Liquid hand dishwashing detergent composition

Abstract

To provide a liquid detergent composition which provides for both effective cleaning, as well as enhanced foaming, while not aggravating skin dryness.SOLUTION: There is provided a liquid hand dishwashing detergent composition which is met by formulating the composition with a surfactant system which comprises alkyl sulfated anionic surfactant having little or no alkoxylation and an amphoteric and / or zwitterionic co-surfactant, in combination with a sugar, a sugar alcohol, or a mixture thereof.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present disclosure relates to liquid hand dishwashing detergent compositions that provide good grease cleaning and foaming while not exacerbating skin dryness. [Background technology]

[0002] Dishwashing detergents should provide excellent cleaning performance and powerful foaming. It has been observed that even if a detergent composition effectively removes soils, a reduced foaming level is perceived as insufficient cleaning. This is mainly due to the general consumer belief that a rich and "thick" foam indicates a high cleaning effect.

[0003] Anionic surfactants are typically used in combination with co-surfactants, especially amphoteric and zwitterionic co-surfactants such as amine oxides and betaines, to provide foam during dishwashing, and it has been found that alkyl sulfates and alkyl alkoxy sulfates are particularly effective in providing improved foaming in addition to desired cleaning.Compared with the alkyl sulfated anionic surfactants that have little or no alkoxylation, detergent compositions generally have higher foaming and more effective grease removal than the compositions that contain the alkyl alkoxylated anionic surfactants with higher alkoxylation degree.However, it has been found that these anionic surfactants leave hands feeling dry after dishwashing.

[0004] Thus, there remains a need for liquid detergent compositions containing alkyl sulfated anionic surfactants with little or no alkoxylation that provide both effective cleaning and enhanced foaming without exacerbating skin dryness.

[0005] WO 2010 / 088165 describes a liquid hand dishwashing detergent composition comprising a cationic polymer and a humectant, a method of cleaning dishes with a liquid hand dishwashing detergent composition comprising a cationic polymer and a humectant, and a method of providing skin hydration and / or moisturization in connection with hand dishwashing operations.

[0006] WO 2010 / 088164 describes a liquid hand dishwashing detergent composition comprising a protease and a moisturizer, a method of cleaning dishes with a liquid hand dishwashing detergent composition comprising a protease and a moisturizer, and a method of providing skin hydration and / or moisturization in connection with a hand dishwashing operation.

[0007] WO 2010 / 088159 describes a hand dishwashing detergent composition containing a moisturizing agent and a pearlizing agent to provide excellent grease cleaning and mildness to hands.

[0008] WO 2010 / 088162 describes a hand dishwashing detergent composition comprising a cationic polymer and a pearlescent agent, and optionally a moisturizing agent, to provide excellent grease cleaning and mildness to hands.

[0009] WO 2010 / 088163 describes a liquid hand dishwashing detergent composition comprising a cationic polymer and a protease, a method of cleaning dishes with a liquid hand dishwashing detergent composition comprising a cationic polymer and a protease, and a method of providing skin hydration and / or moisturization in connection with a hand dishwashing operation.

[0010] WO 2010 / 088161 describes a hand dishwashing detergent composition comprising a protease and a pearlizing agent, and optionally a moisturizing agent, to provide excellent grease cleaning and mildness to hands.

[0011] WO 2012 / 116471 describes a method of manually washing dishes using a liquid hand dish detergent composition comprising an anionic surfactant, a cationic polymer having a MW of 2,100,000 or less and a charge density of 0.45 meq / g or more, and optionally a moisturizer, such composition having a coacervation index of at least 2.5% upon dilution and providing skin care. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] International Publication No. 2010 / 088165 [Patent Document 2] International Publication No. 2010 / 088164 [Patent Document 3] International Publication No. 2010 / 088159 [Patent Document 4] International Publication No. 2010 / 088162 [Patent Document 5] International Publication No. 2010 / 088163 [Patent Document 6] International Publication No. 2010 / 088161 [Patent Document 7] International Publication No. 2012 / 116471 Summary of the Invention [Means for solving the problem]

[0013] The present disclosure relates to liquid hand dish detergent compositions comprising from 5% to 50%, by weight of the composition, of a surfactant system comprising: an anionic surfactant, the anionic surfactant comprising an alkyl sulfated anionic surfactant, the alkyl sulfated anionic surfactant having an average degree of alkoxylation of less than 0.25; and a co-surfactant selected from the group consisting of amphoteric surfactants, zwitterionic surfactants, and mixtures thereof; and the composition further comprising from 0.1% to 10%, by weight of the composition, of a sugar, sugar alcohol, or mixtures thereof. DETAILED DESCRIPTION OF THE INVENTION

[0014] In accordance with the present disclosure, by formulating a liquid hand dishwashing detergent composition to include an alkyl sulfated anionic surfactant with little or no alkoxylation and a sugar, sugar alcohol, or mixtures thereof, a composition with effective cleaning and foaming without exacerbating skin dryness has been provided. It has been found that formulating such a composition with an amine oxide amphoteric co-surfactant further improves foaming and additionally improves soil removal.

[0015] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. Thus, for example, "a material" may include one or more materials.

[0016] As used herein, the term "comprising" means that steps and ingredients other than those specifically mentioned can be added. This term encompasses the terms "consisting of" and "consisting essentially of." The compositions of the present disclosure can include, consist of, and consist essentially of the essential elements and limitations of the compositions described herein, as well as any additional or optional ingredients, components, steps, or limitations described herein.

[0017] As used herein, the term "tableware" includes, by way of non-limiting example, cookware and tableware made from ceramic, china, metal, glass, plastic (e.g., polyethylene, polypropylene, polystyrene, etc.), and wood.

[0018] As used herein, the terms "oil" or "oleaginous" mean that the material comprises, at least in part (i.e., at least 0.5% by weight of the oil in the material), saturated and unsaturated fats and oils, preferably oils and fats derived from animal sources such as beef, pork, and / or chicken.

[0019] The term "include / includes / including" is meant to be non-limiting.

[0020] As used herein, the term "particulate soil" means inorganic and especially organic solid soil particles, especially food particles, non-limiting examples of which include ultrafine particulate elemental carbon, baked grease particles, and meat particles.

[0021] As used herein, the term "suds profile" refers to a characteristic of a composition with respect to foaming characteristics during the dishwashing process. The term "suds profile" of a composition includes the initial foam volume generated upon dissolving and stirring the composition in an aqueous washing solution, typically by hand stirring, and the retention of foam during the dishwashing process. Preferably, hand dishwashing compositions characterized as having a "good suds profile" tend to have high initial and / or sustained foam volumes, particularly throughout a significant portion or the entire hand dishwashing process. This is important because consumers use foam size as an indicator that sufficient composition has been dispensed. Furthermore, consumers also use sustained foam volume, even toward the end of the dishwashing process, as an indicator that sufficient active cleaning ingredients (e.g., surfactants) are present. Consumers typically refresh their washing solutions when suds become low. Thus, low-sudsing compositions tend to be replaced by consumers more frequently than necessary due to their low foam levels.

[0022] "Easy rinse" or "easy rinse profile" means that suds generated during the main wash cycle can be rinsed away faster and less water can be used to collapse suds from the main wash cycle. Faster collapse of suds is preferred because it reduces the amount of time spent rinsing and overall cleaning time. Reducing the amount of water used to collapse suds is preferred because it helps conserve water.

[0023] It will be understood that the test methods disclosed in the Test Methods section of this application must be used to determine the values ​​of each of the parameters of Applicants' compositions described and claimed herein.

[0024] Unless specifically stated otherwise, as is clear from the context, all percentages are by weight of the total composition. Unless specifically stated otherwise, all ratios are by weight, and all measurements are made at 25°C unless otherwise specified.

[0025] Liquid dishwashing detergent composition The present composition is a liquid composition for hand dishwashing, and therefore is in liquid form. The liquid hand dishwashing composition is preferably an aqueous composition. Thus, the composition may contain 50% to 85% by weight, preferably 50% to 75% by weight, of water based on the total weight of the composition.

[0026] The composition may have a pH of 6.0 or greater, or a pH of 6.0 to 12.0, preferably a pH of 7.0 to 11.0, more preferably a pH of 7.5 to 10.0, measured as a 10% aqueous solution in demineralized water at 20°C.

[0027] The compositions of the present disclosure typically contain 0.1 s -1 ~100s -1 The composition may be Newtonian or non-Newtonian, preferably Newtonian, over a range of shear rates of use that is between 10 mPa·s and 10,000 mPa·s, preferably between 100 mPa·s and 5,000 mPa·s, more preferably between 300 mPa·s and 2,000 mPa·s, or most preferably between 500 mPa·s and 1,500 mPa·s, or alternatively a combination thereof, over a typical range of shear rates of use.

[0028] surfactant system The liquid composition comprises from 5.0% to 50% by weight, preferably from 6.0% to 40% by weight, most preferably from 15% to 35% by weight of the surfactant system, based on the weight of the total composition.

[0029] Anionic surfactants The surfactant system comprises an anionic surfactant. The surfactant system may comprise at least 40% by weight of the surfactant system, preferably 50% to 90% by weight, and more preferably 65% ​​to 85% by weight of the anionic surfactant. The surfactant system preferably does not contain fatty acids or salts thereof, as such fatty acids inhibit foam generation. In some embodiments, the composition may be substantially free, essentially free, or free of fatty acids or derivatives thereof.

[0030] Suitable anionic surfactants may be selected from the group consisting of alkyl sulfate surfactants, alkyl alkoxy sulfate surfactants, alkyl sulfonate surfactants, alkyl sulfosuccinate and dialkyl sulfosuccinate ester surfactants, and mixtures thereof.

[0031] The anionic surfactant can comprise at least 70%, preferably at least 85%, and more preferably 100% by weight of the anionic surfactant that is an alkyl sulfate anionic surfactant, an alkyl alkoxy sulfate anionic surfactant, or a mixture thereof.

[0032] To provide a combination of improved grease removal and enhanced cleaning speed, the molar average alkyl chain length of the alkyl sulfate anionic surfactant or alkyl alkoxy sulfate anionic surfactant can be from 8 to 18, preferably from 10 to 14, more preferably from 12 to 14, and most preferably from 12 to 13 carbon atoms.

[0033] The alkyl chains of the alkyl sulfate anionic surfactant or alkyl alkoxy sulfate anionic surfactant can have a molar fraction of C12 chains to C13 chains of at least 50%, preferably at least 65%, more preferably at least 80%, and most preferably at least 90%. When the C13 / C12 molar ratio of the alkyl chains is at least 57 / 43, preferably 60 / 40 to 90 / 10, more preferably 60 / 40 to 80 / 20, and most preferably 60 / 40 to 70 / 30, foam persistence is particularly improved, especially in the presence of greasy soil, while foam persistence in the presence of particulate soil is not impaired.

[0034] The relative molar amounts of C13 alkyl chains and C12 alkyl chains in alkyl sulfate or alkyl alkoxy sulfate anionic surfactants can be derived from the surfactant's carbon chain length distribution. The carbon chain length distribution of alkyl chains in alkyl sulfate and alkyl alkoxy sulfate surfactants can be obtained from the technical data sheets of the surfactant or the alkyl alcohol supplier. Alternatively, the chain length distribution and average molecular weight of the aliphatic alcohol used to make the alkyl sulfate or alkyl alkoxy sulfate anionic surfactant can be determined by methods known in the art. Such methods include capillary gas chromatography with flame ionization detection on a medium-polarity capillary column using hexane as the solvent. The chain length distribution is based on the starting alcohol and alkoxylated alcohol. Therefore, the alkyl sulfate anionic surfactant must be hydrolyzed back to the corresponding alkyl alcohol and alkyl alkoxylated alcohol before analysis, for example, using hydrochloric acid.

[0035] The alkyl alkoxy sulfate surfactants have an average degree of alkoxylation of less than 0.25, preferably less than 0.1, and most preferably the alkyl sulfated anionic surfactants are free of alkoxylation. When alkoxylated, ethoxylation is preferred.

[0036] The average degree of alkoxylation is the molar average degree of alkoxylation of all alkyl sulfated anionic surfactants (i.e., the molar average degree of alkoxylation). Thus, when calculating the molar average degree of alkoxylation, the number of moles of non-alkoxylated alkyl sulfate anionic surfactants is included. Molar average degree of alkoxylation = (x1 * Alkoxylation degree of surfactant 1 + x2 * Alkoxylation degree of surfactant 2 +....) / (x1 + x2 +....) where x1, x2, ... are the number of moles of each alkyl (or alkoxy) sulfate anionic surfactant in the mixture, and the degree of alkoxylation is the number of alkoxy groups in each alkyl sulfate anionic surfactant.

[0037] The preferred alkyl alkoxy sulfates are alkyl ethoxy sulfates.

[0038] The alkyl sulfate anionic surfactants and alkyl alkoxy sulfate anionic surfactants may have a weight average degree of branching of at least 10%, preferably 20% to 60%, more preferably 30% to 50%. Alternatively, the alkyl sulfate anionic surfactants and alkyl alkoxy sulfate anionic surfactants may have a weight average degree of branching of less than 10%, and preferably the alkyl sulfate anionic surfactants and alkyl alkoxy sulfate anionic surfactants contain no branching.

[0039] The alkyl sulfate anionic surfactants and alkyl alkoxy sulfate anionic surfactants can contain at least 5%, preferably at least 10%, and most preferably at least 25% by weight of branching of the surfactant at the C2 position (measured by counting carbon atoms from the sulfate group for non-alkoxylated alkyl sulfate anionic surfactants and counting from the alkoxy group furthest from the sulfate group for alkoxylated alkyl sulfate anionic surfactants). More preferably, greater than 75%, and even more preferably greater than 90%, by weight of the total branched alkyls consist of C1-C5 alkyl moieties, preferably C1-C2 alkyl moieties. It has been found that formulating the compositions of the present invention using alkyl sulfate surfactants or alkyl alkoxy sulfate surfactants with the above branching levels improves low-temperature stability. Such compositions require less solvent to achieve good physical stability at low temperatures. Thus, the compositions can contain lower concentrations of organic solvent, such as less than 5.0% by weight of the liquid composition, while still having improved low-temperature stability. Higher surfactant branching also results in faster initial foam generation, but typically results in lower foam persistence. The weight average branching described herein has been found to provide improved low temperature stability, initial foam generation, and foam persistence.

[0040] The weight average degree of branching of the anionic surfactant mixture is calculated according to the following formula: Weight average branching degree (%) = [(x1 * Wt% of branched chain alcohol 1 in alcohol 1 + x2 * (wt% of branched-chain alcohol 2 in alcohol 2 + ....) / (x1 + x2 + ....)] × 100 can be calculated using where x1, x2, ... are the weights (in grams) of each alcohol in the total alcohol mixture used as a starting material, prior to (alkoxylation and) sulfation, to produce the alkyl(alkoxy) sulfate anionic surfactant. The weight average branching calculation includes the weight of the alkyl alcohol used to form the unbranched alkyl sulfated anionic surfactant.

[0041] The weight average degree of branching and branching distribution can usually be obtained from the technical data sheet of the surfactant or its constituent alkyl alcohol. Alternatively, branching can be determined through analytical methods known in the art, including capillary gas chromatography with flame ionization detection in a medium polarity capillary column using hexane as the solvent. The weight average degree of branching and branching distribution are based on the starting alcohol used to produce the alkyl sulfated anionic surfactant.

[0042] Suitable counterions include alkali metal cations, alkaline earth metal cations, alkanolammonium, or ammonium or substituted ammonium, preferably sodium.

[0043] Suitable examples of commercially available alkyl sulfated anionic surfactants include those derived from alcohols sold by Shell under the trade name Neodol® or by Sasol under the trade names Lial®, Isalchem®, and Safol®, or some of the natural alcohols produced by Procter & Gamble Chemicals. Based on the relative fractions of C13 and C12 in the starting alcohol, obtained from the technical data sheet from the supplier or by analysis using methods known in the art, alcohols can be blended to achieve the desired mole fractions of C12 and C13 chains and the desired C13 / C12 ratio.

[0044] Performance, including grease cleaning, foaming, low temperature stability, and viscosity of the final product, can be affected by the breadth of the alkoxylation distribution of the alkoxylated alkyl sulfate anionic surfactant. The alkoxylation distribution, including its breadth, can be varied through the selection of catalysts and process conditions when making the alkoxylated alkyl sulfate anionic surfactant.

[0045] Without being bound by theory, when ethoxylated alkyl sulfates are present, the amount of 1,4-dioxane by-product in the alkoxylated alkyl sulfates, particularly the ethoxylated alkyl sulfates, can be reduced by strictly controlling the process conditions and raw material composition during both the alkoxylation, particularly the ethoxylation step, and the sulfation step. Based on recent technological advances, further reduction of 1,4-dioxane by-products can be achieved by subsequent stripping, distillation, solvent evaporation, centrifugation, microwave irradiation, molecular sieving, or catalytic or enzymatic decomposition steps. Methods for controlling the 1,4-dioxane content in alkoxylated / ethoxylated alkyl sulfates are widely known in the art. Alternatively, the control of 1,4-dioxane levels in detergent formulations by adding 1,4-dioxane inhibitors such as 5,6-dihydro-3-(4-morpholinyl)-1-[4-(2-oxo-1-piperidinyl)-phenyl]-2-(1-H)-pyridone, the 3-alpha-hydroxy-7-oxo stereoisomeric mixture of cholanic acid, 3-(N-methylamino)-L-alanine, and mixtures thereof to formulations containing 1,4-dioxane has also been described in the art.

[0046] Anionic alkyl sulfonate or sulfonic acid surfactants suitable for use herein include alkyl benzene sulfonates, alkyl ester sulfonates, primary and secondary alkane sulfonates (such as paraffin sulfonates), alpha or internal olefin sulfonates, alkyl sulfonated (poly)carboxylic acids, and mixtures thereof, in acid and salt form. Suitable anionic sulfonate or sulfonic acid surfactants include C5-C20 alkyl benzene sulfonates, more preferably C10-C16 alkyl benzene sulfonates, more preferably C11-C13 alkyl benzene sulfonates, C5-C20 alkyl ester sulfonates, especially C5-C20 methyl ester sulfonates, C6-C22 primary or secondary alkane sulfonates, C5-C20 sulfonated (poly)carboxylic acids, and any mixtures thereof, but preferably C11-C13 alkyl benzene sulfonates. The surfactants can vary widely in their 2-phenyl isomer content. Compared to the sulfonation of alpha olefins, the sulfonation of internal olefins can occur at any position due to randomly positioned double bonds, resulting in a variety of twin-tail branched structures due to the hydrophilic sulfonate and hydroxyl groups of IOS being located in the middle of the alkyl chain. Alkanesulfonates include paraffin sulfonates and other secondary alkanesulfonates (such as Hostapur SAS60 from Clariant).

[0047] Alkyl sulfosuccinate and dialkyl sulfosuccinate esters are organic compounds having the formula MO3SCH(CO2R')CH2CO2R, where R and R' can be H or alkyl groups, and M is a counterion such as sodium (Na). The alkyl sulfosuccinate and dialkyl sulfosuccinate ester surfactants can be alkoxylated or non-alkoxylated, preferably non-alkoxylated. The surfactant system can contain additional anionic surfactants. However, the composition preferably contains less than 30% by weight, preferably less than 15% by weight, more preferably less than 10% by weight of the surfactant system of additional anionic surfactants. Most preferably, the surfactant system does not contain additional anionic surfactants, preferably anionic surfactants other than the alkyl sulfate anionic surfactant.

[0048] Co-surfactants To improve lathering and surfactant loading after dilution, and therefore improve lather persistence, the surfactant system may include a co-surfactant selected from the group consisting of amphoteric surfactants, zwitterionic surfactants, and mixtures thereof.

[0049] The weight ratio of the anionic surfactant to the co-surfactant can be 1:1 to 8:1, preferably 2:1 to 5:1, and more preferably 2.5:1 to 4:1. Compositions having this weight ratio of the anionic surfactant to the co-surfactant can have improved disruption of liposome bilayers.

[0050] The composition preferably comprises from 0.1% to 20%, more preferably from 0.5% to 15%, especially from 2% to 10% by weight of the composition of a co-surfactant.

[0051] The surfactant system of the compositions of the present disclosure preferably comprises up to 50% by weight of the surfactant system of a co-surfactant, preferably 10% to 40% by weight, more preferably 15% to 35% by weight.

[0052] The co-surfactant is preferably a zwitterionic co-surfactant, more preferably one selected from the group consisting of betaine surfactants.

[0053] Suitable betaine surfactants include alkyl betaines, alkylamido betaines, amidoazolinium betaines, sulfobetaines (INCI sultaines) and phosphobetaines, preferably satisfying formula (I): R1-[CO-X(CH2) n ] x -N + (R2)(R3)-(CH2) m -[CH(OH)-CH2] y -Y- In formula (I), R1 is selected from the group consisting of saturated or unsaturated C6-22 alkyl residues, preferably C8-C18 alkyl residues, more preferably saturated C10-C16 alkyl residues, and most preferably saturated C12-C14 alkyl residues; X is selected from the group consisting of NH, NR4 (wherein R4 is a C1-C4 alkyl residue), O and S; n is an integer of 1 to 10, preferably 2 to 5, and more preferably 3; x is 0 or 1, preferably 1; R2 and R3 are independently selected from the group consisting of C1-4 alkyl residues, substituted hydroxy such as hydroxyethyl, and mixtures thereof, preferably both R2 and R3 are methyl; m is an integer from 1 to 4, preferably 1, 2, or 3; y is 0 or 1, Y is selected from the group consisting of COO, SO3, OPO(OR5)O, or P(O)(OR5)O, where R5 is H or a C1-4 alkyl residue.

[0054] Preferred betaines are alkylbetaines of formula (Ia), alkylamidopropylbetaines of formula (Ib), sulfobetaines of formula (Ic) and amidosulfobetaines of formula (Id), R1-N +(CH3)2-CH2COO- (IIa) R1-CO-NH-(CH2)3-N + (CH3)2-CH2COO- (IIb) R1-N + (CH3)2-CH2CH(OH)CH2SO3 - (IIc) R1-CO-NH-(CH2)3-N + (CH3)2-CH2CH(OH)CH2SO3 - (IId) wherein R1 has the same meaning as in formula (I). Particularly preferred are carbobetaines of formulas (Ia) and (Ib) [i.e., Y=COO in formula (I)], and more preferred are alkylamidobetaines of formula (Ib).

[0055] Suitable betaines may be selected from the group consisting of capryl / capramidopropyl betaine, cetyl betaine, cetylamidopropyl betaine, cocamidoethyl betaine, cocamidopropyl betaine, coco betaine, decyl betaine, decylamidopropyl betaine, hydrogenated tallow betaine / amidopropyl betaine, isostearamidopropyl betaine, lauramidopropyl betaine, lauryl betaine, myristylamidopropyl betaine, myristyl betaine, oleadopropyl betaine, oleyl betaine, palmamidopropyl betaine, palmitamidopropyl betaine, palm kernelamidopropyl betaine, stearamidopropyl betaine, stearyl betaine, tallowamidopropyl betaine, tallow betaine, undecylenamidopropyl betaine, undecyl betaine, and mixtures thereof [or named according to INCI]. Preferred betaines are selected from the group consisting of cocamidopropyl betaine, cocobetaine, lauramidopropyl betaine, lauryl betaine, myristylamidopropyl betaine, myristyl betaine, and mixtures thereof, with cocamidopropyl betaine being particularly preferred.

[0056] Suitable and preferred amphoteric co-surfactants include amine oxide amphoteric surfactants. Amine oxide amphoteric surfactants can be linear or branched, with linear being preferred. Suitable linear amine oxides are typically water-soluble and characterized by the formula R1-N(R2)(R3)O, where R1 is a C8-C18 alkyl and the R2 and R3 moieties are selected from the group consisting of C1-C3 alkyl groups, C1-C3 hydroxyalkyl groups, and mixtures thereof. For example, R2 and R3 can be selected from the group consisting of methyl, ethyl, propyl, isopropyl, 2-hydroxyethyl, 2-hydroxypropyl, and 3-hydroxypropyl, and mixtures thereof, with one or both, preferably both, of R2 and R3 being methyl. Linear amine oxide surfactants can include, in particular, linear C10-C18 alkyl dimethyl amine oxides and linear C8-C12 alkoxyethyl dihydroxyethyl amine oxides.

[0057] Preferred amine oxide surfactants may be selected from the group consisting of alkyl dimethylamine oxides, alkylamidopropyl dimethylamine oxides, and mixtures thereof. Alkyl dimethylamine oxides, such as C8-C18 alkyl dimethylamine oxides or C10-C16 alkyl dimethylamine oxides (e.g., cocodimethylamine oxide), are particularly preferred. Suitable alkyl dimethylamine oxides include C10 alkyl dimethylamine oxide surfactants, C10-C12 alkyl dimethylamine oxide surfactants, C12-C14 alkyl dimethylamine oxide surfactants, or mixtures thereof. C12-C14 alkyl dimethylamine oxides are particularly preferred, and linear C12-C14 alkyl dimethylamine oxides are particularly preferred. Suitable linear C12-C14 alkyl dimethylamine oxide surfactants can be derived from natural alcohols, especially coconut oil-derived alcohols, or from synthetic alcohols by the Ziegler process.

[0058] Alternative suitable amine oxide surfactants include mid-branched amine oxide surfactants. As used herein, "mid-branched" means that the amine oxide has one alkyl moiety with n1 carbon atoms, and one alkyl branch in the alkyl moiety has n2 carbon atoms. The alkyl branch is located on the alpha carbon from the nitrogen on the alkyl moiety. This type of branching of amine oxides is also known in the art as internal amine oxides. The sum of n1 and n2 can be 10 to 24, preferably 12 to 20, and more preferably 10 to 16 carbon atoms. The number of carbon atoms in one alkyl moiety (n1) is preferably the same or similar to the number of carbon atoms in one alkyl branch (n2), thereby making the one alkyl moiety and the one alkyl branch symmetrical. As used herein, "symmetrical" means that in at least 50% by weight, more preferably at least 75% to 100% by weight of the mid-branched amine oxides used herein, |n1-n2| is 5 or less, preferably 4, and most preferably 0 to 4 carbon atoms. The amine oxide further comprises two moieties independently selected from a C1-3 alkyl, a C1-3 hydroxyalkyl group, or a polyethylene oxide group containing an average of about 1 to about 3 ethylene oxide groups. Preferably, these two moieties are selected from a C1-3 alkyl, and more preferably, both are selected as a C1 alkyl.

[0059] Alternatively, the amine oxide surfactant can be a mixture of amine oxides, including a mixture of low cut and mid cut amine oxides. Thus, the amine oxide of the composition of the present disclosure can be: a) about 10% to about 45% by weight of the amine oxide of a low cut amine oxide of the formula R1R2R3AO, wherein R1 and R2 are independently selected from hydrogen, C1-C4 alkyl, or mixtures thereof, and R3 is selected from C10 alkyl and mixtures thereof; b) 55% to 90% by weight of the amine oxide, a mid-cut amine oxide of formula R4R5R6AO, where R4 and R5 are independently selected from hydrogen, C1-C4 alkyl, or a mixture thereof, and R6 is selected from C12-C16 alkyl, or a mixture thereof.

[0060] In preferred low-cut amine oxides for use herein, R3 is n-decyl, and preferably both R1 and R2 are methyl. In mid-cut amine oxides of formula R4R5R6AO, preferably both R4 and R5 are methyl.

[0061] Preferably, the amine oxide comprises less than about 5% by weight of the amine oxide, more preferably less than 3% by weight of the amine oxide of formula R7R8R9AO, where R7 and R8 are selected from hydrogen, C1-C4 alkyl, and mixtures thereof, and R9 is selected from C8 alkyl and mixtures thereof. By limiting the amount of amine oxide of formula R7R8R9AO, both physical stability and foam persistence are improved.

[0062] Nonionic surfactants The surfactant system further comprises a nonionic surfactant. Suitable nonionic surfactants include alkoxylated alcohol nonionic surfactants, alkyl polyglucoside nonionic surfactants, and mixtures thereof, preferably alkoxylated nonionic surfactants.

[0063] Alkoxylated alcohol nonionic surfactants: When present, the surfactant system of the compositions of the present disclosure may comprise from 0.1% to 10%, preferably from 1.0% to 8.0%, more preferably from 2.0% to 5.0%, by weight of the detergent composition of an alkoxylated alcohol nonionic surfactant.

[0064] Preferably, the alkoxylated alcohol nonionic surfactant is a linear or branched primary or secondary alkyl alkoxylated nonionic surfactant, preferably an alkyl ethoxylated nonionic surfactant, preferably containing an average of 9 to 15, preferably 10 to 14 carbon atoms in the alkyl chain and an average of 5 to 12, preferably 6 to 10, most preferably 7 to 8, units of ethylene oxide per mole of alcohol.

[0065] Alkyl polyglucoside nonionic surfactants: If present, the alkyl polyglucoside may be present in the surfactant system at a concentration of 0.1% to 10%, preferably 2.0% to 9.0%, more preferably 4.0% to 8.0% by weight of the detergent composition. Alkyl polyglucoside nonionic surfactants typically have higher sudsing than other nonionic surfactants, such as alkyl ethoxylated alcohols.

[0066] The combination of alkyl polyglucosides with anionic surfactants, particularly alkyl sulfate anionic surfactants, has been found to improve polymeric grease removal, foam persistence, reduced viscosity change with surfactant and / or system changes, and more persistent Newtonian rheology.

[0067] The alkyl polyglucoside surfactant can be selected from C6 to C18 alkyl polyglucoside surfactants. The alkyl polyglucoside surfactant can have a number average degree of polymerization of 0.1 to 3.0, preferably 1.0 to 2.0, more preferably 1.2 to 1.6. The alkyl polyglucoside surfactant can include a blend of short-chain alkyl polyglucoside surfactants having alkyl chains containing 10 or fewer carbon atoms and medium- to long-chain alkyl polyglucoside surfactants having alkyl chains containing more than 10 carbon atoms to 18 carbon atoms, preferably 12 to 14 carbon atoms.

[0068] Short-chain alkyl polyglucoside surfactants have a unimodal chain length distribution of C8 to C10, medium- to long-chain alkyl polyglucoside surfactants have a unimodal chain length distribution of C10 to C18, while medium-chain alkyl polyglucoside surfactants have a unimodal chain length distribution of C12 to C14. In contrast, C8 to C18 alkyl polyglucoside surfactants typically have a unimodal distribution of C8 to C18 alkyl chains, such as C8 to C16. Thus, a combination of a short-chain alkyl polyglucoside surfactant with a medium- to long-chain or medium-chain alkyl polyglucoside surfactant will have a broader chain length distribution, or even a bimodal distribution, than the unblended C8 to C18 alkyl polyglucoside surfactant. Preferably, the weight ratio of short-chain alkyl polyglucoside surfactant to long-chain alkyl polyglucoside surfactant is from 1:1 to 10:1, preferably from 1.5:1 to 5:1, more preferably from 2:1 to 4:1. Such blends of short-chain alkyl polyglucoside surfactant and long-chain alkyl polyglucoside surfactant have been found to result in faster dissolution of the detergent solution in water and improved initial foaming combined with improved foam stability.

[0069] C8-C16 alkyl polyglycosides are commercially available from several sources (e.g., Simusol® surfactants from Seppic Corporation; and Glucopon® 600 CSUP, Glucopon® 650 EC, Glucopon® 600 CSUP / MB, and Glucopon® 650 EC / MB from BASF Corporation). Glucopon® 215UP is a preferred short-chain APG surfactant. Glucopon® 600CSUP is a preferred medium- to long-chain APG surfactant.

[0070] Sugars - sugar alcohols; The liquid dishwashing detergent composition contains 0.1% to 10% by weight, preferably 0.5% to 7.5% by weight, more preferably 1.0% to 5.0% by weight of a sugar, sugar alcohol, or a mixture thereof, based on the weight of the liquid dishwashing detergent composition.

[0071] Sugar alcohols are defined as polyhydric alcohols containing one hydroxyl group attached to each carbon atom. Typically, sugar alcohols can be derived from sugars. Sugar alcohols have the general formula HOCH2(CHOH) n CHOH, where n is preferably 0 to 4, more preferably 1 to 4, and most preferably n is equal to 1. In contrast, sugars have two fewer hydrogen atoms, e.g., HOCH(CHOH). n CHO or HOCH2(CHOH) n-1C(O)CHOH. Like their parent sugars, sugar alcohols exist in a variety of chain lengths. Sugar is a general term that includes monosaccharides and disaccharides. Examples of monosaccharides include glucose, fructose, and galactose. Examples of disaccharides include sucrose, lactose, and maltose. Longer chains of monosaccharides, for example, containing more than two monosaccharide units, are not considered sugars but are called oligosaccharides or polysaccharides and are outside the scope of this disclosure. The sugar is preferably selected from trehalose, glucose, fructose, galactose, sucrose, lactose, maltose, rhamnose, ribose, and mixtures thereof, preferably trehalose. The sugar alcohol is preferably selected from the group consisting of ethylene glycol, glycerol, sorbitol, erythritol, threitol, arabitol, ribitol, galactitol, fucitol, iditol, inositol, xylitol, mannitol, maltitol, isomalt, volemitol, lactitol, maltotriitol, maltotetritoitol, polyglycitol, or a mixture thereof, preferably glycerol, sorbitol, and a mixture thereof, and most preferably glycerol. These sugar alcohols differ in the carbon chain length and the relative orientation of the OH groups (e.g., stereoisomers). Most preferably, the liquid hand dishwashing detergent composition comprises a sugar alcohol, most preferably glycerol.

[0072] The surfactant system and the sugar, sugar alcohol, or mixture thereof are preferably present in a weight ratio of 20:1 to 1:1, preferably 15:1 to 3:1, and most preferably 10:1 to 5:1. The alkyl sulfated anionic surfactant and the sugar, sugar alcohol, or mixture thereof are present in a weight ratio of 1:1 to 15:1, preferably 2:1 to 10:1, and more preferably 3:1 to 8:1. Suitable sugars and sugar alcohols are commercially available from Sigma-Aldrich or Merck. In some embodiments, the composition is substantially free, essentially free, or free of sugar esters.

[0073] Quaternized Acrylic Copolymer Liquid hand dish detergents may optionally contain a quaternized acrylic copolymer. As used herein, "copolymer" refers to a polymer containing at least two different monomer compositions. The quaternized polymer has the structure NR4 + where R is an alkyl or aryl group. + ) and primary, secondary, or tertiary ammonium cations, quaternary ammonium cations are permanently charged regardless of the pH of their solution.

[0074] The composition preferably comprises from 0.01% to 5.0%, preferably from 0.05% to 2.0%, more preferably from 0.1% to 1.0% by weight of the composition of the quaternized acrylic copolymer.

[0075] The quaternized acrylic copolymer can have a weight average molecular weight (Mw) as measured by aqueous gel permeation chromatography (GPC) with light scattering detection (SEC-MALLS) in the range of 5,000 to 500,000 Da, preferably 15,000 to 300,000 Da, and even more preferably 25,000 to 75,000 Da.

[0076] The quaternized acrylic copolymer can be characterized by its cationic charge density, typically expressed as milliequivalents of charge per gram (mEq / g). The quaternized acrylic copolymer can have an average cationic charge density of 0.01 to 2.8, preferably 0.1 to 2.75, and more preferably 0.75 to 2.25 mEq / g.

[0077] Preferably, the different types of monomer units are randomly distributed throughout the quaternized acrylic copolymer.

[0078] The quaternized acrylic copolymer is preferably derived from cationic and ethylenically unsaturated monomer units.

[0079] The cationic monomer units may be selected from: CH2=CR 1 -Y-(CH2) n -N + R 2 R 3 R 4 X - (a) During the ceremony, Each R 1 are independently selected from hydrogen or methyl, preferably methyl; Each R 2 are independently selected from C1-C4 alkyl(ene), preferably CH2CH=CH2 or methyl, more preferably methyl; Each R 3 , R 4 are independently selected from C1 to C4 alkyl, preferably C1 to C3 alkyl, more preferably methyl; each Y independently represents CO-NR 5 -(CH2) n , CO-O-(CH2) n , or (CH2) n , preferably CO-NR 5 -(CH2) n or (CH2) n , more preferably CO-NR 5 -(CH2) n is a linking group selected from During the ceremony, Each R 5 are independently selected from hydrogen or methyl, preferably hydrogen; n is an average of 1 to 4, preferably 1 or 3, more preferably 3; X - is a suitable counterion, preferably X - are independently a halide counterion, more preferably Cl - is selected from.

[0080] The choice of linking group Y depends on the reaction scheme used to make the quaternized acrylic copolymer. Preferably, all Y are the same. Preferably, all R 5 are the same.

[0081] The cationic monomer unit can be selected from the group consisting of acrylamidopropyl trimethylammonium chloride (APTAC), methacrylamidopropyl trimethylammonium chloride (MAPTAC), diallyl dimethyl ammonium chloride (DADMAC), acryloyloxyethyltrimethylammonium chloride (AETAC), methyloyloxyethyltrimethylammonium chloride (METAC), and mixtures thereof. Particularly preferred cationic monomers are (meth)acrylamidopropyl trimethylammonium chloride (APTAC or MAPTAC) or diallyl dimethyl ammonium chloride (DADMAC), with methacrylamidopropyl trimethylammonium chloride (MAPTAC) being most preferred. When DADMAC is polymerized, two polymer structures are possible: an N-substituted piperidine structure or an N-substituted pyrrolidine structure. The pyrrolidine structure is preferred (see John, Wilson; et al. (2002), Synthesis and Use of PolyDADMAC for Water Purification).

[0082] The ethylenically unsaturated monomer may be selected from the group consisting of C3-C8 ethylenically unsaturated acids and / or salts thereof, C3-C8 hydroxyalkyl acrylates, and mixtures thereof, where C3-C8 means that the ethylenically unsaturated acids and / or salts thereof, or C3-C8 hydroxyalkyl acrylates contain 3 to 8 carbon atoms.

[0083] Suitable C3 to C8 ethylenically unsaturated acids and / or salts thereof include (meth)acrylic acid and mixtures thereof, with acrylic acid being preferred. Suitable salts include alkali metal and ammonium salts.

[0084] Suitable C3-C8 hydroxyalkyl acrylates can be selected from the group consisting of ethyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxy-2-methylethyl (meth)acrylate, 2-hydroxy-1-methylethyl (meth)acrylate, and mixtures thereof, preferably ethyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, and mixtures thereof, more preferably ethyl (meth)acrylate, with ethyl acrylate being most preferred.

[0085] The quaternized acrylic copolymer may further comprise, as a polymerized monomer, an additional monomer selected from the group consisting of ethyl acrylate, 2-acrylamido-2-methylpropane-sulfonic acid, N-isopropylamide, vinylpyrrolidone, and mixtures thereof, with ethyl acrylate and / or vinylpyrrolidone being preferred, and ethyl acrylate being particularly preferred.

[0086] The additional monomers are preferably present in a concentration of less than 20 mole percent, preferably less than 15 mole percent, and more preferably less than 10% of the total monomers present in the quaternized acrylic.

[0087] The quaternized acrylic copolymer can include diallyldimethylammonium chloride (DADMAC) as a cationic monomer, together with hydroxyethyl acrylate as an ethylenically unsaturated monomer. Such quaternized acrylic copolymer can include vinylpyrrolidone as an additional monomer. Such quaternized acrylic copolymers include those sold by Solvay under the trade name Mirapol® SURF-S FAST DRY.

[0088] More preferably, the quaternized acrylic copolymer can include (meth)acrylamidopropyltrimethylammonium chloride (APTAC or MAPTAC) as a cationic monomer, together with acrylate and / or ethyl acrylate as an ethylenically unsaturated monomer. Such quaternized acrylic copolymer can include ethyl acrylate as an additional monomer. Such quaternized acrylic copolymers include those sold by BASF under the trade name Polyquart®, with Polyquart® 149A being particularly preferred.

[0089] Divalent salts: The composition preferably contains a divalent metal salt, preferably a calcium or magnesium salt (Ca 2+ Salt or Mg 2+ Suitable divalent salts include magnesium and / or calcium chlorides, sulfates, carbonates, bicarbonates, linear alkylbenzene sulfonates, and mixtures thereof, with magnesium salts being particularly preferred. Magnesium chlorides, sulfates, linear alkylbenzene sulfonates, and mixtures thereof are particularly preferred, with magnesium chlorides, sulfates, and mixtures thereof being even more particularly preferred, and magnesium chloride being most preferred.

[0090] When calcium salts are present, the magnesium ions and calcium ions are preferably present in a molar ratio of 1:1 or greater, preferably 1.5:1 or greater, preferably 2:1 or greater.

[0091] It has been found that compositions of the present disclosure further comprising such divalent salts improve detergency and reduce slipperiness of dishware after washing with such compositions. It is believed that some residual anionic surfactant remains on the dishware, and the presence of divalent ions reduces the electrostatic interactions between the residual anionic surfactants, improving detergency and reducing slipperiness, especially when the dishware is washed using soft water having a hardness of less than 1.25 mmol / L calcium equivalent.

[0092] Preferably, the divalent salt is water-soluble. As used herein, the term "water-soluble" refers to a compound that can be dissolved in water at a concentration of greater than 1.0% by weight in distilled water at 21°C.

[0093] Further ingredients: The composition can include additional components such as those selected from amphiphilic alkoxylated polyalkyleneimines, triblock copolymers, hydrotropes, organic solvents, other adjunct components such as those described herein, and mixtures thereof.

[0094] Amphiphilic alkoxylated polyalkyleneimines: The compositions of the present disclosure may further comprise 0.05% to 2%, preferably 0.07% to 1%, by weight of the total composition of an amphiphilic polymer. Suitable amphiphilic polymers may be selected from the group consisting of amphiphilic alkoxylated polyalkyleneimines and mixtures thereof. The amphiphilic alkoxylated polyalkyleneimine polymers have been found to reduce gel formation on hard surfaces being cleaned when the liquid compositions are added directly to cleaning implements (such as sponges) prior to cleaning and then contacted with heavily oily surfaces, particularly when the cleaning implement contains little to no water, e.g., when a lightly pre-moistened sponge is used.

[0095] Preferred amphiphilic alkoxylated polyethyleneimine polymers have the general structure of formula (I):

[0096] [ka] wherein the polyethyleneimine backbone has a weight-average molecular weight of 600, n in formula (I) is an average of 10, m in formula (I) is an average of 7, and R in formula (I) is selected from hydrogen, C1-C4 alkyl, and mixtures thereof, preferably hydrogen. The permanent degree of quaternization in formula (I) can be 0% to 22% of the nitrogen atoms in the polyethyleneimine backbone. The molecular weight of this amphiphilic alkoxylated polyethyleneimine polymer is preferably 10,000 to 15,000 Da.

[0097] More preferably, the amphiphilic alkoxylated polyethyleneimine polymer has the general structure of formula (I), except that the polyethyleneimine backbone has a weight-average molecular weight of 600 Da, n in formula (I) averages 24, m in formula (I) averages 16, and R in formula (I) is selected from hydrogen, C1-C4 alkyl, and mixtures thereof, preferably hydrogen. The degree of permanent quaternization of formula (I) can be 0% to 22% of the nitrogen atoms of the polyethyleneimine backbone, preferably 0%. The molecular weight of this amphiphilic alkoxylated polyethyleneimine polymer is preferably 25,000 to 30,000, most preferably 28,000 Da.

[0098] Amphiphilic alkoxylated polyethyleneimine polymers can be made by the methods described in more detail in WO 2007 / 135645.

[0099] Alternatively, the composition may be free of amphiphilic polymers.

[0100] Triblock copolymer: The compositions of the present disclosure can include a triblock copolymer. The triblock copolymer can be present in a concentration of 1% to 20% by weight of the total composition, preferably 3% to 15% by weight, and more preferably 5% to 12% by weight. Suitable triblock copolymers are those represented by formula (I):(EO) x (PO) y(EO) x wherein EO represents ethylene oxide, and each x represents the number of EO units in the EO block. Each x can independently have an average of 5 to 50, preferably 10 to 40, and more preferably 10 to 30. Preferably, x is the same for both EO blocks, and "same" means that the difference in x between the two EO blocks is within 2 units at most, preferably within 1 unit at most, and more preferably both x's have the same number of units. PO represents propylene oxide, and y represents the number of PO units in the PO block. Each y can have an average of 28 to 60, preferably 30 to 55, and more preferably 30 to 48.

[0101] Preferably, the ratio of y to each x in the triblock copolymer is 3:1 to 2:1. The ratio of y to the average x of the two EO blocks in the triblock copolymer is preferably 3:1 to 2:1. Preferably, the triblock copolymer has an average weight percentage of total EO that is 30% to 50% by weight of the triblock copolymer. Preferably, the triblock copolymer has an average weight percentage of total PO that is 50% to 70% by weight of the triblock copolymer. It is understood that the average total weight percentages of EO and PO for a triblock copolymer add up to 100%. The triblock copolymer can have an average molecular weight of 2060 to 7880, preferably 2620 to 6710, more preferably 2620 to 5430, and most preferably 2800 to 4700. The average molecular weight is determined using 1H NMR spectroscopy (see Thermo Scientific Application Note No. AN52907).

[0102] Triblock copolymers have the basic structure ABA, where A and B are different homopolymer and / or monomer units. In this case, A is ethylene oxide (EO) and B is propylene oxide (PO). Those skilled in the art will recognize that the phrase "block copolymer" is synonymous with this definition of "block polymer."

[0103] Triblock copolymers according to formula (I) having specific EO / PO / EO configurations and respective homopolymer lengths have been found to enhance the foam persistence performance of liquid hand dishwashing detergent compositions in the presence of greasy soils and / or foam consistency throughout dilution in the cleaning process.

[0104] Suitable EO-PO-EO triblock copolymers are commercially available from BASF, e.g., as the Pluronic® PE series, and from Dow Chemical Company, e.g., as the Tergitol® L series. Particularly preferred triblock copolymers from BASF are sold under the trade names Pluronic® PE 6400 (MW about 2900, about 40 wt. % EO) and Pluronic® PE 9400 (MW about 4600, 40 wt. % EO). Particularly preferred triblock copolymers from Dow Chemical Company are sold under the trade name Tergitol® L64 (MW about 2700, about 40 wt. % EO).

[0105] Preferred triblock copolymers are readily biodegradable under aerobic conditions.

[0106] Cyclic polyamines: The composition can include a cyclic polyamine with amine functionality to aid in cleaning. The compositions of the present disclosure preferably include from 0.1% to 3%, more preferably from 0.2% to 2%, and especially from 0.5% to 1%, by weight of the composition, of the cyclic polyamine.

[0107] Cyclic polyamines have at least two primary amine functional groups. The primary amine can be located at any position within the cyclic amine, but it has been found that better performance can be obtained from the viewpoint of grease cleaning when the primary amine is located at the 1st and 3rd positions. It has also been found that cyclic amines in which one of the substituents is -CH3 and the other is H provide improved grease cleaning performance.

[0108] Thus, the most preferred cyclic polyamines for use in the compositions of the present disclosure are those selected from the group consisting of 2-methylcyclohexane-1,3-diamine, 4-methylcyclohexane-1,3-diamine, and mixtures thereof. These particular cyclic polyamines, when combined with the surfactant system of the compositions of the present disclosure, function to improve the suds and grease cleaning profile throughout the dishwashing process.

[0109] Suitable cyclic polyamines may be supplied by BASF under the trade name Baxxodur, with Baxxodur ECX-210 being particularly preferred.

[0110] A combination of a cyclic polyamine and magnesium sulfate is particularly preferred. Thus, the composition may further comprise magnesium sulfate at a concentration of 0.001% to 2.0% by weight of the composition, preferably 0.005% to 1.0% by weight, and more preferably 0.01% to 0.5% by weight.

[0111] Salts, hydrotropes, organic solvents: The compositions of the present disclosure may further comprise at least one active agent selected from the group consisting of i) salts, ii) hydrotropes, iii) organic solvents, and mixtures thereof.

[0112] The compositions of the present disclosure may comprise from about 0.05% to about 2% by weight of the total composition, preferably from about 0.1% to about 1.5% by weight, or more preferably from about 0.5% to about 1% by weight of a salt, preferably a monovalent or divalent inorganic salt, or a mixture thereof, more preferably a salt selected from sodium chloride, sodium sulfate, and a mixture thereof. Sodium chloride is most preferred.

[0113] The compositions of the present disclosure may comprise from about 0.1% to about 10%, or preferably from about 0.5% to about 10%, or more preferably from about 1% to about 10% by weight of the total composition of a hydrotrope or mixture thereof, preferably sodium cumene sulfonate.

[0114] The composition may contain about 0.1% to about 10% by weight of an organic solvent, based on the weight of the total composition, or preferably about 0.5% to about 10% by weight, or more preferably about 1% to about 10% by weight. Suitable organic solvents include those selected from the group consisting of alcohols, glycols, glycol ethers, and mixtures thereof, preferably alcohols, glycols, and mixtures thereof. Ethanol is a preferred alcohol. Polyalkylene glycols, particularly polypropylene glycols, are preferred glycols, with polypropylene glycols having a weight-average molecular weight of 750 Da to 1,400 Da being particularly preferred.

[0115] Supplementary ingredients The compositions may optionally contain numerous other adjunct ingredients such as builders (preferably citrate salts), chelating agents, conditioning polymers, other cleansing polymers, surface modifying polymers, structuring agents, emollients, moisturizers, skin rejuvenating actives, enzymes, carboxylic acids, scrubbing particles, fragrances, malodor control agents, pigments, dyes, opacifiers, pearlescent particles, inorganic cations such as alkaline earth metals such as Ca / Mg ions, antimicrobial agents, preservatives, viscosity modifiers (e.g., salts such as NaCl, and other mono-, di-, and trivalent salts), and pH adjusters and buffering means (e.g., carboxylic acids such as citric acid, HCl, NaOH, KOH, alkanolamines, carbonates such as sodium carbonate, bicarbonates, sesquicarbonates).

[0116] Chelating Agents: The compositions herein may optionally further comprise a chelating agent at a concentration of from 0.1% to 10%, preferably from 0.2% to 5%, more preferably from 0.2% to 3%, and most preferably from 0.5% to 1.5% by weight of the composition.

[0117] Suitable chelating agents may be selected from the group consisting of aminocarboxylates, aminophosphonates, polyfunctionally substituted aromatic chelating agents, and mixtures thereof.

[0118] Aminocarboxylates include ethylenediaminetetraacetic acid, N-hydroxyethylethylenediaminetriacetic acid, nitrilotriacetic acid, ethylenediaminetetrapropionic acid, triethylenetetraaminehexaacetic acid, diethylenetriaminepentaacetic acid, and ethanoldiglycine, alkali metal, ammonium, and substituted ammonium salts thereof, and mixtures thereof, as well as MGDA (methylglycinediacetic acid), and its salts and derivatives, and GLDA (glutamic acid-N,N-diacetic acid), and its salts and derivatives. GLDA (its salts and derivatives) is particularly preferred, and its tetrasodium salt is especially preferred.

[0119] builder: The compositions herein may include a builder, preferably a carboxylate builder. Salts of carboxylic acids useful herein include C1-6 linear salts or salts of cyclic acids containing at least 3 carbons. The linear or cyclic carbon-containing chain of the carboxylic acid or salt thereof may be substituted with a substituent selected from the group consisting of hydroxyl, ester, ether, aliphatic groups having 1 to 6, more preferably 1 to 4, carbon atoms, and mixtures thereof.

[0120] Preferred carboxylic acid salts are those selected from the group consisting of salicylic acid, maleic acid, acetylsalicylic acid, 3-methylsalicylic acid, 4-hydroxyisophthalic acid, dihydroxyfumaric acid, 1,2,4-benzenetricarboxylic acid, pentanoic acid, citric acid, and mixtures thereof, preferably citric acid.

[0121] Alternative carboxylate builders suitable for use in the compositions of the present invention include salts of fatty acids such as palm kernel derived fatty acids or coconut derived fatty acids, or salts of polycarboxylic acids.

[0122] The cation of the salt is preferably selected from alkali metals, alkaline earth metals, monoethanolamine, diethanolamine, or triethanolamine, and mixtures thereof, and is preferably sodium.

[0123] When present, the carboxylic acid or salt thereof is preferably present at a level of from 0.05% to 5% by weight of the total composition, more preferably from 0.1% to 1%.

[0124] Pre-packaged products: The hand dishwashing detergent composition can be packaged in a container, typically a plastic container. Suitable containers include an orifice. Suitable containers include conventional upright dispenser containers in which the orifice is located at the top of the container and inverted / bottom dispenser containers in which the orifice is located at the bottom of the container. In the case of an inverted / bottom dispenser container, the orifice may be capped and / or equipped with a slit valve as described in U.S. Pat. No. 10,611,531. Typically, the container includes a cap, and the orifice is typically provided on the cap. The cap may include an inlet, and the orifice is located at the outlet of the inlet. The inlet may have a length of 0.5 mm to 10 mm.

[0125] The orifice is 3mm at the outlet. 2 ~20mm 2 , preferably 3.8 mm 2 ~12mm 2 , more preferably 5 mm 2 ~10mm 2 and the container further comprises a composition according to the present disclosure, the cross-sectional area being measured perpendicular to the liquid outlet from the container (i.e., perpendicular to the liquid flow during dispensing).

[0126] The container can typically contain 200 mL to 5,000 mL, preferably 350 mL to 2,000 mL, and more preferably 400 mL to 1,000 mL of the liquid hand dishwashing detergent composition.

[0127] Washing method: The present disclosure is further directed to a method of manually washing dishware with a composition of the present disclosure, the method comprising contacting the dishware with a composition according to the present disclosure.

[0128] A suitable method can include contacting the dishware with the composition of the present disclosure by dispensing the composition into a volume of water to form a wash solution and immersing the dishware in the solution. The dishware is then washed with the composition in the presence of water.

[0129] The dishware can be rinsed. As used herein, "rinsing" means contacting the dishware washed by the process of the present disclosure with a substantial amount of a suitable solvent, typically water. "Substantial amount" typically means about 1 to about 20 liters or under running water.

[0130] The compositions herein can be applied in their diluted form. Soiled dishes are contacted with an effective amount of the disclosed composition, preferably in liquid form, diluted with water, typically about 0.5 mL to about 20 mL (per about 25 dishes to be treated), preferably about 3 mL to about 10 mL. The actual amount of composition used is at the discretion of the user and typically depends on factors such as the specific product formulation of the composition, including the concentration of active ingredients in the composition, the number of soiled dishes to be cleaned, and the degree of soiling of the dishes. Generally, about 0.01 mL to about 150 mL, preferably about 3 mL to about 40 mL, of the disclosed composition is combined with about 2,000 mL to about 20,000 mL, more typically about 5,000 mL to about 15,000 mL, of water in a sink. After immersing the soiled dishes in the sink containing the diluted composition, the soiled surface of the dishes is contacted with a cloth, sponge, or similar cleaning implement. The cloth, sponge, or similar cleaning implement may be immersed in the composition and water mixture before contacting the dishware, typically for a period ranging from about 1 to about 10 seconds, although the actual time will vary with each application and user. Contacting the cloth, sponge, or similar cleaning implement with the dishware involves simultaneously scrubbing the dishware.

[0131] Alternatively, the composition herein can be applied in its undiluted form to the dishware to be treated. "In its undiluted form" as used herein means that the composition is applied directly to the surface to be treated or to a cleaning device or implement, such as a brush, sponge, nonwoven material, or woven material, without any significant dilution by the user prior to application. "In its undiluted form" also includes slight dilution, for example, due to the presence of water on the surface of the cleaning device, or the addition of water by the consumer to remove residual amounts of the composition from a bottle. Thus, the composition in undiluted form includes a mixture of the composition and water in a ratio ranging from 50:50 to 100:0, preferably 70:30 to 100:0, more preferably 80:20 to 100:0, and even more preferably 90:10 to 100:0, depending on the user's habits and cleaning tasks.

[0132] combination A. A liquid hand dishwashing detergent composition comprising: 5% to 50% by weight of the composition of a surfactant system, a. at least 40% by weight of a surfactant system of anionic surfactants, the anionic surfactant comprising an alkyl sulfated anionic surfactant, the alkyl sulfated anionic surfactant having an average degree of alkoxylation of less than 0.25, preferably the alkyl sulfated anionic surfactant being non-ethoxylated; b. a co-surfactant selected from the group consisting of amphoteric surfactants, zwitterionic surfactants, and mixtures thereof; a surfactant system in which an anionic surfactant and a co-surfactant are present in a weight ratio of 2:1 to 5:1; A liquid dishwashing detergent composition comprising: 0.1% to 10% by weight of the composition of a sugar, sugar alcohol, or a mixture thereof. B. A liquid hand dish detergent composition as disclosed in A, wherein the composition comprises from 0.5% to 7.5%, more preferably from 1% to 5%, by weight of the composition of a sugar, sugar alcohol, or mixture thereof, preferably a sugar alcohol, or mixture thereof. C. A liquid hand dish detergent composition as disclosed in A or B, wherein the sugar is selected from the group consisting of trehalose, glucose, fructose, galactose, sucrose, lactose, maltose, rhamnose, ribose, and mixtures thereof, preferably trehalose. D. The liquid hand dish detergent composition disclosed in any one of A to C, wherein the sugar alcohol is selected from the group consisting of ethylene glycol, glycerol, sorbitol, erythritol, threitol, arabitol, ribitol, galactitol, fucitol, iditol, inositol, xylitol, mannitol, maltitol, isomalt, volemitol, lactitol, maltotriitol, maltotetritoitol, polyglycitol, or a mixture thereof, preferably glycerol, sorbitol, or a mixture thereof, and most preferably glycerol. E. A liquid hand dishwashing composition as disclosed in any one of A-D, wherein the surfactant system and the sugar, sugar alcohol, or mixture thereof are present in a weight ratio of from 20:1 to 1:1, preferably from 15:1 to 3:1, more preferably from 10:1 to 5:1. F. A liquid dishwashing detergent composition as disclosed in A to E, in which the weight ratio of the alkyl sulfated anionic surfactant to the sugar, sugar alcohol, or mixture thereof is 1:1 to 15:1, preferably 2:1 to 10:1, and more preferably 3:1 to 8:1. G. A liquid hand dish detergent composition as disclosed in any one of A-F, wherein the composition comprises from 6.0% to 40%, preferably from 15% to 35%, by weight of the composition of a surfactant system. H. A liquid hand dish detergent composition as disclosed in any one of A to G, wherein the surfactant system comprises from 50% to 90% anionic surfactant by weight of the surfactant system, more preferably from 65% to 85%. I. The liquid hand dish detergent composition disclosed in any one of A-H, wherein the anionic surfactant comprises at least 70%, preferably at least 85%, more preferably 100% by weight of the anionic surfactant alkyl sulfated anionic surfactant, preferably the alkyl sulfated anionic surfactant having a number average alkyl chain length of 8 to 18 carbon atoms, preferably 10 to 14 carbon atoms, more preferably 12 to 14 carbon atoms, and even more preferably 12 to 13 carbon atoms. J. The liquid hand dish detergent composition disclosed in any one of A-I, wherein the alkyl sulfated anionic surfactant has an average degree of alkoxylation of less than 0.1, and more preferably the alkyl sulfated anionic surfactant is non-alkoxylated. K. A liquid dishwashing detergent composition according to any one of A to J, wherein the alkyl sulfated anionic surfactant has a weight average branching degree of at least 10%, preferably 20% to 60%, more preferably 30% to 50%. L. A liquid dishwashing detergent composition disclosed in any one of A to K, wherein the weight ratio of anionic surfactant to amphoteric co-surfactant is 2.5:1 to 4:1. M. The liquid hand dishwashing composition disclosed in any one of A-L, wherein the co-surfactant is an amphoteric surfactant selected from the group consisting of alkyl dimethyl amine oxide, alkyl amidopropyl dimethyl amine oxide, and mixtures thereof, most preferably alkyl dimethyl amine oxide. N. The liquid hand dishwashing composition disclosed in any one of A-M, wherein the surfactant system further comprises a nonionic surfactant, wherein the nonionic surfactant is selected from the group consisting of alkoxylated alcohol nonionic surfactants, alkyl polyglucoside nonionic surfactants, and mixtures thereof, more preferably an alkoxylated alcohol nonionic surfactant, and preferably the nonionic surfactant is present at a concentration of 0.1% to 10%, preferably 1.0% to 8.0%, more preferably 2.0% to 5.0% by weight of the composition. O. The liquid hand dishwashing composition disclosed in any one of A-N, wherein the composition further comprises 0.01% to 3.0%, preferably 0.05% to 2.0%, more preferably 0.1% to 1.0% by weight of the composition of a quaternized acrylic copolymer.

[0133] Test Method Liposome disruption Liposome disruption measured via fluorescence was used to evaluate the skin mildness of liquid detergent compositions. A dispersion of 200 nm unilamellar liposomes composed of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) with encapsulated calcein fluorescent dye was used (supplied by ACM Biolabs, Singapore). A diluted liposome dispersion was prepared by diluting 64 μL of DPPC liposome dispersion (5 mM DPPC) with 24 mL of 0.01 M phosphate-buffered saline. This buffer was prepared by dissolving one tablet of phosphate-buffered saline (supplied by Sigma-Aldrich as P4417) in 200 mL of demineralized water to obtain a solution containing 137 mM NaCl, 2.7 mM KCl, and 10 mM phosphate buffer (pH 7.4 at 25°C). A 0.1 wt% aqueous solution of Triton X-100, a potent liposome-disrupting active, was used as a control. Detergent solutions were prepared by diluting liquid detergent in demineralized water to a concentration of 0.25 wt% of the liquid detergent.

[0134] 225 μL of diluted liposome dispersion was filled into the wells of a 96-well microtiter plate. In one well, nothing was added to the diluted liposome dispersion (zero reference), and 25 μL of 0.1% Triton X-100 solution was added to the diluted liposome dispersion in another well (Triton X-reference). In the other well, 25 μL of 0.25 wt % detergent solution was added to the diluted liposome dispersion. Four replicates were prepared for each measurement point.

[0135] Fluorescence was measured using a FLUOstar Optima plate reader (commercially available from BMG LABTECH) with excitation and emission filters set at 490 nm and 520 nm, respectively.

[0136] As the liposome bilayer is disrupted, more calcein fluorescent dye is released into solution, and therefore the extent of liposome bilayer disruption can be measured by the increase in fluorescence.

[0137] The degree of liposome bilayer disruption from detergent samples compared to that from Triton X can be expressed as a Liposome Disruption Index (LDI—higher, worse), which is calculated as follows:

[0138]

number

[0139] Liposome disruption index (LDI%) was measured after 30 and 60 minutes of exposure at room temperature and static conditions, and the results were averaged over four replicates. The index for formulations containing sugar alcohol was calculated equally to the reference formulation without sugar alcohol.

[0140] Viscosity measurement: Viscosity is measured using a controlled stress rheometer (such as Thermo Scientific's HAAKE MARS or equivalent) using a 60 mm 1° cone and a 52 micrometer gap size at 20° C. After 2 minutes of temperature equilibration, the sample is heated for 10 seconds. -1 The reported viscosity of the liquid hand dishwashing detergent composition is determined by shearing the average shear stress from 15 seconds to 30 seconds at 20°C for 10 seconds. -1 is defined as the shear rate at which the shear force is applied.

[0141] drying speed Drying rate is related to the degree of water sheeting: the better the water sheeting, the less water is retained on the wet item.

[0142] Water sheeting is assessed by scoring the amount of water sheeting observed on black glossy plates made of tempered glass (BACKIG 25 cm x 25 cm, supplied by IKEA) when they are washed with the hand dish detergent test composition and then left vertically on a drying rack. More specifically, A sponge (Schuursponsen merk Delhaize-Easy grip, dimensions: 7 cm x 9.5 cm) is wetted evenly with water equivalent to 2.67 mmol / l CaCO3 hardness at 35°C by saturating the sponge with water and then squeezing it by hand until no further water is squeezed out.

[0143] 1 mL of the hand dishwashing composition is distributed evenly on the sponge.

[0144] The sponge is manually squeezed with one hand four times with full force onto the black glossy plate to create a lather, and then the plate is washed in ten circular clockwise movements covering the edges and central part of the plate so that the entire plate is treated with the lather.

[0145] The plate is then rinsed for 15 or 30 seconds under running water (35°C water with a water hardness of 2.67 mmol / L CaCO3 equivalent) at a flow rate sufficient to allow complete removal of bubbles and complete coverage of the plate with water, after which the plate is placed vertically on a drying rack under standard room conditions (20 + / - 1°C). The water running down the plate is then visually graded on a scale of 0 to 100% to indicate the amount of water still visibly covering the plate after the first 60 seconds. 0% corresponds to water remaining on the entire plate, 50% indicates that half of the plate is covered with a water film, and 100% indicates that no water film is visible. [Example]

[0146] The following liquid hand dishwashing compositions were prepared by simple mixing. All examples in Table 1 contain alkyl ethoxylated sulfate anionic surfactants with an average ethoxylation degree outside the scope of the present invention (meaning that the alkyl sulfated anionic surfactants do not have an average alkoxylation degree of less than 0.25), and are therefore comparative. All examples in Table 1 contain the same surfactant concentration. All compositions in Table 1 contain the same ratio of anionic surfactant and amphoteric co-surfactant.

[0147] [Table 1] * comparison 1 Branch 33.43% 2 It is sold by Shell under the trade name Neodol® 91-8. 3 Polyethyleneimine backbone with a weight average molecular weight of 600 g / mol, first ethoxylated with 24 EO and then propoxylated with 16 PO, supplied by BASF. 4 Actual value: the lower the better, index: the higher the better.

[0148] Comparing Comparative Example A with Comparative Examples B, C, and D, it can be seen that the addition of a sugar or sugar alcohol according to the present disclosure to a surfactant system containing an alkyl sulfated anionic surfactant outside the scope of the present disclosure provides a moderate improvement in liposome disruption, indicating a moderate improvement in preventing dry skin.

[0149] The following liquid hand dishwashing compositions were prepared by simple mixing. All examples in Table 2 contained a non-ethoxylated alkyl sulfate anionic surfactant instead of the ethoxylated alkyl sulfate and amphoteric surfactant in Table 1. All examples contained the same concentration of surfactant. All compositions contained the same ratio of anionic surfactant and amphoteric co-surfactant.

[0150] [Table 2] * comparison 5 Branch 33.43%

[0151] Comparing Comparative Example E with Examples 1, 2, and 3 of the present invention, it can be seen that the addition of a sugar or sugar alcohol according to the present disclosure to a surfactant system containing an alkyl sulfated anionic surfactant according to the present disclosure results in a strong improvement in liposome disruption, indicating a strong improvement in preventing dry skin. The single variable addition of a sugar of a sugar alcohol according to the present disclosure in addition to a non-ethoxylated alkyl sulfate anionic surfactant clearly has a greater effect in preventing dry skin than when formulated with an ethoxylated alkyl sulfate anionic surfactant outside the scope of the present disclosure.

[0152] Further exemplary formulations according to the present invention include Inventive Examples 1-3 above, which further comprise 0.1% to 0.5% (wt % - 100% active basis) of Polyquart 149A available from BASF.

[0153] The following liquid hand dishwashing compositions were prepared by simple mixing. All examples in Table 3 contained a non-ethoxylated alkyl sulfate anionic surfactant and an amphoteric surfactant. All examples contained the same concentration of surfactant. All compositions contained the same ratio of anionic surfactant to amphoteric co-surfactant.

[0154] [Table 3] * comparison 6 Branch 30% 7 A cationic polymer sold under the trade name Polyquart® 149A supplied by BASF. 8 IKEA BACKIG 25cm x 25cm 9 IKEA DINERA

[0155] Examples F and G are comparative compositions that do not contain a sugar or sugar alcohol, and Example G contains a quaternized acrylic copolymer. Examples 4 and 5 contain glycerol, and Example 5 also contains a quaternized acrylic copolymer.

[0156] Example F (no glycerol, no quaternized acrylic copolymer) and Example 4 (glycerol, no quaternized acrylic copolymer) showed no or very limited sheeting of water from the plate. Example G (quaternized acrylic copolymer, no glycerol) showed improved sheeting at 40%. Surprisingly, the combination of glycerol and quaternized acrylic copolymer (Example 6) showed a significant increase in sheeting percentage. This is unexpected, as the composition containing only glycerol showed no or very limited sheeting of water from the plate, while the combination of glycerol and quaternized acrylic copolymer had a dramatic effect on sheeting percentage compared to the quaternized acrylic copolymer without glycerol.

[0157] Dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "approximately 40 mm."

[0158] All documents cited herein, including any cross-referenced or related patents or patent applications, and any patent application or patent to which this application claims priority or benefit, are incorporated herein by reference in their entirety, unless expressly excluded or otherwise limited. The citation of any document shall not be deemed to be prior art to any invention disclosed or claimed herein, or to teach, suggest, or disclose any such invention, either alone or in combination with any other reference or references. Furthermore, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall control.

[0159] While particular embodiments of the present disclosure have been illustrated and described, it would be apparent to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the present disclosure. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this disclosure.

Claims

1. A liquid detergent composition for hand dishwashing, comprising: 5% to 50% by weight of the composition of a surfactant system, a. at least 40% by weight of the surfactant system anionic surfactant, comprising an alkyl sulfated anionic surfactant, said alkyl sulfated anionic surfactant having an average degree of alkoxylation of less than 0.25, preferably said alkyl sulfated anionic surfactant being non-ethoxylated; b. a co-surfactant selected from the group consisting of amphoteric surfactants, zwitterionic surfactants, and mixtures thereof; a surfactant system, wherein the anionic surfactant and the co-surfactant are present in a weight ratio of from 2:1 to 5:1; and 0.1% to 10% by weight of the composition of a sugar, sugar alcohol, or mixture thereof.

2. 2. A liquid detergent composition for hand dishwashing according to claim 1, wherein the composition comprises from 0.5% to 7.5%, more preferably from 1% to 5% of said sugar, sugar alcohol, or said mixture thereof, preferably said sugar alcohol, or mixture thereof, by weight of the composition.

3. 3. A liquid detergent composition for hand dishwashing according to claim 1 or 2, wherein the sugar is selected from the group consisting of trehalose, glucose, fructose, galactose, sucrose, lactose, maltose, rhamnose, ribose, and mixtures thereof, preferably trehalose.

4. 4. The liquid detergent composition for hand dishwashing according to claim 1, wherein the sugar alcohol is selected from the group consisting of ethylene glycol, glycerol, sorbitol, erythritol, threitol, arabitol, ribitol, galactitol, fucitol, iditol, inositol, xylitol, mannitol, maltitol, isomalt, volemitol, lactitol, maltotriitol, maltotetritoitol, polyglycitol, or a mixture thereof, preferably glycerol, sorbitol, or a mixture thereof, and most preferably glycerol.

5. 5. The liquid composition for hand dishwashing according to any one of claims 1 to 4, wherein the surfactant system and the sugar, sugar alcohol, or mixture thereof are present in a weight ratio of from 20:1 to 1:1, preferably from 15:1 to 3:1, more preferably from 10:1 to 5:

1.

6. 6. The liquid detergent composition for hand dishwashing according to any one of claims 1 to 5, wherein the weight ratio of the alkyl sulfated anionic surfactant to the sugar, sugar alcohol, or mixture thereof is from 1:1 to 15:1, preferably from 2:1 to 10:1, more preferably from 3:1 to 8:

1.

7. A liquid detergent composition for hand dishwashing according to any one of the preceding claims, wherein the composition comprises from 6.0% to 40%, preferably from 15% to 35% by weight of the composition of said surfactant system.

8. A liquid detergent composition for hand dishwashing according to any one of the preceding claims, wherein the surfactant system comprises from 50% to 90%, more preferably from 65% to 85% of said anionic surfactant by weight of the surfactant system.

9. 9. A liquid hand dishwashing detergent composition according to any one of the preceding claims, wherein the anionic surfactant comprises at least 70%, preferably at least 85%, more preferably 100% by weight of the anionic surfactant of alkyl sulfated anionic surfactant, preferably the alkyl sulfated anionic surfactant having a number average alkyl chain length of from 8 to 18 carbon atoms, preferably from 10 to 14 carbon atoms, more preferably from 12 to 14 carbon atoms, even more preferably from 12 to 13 carbon atoms.

10. 10. A liquid detergent composition for hand dishwashing according to any one of the preceding claims, wherein the alkyl sulfated anionic surfactant has an average degree of alkoxylation of less than 0.1, more preferably the alkyl sulfated anionic surfactant is not alkoxylated.

11. A liquid detergent composition for hand dishwashing according to any one of the preceding claims, wherein the alkyl sulfated anionic surfactant has a weight average degree of branching of at least 10%, preferably from 20% to 60%, more preferably from 30% to 50%.

12. 12. A liquid detergent composition for hand dishwashing according to any one of claims 1 to 11, wherein the weight ratio of the anionic surfactant to the amphoteric co-surfactant is from 2.5:1 to 4:

1.

13. 13. The liquid composition for hand dishwashing according to any one of claims 1 to 12, wherein the co-surfactant is an amphoteric surfactant selected from the group consisting of alkyl dimethyl amine oxide, alkyl amidopropyl dimethyl amine oxide, and mixtures thereof, most preferably alkyl dimethyl amine oxide.

14. 14. The liquid composition for hand dishwashing according to any one of the preceding claims, wherein the surfactant system further comprises a nonionic surfactant selected from the group consisting of alkoxylated alcohol nonionic surfactants, alkyl polyglucoside nonionic surfactants, and mixtures thereof, more preferably an alkoxylated alcohol nonionic surfactant, and preferably the nonionic surfactant is present at a level from 0.1% to 10%, preferably from 1.0% to 8.0%, more preferably from 2.0% to 5.0% by weight of the composition.

15. 15. A liquid composition for hand dishwashing according to any one of the preceding claims, wherein the composition further comprises from 0.01% to 3.0%, preferably from 0.05% to 2.0%, more preferably from 0.1% to 1.0% by weight of the composition of a quaternized acrylic copolymer.

Images