inorganic phosphate builders include sodium and potassium tripolyphosphates, phosphates and hexametaphosphates.
  • non-phosphorus-containing inorganic builders when present, include water-soluble alkali metal carbonates, bicarbonates, borates, silicates, and. crystalline and amorphous silicates. Specific examples include sodium carbonate (with or without calcite seeds) , potassium carbonate, sodium and potassium bicarbonates, and zeolites.
  • suitable organic builders include the alkali metal, ammonium and substituted ammonium, citrates, succinates, malonates, fatty acid sulphonates, carboxymetoxy succinates, ammonium polyacetates, carboxylates, polycarboxylates, aminopolycarboxylates, polyacetyl carboxylates and polyhydroxy sulphonates.
  • Specific examples include sodium, potassium, lithium, ammonium and substituted ammonium salts of ethylene diamine tetraacetic acid, nitrilotriacetic acid, oxydisuccinic acid, melitic acid, benzene polycarboxylic acids and citric acid.
  • organic phosphonate-type sequestering agents such as those sold by Monsanto under the tradename of the Dequest range.
  • suitable organic builders include the higher molecular weight polymers and co-polymers known to have builder properties, for example appropriate polyacrylic acid, polymaleic acid and polyacrylic/polymaleic acid copolymers and their salts, particularly those sold by BASF under the Sokalan Trade Mark.
  • suitable organic builders of this type are acrylate/methacrylate copolymers and homopolymers which may also be added as stabilisers against sedimentation and for anti-ashing and anti-redeposition purposes.
  • bleach-containing, substantially non-aqueous liquid detergent compositions could be obtained when applying the afore-described hydrophobically modified silica as a constituent thereof.
  • Bleaches which are suitable for non-aqueous compositions of the invention include the halogen, particularly chlorine bleaches such as provided in the form of alkali metal hypohalites, e.g. hypochlorites.
  • the oxygen bleaches are preferred, for example in the form of an inorganic persalt, preferably with a bleach precursor, or as a peroxy acid compound .
  • the activator makes the bleaching more effective at lower temperatures, i.e. in the range from ambient temperatures to about 60°C, so that such bleach systems are commonly known as low-temperature bleach systems. They are well known in the art.
  • the inorganic persalt such as sodium perborate monohydrate, acts to release active oxygen in solution, and the activator is usually an organic compound having one or more reactive acyl residues, which cause the formation of peracids, the latter providing for a more effective bleaching action at lower temperature than the peroxybleach compound alone.
  • the ratio by weight of the peroxybleach compound to the bleach activator is generally from about 20:1 to about 1:1, preferably from about 10:1 to about 2:1, most preferably from 5:1 to 3.5:1. Whilst the amount of the bleach system, i.e. peroxybleach compound and activator, may be varied between about 5% and about 35% by weight of the total non- aqueous liquid, it is preferred to use from about 6% to about 30% by weight of the ingredients forming the bleach system. Thus the preferred level of the peroxybleach compound in the composition is between about 5.5% and about 27% by weight, while the preferred level of the activator is between about 0.5% and 14% by weight, most preferably between about 1% and about 5% by weight.
  • Suitable peroxy bleach compounds are alkali metal perborates, both tetrahydrates and monohydrates, alkali metal percarbonate ⁇ , persilicates and perphosphates, of which sodium perborate and, particularly, sodium percarbonate are preferred.
  • Preferred activator materials are TAED and glycerol triacetate.
  • compositions of the invention containing a bleach or bleach system, a stabiliser for the bleach or bleach system, for example ethylene diamine tetramethylene phosphonate and diethylene triamine pentamethylene phosphonate or other appropriate organic phosphonate or salt thereof, such as the Dequest range hereinbefore described.
  • a stabiliser for the bleach or bleach system for example ethylene diamine tetramethylene phosphonate and diethylene triamine pentamethylene phosphonate or other appropriate organic phosphonate or salt thereof, such as the Dequest range hereinbefore described.
  • These stabilisers can be used in acid or salt form, such as the magnesium, calcium, zinc or aluminium salt form.
  • the stabiliser may be present at a level of up to about 1% by weight, preferably between about 0.1 and about 0.5% by weight.
  • compositions of the invention also comprise a deflocculant material.
  • a deflocculant material any material may be used as a deflocculant provided that it fulfils the deflocculation test described in EP-A-266,199 (Unilever).
  • the capability of a substance to act as a deflocculant will partly depend on the solids/liquid phase combination.
  • Especially preferred deflocculants are acids.
  • deflocculants include the alkanoic acids such as acetic, propionic and stearic acid and their halogenated counterparts such as trichloroacetic and trifluoracetic as well as the alkyl (e.g. metharie) sulphonic acids and aralkyl (e.g. paratoluene) sulphonic acids.
  • alkanoic acids such as acetic, propionic and stearic acid and their halogenated counterparts such as trichloroacetic and trifluoracetic as well as the alkyl (e.g. metharie) sulphonic acids and aralkyl (e.g. paratoluene) sulphonic acids.
  • suitable inorganic mineral acids and their salts are hydrochloric, carbonic, sulphurous, sulphuric, and phosphoric acids; potassium monohydrogen sulphate, sodium monohydrogen sulphate, potassium monohydrogen phosphate, potassium dihydrogen phosphate, sodium monohydrogen phosphate, potassium dihydrogen pyrophosphate.
  • organic acids may also be used as deflocculants, for example formic, lactic, amino acetic, benzoic, salicylic, phthalic, nicotinic, ascorbic, ethylene diamine tetraacetic, and aminophosphonic acids, as well as longer- chain fatty carboxylates and triglycerides, such as oleic, stearic, lauric acid and the like.
  • Peracids such as percarboxylic and persulphonic acids, may also be used.
  • fatty anions are very suitable deflocculants, and a particularly preferred class of deflocculants comprises anionic surfactants.
  • anionics which are salts of alkali or other metals may be used, particularly preferred are the free acid forms of these surfactants (wherein the metal cation is replaced by an H + -cation, i.e. proton) .
  • These anionic surfactants include all those classes, sub ⁇ classes and specific forms described in the afore-mentioned general references on surfactants, viz. Schwartz & Perry, Schwartz Perry and Berch, McCutcheon's, Tensid-Taschenbuch. Many anionic surfactants have already been described hereinbefore. In the role of deflocculants, the free acid forms of these are generally preferred.
  • some preferred sub-classes and examples are the C 10 -C 22 fatty acids and dimers thereof, the.C 8 _ c 18 alkylbenzene sulphonic acids,the C 10 -C 18 alkyl or alkylether sulphuric acid monoesters, the C 12 -C 18 paraffin sulphonic acids, the fatty acid sulphonic acids, the benzene, toluene, xylene, and cumene sulphonic acids and so on.
  • the level of the deflocculant material in the composition can be optimised by the means described in the afore- mentioned EP-A-266,199, but in very many cases this level is at least 0.01%, usually 0,1% and preferably at least 1% by weight, and may be as high as 15% by weight. For most practical purposes, the amount ranges from 1-12%, preferably from 2-6% by weight, based on the total non- aqueous composition.
  • the antifoaming agent is the antifoaming agent
  • compositions according to the invention In view of the foaming behaviour of compositions according to the invention, good results with respect to foam reduction were obtained when using a combination of a hydrocarbon wax and an alkyl phosphate as an anti-foaming agent. It appeared that good defoaming characteristics can be obtained after both separate and combined addition of these compounds to a composition of the invention.
  • silicone oil based compositions containing high and low viscosity oil, particularly high-viscosity silicone oil with a viscosity greater than 10000 Mp.s at 25°C and a shear rate of 21 S "1 may be effectively used as antifoaming agents. Miscellaneous other ingredients
  • compositions of the invention comprise those remaining ingredients which may be used in liquid cleaning products.
  • ingredients which may be present in compositions of the invention comprise those remaining ingredients which may be used in liquid cleaning products.
  • fabric conditioning agents include enzymes, perfumes (including deoperfumes) , microbiocides, coloring agents, fluorescers, soil-suspending agents (anti-redeposition agents) , corrosion inhibitors, enzyme-stabilising agents, and lather depressants.
  • fabric conditioning agents which may be used, either in fabric washing liquids or in rinse conditioners, are fabric softening materials such as fabric softening clays, quaternary ammonium salts, imidazolinium salts, fatty amines and cellulases.
  • Enzymes which may be used in non-aqueous liquids according to the present invention include proteolytic enzymes, amylolytic enzymes and lipolytic enzymes (lipolases) .
  • proteolytic enzymes amylolytic enzymes and lipolytic enzymes (lipolases) .
  • lipolytic enzymes lipolytic enzymes
  • proteolytic enzymes and amylolytic enzymes are known in the art and are commercially available. They may be incorporated for instance as “prills", “marumes” or suspensions.
  • the fluorescent agents which may be used in the non-aqueous liquid detergent products according to the invention are well known and many such fluorescent agents are available commercially. Usually, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, the sodium salts.
  • the total amount of the fluorescent agent or agents used in composition of the invention is generally from 0.02-2% by weight.
  • anti-redeposition agents when it is desired to include anti-redeposition agents in a non-aqueous liquid of the invention, the amount thereof is normally from about 0.1% to about 5% by weight, preferably from about 0.2% to about 2.5% by weight of the total liquid composition.
  • Preferred antiredeposition agents include carboxy derivatives of sugars celluloses, e.g. sodium carboxy ethyl cellulose, anionic polyelectrolytes, especially polymeric aliphatic carboxylates, or organic phosphonates.
  • compositions according to the present invention may be used for several detergency purposes, for example the cleaning of surfaces and the washing of fabrics.
  • an aqueous liquor containing from 0.1 to 10% by weight, more preferably 0.2 to 2% by weight, of the non-aqueous detergent composition of the invention is used.
  • all raw materials should be dry and (in the case of hydratable salts) in a low hydration state, e.g. anhydrous phosphate builder, sodium perborate monohydrate and dry calcite abrasive, where these are employed in the non-aqueous composition.
  • a low hydration state e.g. anhydrous phosphate builder, sodium perborate monohydrate and dry calcite abrasive, where these are employed in the non-aqueous composition.
  • the dry, substantially anhydrous solids are blended with the liquid phase in a dry vessel. If deflocculant materials are used, these should preferably - at least partly - be mixed with the liquid phase, prior to the addition of the solids. In order to minimize the rate of sedimentation of the solids, this blend is passed through a grinding mill or a combination of mills, e.g.
  • a colloid mill a corundum disc mill, a horizontal or vertical agitated ball mill, to achieve a particle size of 0.1 to 100 ⁇ m, preferably 0.5 to 50 ⁇ m, ideally 1 to 10 ⁇ m, as calculated by the D 3 2 measure.
  • a preferred combination of such mills is a colloid mill followed by a horizontal ball mill since these can be operated under the conditions required to provide a narrow particle size distribution in the final non-aqueous liquid product.
  • particulate material already having the desired particle size need not be subjected to this procedure and, if desired, can be incorporated during a later stage of processing.
  • the energy input results in a temperature rise in the product and the liberation of air entrapped in or between the particles of the solid ingredients. It is, therefore, highly desirable to mix any heat-sensitive ingredients into the product after the milling stage and a subsequent cooling step. It may also be desirable to de-aerate the product before addition of these (usually minor) ingredients and optionally, at any other stage of the process.
  • Typical ingredients which might be added at this stage are perfumes and enzymes, but might also include highly temperature sensitive bleach components or volatile solvent components which may be desirable in the final composition.
  • volatile material be introduced after any step of de-aeration.
  • Suitable equipment for cooling (e.g. heat exchangers) and de- aeration will be known to those skilled in the art.
  • Alfl6/Wax 2:1 Defoaming agent consisting of alkyl phosphate and hydrocarbon wax, in a weight ratio of 2:1, ex Harcros/Ter Hell MgO Magnesium oxide, ex Merck SCMC Sodium Carboxy methyl cellulose, ex AKZO
  • Sokalan CP7 Acrylic acid/maleic acid copolymer in the sodium salt form ex BASF CaO Calcium oxide, ex Baker Chemical Co.
  • non-aqueous detergent compositions were prepared by mixing the ingredients in the order stated. It can be noted that the total solid phase level was slightly reduced when more HM silica (i.e. Sypernat D17) was included in the liquid composition. This is caused by the significantly lower density, and consequently higher specific volume of the Sypernat D17 as compared to crystalline sodium metasilicate. Sypernat D17 has a density of about 150 kg/m 3 , whereas the density of the crystalline applied SMS is roughly 1200 kg/m 3 . The ingredients were milled to give a mean particle size of 8 ⁇ m (by the D 3 2 measure) .
  • the tendency of the composition to give clear layer separation was determined by filling a 500 ml tall polyethylene closable container with the composition, allowing it to stand without agitation for 4 weeks at 37°C and then measuring the height of any visible distinct upper layer. As can be noticed, this measure of the stability of each composition is shown in Table 1. The viscosities, as measured after one week using a Haake rotoviscometer at a shear rate of 21 s-l at 25°C after 5 minutes, of each composition are also given.
  • Viscosity ( mPa.s) (measured at 21 S “1 ) 1700 1693 1984 1836
  • Viscosity ( mPa.s) (measured at 21 S "1 ) 1260 1663

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Composition détersive liquide, sensiblement non aqueuse, facile à traiter, coulante et très stable. Elle comporte une phase liquide et une phase solide particulaire dispersée dans cette phase liquide. Ladite phase solide comporte de 10 à 60 % en poids de métasilicate de sodium et de 0,1 à 10 % en poids d'une silice modifiée de manière hydrophobe, les deux plages de concentration susmentionnées étant calculées sur la base du poids total de la composition détersive, et ledit métasilicate de sodium renfermant moins de 8 % en poids d'eau.
EP94911896A 1993-03-31 1994-03-15 Produits liquides de nettoyage Expired - Lifetime EP0692018B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9306901 1993-03-31
GB939306901A GB9306901D0 (en) 1993-03-31 1993-03-31 Liquid cleaning products
PCT/EP1994/000822 WO1994023009A1 (fr) 1993-03-31 1994-03-15 Produits liquides de nettoyage

Publications (2)

Publication Number Publication Date
EP0692018A1 true EP0692018A1 (fr) 1996-01-17
EP0692018B1 EP0692018B1 (fr) 1997-11-12

Family

ID=10733227

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EP94911896A Expired - Lifetime EP0692018B1 (fr) 1993-03-31 1994-03-15 Produits liquides de nettoyage

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EP (1) EP0692018B1 (fr)
AU (1) AU694421B2 (fr)
BR (1) BR9405857A (fr)
CA (1) CA2159607A1 (fr)
DE (1) DE69406781T2 (fr)
ES (1) ES2108987T3 (fr)
FI (1) FI113546B (fr)
GB (1) GB9306901D0 (fr)
NO (1) NO307346B1 (fr)
TR (1) TR28230A (fr)
WO (1) WO1994023009A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8339234B2 (en) 2008-06-30 2012-12-25 Coil Holding Gmbh Inductance coil for electric power grids with reduced sound emission

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3255931B2 (ja) † 1996-06-28 2002-02-12 ザ、プロクター、エンド、ギャンブル、カンパニー 特定のアルキルベンゼンスルホネート界面活性剤を含有する非水性洗剤組成物
EP2063757A1 (fr) * 2006-09-15 2009-06-03 Reckitt Benckiser Inc. Article de nettoyage comprenant une éponge en mousse de mélamine
US9376648B2 (en) * 2008-04-07 2016-06-28 The Procter & Gamble Company Foam manipulation compositions containing fine particles
US8933131B2 (en) 2010-01-12 2015-01-13 The Procter & Gamble Company Intermediates and surfactants useful in household cleaning and personal care compositions, and methods of making the same
EP2675784B1 (fr) 2011-02-17 2017-09-13 The Procter and Gamble Company Sulfonates d'alkylphényle linéaires d'origine biologique
CA2827627C (fr) 2011-02-17 2016-10-11 The Procter & Gamble Company Compositions comprenant des melanges de sulfonates d'alkylphenyle c10-c13
CN106702800B (zh) * 2016-12-30 2019-02-26 中国科学院过程工程研究所 一种用质子型离子液体去除秸秆木质素和半纤维素的方法

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GB2239873A (en) * 1990-01-16 1991-07-17 Unilever Plc Non-aqueous liquid detergents
DE69116865T2 (de) * 1990-02-16 1996-06-27 Unilever N.V., Rotterdam Flüssige reinigungsprodukte
DE69100402T2 (de) * 1990-02-16 1994-01-13 Unilever Nv Flüssige reinigungsprodukte.
NZ238047A (en) * 1990-05-07 1993-12-23 Colgate Palmolive Co Nonaqueous liquid automatic dihwashing detergent comprising silica,
GB9108665D0 (en) * 1991-04-23 1991-06-12 Unilever Plc Liquid cleaning products
GB9124489D0 (en) * 1991-11-18 1992-01-08 Unilever Plc Liquid cleaning products

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9423009A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8339234B2 (en) 2008-06-30 2012-12-25 Coil Holding Gmbh Inductance coil for electric power grids with reduced sound emission

Also Published As

Publication number Publication date
FI113546B (fi) 2004-05-14
BR9405857A (pt) 1995-12-12
DE69406781T2 (de) 1998-04-02
NO953902L (no) 1995-11-28
NO953902D0 (no) 1995-09-29
TR28230A (tr) 1996-02-16
CA2159607A1 (fr) 1994-10-13
AU694421B2 (en) 1998-07-23
EP0692018B1 (fr) 1997-11-12
DE69406781D1 (de) 1997-12-18
FI954629L (fi) 1995-11-17
WO1994023009A1 (fr) 1994-10-13
FI954629A0 (fi) 1995-09-29
GB9306901D0 (en) 1993-05-26
NO307346B1 (no) 2000-03-20
ES2108987T3 (es) 1998-01-01
AU6426694A (en) 1994-10-24

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