CZ166799A3 - Preparations containing aqueous alkaline peroxide bleaching agent - Google Patents

Abstract

A stable liquid aqueous cleaning composition which has a greater pH than 8 and contains a peroxygen bleach, a radical scavenger, chelating reagent and pH buffer.

Description

Technical field

The present invention relates to compositions comprising aqueous alkaline peroxide bleach, in particular stabilized and buffered compositions.

BACKGROUND OF THE INVENTION

Aqueous household detergent compositions have been using bleach for many years to achieve a bleaching and / or disinfecting effect on solid surfaces and / or textiles. Hypochlorite bleaches have been used most frequently for this purpose because they are highly effective and inexpensive. However, they have the drawback that their safety parameters are perceived by the consumer as insufficient.

Aqueous compositions containing peroxide bleach have generally been less widely used in the household utensils market, although they have a high bleaching and / or disinfectant effect and are perceived by the consumer as less aggressive than hypochlorite-based compositions. For example, hydrogen peroxide is generally considered to be environmentally acceptable and its degradation products are oxygen and water. It is believed that the fact that it is used only to a limited extent in the household is partly due to the instability of the compositions containing aqueous peroxide bleach. This instability is particularly noticeable in an alkaline environment where it is essentially due to metal ion contamination occurring in the composition itself and / or in the wash solution resulting from the dissolution of the composition in water.

Further, although these compositions containing aqueous peroxide bleach achieve effective bleaching and / or disinfection, they do not effectively remove greasy stains. Thus, there is still some room for improving the performance of liquid aqueous peroxide bleach-based compositions.

EP-B-208 228 discloses stabilized peroxide compositions having a pH between 1 and 8 and comprising a peroxide component (e.g. hydrogen peroxide), a metal chelating agent (e.g. an aminophosphonate), and a radical scavenger (e.g. di- tert-butylhydroxytoluene).

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SUMMARY OF THE INVENTION

It is an object of the present invention to provide compositions comprising liquid aqueous peroxide bleach, which are effective in removing greasy stains, have greater chemical stability and disinfectant activity.

We have found that these objectives can be achieved by assembling liquid aqueous alkaline compositions having a pH greater than 8 and containing a peroxygen bleach, a radical scavenger, a chelating agent, and a pH buffer.

It has been surprisingly found that by the combined use of a chelating agent (preferably a phosphonate / aminophosphonate chelating agent), a radical scavenger [preferably di-tert-butylhydroxytoluene (BHT) and / or butylhydroxyanisole (BHA)] and a pH buffer (preferably borate pH buffer) ) in a composition comprising an alkaline aqueous peroxygen bleach, both pH and peroxygen bleach stability are achieved with extended shelf life. Furthermore, it has now been found that such a composition comprising an aqueous peroxide bleach, when formulated to contain a chelating agent, a radical scavenger and a pH buffer at a pH above 8, has an enhanced ability to remove greasy stains and effectively disinfect.

The compositions of the present invention are suitable for use on all types of surfaces, both inanimate, such as hard surfaces, fabrics, clothing, carpets and the like, and living, such as human skin, mouth, and the like. of the present invention to be used for cleaning solid surfaces and / or for washing, e.g. as a laundry detergent, laundry additive or even as a prewashing agent. An advantage of the compositions of the present invention is that they are suitable for delicate surfaces. Indeed, when the compositions of the present invention are used for laundering, the fabric and / or its color is damaged - compared to the same compositions, but not containing said chelating agent and / or radical scavenger.

- limited.

The aqueous compositions of the present invention may contain an antimicrobial compound, preferably an antimicrobial extract oil and / or an active ingredient thereof, which also contributes to the disinfectant effect of the compositions. The advantage of such compositions is that their disinfectant action not only affects a wide range of bacterial strains including gram-positive and gram-negative, but also more resistant fungal-like microorganisms, even at a significant degree of dilution, e.g. up to a 1: 100 dilution. ).

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Said aqueous compositions may also contain one or more surfactants and / or one or more solvents which further contribute to the overall stain removal performance of said compositions.

The present invention relates to a stable liquid aqueous cleaning composition having a pH above 8 and comprising a peroxide bleach, a radical scavenger, a chelating agent and a pH buffer.

In a preferred embodiment of the present invention, the composition also comprises an antimicrobial compound, such as an antimicrobial extract oil and / or an active ingredient thereof.

In another preferred embodiment of the present invention, the composition also comprises a solvent and / or a surfactant.

The compositions of the present invention comprise as a first necessary component a peroxygen bleach or a blend of peroxygen bleaches. Preferably, hydrogen peroxide or a water-soluble source thereof or a mixture thereof is used as the peroxygen bleach. Hydrogen peroxide is most preferred in the compositions of the present invention.

It is believed that the presence of a peroxygen bleach, especially hydrogen peroxide, in the compositions of the present invention contributes to the disinfectant and / or bleaching properties of these compositions.

The term "hydrogen peroxide source" as used herein refers to any compound which releases perhydroxyl ions upon contact with water. Water-soluble hydrogen peroxide sources suitable for the described use include percarbonates, per silicates, persulphates (e.g., monopersulphates), perborates, diperoxododecanedicarboxylic acid (DPDA) peroxoacids, magnesium perftalan, dialkyl peroxides, diacyl peroxides, reformed organic percarboxylic acids, peroxide and / or carboxylic acids. or mixtures thereof.

The peroxygen bleaches or mixtures thereof typically comprise 0.91 to 15 wt. % of the compositions described, preferably 0.1 to 10 wt. %, preferably 0.5 to 8 wt. % and most preferably 0.3 to 5 wt. %.

A second essential component of the compositions of the present invention is a chelating agent or a mixture of chelating agents. Suitable chelating agents for the purposes of this invention are selected from the group of phosphonate chelating agents, aminophosphonate chelating agents, substituted heteroaromatic chelating agents, and mixtures thereof.

Phosphonate chelating agents useful herein include etidronic acid (1-hydroxyethylenediphosphonic acid (HEDP)) and / or alkali metal ethane-1-hydroxydiphosphonates.

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Aminophosphonate chelating agents suitable for the purposes of this invention include aminoalkylene poly (alkylene phosphonates), nitrilo / trans (methylene) triphosphonates, ethylenediaminetetramethylene phosphonates and / or diethylenetriaminepentamethylene phosphonates.

These phosphonate / aminophosphonate chelating agents may be present either in their acid form or as salts with different cations present on either some or all of the acid groups. Such phosphonate / aminophosphonate chelating agents are commercially available from Monsanto under the trade name DEQUEST®.

Substituted heteroaromatic chelating agents used in the present invention include hydroxypyridine-A-oxide and derivatives thereof.

Suitable hydroxypyridine-V-oxides and derivatives thereof used in the present invention have the following formula

OH

Y wherein X is nitrogen and Y is one of the following atoms or groups: oxygen, -CHO, -OH, - (CH 2) n COOH, wherein n is an integer from 0 to 20, preferably from 0 to 10, and preferably 0 and preferably Y is oxygen. Accordingly, 2-hydroxypyridine V-oxide is particularly preferred among hydroxypyridine V-oxides and derivatives thereof.

Hydroxypyridine-N-oxides and derivatives thereof are commercially available from Sigma.

Said chelating agents, in particular phosphonate chelating agents of the 1-hydroxyethylenediphosphonic acid type, are particularly advantageous in the compositions of the present invention because they have been found to contribute to the chemical stability of the compositions of the present invention containing peroxide bleach (e.g. hydrogen peroxide) but also disinfectant properties of said compositions.

Typically, the chelating agent or mixture of chelating agents in the compositions of the present invention is present in concentrations of from 0.001 to 10 wt. % of the total composition, preferably from 0.005 to 5 wt. % and preferably from 0.01 to 2 wt. %.

As a third essential component, the compositions of the present invention comprise a radical scavenger or a mixture of radical scavengers. Suitable radical scavengers for this purpose include the well-known substituted mono- and dihydroxybenzenes and their derivatives, alkyl and aryl carboxylates and mixtures thereof. Preferred radical scavengers for this purpose are di-tert-butylhydroxytoluene (BHT), p-hydroxytoluene, hydroquinone (HQ), di-tert-butylhydroquinone (DTBHQ), mono-tert-butylhydroquinone (MTBHQ). , t-butylhydroxyanisole (BHA), p-hydroxyanisole, benzoic acid, 2,5-dihydroxybenzoic acid, 2,5-dihydroxyterephthalic acid, toluylic acid, catechol, z-butylcatechol, 4-allylcatechol, 4-acetylcatechol, 2-methoxyphenol, 2-ethoxyphenol, 2-methoxy-4- (2-propenyl) phenol, 3,4-dihydroxybenzaldehyde,

2,3-dihydroxybenzaldehyde, benzylamine, 1,1,3-Zr (2-methyl-4-hydroxy-5-Z-butylphenyl) butane, tert-butylhydroxyaniline, γ-hydroxyaniline and n-propyl gallan. Most preferred for use in the present invention are di-Z-t-butylhydroxytoluene, which is commercially available e.g. from Shell under the tradename IONOLCP®, and / or Zerc. butylhydroxyanisol. These radical scavengers further contribute to the stability of the peroxygen bleach-containing compositions herein.

Typically, said radical scavengers or mixtures thereof comprise 0.0005 to 5 wt. % of the total composition of the present invention, preferably 0.005 to 1.5 wt. % and preferably 0.01 to 1 wt. %.

As a fourth necessary component, the compositions of the present invention comprise a pH buffer or a mixture of pH buffers.

By "pH buffer" is meant a system composed of a compound or a mixture of compounds whose pH is only slightly altered by the addition of a strong acid or base. Thus, the presence of a pH buffer in the compositions of the present invention allows the pH of these compositions to be maintained above 8 for a longer period of time during storage compared to the same compositions without said pH buffer.

PH buffers suitable for this purpose include borate pH buffer, phosphonate, silicate, and mixtures thereof.

Borate pH buffers suitable for this purpose include alkali metal borates and alkyl borates and mixtures thereof. Borate pH buffers suitable for this purpose are alkali metal salts of boric, metaboric, tetraboric, octoboric, pentaboric, dodecabor, boron trifluoride and / or alkylborates containing 1 to 12 carbon atoms, preferably 1 to 4. Suitable alkylborates are methylborate, ethylborate and propylborate. Particularly suitable herein are alkali metal metaborates (e.g. sodium metaborate), tetraborates (e.g. sodium tetraborate decahydrate) or mixtures thereof.

Boron salts such as sodium metaborate and sodium tetraborate are commercially available from Borax and Societa Chimica Larderello under the trade names sodium metaborate® and Borax®.

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In the compositions of the present invention, the pH buffers or mixtures thereof typically comprise 0.001 to 15 wt. % of the total composition, preferably 0.01 to 10 wt. %, preferably 0.01 to 5 wt. % and most preferably 0.1 to 3 wt. %.

The compositions of the present invention are aqueous. The water preferably comprises 55 to 99 wt. % of the total composition, preferably 80 to 99 wt. %; most preferably 85 to 98 wt. %.

The aqueous compositions of the present invention have a pH greater than 8, preferably 8.1 to 10, preferably 8.2 to 9.5, and most preferably 8.2 to 8.8. The pH of the compositions can be adjusted with alkalizing agents. Examples of alkalizing agents are alkali metal hydroxides such as potassium and / or sodium hydroxide, or alkali metal oxides such as sodium or potassium oxide.

The term "effective disinfectant" herein means that the aqueous alkaline compositions of the present invention comprising said peroxide bleach, said radical scavenger, said chelating agent, and a pH buffer make it possible to significantly reduce the amount of bacteria on the infected surface. Indeed, the disinfectant action affects various microorganisms, including Gram positive bacteria such as Staphylococcus aureus, Gram negative bacteria such as Pseudomonas aeruginosa, as well as Candida albicans fungi present on infected surfaces.

The disinfectant action of a composition can be measured by the bactericidal activity of said composition. A test method suitable for evaluating the bactericidal activity of a composition on clean surfaces is described in European Standard prEN 1040, CEN / TC 216 N 78, dated November 1995 and issued by the European Standardization Commission in Brussels. The European Standard prEN 1040, CEN / TC 216 N 78 specifies the test method and requirements for the minimum bactericidal activity of a disinfectant. The test requirements are met if the number of bacterial colonies forming units (cfu) decreases from 10 cfu (initial value) to 10 ² cfu (final value after contact with the disinfectant product) - a 100-fold reduction in viability is therefore necessary. The compositions of the present invention meet this test, even under high dilution conditions.

As used herein, the term "effective chemical stability" means that the aqueous alkaline compositions of the present invention comprising said peroxygen bleach, said radical scavenger, said chelating agent, and pH buffer have improved chemical stability compared to eg the same compositions without said radical scavenger. .

The chemical stability of the compositions herein can be evaluated by measuring the usable oxygen concentration (often abbreviated AvO ₂ ) at a given storage time elapsed since manufacture of the compositions. The usable oxygen concentration can be determined by chemical titration methods known in the art, such as the iodometric method, the thiosulfatometric method, the 4 permanganometric method and the cerimetric method. The methods and criteria for selecting a suitable method are described, for example, in the book "Hydrogen Peroxide" by WC Schumba, CN Satterfeld and RL Wentworth, published by Reinhold Publishing Corporation in New York in 1955, and in the book "Organic Peroxides" edited by Daniel Swem. and published in Wiley Interscience 1970.

As used herein, the term " increased greasy stain removal ability " means that the aqueous alkaline compositions of the present invention comprising said peroxygen bleach, said radical scavenger, said chelating agent, and pH buffer have enhanced grease stain removal properties compared to e.g. having the same pH but without pH buffer.

The ability of a given composition to remove greasy stains on a soiled surface can be evaluated by the following test method. For example, typical contaminated tiles used for the stain removal test may be white porcelain tiles contaminated with a thin layer of oil, such as worn engine oil or household oils (olive or rapeseed), and then heated in an oven for 1-2 hours to improve oil adhesion to obkladačkám. The composition of the present invention and the comparative composition, e.g. the same composition without said pH buffer, are separately applied to two identical portions of the soiled tile, allowed to act for 1 minute, then removed with running water and finally dried with cotton wool.

The ability to remove stains can be evaluated by comparing the two side-by-side tiles treated in this way. A visual scale expressed in panel score units (psu) may be used to quantify the differences, eg in the range of 0 to 4.

As an optional component, the compositions of the present invention may comprise an antimicrobial compound or a mixture of antimicrobial compounds.

Antimicrobial compounds suitable for this purpose include antimicrobial extract oils or their active ingredients, paraben, glutaraldehyde or mixtures thereof.

Preferably, antimicrobial extract oils or their active ingredients are used for this purpose. Antimicrobial extract oils suitable for such compositions are those that have antimicrobial activity. As used herein, the term " active oil components " means any oil component having antimicrobial activity. It is believed that said antimicrobial extract oils and their active ingredients act as protein denaturants. In addition, said antimicrobial oils and their active ingredients contain:

44 • 4 · · 4 · ·

4 44 4 * 44

O 44 44444 4944444 ° 444 * 4 4 · »

These compounds contribute to the safety profile of the compositions of the present invention when used to disinfect any surface. A further advantage of said antimicrobial oils and their active ingredients is that they give the aqueous alkaline compositions of the present invention a pleasant odor without the need to add perfume. Thus, the advantage of the aqueous alkaline compositions of the present invention is that they have not only an excellent ability to remove greasy stains and effectively disinfect, but also a pleasant odor.

Such oils include, but are not limited to, those obtained from thyme or thyme, lemongrass (Cymbopogon. Citratus), citrus, lemons, oranges, anise plants, cloves, anise spices, cinnamon, geranium, roses, mint, lavender, lemon essential oils. , eucalyptus, peppermint, camphor, sandalwood, cedar, and mixtures thereof. Active ingredients of extract oils include, but are not limited to, thymol (present in, for example, thyme or thyme), eugenol (present in, for example, cinnamon and cloves), menthol (present in, for example, mint), geraniol (present in, for example, geranium and rose). verbenone (present eg in verbena), eucalyptol and pinocarvone (present eg in eucalyptus), cedrol (present eg in cedar), anethole (present eg in anise), carvacrol, hinokitiol, berberine and mixtures thereof. The active ingredients, extract oils, preferred for this purpose are thymol, eugenol, verbenone, eucalyptol and / or geraniol.

Thymol is commercially available eg from Aldrich, eugenol eg from Sigma, Systems-Bioindustries (SBI) - Manheimer etc.

Paraben suitable for use in said compositions includes ethylparaben, methylparaben, propylparaben, and mixtures thereof.

Glutaraldehyde is commercially available from Union Carbide or BASF.

Said antimicrobial compounds or mixtures thereof typically comprise up to 5 wt. % of the total composition, preferably from 0.006 to 4 wt. %, preferably from 0.05 to 2 wt. %.

The compositions of the present invention may further comprise any surfactant known to those skilled in the art, including nonionic, anionic, cationic, amphoteric and / or zwitterionic surfactants. Said surfactants are desirable here as they further contribute to the cleaning performance of the present compositions. The surfactant or surfactant mixtures typically comprise up to 50 wt. % of the total composition, preferably from 0.1 to 30 wt. % and preferably from 0.2 to 25 wt. %.

Anionic surfactants particularly suitable for use herein include the water-soluble salts of acids of the formula ROSO ₃ M, wherein R is preferably a C ₆ -C ₂₄ hydrocarbon radical, preferably an alkyl or a 4-C-C ₄ -C 4 hydrocarbon radical. 4 4 4 4 4 4 4444 44444444 4 444

444 444 44

444444 44 4 44 44 hydroxyalkyl having a C 8 -C 20 alkyl component, preferably a C 5 -C 18 alkyl or hydroxyalkyl, and M is hydrogen or a cation, e.g. an alkali metal (e.g. sodium, potassium, lithium), or ammonium or substituted ammonium (e.g. methyl, dimethyl and trimethylammonium cations and quaternary ammonium cations such as tetramethylammonium and dimethylpiperidinium cations and quaternary ammonium cations derived from alkylamines (such as ethylamine, diethylamine, triethylamine and mixtures thereof, etc.).

Other anionic surfactants suitable for use herein are alkyl diphenyl ether sulfonates and alkyl carboxylates. Other anionic surfactants may include salts (including, for example, sodium, potassium, ammonium, and substituted ammonium salts such as mono-, di-, and triethanolamine salts) of soaps, C9-C20 linear alkylbenzene sulfonates, C8-C24 olefin sulfonates, sulfonated polycarboxylic acids prepared by sulfonating the pyrolytic product. alkaline earth metal citrates as described, for example, in British Patent No. 1,082,179, C8-C24 alkyl polyglycol ether sulfates (containing up to 10 moles of ethylene glycol), alkyl ester sulfonates (such as C14-C16 methyl ester sulfonates), acylglycerol sulfonates, fatty oleyl glyphenol sulfate sulfates, alkyl oleyl glyphenol sulfates sulfates alkylphosphates, isethionates (such as acylisethionates), N-acyltaurates, alkyl-succinamides and sulfosuccinates, sulfosuccinic acid monoesters (especially saturated and unsaturated C12-C18 monoesters), sulfosuccinic acid diesters (especially saturated and unsaturated C6- C14 diesters), acyl sarcosinates, alkylpolysaccharide sulphates (such as alkylpolyglucoside sulphates - nonionic unsulphated compounds described below), branched primary alkyl sulphates, alkylpolyethoxycarboxylates [such as those having the formula RO (CH ₂ CH ₂ O) ⁺ CH ₂ COO'M ⁺ R is C 8 -C 22 alkyl, k is an integer from 0 to -10 and M is a soluble salt-forming cation]. Resin acids and hydrogenated resin acids are also suitable, for example rosin, hydrogenated rosin and hydrogenated resin acids present in or derived from tall oil. Further examples are given in the book "Surface Active Agents and Detergents" (Vol. I and II by Schwartz, Perry and Berch). A number of such surfactants are also generally disclosed in U.S. Patent No. 3,929,678, issued December 30, 1975 to Laughlin et al., From column 23, line 58 to column 29, line 23 (herein incorporated by reference).

Anionic surfactants preferably used for the compositions of the present invention are alkylbenzene sulfonates, alkyl sulfates, alkoxylated alkyl sulfates, paraffin sulfonates, and mixtures thereof.

Amphoteric surfactants suitable for use herein include amine oxides having the general formula R 1 R 2 R 3 NO, wherein each of R 1, R 2, and R 3 is independently saturated substituted "ft ftft" ftftft ftft · ftftft ftft ftftft · ftft ftft · ftftftft Ftft ftft ftft ftft ftft ftft ftft ftftft ftft ftft ftft or unsubstituted, linear or branched hydrocarbon chain of one to three carbon atoms. Preferably, according to the present invention, those amine oxides having the general formula R 1 R 2 R 3 NO, in which R 1 is a hydrocarbon chain containing 1 to 30 carbon atoms, preferably 6 to 20, preferably 8 to 16, most preferably 8 to 10, are preferred. and R 3 are independently substituted or unsubstituted, linear or branched hydrocarbon chains of one to four carbon atoms, preferably one to three carbon atoms, and are preferably methyl groups. R 1 can be a saturated substituted or unsubstituted, linear or branched hydrocarbon chain.

Suitable amine oxides for use herein are, for example, natural mixtures of C8 to C10 amine oxides as well as C12 to C10 amine oxides commercially available from Hoechst.

Suitable zwitterionic surfactants for use herein include both cationic and anionic hydrophilic groups on the same molecule over a relatively wide pH range. A typical cationic group is a quaternary ammonium group, although other positively charged groups such as phosphonium, imidazolium sulfonium groups may also be used. Typical anionic hydrophilic groups are carboxyl and sulfone groups, although other groups such as sulfates, phosphonates and others may be used. The general formula for some of the zwitterionic surfactants useful herein is

R, -N ⁺ (R ₂ ) (R 3) (R 4) X 'wherein R 1 is a hydrophobic group, both R 2 and R 3 are C 1 -C 4 alkyl, hydroxyalkyl or other substituted alkyl groups which may also be attached to nitrogen such that forms a cyclic structure, R 4 is an entity that attaches to a cationic nitrogen atom a hydrophilic group, which is typically an alkylene, hydroxyalkylene or polyalkoxy group having 1 to 10 carbon atoms, and X is a hydrophilic group, which is preferably a carboxy or sulfo group. A preferred hydrophobic group R 1 is an alkyl group having 1 to 24 carbon atoms, preferably less than 18, preferably less than 16 carbon atoms. The hydrophobic group may contain unsaturated bonds and / or substituents and / or linking groups such as aryl groups, amide groups, ester groups and the like. In general, simple alkyl groups are preferred for their low cost and stability.

Zwitterionic surfactants which are particularly preferred for this purpose include betaine and sulfobetaine surfactants, derivatives and mixtures thereof. Betaine and sulfobetaine surfactants are preferred herein because they increase the disinfectant effect by increasing the permeability of the cell walls of the bacteria and thereby allowing the active ingredients to enter the cell.

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Moreover, due to their mild action effect, said betaine and sulfobetaine surfactants are particularly suitable for cleaning delicate surfaces, for example, delicate fabrics or surfaces in contact with food and / or infants. Betaine and sulfobetaine surfactants are also extremely gentle on the skin and / or on the treated surfaces.

Betaine and sulfobetaine surfactants suitable for use in the present invention are betaine / sulfobetaine and betaine-like detergents whose molecule contains both a basic and an acid group forming an internal salt, thereby providing both a cationic and anionic group in a wide range pH. Some common examples of such detergents are described in U.S. Patent Nos. 2,082,275, 2,770,279 and 2,255,082, incorporated herein by reference. Betaine and sulfobetaine surfactants preferred for this purpose have the general formula

R ₂

R, -N ⁺ - (CH ₂ ) _n -Y '

AND

I R ₃ in which R is a hydrocarbon chain containing 1 to 24 carbon atoms, preferably 8 to 18, preferably 12 to 14, R ₂ and R ₃ are hydrocarbon chains containing from 1 to 3 carbon atoms, preferably 1 carbon atom, n is an the number from 1 to 10, preferably from 1 to 6, preferably 1, Y is selected from the group consisting of carboxyl and sulfonyl groups, and the hydrocarbon chains R 1, R ₂ and R ₃ have a total of 14 to 24 carbon atoms, or mixtures thereof.

Examples of particularly suitable betaine surfactants include C ₁₂ -C 18 alkyldimethyl betaine such as coconut betaine and C 10 -C 16 alkyldimethyl betaine such as lauryl betaine. Coconut betaine is commercially available from Seppic under the trade name Amonyl 265®. Laurylbetain is commercially available from Albright and Wilson under the trade name Empigen BB / L®.

Other specific zwitterionic surfactants have the general formula

R, -C (O) -N (R ₂ ) - (C (R ₃ ) ₂ ) _n -N (R ₂ ) ₂ ⁽⁺⁾ - (C (R ₃ ) ₂ ) n -SO ₃ ⁽ - ⁾ or

R, -C (O) -N (R ₂ ) - (C (R ₃ ) ₂ ) _n -N (R ₂ ) ₂ ⁽⁺⁾ - (C (R 3) 2) n -COO ⁽ - ⁾ wherein R 1 is in each case a hydrocarbon group, e.g. an alkyl group containing from 8 to 20, preferably up to 18, preferably up to 16 carbon atoms, R2 is in each case either hydrogen (when attached to an amide nitrogen), a short alkyl chain or a substituted alkyl chain of one to four carbon atoms atoms, preferably a substituent selected from the group consisting of methyl, ethyl, propyl, hydroxyethyl or hydroxypropyl and mixtures thereof, preferably methyl, R ₃ is always selected from the group consisting of hydrogen and hydroxy and n is always an integer from 1 to 4 preferably from 2 to 3, preferably 3, and in structure (C (R ₃ ) 2) there is at most one hydroxyl group. The groups R1 may be branched and / or unsaturated. The R ₂ groups can also be linked to form cyclic structures. A surfactant of this type is the C 10 -C 10 fatty acylamidopropylene (hydroxypropylene) sulfobetaine, which is commercially available from Sherex Company under the trade name Varion CAS sulfobetaine®.

In a preferred embodiment of the present invention where the compositions are particularly suitable for disinfecting solid surfaces, the surfactant is typically a surfactant system comprising an amine oxide and a betaine or sulfobetaine surfactant, preferably in a weight ratio of amine oxide to betaine or sulfobetaine of 1: 1 to 100: 1, 6: 1 to 100: 1 and preferably 10: 1 to 50: 1. The use of such a surfactant system for solid surface cleaning compositions described herein provides effective cleaning ability to said compositions, but additionally provides clarity to the cleaned surfaces by minimizing the amount of coatings / smudges adhered to the surface to be cleaned.

Nonionic surfactants suitable for use herein are fatty alcohol ethoxylates and / or propoxylates which are commercially available over a wide range of fatty alcohol chain lengths and degrees of ethoxylation. Indeed, the HLB (hydrophilic-lipophilic balance) values of such alkoxylated nonionic surfactants essentially depend on the chain length of the fatty alcohol, the nature of the alkoxylation, and the degree of alkoxylation. Catalogs are available listing a number of surfactants, including nonionic ones, together with their respective HLB values.

Particularly suitable as nonionic surfactants for the described use are hydrophobic nonionic surfactants having an HLB value of less than 16, preferably less than 15, preferably less than 12 and most preferably less than 10. These hydrophobic nonionic surfactants have been found to have good degreasing properties.

Preferred hydrophobic nonionic surfactants for use in the compositions of the present invention are surfactants having HLB values below 16 and the general formula RO- (C ₂ H ₄ O) ₁₁ (C ₃ H ₆ O) m H, wherein R is a C ₆ to C ₂₂ alkyl chain or C ₆ to C C ₂ g_alkylbenzenový chain, n + m is from 0 to 20, n from 0 to 15 am from 0 to 20, preferably n + m is 1 to 15, us of from 0.5 to 15, preferably n + m is from Preferred R substituents for this use are C ₅ -C ₂₂ alkyl chains. Accordingly, suitable hydrophobic nonionic surfactants for this use are Dobanol ^R 91-2.5 (HLB = 8.1, R is a mixture of C8 and Cu alkyl chains, n is 2.5 and m is 0) or Lutensol ^R TO3 (HLB) = 8, R is a C 1-3 alkyl chain, n is 3 and m is 0) or Lutensol ^R AO 3 (HLB = 8, R is a mixture of C 13 and C 15 alkyl chains, n is 3 and m is 0) or

Tergitol ^R 25L3 (HLB = 7,7, R is within the chain length of C12 to C15, n is 3 am is 0) or Dobanol ^R 23-3 (HLB = 8,1, R is a mixture of C12 and C13 alkyl chains , n is 3 and m is 0) or Dobanol ^R 23-2 (HBL = 6.2, R is a mixture of C12 and C13 alkyl chains, n is 2 and m is 0) or Dobanol ^R 45-7 (HBL = 11.6, R is a mixture of C14 and C15 alkyl chains, n is 7 and m is 0) or Dobanol ^R 23-6.5 (HLB = 11.9, R is a mixture of C12 and C13 alkyl chains, n is 6.5 and m is 0) or Dobanol ^R 25-7 (HLB = 12, R is a mixture of C12 and C15 alkyl chains, n is 7 and m is 0) or

Dobanol ^R 91-5 (HLB = 11,6, R is a mixture of C9 and Cn alkyl chains, n is 5 and m is 0) or

Dobanol ^R 91-6 (HLB = 12.5, R is a mixture of C 9 and C 11 alkyl chains, n is 6 and m is 0) or

Dobanol ^R 91-8 (HLB = 13,7, R is a mixture of C9 and Cn alkyl chains, n is 8 and m is 0),

Dobanol ^R is a mixture of C 9 to C 11 alkyl chains, n is 10 and m is 0) or mixtures thereof. Preferred herein are Dobanol ^R 91-2.5 or Lutensol ^R TO3 or Lutensol ^R AO3 or Tergitol ^R 25L3 or Dobanol ^R 23-3 or Dobanol ^R 23-2 or Dobanol ^R 23-10 or mixtures thereof. Dobanol ^R surfactants are commercially available from Shell. Lutensol ^R surfactants are commercially available from BASF and Tergitol ^R surfactants are commercially available from UNION CARBIDE.

The aqueous composition of the present invention may contain, as an optional additive, a solvent or solvent mixture. When used, the solvents preferably increase the cleaning performance of the compositions of the present invention. Solvents suitable for addition to the compositions of the present invention include propylene glycol derivatives such as n-butoxypropanol or n-butoxypropoxypropanol, water-soluble solvents CARBITOL® or water-soluble solvents CELLOSOLVE®. Water-soluble solvents CARBITOL® are compounds of the 2- (2-alkoxyethoxy) ethanol class wherein the alkoxy group is derived from ethyl, propyl or butyl. A preferred water-soluble carbitol is 2- (2-butoxyethoxy) ethanol, also known as butyl carbitol. CELLOSOLVE water-soluble solvents are compounds of the 2-alkoxyethoxyethanol class, of which 2-butoxyethoxyethanol is preferred. Other suitable solvents are benzyl alcohol, methanol, ethanol, isopropanol and diols such as 2-ethyl-1,3-hexanediol and 2,2,4-trimethyl-1,3-pentanediol and mixtures thereof. Preferred solvents for use in the present invention are n-butoxypropoxypropanol, butyl carbitol (R) and mixtures thereof. The most preferred solvent for use in the present invention is butyl carbitol®.

In the compositions of the present invention, the solvents may typically be present in a concentration of up to 10% by weight. %, preferably from 0.1 to 8 wt. % and preferably from 0.5 to 6 wt. % of the total composition.

······································································ I · ··· ·· · ·· ··

The compositions of the present invention may contain as an additive a thixotropic polymeric thickener or a mixture of polymeric thickeners.

Such thixotropic polymeric thickeners are useful herein because they have two functions in the compositions of the present invention: they not only prevent or limit inhalation of the peroxide bleach mist that the user is exposed to when spraying the composition of the present invention onto the disinfected surface by reducing the risk of dripping of the composition.

Thixotropic polymeric thickeners suitable for use herein include both synthetic and natural polymers. Thixotropic polymeric thickeners suitable for use herein include polyurethane polymers, polyacrylamide polymers, polycarboxylic polymers such as poly (acrylic acid) and its sodium salt, xanthan gum or its derivatives, alginate or its derivatives, polysaccharide polymers of the type of substituted cellulose materials, such as ethoxylated cellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxypropyldellulose, hydroxyethylcellulose and mixtures thereof.

The thixotropic polymeric thickeners preferred for use in the compositions of the present invention are xanthan gum or derivatives thereof, sold by Kelco Division of Merck under the trade names KELTRON®, KELZAN AR®, KELZAN S®, KELZAN XZ® and the like.

Xanthan gum is an extracellular polysaccharide produced by Xanthomonas campestras. Xanthan gum is produced by fermentation of corn sugar or other corn sweetener by-products. Xanthan contains a poly [beta- (1-> 4) -D-glucopyranosyl] backbone similar to that found in cellulose. Aqueous dispersions of xanthan gum and derivatives thereof have remarkable rheological properties. Xanthan gum has a high pseudoplasticity, i.e. rapid thixotropy, which is generally accepted as being immediately reversible. Preferred xanthan materials include cross-linked xanthan materials. Xanthan polymers can be crosslinked by a variety of known crosslinking covalent bonding agents and reacting with the hydroxyl groups of large polysaccharide molecules. However, they can also be crosslinked by divalent, trivalent or polyvalent metal ions. Such cross-linked xanthan gels are described in U.S. Patent No. 4,782,901, which is incorporated herein by reference. Crosslinkers suitable for xanthan materials include metal cations such as Al ³⁺ , Fe ³⁺ , Sb ³⁺ , Zr ⁴⁺ and other transition metals, and the like. Organic known crosslinkers may also be used. KELZAN AR®, a cross-product of Kelco, a division of Merck, Inc, is preferred for the present invention.

• · · · · · · · ·

Polycarboxylic polymers for use in the present invention preferably have a molar mass of from 500,000 to 4,500,000 g / mol, preferably from 1,000,000 to 4,000,000 g / mol. The most preferred polymers for use in the present invention contain 0.5 to 4 wt. % of a crosslinker, wherein the crosslinker serves to interconnect linear polymer chains to form crosslinked products. Suitable crosslinkers include polyalkenyl polyethers. Polycarboxylic polymers include polyacrylate polymers. In addition to acrylic acid, other monomers can be used to form these polymers, including maleic anhydride monomers, which function as a source of additional carboxyl groups. The molar mass of the carboxyl group-containing monomer, calculated per carboxyl group, typically ranges from 23 to 200 g / mol, preferably from 50 to 150 g / mol, preferably from 75 to 125 g / mol. If desired, other monomers, such as ethylene and propylene, may also be present in the monomer mixture as diluents.

Preferred polycarboxylic polymers for use in the present invention are polyacrylate polymers. Commercially available polyacrylate type polymers include those sold under the trade names Carbopol®, Acrysol® ICS-1, Polygel® and Sokalan®. The most preferred polyacrylate polymers are acrylic acid alkyl (C8-C10) acrylate, commercially available under the trade name Carbopol® 1623, Carbopol® 695 from BF Goodrich, and the acrylic acid / maleic anhydride copolymer commercially available under the trade name Polygel® DB from 3V Chemical Company. Mixtures of any of the polycarboxylic polymers herein may also be used.

In the compositions of the present invention, the thixotropic polymeric thickener or mixture of such thickeners may comprise up to 10% by weight. % of the total composition, preferably 0.02 to 5 wt. %, preferably 0.02 to 2 wt. % and most preferably 0.02 to 1 wt. %.

The aqueous compositions of the present invention may further comprise a variety of other optional ingredients such as cleaning enhancers, stabilizers, bleach activators, clay removers, dye transfer agents, brighteners, dusting agents, enzymes, dispersing agents, dye transfer inhibitors , pigments, perfumes and dyes.

The aqueous compositions of the present invention, assembled in liquid form, can be applied neat or diluted. In this sense, the present invention also encompasses a method of cleaning a surface in which the composition as described above is applied to the surface.

The term "surface" as used herein refers to any surface, including the surface of living objects, such as human skin, mouth, teeth, and inanimate surfaces. Inanimate surfaces include, but are not limited to, hard surfaces that are typical of habitable rooms, such as kitchens or bathrooms, or for ·· ····

Car interiors, such as wall and floor tiles, walls, floors, chrome parts, glass, smooth plastic, any plastic, impregnated wood, table surfaces, sinks, hotplates, dishes, sanitary ware, such as sinks, showers, shower curtains, bathtubs, toilet bowls and the like, as well as fabrics including dresses, curtains, drapes, bed linen, towels and bath towels, tablecloths, sleeping bags, tents, upholstered furniture and the like, and carpets. Inanimate surfaces also include, but are not limited to, household appliances including refrigerators, freezers, washing machines, automatic dryers, ovens, microwave ovens, dishwashers and the like. The compositions of the present invention have been found to be particularly suitable for cleaning and / or disinfecting non-horizontal hard surfaces.

Preferably, the compositions of the present invention are applied to the cleaned surfaces in diluted form.

By "dilute form" is meant herein that the compositions of the present invention having a liquid or solid form can be diluted by a user with a liquid, typically water. The compositions may be diluted by the user typically up to 100 times by weight of water, preferably from 80 to 40 times by weight of water, and preferably from 60 to 30 times by weight of water.

In this sense, the present invention also includes dilute compositions obtainable by diluting the composition of the present invention with water.

These aqueous compositions may be packaged in a variety of suitable detergent containers known to those skilled in the art. These aqueous compositions can be desirably filled into manually operated spray dispenser containers, which are typically made of synthetic organic polymeric plastic materials. In this sense, the present invention also encompasses the aqueous cleaning compositions described above that are filled into spray dispensers, preferably triggered or dispensed with a pump.

For example, said spray dispensers allow the aqueous compositions of the present invention to be uniformly applied to a relatively large area to be cleaned, thereby contributing to the cleaning properties of said compositions. Such spray dispensers are particularly suitable for the treatment of vertical surfaces.

Spray dispensers suitable for use in the present invention include manually operated foam trigger dispensers, sold, for example, by Specialty Packaging Products, Inc, or Continental Sprayers, Inc. Such types of dispensers are disclosed, for example, in U.S. Patent No. 4,701,311 to Dunnining et al., And U.S. Patent Nos. 4,646,973 and 4,538,745;

9 9 • 0 0 0 • 000

0 0 0 awarded in both cases to Focarracci. Particularly suitable for use herein are dispensers of the type T 8500 ® or T 8900 ®, commercially available from Continental Sprayers International, or T 8100 ®, commercially available from Canvon, Northern Ireland. In such a dispenser, the liquid composition is dispersed into fine droplets to form a mist directed towards the surface to be treated. The means stored in the reservoir of said dispenser is indeed driven in such a spray dispenser by the head of the spray dispenser by the energy provided by the user to the pumping mechanism when the user activates said pumping mechanism. More specifically, in said spray dispenser heads, the composition is propelled to a certain obstacle, such as a grid or cone, and the like, causing an impact which helps atomize the liquid composition and thus aids in droplet formation.

The compositions of the present invention may also be in the form of wipes. As used herein, the term "wipe" refers to a disposable material impregnated with the liquid composition of the present invention. Preferably, said wipes are packaged in a plastic box. Accordingly, the present invention also encompasses wipes, eg, disposable paper towels, impregnated / moistened with the liquid composition described above. The advantage of this embodiment is the faster use of the cleaning agent by the user, here even outside the home, since there is no need to apply the liquid compositions of the present invention to the surfaces to be cleaned and dry them with a cloth. In other words, wipes make it possible to clean surfaces in one step.

DETAILED DESCRIPTION OF THE INVENTION

The present invention will be further illustrated by the following examples. The following compositions were prepared by mixing said components in the indicated proportions (wt% unless otherwise indicated).

• 9,999

9

9 9 9 9 9

9

9 9 9 9 9

9

9999 98 9

9

9

9 9 9

9

Folders (wt%) Resources AND II III IV in VI Hydrogen peroxide 2,0 1.0 1.0 1.0 2.5 3.0 Betaine * 2,0 1.0 0.5 0.5 0.3 3.0 Laurylamine oxide 1.5 1.5 2,0 2,0 1.0 1.0 Thymol 0.05 0.1 - - - - Geraniol - - 0.05 0.1 - - Eucalyptol 0.1 - 0.05 - - - Ethylparaben - - - - 0.4 0.4 Eugenol - - - - - 0.2 HEDP 0.1 - 0.1 0.05 0.2 0.3 ATMP - 0.1 - - - - BHT 0.05 0.05 0.1 0.1 0.1 0.15 Tetraborate 0.5 0.5 0.5 1.0 1.0 1.5 Water and Mino- anal components, up to 100% NaOH to pH 8.5

Betaine * is either coconut betaine, commercially available from Seppic under the trade name Amonyl 265®, or laurylbetain, commercially available from Albright & Wilson under the trade name Empigen BB / L®, or mixtures thereof.

HEDP is etidronic acid.

ATMP is nitrile / methylene phosphonic acid.

BHT is tert-butylhydroxytoluene.

Tetraborate is sodium tetraborate decahydrate.

«0 • 0 000 ·

19 Dec 0 0 0 0 0 0 0 0 0 0 · 0 0 0 00 0000 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 • 0 0 0 0 0 0 0 000 000 0 0 0 0 0 0 Folders Resources (wt%) VII VIII IX X XI XII Hydrogen peroxide 2,0 2,0 3.0 1.0 1.0 1.0 Betaine * 1.5 1.0 1.0 1.0 0.1 0.1 Laurylamine oxide 1.0 1.0 3.0 3.0 3.0 2,0 Thymol - 0.1 - - - - Geraniol - - 0.05 0.1 - - Eucalyptol - - 0.05 - - - Ethylparaben - - - - 0.4 0.4 Eugenol - - - - - 0.2 Dobanol 91-10® 0.5 0.5 0.3 0.3 0.1 0.1 HEDP 0.1 - 0.1 0.05 0.2 0.3 ATMP - 0.1 - - - - BHT - - - - - 0.08 BHA 0.1 0.1 0.05 0.05 0.08 - Boritan - - 0.7 0.7 1.0 1.0 Tetraborate Water and Mino- anal components, up to 100% NaOH to pH 8.5

BHA is butylhydroxyanisole.

These aqueous compositions complied with the European Commission standardization prEN 1040 test. These compositions have an excellent disinfectant effect, whether used clean or diluted, e.g. in dilution ratios of 1: 100, 1; 25 or 1:50, and excellent stain removal performance.

These compositions also have excellent chemical stability under extended storage times and / or unfavorable conditions: after 10 days storage at 50 ° C they do not lose more than 7% of usable oxygen.

Claims (18)

A stable liquid aqueous cleaning composition having a pH of greater than 8 and comprising a peroxygen bleach, a radical scavenger, a chelating agent, and a pH buffer. A stable liquid aqueous cleaning composition according to claim 1, wherein said peroxygen bleach is hydrogen peroxide and / or a water-soluble source thereof selected from the group consisting of percarbonates, persilicates, persulphates, perborates, peracids, dialkyl peroxides, diacyl peroxides, preformed. percarboxylic acids, organic and inorganic peroxides, organic and inorganic hydroperoxides and mixtures thereof, and is preferably hydrogen peroxide. A stable liquid aqueous cleaning composition according to any one of the preceding claims 1 and 2, wherein said peroxygen bleach or bleach blend is from 0.01 to 15 wt%. % of the total composition, preferably 0.1 to 10 wt. % and preferably 0.5 to 8 wt. %. A stable liquid aqueous cleaning composition according to any one of claims 1 to 3, wherein said radical scavenger is a substituted mono or dihydroxybenzene or a derivative thereof, an alkyl carboxylate, an aryl carboxylate, or mixtures thereof, preferably a di-tert-butyl ester. butylhydroxytoluene, p-hydroxytoluene, hydroquinone, di-tert-butyl hydroquinone, mono-tert-butyl hydroquinone, tert. butylhydroxyanisole, β-hydroxyanisole, benzoic acid, 2,5-dihydroxybenzoic acid, 2,5-dihydroxyterephthalic acid, toluylic acid, catechol, n-butylcatechol, 4-allylcatechol, 4-acetylcatechol, 2-methoxyphenol, 2-ethoxyphenol, 2- methoxy-4- (2-propenyl) phenol, 3,4-dihydroxybenzaldehyde, 2,3-dihydroxybenzaldehyde, benzylamine, 1,1,3- trans - (2-methyl-4-hydroxy-5- t -butylphenyl) butane, tert-butylhydroxyaniline, p-hydroxyaniline, n -propylgallan or mixtures thereof, and is preferably di-tert-butylhydroxytoluene and / or a tert-butylhydroxyaniline. butylhydroxyanisol. A stable liquid aqueous cleaning composition according to any one of the preceding claims, wherein the radical scavenger or mixtures thereof comprises 0.0005 to 5 wt. % of the total composition, preferably 0.005 to 1.5 wt. % and preferably 0.01 to 1 wt. %. A stable liquid aqueous cleaning composition according to any one of claims 1 to 5, wherein said chelating agent is selected from the group consisting of phosphonate chelating agents, aminophosphonate chelating agents, substituted heteroaromatic chelating agents, and mixtures thereof, and is preferably to alkali metal 1-hydroxyethylenediphosphonic acid, alkali metal ethane-1-hydroxydiphosphonate, alkali metal nitrilo-trimethylene phosphonate, alkali ethylenediaminetetramethylene phosphonate ·· ···· · · φπ 7995 ~ 70,6,7} 99 ♦ · 0 · 0 0 0 · · 0 0 · 0 * * * * * 21 ··· · · · ♦? 99 44 alkali metal, diethylenetriaminepentamethylene phosphonate, 2-hydroxypyridine-N-oxide or mixtures thereof. A stable liquid aqueous cleaning composition according to any preceding claim 1 to 6, characterized in that the chelating agent or mixtures thereof comprise from 0.001 to 10 wt. % of the total composition, preferably 0.005 to 5 wt. %, and preferably from 0.01 to 0.01 2 wt. %. A stable liquid aqueous cleaning composition according to any one of claims 1 to 7, wherein said pH buffer is a borate pH buffer, a phosphonate, a silicate, or mixtures thereof, preferably a borate, a metaborate. , an alkali metal tetraborate, octoborate or pentaborate, dodecabor, boron trifluoride, a C1 -C12 alkylborate or mixtures thereof, and is preferably an alkali metal metaborate or tetraborate or mixtures thereof. A stable liquid aqueous cleaning composition according to any one of claims 1 to 8, wherein the pH buffer or pH buffer mixtures is 0.001 to 15% by weight. % of the total composition, preferably 0.01 to 10 wt. %, preferably 0.01 to 5 wt. % and most preferably 0.1 to 3 wt. %. A stable liquid aqueous cleaning composition according to any one of claims 1 to 9, further comprising an antimicrobial compound, preferably an antimicrobial extract oil, typically obtained from thyme, lemongrass (Cymbopogon citratus), citrus, lemons, oranges. , anise plants, cloves, anise spices, cinnamon, geranium, roses, lavender, citronella essential oil, eucalyptus, peppermint, camphor, sandalwood, cedar, and mixtures thereof, and / or the antimicrobial active ingredient of the extract oil, typically selected from a group consisting of thymol, eugenol, menthol, carvacrol, verbenone, eucalyptol, cedrol, anethole, pinocarvone, geraniol, hinokithiol, berberine and mixtures thereof. A stable liquid aqueous cleaning composition according to claim 10, wherein said antimicrobial compound comprises up to 5 wt. % of the total composition, preferably 0.006 to 4 wt. % and preferably 0.05 to 2 wt. %. The stable liquid aqueous cleaning composition of any one of claims 1 to 11, further comprising a surfactant in a concentration of up to 50% by weight. % of the total composition, preferably at a concentration of 0.1 to 30 wt. %, preferably 0.2 to 25 wt. %. 4 · · 4 9 £ · £ 9? · · · · · · · · · · · · · · · · · · · · · 13. A stable liquid aqueous cleaning composition according to claim 12 wherein said surfactant is - zwitterionic surfactant or mixtures of zwitterionic surfactants, preferably a betaine or sulfobetaine surfactant or derivatives thereof or mixtures thereof according to the general formula I R ₂ R, -N ⁺ - (CH ₂ ) _n -Y- (I) R ₃ wherein R 1 is a hydrocarbon chain containing 1 to 24 carbon atoms, preferably 8 to 18, preferably 12 to 14, R ₂ to R ₃ are hydrocarbon chains containing 1 to 3 carbon atoms, preferably 1 carbon atom, n is an integer from 1 to 10, preferably 1 to 6 and preferably 1, Y is selected from the group consisting of carboxyl and sulfonyl radicals and wherein the sum of carbon atoms in the hydrocarbon chain R |, R ₂ and R ₃ ranges from about 14 to about 24, and / or an amphoteric surfactant or a mixture of amphoteric surfactants, preferably an amine oxide having the general formula R ₁ R ₂ R ₃ NO, wherein each of R 1, R ₂ and R ₃ is, independently of the others, a saturated, substituted or unsubstituted, linear or branched hydrocarbon chain containing 1 to 30 preferably R 1 is a saturated, substituted or unsubstituted, linear or branched hydrocarbon chain containing 6 to 20 carbon atoms, preferably 8 to 16 carbon atoms, preferably 8 to 10, and R ₂ and R ₃ are independently substituted or unsubstituted, linear or branched hydrocarbon chains having 1 to 4 carbon atoms, preferably 1 to 3 carbon atoms, and preferably methyl groups, or mixtures thereof. A stable liquid aqueous cleaning composition according to any one of claims 1 to 13, further comprising a solvent or solvent mixture in a concentration of up to 10% by weight. % of the total composition, preferably 0.1 to 8 wt. % and preferably 0.5 to 6 wt. %. 15. A stable liquid aqueous cleaning composition according to claim 14 wherein said solvent is selected from the group consisting of propylene glycol derivatives, class 2- (2-alkoxyethoxy) ethanol, class 2-alkoxyethoxyethanol, benzyl alcohol, methanol, ethanol. , isopropanol, diols and diol mixtures, and is preferably selected from propylene glycol derivatives, from the class of 2- (2-alkoxyethoxy) ethanol and mixtures thereof. • ft. * Ft. 3> Κ 4993 • ft ftft ft ftft ft · ft · ftftft ···· · · ·· ·· · ftftft ··· 73 ··· ··· · · ······ A stable liquid aqueous cleaning composition according to any one of claims 1 to 15, characterized in that it has a pH of between 8.1 and 10, preferably between 8.2 and 9.5, and preferably between 8.2 and 8.8. 17. A stable liquid aqueous cleaning composition according to any one of claims 1 to 16, which is packaged in a spray dispenser. A wipe comprising the composition of any one of the preceding claims.