DE19813042A1 - Aqueous washing-up liquid mild to skin - Google Patents

Abstract

An aqueous washing-up liquid contains a fatty acid oligoalkylene glycol ester sulfate and an alkyl sulfate and/or alkyl ether sulfate. An aqueous washing-up liquid contains: (A) a fatty acid oligoalkylene glycol ester sulfate of formula R<1>COO(R<2>O)nSO3M (I); and (B) an alkyl sulfate and/or alkyl ether sulfate of formula R<3>O(CH2CH2O)mSO3M' (II). M = a cation, especially ammonium; R<1>CO = aliphatic, optionally unsaturated 6-22 C acyl; R<2> = alkylene, especially -CH2CH2-, -CH(CH3)CH2- or -CH2CH(CH3)- or (R<2>O)n = (EO)u(PO)v(EO)w; n = 0.5-5; u, w = 0-5; v = 0.1-5; (u+w) = above 0; and (u+v+w) = 0.5-5; R<3> = optionally unsaturated 8-22 C alkyl; m = 0-10; PO = propylene oxide; EO = ethylene oxide; and M' = alkali(ne earth) cation or ammonium.

Description

The present invention relates to skin-friendly aqueous hand Dishwasher detergent with fatty acid oligoalkylene glycol ester sulfates in Combination with alkyl sulfates and / or alkyl ether sulfates with high Cleaning power and good emulsifying power.

Liquid cleaning agents usually consist of aqueous solutions from synthetic anionic and / or nonionic surfactants and additives. They become harder to clean especially Surfaces, for example of glass, ceramic materials, art fabrics, lacquered and polished surfaces. A wich The main area of application for liquid cleaning agents is manu All dishes and cookware are rinsed. The dishes are cleaned Licher at slightly elevated temperatures of about 35 to 45 ° C. performed in very dilute fleets. It is from consumption the cleaning power of an agent in general than all the more better judged, the stronger and the longer the cleaning fleet foams. When removing in particular grease and oil Soiling is dispersed or emulsified in the washing liquor gier, the cleaning ability of the fleet to the user The longer the emulsion is stable, the longer it remains. We contact of the hands with the cleaning solution over a long period There is also a longer period when washing dishes manually  Skin friendliness of the agent of particular importance. From these The expert provides reasons for the selection of the components and the Composition of an agent for manual cleaning of Ge different considerations than with liquid cleaning agents for other hard surfaces.

It is well known that fatty alkyl sulfates, i.e. H. sulfated Fatty alcohols with 6 to 22 carbon atoms, preferably 12 to 16 carbon atoms men, and so-called fatty alkyl ether sulfates, that is, salts of sul enriched adducts of about 1 to 10 times ethylene oxide Fatty alcohols with 6 to 22, preferably 12 to 16, carbon atoms a good foaming and cleaning power in the aliphatic rest to sit. The commercially available, manual dishwashing detergents therefore generally represent aqueous solutions of such alkyl sulfates and / or alkyl ether sulfates in combination with other surfactants, in particular alkylbenzenesulfonates or secondary alkanesulfonates, as well as solubilizers, colors and fragrances. For stabili tion of the surfactant systems and the improvement of manageability for the user, the surfactant solutions are also usually used organic and / or organic thickeners added.

From the publication Presentation and properties of fatty acid polyglycol ester sulfates (K. Engel, W. Ruback fats, soaps and Paint 1986, 88, 20-25) is the potentially high skin friendliness of these compounds are known and are dishwashing means known to be a combination of fatty acid oligoethylene glycol ester sulfates coconut fatty acid + 4EO ester sulfate with linear Al kylbenzene or paraffin sulfonate in a ratio of 2 to 8 ent hold. Your cleaning ability is that of the corresponding agents with a fatty alcohol ether sulfate instead of coconut fatty acid + 4EO- estersulfates, however, only equal or even inferior.

The object of the present invention was to make skin-friendly aqueous To provide hand dishwashing detergent, which is by ei  ne high cleaning performance and good emulsifying power to draw.

This object was achieved according to the invention by aqueous hand dishes detergent based on a surfactant combination of fatty acid oligoalkylene glycol ester sulfates with alkyl sulfates and / or alkyl dissolved ether sulfates.

The subject of the present application are therefore aqueous dishwashing detergents containing

• A) fatty acid oligoalkylene glycol ester sulfates of the formula I,
  R ¹ COO (R ² O) _n SO ₃ M (I)
  in which M stands for a cation, in particular an ammonium ion, and R ¹ CO for a linear or branched, aliphatic, saturated or unsaturated acyl radical having 6 to 22 carbon atoms, and R ² in (R ² O) _n for an alkylene radical, in particular CH ₂ CH ₂ or CH (CH ₃ ) CH ₂ or CH ₂ CH (CH ₃ ), where n then denotes numbers from 0.5 to 5, or (R ² O) _{n is} a unit of the type (EO) _u ( PO) _v (EO) _w represents, where E is CH ₂ CH ₂ and P is CH (CH ₃ ) CH ₂ or CH ₂ CH (CH ₃ ) and 0 ≦ u ≦ 5, 0.1 ≦ v ≦ 5 and 0 ≦ w ≦ 5 and u + w <0 and 0.5 ≦ (u + v + w) ≦ 5, and
• B) alkyl sulfates and / or alkyl ether sulfates of the formula II,
  R ³ O (CH ₂ CH ₂ O) _m SO ₃ M '(II)
  in which R ^{3 stands} for a saturated or unsaturated C ₈ -C ₂₂ alkyl group, in for numbers from 0 to 10 and M 'for an alkali metal or an alkaline earth metal cation or an ammonium ion.

The hand dishwashing detergents according to the invention are not distinguished only through their pronounced skin friendliness and their special high cleaning performance, but also point out also a very good emulsifying power. An increasing proportion of  Fatty acid oligoalkylene glycol ester sulfate causes an increasing Emulsion stability, with a weight ratio of A to B a surprisingly high increase in stability from 1 to 1 is (see examples). In a preferred embodiment the agents accordingly contain fatty acid oligoalkylene glycol ester sulfates and alkyl sulfates / alkyl ether sulfates in one Ge weight ratio A to B of at least 1 to 1.

It was completely surprising to find that the inventive Hand dishwashing detergent based on the surfactant combination of fatty acid reoligoalkylene glycol ester sulfates with alkyl sulfates and / or alkyl ether sulfates compared to comparable agents with each because only one of these two surfactant components is synergistic Show superior cleaning performance.

Another advantage of the hand dishwashing detergent according to the invention based on the surfactant combination of fatty acid oligoalkylene glycol ester sulfates with alkyl sulfates and / or alkyl ether sulfates in the possibility of contributing solely through the weight ratio of these the surfactant components without significant impairment of the cleanliness a certain viscosity within a wide range to be able to set rich.

The fatty acid oligoalkylene glycol ester sulfates (FSES) of the formula I contained according to the invention are known compounds which are distinguished by excellent skin tolerance and by sulfation of fatty acid oligoalkylene glycol esters of the formula R ¹ COO (R ² O) _n H, in which R ¹ , R ² and n or . (R ² O) _{n have} the same meaning as in formula I, are accessible (cf. K. Engel, W. Ruback Fette, Seifen und Anstrichmittel 1986, 88, 20-25).

As described in the unpublished German patent application P 197 36 906.5, the sulfation is preferably carried out with sulfur trioxide in a molar ratio of 1 to 1 to 1 to 1.3, in particular 1 to 1.05 to 1 to 1.1, on a continuous basis Falling film reactor working preferably at temperatures of at least 5 to 10 ° C above the melting point of the fatty acid oligoalkylene glycol ester, followed by neutralization of the acidic ester obtained with alkali metal hydroxides, alkaline earth metal hydroxides, ammonia and / or water-soluble organic amines, preferably NaOH, KOH and / or NH ₃ , in the form of their 20 to 50% by weight aqueous solutions, the pH in a range from 5 to 9, preferably 6 to 8, and the temperature preferably between 10 and 40 ° C., in particular 20 and 35 ° C. is held.

The fatty acid oligoalkylene glycol used in the sulfation esters are, for example, according to the above application P 197 36 906.5 by basic homogeneously catalyzed addition of ethylene oxide and / or propylene oxide can be produced on fatty acids. By be there written use of amines such as alkanolamines, preferably Mo noethanolamine or diethanolamine, especially triethanolamine, in Amounts, based on the amount of fatty acids, of 0.1 to 5% by weight, preferably 0.5 to 1.5 wt .-%, it is now as a catalyst also possible, selectively low alkoxylated, especially low ethoxylated products with narrow homolog distribution and low To get by-product share. The alkoxylation of fatty acids with 0.5 to 5, preferably 1 to 2 equivalents, based on the Amounts of substance, ethylene oxide, propylene oxide or an ethylene oxide / propylene oxide mixture can in a known manner at Tem temperatures from 80 to 180 ° C, preferably 100 to 120 ° C, under au togen pressure of 1 to 5 bar, preferably 2 to 3 bar. FSES with conventional as well as are suitable according to the invention preferably with a narrow homolog distribution.

According to the invention, the FSES are sulfates of alkoxylated aliphatic carboxylic acids of the formula R ¹ COOH, in which R ¹ CO is an aliphatic, linear or branched acyl radical having 6 to 22, preferably 12 to 18 carbon atoms and 0, 1, 2 or 3 Double bonds stands. Typical examples are the oligoalkylene ester sulfates of caproic acid, caprylic acid, 2-ethylhexanoic acid, calcium prinic acid, lauric acid, isotridecanoic acid, myristic acid, palmitic acid, palmoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, arenoleic acid, arenoleic acid, arenoleic acid, elaoleolic acid, Behenic acid and erucic acid, and of their technical mixtures, which, for. B. in the pressure splitting of natural fats and oils. Technical fatty acids with 12 to 18 carbon atoms such as coconut, palm, palm kernel or tallow fatty acid are preferred.

The FSES according to the invention can, if appropriate, be producible thing - to a lesser extent glycol mono- and glycol disulfates, Fatty acid soaps, unsulfated parts and / or inorganic sul fate included.

The sulfates of the formula I with an average degree of alkoxylation n or (u + v + w) of 0.7 to 3, preferably 0.9 to 2 are preferred according to the invention. The sulfates of the propoxylated and in particular the ethoxylated carboxylic acids are particularly preferred or their ammonium salts, especially those of lauric acid reoligoalkylene glycol ester sulfates, most preferably the ammonium salt of lauric acid + 1EO-ester sulfate. Other cations M according to the invention (formula I) are alkali and alkaline earth metal cations, in particular magnesium cations (Mg ²⁺ ).

In a preferred embodiment of the invention contains the hand dishwashing detergent 1 to 70 wt .-%, in particular 3 to 50% by weight, most preferably 6 to 30% by weight, of fatty acid oligo alkylene glycol ester sulfates.

Furthermore, the agents according to the invention necessarily contain C ₈ -C ₂₂ -alkyl sulfates or C ₈ -C ₂₂ -alkyl ether sulfates according to formula II or mixtures thereof, amounts usually based on the composition being from 0.1 to 40% by weight. %, preferably 0.1 to 20% by weight, in particular 0.5 to 12% by weight, most preferably 1 to 8% by weight. The C ₈ -C ₂₂ alkyl ether sulfates are preferred.

These substances are also known chemical compounds which can be obtained by sulfating, optionally ethoxylated, C ₈ -C ₂₂ alcohols. Also C ₈ -C ₂₂ alkyl ether sulfates with narrowed homolog distribution (NRE = narrow range ethoxylates), as described, for example, in international patent application WO 91/05764 and in the review by DL Smith (J. Am. Oil. Chem. Soc. 1991, 68, 629) can be used.

Typical C ₈ -C ₂₂ alkyl ether sulfates are the sulfation products of adducts of 0.5 to 10 moles of ethylene oxide (conventional or narrowed homolog distribution) with 1 mole of caprylic alcohol, capric alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, palmole yl alcohol, stearyl alcohol, oleyl alcohol, Elaidyl alcohol, petro selinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol and erucyl alcohol as well as their technical mixtures or also with 1 mol of a petrochemical alcohol such as the commercially available C _12/13 oxo alcohols Neodol 23® or Liai 123®. Sulfates of adducts of 1 to 7 moles of ethylene oxide with saturated coconut oil alcohols are preferred in the form of their sodium, potassium and / or magnesium salts and ammonium salts, such as monoisopropanolammonium salts. For example, alkyl ether sulfates can be used, which are derived from corresponding fatty alcohol polyglycol ethers, which in turn have been produced in the presence of calcined or, in particular, hydrophobized hydrocalcite and therefore have a particularly narrow homolog distribution.

In a preferred embodiment of the invention there are fatty acids reoligoalkylene glycol ester sulfate (s) (A) and the sum of alkyl sul fat (s) and alkyl ether sulfate (s) (B) in a weight ratio A to B in the range of 4 to 1 to 1 to 4, especially 3 to 1 up to 1 to 3, most preferably from 2 to 1 to 1 to 2.

As further anionic surfactants, the agents according to the invention can be C ₈ -C ₂₂ carboxamide ether sulfates of the formula R-CO-NH (CH ₂ CH ₂ O) _j -SO ₃ X, in which R is a saturated or unsaturated C ₈ -C ₂₂ alkyl group, j are numbers from 1 to 10 and X is an alkali metal, alkaline earth metal or quaternary ammonium ion.

C ₈ -C ₂₂ carboxamide amide sulfates are known anionic ten-side, which have a pronounced foaming power and low sensitivity to hardness (cf. A. Reng Parf. U. Kosmetik 1980, 61, 87-97). They can be produced by processes known from the prior art (cf. J. Falbe Surfactants in Consumer Products 1987, Springer Verlag, p. 93 ff.).

Typical examples of C ₈ -C ₂₂ carboxamide amide sulfates are the sulfated adducts of 1 to 10 moles of ethylene oxide (conventional or narrow homolog distribution) with 1 mole of carboxylic acid alkanolamide, such as. B. the amide of caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, lininoic acid, arachic acid, gadoleic acid, behenic acid and erucic acid. As is common in fat chemistry, the fatty acid component of the amides can also be derived from technical fatty acid cuts, such as those that occur in the pressure splitting of natural fats and oils, for example palm oil, palm kernel oil, coconut oil, beet oil or beef tallow. Preferred feedstocks are the carboxamide ether sulfates of coconut fatty acid.

The C ₈ -C ₂₂ -carboxamide sulfates can be used in the hand dishwashing detergents according to the invention in amounts of 0.01 to 60% by weight, based on the finished agent, preferably 0.1 to 40% by weight, in particular 0.2 up to 25% by weight, most preferably 0.5 to 15% by weight.

As further anionic surfactants, e.g. B. n-alkylbenzenesulfonates with 9th up to 16 carbon atoms in the alkyl radical, alkanesulfonates with 10 to 20 Carbon atoms in the alkyl radical and / or olefin sulfonates with 12 to 16 carbon atoms in the alkyl radical in the surfactant according to the invention solutions are included.

Soaps, ie alkali or ammonium salts of saturated or unsaturated C ₈ -C ₂₂ fatty acids, are preferably not included in the surfactant combinations according to the invention because of their foam-suppressing properties.

The feature "preferably not included" is intended to mean that very small amounts of soap of up to 2% by weight, based on the entire means, can still be tolerated within the meaning of the invention nen.

The preferred nonionic surfactants are alkyl polyglycosides (APG) of the formula III,

R ⁴ O [G] _x (III)

in which R ^{4 is} a linear or branched, saturated or unsaturated alkyl radical having 8 to 22 carbon atoms, [G] is a glycosidically linked sugar radical and x is a number from 1 to 10.

APG are non-ionic surfactants and are known substances that according to the relevant procedures of preparative organic Che can be preserved.

The index number x in the general formula III gives the oligome degree of risk (DP degree), d. H. the distribution of mono and oli goglycosides, and stands for a number between 1 and 10. While x must always be an integer in a given connection and here especially the values x = 1 to 6 can be the value x for a certain alkylglycoside an analytically determined calculation size, which is usually a fractional number. Preferential alkyl glycosides with a medium oligomer are wise Degree of fixation x from 1.1 to 3.0. From application From an industrial point of view, those alkyl glycosides are preferred whose oli Degree of gomerization is less than 1.7 and in particular between 1.2 and 1.6. As glycosidic sugars are preferred Glucose and xylose used.  

The agents according to the invention preferably contain APG in quantities from 0.1 to 20% by weight, in particular 0.5 to 10% by weight, extremely be preferably 1 to 5 wt .-%, and / or in a proportion to Ge total amount of anionic surfactant from 1: 8 to 1: 4, in particular 1: 7 to 1: 5.

The alkyl or alkenyl radical R ⁴ (formula III) can be derived from primary alcohols having 8 to 18, preferably 8 to 14, carbon atoms. Typical examples are capronic alcohol, caprylic alcohol, cainal alcohol and undecyl alcohol and their technical mixtures, such as those obtained in the course of the hydrogenation of technical fatty acid methyl esters or in the course of the hydrogenation of aldehydes from ROELEN's oxosynthesis.

However, the alkyl or alkenyl radical R ⁴ 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, Gado leyl alcohol, behenyl alcohol, erucyl alcohol and their technical mixtures should also be mentioned.

Further nonionic surfactants which can be used are C ₈ -C ₁₈ alcohol alkoxylates of the formula R'O- (CH ₂ CH ₂ O) _i -H, where R 'is a saturated or unsaturated C ₈ -C ₁₈ alkyl group and i is Numbers from 1 to 20 stands.

The fatty alcohol alkoxylates are known compounds which are characterized by Al koxylation of the fatty alcohols can be obtained. The fat alcohol alkoxylates in an amount of 0.1 to 15 wt .-% in agents according to the invention may be included.

As further nonionic surfactants, fatty acid alkanolamides can be used, e.g. B. C _10/22 fatty acid monoethanolamide or plant approximately 4 to 20, preferably from 4 to 10 mol of C _2-3 alkylene oxide, preferably ethylene oxide to C ₁₀ -C ₂₀ , preferably C ₁₂ -C ₁₈ alkanols, but also the addition products of ethylene oxide onto propylene glycols, which are known under the name Pluronics®, and addition products of 1 to 7 mol ethylene oxide onto C ₁₂ -C ₁₈ alkanols reacted with 1 to 5 mol propylene oxide are suitable. Fatty alkyl amine oxides are also suitable.

Fatty acid N-alkylpolyhydroxyalkylamides can also be used as nonio African surfactants are used, which are also known substances, usually by reductive amine tion of a reducing sugar with ammonia, an alkylamine or an alkanolamine and subsequent acylation with a fatty acid, a fatty acid alkyl ester or a fatty acid chloride that can. Regarding the processes for their manufacture, be on U.S. Patent Nos. 1,985,424, 2,016,962 and 2,703,798 and international patent application WO 92/06984. Egg An overview of this topic by H. Kelkenberg can be found in Tens. Surf. Det. 1988, 25, 8. Preferred fatty acid N- alkylpolyhydroxyalkylamides are the fatty acid N-alkylglykamides which is different from reducing sugars with 5 or 6 carbon a toms, in particular derived from glucose.

Betaine compounds of the formula IV,

(R ⁵ ) (R ⁶ ) (R ⁷ ) N⁺-CH ₂ COO⁻ (IV)

in which R ^{5 is} an alkyl radical with 8 to 25, preferably 10 to 21 carbon atoms and R ⁶ and R ^{7 which are the} same or different alkyl radicals with 1 to 3 carbon atoms and which may be interrupted by hetero atoms or hetero atom groups. Preferred are C ₁₀ -C ₁₈ alkyl dimethyl carboxymethyl betaine and C ₁₁ -C ₁₇ alkyl amidopropyl dimethyl carboxymethyl betaine.

The betaine compounds of formula IV are preferably in one Amount of 0.1 to 14 wt .-%, in particular 1 to 8 wt .-% in the inventive hand dishwashing detergent composition.  

The total surfactant content is preferably in the inventive Average over 15 wt .-%, based on the total average, however not more than 75% by weight, in particular not more than 50% by weight.

The solvents to be added if necessary are preferably low molecular weight alkanols with 1 to 4 carbon atoms in the molecule, especially around ethanol and isopropanol. As other solubilizers, for example for dyes and perfume oils, can optionally, for example alkanolamines, polyols such as ethylene glycol kol, propylene glycol, glycerin and alkylbenzenesulfonates with 1 to 3 carbon atoms in the alkyl radical, especially cumene, toluene and Xylene sulfonates.

The pH of the agents according to the invention is preferably between 5 and 9, especially between 6 and 8, extremely preferred between 6 and 7. The pH is adjusted if using conventional pH regulators such as citric acid or natri umhydroxide. Antimicrobial effects can be used to stabilize the storage substances or pH buffers in amounts up to 10% by weight, based on the active substance content of fatty acid oligoalkylene glycol ester sulfate (s) can be added.

The agents according to the invention can contain thickeners, for example urea, sodium chloride, magnesium sulfate or -chloride, ammonium chloride or polysaccharides and the like, the can also be used in combination. To adjust the vis kosität the agent can also substances such. B. gelatin or casein can be used without the performance of he agents according to the invention. In a preferred one Embodiment of the invention, however, the means are free from evil Chen thickeners.

Examples of preservatives are sodium benzoate, form to name aldehyde and sodium sulfite. The agents according to the invention can also contain common disinfectants.  

The agents according to the invention can be used as further components finally contain perfume, dyes and opacifiers, as well Skin protection components such as z. B. from the document EP 0 522 756 are known.

The following are examples of formulations of the invention Means given by stirring the individual ingredients together in any order and allowing the mixture to stand until Bubble-free were obtained.  

Examples

The agents E1 to E5 and the ver equal means V1 and V2 (composition in% by weight according to Table 1) manufactured and their cleaning performance and their emulsifying behavior examined. The pH was adjusted between citric acid in each case 6.2 and 6.6 set. Under water in Table 1 is What to understand water and pH regulator (s).

The surfactant components used were
A lauric acid + 1EO-estersulfate-NH ₄ salt (FSES),
B lauryl ether sulfate sodium salt (AES),
CC _8/14 alkyl polyglucoside (APG) and
D Coconut fatty acid amidopropyl betaine.

Table 1

Determination of the cleaning power of fatty acid oligoalkylene glycol ester and alkyl ether sulfate containing surfactant solutions

The cleaning power of the aqueous surfactant compositions E1 to E5 as well as V1 and V2 was tested in a mechanized plate test on one Beef tallow soiling (c = 0.15 g / l) and on a mixer dirt (c = 0.12 g / l) tested. As standard (cleaning ability gen = 100%) the cleaning ability of the mixture V2 was set. The percentage cleaning power obtained with respect to the V2 standards are shown in Table 2.  

Table 2

The rinsing capacity of the compositions E1 to E5, which the Kom components A and B is the only one of these two Components contained comparison means V1 and V2 synergistically think.

Determination of the emulsifying power of fatty acid oligoalkylene glycol ester and alkyl ether sulfate containing surfactant solutions

The emulsifying power of the aqueous surfactant compositions E1 to E5 as well as V1 and V2 was determined by adding 25 ml of surfactant solution 25 ml of olive oil are added, the mixture is stirred for 30 s and 50 ml of the obtained emulsion were transferred to a 50 ml measuring cylinder. Then after 1 h and after 4 h the volume of the sepa rated aqueous phase determined. The results obtained are in Table 3 reproduced in ml of aqueous phase.

Table 3

In the case of the AES-free composition, the emulsion is V1 the most stable, however, for the FSES-free composition V2 the most least persistent. An increasing proportion of FSES causes an increasing increasing stability, whereby FSES increases even with a quantitative ratio AES (A: B) from 1 to 1 (E4) a significant increase in stability can be determined.  

Determination of the viscosity of fatty acid oligoalkylene glycol ester and alkyl ether sulfate containing surfactant solutions

The viscosity of the aqueous surfactant compositions E1 to E5 and V1 and V2 were made using a Brookfield LVT viscometer of the type LVDV-II + in a Brookfield Small Sample Adapter (measuring sleeve for Sample volume from 2 to 16 ml) determined, with spindle and rotary number were chosen so that the measured viscosity in recommended measuring range. The measuring time was 2 minutes each at 20 ° C and a rotation frequency of 30 revolutions per minute te. The type numbers of the spindles used and the ones received Viscosities η are shown in Table 4.

Table 4

The viscosity can be achieved with a consistently good cleaning assets from E1 to E5 between 100 and 126% (Table 2) in one Set a very wide range from 160 to 6016 mPa.s. Here both viscosities can be set, which are significantly lower are as that of solution V2 without fatty acid oligoalkylene glycol ester sulfate (E1 to E4), as well as one that is much larger is than that of solution V1 without alkyl ether sulfate (E5).

Claims (12)

1. Aqueous hand dishwashing liquid, characterized in that it

• A) fatty acid oligoalkylene glycol ester sulfates of the formula I,
  R ¹ COO (R ² O) _n SO ₃ M (I)
  in which M represents a cation, in particular an ammonium ion, and R ¹ CO represents a linear or branched, aliphatic, saturated or unsaturated acyl radical having 6 to 22 carbon atoms, and R ² in (R ² O) _{n represents} an alkylene radical, in particular CH ₂ CH ₂ or CH (CH ₃ ) CH ₂ or CH ₂ CH (CH ₃ ), where n then denotes numbers from 0.5 to 5, or (R ² O) _{n is} a unit of the type (EO) _u (PO) _v (EO) _w represents, where E is CH ₂ CH ₂ and P is CH (CH ₃ ) CH ₂ or CH ₂ CH (CH ₃ ) and 0 ≦ u ≦ 5, 0.1 ≦ v ≦ 5 and 0 ≦ w ≦ 5 and u + w <0 and 0.5 ≦ (u + v + w) ≦ 5, and
• B) alkyl sulfates and / or alkyl ether sulfates of the formula II,
  R ³ O (CH ₂ CH ₂ O) _m SO ₃ M '(II)
  in which R ^{3 is} a saturated or unsaturated C ₈ -C ₂₂ -alkyl group, m is a number from 0 to 10 and M 'is an alkali metal or an alkaline earth metal cation or an ammonium ion,

contains. 2. Composition according to claim 1, characterized in that it is ethoxy contains fatty acid oligoalkylene glycol ester sulfates. 3. Means according to one of claims 1 or 2, characterized net that it is fatty acid oligoalkylene glycol ester sulfates of For mel I with an average degree of alkoxylation n or (u + v + w) from 0.7 to 3, preferably 0.9 to 2.   4. Agent according to one of claims 1 to 3, characterized in net that there are fatty acid oligoalkylene glycol ester sulfates (A) and the Sum of alkyl sulfates and alkyl ether sulfates (B) in one Ge weight ratio A to B contains at least 1 to 1. 5. Agent according to one of claims 1 to 3, characterized in net that there are fatty acid oligoalkylene glycol ester sulfates (A) and the Sum of alkyl sulfates and alkyl ether sulfates (B) in one Ge weight ratio A to B in the range of 4 to 1 to 1 to 4, be preferably 3 to 1 to 1 to 3, in particular 2 to 1 to 1 to 2, ent holds. 6. Agent according to one of claims 1 to 5, characterized in net that it contains the fatty acid oligoalkylene glycol ester sulfates in Men gen from 1 to 70 wt .-%, preferably 3 to 50 wt .-%, in particular re contains 6 to 30% by weight. 7. Agent according to one of claims 1 to 6, characterized in net that there are alkyl sulfates and / or alkyl ether sulfates in quantities from 0.1 to 40% by weight, preferably 0.1 to 20% by weight, in particular in particular 0.5 to 12% by weight, very preferably 1 to 8% by weight, contains. 8. Agent according to one of claims 1 to 7, characterized in net that it contains only alkyl ether sulfates as component B. 9. Composition according to one of claims 1 to 8, characterized in that it additionally contains alkyl polyglycosides of the formula III,
R ⁴ O [G] _x (III)
in the R ⁴ for a linear or branched, saturated or unsaturated alkyl radical having 8 to 22 carbon atoms, [G] for a glycosidically linked sugar radical and x for a number from 1 to 10, preferably 1.1 to 3, in particular 1.2 to 1.6, preferably in amounts of 0.1 to 20% by weight, in particular 0.5 to 10% by weight, most preferably 1 to 5% by weight, and / or in a ratio to the total amount of anionic surfactant from 1: 8 to 1: 4, in particular 1: 7 to 1: 5, contains. 10. Composition according to one of claims 1 to 9, characterized in that there are additionally betaine compounds of the formula IV,
(R ⁵ ) (R ⁶ ) (R ⁷ ) N-CH ₂ COO⁻ (IV)
in which R ^{5 is} an alkyl radical with 8 to 25, preferably 10 to 21 carbon atoms and optionally interrupted by hetero atoms or hetero atom groups and R ⁶ and R ^{7 are} identical or different alkyl radicals with 1 to 3 carbon atoms, preferably in amounts of 0.1 to 14% by weight .-%, in particular 1 to 8 wt .-%, contains. 11. Agent according to one of claims 1 to 10, characterized in net that it is additionally solvent, preferably low molecular alkanols with 1 to 4 carbon atoms, in particular Contains ethanol. 12. Composition according to one of claims 1 to 11, characterized in net that it is free of common thickeners.