DE102020132485A1 - Eco-sustainable hand dishwashing composition with sugar surfactants - Google Patents

Abstract

The invention relates to hand dishwashing detergents comprising sugar surfactants from renewable raw materials, the use of the same for cleaning hard surfaces, in particular dishes, and a method for manually cleaning hard surfaces, in particular dishes, using such hand dishwashing detergents.

Description

The invention relates to hand dishwashing detergents comprising sugar surfactants from renewable raw materials, the use of the same for cleaning hard surfaces, in particular dishes, and a method for manually cleaning hard surfaces, in particular dishes, using such hand dishwashing detergents.

Dishwashing compositions which are suitable for the manual cleaning of dishes must, on the one hand, be effective in removing a wide variety of soils and, on the other hand, be able to prevent material which has already been removed from being redeposited on the items to be washed. This object is achieved in particular by the surfactants usually added to the detergent, which emulsify various soilings, including in particular greasy and oily soiling, in the washing liquor. Consumers generally need dishwashing detergents of this type to have strong, long-lasting grease-dissolving power and at the same time adequate foam stability, since the foam that forms is interpreted as a visible indicator of the cleaning power of the detergent or of the washing liquor formed. At the same time, however, a trend can also be observed such that, against the background of increasing environmental awareness, consumers are paying more and more attention to the sustainability of such products and prefer those that have a favorable ecological footprint, for example by being made partially or predominantly from renewable raw materials.

The object on which the present invention is based was to provide a hand dishwashing detergent which, compared to hand dishwashing detergents known from the prior art, is ecologically more sustainable and has an improved ecological footprint without the cleaning performance being adversely affected.

This object is achieved according to the invention by a hand dishwashing detergent containing at least one sugar surfactant selected from oligomeric C _8-10 -alkyl glycosides.

In a first aspect, the present invention therefore relates to a hand dishwashing detergent comprising at least one sugar surfactant selected from C _8-10 -alkyl polyglycosides.

In a further aspect, the present invention further relates to the use of a hand dishwashing detergent as described herein for cleaning surfaces, preferably hard surfaces, in particular crockery, cutlery and cooking utensils.

Finally, in a final aspect, the present invention also relates to a method for manually cleaning surfaces, preferably hard surfaces, in particular crockery, cutlery and cooking utensils, characterized in that a manual dishwashing detergent, as defined herein, is used in at least one method step

All percentages are % by weight unless otherwise stated. Numeric ranges given in the format "from x to y" include the stated values. Where multiple preferred numeric ranges are given in this format, it is understood that any ranges resulting from the combination of the different endpoints are also included.

"At least one" as used herein includes but is not limited to 1, 2, 3, 4, 5, 6 and more. With regard to an ingredient, the information refers to the type of ingredient and not to the absolute number of molecules. “At least one sugar surfactant” thus means, for example, at least one type of sugar surfactant, i.e. one type of sugar surfactant or a mixture of several different sugar surfactants can be meant. Together with weight information, the information refers to all compounds of the type specified that are contained in the composition/mixture, i.e. the composition does not contain any other compounds of this type beyond the specified amount of the corresponding compounds.

"Approximately" as used herein in relation to numerical values means the corresponding value ±10%, preferably ±5%.

When reference is made herein to molar masses, this information always relates to the number-average molar mass M _n , unless explicitly stated otherwise. The number average molar mass can be determined, for example, by means of gel permeation chromatography (GPC) in accordance with DIN 55672-1:2007-08 with THF as the eluate to be determined. The mass-average molar mass M _w can also be determined by GPC, as described for M _n .

"Liquid" as used herein includes liquids and gels as well as pasty compositions. It is preferred that the liquid compositions are flowable and pourable at room temperature, but it is also possible for them to have a yield point.

"Phosphate-free" and "phosphonate-free", as used herein, means that the composition in question is essentially free of phosphates or phosphonates, i.e. in particular phosphates or phosphonates in amounts less than 0.1% by weight, preferably less than 0 .01% by weight, based on the respective composition.

The present invention relates to hand dishwashing detergents which can be used for the manual cleaning of items to be washed, such as crockery, cutlery and cooking items. According to the invention, the term "hand dishwashing detergent" as used herein includes, for example and without limitation, liquid hand dishwashing detergents, but also hand dishwashing detergents in solid and/or compact form, such as for example dishwashing powders and granules.

According to the invention, the hand dishwashing detergent comprises at least one sugar surfactant selected from C _8-10 -alkyl polyglycosides. The C _8-10 alkyl polyglycosides are preferably capryl (C8)/caprinyl (C10) alkyl polyglycosides, ie have n-octyl radicals, n-decyl radicals or, preferably, both, ie are a mixture of C ₈ - and C ₁₀ alkyl polyglycosides.

The C _8-10 -alkylpolyglycosides used according to the invention preferably satisfy the general formula R'O[G] _x , in which R' represents the C _8-10 alkyl radical, [G] represents a glycosidically linked sugar radical and x represents a number from 1 to 10 standing. The index number x indicates the degree of oligomerization (DP degree), ie the distribution of mono- and oligoglycosides, and stands for a number between 1 and 10. While x in a given compound must always be an integer and here in particular the values x= 1 to 6, the value x for a specific alkyl glycoside is an analytically calculated value that is usually a fractional number. Alkyl glycosides with an average degree of oligomerization x of >1, for example 1.1 to 5.0 or 1.1 to 3.0, are preferably used. In various embodiments, the degree of oligomerization can be less than 1.7, for example between 1.2 and 1.6. At least one pentose is preferably present as the glycosidic sugar, for example selected from D-ribose, D-arabinose and D-xylose. Furthermore, at least one hexose unit, for example a glucose unit, can be present in addition to the at least one pentose. In various preferred embodiments, the C _8-10 alkyl polyglycosides of the invention are C _8-10 alkyl polypentosides (APPs), particularly oligomeric C _8-10 alkyl pentosides. Such APPs or oligomeric C _8-10 -alkyl pentosides contain one or more pentose residues derived, for example, from D-ribose, D-arabinose and/or D-xylose, and optionally also one or more hexose residues, in particular D-glucose residues. Oligomeric C ₈ - and C ₁₀ -alkyl glycosides which contain at least one D-pentose and D-glucose and their mixtures or combinations of such compounds are particularly preferred. Such surfactants are available under the name APPYCLEAN®, for example APPYCLEAN® 6781, 6782 and 6783, from Wheatoleo and Stockmeier Chemie (Bielefeld, DE).

The sugar surfactants used according to the invention differ from known APGs by the length of the alkyl chain and the feature that the sugar residue contains at least one pentose residue, whereas the customary and known APGs are based almost exclusively on hexoses, in particular glucose.

Sugar surfactants of this type are obtainable from renewable raw material sources, in particular from biomasses occurring in food production, such as, for example, bran, in particular wheat bran. In this way, ecologically questionable raw materials, such as those derived from palm oil production, are avoided. Such surfactants are readily biodegradable under both aerobic and anaerobic conditions.

The hand dishwashing detergent according to the invention can preferably contain from 0.05 to 20% by weight, in particular from 0.1 to 15% by weight, particularly preferably at least 0.2% by weight, at least 0.3% by weight or at least 0.4% by weight % by weight of the C _8-10 alkyl polyglycoside described. The amount is preferably up to 10% by weight, for example up to 8% by weight, up to 6% by weight, up to 5% by weight, up to 4% by weight or up to 3% by weight. %. All of the above information relates to the total weight of the agent.

In various embodiments, the hand dishwashing detergent also contains at least one further surfactant. In the context of the present invention, other suitable surfactants are known in the art and include anionic surfactants, cationic surfactants, nonionic surfactants, zwitterionic, amphoteric surfactants, and mixtures thereof. Combinations with at least one anionic surfactant, at least one zwitterionic or amphoteric surfactant and/or at least one further nonionic surfactant are preferred. Combinations with at least one anionic surfactant and at least one zwitterionic or amphoteric surfactant are particularly preferred. Suitable surfactants are described in detail below.

anionic surfactants

The group of suitable anionic surfactants includes fatty alcohol ether sulfates, ie the reaction products of alkylene oxide, preferably ethylene oxide, with fatty alcohols, preferably with aliphatic straight-chain or mono- or polybranched, acyclic or cyclic, saturated or mono- or polyunsaturated, preferably straight-chain , Acyclic, saturated alcohols having 6 to 22, preferably 8 to 18, in particular 10 to 16 and particularly preferably 12 to 14 carbon atoms. Depending on the reaction conditions, a complex mixture of addition products of different degrees of ethoxylation (n=1 to 30, preferably 1 to 20, in particular 1 to 10, particularly preferably 2 to 4) is generally formed from n moles of ethylene oxide and one mole of alcohol. For the purposes of the present invention, very particular preference is given to low-ethoxylated fatty alcohols having 1 to 4 ethylene oxide units (EO), in particular 1 to 2 EO, for example 2 EO, such as Na-C ₁₂ -C ₁₄ fatty alcohols+2 EO sulfate. Most preferred here are lauryl ether sulfates, especially those with 2 EO, and here in particular the sodium salt (SLES). For example, a sodium lauryl ether sulfate sold under the trade name ^Texapon® N70 by BASF can be used. Such fatty alcohol ether sulfates can also be obtained from naturally occurring fatty alcohols.

In preferred embodiments, the hand dishwashing detergent according to the invention contains one or more fatty alcohol ether sulfates, as defined above, in particular lauryl ether sulfate, preferably in an amount of from 3 to 50% by weight, in particular from 5 to 40% by weight, to 35% by weight, to 30 % by weight, up to 25% by weight, up to 20% by weight, or up to 15% by weight, based in each case on the total weight of the hand dishwashing detergent.

The anionic surfactants which can also be used with preference in hand dishwashing detergents include alkali metal salts of fatty alcohol sulfates. The hand dishwashing detergent according to the invention can therefore contain 0.05 to 15% by weight, in particular 0.1 to 10% by weight, particularly preferably 0.3 to 5% by weight, of the alkali metal salt of a fatty alcohol sulfate, based on the total weight of the detergent. According to the invention, the fatty alcohol sulfate can preferably have 12 to 14 carbon atoms. The alkali salt is preferably a sodium salt. In particular, the alkali metal salt of the fatty alcohol sulfate can be sodium lauryl sulfate. This can be used in technical purity, so that a mixture of alkyl chains with a chain length of preferably 12 to 14 carbon atoms is present. For example, a sodium lauryl sulfate sold under the trade name ^Texapon® LS35 by BASF can be used.

The anionic surfactants that can also be used in hand dishwashing detergents also include alkyl sulfonates. The alkyl sulfonates (INCI: sulfonic acids) usually have an aliphatic, straight-chain or mono- or polybranched, acyclic or cyclic, saturated or mono- or polyunsaturated, preferably branched, acyclic, saturated alkyl radical with 6 to 22, preferably 9 to 20, in particular 11 to 18 and more preferably 14 to 17 carbon atoms. Suitable alkyl sulfonates are therefore the saturated alkane sulfonates, unsaturated olefin sulfonates and - formally derived from the alkoxylated alcohols on which the alkyl ether sulfates are based - ether sulfonates, in which terminal ether sulfonates (n-ether sulfonates) with a sulfonate function attached to the polyether chain and internal ether sulfonates ( i-Ethersulfonates) with a sulfonate function linked to the alkyl radical. Typically preferred are the alkanesulfonates, in particular alkanesulfonates having a branched, preferably secondary, alkyl radical, for example the secondary alkanesulfonate sec. Na-C ₁₃ -C ₁₇ alkanesulfonate (INCI: Sodium C _14-17 Alkyl Sec Sulfonate).

The hand dishwashing detergent may contain one linear alkyl benzene sulfonate or two or more linear alkyl benzene sulfonates as anionic surfactant(s). The agent according to the invention can contain these preferably in 0.1 to 20% by weight, in particular 1 to 10% by weight, particularly preferably 2 to 5% by weight, based on the total weight of the agent. Linear alkyl benzene sulfonates usually have benzene In addition to a sulfonic acid or sulfonate group, the ring also has an aliphatic straight-chain or mono- or polybranched, acyclic, saturated or mono- or polyunsaturated alkyl side chain having 6 to 22, preferably 8 to 20, in particular 10 to 16 and particularly preferably 12 to 14 carbon atoms. In preferred embodiments, these are the sodium salts of the linear alkyl benzene sulfonates. In various preferred embodiments, no such alkyl benzene sulfonates are included.

Other possible anionic surfactants (anionic surfactants) that can be used are known to the person skilled in the art from the relevant prior art relating to detergents or cleaning agents. These include in particular aliphatic sulfates such as monoglyceride sulfates and ester sulfonates (sulfofatty acid esters), lignin sulfonates, fatty acid cyanamides, anionic sulfosuccinic acid surfactants, fatty acid isothionates, acylaminoalkane sulfonates (fatty acid taurides), fatty acid sarcosinates, ether carboxylic acids and alkyl (ether) phosphates,

The hand dishwashing detergents according to the invention described herein preferably contain at least one anionic surfactant. This is particularly preferably a fatty alcohol ether sulfate, as described above. In various embodiments of the invention, no further anionic surfactant is present in addition to the at least one fatty alcohol ether sulfate.

In various embodiments, the total amount of anionic surfactants is up to a maximum of 50% by weight, preferably up to 40% by weight, up to 35% by weight, up to 30% by weight, up to 25% by weight, up to 20% by weight % by weight, or up to 15% by weight, in each case based on the total weight of the hand dishwashing detergent.

Amphoteric/zwitterionic surfactants

In various embodiments of the invention, the hand dishwashing detergents contain at least one amphoteric or zwitterionic surfactant.

The amphoteric surfactants (amphoteric surfactants, zwitterionic surfactants) that can be used according to the invention include betaines, amine oxides, alkylamidoalkylamines, alkyl-substituted amino acids and acylated amino acids or biosurfactants.

The use of betaines is particularly preferred. Suitable betaines are the alkyl betaines, the alkylamidobetaines, the imidazolinium betaines, the sulfobetaines (INCI: sultaines) and the phosphobetaines and preferably satisfy formula (I): R ¹ -[CO-X-(CH ₂ ) _n ] _x -N(R ² )(R ³ )-(CH ₂ ) _m -[CH(OH)-CH ₂ ] _y -Y ^- (I) in the
R ¹ is a saturated or unsaturated C _6-22 alkyl radical, preferably C _8-18 alkyl radical, in particular a saturated C _10-16 alkyl radical, for example a saturated C _12-14 alkyl radical,
X NH, NR ⁴ with R ⁴ = C _1-4 alkyl radical, O or S,
n is a number from 1 to 10, preferably from 2 to 5, in particular 3,
x is 0 or 1, preferably 1,
R ² , R ³ are independently a C _1-4 alkyl radical, optionally hydroxy-substituted such as a hydroxyethyl radical, but especially a methyl radical,
m is a number from 1 to 4, in particular 1, 2 or 3,
y 0 or 1, and
Y is COO, SO ₃ , OPO(OR ⁵ )O or P(O)(OR ⁵ )O, where R ⁵ is hydrogen, H or C _1-4 alkyl.

The alkyl and alkyl amido betaines, betaines of the formula I with a carboxylate group (Y=COO ^- ), are also called carbobetaines.

Preferred betaines are the alkyl betaines of the formula (Ia), the alkylamidobetaines of the formula (Ib), the sulfobetaines of the formula (Ic) and the amidosulfobetaines of the formula (Id), R ¹ -N ⁺ (CH ₃ ) ₂ -CH ₂ COO ^- (Ia) R ¹ -CO-NH-(CH ₂ ) ₃ -N ⁺ (CH ₃ ) ₂ -CH ₂ COO ^- (Ib) R'-N ⁺ (CH3 ) _{2 -CH2} CH(OH _{) CH2 SO3} ^- (Ic) R ¹ -CO-NH-(CH ₂ ) ₃ -N ⁺ (CH ₃ ) ₂ -CH ₂ CH(OH)CH ₂ SO ₃ ^- (Id) in which R ¹ has the same meaning as in formula I.

Particularly preferred betaines are the carbobetaines, in particular the carbobetaines of the formula (Ia) and (Ib), most preferably the alkylamidobetaines of the formula (Ib).

Examples of suitable betaines and sulfobetaines are mandelamidopropyldimethyl glycine; 1-propanaminium, N-(carboxymethyl)-N,N-dimethyl-3-[(1-oxoapricot)amino]-, hydroxide, inner salts; 1-propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl, N-avocado oil acyl derivatives, inner salts; 1-Propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl-,N-babassu oil acyl derivatives, hydroxides, inner salts; 1-propanaminium, N-carboxymethyl-N,N-dimethyl-3-[(1-oxodocosanyl)amino]-, hydroxide inner salt; (carboxylatomethyl)docosyldimethylammonium; methanaminium, 1-carboxy-N,N,N-trimethyl-, hydroxide inner salt; 1-propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl-canola oil acyl derivatives, inner salts; 2-[3-(octylamido)propyl]-N,N-dimethylammonioacetate and 2-[3-(decylamido)propyl]-N,N-dimethylammonioacetate; 1-propanaminium, 3-carboxy-2-hydroxy-N,N,N-trimethyl-, inner salt (R)-; (carboxylatomethyl)hexadecyldimethylammonium; 1-Ethanaminium, N-(carboxymethyl)-N,N-dimethyl-2-[(1-oxococoalkyl)amino]-, hydroxides, inner salt; N-coco acyl derivatives of 3-amino-N-(carboxymethyl)-N,N-dimethyl-1-propanaminium; hydroxides, internal salts; 1-Propanaminium, N-(3-aminopropyl)-2-hydroxy-N,N-dimethyl-3-sulfo-,N-coco-acyl derivatives, hydroxides, inner salts; coco alkyldimethyl betaines; N-coco acyl derivatives of N,N-dimethyl-2-hydroxy-3-sulfo-1-propanamine; hydroxides, internal salts; N-(mixed coco acyl and 9-octadecenoyl) derivatives of N-carboxymethyl-N,N-dimethyl-3-amino-1-propanaminium; hydroxides, internal salts; N-coco acyl derivatives of N,N-dimethyl-3-sulfo-1-propanaminium; hydroxides, inner salts; (carboxymethyl)decyldimethylammonium hydroxide; 9-octadecene-1-aminium, N-(carboxymethyl)-N,N-bis(-2-hydroxyethyl)-, hydroxide, inner salt; Soybean Alkylaminium, N-carboxymethyl-N,N-bis(2-hydroxyethyl)-, hydroxides, inner salts; (carboxymethyl)bis(2-hydroxyethyl)octadecylammonium hydroxide; tallow alkylaminium, N-carboxymethyl-N,N-bis(2-hydroxyethyl)-, hydroxides, inner salt; (INCI: Dimethicone Propyl PG-Betaine), 1-propanaminium, 2-hydroxy-N,N-dimethyl-N-[3-[(1-oxo-13-docosenyl)amino]propyl]-3-sulfo-, hydroxide , inner salt; methanaminium, N-methyl-N-carboxymethyl-N-(hydrogenated tallow alkyl)-; 1-propanaminium, N-carboxymethyl-N,N-dimethyl-3-(1-oxoisooctadecylamino)- hydroxide inner salt; (carboxymethyl)dimethyl-3-[(1-oxododecyl)amino]propylammonium hydroxide; (carboxylatomethyl)dodecyldimethylammonium; dodecyl(2-hydroxy-3-sulfonatopropyl)dimethylammonium; dodecyldimethyl(3-sulfonatopropyl)ammonium; 1-propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl, N-milk fat acyl derivatives, inner salts; 1-Propanaminium, N,N-dimethyl-N-carboxymethyl-3-amino, N-mink oil acyl derivatives, hydroxides, inner salts; (carboxymethyl)dimethyl-3-[(1-oxotetradecyl)amino]propylammonium hydroxide; (carboxylatomethyl)dimethyltetradecylammonium; (Z)-(carboxymethyl)dimethyl-3-[(1-oxo-9-octadecenyl)amino]propylammonium hydroxide; (Z)-2-Hydroxy-3-sulfonatopropyldimethyl[3-[(1-oxo-9-octadecenyl)amino]propyl]ammonium; (carboxymethyl)dimethyloleylammonium hydroxide; 1-propanaminium, N-carboxymethyl-N,N-dimethyl-3-amino, N-olive acyl derivatives, hydroxides, inner salts; 1-propanaminium, N-carboxymethyl-N,N-dimethyl-3-amino,N-(palm oil acyl) derivatives, hydroxides, inner salts; 1-propanaminium, N-(carboxymethyl)-N,N-dimethyl-3-[(1-oxohexadecyl)amino]-, inner salt; 1-propanaminium, 3-carboxy-2-(1-oxohexadecyloxy)-N,N,N-trimethyl-, hydroxide inner salt; 1-propanaminium, N-carboxymethyl-N,N-dimethyl-3-amino, palm acyl derivatives, hydroxides, inner salts; poly(difluoromethylene), α-[2-(acetyloxy)-3-[(carboxymethyl)dimethylammonio]propyl]-ω-fluoro, inner salt; 1-Propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl-,N-castor oil acyl derivatives, hydroxides, inner salts; 1-propanaminium, N-carboxymethyl-N,N-dimethyl-3-amino, N-sesame oil acyl derivatives, hydroxides, inner salts; 1-propanaminium, 3-amino-N-carboxymethyl-N,N-dimethyl, N-soybean acyl derivatives, hydroxides, inner salts; (carboxymethyl)dimethyl-3-[(1-oxooctadecyl)amino]propylammonium hydroxide; (carboxylatomethyl)dimethyl(octadecyl)ammonium; 1-propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl, N-tallow acyl derivatives, hydroxides, inner salts; tallow amides, N-[3-(dimethylamino)propyl]-, alkylation products with sodium 3-chloro-2-hydroxypropanesulfonate; betaines, bis(hydroxyethyl)tallow alkyl; tallow alcohols; (Carboxymethyl)dimethyl[3-[(1-oxoundecenyl)amino]propyl]ammonium hydroxide and 1-propanaminium, N-carboxymethyl-N,N-dimethyl-3-amino, N-wheat germ acyl derivatives, hydroxides, inner salts . A preferred betaine is, for example, cocoamidopropyl betaine or betaine, which is commercially available from Evonik under the trade name Tego® Natural Betaine.

The betaines are preferably used in amounts of at least 1% by weight, preferably at least 2% by weight or at least 3% by weight, based in each case on the total weight of the composition. The amount is, for example, up to 40% by weight, up to 35% by weight, up to 30% by weight, up to 25% by weight, up to 20% by weight, up to 15% by weight, up to 10% by weight. -% or up to 8% by weight in each case based on the total weight of the hand dishwashing detergent.

Useful amine oxides include alkyl amine oxides, particularly alkyl dimethyl amine oxides, alkyl amido amine oxides and alkoxyalkyl amine oxides.

Preferred amine oxides satisfy formula II or III, R ⁶ R ⁷ R ⁸ N ⁺ -O ^- (II) or R ⁶ -[CO-NH-(CH ₂ ) _w ] _z -N ⁺ (R ⁷ )(R ⁸ )-O ^- (III) in the
R ⁶ is a saturated or unsaturated C _6-22 alkyl radical, preferably C _8-18 alkyl radical, in particular a saturated C _10-16 alkyl radical, for example a saturated C _12-14 alkyl radical, which in the alkylamidoamine oxides via a carbonylamidoalkylene group -CO -NH-(CH ₂ ) _z - and in the alkoxyalkylamine oxides via an oxaalkylene group -O-(CH ₂ )z- to the nitrogen atom N, where z is in each case a number from 1 to 10, preferably 2 to 5, in particular 3 , stands,
where w is a number from 0 to 5, preferably 0 to 2, in particular 0 or 1, R ⁷ , R ⁸ are independently a C _1-4 alkyl radical, optionally hydroxy-substituted such. B. is a hydroxyethyl radical, in particular a methyl radical.

Examples of suitable amine oxides are the following compounds: Amide, Mandel,N-[3-(dimethylamino)propyl]-,N-oxide; propane,1-dimethylamino-3-[(1-oxobabassu)amino]-,N-oxide; N,N-dimethyldocosylamine N-oxide; amides, coco,N-[3-(dimethylamino)propyl]; amines, coco-alkyldimethyl, N-oxide; morpholine, 4-coco-alkyl derivatives, 4-oxide; N,N-dimethyldecylamine,N-oxide; 1-tetradecanamine,2-decyl-N,N-dimethyl,N-oxide; 2,4-pyrimidinediamine,3-oxide; ethanol,2,2'-iminobis,N-[3-(C ₈ -C ₁₀ alkyloxy)propyl] derivatives, N-oxide; ethanol,2,2'-iminobis, N -[3-(C ₉ -C ₁₁ alkyloxy)propyl] derivatives, N -oxide; ethanol,2,2'-iminobis,N-[3-(C ₁₂ -C ₁₅ alkyloxy)propyl] derivatives, N-oxide; ethanol,2,2'-iminobis,N-coco-alkyl derivatives, N-oxide; dodecylamine, N,N-bis(2-hydroxyethyl)-,N-oxide; ethanol,2,2'-(octadecylimino)bis,N-oxide; ethanol, 2,2'-iminobis, N-tallow alkyl derivatives, N-oxide; amines, (hardened palm kernel oil alkyl)dimethyl,N-oxide; amines, (hydrogenated tallow alkyl)dimethyl, N-oxide; 1-propylamine,3-(C ₁₂ -C ₁₅ alkyloxy)-N-(2-hydroxyethyl)-N-(3-hydroxypropyl)-,N-oxide; isooctadecanamide, N -[3-(dimethylamino)propyl]-,N-oxide; isooctadecanamide, N -[3-(4-morpholinyl)propyl]-N-oxide; N -[3-(dimethylamino)propyl]dodecanamide N-oxide; dodecyldimethylamine oxide; 4-methylmorpholine-4-oxide monohydrate; milk fat amides, N-[3-(dimethyloxidoamino)propyl]; 1,3-propanediamine, N,N-dimethyl,N'-mink oil acyl derivatives, N-oxide; N -[3-(dimethylamino)propyl]myristamide N-oxide; N,N-dimethyltetradecylamine N-oxide; amines, N-(C ₁₄ -C ₁₆ -alkyl)-N,N-dimethyl, N-oxide; N -[3-(dimethylamino)propyl]-9-octadecenamide N-oxide; N,N-dimethyloleyl-N-oxide; olive oil amides, N-(3-dimethylaminopropyl)-,N-oxide; hexadecanamide, N -[(3-dimethylamino)propyl]-,N-oxide; hexadecyldimethylamine N-oxide; α-Hydro-ω-.ω'-[(dodecyloxidoimino)dipoly(oxy-1,2-ethanediyl), (average molar ratio 3 moles EO); phosphoric acid, monoesters with coco-alkylbis(2-hydroxyethyl)amine N-oxides, dipotassium salts; nitrilotris(methanephosphonic acid)-N-oxide, tripotassium salt; Sesame Oil Amide, N-(3-dimethylaminopropyl)-,N-oxide; Soyamides, N-[-3-(dimethylamino)propyl]-,N-oxide; N -[3-(dimethylamino)propyl]stearamide N-oxide; N,N-dimethyloctadecylamine N-oxide; tallow amides, N -[3-(dimethylamino)propyl]-,N-oxide; amine, tallow alkyldimethyl, N-oxide; 10-undecenamide, N-[3-(dimethylamino)propyl],N-oxide and wheat germ amides, N-(3-dimethylaminopropyl)-,N-oxide. A preferred amine oxide is, for example, cocamidopropylamine oxide (INCI: Cocoamidopropylamine oxide). The amine oxide is preferably selected from cocamidopropyl amine oxide, N-cocoalkyl-N,N-dimethyl amine oxide, N-tallow alkyl-N,N-dihydroxyethyl amine oxide, myristyl/cetyl dimethyl amine oxide or lauryl dimethyl amine oxide or mixtures thereof.

The alkylamidoalkylamines (INCI: Alkylamido Alkylamines) are amphoteric surfactants of the formula (IV), R ⁹ -CO-NR ¹⁰ -(CH ₂ ) _i -N(R ¹¹ )-(CH ₂ CH ₂ O) _j (CH ₂ ) _k - [CH(OH)]i-CH ₂ -Z-OM (IV) in the
R ⁹ is a saturated or unsaturated C _6-22 alkyl radical, preferably C _8-18 alkyl radical, in particular a saturated C _10-16 alkyl radical, for example a saturated C _12-14 alkyl radical,
R ¹⁰ is hydrogen, H or C _1-4 alkyl, preferably H,
i is a number from 1 to 10, preferably 2 to 5, in particular 2 or 3,
R ¹¹ is a hydrogen atom H or CH ₂ COOM (M is defined as follows),
j is a number from 1 to 4, preferably 1 or 2, in particular 1,
k is a number from 0 to 4, preferably 0 or 1,
I 0 or 1, where k = 1 if I = 1,
Z CO, SO ₂ , OPO(OR ¹² ), or P(O)(OR ¹² ), wherein R ¹² is C _1-4 alkyl or M (defined as follows), and M is a hydrogen, an alkali metal, an alkaline earth metal or a protonated alkanolamine, eg protonated mono-, di- or triethanolamine.

Preferred representatives satisfy the formulas IVa to IVd, R ⁹ -CO-NH-(CH ₂ ) ₂ -N(R ¹¹ )-CH ₂ CH ₂ O-CH ₂ -COOM (IVa) R ⁹ -CO-NH-(CH ₂ ) ₂ -N(R ¹¹ )-CH ₂ CH ₂ O-CH ₂ CH ₂ -COOM (IVb) R ⁹ -CO-NH-(CH ₂ ) ₂ -N(R ¹¹ )-CH ₂ CH ₂ O-CH ₂ CH(OH)CH ₂ -SO ₃ M (IVc) R ⁹ -CO-NH-(CH ₂ ) ₂ -N(R ¹¹ )-CH ₂ CH ₂ O-CH ₂ CH(OH)CH ₂ -OPO ₃ HM (IVd) in which R ¹¹ and M have the same meaning as in formula (III).

Examples of suitable alkylamidoalkylamines are, for example, those in WO 2008/046778 A1 disclosed, to which reference is explicitly made.

Likewise suitable amphoteric surfactants are in particular N-2-hydroxyethyl-N-carboxymethyl fatty acid amidoethylamine-Na (commercially available as Rewoteric® AMV) and N-caprylic/caprinamidoethyl-N-ethyl ether propionate-Na (commercially available as Rewoteric® AMVSF).

Exemplary suitable alkyl-substituted amino acids are in WO 2008/046778 A1 disclosed, to which reference is explicitly made.

The hand dishwashing detergents according to the invention described herein preferably contain at least one amphoteric or zwitterionic surfactant. This is particularly preferably a betaine, as described above. In various embodiments of the invention, no further amphoteric/zwitterionic surfactant is present in addition to the betaine.

The total amount of amphoteric/zwitterionic surfactants is, in various embodiments, up to a maximum of 50% by weight, preferably up to 40% by weight, up to 35% by weight, up to 30% by weight, up to 25% by weight, up to 20% by weight, up to 15% by weight or up to 10% by weight, based in each case on the total weight of the hand dishwashing detergent.

Other nonionic surfactants

In addition to the C _8-10 alkyl polyglycosides according to the invention, other nonionic surfactants can be used.

Examples of nonionic surfactants used are alkoxylated, advantageously ethoxylated, in particular primary alcohols preferably having 8 to 18 carbon atoms and an average of 1 to 12 moles of ethylene oxide (EO) per mole of alcohol, in which the alcohol radical can be linear or preferably methyl-branched in the 2-position or may contain linear and methyl-branched radicals in the mixture, such as are usually present in oxo alcohol radicals. In particular, however, alcohol ethoxylates with linear radicals from alcohols of natural origin with 12 to 18 carbon atoms, for example from coconut, palm, tallow or oleyl alcohol, and an average of 2 to 8 EO per mole of alcohol are preferred. Preferred ethoxylated alcohols include, for example, C _12-14 alcohols with 3 EO, 4 EO or 7 EO, C _9-11 alcohol with 7 EO, C _13-15 alcohols with 3 EO, 5 EO, 7 EO or 8 EO, C _12-18 alcohols with 3 EO, 5 EO or 7 EO and mixtures of these, such as mixtures of C _12-14 alcohol with 3 EO and C _12-18 alcohol with 7 EO. The degrees of ethoxylation given represent statistical averages, which can be an integer or a fraction for a specific product. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE). In addition to these nonionic surfactants, fatty alcohols with more than 12 EO can also be used. Examples of this are tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO. Nonionic surfactants which contain EO and PO groups together in the molecule can also be used according to the invention. More preferably, the hard surface cleaner contains a C12-18 fatty alcohol with 7 EO or a C13-15 oxo alcohol with 7 EO as nonionic surfactant.

According to the invention, sugar surfactants which are different from the C _8-10 alkyl polyglycosides according to the invention can also optionally be used. These include known surface-active compounds, which include, for example, the sugar surfactant classes of the alkyl glucose esters, aldobionamides, gluconamides (sugar acid amides), glyceramides, glycerol glycolipids, polyhydroxy fatty acid amide sugar surfactants (sugar amides) and alkyl polyglycosides.

Alkyl polyglycosides (APG) preferably satisfy the general formula R'O(AO) _a [G] _x in which R' 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] is a glycosidically linked sugar residue and x is a number from 1 to 10 and AO is an alkyleneoxy group, for example an ethyleneoxy or propyleneoxy group, and a is the average degree of alkoxylation from 0 to 20. Here, the group (AO) _a can also contain different alkyleneoxy units, for example ethyleneoxy or propyleneoxy units, in which case a is the average overall degree of alkoxylation, ie the sum of the degree of ethoxylation and degree of propoxylation. Unless stated otherwise in more detail below, the alkyl radicals R' of the APG are linear unsaturated radicals having the specified number of carbon atoms.

APG are nonionic surfactants and are known substances that can be obtained by the relevant methods of preparative organic chemistry. The index number x indicates the degree of oligomerization (DP degree), ie the distribution of mono- and oligoglycosides, and stands for a number between 1 and 10. While x in a given compound must always be an integer and here in particular the values x = 1 to 6, the value x for a specific alkyl glycoside is an analytically calculated value that is usually 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 alkyl glycosides whose degree of oligomerization is less than 1.7 and in particular is between 1.2 and 1.6. Glucose is preferably used as the glycosidic sugar. The alkyl or alkenyl radical R' can be derived from primary alcohols having 8 to 18, preferably 8 to 14, carbon atoms. Typical examples are caproic alcohol, caprylic alcohol, capric alcohol and undecyl alcohol and the technical mixtures thereof obtained, for example, 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′ is preferably derived from lauryl alcohol, myristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol or oleyl alcohol. Mention should also be made of elaidyl alcohol, petrolemyl alcohol, arachidyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol and technical mixtures thereof.

Particularly preferred APG are not alkoxylated (a = 0) and satisfy the formula RO[G] _x , in which R as before represents a linear or branched, saturated or unsaturated alkyl radical having 4 to 22 carbon atoms, [G] represents a glycosidically linked sugar radical, preferably a glucose residue, and x is a number from 1 to 10, preferably from 1.1 to 3, in particular from 1.2 to 1.6. Correspondingly preferred alkyl polyglycosides are, for example, C _8-10 - and a C _12-14 -alkyl polyglucoside with a DP degree of 1.4 or 1.5, in particular C _8-10 -alkyl-1,5-glucoside and C _12-14 -alkyl-1,4-glucoside.

Other suitable nonionic surfactants are C _10-14 fatty alcohol+1.2PO+6.4EO (commercially available as Dehydol® 980), C _12/14 fatty alcohol+6EO (commercially available as Dehydol® LS6), C ₈ fatty alcohol+ 1,2PO+9EO (commercially available as Dehydol® O10), C _16/20 Guerbet alcohol+8EO, n-butyl-capped (commercially available as Dehypon® G2084), mixture of several n-butyl-capped nonionic surfactants and C _8/10 - APG (commercially available as Dehypon® Ke 2555), C _8/10 fatty alcohol+1PO+22EO-(2-hydroxydecyl)-ether (commercially available as Dehypon® Ke 3447), C _12/14 fatty alcohol+5EO+4PO ( commercially available as Dehypon® LS 54 G), C _12/14 fatty alcohol+5EO+3PO, methyl capped (commercially available as Dehypon® LS 531), C _12/14 fatty alcohol+10EO, n-butyl capped (commercially available as Dehypon® LS 104 L), C ₁₁ oxo alcohol+8EO (commercially available as Genapol® UD 088), C ₁₃ oxo alcohol+8EO (commercially available as Genapol® X 089), C _13/15 fatty alcohol EO adduct t, n-butyl capped (commercially available as Plurafac® LF 221) and alkoxylated fatty alcohol (commercially available as Tegotens® EC11).

In various embodiments of the invention, the dishwashing detergent according to the invention contains no additional APGs or other sugar surfactants other than the C _8-10 alkyl polyglycosides according to the invention. In various embodiments of the invention, no further nonionic surfactant can be present in addition to the C _8-10 alkyl polyglycosides according to the invention.

The total amount of nonionic surfactant in the composition is preferably not more than 30% by weight, preferably not more than 25% or 20% by weight.

cationic surfactants

The agent according to the invention can additionally contain one or more cationic surfactants (cationic surfactants; INCI: Quaternary Ammonium Compounds). Known cationic surfactants are the quaternary surface-active compounds, in particular with an ammonium, sulfonium, phosphonium, iodonium or arsonium group, which are also known as antimicrobial agents.

However, it is preferred that such cationic surfactants are not included.

The total surfactant content of the hand dishwashing detergent according to the invention is preferably about 4 to about 60% by weight, preferably about 5 to about 50% by weight, based in each case on the total weight of the hand dishwashing detergent. The total amount of surfactant can also be up to a maximum of 45% by weight, up to 40% by weight, up to 35% by weight, up to 30% by weight or up to 25% by weight.

In various embodiments, the hand dishwashing detergent contains, in addition to the sugar surfactants according to the invention, at least one anionic surfactant, in particular a fatty alcohol ether sulfate, and at least one amphoteric or zwitterionic surfactant, in particular a betaine.

In various embodiments, the pH of the hand dishwashing detergents is in the range of 4 to 9, preferably in the range of 4.0 to 8.0, most preferably in the range of 4.5 to 7.0.

In various embodiments, a hand dishwashing detergent according to the invention also contains water as a further component. In corresponding embodiments, the agent contains water preferably in an amount of about 0.01 to about 98% by weight, preferably in an amount of about 1 to about 95% by weight, more preferably in an amount of about 5 to about 90% % by weight, in each case based on the total weight of the hand dishwashing detergent composition. A liquid dishwashing detergent composition according to the invention contains, for example, preferably about 50% to about 90% by weight, for example about 50, 51, 52, 53, 54, 55, 60, 65, 70, 75, 80, 85 or 90% by weight. -% water, each based on the total weight of the hand dishwashing detergent composition.

In some embodiments, the agent according to the invention contains, in addition to the aforementioned components, at least one other ingredient which, for example but without limitation, can be selected from the group consisting of builders, enzymes, organic solvents, perfumes, fragrances, dyes, pearlescent agents, UV -Stabilizers, corrosion inhibitors, chelators, disinfectants, pH adjusters and preservatives, additives to improve the sagging and drying behavior, additives to adjust the viscosity and for stabilization, additives that improve the feel of the skin and/or care for it, and mixtures thereof.

The amount of such further additives is, in various embodiments, up to about 40% by weight, in particular up to about 30% by weight, preferably up to about 25% by weight, more preferably up to about 20% by weight, in each case based on the total weight of the hand dishwashing detergent.

Examples of additives and additives suitable in the context of the present invention are listed below.

Substances that are also used as ingredients in cosmetic products are referred to below, where appropriate, in accordance with the International Nomenclature Cosmetic Ingredient (INCI) nomenclature. Chemical compounds carry an INCI designation in English. In the following, the German translation is given as far as possible and, if necessary, the English name in brackets. The INCI designation can be found in the "International Cosmetic Ingredient Dictionary and Handbook, 7th Edition (1997)" published by The Cosmetic, Toiletry and Fragrance Association (CTFA), Washington D.C. (USA) is published. The indication CAS means that the following sequence of numbers is a designation of the Chemical Abstracts Service.

Polymeric polycarboxylates, for example, are suitable as builders which can be present in a dishwashing detergent according to the invention. These are, for example, the alkali metal salts of polyacrylic acid or polymethacrylic acid, for example those with a number-average molecular weight of 600 to 750,000 g/mol. Suitable polymers are in particular polyacrylates, preferably with a number-average molecular weight of 1000 to 15000 g/mol. Due to their superior solubility, the This group in turn, the short-chain polyacrylates, with a number-average molecular weight of 1000 to 10,000 g / mol, and particularly preferably from 1000 to 5000 g / mol, be preferred.

Also suitable are copolymeric polycarboxylates, in particular those of acrylic acid with methacrylic acid and acrylic acid or methacrylic acid with maleic acid. To improve water solubility, the polymers can also contain allyl sulfonic acids, such as allyloxybenzene sulfonic acid and methallyl sulfonic acid, as a monomer.

In various embodiments of the invention, the composition contains no other builders or builders apart from the above-mentioned builders from the group of polycarboxylates. In some embodiments, the composition may also be devoid of builders. In general, the compositions of the invention are also preferably free of bleach, such as is used in automatic dishwashing detergents.

All enzymes that can develop a catalytic activity in the agent according to the invention can also be used, in particular a protease, amylase, lipase, cutinase, cellulase, hemicellulase, mannanase, tannase, xylanase, xanthanase, xyloglucanase, β-glucosidase, pectinase, carrageenase, perhydrolase , oxidase, or oxidoreductase, and mixtures thereof.

The agent can contain enzymes in an amount of 1×10 ^-8 to 5% by weight, based on active protein, in particular in an amount of 1×10 ^-7 to 3% by weight, from 0.00001 to 1% by weight, from 0.00005 to 0.5% by weight, from 0.0001 to 0.1% by weight and more preferably from 0.0001 to 0.05% by weight, each based on the Total weight of agent and based on active protein.

In the present invention, an organic solvent may optionally be present. Within the scope of the teaching according to the invention, the solvent is used as required, in particular as a hydrotrope, viscosity regulator and/or additional cold stabilizer. It has a solubilizing effect, in particular for surfactants and optionally present electrolytes as well as perfume and dye, and thus contributes to their incorporation, prevents the formation of liquid-crystalline phases and contributes to the formation of clear products.

Preferred organic solvents come from the group of monohydric or polyhydric alcohols, alkanolamines or glycol ethers. The solvents are preferably selected from ethanol, n- or i-propanol, butanol, glycol, propane or butanediol, glycerol, diglycol, propyl or butyl diglycol, hexylene glycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether , propylene glycol methyl, ethyl or propyl ether, dipropylene glycol methyl or ethyl ether, methoxy, ethoxy or butoxytriglycol, 1-butoxyethoxy-2-propanol, 3-methyl-3-methoxybutanol, propylene glycol t-butyl ether and mixtures of these Solvent. The proportion by weight of these organic solvents in the total weight of agents according to the invention is preferably 0.1 to 10% by weight, preferably 0.2 to 8.0% by weight and in particular 0.5 to 7.0% by weight.

Particularly preferred organic solvents are glycerol and 1,2-propylene glycol.

Suitable organic solvents are also, for example, saturated or unsaturated, preferably saturated, branched or unbranched C _1-20 hydrocarbons, preferably C _2-15 hydrocarbons, with at least one hydroxyl group and optionally one or more ether functions COC, i.e. oxygen atoms interrupting the carbon atom chain.

Preferred organic solvents are the 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 groups per molecule, optionally etherified at one end with a C _1-6 alkanol the C _1-6 alcohols, preferably ethanol, n-propanol or iso-propanol, in particular ethanol.

Particularly preferred solvents are the poly-C _2-3 alkylene glycol ethers etherified at one end with a C _1-6 alkanol and having an average of 1 to 9, preferably 2 to 3, ethylene or propylene glycol groups, for example PPG-2 methyl ether (dipropylene glycol monomethyl ether).

In addition to the solvents described above, alkanolamines, for example, can also be used as solubilizers, in particular for perfumes and dyes that are optionally present.

Polymers suitable as additives are in particular maleic acid-acrylic acid copolymer Na salt (for example the commercially available Sokalan® CP 5 from BASF, Ludwigshafen (Germany)), modified polyacrylic acid Na salt (for example the commercially available Sokalan® CP 10 of BASF, Ludwigshafen (Germany)), modified polycarboxylate sodium salt (for example the commercially available Sokalan® HP 25 from BASF, Ludwigshafen (Germany)), polyalkylene oxide, modified heptamethyltrisiloxane (for example the commercially available Silwet® L-77 from the company BASF, Ludwigshafen (Germany)), polyalkylene oxide, modified heptamethyltrisiloxane (for example the commercially available Silwet® L-7608 from BASF, Ludwigshafen (Germany)) and polyethersiloxanes (copolymers of polymethylsiloxanes with ethylene oxide/propylene oxide segments (polyether blocks)), preferably water-soluble linear ones Polyethersiloxanes with terminal polyether blocks like the commercially available compounds Tegopren® 5840, Tegopren® 5843, Tegopren® 5847, Tegopren® 5851, Tegopren® 5863 or Tegopren® 5878 from Evonik, Essen (Germany). In a particular embodiment of the invention, the polymers mentioned are omitted.

Polymer thickeners, which can also be contained in the dishwashing detergent, are the polyelectrolytes, which have a thickening effect, polycarboxylates, preferably homo- and copolymers of acrylic acid, in particular acrylic acid copolymers such as acrylic acid-methacrylic acid copolymers, and the polysaccharides, in particular heteropolysaccharides, and other customary thickening agents polymers. Suitable polysaccharides or heteropolysaccharides are the polysaccharide gums, for example gum arabic, agar, alginates, carrageenans and their salts, guar, guar gum, tragacant, gellan, ramsan, dextran or xanthan and their derivatives, for example propoxylated guar, and their mixtures. Other polysaccharide thickeners, such as starches or cellulose derivatives, can be used as an alternative, but preferably in addition to a polysaccharide gum, for example starches of various origins and starch derivatives, for example hydroxyethyl starch, starch phosphate esters or starch acetates, or carboxymethyl cellulose or its sodium salt, methyl, ethyl, hydroxyethyl, hydroxypropyl -, Hydroxypropylmethyl- or Hydroxyethyl-methylcellulose or cellulose acetate.

A preferred polymeric thickening agent is the microbial anionic heteropolysaccharide xanthan gum, which is produced by Xanthomonas campestris and some other species under aerobic conditions with a molecular weight of 2-15×10 ⁶ and is available, for example, from Kelco under the trade name Keltrol®. for example as a cream-colored powder Keltrol® T (Transparent) or as white granules Keltrol® RD (Readily Dispersable).

Acrylic acid polymers suitable as polymeric thickeners are, for example, high molecular weight homopolymers of acrylic acid crosslinked with a polyalkenyl polyether, in particular an allyl ether of sucrose, pentaerythritol or propylene (INCI: carbomer), which are also referred to as carboxyvinyl polymers. Such polyacrylic acids are available, inter alia, from BFGoodrich under the trade name Carbopol®, for example Carbopol® 940 (molecular weight M _w approx. 4,000,000 g/mol), Carbopol® 941 (molecular weight M _w approx. 1,250,000 g/mol) or Carbopol® 934 (molecular weight M _w approx. 3,000,000 g/mol).

However, particularly suitable polymeric thickeners are the following acrylic acid copolymers: (i) Copolymers of two or more monomers from the group consisting of acrylic acid, methacrylic acid and their simple esters, preferably formed with C _1-4 alkanols (INCI: acrylates copolymer). which include the copolymers of methacrylic acid, butyl acrylate and methyl methacrylate (CAS 25035-69-2) or of butyl acrylate and methyl methacrylate (CAS 25852-37-3) and which, for example, from Rohm & Haas under the trade names Aculyn® and Acusol® are available, for example the anionic non-associative polymers Aculyn® 33 (crosslinked), Acusol® 810 and Acusol® 830 (CAS 25852-37-3); (ii) crosslinked high molecular weight acrylic acid copolymers, which include, for example, the copolymers crosslinked with an allyl ether of sucrose or pentaerythritol of C _10-30 -alkyl acrylates with one or more monomers from the group of acrylic acid, methacrylic acid and their simple, preferably with C _1-4 -Alkanols, esters (INCI Acrylates/C _10-30 Alkyl Acrylate Crosspolymer) belong and which are available, for example, from BFGoodrich under the trade name Carbopol®, for example the hydrophobic Carbopol® ETD2623 and Carbopol®1382 (INCI: Acrylates/C ₁₀₃₀ Alkyl Acrylate Crosspolymer) and Carbopol® AQUA 30 (formerly Carbopol® EX 473).

The content of polymeric thickener is usually not more than 8% by weight, preferably between 0.1 and 7% by weight, particularly preferably between 0.5 and 6% by weight. In a particularly preferred embodiment of the invention, the cleaning agent is free from polymeric thickeners.

The agent according to the invention can contain one or more water-soluble salts to reduce the viscosity. These can be inorganic and/or organic salts; in a preferred embodiment, the agent contains at least one inorganic salt.

Inorganic salts that can be used according to the invention are preferably selected from the group consisting of colorless, water-soluble halides, sulfates, sulfites, carbonates, hydrogen carbonates, nitrates, nitrites, phosphates and/or oxides of alkali metals, alkaline earth metals, aluminum and/or transition metals; ammonium salts can also be used. Halides and sulfates of the alkali metals are particularly preferred; the inorganic salt is therefore preferably selected from the group consisting of sodium chloride, potassium chloride, sodium sulfate, potassium sulfate and mixtures thereof. Sodium chloride is particularly preferred.

In preferred embodiments, the hand dishwashing detergents according to the invention are phosphate-free and/or phosphonate-free.

The organic salts that can be used according to the invention are, in particular, colorless, water-soluble alkali metal, alkaline earth metal, ammonium, aluminum and/or transition metal salts of carboxylic acids, including dicarboxylic acids. The salts are preferably selected from the group consisting of formate, acetate, propionate, citrate, malate, maleate, tartrate, succinate, malonate, oxalate, lactate, fumarate, adipate, succinate, glutarate, methylglycine diacetic acid trisodium salt and mixtures thereof.

The detergent according to the invention can contain 1 to 10% by weight, preferably 2 to 8% by weight, of at least one water-soluble salt. In a particularly preferred embodiment, only inorganic salts are used, in particular sodium chloride or magnesium sulfate.

Other additives customary in hand dishwashing detergents include, in particular, UV stabilizers, perfume, pearlescent agents (INCI: Opacifying Agents; for example glycol distearate, for example the commercially available Cutina® AGS from BASF, or mixtures containing this, for example the commercially available Euperlane® from BASF), dyes, Corrosion inhibitors, preservatives (e.g. the technical 2-bromo-2-nitropropane-1,3-diol (CAS 52-51-7), also known as bronopol), disinfectants, pH adjusters, in particular NaOH, KOH and buffer substances, and skin feel improvers or care additives (e.g. dermatologically active substances such as vitamin A, vitamin B2, vitamin B12, vitamin C, vitamin E, D-panthenol, sericerin, collagen partial hydrolyzate, various vegetable protein partial hydrolysates, protein hydrolyzate fatty acid condensates, liposomes , cholesterol, vegetable and animal oils such as lecithin, so jaöl, etc., plant extracts such as aloe vera, azulene, witch hazel extracts, algae extracts, etc., allantoin, A.H.A. complexes). The aforementioned additives can be present in hand dishwashing detergents according to the invention in amounts of up to 10% by weight, usually not more than 5% by weight.

In a preferred embodiment, the agent according to the invention contains at least one perfume and/or at least one fragrance. All perfumes and/or fragrances known to the person skilled in the art can be used, with the proviso that they essentially do not adversely affect the properties of the dishwashing detergent.

The hand dishwashing detergent can be applied undiluted or as an aqueous dilution either directly or, for example, by means of a sponge or a brush to the surface to be cleaned, optionally left to act and then removed again with water. The agent according to the present invention is used for cleaning surfaces, preferably hard surfaces, in particular crockery, cutlery and cooking utensils. A hand dishwashing detergent according to the invention exhibits improved cleaning performance compared with the prior art, particularly on greasy and/or oily soiling.

A further object of the present invention is accordingly also methods for manual cleaning of surfaces, preferably hard surfaces, in particular crockery, cutlery and cooking utensils, in which an agent according to the invention is used in at least one method step.

Furthermore, the invention also covers the use of the agent described herein for removing soiling, in particular greasy and/or oily soiling.

All facts, objects and embodiments that are described for means according to the invention are also applicable to the use according to the invention. Therefore, at this point, reference is expressly made to the disclosure at the appropriate point, with the indication that this disclosure also applies to the uses according to the invention.

The invention is illustrated below using examples, but is not limited to these.

examples

Example 1: Hand dishwashing detergent formulations

Table 1 reference 1 reference 2 example 1 example 2 ingredients % active content % active content % active content lauryl ether sulfate, Na salt 8.9 8.6 8.9 6.8 Betaine (Tegobetaine C60) 3.6 3.4 3.6 2.7 Appleclean 6781 - - 0.5 0.5 APG 0.5 - - - Perfume 0.1 0.1 0.1 0.1 citric acid 0.3 0.3 0.4 0.3 NaCl 1.2 1.2 0.5 1.2 Well benzoate 0.5 0.5 0.5 0.5 water to 100 to 100 to 100 to 100 PH value 4.5 4.5 4.6 4.6 Viscosity, 20°C 1790 1800 1870 1835 Appyclean 6781: oligomeric C8-10 alkyl glycosides based on D-pentose and D-glucose
APG: oligomeric alkyl glycosides based on D-glucose

The formulations mentioned above were examined for their cleaning performance and foam stability. The following results were obtained: reference 1 reference 2 example 1 example 2 cleaning performance 28 - 28.5 25 foam stability 199 179 196 179

It was found that the composition according to the invention (Example 1) largely corresponds to reference composition 1, which contains APG, in terms of cleaning performance and foam stability, i.e. the surfactants used according to the invention as a substitute for known APGs deliver the same cleaning and foam performance while at the same time providing greatly improved sustainability . In addition, the compositions according to the invention (example 2) show a foam stability comparable to reference 2, which contains neither APG nor other sugar surfactants, with a significantly reduced total surfactant content, which further improves sustainability.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• WO 2008/046778 A1 [0042, 0044]

Claims (10)

Hand dishwashing detergents containing at least one sugar surfactant selected from C _8-10 -alkyl polyglycosides. The hand dishwashing detergent according to claim 1 , characterized in that the C _8-10 -alkylpolyglycosides contain at least one pentose unit. The hand dishwashing detergent according to claim 1 or 2 , characterized in that the C _8-10 -alkylpolyglycosides are oligomeric C ₈ - and C ₁₀ -alkylglycosides which contain at least one D-pentose and at least one D-glucose unit or are mixtures of such compounds. The hand dishwashing detergent according to any one of Claims 1 until 3 , characterized in that the C _8-10 -alkylpolyglycosides are contained in the composition in an amount of 0.05 to 20% by weight, in particular 0.1 to 15% by weight, in each case based on the total weight of the composition. The hand dishwashing detergent according to any one of Claims 1 until 4 , characterized in that the agent contains at least one anionic surfactant, in particular a fatty alcohol ether sulfate, and/or at least one amphoteric or zwitterionic surfactant, in particular a betaine. The hand dishwashing detergent according to claim 5 , characterized in that (1) the at least one anionic surfactant, in particular the fatty alcohol ether sulfate, in an amount of 3 to 50% by weight, in particular from 5 to 20% by weight, based in each case on the total weight of the hand dishwashing detergent, in this is included; and/or (2) the at least one amphoteric or zwitterionic surfactant, in particular the betaine, in an amount of from 1 to 40% by weight, in particular from 2 to 15% by weight, in each case based on the total weight of the hand dishwashing detergent is included. The hand dishwashing detergent according to any one of Claims 1 until 6 , characterized in that it contains water, preferably in an amount of about 0.01 to about 98% by weight, preferably in an amount of about 1 to about 95% by weight, more preferably in an amount of about 5 to about 90% by weight, most preferably in an amount of from about 10% to about 87% by weight, based on the total weight of the hand dishwashing detergent composition. The hand dishwashing detergent according to any one of Claims 1 until 7 , characterized in that it contains at least one other ingredient selected from the group consisting of builders, enzymes, organic solvents, perfumes, fragrances, dyes, pearlescent agents, UV stabilizers, corrosion inhibitors, chelators, disinfectants, pH adjusters and preservatives, additives for Improvement of the sagging and drying behavior, additives for adjusting the viscosity and for stabilization, additives that improve and/or care for the skin feel, and mixtures thereof. Use of a hand dishwashing detergent according to any of Claims 1 until 8th for cleaning surfaces, preferably hard surfaces, especially crockery, cutlery and cooking utensils. Method for manual cleaning of surfaces, preferably hard surfaces, in particular crockery, cutlery and cooking utensils, characterized in that in at least one step a hand dishwashing detergent according to one of Claims 1 until 8th is applied.