EP1478722B1 - Flüssige reinigungsmittel - Google Patents

Flüssige reinigungsmittel Download PDF

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Publication number
EP1478722B1
EP1478722B1 EP03742866A EP03742866A EP1478722B1 EP 1478722 B1 EP1478722 B1 EP 1478722B1 EP 03742866 A EP03742866 A EP 03742866A EP 03742866 A EP03742866 A EP 03742866A EP 1478722 B1 EP1478722 B1 EP 1478722B1
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EP
European Patent Office
Prior art keywords
antioxidant
cleaning composition
weight
liquid cleaning
hydrogen peroxide
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.)
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EP03742866A
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English (en)
French (fr)
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EP1478722A1 (de
Inventor
Alexander T. Unilever R&D Port Sunlight ASHCROFT
Carlo J. Lever Fabergé Italia SRL VAN DEN BERGH
Annalisa Lever Fabergé Italia SRL SCHIAVINA
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Unilever PLC
Unilever NV
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Unilever PLC
Unilever NV
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Priority to EP03742866A priority Critical patent/EP1478722B1/de
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0084—Antioxidants; Free-radical scavengers
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces

Definitions

  • the present invention relates to liquid cleaning compositions comprising antioxidants and peroxides and to a process for cleaning hard surfaces using these compositions.
  • Household surfaces are normally cleaned using compositions which contain one or more ingredients which assist removal of fatty/oily/greasy soil and/or any visible staining such as from associated solid debris or coloured material.
  • Such compositions may be applied neat or in dilute solution, by pouring or as a spray, such as from a trigger spray dispenser or other aerosol applicator, and rubbed with a cloth or other wipe, optionally followed by rinsing.
  • JP-A-07/228,892 discloses hard surface cleansing compositions comprising anionic and amphoteric surfactants, a mono- or polyhydric alcohol and from 0.1% to 7% by weight of a tea leaf extract. Tannins are commonly known to be an ingredient of tea, but tannic acid (an antioxidant) is present only in very small quantities in such extracts. Tannins are said to generally adversely affect cleaning, especially of oily soil.
  • US 5,965,514 discloses mildly acidic hard surface cleaning compositions containing amine oxide surfactant, quaternary disinfectant and a nitrogen-containing chelating agent.
  • Ascorbic acid is mentioned among a large number of possible acids to provide acidity, but not among the preferred ones.
  • Tannic acid is mentioned as one of a large number of optional possible acids useful as surface tension reducing agents.
  • An antifogging agent for glass is described in JP-A-49/113,811. This comprises by weight, 3% dialkyl sulfosuccinate anionic surfactant, 4% higher secondary alkoxyethyl sulfate anionic surfactant, 1% tannic acid, 10% propylene glycol, 5% isopropyl alcohol and 77% water.
  • US 5,602,090 discloses cleaning compositions containing easily oxidisable terpenes such as limonene and hydrogen peroxide.
  • the example formulations contain 0.02% butylated hydroxyanisole as an antioxidant.
  • a peroxide bleach such as hydrogen peroxide
  • various radical scavengers Propyl gallate, butyl-hydroxy anisole and partially hindered substituted hydroxybenzenes have been mentioned.
  • Ascorbic acid and ascorbyl esters have been mentioned as additional components.
  • US 6,110,883 discloses similar compositions having a pH above 8.
  • compositions for treating various skin conditions.
  • the compositions contain an acidic compound like tannic acid, preferably in an amount of at least 1%, a certain amount of hydrogen peroxide and an antimicrobial agent in an amount sufficient to reduce microorganisms on the skin.
  • the compositions may further include antioxidants.
  • EP 447553 disclosed bleaching compositions for cleaning hard surfaces comprising hydrogen peroxide or a precursor thereof, a peracid precursor that produces peracid with the hydrogen peroxide and optionally a surfactant.
  • the peracid precursor is an alkoxylated aliphatic or araliphatic carboxylic acid.
  • the peracid is produced immediately prior to use of the composition by mixing the hydrogen peroxide (or precursor) with the peracid precursor at pH of 5-13. Thus the hydrogen peroxide and the peracid precursor must be stored separately.
  • An antioxidant is optionally added to the peracid precursor to prevent premature oxidation.
  • the present invention provides a process for removing fatty soil from a hard surface, the process comprising the steps, in sequence, of:
  • a second aspect of the present invention provides liquid cleaning composition comprising 0.1-10% by weight of hydrogen peroxide and 0.05-10% by weight of a natural radical scavenging antioxidant comprising a 3,4,5-trihydroxybenzoyl substructure, with the proviso that the composition does not contain bactericides (other than hydrogen peroxide) in an amount suitable to provide an antibacterial action on the skin.
  • a third aspect of the invention provides the use of a natural radical scavenging antioxidant having a 3,4,5-trihydroxybenzoyl substructure and hydrogen peroxide in a liquid cleaning composition for facilitating the removal from a hard surface of fatty soil which has deposited on the surface after the treatment with the liquid cleaning composition.
  • one embodiment of the first aspect of the invention comprises formation of a film comprising the antioxidant in step (a), e.g. by leaving a solution or liquid composition comprising the antioxidant and the hydrogen peroxide to dry on the surface.
  • Step (c) is advantageously effected using a hard surface cleaning composition again comprising the antioxidant and the hydrogen peroxide so that soil is removed and new antioxidant is applied at the same time, thus effectively combining step (c) of the first process according to the first aspect of the invention with step (a) of a subsequent process according to this aspect of the invention.
  • Step (c) is optionally followed by a rinsing step, usually with water.
  • hydrogen peroxide generally assists in soil removal by decomposition of hydrogen peroxide on the hard surface thus generating minuscule oxygen bubbles which help loosening and lifting the soil from the surface.
  • the antioxidant in the liquid composition used in the process is a natural radical scavenging antioxidant comprising a 3,4,5 trihydroxybenzoyl structure.
  • the liquid composition comprises 0.05-10% by weight of said antioxidant, preferably 0.1% - 10% by weight, more preferably at least 0.2%. Amounts of more than 2% or even 1% are generally not required and less than 1% or even at most 0.5 are generally sufficient. Mixtures of antioxidants may be used as well.
  • the composition used in the process also comprises hydrogen peroxide in an amount of 0.1-10%, preferably at least 1%. Higher amounts than 5% are generally not required and may cause damage to sensitive surfaces.
  • the composition used in the process optionally, but preferably contains one or more surfactants as hereinbelow further described. Additionally they may contain other optional ingredients conventionally used in cleaning compositions.
  • the term "soil” encompasses all kinds of staining or soiling of organic or inorganic origin, whether visible or invisible to the naked eye, including soiling of solid debris and/or with bacteria or other pathogens.
  • the invention is particularly effective for easier removal of fatty soil, more specifically aged or baked-on fatty soil.
  • fatty soil as often found e.g. on kitchen surfaces, comprises an oil/fat component in combination with other soil components such as food remains of starchy and/or proteinaceous nature, dust, lime scale deposits, etc.
  • the invention is also effective for removing lime scale, water marks and similar stains.
  • the present invention may also deliver one or more other benefits such as improved tactile properties of the surface (e.g. smoothness) during and/or after cleaning, reduction of rancid smell and less darkening of the soil before cleaning, less surface corrosion and less noise during cleaning.
  • improved tactile properties of the surface e.g. smoothness
  • reduction of rancid smell and less darkening of the soil before cleaning less surface corrosion and less noise during cleaning.
  • Methods, uses and compositions and other products according to the present invention are useful for treating any household hard surfaces in for example kitchens and bathrooms including cooker tops, extractor fans, work surfaces, cooking utensils, crockery, tiles, floors, baths, toilets, wash basins, showers, dishwashers, taps, sinks, and glass and enamel surfaces in general.
  • These surfaces may, for example, consist of paint (e.g. painted or lacquered wood), plastics, glass, ceramic or metal (e.g. stainless steel or chrome).
  • antioxidants fall into two groups, namely primary or chain-breaking antioxidants which react with lipid radicals to form more stable radicals, and secondary (or preventative) antioxidants which reduce the rate of chain initiation by various mechanisms. Further antioxidants may be classified as synthetic or "natural”, i.e. derived from natural products.
  • antioxidants which may be used in methods, uses, articles and compositions according to the present invention.
  • antioxidant in the singular embraces one antioxidant as well as two or more antioxidant materials in combination.
  • Antioxidants for the purpose of this invention are natural antioxidants which contain a 3,4,5-trihydroxybenzoyl substructure or substituted derivatives thereof.
  • gallic acid and its natural derivatives are suitable.
  • Particularly suitable are tannic acid and tannins.
  • Tannic acid and tannins contain a plurality of 3,4,5-trihydroxybenzoyl units whereby the benzoyl group of one unit forms an ester bond with a phenolic oxygen of the next unit.
  • Tannic acid is the most preferred antioxidant for the purposes of this invention. It is sometimes denoted as gallotannic acid or penta- (m-digalloyl)-glucose (C 76 H 52 O 46 ) However, commercially available tannic acid is usually obtained from plant or nut galls, tree barks and other plant parts. The term "tannic acid” as used herein is to be taken to embrace all such materials. As already mentioned, tannin-containing extracts of tea (e.g. as utilised in the compositions of JP-A-07/228,892) are very low in tannic acid content.
  • compositions may be applied to the surface neat or in diluted form.
  • suitable liquid compositions include solutions, dispersions or emulsions of the antioxidant material in a solvent.
  • the solvent is preferably water, or a mixture of organic solvent and water.
  • compositions have a neutral or slightly acidic pH i.e. at most 7, preferably at most 6, especially at most 5.5 or even 4.5 or less. However, it is preferred that the compositions should not be too acidic, in order to avoid damage to acid sensitive surfaces; preferably the pH is at least 1.5 or even 2, more preferably at least 2.5. Most preferably, the pH is in the region from 3 to 4.5.
  • the liquid composition may be in the form of a thin or viscous liquid or gel or in the form of foam, mousse of paste. It is especially preferred if the liquid is viscous or gel-like having a viscosity of at least 100 mPas, preferably at least 150 or even 200 mPas, as measured at a shear rate of 21s -1 (Brookefield viscometer, 20°C), but preferably no more than 5,000 mPas, more preferably at most 2000 mPas. Shear thinning viscous liquids or gels enhance the pleasing sensory effect of the antioxidant during cleaning of a hard surface and are particularly appealing to the consumer and therefore a preferred embodiment of the invention.
  • the viscosity may be brought about by an "internal structuring system" employing one or more surfactants, water, and (usually) electrolyte, to create an ordered or liquid crystalline phase within the composition.
  • an "internal structuring system” employing one or more surfactants, water, and (usually) electrolyte, to create an ordered or liquid crystalline phase within the composition.
  • a thickening polymer may be added, many of which are known in the art, for example polycarboxylate type polymers such as poly(meth)acrylates, polymaleic acids and copolymers of (meth)acrylic acid and/or maleic anhydride with various other vinylic monomers, or polysaccharides such as cellulose derivatives or vegetable or microbial gums e.g. xanthan gum, guar gum and the like.
  • the thickening polymers should be stable in the presence of hydrogen peroxide.
  • Foams and mousses are normally supplied from a dispenser who gassifies or aerates the product dispensed therefrom.
  • Preferred compositions are either low foaming, or if foaming or applied as a foam, the foam easily collapses, thus obviating the need to subsequently rinse or wipe the surface again to remove foam. Thereby the amount of antioxidant remaining on the surface is maximised.
  • a composition according to (or for use in) the invention can comprise detergent surfactants which are generally chosen from anionic, nonionic, amphoteric, zwitterionic or cationic surfactants.
  • the compositions generally comprise at least 0.05%, preferably at least 0.1, 0.2, 0.5 or even 1% by weight, but not more than 45% usually at most 25, 15 or even 10% by weight of total surfactant.
  • the compositions comprise at least an anionic and/or nonionic surfactant, more preferably at least a nonionic surfactant.
  • Suitable synthetic (non-soap) anionic surfactants are water-soluble salts of organic sulphuric acid esters and sulphonic acids that have in the molecular structure an alkyl group containing from 8 to 22 carbon atoms.
  • anionic surfactants water soluble salts of:
  • the preferred water-soluble synthetic anionic surfactants are the alkali metal (such as sodium and potassium) and alkaline earth metal (such as calcium and magnesium) salts of alkylbenzenesulphonates and mixtures with olefinsulphonates and alkyl sulphates, and the fatty acid mono-glyceride sulphates.
  • alkyl-aromatic sulphonates such as alkylbenzenesulphonates containing from 6 to 20 carbon atoms in the alkyl group in a straight or branched chain, particular examples of which are sodium salts of alkylbenzenesulphonates or of alkyl-toluene-, -xylene- or -phenolsulphonates, alkylnaphthalene-sulphonates, ammonium diamylnaphthalenesulphonate, and sodium dinonyl-naphthalene- sulphonate.
  • alkyl-aromatic sulphonates such as alkylbenzenesulphonates containing from 6 to 20 carbon atoms in the alkyl group in a straight or branched chain, particular examples of which are sodium salts of alkylbenzenesulphonates or of alkyl-toluene-, -xylene- or -phenolsulphonates, alkylnaphthalene
  • synthetic anionic surfactant is to be employed the amount present in the compositions of the invention, it will generally be at least 0.2%, preferably at least 0.5%, more preferably at least 1.0%, but not more than 20%, preferably at most 10%, more preferably at most 8%.
  • Suitable nonionic surfactants can be broadly described as compounds produced by the condensation of alkylene oxide groups, which are hydrophilic in nature, with an organic hydrophobic compound which may be aliphatic or alkyl aromatic in nature.
  • the length of the hydrophilic or polyoxyalkylene radical which is attached to any particular hydrophobic group can be readily adjusted to yield a water-soluble compound having the desired balance between hydrophilic and hydrophobic elements. This enables the choice of nonionic surfactants with the right HLB.
  • Particular examples include the condensation product of aliphatic alcohols having from 8 to 22 carbon atoms in either straight or branched chain configuration with ethylene oxide, such as a coconut oil ethylene oxide condensates having from 2 to 15 moles of ethylene oxide per mole of coconut alcohol; condensates of alkylphenols whose alkyl group contains from 6 to 12 carbon atoms with 5 to 25 moles of ethylene oxide per mole of alkylphenol; condensates of the reaction product of ethylenediamine and propylene oxide with ethylene oxide, the condensates containing from 40 to 80% of ethyleneoxy groups by weight and having a molecular weight of from 5,000 to 11,000.
  • alkylglycosides which are condensation products of long chain aliphatic alcohols and saccharides
  • tertiary amine oxides of structure RRRNO where one R is an alkyl group of 8 to 18 carbon atoms and the other Rs are each alkyl or hydroxyalkyl groups of 1 to 3 carbon atoms, for instance dimethyldodecylamine oxide
  • tertiary phosphine oxides of structure RRRPO where one R is an alkyl group of 8 to 18 carbon atoms and the other Rs are each alkyl or hydroxyalkyl groups of 1 to 3 carbon atoms, for instance dimethyl-dodecylphosphine oxide
  • dialkyl sulphoxides of structure RRSO where one R is an alkyl group of from 10 to 18 carbon atoms and the other is methyl or ethyl, for instance methyltetradecyl sulphoxide
  • fatty acid alkylolamides alkylene oxide con
  • the amount of nonionic surfactant to be employed in the cleaning composition of the invention will preferably be at least 0.1%, more preferably at least 0.2%, most preferably at least 0.5 or even 1% by weight.
  • the maximum amount is suitably 15%, preferably 10% and most preferably 7%.
  • compositions may contain amounts of both anionic and nonionic surfactants which are chosen, bearing in mind the level of electrolyte present, so as to provide a structured liquid detergent composition, i.e. one which is 'self-thickened'.
  • a structured liquid detergent composition i.e. one which is 'self-thickened'.
  • the compositions may comprise from 0.1.% to 2% by weight of antioxidant(s), from 1 to 4% by weight of hydrogen peroxide, from 0 to 20%, preferably from 0.2% to 10% by weight of a water-soluble, synthetic anionic sulphate or sulphonate surfactant salt containing an alkyl radical having from 8 to 22 carbon atoms in the molecule, and from 0.2 to 7% by weight of an ethoxylated nonionic surfactant derived from the condensation of an aliphatic alcohol having from 8 to 22 carbon atoms in the molecule with ethylene oxide, such that the condensate has from 2 to 15 moles of ethylene oxide per mole of aliphatic alcohol, the balance being other optional ingredients and water.
  • Suitable amphoteric surfactants that optionally can be employed are derivatives of aliphatic secondary and tertiary amines containing an alkyl group of 8 to 18 carbon atoms and an aliphatic group substituted by an anionic water-solubilising group, for instance sodium 3-dodecylamino-propionate, sodium 3-dodecylaminopropane sulphonate and sodium N-2-hydroxydodecyl-N-methyl taurate.
  • anionic water-solubilising group for instance sodium 3-dodecylamino-propionate, sodium 3-dodecylaminopropane sulphonate and sodium N-2-hydroxydodecyl-N-methyl taurate.
  • Suitable cationic surfactants that optionally can be employed are quaternary ammonium salts having one or two aliphatic groups of from 8 to 18 carbon atoms and two or three small aliphatic (e.g. methyl) groups, for instance cetyltrimethyl ammonium bromide.
  • Suitable zwitterionic surfactants that optionally can be employed are derivatives of aliphatic quaternary ammonium, sulphonium and phosphonium compounds having an aliphatic group of from 8 to 18 carbon atoms and an aliphatic group substituted by an anionic water-solubilising group, for instance 3-(N,N-dimethyl-N-hexadecylammonium) propane-1-sulphonate betaine, 3-(dodecyl methyl sulphonium) propane-1-sulphonate betaine and 3-(cetylmethyl phosphonium) ethane sulphonate betaine.
  • anionic water-solubilising group for instance 3-(N,N-dimethyl-N-hexadecylammonium) propane-1-sulphonate betaine, 3-(dodecyl methyl sulphonium) propane-1-sulphonate betaine and 3-(cetylmethyl phosphonium) ethane sul
  • surfactants are compounds commonly used as surface-active agents given in the well-known textbooks "Surface Active Agents” Vol.1, by Schwartz & Perry, Interscience 1949, Vol.2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents” published by Manufacturing Confectioners Company or in "Tenside-Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981.
  • compositions according to the invention can contain other ingredients which aid in their cleaning performance.
  • the composition can contain detergent builders such as nitrilotriacetates, polycarboxylates, citrates, dicarboxylic acids, water-soluble phosphates (especially ortho-, pyro- or poly-phosphates or mixtures thereof), zeolites and mixtures thereof in an amount of up to 25%.
  • the builder preferably will form at least 0.1% of the composition.
  • Metal ion sequestrants such as ethylenediaminetetraacetates, polyphosphonates (DEQUEST [TM] -range) and the (ortho, pyro, poly) phosphoric acids/phosphates (hereinafter collectively referred to as "phosphate"), and a wide variety of poly-functional organic acids (particularly citric acid) and salts, can also optionally be employed provided they are compatible with the antioxidant.
  • phosphate ethylenediaminetetraacetates, polyphosphonates (DEQUEST [TM] -range) and the (ortho, pyro, poly) phosphoric acids/phosphates (hereinafter collectively referred to as "phosphate"), and a wide variety of poly-functional organic acids (particularly citric acid) and salts, can also optionally be employed provided they are compatible with the antioxidant.
  • Such sequestrants are particularly useful when combined with antioxidants which may form coloured complexes with metals, such as is the case for tannic acid, tannins and gall
  • a further optional ingredient for compositions according to the invention is a suds regulating material, which can be employed in compositions which have a tendency to produce excessive suds in use.
  • soap is salts of fatty acids and include alkali metal soaps such as the sodium, potassium and ammonium salts of fatty acids containing from about 8 to about 24 carbon atoms, and preferably from about 10 to about 20 carbon atoms. Particularly useful are the sodium and potassium and mono-, di- and triethanolamine salts of the mixtures of fatty acids derived from coconut oil and ground nut oil. When employed, the amount of soap can form at least 0.005%, preferably at least 0.1% by weight of the composition. Fatty acid soaps such as Prifac 7901 [TM] have been found to be suitable for this purpose.
  • alkali metal soaps such as the sodium, potassium and ammonium salts of fatty acids containing from about 8 to about 24 carbon atoms, and preferably from about 10 to about 20 carbon atoms. Particularly useful are the sodium and potassium and mono-, di- and triethanolamine salts of the mixtures of fatty acids derived from coconut oil and ground nut oil.
  • the amount of soap can form at least 0.00
  • a further example of a suds regulating material is a silicone oil. Where a hydrocarbon co-solvent is present at a sufficiently high level this may itself provide some or all of the desired antifoaming activity.
  • compositions according to the invention can also contain, in addition to the ingredients already mentioned, various other optional ingredients such as colorants, whiteners, optical brighteners, soil suspending agents, detersive enzymes, gelcontrol agents, freeze-thaw stabilisers, preservatives (for example 1,2-benzisothiazolin-3-one), and hydrotropes.
  • various other optional ingredients such as colorants, whiteners, optical brighteners, soil suspending agents, detersive enzymes, gelcontrol agents, freeze-thaw stabilisers, preservatives (for example 1,2-benzisothiazolin-3-one), and hydrotropes.
  • compositions according to the invention do not contain bactericides (other than hydrogen peroxide) in amounts suitable to provide an antibacterial action on the skin. Generally, bactericides, if present, are only used in amounts necessary to prevent microbial spoilage of the composition.
  • compositions according to the invention and their use for cleaning hard surfaces depend on the presence of hydrogen peroxide, they do not contain alkoxylated aliphatic or araliphatic carboxylic acids as precursors for the corresponding peracids.
  • Liquid compositions may be stored and dispensed by any suitable means, such as by spray applicators. Pump dispensers (whether spray or non-spray pumps) and pouring applicators (bottles etc) are also possible.
  • the compositions may also applied to the surface with a wipe impregnated with the liquid composition.
  • Biodac L6S50 nonionic
  • LAS anionic
  • Tannic acid 0.50% Hydrogen peroxide 3.0%
  • Phosphoric acid 0.42%
  • Sodium hydroxide 0.046%
  • Urea 1,0% Perfume 0.35%
  • Dequest 2046 0.10%
  • Coconut fatty acid (Prifac 7907TM) 0.30% Water to 100%
  • a stainless steel substrate was used for cleaning tests. This was brushed stainless steel size 380mm by 300mm (grade 304 sheet BS 1449 Pt2 1983, supplied by Merseyside Metal Services Ltd). This size tile accommodates two areas for cleaning, one on the left and one on the right of the tile. Each area for cleaning is 215mm by 150mm.
  • a cardboard mount revealing the two areas of the tile to be pre-treated was placed onto the stainless steel tile.
  • approximately half of a 1.0ml pipetted aliquot of an example composition was applied in a line across the top 150mm section of the pre-treatment area.
  • the remaining portion of the 1.0ml example composition was similarly applied to the lower 150mm section of the area.
  • the cardboard mount was carefully removed from the steel tile in readiness to wipe the applied prototype over the entire pre-treatment area.
  • a dampened hand-wrung J-clothTM demineralised water
  • the prototype was spread using four linear wipes over the designated area, two downward and two upward wipes, and in each case 4 replicates for cleaning were prepared.
  • the tiles were allowed to dry for 2 hours before spraying with dehydrated castor oil soil.
  • the spraying of the castor oil soil was carried out in a fume cupboard under standard conditions to ensure good reproducibility between different experiments.
  • the soil was dehydrated castor oil with 0.2% fat red 7B dye. This was stored in the refrigerator when not in use. It was equilibrated to ambient temperature before spraying.
  • the fume cupboard walls/floor and the lab-jack were covered with paper towel.
  • a lab-jack was used to elevate the tile to a practical height for spraying.
  • the lab-jack height was 200mm and was positioned centrally at the back of the fume cupboard.
  • a line 40mm from the back wall of the fume cupboard was marked on to the top of the lab-jack, this was used as the positioning line for each steel tile before spraying. From the 40mm line on the lab-jack, a line 270mm, in parallel, was marked on the base of the fume cupboard floor. This was where the Perspex spray guide was aligned when spraying.
  • a commercially available gravity fill spray gun was used to spray the oily soil onto the steel tile.
  • the rear dial on the gravity fill gun was rotated 360° anti-clockwise from the closed position and the side dial was rotated 270° anti-clockwise, again from the closed position.
  • the gravity fill spray gun was attached to a floor standing air compressor unit and a pressure of 25p.s.i. was used for spraying this soil on to the steel tiles.
  • a clamp stand was positioned in the fume cupboard to hold the spray gun when not in use.
  • the dehydrated castor oil soil was poured into the open bowl of the spray gun.
  • the cardboard spray mount was clipped to a stainless steel tile and this was centrally placed, in landscape position, on the lab-jack along the 40mm line from the rear of the fume cupboard.
  • the cardboard spray mount was a rectangular piece of card, the same size as a stainless steel tile, with two cut-out areas sized 215mm by 150mm, one window area on the left side and the other to the right, with a card separator border between the two windows.
  • the Perspex spray guide was positioned in front of the first window of the tile to be sprayed directly on the 270mm line. This area of the tile was sprayed for a total of 35 seconds starting from the top, following the line of the spray guide.
  • the time taken to spray from top to bottom was approximately 9 seconds, therefore the track of the spray guide is traced 4 times, for each 215mm by 150mm area being sprayed.
  • the adjacent area was sprayed in exactly the same way, after re-aligning the Perspex spray guide in front of the second area.
  • the entire tile had been sprayed twice, it was removed from the fume cupboard and the cardboard spray mount carefully removed.
  • the sprayed tiles were stacked directly on to an oven shelf, each stainless steel tile being separated using an aluminium ring spacer placed in each corner. These spacers enabled each tile to be separated by 10mm. When all the tiles were sprayed, they were collectively placed in the oven for ageing.
  • the tiles were aged at a temperature of 85°C for 1.5 hours.
  • the prepared tiles were not cleaned until the next day.
  • the effort used to remove the soil from the test surface using a cellulosic spongecloth was measured on equipment specifically build for the purpose which measures the effort in Ns.
  • the cleaning composition used to remove the soil was the composition of Control 2. Thus, the reduction in cleaning effort can only be attributed to the antioxidant in the pre-treatment composition
  • Example 1 The results for the compositions of Example 1 and the control 1 (corresponding to Example 1 minus the tannic acid) are given in Table I. Results given are geometric means of the 4 replicate experiments. Table I Treatment Average Total Effort (Ns) No treatment (not clean in 2 minutes) 8000 Control 1 4500 Example 1 30

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Biochemistry (AREA)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cosmetics (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)

Claims (16)

  1. Verfahren zur Entfernung von Fettschmutz von einer harten Oberfläche, wobei das Verfahren der Reihe nach die Schritte:
    (a) Behandeln der harten Oberfläche mit einer flüssigen Reinigungszusammensetzung, umfassend 0,1 bis 10 Gew.-% Wasserstoffperoxid und 0,05 bis 10 Gew.-% eines natürlichen Radikalfänger-Antioxidationsmittels, umfassend eine 3,4,5-Trihydroxy-benzoyl-Substruktur;
    (b) Abscheidenlassen des Fettschmutzes; und
    (c) Reinigen der Oberfläche zur Entfernung des Fettschmutzes
    umfaßt.
  2. Verfahren nach Anspruch 1, wobei ebenso in Schritt (c) eine flüssige Reinigungszusammensetzung verwendet wird, umfassend das Radikalfänger-Antioxidationsmittel und Wasserstoffperoxid.
  3. Verfahren nach den Ansprüchen 1 oder 2, wobei das Radikalfänger-Antioxidationsmittel Gallusgerbsäure ist.
  4. Verfahren nach einem der Ansprüche 1 bis 3, wobei die flüssige Reinigungszusammensetzung einen pH von 7 oder darunter aufweist.
  5. Verfahren nach einem der Ansprüche 1 bis 4, wobei die flüssige Reinigungszusammensetzung 0,1 bis 1 Gew.-% Antioxidationsmittel umfaßt.
  6. Verfahren nach einem der Ansprüche 1 bis 5, wobei die Reinigungszusammensetzung ein oberflächenaktives Mittel umfaßt.
  7. Verfahren nach einem der Ansprüche 1 bis 6, wobei die Oberfläche nach dem Schritt (a) nicht abgespült wird.
  8. Flüssige Reinigungszusammensetzung, umfassend 0,1 bis 10 Gew.-% Wasserstoffperoxid und 0,05 bis 10 Gew.-% eines natürlichen Radikalfänger-Antioxidationsmittels, umfassend eine 3,4,5-Trihydroxybenzoyl-Substruktur, mit der Maßgabe, daß die Zusammensetzung keine Bakterizide (andere als Wasserstoffperoxid) in einer Menge enthält, die geeignet ist, eine antibakterielle Wirkung auf die Häut bereitzustellen.
  9. Flüssige Reinigungszusammensetzung nach Anspruch 8, außerdem umfassend 0,05 bis 45 Gew.-% eines oberflächenaktiven Mittels.
  10. Flüssige Reinigungszusammensetzung nach den Ansprüchen 8 oder 9, wobei die Menge des Antioxidationsmittels 0,1 bis 1,0 Gew.% beträgt.
  11. Flüssige Reinigungszusammensetzung nach einem der Ansprüche 8 bis 10, wobei das Radikalfänger-Antioxidationsmittel Gallusgerbsäure ist.
  12. Flüssige Reinigungszusammensetzung nach einem der Ansprüche 8 bis 11, wobei der pH 7 oder darunter beträgt.
  13. Verwendung eines natürlichen Radikalfänger-Antioxidationsmittels mit einer 3,4,5-Trihydroxybenzoyl-Substruktur und Wasserstoffperoxid in einer flüssigen Reinigungszusammensetzung zur Erleichterung der Entfernung von Fettschmutz, der sich auf der Oberfläche nach der Behandlung mit der flüssigen Reinigungszusammensetzung abgeschieden hat, von einer harten Oberfläche.
  14. Verwendung nach Anspruch 13, wobei in der Reinigungszusammensetzung das Antioxidationsmittel in einer Menge von 0,05 bis 10 Gew.-% und das Wasserstoffperoxid in einer Menge von 0,1 bis 10 Gew.% vorliegt.
  15. Verwendung nach den Ansprüchen 13 oder 14, wobei das Antioxidationsmittel Gallusgerbsäure ist.
  16. Verwendung nach einem der Ansprüche 13 bis 15, wobei die flüssige Reinigungszusammensetzung einen pH von 7 oder darunter aufweist.
EP03742866A 2002-02-28 2003-01-31 Flüssige reinigungsmittel Expired - Lifetime EP1478722B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03742866A EP1478722B1 (de) 2002-02-28 2003-01-31 Flüssige reinigungsmittel

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP02251405 2002-02-28
EP02251405 2002-02-28
EP03742866A EP1478722B1 (de) 2002-02-28 2003-01-31 Flüssige reinigungsmittel
PCT/EP2003/000988 WO2003072689A1 (en) 2002-02-28 2003-01-31 Liquid cleaning compositions

Publications (2)

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EP1478722A1 EP1478722A1 (de) 2004-11-24
EP1478722B1 true EP1478722B1 (de) 2006-05-24

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EP (1) EP1478722B1 (de)
JP (1) JP2005519151A (de)
AR (1) AR038855A1 (de)
AT (1) ATE327310T1 (de)
AU (1) AU2003248334B2 (de)
BR (1) BR0307024A (de)
CA (1) CA2472183A1 (de)
DE (1) DE60305452T2 (de)
ES (1) ES2261952T3 (de)
WO (1) WO2003072689A1 (de)
ZA (1) ZA200405016B (de)

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US8734867B2 (en) 2007-12-28 2014-05-27 Liveleaf, Inc. Antibacterial having an extract of pomegranate combined with hydrogen peroxide
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BR112013022781A2 (pt) * 2011-03-11 2017-07-18 Akzo Nobel Chemicals Int Bv composição de limpeza, artigo, método para a preparação de uma solução estabilizada com um agente tensoativo orgânico e um oxidante e utilização de um componente antioxidante anfifílico para melhorar a estabilidade de um componente tensoativo na presença de um oxidante
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ATE327310T1 (de) 2006-06-15
WO2003072689A1 (en) 2003-09-04
AR038855A1 (es) 2005-01-26
BR0307024A (pt) 2004-11-03
ZA200405016B (en) 2005-06-24
EP1478722A1 (de) 2004-11-24
DE60305452D1 (de) 2006-06-29
AU2003248334A1 (en) 2003-09-09
AU2003248334B2 (en) 2006-06-08
CA2472183A1 (en) 2003-09-04
DE60305452T2 (de) 2006-10-12
ES2261952T3 (es) 2006-11-16

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