WO2001007547A1

WO2001007547A1 - Cleansing agent for hard surfaces

Info

Publication number: WO2001007547A1
Application number: PCT/EP2000/006648
Authority: WO
Inventors: Georg Meine; Simone Osterhoff
Original assignee: Henkel Kommanditgesellschaft Auf Aktien
Priority date: 1999-07-21
Filing date: 2000-07-12
Publication date: 2001-02-01
Also published as: TNSN00160A1; DE19933404A1; CA2314330A1; AR024903A1

Abstract

The invention concerns a cleansing agent wherein are used one or several sugar-type surfactants to adjust the viscosity of an aqueous product containing surfactants. An aqueous agent containing surfactants, thus thickened, designed for cleaning and/or disinfecting and/or sanitizing hard surfaces contains at least a sugar-type surfactant and at least an antimicrobial active principle. Moreover, at least a sugar-type surfactant may be used to solubilize at least a perfume in an aqueous agent containing surfactants and it may also be used in a method for producing a thickened aqueous agent containing surfactants to adjust the viscosity thereof.

Description

"Cleaning agents for hard surfaces"

The invention relates to the use of one or more sugar surfactants for adjusting the viscosity of an aqueous surfactant and a correspondingly thickened aqueous surfactant containing sugar surfactant and a surface-active quaternary compound with an antimicrobial effect and its use for cleaning and / or disinfection or sanitation, in particular of hard surfaces.

Universally usable cleaning agents for all hard, wet or damp wipeable surfaces in the household and business are known as so-called all-purpose cleaners and are predominantly neutral to weakly alkaline aqueous liquid products, the 1 to 30 wt .-% surfactants, 0 to 5 wt .-% builder (e.g. citrates, gluconates, soda, polycarboxylates), 0 to 10% by weight hydrotropes (e.g. alcohols, urea), 0 to 10% by weight water-soluble solvents (e.g. alcohols, glycol ethers) and optionally among others Contain skin protection agents, dyes and fragrances. It is usually used as an approx. 1% solution in water, also undiluted for local stain removal. Ready-to-use all-purpose cleaners are also commercially available as so-called spray cleaners.

In order to achieve a more precise metering and longer contact time on inclined and in particular vertical surfaces compared to water-thin liquids, such cleaning agents often have an increased viscosity.

In addition to the high primary cleaning effect of such a cleaning agent, an antimicrobial effect is also increasingly expected today. For this purpose, antimicrobial agents, for example surface-active quaternary compounds, are incorporated into the cleaning agents.

However, attempts are made to incorporate an antimicrobial agent, in particular a surface-active quaternary compound, into a polymer-thickened cleaning agent or to thicken a solution of an antimicrobial agent, in particular a surface-active quaternary compound, with a polymeric thickening agent, such as polyacrylate or polysaccharide such as hydroxyethyl cellulose or xanthan , so can these prove to be more or less incompatible and then either run in the undiluted cleaning agent or at the latest when it is diluted to form undissolved or insoluble residues

International patent application WO 96/10069 (Henkel KGaA) discloses disinfectant cleaning agents for hard surfaces with a disinfectant and a surfactant combination of an alkyl polyglycoside and an alkyl ether that enhances its germ-reducing effect, but nothing about their theological properties

International water application WO 97/00609 (Henkel Corp) discloses non-water disinfectant cleaning agent concentrates which contain a solubilizing amount of a mixture of two alkyl polyglycosides with different average chain lengths of the alkyl radicals, but not their theological properties

From European patent application EP 0 444 462 A (Huls), liquid, foaming cleaning agents with a C _7-10 and a C _11-18 alkyl polyglycoside as well as up to 10% by weight solubilizers are known, to which water-soluble polymers are added to adjust suitable viscosity with which the disclosure on viscosity is already exhausted

The object of the present invention was to provide a thickened cleaning agent for hard surfaces with an antimicrobial agent while overcoming the aforementioned problems

This task is solved by adjusting the viscosity of the cleaning agent with the aid of sugar surfactants

The invention therefore relates to the use of one or more sugar surfactants to adjust the viscosity of an aqueous surfactant

The second object of the invention is accordingly a thickened aqueous surfactant-containing agent, suitable for cleaning and / or disinfection or sanitation of hard surfaces, containing one or more sugar surfactants and at least one antimicrobial agent The third object of the invention is a method for producing a thickened aqueous surfactant-containing agent, in which the viscosity of the agent is adjusted by adding one or more sugar surfactants

The teaching according to the invention enables the viscosity of aqueous surfactant-containing agents to be adjusted in a simple and efficient manner and without the use of a viscosity regulator, so that polymeric thickeners which are more or less incompatible with surface-active quaternary compounds can be dispensed with. The agents according to the invention are notable for a high level Cleaning performance, antimicrobial effect, good storage stability and favorable cold behavior from. A particular advantage of the invention is the multiple function of the sugar surfactant component, in particular its dual function, on the one hand making a significant contribution to the cleaning ability and on the other hand acting as a viscosity regulator Selection of the amount of sugar surfactant according to the desired cleaning ability, while the viscosity is adjusted via the design of the sugar component, and thus enables particularly efficient use of the zuc kertenside

Sugar surfactants in the context of the teaching according to the invention are understood to mean nonionic sugar surfactants

In the context of the teaching according to the invention, the terms disinfection, sanitation, antimicrobial action and antimicrobial active substance have the technical meaning which, for example, KH Wallhausser in "Practice of Sterilization, Disinfection - Preservation Germ Identification - Industrial Hygiene" (5 ed. - Stuttgart, New York Thieme, 1995 ) is reproduced While disinfection in the narrower sense of medical practice means the killing of - theoretically - all infectious germs, sanitation means the greatest possible honor of all - including the normally harmless saprophytic - germs. This is the extent of Disinfection or sanitation depending on the antimicrobial effect of the agent used, which decreases with decreasing content of antimicrobial agent or increasing dilution of the agent for use

Unless otherwise stated, the embodiments or configurations of the invention described below always relate to all objects of the invention, ie uses, means and methods, even if they are explicitly carried out only for one object, for example a means or a use sugar surfactants

Sugar surfactants are known surface-active compounds, which include, for example, the sugar surfactant classes of alkyl glucose esters, aldobionamides, gluconamides (sugar acid amides), glycerol amides, glycerol glycolipids, polyhydroxy fatty acid amide sugar surfactants (sugar amides) and alkyl polyglycosides, such as those described in WO 97/00609 (Henkel Corporation) and the publications cited therein (pages 4 to 12), to which reference is made in this regard and the content of which is hereby incorporated into this application. Preferred sugar surfactants within the framework of the teaching according to the invention are the alkyl polyglycosides and the sugar amides and their derivatives, in particular their ethers and esters. The ethers are the products of the reaction of one or more, preferably one, sugar hydroxy group with a compound containing one or more hydroxy groups, for example C _1-22 alcohols or glycols such as ethylene and / or propylene glycol, the sugar hydroxy group also comprising polyethylene glycol - And / or polypropylene glycol residues can wear. The esters are the reaction products of one or more, preferably one, sugar hydroxy group with a carboxylic acid, in particular a C 1-8 fatty acid.

sugar amides

Particularly preferred sugar amides satisfy the formula R'C (O) N (R ") [Z], in which R 'is a linear or branched, saturated or unsaturated acyl radical, preferably a linear unsaturated acyl radical, with 5 to 21, preferably 5 to 17, in particular 7 to 15, particularly preferably 7 to 13 carbon atoms, R "for a linear or branched, saturated or unsaturated alkyl radical, preferably a linear unsaturated alkyl radical, with 6 to 22, preferably 6 to 18, in particular 8 to 16, particularly preferably 8 to 14 carbon atoms, a C _1-5 alkyl radical, in particular a methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, fe / butyl or n-pentene radical, or hydrogen and Z for a sugar residue, ie a monosaccharide residue. Particularly preferred sugar amides are the amides of glucose, the glucamides, for example lauroyl-methyl-glucamide.

Alkylpolyglykoside

The alkyl polyglycosides (APG) are particularly preferred sugar surfactants in the context of the teaching according to the invention and preferably satisfy the general formula R ¹ O (AO) _a [G] _x , in which R ^{1 is} a linear or branched, saturated or unsaturated alkyl radical having 6 to 22, preferably 6 to 18, in particular 8 to 16, particularly preferably 8 to 14 carbon atoms, [G ] for a glycosidically linked sugar residue and x for a number from 1 to 10 and AO for an alkyleneoxy group, in particular a C _2-4 alkyleneoxy group, e.g. B. an ethyleneoxy or propyleneoxy group, and a stand for the average degree of alkoxylation from 0 to 20. The group (AO) _{a may} also contain various alkyleneoxy units, e.g. B. ethyleneoxy and propyleneoxy units, in which case a is the average total degree of alkoxylation, ie the sum of the degree of ethoxylation and propoxylation. Unless otherwise specified below, the alkyl radicals R ^{1 of} the APG are linear saturated radicals with the specified number of carbon atoms.

APG are non-ionic surfactants and are known substances that can be obtained using the relevant methods of preparative organic chemistry. The index number x indicates the degree of oligomerization (DP degree), i.e. H. the distribution of mono- and oligoglycosides, and stands for a number between 1 and 10. While x must always be an integer in a given compound and can above all assume the values x = 1 to 6, the value x is for a specific alkyl glycoside an analytically calculated quantity, which usually represents a fractional number. Alkyl glycosides with an average degree of oligomerization x of 1.1 to 3.0 are preferably used. From an application point of view, preference is given to those alkyl glycosides whose degree of oligomerization is less than 1.7 and in particular between 1.2 and 1.6. Xylose, but in particular glucose, is preferably used as glycosidic sugar.

The alkyl or alkenyl radical R ¹ can be derived from primary alcohols having 8 to 18, preferably 8 to 14, carbon atoms. Typical examples are capronic alcohol, capric alcohol, capric alcohol and undecyl alcohol and their technical mixtures, such as those obtained in the course of the hydrogenation of technical fatty acid methyl esters as linear or in the course of the hydrogenation of aldehydes from RoELEN's oxosynthesis as branched alcohols.

However, the alkyl or alkenyl radical R ¹ is preferably derived from lauryl alcohol, myristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol or oleyl alcohol. Elaidyl alcohol, petroselinyl alcohol, arachidyl alcohol, gadolinyl alcohol, behenyl alcohol, erucyl alcohol and their technical mixtures are also to be mentioned. Particularly preferred APGs are not alkoxylated (a = 0) and satisfy formula I,

R ¹ O [G] _x (I)

in R ¹ as before for a linear or branched, saturated or unsaturated alkyl radical having 4 to 22 carbon atoms, [G] for a glycosidically linked sugar radical, preferably glucose radical, and x for a number from 1 to 10, preferably 1.1 to 3, in particular 1, 2 to 1, 6. Accordingly, preferred alkyl polyglycosides are, for example, C _8-10 -, and C _12-ι ₄ alkyl polyglucoside with an average degree of 1, 4 or 1, 5, in particular C. ₈ ₁₀ - alkyl-1, 5-glucoside and C ₁₂ . _14- alkyl-1,4-glucoside.

Different sugar surfactants

In a particularly preferred embodiment of the invention, a combination of at least two different sugar surfactants is used. The different sugar surfactants can belong to different sugar surfactant classes, for example an alkyl polyglycoside and a sugar amide, or the same sugar surfactant classes, for example two different sugar amides or two different alkyl polyglycosides. The difference can lie in the sugar surfactant class and / or in structural features of the respective sugar surfactant class. Different structural features of a sugar surfactant class can, for example in the case of the alkyl polyglycosides and sugar amides, one or more differences in the alkyl radical R ¹ or R ', in the case of the sugar amides also in the alkyl radical R ", in the type of sugar G or Z, and in the case of the alkyl polyglycosides in the DP degree, and in the derivatization, ie etherification or esterification, and in the case of the alkyl polyglycosides, furthermore lie in the alkoxylation.

Preferably, the two or more sugar surfactants of the combination differ, inter alia or alone, in the alkyl radical, of which each sugar surfactant has at least one - sometimes also two, but usually not more - which, depending on the sugar surfactant class, up to about 18, 20, 24 or can even comprise 36 carbon atoms and which, for example in the case of the alkyl polyglycosides and sugar amides, is R ¹ or R 'and optionally R ". The alkyl radicals can be in the average chain length, the average number of carbon atoms or in the Differentiate structure, ie be linear or branched and / or saturated or - one or more - unsaturated Linear saturated alkyl radicals with a different mean chain length or number of carbon atoms of preferably at least 1, in particular, are particularly advantageous at least 2 and most preferably at least 3, for example about 4, while the two or more sugar surfactants are otherwise as similar as possible or even identical.

A combination of at least two different alkyl polyglycosides which differ in the alkyl radical, degree of DP and / or glycoside is preferably used. The alkyl radicals can differ as described above. Linear saturated alkyl radicals with a different mean chain length with a similar DP degree, ie with a difference in DP degrees of not more than 1, preferably not more than 0.5 and in particular not more than 0.2, and the same glycoside are particularly advantageous , The difference in the average chain length or number of carbon atoms is preferably at least 1, in particular at least 2 and extremely preferably at least 3, for example about 4. Preferably a C _8-10 and a C _12-14 alkyl polyglucoside are combined, in particular C ₈ . _10- alkyl-1, 5-glucoside and C ₁₂ . _14- alkyl-1, 4-glucoside.

In the case of a binary combination of sugar surfactants with alkyl residues of a different average chain length, the weight ratio of shorter-longer-chain sugar surfactant, in particular of shorter-chain to longer-chain alkyl polyglycoside, is usually 99 to 1 to 1 to 99, preferably 9 to 1 to 1 to 9, in particular 4 to 1 to 1 to 7, particularly preferably 2 to 1 to 1 to 5, extremely preferably 1 to 1 to 1 to 4, for example 2 to 3, 1 to 2, 1, 5 to 3.5 or 1 to 3, or the proportion by weight of the longer-chain sugar surfactant, based on the sugar surfactant component, preferably at least 50%, in particular 60 to 90%, particularly preferably 70 to 80%, for example 75%.

Within the framework of the teaching according to the invention, three or more different sugar surfactants can also be combined, but this does not bring any advantages which overcompensate the complication of the sugar surfactant component compared to the binary combination.

The content of sugar surfactant, preferably alkyl polyglycoside, is usually 0.1 to 30% by weight, preferably 0.5 to 25% by weight, in particular 1 to 20% by weight, particularly preferably 2 to 15% by weight, extremely preferably 4 to 12% by weight, for example 10% by weight, but can also be up to 50% by weight in a highly concentrated embodiment. viscosity

The viscosity of the thickened agents according to the invention is determined at values determined at 20 ° C. according to Brookfield using a Brookfield DV 11+ viscometer and spindle 31 at a speed (shear rate) of 30 min ^-1 , usually from 10 to 1000 mPa · s, preferably 50 up to 500 mPa-s, in particular 80 to 300 mPa-s, particularly preferably 100 to 200 mPa-s, for example 150.

According to the invention, the viscosity is adjusted by using one or more sugar surfactants, preferably one or more alkyl polyglycosides. A combination of at least two different sugar surfactants as described above is particularly preferably used here. The amount of sugar surfactant, the type of sugar surfactant and / or the composition of the sugar surfactant combination is varied until the desired viscosity is reached. The viscosity-controlling properties of a sugar surfactant or a sugar surfactant mixture, in particular an alkylpolyglycoside or an alkylpolyglycoside mixture, in the respective aqueous surfactant-containing agent can be determined by simple routine tests, as exemplified below, and the sugar surfactant component can then be selected accordingly. For example, while with individual alkyl polyglycosides or sugar amides the viscosity-increasing effect of a certain amount of sugar surfactant generally increases with increasing chain length or number of carbon atoms in the alkyl radical, when changing the mixing ratio of a sugar surfactant combination, several viscosity maxima and minima can be run through, such as also emerges from the following examples.

In addition, thickeners and / or solvents can be used to adjust the viscosity. However, this is not necessary in the context of the teaching according to the invention, so that in a preferred embodiment of the invention, thickeners or solvents, preferably thickeners, in particular polymeric thickeners, particularly preferably thickeners and solvents, are dispensed with.

cold stability

In addition to and in the same way as the viscosity, the cold stability, ie cold cloud and clear point, can be controlled, improved or optimized. DerKältetrü- Practice point is the temperature at which the initially clear medium shows a first slight turbidity during cooling The clear point is the temperature at which the initially cloudy medium is completely clear for the first time during heating The cold stability is higher, the lower the cold turbidity and clear point In particular, the use of two or more sugar surfactants permits the additional optimization of the cold stability for a certain viscosity by varying the sugar surfactant combination, as can be seen from the examples below

The fourth object of the invention is accordingly the use of one or more sugar surfactants for controlling the cold clouding and / or clearing point of an aqueous surfactant-containing agent

The clear point is usually brought to a temperature of not higher than 18 ° C., preferably not higher than 15 ° C., in particular not higher than 11 ° C., particularly preferably not higher than 6 ° C., most preferably not higher than 1 ° C., for example 11 10 0.5 or 0 ° C., the cold cloud point is usually set to a temperature of not higher than 18 ° C., preferably not higher than 10 ° C., in particular not higher than 5 ° C., particularly preferably not higher than 0 ° C, most preferably not higher than -4 ° C, for example 0.5, 0, -0.5, -1, 5, -4, -8 or -9.5 ° C, set lower limits, the exceeding of which has a disadvantageous effect , there is no cold clouding and clearing point. Usually, the clearing point / cold clouding point is above -10 ° C / -20 ° C and temperatures in the range of around 0 ° C / -10 ° C are usually not significantly lower

Antimicrobial agent

For the antimicrobial effect, the agent according to the invention contains at least one antimicrobial active ingredient, preferably selected from the groups of alcohols, ames, aldehydes, antimicrobial acids or their salts, carboxylic acid esters, acid amides, phenols, phenol derivatives, diphenyls, diphenylalkanes, urea derivatives, oxygen Acetals and formals, nitrogen acetals and formals, benzamidines, isothiazoline, phthaiimide derivatives, pyidine derivatives, antimicrobial surface-active compounds guanidines, antimicrobial amphoteric compounds, chinos ne, 1,2-dibromo-2,4-dicyanobutane, iodo-2 -propynyl-butyl-carbamate, iodine, iodophores and other halogens or halogen compounds as well as peroxides or peroxo compounds, especially selected from ethanol, n-propanol, i-propanol, 1, 3-butanediol, phenoxyethanol, 1, 2- Propylene glycol, glycerin, undecylenic acid, citric acid, lactic acid, benzoic acid, salicylic acid, dihydracetic acid, o-phenylphenol, N-methylmorpholine-acetonitrile (MMA), 2-benzyl-4-chlorophenol, 2,2'-methylene-bis- (6-bromine -4-chlorophenol), 4,4'-dichloro-2'-hydroxydiphenyl ether (dichlosan), 2,4,4'-trichloro-2'-hydroxydiphenyl ether (trichlosan), chlorhexidine, N- (4-chlorophenyl) -N- (3,4-dichlorophenyl) urea, N, N '- (1, 10-decanediyldi-1-pyhdinyl-4-ylidene) bis (1-octanamine) dihydrochloride, N, N'-bis- (4-chlorophenyl) -3,12- diimino-2,4,11, 13-tetraaza-tetradecanediimidamide, glucoprotamines, antimicrobial surface-active quaternary compounds, guanidines including the bi- and polyguanidines, peroxo compounds, chlorine compounds, amphoterics and natural antimicrobial agents of vegetable origin (eg from spices or herbs) or animal origin, particularly preferably at least one antimicrobial surface-active quaternary compound, a perox overbinding, a halogenated xylene and cresol derivative, such as p-chloro-m-cresol or p-chloro-m-xylene, a natural antimicrobial agent of plant origin, a natural antimicrobial agent of animal origin and / or antimicrobial agent of microbial origin (so-called bacteriocins), extremely preferably at least one natural antimicrobial active ingredient of plant origin from the group, comprising caffeine, theobromine and theophylline and essential oils such as eugenol, thymol and geraniol, and / or at least one natural antimicrobial active ingredient of animal origin from the group, in order to containing enzymes such as protein from milk, lysozyme and lactoperoxidase, and / or at least one antimicrobial surface-active quaternary compound with an ammonium, sulfonium, phosphonium, iodonium or arsonium group, as described, for example, by KH Wallhäußer in "Practice of Sterilization, Disinfection - Preservation: germ identification - concerning iebshygiene "(5th Ed. - Stuttgart; New York: Thieme, 1995).

Suitable representatives from the group of guanidines, including biguanidines and polyguanidines, are, for example, 1,6-bis- (2-ethylhexyl-biguanido-hexane) dihydrochloride, 1,6-di- (N ₁ , N ₁ '-phenyldiguanido-N ₅ , N ₅ ') -hexane-tetrahydochloride, 1.eD ^' N _L NZ-phenyl-

N ^ N methyldiguanido-N ^ Ns ^ -hexane-dihydrochloride, 1, 6-di- (N ₁ , N ₁ '-chlorophenyldiguanido-N ₅ , N ₅ ') -hexane-dihydrochloride, 1, 6-di- (N ₁ , N ₁ '-2,6-dichlorophenyldiguanido-Ns.NsΗiexan-dihydrochloride, l .β-Di-fN _L N _ϊ ' -ß-Oo-methoxy-phenyl) -diguanido-N ₅ , N ₅ '] -hexane-dihydrochloride, 1, 6-di- (N ₁ , N ₁ '-alpha-methyl-ß-phenyldiguanido-N ₅ , N ₅ ') -hexane-dihydrochloride, 1, 6-di- (N ₁ , N ₁ '-p-nitrophenyldiguanido- N ₅ , N ₅ ') -hexane-dihydrochloride, ω: ω-di- (N ₁ , N ₁ ' -phenyldiguanido-N ₅ , N ₅ ') -di-n-propylether-dihydrochloride, ω: ω'-di - (N ₁ , N ₁ '-p-chlorophenyldiguanido-N ₅ , N ₅ ') -di-n-propylether-tetrahydrochloride, 1, 6-di- (N ₁ , N ₁ '-2,4-dichlorophenyldiguanido-N ₅ , N ₅ ') -hexanetrahydrochloride, 1, 6-di- (N ₁ , N ₁ ' -p-methylphenyldiguanido-N ₅ , N ₅ ') -hexane-dihydrochloride, 1.e-DKN ^ N ^ Aδ -trichlorophenyldiguanido-Ns ^ s ^ exan tetrahydrochloride, 1, 6-di-

[N ₁ , N ₁ '-alpha- (p-chlorophenyl) ethyldiguanido-N ₅ , N ₅ '] -hexane dihydrochloride, ω: ω-di-

(N ^ NV-p-chlorophenyldiguanido-Ns.N ^ -m-xylene-dihydrochloride, 1, 12-di- (N ₁ , N ₁ '-p-chlorophenyldiguanido-N ₅ , N ₅ ') -dodecane-dihydrochloride, I .IO-Di ^ N _L NV-phenyldiguanido-N ₅ , N ₅ ') -decane-tetrahydrochloride, 1,12-Di- (N ₁ , N ₁ ' -phenyldiguanido-N ₅ , N ₅ ') -dodecane tetrahydrochloride, 1, 6-di- (N ₁ , N ₁ '-o-chlorophenyldiguanido-N ₅ , N ₅ ') -hexane-dihydrochloride, 1, 6-di- (N ₁ , N ₁ '-o-chlorophenyldiguanido- N ₅ , N ₅ ^, ) -hexane-tetrahydrochloride, ethylene-bis- (1-tolylbiguanide), ethylene-bis- (p-tolylbiguanide), ethylene-bis- (3,5-dimethylphenylbiguanide), ethylene-bis- (p -tert-amylphenylbiguanide), ethylene-bis- (nonylphenylbiguanide), ethylene-bis- (phenylbiguanide), ethylene-bis- (N-butylphenylbiguanide), ethylene-bis- (2,5-diethoxyphenylbiguanide), ethylene-bis- (2,4-dimethylphenyl biguanide), ethylene bis (o-diphenyl biguanide), ethylene bis (mixed amyl naphthyl biguanide), N-butyl ethylene bis (phenyl biguanide), trimethylene bis (o-tolyl biguanide) ), N-butyl-trimethylene-bis-

(phenylbiguanide) and the corresponding salts such as acetates, gluconates, hydrochlorides, hydrobromides, citrates, bisulfites, fluorides, polymaieates, N-cocoalkylsarcosinates, phosphites, hypophosphites, perfluorooctanoates, silicates, sorbates, salicylates, maleatates, taracetate ethates, tartretates, tartrate ethates Iminodiacetates, cinnamates, thiocyanates, arginates, pyromellitates, tetracarboxybutyrates, benzoates, glutarates, monofluorophosphates, perfluoropropionates and any mixtures thereof.

The following antimicrobial active ingredients (see also International Cosmetic Ingredient Dictionary and Handbook - Seventh Edition (1997), publisher: The Cosmetic, Toiletry, and Fragrance Association (CTFA), 1101.) Are also suitable according to the International Nomenclature Cosmetic Engineer (INCI) nomenclature 17th Street, NW, Suite 300, Washington, DC 20036, USA): Alcohol, Benzalkonium Chloride, Benzethonium Chloride, Camellia Sinensis Leaf Extract, Candida Bombicola / Glucose / Methyl, Rapeseedate Ferment, Hydrogen Peroxide, Methylbenzethonium Chloride, Phenol, Pinus Pinaster Bark Extract, Pinus Tabulaeformis Bark Extract, Poloxamer 188, PVP-lodine, Rosmarinus Of ﬁ cinalis (Rosemary), Leaf Extract and Vitis Vinifera (Grape) Seed Extract. ΛZ Particularly preferably, the agent according to the invention contains at least one quaternary ammonium compound (QAV) with an antimicobial effect according to the general formula (R ² ) (R ³ ) (R ⁴ ) (R ⁵ ) N ⁺ X-, in which R ² to R ^{5 are the} same or different C ^ C ^ alkyl radicals, C ₇ -C ₂₈ aralkyl radicals or heterocyclic radicals, two or in the case of an aromatic integration as in pyridine see even three radicals together with the nitrogen atom the heterocycle, for. B. a pyridinium or imidazolinium compound form, represent and X ^"are halide ions, sulfate ions, hydroxide ions or similar anions. For an optimal antimicrobial effect, at least one of the radicals preferably has a chain length of 8 to 18, in particular 12 to 16, carbon atoms ,

QAV are by reacting tertiary amines with alkylating agents, such as. B. methyl chloride, benzyl chloride, dimethyl sulfate, dodecyl bromide, but also ethylene oxide. The alkylation of tertiary amines with a long alkyl radical and two methyl groups is particularly easy, and the quaternization of tertiary amines with two long radicals and one methyl group can also be carried out with the aid of methyl chloride under mild conditions. Amines which have three long alkyl radicals or hydroxy-substituted alkyl radicals are not very reactive and are preferably quaternized with dimethyl sulfate.

Suitable QAC are, for example, benzalkonium chloride (N-alkyl-N, N-dimethyl-benzylammonium chloride, CAS No. 8001-54-5), benzalkon B (m, p-dichlorobenzyldimethyl-C ₁₂ -alkylammonium chloride, CAS No. 58390 -78-6), benzoxonium chloride (benzyl-dodecyl-bis- (2-hydroxyethyl) -ammonium chloride), cetrimonium bromide (N-hexadecyl-

N, N-trimethyl-ammonium bromide, CAS No. 57-09-0), benzetonium chloride (N, N-dimethyl-N- [2- [2- [p- (1, 1, 3,3-tetramethylbutyl) phenoxy] ethoxy] ethyl] benzylammonium chloride, CAS No. 121 -54-0), dialkyldimethylammonium chlorides such as di-n-decyldimethylammonium chloride (CAS No. 7173-51-5-5), didecyldimethylammonium bromide (CAS No. 2390-68-3), dioctyldimethylammoniumchloric, 1- Cetylpyhdinium chloride (CAS No. 123-03-5) and thiazoline iodide (CAS No. 15764-48-1) and their mixtures. Particularly preferred QAV are the benzalkonium chlorides with C ₈ -C ₁₈ -alkyl radicals, in particular C ₁₂ -C ₁₄ -alkyl-benzyl-dimethylammonium chloride.

Benzalkonium halides and / or substituted Benzalkoniumhaiogenide are for example commercially available as Barquat ^® ex Lonza, Marquat® ^® ex Mason, Variquat ^® ex Witco / Sherex and Hyamine ^® ex Lonza and as Bardac ^® ex Lonza. More commercial 11 available antimicrobial agents are N- (3-chloroallyl) hexaminium chloride such as Dowicide ^® and Dowicil ^® ex Dow, benzethonium chloride such as Hyamine ^® 1622 ex Rohm & Haas, methylbenzethonium chloride such as Hyamine ^® 10X ex Rohm & Haas, cetylpyridinium chloride such as Cepacolchlorid ex Merrell Labs.

The content of antimicrobial active substance, in particular surface-active quaternary compound, is usually 0.1 to 10% by weight, preferably 0.2 to 5% by weight, in particular 0.5 to 3% by weight, particularly preferably 1 to 2 % By weight, for example 1.5% by weight.

Other surfactants

In addition to sugar surfactants, the agents according to the invention can contain one or more further nonionic and anionic, amphoteric or cationic surfactants or surfactant mixtures from one, more or all of these classes of surfactants, preferably one or more further nonionic surfactants. The compositions usually contain surfactants in a total amount, based on the composition, of 0.1 to 40% by weight, preferably 1 to 30% by weight, in particular 5 to 20% by weight, extremely preferably 10 to 15% by weight. -%, for example 12% by weight.

nonionic surfactants

In addition to the sugar surfactants, suitable nonionic surfactants are, for example, C ₈ -C ₂₂ alkyl alcohol polyglycol ethers and nitrogenous surfactants or also sulfosuccinic acid di-C _r C ₁₂ alkyl esters or mixtures thereof, preferably the first two, in particular C ₈ -C ₂₂ alkyl alcohol polyglycol ethers. In addition to the sugar surfactants, the compositions contain nonionic surfactants in amounts, based on the composition, of 0 to 30% by weight, preferably 0.1 to 20% by weight, in particular 0.5 to 10% by weight, most preferably 1 to 5% by weight, for example 2% by weight.

C ₈ -C ₂₂ alkyl alcohol polypropylene glycol / polyethylene glycol ethers are preferred known nonionic surfactants. They can be described by the formula II, R ⁶ O (CH ₂ CH (CH ₃ ) O) _p (CH ₂ CH ₂ O) _e H, in which R ^{6 represents} a linear or branched, aliphatic alkyl and / or alkenyl radical with 8 to 22 carbon atoms, p for 0 or numbers from 1 to 3 and e for numbers from 1 to 30, preferably 2 to 20. The C ₈ -C ₂₂ alkyl alcohol polyglycol ethers of the formula II can be obtained by addition of propylene oxide and / or ethylene oxide onto alkyl alcohols, preferably onto fatty alcohols. Typical examples are polyglycol ethers of the formula II in which R ^{6 represents} an alkyl radical having 8 to 18 carbon atoms, p represents 0 to 2 and e represents numbers from 2 to 20. Preferred representatives are, for example, C ₁₀ -C ₁₄ fatty alcohol + 1 PO + 6EO ether (p = 1, e = 6), C ₁₀ -C ₁₄ fatty alcohol + 1, 2PO + 6.4EO ether (p = 1, 2, e = 6.4), C ₁₂ -C ₁₈ fatty alcohol + 7EO ether (p = 0, e = 7), cetyl alcohol + 17EO ether (p = 0, e = 17) and oleyl alcohol + 17EO ether (p = 0, e = 17) and their mixtures, for example oleyl cetyl alcohol + 17EO ether, a mixture of cetyl alcohol + 17EO ether and oleyl alcohol + 17EO ether in a weight ratio of about 50 to 50, ie in one Range from 45 to 55 to 55 to 45. Other suitable representatives are the compounds mentioned in the International Cosmetic Ingredient Dictionary and Handbook - Seventh Edition (1997, ISBN 1-882621-20-4) of the CTFA (Cosmetic, Toiletry, and Fragrance Association) of the formula II, in particular the chemically classified as alkoxylated alcohols (Chemical Classes = Alkoxylated Alcohols) or the surfactants functioning as emulsifiers (Functions = Surfactants - Emulsifying Agents).

End-capped C ₈ -C ₁₈ alkyl alcohol polyglycol ethers can also be used, ie compounds in which the free OH group in the formula II is etherified. The end-capped C ₈ -C ₁₈ alkyl alcohol polyglycol ethers can be obtained by the relevant methods of preparative organic chemistry. C ₈ -C ₁₈ -Alkyl alcohol polyglycol ethers are preferably reacted with alkyl halides, in particular butyl or benzyl chloride, in the presence of bases. Typical examples are mixed ethers of the formula II in which R ^{6 is} an industrial fatty alcohol _residue , preferably C _{12 -C} 14 _cocoalkyl residue, p is 0 and e is 5 to 10, which are closed with a butyl group.

Nitrogen-containing surfactants may be included as further nonionic surfactants, e.g. B. fatty acid polyhydroxyamides, for example glucamides, and ethoxylates of alkylamines, vicinal diols and / or carboxamides which have alkyl groups with 10 to 22 carbon atoms, preferably 12 to 18 carbon atoms. The degree of ethoxylation of these compounds is generally between 1 and 20, preferably between 3 and 10. Ethanolamide derivatives of alkanoic acids with 8 to 22 C atoms, preferably 12 to 16 C atoms, are preferred. Particularly suitable compounds include lauic acid, myristic acid and palmitic acid monoethanolamides. anionic surfactants

Suitable anionic surfactants are the preferred C ₈ -C ₁₈ alkyl sulfates, C ₈ -C ₁₈ alkyl ether sulfates, ie the sulfation products of the alcohol ethers of the formula II, and / or C ₈ -C ₁₈ alkyl benzene sulfonates, in particular dodecylbenzenesulfonate, but also C ₈ -C ₁₈ alkanesulfonates, C ₈ -C ₁₈ α-olefin sulfonates, sulfonated C ₈ -C ₁₈ fatty acids, C ₈ -C ₂₂ carboxylic acid amide ether sulfates, sulfosuccinic acid mono-C 1-4 alkyl esters, C ₈ -C ₁₈ -Alkylpolyglykolethercar- boxylate, C ₈ -C ₁₈ -N-Acyltaurιde, C ₈ -C ₁₈ -N-Sarkosιnate and C ₈ -C ₁₈ -Alkylιsethιonate or mixtures thereof They are in the form of their alkali metal and alkaline earth metal salts, especially sodium , Potassium and magnesium salts, as well as ammonium and mono-, di-, Tn- or tetraalkylammonium salts and, in the case of sulfonates, also in the form of their corresponding acid, for example dodecylbenzenesulfonic acid. When using sulfonic acid, this is usually used in situ with one or several corresponding bases, e.g. alkahene neutralized tall and alkaline earth metal hydroxides, in particular sodium, potassium and magnesium hydroxide, and ammonia or mono-, di-, Tn- or tetraalkylaamine, to the aforementioned salts

The agents can contain anionic surfactants in amounts, based on the composition, of 0 to 10% by weight, preferably 0 to 5% by weight, in particular 0 to 1% by weight, most preferably 0 to 0.1% by weight

Because of their foam-suppressing properties, the agents according to the invention can also contain soaps, ie alkali metal or ammonium salts of saturated or unsaturated C ₆ -C ₂₂ fatty acids. The soaps can be present in an amount of up to 5% by weight, preferably 1% by weight, in particular 0%. 1% by weight

However, the agent preferably contains as little anionic surfactants as possible, including soaps, and, in a particularly preferred embodiment of the invention, is completely free of anionic surfactants, including soaps, since these are often more or less incompatible with the antimicrobial quaternary compounds the person skilled in the art, of course, that he must verify the compatibility of the anionic surfactants with the antimicrobial active substances with regard to the germ-reducing effect amphoteric

Suitable amphoteric surfactants are, for example, betaines of the formula (R ⁷ ) (R ⁸ ) (R ⁹ ) N ⁺ CH ₂ COO ^~ , in which R ^{7 is} an alkyl radical with 8 to 25, preferably 10 to 21, carbon which is optionally interrupted by heteroatoms or heteroatom groups - fatomen and R ⁸ and R ^{9 are} identical or different alkyl radicals having 1 to 3 carbon atoms, in particular C ₁₀ -C ₁₈ -alkyldimethylcarboxymethylbetaine and C -C ₁₇ -alkylamidopropyldimethylcarboxymethylbetaine. The compositions contain amphoteric surfactants in amounts, based on the composition, of 0 to 15% by weight, preferably 0.01 to 10% by weight, in particular 0.1 to 5% by weight.

Builder

Furthermore, the agent according to the invention preferably contains one or more further builders, in particular to improve the cleaning performance. Suitable builders are, for example, alkali metal citrates, gluconates, nitrilotriacetates, carbonates and bicarbonates, in particular sodium citrate, gluconate and nitrilotriacetate as well as sodium and potassium arbonate and bicarbonate, and also alkali metal and alkaline earth metal hydroxides, in particular sodium Potassium hydroxide, ammonia and amines, especially mono- and thethanolamine, or mixtures thereof. These also include the salts of glutaric acid, succinic acid, adipic acid, tartaric acid and benzene hexacarboxylic acid as well as aminotrimethylenephosphonic acid, hydroxyethane-1, 1-diphosphonic acid, 1-aminoethane-1, 1-diphosphonic acid, ethylenediaminetetra (methylenephonic acid), diethylenetriaminophonic acid (methylenediaminephosphonic acid) ), 2-phosphonobutane-1, 2,4-tricarboxylic acid, phosphonates and phosphates, for example the sodium salts of methane diphosphonic acid, the pentasodium triphosphate known as sodium tripolyphosphate or sodium hexametaphosphate such as a mixture of condensed orthophosphates with an average degree of condensation of about 12. Particularly preferred builders are the citrates, in particular sodium citrate, and the aminotrimethylenephosphonic acid and mixtures thereof, in which the weight ratio of citrate to aminotrimethylenephosphonic acid is preferably 1 to 5 to 10 to 1, in particular 1 to 1 to 5 to 1, particularly preferably 2 to 1 to 4 1, for example about 3 z u 1, e.g. B. 2.8 to 1 or 2.9 to 1. In a further preferred builder combination, the mixture of citrate, in particular sodium citrate, and aminotrimethylenephosphonic acid described above is used together with carbonate, in particular sodium carbonate, the weight ratio of carbonate to citrate is preferably 1 to 10 to 10 to 1, in particular 1 to 5 to 1 to 1, for example 1 to 4.

In the context of the present invention, the citrates - unless expressly stated otherwise - are the salts of the triple deprotonated citric acid. However, the mono- and dihydrogen citrates can also be used according to the invention.

The compositions contain builders in amounts, based on the composition, of usually 0.1 to 20% by weight, preferably 0.5 to 12% by weight, in particular 1 to 8% by weight, extremely preferably 1.5 to 5% by weight, for example 2.7, 3 or 3.2% by weight. The salts mentioned can also be used in the form of their corresponding acids or bases, which are then partially or completely neutralized depending on the pH to be set. Likewise, the acids mentioned can be in the form of their salts, preferably their alkali metal, alkaline earth metal, ammonium and mono-, di- or trialkanolammonium salts, in particular mono-, di- or triethanolammonium salts, or mixtures thereof, in particular their sodium salts. are used, for example citric acid in the form of its monohydrate citric acid 1H ₂ O instead of citrate. The complexing builders also serve in particular to ensure a clear application solution when using the agents with hard water.

Perfume

In a preferred embodiment of the invention, the compositions contain one or more perfumes, preferably in an amount of 0.1 to 5, in particular 0.2 to 3, particularly preferably 0.4 to 2, extremely preferably 0.7 to 1, 5% by weight, for example 1% by weight. In addition to perfumes and perfume oils in the narrower sense, perfume in this context should also be understood to mean the fragrance or fragrance in general.

Here, the sugar surfactants, in particular the alkyl polyglycosides, are able to solubilize the perfume according to the use or agent according to the invention, so that only small amounts of solvent, solubilizer and / or hydrotrope are required or, in a preferred embodiment of the invention, even entirely on solvent, solubilizer and / or hydrotrope is dispensed with.

The fifth object of the invention is therefore also the use of one or more sugar surfactants, in particular one or more alkyl polyglycosides, for solubilization of one or more perfumes in an aqueous surfactant-containing agent, preferably an agent according to the invention

PH value

The pH of the agents according to the invention can be varied over a wide range, but a range from 3 to 12, in particular 5 to 10.5, is preferred

In a preferred embodiment of the invention, the agents are alkaline with a pH of 8 to 12, preferably 8.5 to 11, 5, in particular 9 to 11, most preferably 9.3 to 10.5, for example 9.5 or 10, since the antimicrobial effect of the quaternary compounds generally increases with increasing pH, while in the acidic range below a pH of 3 they are sometimes completely absent

Suitable pH regulators are on the one hand mineral acids, for example hydrochloric acid, but especially citric acid, and on the other hand the aforementioned alkaline builders, for example sodium hydroxide

To stabilize or buffer the pH, the agent according to the invention can contain appropriate amounts of buffer substances, for example suitable builders such as soda and / or sodium bicarbonate in an alkaline embodiment

Auxiliaries and additives

In addition to the components mentioned, the agents according to the invention can contain further auxiliaries and additives, as are customary in such agents. These include, in particular, soil-release agents, solvents (for example ethanol, isopropanol, glycol ether), solubilizers, hydrotropes (for example cumene sulfonate, Octyl sulfate, butyl glucoside, butyl glycol), cleaning boosters, antistatic agents, preservatives, bleaching systems, enzyme dyes and opacifying agents or skin protection agents, as described in EP-A-522 556. The amount of such additives is usually not more than 12% by weight Cleaning agents The lower limit of use depends on the type of additive and can be up to 0.001% by weight and below for dyes, for example. The amount of auxiliaries is preferably between 0.01 and 7% by weight, in particular 0.1 and 4% by weight. % manufacturing

The agents according to the invention can be prepared by mixing them directly from their raw materials, then mixing them and then standing the agent until there are no bubbles. In this case, water is preferably introduced into which the other components, preferably first the quaternary compound, are stirred in, dyes and perfumes preferably being added last.

application

The agents according to the invention are particularly suitable for use in a method for cleaning and / or disinfecting or sanitizing hard surfaces, in particular in the kitchen and sanitary area, in which the agent is applied to a hard surface in undiluted form or in the form of a preparation diluted with water and the surface is then cleaned in the usual manner.

If the agent is diluted with water, an application concentration of the antimicrobial active ingredient is from 0.001 to less than 5% by weight, preferably from 0.001 to 1% by weight, in particular from 0.001 to 0.5% by weight, particularly preferably from 0.001 to 0.1% by weight, most preferably from 0.001 to 0.05% by weight, is advantageous.

B e i s p i e l e

The compositions E1 to E7 according to the invention or according to the invention were prepared as described above, their pH was adjusted to 9.5 and their viscosity, cold clouding and clear point were determined (Table 1).

The viscosity was determined at 20 ° C according to Brookfield (Brookfield DV // + viscometer; spindle 31; shear rate 30 min ^'1 ).

The cold cloud point was determined by cooling a sample in the cryostat with a cooling rate of 0.2 ° C. min ^"1 , the cold cloud point being the temperature at which a slight cloudiness was first detected. After the sample was completely cloudy, a Heating rate of 0.2 ° C. min ^1. The temperature at which the sample was completely clear for the first time is given as the clear point.

Table 1

Composition [% by weight] E1 E2 E3 E4 E5 E6 E7

C ₈ . _10- alkyl-1,5-glucoside 10 5 4 3 2.5 2 -

C _12-16 alkyl-1,4-glucoside - 5 6 7 7.5 8 10

Oleyicetyl alcohol + 17EO ether 2 2 2 2 2 2 2

C ₁₂ . _14- Alkylbenzyl-dimethyl-1, 5 1, 5 1, 5 1, 5 1, 5 1, 5 1, 5 ammonium chloride

Trinatri around citrate 2 2 2 2 2 2 2

Aminotrimethylenephosphonic acid 0.7 0.7 0.7 0.7 0.7 0.7 0.7

Perfume 1 1 1 1 1 1 1

Dyes <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Water ad 100 ad 100 ad 100 ad 100 ad 100 ad 100 ad 100

Viscosity [mPa-s] 2 18 175 72 170 260 250

Clear point [° C] 0 0 10 0 0.5 0.5 11

Cloud point [° C] -4 -8 0 0.5 -9.5 -0.5 -1.5

The compositions are clear solutions which, even when diluted with water, show no cloudiness and, when used, all have a high cleaning performance in undiluted and diluted form. The antimicrobial effect of the agents was determined using a quantitative suspension test based on the European standard EN 1040 (test organisms: Staphylococcus aereus, Pseudomonas aeruginosa, Escherischia coli and Salmonelle enteritidis (practice isolate); test concentration: 80% in distilled water; test temperature: room temperature; exposure time : 15 minutes), which all sample compositions passed.

The example compositions illustrate how the viscosity can only be achieved with a given alkyl polyglycoside content of 10% by weight by variation of the APG component according to the invention, i. H. by selecting the APG (E1, E7) or by varying the APG combination (E2 to E6), it can be set in a wide range from water-thin (E1) to a thickening of 260 mPa-s (E6).

In addition, an optimization of the cold stability for a certain viscosity is made possible. The compositions E3 and E5 and E6 and E7 each have almost identical viscosities, but the cold stability is very different and is significantly better in the case of E5 and E6.

Claims

31 P a te n ta n s p r ü c h e

Use of one or more sugar surfactants to adjust the viscosity of an aqueous surfactant

Use according to claim 1, characterized in that at least one sugar surfactant, preferably each sugar surfactant, is an alkyl polyglycoside

Use according to claim 1 or 2, characterized in that a combination of at least two different sugar surfactants, preferably two different alkyl polyglycosides, in particular a C _{8 10} - and a C _{12 14} - alkyl polyglucoside, is used

Use according to one of claims 1 to 3, characterized in that a viscosity of 10 to 1000 mPa s, preferably 50 to 500 mPa s, in particular 80 to 300 mPa s, particularly preferably 100 to 200 mPa s, is set

Use according to one of claims 1 to 4, characterized in that the water-containing surfactant contains at least one antimicrobial active substance, preferably an antimicrobial surface-active quaternary compound, in particular with an ammonium, sulfonium, phosphonium, iodomum or arsonium group , particularly preferably a quaternary ammonium compound

Use according to one of claims 1 to 5, characterized in that the water-containing surfactant is an agent for cleaning and / or disinfection or

Sanitation, preferably for cleaning and / or disinfection or sanitation of hard surfaces, in particular for cleaning and / or disinfection or sanitation of hard surfaces in the cake and sanitary area

Thickened water-containing surfactant, suitable for cleaning and / or disinfection or sanitation of hard surfaces, containing one or more sugar surfactants and at least one antimicrobial agent

Agent according to the preceding claim, characterized in that it is a surface-active quaternary compound, preferably with an ammonium, Contains sulfonium, phosphonium, iodonium or arsonium group, especially a quaternary ammonium compound.

9. Agent according to one of the preceding claims, characterized in that at least one sugar surfactant, preferably each sugar surfactant, is an alkyl polyglycoside.

10. A composition according to any one of the preceding agent claims, characterized in that it contains a combination of at least two different sugar surfactants, preferably two different alkyl polyglycosides, in particular a C. ₈ ₁₀ - and a C _12-14 alkyl polyglucoside.

11. Agent according to one of the preceding claims, characterized in that its viscosity is from 10 to 1000 mPa-s, preferably 50 to 500 mPa-s, in particular 80 to 300 mPa-s, particularly preferably 100 to 200 mPa-s.

12. Composition according to one of the preceding claims, characterized in that it contains one or more further surfactants, preferably one or more further nonionic surfactants, in particular C ₈ -C ₂₂ alkyl alcohol polyglycol ether.

13. Agent according to one of the preceding claims, characterized in that it is free of anionic surfactants including soaps.

14. Composition according to one of the preceding claims, characterized in that it contains one or more builders, preferably citrates, in particular sodium citrate, and the aminotrimethylenephosphonic acid and mixtures thereof.

15. Composition according to one of the preceding claims, characterized in that it contains one or more perfumes, preferably without solvents, solubilizers and / or hydrotropes.

16. Agent according to one of the preceding agent claims, characterized in that it has a pH of 3 to 12, in particular 9 to 11.

17. Agent according to one of the preceding claims, characterized in that it has a clear point of not higher than 18 ° C, preferably not higher than 15 ° C, in particular not higher than 11 ° C, and / or a cold cloud point of SA not higher than 18 ° C, preferably not high, in particular not higher ^C 5 C, having as 10 ° C,

Use of an agent according to one of the preceding agent claims for cleaning and / or disinfection or sanitation, preferably for cleaning and / or disinfection or sanitation of hard surfaces, in particular for cleaning and / or disinfection or sanitation of hard surfaces in the cake and sanitary area

Use of one or more sugar surfactants for solubilizing one or more perfumes in an aqueous surfactant

Use of one or more sugar surfactants to control the cold turbidity and / or clear point of an aqueous surfactant

Use according to the preceding claim, characterized in that a clear point of not higher than 18 ° C, preferably not higher than 15 ° C, in particular not higher than 11 ° C, and / or a cold turbidity point not higher than 18 ° C, preferably is not controlled higher than 10 ° C, in particular not higher than 5 ° C

A process for producing a thickened aqueous surfactant-containing agent, characterized in that the viscosity of the agent is adjusted by adding one or more sugar surfactants