EP2494025A1 - Antimicrobial cleaning agent for hard surfaces - Google Patents

Abstract

The invention relates to an surfactant-containing aqueous antimicrobially effective cleaning agent for hard surfaces, comprising at least one amphoteric polymer, one quaternary ammonium compound, and formic acid, that can be used for cleaning and/or antimicrobially treating hard surfaces, in particular in damp rooms such as bathrooms.

Description

 "Antimicrobial cleaner for hard surfaces"

The invention relates to a surfactant-containing aqueous antimicrobial hard surface cleaner comprising at least one acrylic copolymer, a quaternary ammonium compound and formic acid. The composition is useful in the cleaning and / or antimicrobial treatment of hard surfaces, especially in wet rooms such as bathrooms.

Especially in humid or warm, humid rooms, where bacteria and molds find ideal growth conditions, not only the simple cleaning but also the antimicrobial treatment of hard surfaces is useful and desirable. In particular, mold fungi, especially Aspergillus niger, have proven to be persistent and are considered as

Harmful known.

Also, an improvement in cleaning performance and / or a reduction in the

Resistant to soiling, especially against lime soils, would be desirable in order to rob the germs of their breeding ground and thus to a lower bacterial contamination of the surfaces.

It has now been found that a surfactant-containing aqueous agent containing at least one acrylic copolymer, a quaternary ammonium compound and formic acid, has a high antimicrobial activity against germs such as Staphylococcus aureus, Enterococcus hirae, Pseudomonas aeruginosa, Escherichia coli, Candida albicans and Aspergillus niger and next to it still shows an excellent cleaning performance.

An object of this application is therefore a surfactant-containing aqueous antimicrobial hard surface cleaner comprising at least one amphoteric polymer, a quaternary ammonium compound and formic acid.

The composition is particularly suitable for the cleaning and / or antimicrobial treatment of hard surfaces, especially in damp rooms, such as in bathrooms.

Another object of this application is therefore the use of a cleaning agent according to the invention for the cleaning and / or antimicrobial treatment of hard surfaces, especially in wet rooms such as bathrooms

In the context of the present invention are fatty acids or fatty alcohols or their derivatives - unless otherwise stated - representative of branched or unbranched carboxylic acids or alcohols or their derivatives having preferably 6 to 22 carbon atoms. The former are particularly preferred because of their vegetable base as based on renewable raw materials for environmental reasons, but without the teaching of the invention to them restrict. In particular, the oxo alcohols or their derivatives, which are obtainable, for example, by the RoELEN's oxo synthesis, can also be used correspondingly.

Whenever alkaline earth metals are referred to below as counterions for monovalent anions, this means that the alkaline earth metal is present only in half - as sufficient to charge balance - amount of substance as the anion.

Substances which also serve as ingredients of cosmetic products are referred to below, where appropriate, according to the International Nomenclature Cosmetic Ingredient (INCI) nomenclature. Chemical compounds carry an INCI name in English, plant ingredients are listed only after Linne in Latin, so-called trivial names such as "water", "honey" or "sea salt" are also given in Latin. The INCI names can be found in the International Cosmetic Ingredient Dictionary and Handbook - Seventh Edition (1997), published by The Cosmetic, Toiletry and Fragrance Association (CTFA), 1 101 17th Street, NW, Suite 300, Washington, DC 20036, USA, and contains more than 9,000 INCI names, as well as references to more than 37,000 trade names and technical names, including its distributors from over 31 countries. The International Cosmetic Ingredient Dictionary and Handbook assigns to the ingredients one or more chemical classes, such as polymer ethers, and one or more functions, such as surfactants-cleansing agents, which are further explained and discussed below possibly also referred to.

The indication CAS means that the following sequence of numbers is a name of the Chemical Abstracts Service.

Amphoteric polymer

 The agent of the invention contains an amphoteric polymer. As such, hydrophilic properties include, for example, copolymers of acrylic or methacrylic acid and MAPTAC (methacryloyl aminopropyl irimethyl ammonium chlorides,

Trimethyl ammonium propyl methacrylamide chloride), DADMAC (cfiallylc / ethyl ammonium chloride) or other polymerizable quaternary ammonium compound. Furthermore, it is also possible to use copolymers with AMPS (2-methylamido-2-methylpropanesulfonic acid). Polyethersiloxanes, ie copolymers of polymethylsiloxanes with ethylene oxide or propylene oxide segments, are further suitable polymers. Also usable

Acrylic polymers, maleic acid copolymers and polyurethanes with PEG (polyethylene glycol) units.

 Suitable polymers are, for example, under the trade names Mirapol Surf-S 100, 110, 200, 210, 400, 410, A 300, A 400 (Rhodia), Tegopren 5843 (Goldschmidt), Sokalan CP 9 (BASF) or Polyquart Ampho 149 (Cognis ) commercially available.

The agent of the invention preferably contains the amphoteric polymer in an amount of 0.01 to 1.0% by weight, preferably 0.05 to 0.5% by weight. Quaternary ammonium compound

Furthermore, the agent according to the invention contains a quaternary ammonium compound which contributes to the antimicrobial effectiveness of the agent. Suitable cationic surfactants of the formula (R ') are, for example, (R ") (R"') (R ^IV) N ⁺ X ^", in which R ¹ to R ^IV four identical or different, in particular two long and two short chain, Alkyl radicals and X ^"are an anion, in particular a halide ion, for example, didecyl-dimethyl-ammonium chloride, alkyl-benzyl-didecyl-ammonium chloride and mixtures thereof. Particularly suitable, however, are quaternary ammonium compounds of the abovementioned formula in which R ¹ and R "are two identical or different short-chain alkyl radicals, preferably methyl, R ¹ " is a relatively long-chain alkyl radical, R ^{IV is} an aromatic radical and X ^"is an anion, in particular a halide ion. Particular preference is given to using benzalkonium chloride.

 The agent of the invention preferably contains the quaternary ammonium compound, preferably benzalkonium chloride, in an amount of 0.05 to 10 wt .-%, preferably 0, 1 to 2.0 wt .-%.

formic acid

 In addition, the cleaning agent according to the invention contains formic acid (methanoic acid), the simplest aliphatic monocarboxylic acid. The formic acid is preferably contained in an amount of 1, 8 to 5 wt .-%.

surfactants

 The agent according to the invention also contains surface-active substances. Suitable surface-active substances for the agents according to the invention are surfactants,

in particular from the classes of anionic and nonionic surfactants. The agents preferably comprise at least one nonionic surfactant, particularly preferably a nonionic surfactant based on oleochemical, very particularly preferably a sugar surfactant, in particular alkylpolyglycoside (APG).

Alkylpolyglycosides are surfactants which can be obtained by the reaction of sugars and alcohols according to the relevant processes of preparative organic chemistry, wherein, depending on the nature of the preparation, a mixture of monoalkylated, oligomeric or polymeric sugars is obtained. Preferred alkylpolyglycosides are the alkylpolyglucosides, the alcohol particularly preferably being a long-chain fatty alcohol or a mixture of long-chain fatty alcohols having branched or unbranched C ₈ to C 18 -alkyl chains and the degree of oligomerization (DP) of the sugars between 1 and 10, preferably 1 to 6, in particular 1, 1 to 3, most preferably 1, 1 to 1, 7, is, for example, C ₈ -io-alkyl-1.5-glucoside (DP of 1, 5).

The agent according to the invention preferably contains at least one alkyl polyglycoside in an amount of 0.5 to 5% by weight, preferably 1 to 3% by weight. Other nonionic surfactants in the invention may be alkoxylates such as

Polyglycol ethers, fatty alcohol polyglycol ethers (fatty alcohol alkoxylates), alkylphenol polyglycol ethers, end-capped polyglycol ethers, mixed ethers and hydroxy mixed ethers and

Fatty acid polyglycol. Also useful are ethylene oxide, propylene oxide, block polymers and fatty acid alkanolamides and fatty acid polyglycol ethers. Other sugar surfactants (polyol surfactants), such as fatty acid glucamides, can be used.

Preferred fatty alcohol polyglycol ethers are alkoxylated, branched or unbranched, saturated or unsaturated C ₈ -22 alcohols with a degree of alkoxylation up to 30 with ethylene oxide (EO) and / or propylene oxide (PO), preferably ethoxylated Ci ₀ -18 fatty alcohols with a

Degree of ethoxylation of less than 30, preferably 1 to 20, in particular 1 to 12, more preferably 1 to 8, for example Ci ₂ -i4-fatty alcohol ethoxylates with 8 EO.

Anionic surfactants according to the invention may be aliphatic sulfates such as fatty alcohol sulfates, fatty alcohol ether sulfates, dialkyl ether sulfates, monoglyceride sulfates and aliphatic sulfonates such as alkanesulfonates, olefinsulfonates, ether sulfonates, n-alkyl ether sulfonates, ester sulfonates and lignosulfonates. Also usable in the context of the present invention

AI kylbenzolsulf onate, fatty acid cyanamides, sulfosuccinates (sulfosuccinic esters),

Sulfosuccinamates, sulfosuccinamides, fatty acid isethionates, acylaminoalkanesulfonates

(Fatty acid taurides), fatty acid sarcosinates, ether carboxylic acids and alkyl (ether) phosphates, and α-sulfo fatty acid salts, acyl glutamates, monoglyceride disulfates and alkyl ethers of glyceryl disulfate.

Preferred in the context of the present invention are the fatty alcohol sulfates and / or

Fatty alcohol ether sulfates, in particular the fatty alcohol sulfates. Fatty alcohol sulfates are products of sulfation reactions on corresponding alcohols, while fatty alcohol ether sulfates are products of sulfation reactions on alkoxylated alcohols. The person skilled in the art generally understands, under alkoxylated alcohols, the reaction products of alkylene oxide, preferably ethylene oxide, with alcohols, in the context of the present invention preferably with longer-chain alcohols. As a rule, n moles of ethylene oxide and one mole of alcohol, depending on the

Reaction conditions, a complex mixture of addition products of different degrees of ethoxylation. Another embodiment of the alkoxylation is the use of mixtures of the alkylene oxides, preferably the mixture of ethylene oxide and propylene oxide. Preferred fatty alcohol ether sulfates are the sulfates of lower ethoxylated fatty alcohols with 1 to 4 ethylene oxide units (EO), in particular 1 to 2 EO, for example 1.3 EO.

The anionic surfactants are usually used as salts, but also as acid. The salts are preferably alkali metal salts, alkaline earth metal salts, ammonium salts and mono-, di- or trialkanolammonium salts, for example mono-, di- or

Triethanolammoniumsalze, in particular lithium, sodium, potassium or ammonium salts, more preferably sodium or potassium salts, most preferably sodium salts. The agent according to the invention can furthermore contain amphoteric surfactants. To the

Amphoteric surfactants (zwitterionic surfactants) which can be used according to the invention include betaines, amine oxides, alkylamidoalkylamines, alkyl-substituted amino acids, acylated amino acids or biosurfactants, of which the betaines are particularly preferred within the scope of the teaching according to the invention.

Suitable betaines are the alkylbetaines, the alkylamidobetaines, the imidazolinium betaines, the sulfobetaines (INCI Sultaines) and the amidosulfobetaines and the phosphobetaines. The amine oxides suitable according to the invention include alkylamine oxides, in particular

Alkyldimethylamine oxides, alkylamidoamine oxides and alkoxyalkylamine oxides.

Other common ingredients

 The composition according to the invention can also contain further customary ingredients of cleaning agents, for example further surfactants, acids, bases, solvents, disinfectants, pH adjusters, fragrances and dyes, buffers, viscosity regulators, corrosion inhibitors, complexing agents, film formers, further antimicrobial agents, builders, bleaching agents, Enzymes, organic and inorganic salts, optical brighteners, antioxidants, opacifiers, hydrotropes, abrasives,

Preservatives, oxidizers or insecticides and mixtures thereof.

acids

 In addition to formic acid, the agent according to the invention may contain one or more further acids. It is possible to use organic and / or inorganic acids. Examples of usable organic acids are lactic acid, citric acid, acetic acid, glycolic acid, succinic acid, adipic acid, malic acid, tartaric acid and gluconic acid, while as inorganic acids, for example phosphoric acid, hydrochloric acid, nitric acid, sulfuric acid or sulfamic acid can be used. Lactic acid (2-hydroxypropionic acid) and citric acid (2-hydroxy-1,2,3-propanetricarboxylic acid), in particular lactic acid, are preferred here. Preferably, the acid is contained in an amount of 0, 1 to 3.0 wt .-%, particularly preferably 0.5 to 2.0 wt .-%.

Volatile alkali; bases

 Furthermore, the agents according to the invention may contain volatile alkali. As such, ammonia and / or alkanolamines, which may contain up to 9 C atoms in the molecule, are used. As alkanolamines, the ethanolamines are preferred and of these in turn the

Monoethanolamine. The content of ammonia and / or alkanolamine is preferably not more than 2 wt .-%; ammonia is particularly preferably used.

In addition, the cleaning agents according to the invention may also contain small amounts of bases. Preferred bases are selected from the group of alkali and alkaline earth metal hydroxides and carbonates, in particular the alkali metal hydroxides, of which potassium hydroxide and especially sodium hydroxide is particularly preferred. The addition of alkaline substances also serves to adjust the desired pH. This lies in the agent according to the invention in the acidic range, preferably between 1 and 5, particularly preferably between 2 and 4, in particular at 3.

solvent

As a further component, the cleaning agent according to the invention may contain one or more water-soluble or water-miscible organic solvents. Suitable solvents are for example, saturated or unsaturated, preferably saturated, branched or unbranched CI_ ₂ o-hydrocarbons, preferably C ₂ i5 hydrocarbons having at least one hydroxy group and optionally one or more ether functions CO- C, ie the carbon atom chain interrupting oxygen atoms. Preferred solvents are the - optionally etherified with a unilaterally ₆ alkanol CI_ - C ₂ -6-alkylene glycols and poly-C ₂ -3-alkylene glycol ethers with an average of 1 to 9 identical or different, preferably identical, alkylene glycol per molecule as well as the CI_ ₆ Alcohols, preferably ethanol, n-propanol or iso-propanol, especially ethanol. But also aromatic group-containing solvents can be used in a suitable manner in the inventive agent, such as ethylene glycol monophenyl ether (monophenyl glycol, phenoxyethanol).

Exemplary solvents are the following INCI compounds: Alcohol (ethanol), buteth-3, butoxy diglycol, butoxyethanol, butoxyisopropanol, butoxypropanol, n-butyl alcohol, t-butyl alcohol, butylene glycol, butyloctanol, diethylene glycol, dimethoxy diglycol, dimethyl ether, Dipropylene glycol, ethoxydiglycol, ethoxyethanol, ethyl hexanediol, glycol, hexanediol, 1, 2,6-hexanetriol, hexyl alcohol, hexylene glycol, isobutoxypropanol, isopentyldiol, isopropyl alcohol (isopropanol), 3-methoxybutanol, methoxy diglycol, methoxyethanol, methoxy isopropanol, methoxymethylbutanol, methoxy PEG-10, methylal, methyl alcohol, methyl hexyl ether, methylpropanediol, neopentyl glycol, PEG-4, PEG-6, PEG-7, PEG-8, PEG-9, PEG-6 methyl ether, pentylenes Glycol, phenoxyethanol, PPG-7, PPG-2-buteth-3, PPG-2 butyl ether, PPG-3 butyl ether, PPG-2 methyl ether, PPG-3 methyl ether, PPG-2 propyl ether, propanediol, propyl alcohol (n-propanol), propylene glycol, propylene glycol butyl ether , Propylene glycol, propyl ether, tetrahydrofurfuryl alcohol, trimethylhexanol.

The composition according to the invention contains water-soluble or water-miscible organic solvents, preferably in amounts of up to 15% by weight, more preferably 0.1 to 10% by weight, in particular 0.5 to 5% by weight.

complexing

INCI chelating agents, also called sequestrants, are ingredients that are capable of complexing and inactivating metal ions to prevent their detrimental effects on the stability or appearance of the agents, such as clouding. On the one hand, it is important to use calcium and magnesium ions, which are incompatible with numerous ingredients Complex water hardness. On the other hand, the complexation of the ions of heavy metals such as iron or copper delays the oxidative decomposition of the finished agents. In addition, the complexing agents support the cleaning effect. In a preferred embodiment, the agent according to the invention therefore contains one or more complexing agents.

For example, the following are suitable, if possible according to INCI,

Complexing agent: aminotrimethylene phosphonic acid, beta-alanine diacetic acid, calcium

Disodium EDTA, Citric Acid, Cyclodextrin, Cyclohexanediamine Tetraacetic Acid, Diammonium Citrate, Diammonium EDTA, Diethylenetriamine Pentamethylene Phosphonic Acid, Dipotassium EDTA, Disodium Azacycloheptane Diphosphonate, Disodium EDTA, Disodium Pyrophosphate, EDTA, Etidronic Acid (HEDP, Hydroxyethylidene diphosphonic acid), Galactic Acid , Gluconic Acid, Glucuronic Acid, HEDTA, Hydroxypropyl Cyclodextrin, Methyl Cyclodextrin, Pentapotassium Triphosphate, Methyl Glycine Diacetic Acid (MGDA), Pentasodium Aminotrimethylene Phosphonate, Pentasodium Ethylenediamine Tetramethylene Phosphonate, Pentasodium Pentetate,

Pentasodium Triphosphates, Pentetic Acid, Phytic Acid, Polyamines, Potassium Citrate, Potassium EDTMP, Potassium Gluconates, Potassium Polyphosphates, Potassium Trisphosphonomethylamine Oxides, Ribonic Acid, Sodium Chitosan, Methylene Phosphonates, Sodium Citrate, Sodium

Diethylenetriamine Pentamethylene Phosphonates, Sodium Dihydroxyethylglycinate, Sodium EDTMP, Sodium Gluceptate, Sodium Gluconate, Sodium Glycereth-1 Polyphosphate, Sodium Hexametaphosphate, Sodium Metaphosphate, Sodium Metasilicate, Sodium Phytate, Sodium Polydimethylglycinophenol Sulfonate, Sodium Trimetaphosphate, TEA-EDTA, TEA Polyphosphate, Tetrahydroxyethyl Ethylenediamine , Tetrahydroxypropyl Ethylenediamine, Tetrapotassium

Etidronates, tetrapotassium pyrophosphates, tetrasodium EDTA, tetrasodium etidronates,

Tetrasodium Pyrophosphate, Tripotassium EDTA, Trisodium Dicarboxymethyl Alaninate, Trisodium EDTA, Trisodium HEDTA, Trisodium MGDA, Trisodium NTA and Trisodium Phosphate.

Complexing agents are preferably used in amounts of up to 5 wt .-%, particularly preferably 0, 1 to 2 wt .-%.

Viscosity regulators

 The agent according to the invention may further contain viscosity regulators. suitable

Viscosity regulators are, for example, organic natural thickeners (agar-agar, carrageenan, xanthan, tragacanth, gum arabic, alginates, pectins, polyoses, guar flour,

Locust bean gum, starch, dextrins, gelatin, casein), organic modified natural products (carboxymethyl cellulose and other cellulose ethers, hydroxyethyl and propyl cellulose and the like, core flour ethers), organic fully synthetic thickeners (polyacrylic and polymethacrylic compounds, vinyl polymers, polycarboxylic acids, polyethers, polyimines, Polyamides) and inorganic thickeners (polysilicic acids, clay minerals such as montmorillonites, zeolites, silicas). Other disinfectants and preservatives

 The cleaning agent according to the invention may contain one or more further antimicrobial

Active ingredients, preferably in an amount of up to 1 wt .-%.

The terms disinfection, sanitation, antimicrobial action and antimicrobial agent have the usual meaning in the context of the teaching of the invention, for example, by KH Wallhäußer in "Practice of sterilization, disinfection - Conservation: germ identification - company hygiene" (5th ed. - Stuttgart, New York : Thieme, 1995). While disinfection in the narrower sense of the medical practice means the killing of - in theory all - infectious germs, sanitation is to be understood as the greatest possible elimination of all - including the saprophytic - normally harmless to humans saprophytic - germs.

Here, the extent of disinfection or sanitation depends on the antimicrobial effect of the applied agent, which decreases with decreasing content of antimicrobial agent or increasing dilution of the agent for use.

According to the invention, for example, antimicrobial agents from the groups of alcohols, aldehydes, antimicrobial acids or their salts, carboxylic acid esters, acid amides, phenols, phenol derivatives, diphenyls, diphenylalkanes, urea derivatives, oxygen, nitrogen acetals and formals, benzamidines, isothiazoles and their suitable Derivatives such as isothiazolines and isothiazolinones, phthalimide derivatives, pyridine derivatives, antimicrobial surface active agents

Compounds, guanidines, antimicrobial amphoteric compounds, quinolines, 1, 2-dibromo-2,4-dicyanobutane, iodo-2-propynyl-butyl-carbamate, iodine, iodophores and peroxides. Preferred antimicrobial agents are preferably selected from the group comprising ethanol, n-propanol, i-propanol, 1, 3-butanediol, phenoxyethanol, 1, 2-propylene glycol, glycerol,

Undecylenic acid, citric acid, lactic acid, benzoic acid, salicylic acid, thymol, 2-benzyl-4-chlorophenol, 2,2'-methylenebis (6-bromo-4-chlorophenol), 2,4,4'-trichloro-2 ' -hydroxydiphenyl ether, N- (4-chlorophenyl) -N- (3,4-dichlorophenyl) -urea, N, N '- (1, 10-decanediyldi-1-pyridinyl-4-ylidene) -bis (1-octanamine ) dihydrochloride, N, N'-bis (4-chlorophenyl) -3,12-diimino-2,4,1,1,13-tetraazatetradecandiimidamide, antimicrobial quaternary surface active compounds, guanidines. Preferred antimicrobial surface-active quaternary compounds contain an ammonium, sulfonium, phosphonium, iodonium or arsonium group, as described, for example, by K. H. Wallhäußer in "Praxis der Sterilisation, Desinfektion - Konservierung:

Germ Identification - Industrial Hygiene "(5th edition - Stuttgart, New York: Thieme, 1995).

Dyes and perfumes

 The agent may contain one or more fragrances, preferably in an amount of 0.01 to 1% by weight, in particular 0.02 to 0.8% by weight, particularly preferably 0.05 to 0.5% by weight, most preferably 0, 1 to 0.3 wt .-%, and / or one or more dyes (INCI Colorants),

preferably in an amount of 0.0001 to 0, 1 wt .-%, in particular 0.0005 to 0.05 wt .-%, particularly preferably 0.001 to 0.01 wt .-%, included corrosion inhibitors

 Furthermore, the agent may contain one or more corrosion inhibitors, preferably in an amount of from 0.01 to 10% by weight, in particular from 0.1 to 5% by weight, more preferably from 0.5 to 3% by weight, most preferably 1 up to 2% by weight.

Suitable corrosion inhibitors (INCI Corrosion Inhibitors) are, for example, the following named according to INCI: Cyclohexylamine, Diammonium Phosphate, Dilithium Oxalate, Dimethylamino Methylpropanol, Dipotassium Oxalate, Dipotassium Phosphate, Disodium

Phosphates, disodium pyrophosphates, disodium tetrapropenyl succinates, hexoxyethyl

Diethylammonium, phosphates, nitromethanes, potassium silicates, sodium aluminates, sodium hexametaphosphates, sodium metasilicates, sodium molybdate, sodium nitrites, sodium oxalates, sodium silicates, stearamidopropyl dimethicones, tetrapotassium pyrophosphates, tetrasodium pyrophosphates, triisopropanolamines.

bleach

According to the invention, bleaching agents can be added to the cleaning agent. Suitable bleaching agents include peroxides, peracids and / or perborates, more preferably H ₂ 0 ₂ .

enzymes

 The agent may also contain enzymes, preferably proteases, lipases, amylases, hydrolases and / or cellulases. They can be added to the composition according to the invention in any form established according to the prior art. In the case of liquid or gel-containing compositions, these include, in particular, solutions of the enzymes, advantageously as concentrated as possible, sparing in water and / or added with stabilizers. Alternatively, the enzymes can be encapsulated, for example, by spray-drying or extruding the enzyme solution together with a preferably natural polymer or in the form of capsules, for example those in which the enzymes are entrapped as in a solidified gel or in core-shell type in which an enzyme-containing core is coated with a water, air and / or chemical impermeable protective layer. In deposited layers, further active ingredients, for example stabilizers, emulsifiers, pigments, bleaches or dyes, may additionally be applied. Such capsules are applied by methods known per se, for example by shaking or rolling granulation or in fluid-bed processes. Advantageously, such granules, for example by applying polymeric film-forming agent, low in dust and storage stable due to the coating.

In addition, enzyme stabilizers may be present in enzyme-containing agents in order to protect an enzyme contained in an agent according to the invention from damage such as, for example, inactivation, denaturation or decomposition, for example by physical influences, oxidation or proteolytic cleavage. Suitable enzyme stabilizers, in each case depending on the enzyme used, are in particular: benzamidine hydrochloride, borax, boric acids, boronic acids or their salts or esters, especially derivatives with aromatic groups, such as substituted

Phenylboronic acids or their salts or esters; Peptide aldehydes (oligopeptides with reduced C-terminus), amino alcohols such as mono-, di-, triethanol- and -propanolamine and mixtures thereof, aliphatic carboxylic acids up to d ₂ , such as succinic acid, others

Dicarboxylic acids or salts of said acids; end-capped

Fatty acid; lower aliphatic alcohols and especially polyols, for example glycerol, ethylene glycol, propylene glycol or sorbitol; and reducing agents and antioxidants such as sodium sulfite and reducing sugars. Other suitable stabilizers are known in the art. Combinations of stabilizers are preferably used, for example the combination of polyols, boric acid and / or borax, the combination of boric acid or borate, reducing salts and succinic acid or other dicarboxylic acids or

Combination of boric acid or borate with polyols or polyamino compounds and with reducing salts.

The agents according to the invention are preferably used for cleaning hard surfaces. The antimicrobial treatment of hard surfaces is possible with the agent. Hardness

Surfaces in the context of this application are windows, mirrors and other glass surfaces, surfaces made of ceramic, plastic, metal or wood and varnished wood, which are found in household and commercial, such as bathroom ceramics, kitchen surfaces or floors.

In particular, however, such surfaces are occasionally or frequently flushed with dirty or even clean water, for example, WCs, showers, bathtubs and floors in bathrooms or kitchen surfaces, but especially surfaces, such as occur especially in wet rooms such as bathrooms ,

A further subject of the application is therefore the use of a cleaning agent according to the invention for the cleaning and / or antimicrobial treatment of hard surfaces, in particular in damp rooms such as bathrooms.

embodiments

Detergents E1 to E3 according to the invention were prepared and tested for their antimicrobial effectiveness and their ability to remove dirt. In addition were

 Comparative formulations prepared V1 to V3. The compositions can be taken from the table below. All quantities are in wt .-%, based on the active substance.

 The nonionic surfactant used was an alkylpolyglycoside (APG 220 UPW, Cognis), and the acrylic copolymer used was Mirapol Surf S 1 10 (Rhodia). The sodium hydroxide was added to adjust the pH in the amount required.

To test the antimicrobial efficacy, tests were carried out in accordance with the European test standards EN 1276, EN 1650 and EN 13679.

 While both the formulations according to the invention and the comparative formulations passed the test according to EN 1276, in the two other tests only the

 convincing means of the invention.

The soil dissolving power was also checked. In a standardized test, the percentage of removed soil was visually determined after 100 wiping operations:

E1 E2 E3 V1 V2 V3

Dirt removal (%) 50 52 60-70 15 30 12

Claims

claims: A surfactant-containing aqueous antimicrobial hard surface cleaner, characterized in that it comprises at least one amphoteric polymer, a quaternary ammonium compound and formic acid. 2. Cleaning agent according to claim 1, characterized in that as surfactant  at least one alkyl polyglycoside is used. 3. Cleaning agent according to one of claims 1 and 2, characterized in that it contains the amphoteric polymer in an amount of 0.01 to 1, 0 wt .-%, preferably 0.05 to 0.5 wt .-%. 4. Cleaning agent according to one of claims 1 to 3, characterized in that it contains a quaternary ammonium compound, preferably benzalkonium chloride, in an amount of 0.05 to 10 wt .-%, preferably 0, 1 to 2.0 wt .-% , 5. Cleaning agent according to one of the preceding claims, characterized in that it contains formic acid in an amount of 1, 8 to 5 wt .-%. 6. Cleaning agent according to one of the preceding claims, characterized in that it contains at least one Alkylpolyglykosid in an amount of 0.5 to 5 wt .-%, preferably 1 to 3 wt .-%. 7. Cleaning agent according to one of the preceding claims, characterized in that it contains other conventional ingredients of cleaning agents, for example other surfactants, acids, bases, solvents, disinfectants, pH adjusters, fragrances and dyes, buffers, viscosity regulators, corrosion inhibitors, complexing agents, film formers , further antimicrobial agents, builders, bleaches, enzymes, organic and inorganic salts, optical brighteners, antioxidants, opacifiers, hydrotropes, abrasives, preservatives, oxidizing agents or insecticides and mixtures thereof 8. Use of a cleaning agent according to one of the preceding claims for cleaning and / or antimicrobial treatment of hard surfaces, especially in wet rooms such as bathrooms.