Wax dispersions

Abstract

The present invention relates to aqueous wax dispersions comprising hydrogenated rapeseed oil, to a process for the preparation thereof and to the use thereof as pearling and / or conditioning agents in personal care formulations, in particular for the treatment of the hair and / or body.

Description

Technical Field

[0001] The present invention relates to aqueous wax dispersions comprising hydrogenated rapeseed oil, to a process for their preparation and to their use as pearlescent agents and / or conditioning agents in personal care formulations, in particular for treating the hair and / or the body.

[0002] It is known to use wax dispersions containing the wax ethylene glycol distearate (=EGDS) as excellent pearlescent agents in personal care products like shampoo or shower gel formulations to provide them with a pearlescent, lustrous, luxurious appearance. However, there is a trend in the personal care market to completely or partially replace the wax EDGS with natural labeled waxes. Therefore, there is a need to provide wax dispersions which do not contain ethylene oxide and / or ethylene glycol in their chemical structure.

[0003] WO 03 / 003991 discloses cosmetic preparations, especially hair preparations, which contain semi-solid or solid natural oils and diolein for caring for dry or damaged hair, for preventing dry hair and split ends and for increasing the shine of hair. Natural oils like hydrogenated vegetable oils or glycerides in combination with diolein are used as softeners in hair care preparations. Several natural oils or hydrogenated oils derived from various plants are listed, e.g. HF-62; VP (which is a mixture of vegetable oil, hydrogenated vegetable oil and candelilla wax), or SBE.

[0004] WO 2020 / 229097 discloses aqueous cosmetic preparations containing wax particles with an average particle size of 1.5 to 120 μm, which can be used as pearlescent agents and / or sunscreens with conditioning properties. These waxes are selected from glycerides or hydrogenated vegetable oils, waxes derived from plants or animals, synthetic waxes, etc. Hydrogenated rapeseed oil is mentioned as an example of hydrogenated vegetable oil, but there is no example or any suggestion how to combine this special wax hydrogenated rapeseed oil with a surfactant or emulsifier to obtain stable aqueous wax dispersions, which have excellent pearlizing effect and good storage stability.

[0005] US 2011 / 0247644 discloses a kit for dyeing and bleaching keratin-containing fibers, the kit comprising reagents A1, A2 and B, wherein for reagent A2, an example A2d comprises Cegesoft HF (= hydrogenated rapeseed oil), Eumulgin VL 75 (mixture of lauryl glucoside + polyglyceryl-dihydroxystearate + glycerol), (Cocoamphoacetate) and Eutanol (=2-octyldodecanol; so-called Guerbet alcohol).

[0006] Despite the great demand, it is actually difficult to partially or fully replace EDGS with natural waxes without having drawbacks in properties like appearance, pearlizing effect, viscosity and / or storage stability.

[0007] For example, it has been observed that aqueous wax dispersions containing natural waxes (like hydrogenated rapeseed oil) and amphoteric surfactants show deficiencies in their storage stability, especially if the wax dispersions have been stored for several weeks and / or have been exposed to higher or lower temperatures. However, the wax dispersions themselves and personal care products containing them need to show good storage stability over several weeks without delamination or loss of pearlescence.

[0008] The object of the present invention is to provide an aqueous wax dispersion which is based exclusively on natural waxes and which shows an excellent pearlizing effect in a personal care composition. This pearlizing effect should be apparent at least by squeezing or pumping the personal care product out of a bottle, so that the user has a personal care product with a pearlescent sheen in his hands. The pearlizing effect after pumping or squeezing should be comparable or better than the effect without such pumping or squeezing.

[0009] Additionally, it was an object of the present invention to provide aqueous wax dispersions based exclusively on natural waxes and personal care formulations comprising them which have good storage stability at different temperatures and show a low and stable viscosity range, in particular after increasing or decreasing the temperature (swing temperature viscosity).

[0010] Furthermore, it is an object of the present invention to provide aqueous wax dispersions based exclusively on natural waxes which have excellent conditioning effects both per se and in personal care formulations for improved conditioning effects on hair and body. Hair care formulations with such wax dispersions should show improved wet combability, dry combability and / or reduced hair breakage after their use. In body care formulations, the use of such wax dispersions should result in a soft body feel.

[0011] In a particular embodiment, it is an object of the present invention to provide wax dispersions having such properties without comprising typical emulsifier or surfactant compounds containing alkylene oxides like ethylene oxide, and / or sulfate groups.

[0012] Additionally, it was an object of the present invention to provide aqueous wax dispersions based exclusively on natural waxes, which waxes have an extremely small particle size in the range of 0.1 to 0.5 μ in order to have excellent flow and pumping properties and a pearlizing effect.

[0013] Additionally, it was an object of the present invention to provide aqueous wax dispersions based exclusively on natural waxes which can be used in hair and body care formulations and which make it possible, if desired, to formulate hair and body care formulations which do not comprise surfactants comprising ethylene oxide units and / or sulfate groups, without losing their advantageous properties. Summary of the invention

[0014] The present invention provides aqueous dispersions of natural waxes which can be used as pearlescent agents in personal care formulations,

[0015] (a) natural waxes selected from the group consisting of 50 to 100 wt. % hydrogenated rapeseed oil,

[0016] (b) nonionic emulsifiers selected from the group consisting of linear fatty alcohols and monoglycerides

[0017] (c) amphoteric and / or zwitterionic surfactants

[0018] (d) optionally an additional nonionic surfactant different from (b),

[0019] (e) optional adjuvants or additives, including salts, and

[0020] (f) Water.

[0021] In the context of the present invention, "conditioners" are compositions in the field of cosmetic formulations which, when applied to the hair and / or skin, show a conditioning effect.

[0022] In the context of the present invention, a composition has a conditioning effect on the skin when it produces a positive skin feel after direct contact with human skin, which in practice is positively assessed by test subjects in panel tests for sensory impressions regarding specific parameters (such as "skin dryness", "skin softness").

[0023] In the context of the present invention, these compositions have a conditioning effect on the hair when they show improved combability after treatment thereof. Better combability can occur both in the wet and / or dry state, in the length and in the tips of the hair (known as detangling). Conditioning compositions also improve the tactile properties of the hair, such as smoothness, softness, suppleness, hair shine, lower static charge and better stylability or trimming.

[0024] In the context of the present invention, "hair breakage" means broken hair fibers.

[0025] In the context of the present invention, "pearlescent agent" means a compound or a formulation which has a pearlizing effect or a pearlescent appearance and provides a cosmetic product with sparkling, pearlescent and lustrous effects.

[0026] In the context of the present invention, the particle size in μm (d50 and / or d90) and the particle size distribution are determined by laser diffraction with a laser analyzer from MALVERN INSTRUMENTS GmbH, Marie-Curie-Straße 4 / 1, 71083 Herrenberg, Germany. 2000 instruments and corresponding product descriptions.

[0027] In the context of the present invention, the melting point is measured by using DSC: Differential Scanning Calorimetry.

[0028] In the context of the present invention, "natural waxes" are understood to mean substances of vegetable or animal origin in nature and having a melting point above 25° C., preferably above 50° C. and in particular above 80° C. The melting point is determined according to ISO 6321 21° C. The term "natural waxes" encompasses both waxes which are obtained by partial or complete hydrogenation of animal and / or vegetable origin in nature and waxes which occur as waxes in nature.

[0029] The wax dispersion according to the invention comprises

[0030] (a) Natural waxes selected from the group consisting of 50 to 100 wt % hydrogenated rapeseed oil.

[0031] This means that the natural wax may be a mixture of natural waxes comprising at least 50 wt% hydrogenated rapeseed oil, or hydrogenated rapeseed oil may be the only natural wax (100 wt%).

[0032] Hydrogenated rapeseed oil is a triglyceride of fatty acids in which the unsaturated fatty acids have been hydrogenated, ie converted into saturated fatty acids.

[0033] Typical examples of natural waxes are candelilla wax, carnauba wax, Japan wax, esparto grasswax wax, cork wax, guaruma wax, rice bran wax, sugar cane wax, carnauba wax, shea butter (Butyrospermum Parkii), beeswax, shellac wax, sunflower wax, sumach wax, spermaceti, lanolin (wool wax), tail oil, ceresin, ozokerite (earth wax) or hydrogenated jojoba wax or hydrogenated rapeseed oil.

[0034] According to the present invention, at least 50 wt % to 100 wt %, especially 100 wt %, based on the natural wax is hydrogenated rapeseed oil; that is, it is preferred that the natural wax (a) is selected from the group consisting of hydrogenated rapeseed oil.

[0035] Preferred according to the invention is hydrogenated rapeseed oil as natural wax, which contains at least 90 wt. % of triglycerides of a saturated fatty acid mixture, based on hydrogenated rapeseed oil, the saturated fatty acid mixture consisting of 0-10 wt. % C16 fatty acids, 35-45 wt. % C18 fatty acids, 5-15 wt. % C20 fatty acids and 40-50 wt. % C22 fatty acids.

[0036] Up to 10 wt. %, based on the hydrogenated rapeseed oil, of by-products may be in the hydrogenated rapeseed oil, these by-products like diesters or polyglycerol esters or glycerol esters of unsaturated C16-C22 fatty acids.

[0037] However, particularly preferred according to the invention is hydrogenated rapeseed oil which contains more than 90 wt. %, more preferably 95-100 wt. % of triglycerides of a fatty acid mixture consisting (wt. %) of: based on the fatty acids,

[0038]

[0039] An example of a commercially available hydrogenated rapeseed oil product is BASF's HF62.

[0040] The wax dispersion according to the invention contains the natural wax (a) preferably in an amount ranging from 15 to 40% by weight, particularly preferably 15-25% by weight, based on the wax dispersion.

[0041] The wax dispersion of the present invention contains (b) a nonionic emulsifier selected from the group consisting of linear fatty alcohols and monoglycerides.

[0042] According to the invention, a linear fatty alcohol is a fatty alcohol without branching on CC. Examples of linear fatty alcohols are linear fatty alcohols and / or hydroxy fatty alcohols containing 12 to 22 carbon atoms, preferably linear saturated fatty alcohols and / or hydroxy fatty alcohols having 16 and / or 18 carbon atoms. Particularly preferred is a fatty alcohol mixture of 50:50 (wt.) cetyl alcohol:stearyl alcohol, which is used as O is commercially available from BASF personal Care and Nutrition GmbH.

[0043] Examples of monoglycerides are monoglycerides of fatty acids, in particular linear and / or branched fatty acids having 12 to 22 carbon atoms and / or linear and / or branched hydroxy fatty acids having 12-18 carbon atoms, such as hydroxystearic acid monoglyceride, isostearic acid monoglyceride, oleic acid monoglyceride, ricinoleic acid monoglyceride, linoleic acid monoglyceride, linolenic acid monoglyceride, stearic acid monoglyceride and / or oleostearic acid monoglyceride. Preferred are monoglycerides of linear saturated and / or unsaturated fatty acids, in particular glyceryl monostearate and / or glyceryl monooleate.

[0044] Particularly preferred in the context of the invention are nonionic emulsifiers b) selected from the group consisting of glycerol monoesters of linear saturated and / or unsaturated fatty acids, in particular glycerol monostearate and / or glycerol monooleate.

[0045] Among these products, technical esters of fatty acid monoglycerides are particularly preferred, which, due to the manufacturing process, may still contain small amounts of glycerol and / or diglycerides and / or triglycerides. Preferred esters are technical mixtures of fatty acid monoglycerides, which have a monoglyceride content in the range of 50 to 95 wt.-%, preferably 60 to 90 wt.-%. Particularly preferred are monofatty acid esters of (technical) glycerol and a fatty acid mixture containing 90 to 100 wt.-% oleic acid, based on the fatty acid mixture.

[0046] Such industrial monoolein is available, for example, from BASF Personal Care & Nutrition GmbH as 90 / 18 is commercially available.

[0047] According to the invention, it is preferred that the wax dispersion contains the nonionic emulsifier b) in an amount in the range from 0.5 to 5.0% by weight, based on the wax dispersion.

[0048] According to the invention, the wax dispersion additionally contains an amphoteric and / or zwitterionic surfactant (c), which is preferably selected from the group consisting of betaines and / or amphoacetates.

[0049] Betaines are known surfactants which are produced primarily by carboxyalkylation, preferably carboxymethylation, of amino compounds. The starting material is preferably condensed with a halocarboxylic acid or a salt thereof, more particularly with sodium chloroacetate. Examples of suitable betaines are carboxyalkylation products of secondary and especially tertiary amines corresponding to formula (I):

[0050]

[0051] Where R 1 represents an alkyl group and / or an alkenyl group containing 6 to 22 carbon atoms, R 2 represents hydrogen or an alkyl group containing 1 to 4 carbon atoms, R 3represents an alkyl group containing 1 to 4 carbon atoms, n is a number from 1 to 6, and X is an alkali metal and / or alkaline earth metal or ammonium. Typical examples are hexylmethylamine, hexyldimethylamine, octyldimethylamine, decyldimethylamine, dodecylmethylamine, dodecyldimethylamine, dodecylethylmethylamine, C 12 / 14 Coconut oil alkyl dimethylamine, myristyl dimethylamine, cetyl dimethylamine, stearyl dimethylamine, stearyl ethyl methylamine, oleyl dimethylamine, C 16 / 18 Carboxymethylation products of tallow alkyl dimethylamine and its technical mixtures.

[0052] Other suitable betaines are the carboxyalkylation products of the amidoamines corresponding to the formula (II):

[0053]

[0054] Where R 6 CO is an aliphatic acyl group containing 6 to 22 carbon atoms and 0 or 1 to 3 double bonds, m is a number from 1 to 3, R 4 Represents hydrogen or C 1-4 Alkyl, R 5 Represents C 1-4 alkyl, n is a number from 1 to 6, and X is an alkali metal and / or alkaline earth metal or ammonium. Typical examples are the reaction products of fatty acids containing 6 to 22 carbon atoms (i.e. caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid, elaeolic acid, arachidic acid, eicosenoic acid, behenic acid and erucic acid and technical mixtures thereof) with N, N-dimethylaminoethylamine, N, N-dimethylaminopropylamine, N, N-diethylaminoethylamine and N, N-diethylaminopropylamine (which is condensed with sodium chloroacetate). Preferably, C 8 / 18 Condensation product of coconut fatty acid-N,N-dimethylaminopropylamide with sodium chloroacetate, the condensation product being known under the CTFA name cocamidopropyl betaine. Betaines characterized by a high purity are particularly preferred; in other words, low-salt betaines with a maximum salt content of 13% by weight, preferably 11% by weight and more particularly 7% by weight, based on the active substance, are used. The corresponding salt depends on the production of the amphoteric surfactant; in the most common case it is sodium chloride. In particularly preferred embodiments, these betaines also have a low content of free fatty acids of at most 4% by weight and preferably at most 3% by weight, based on the active substance.

[0055] In addition, imidazolinium betaines are also included. These substances are also known substances, which can be obtained, for example, by cyclocondensation of 1 or 2 mol of fatty acids with polyfunctional amines such as aminoethylethanolamine (AEEA) or diethylenetriamine. The corresponding carboxyalkylation products are mixtures of different open-chain betaines. Typical examples are condensation products of the above-mentioned fatty acids with AEEA, preferably based on lauric acid or another C 12 / 14 -Imidazolinium of coconut fatty acid which was subsequently betained with sodium chloroacetate.

[0056] Suitable cocamidopropyl betaine is commercially available, such as PK 45 (supplied by BASF Personal Care & Nutrition).

[0057] It is preferred that the wax dispersion according to the invention contains the surfactant c) in an amount in the range of 10 to 25 wt % based on the weight of the wax dispersion.

[0058] According to the invention, the wax dispersion may contain optional nonionic surfactants (d) which are different from (b) and are preferably selected from the group consisting of alkyl and / or alkenyl polyglucosides and alkyl and / or alkenyl glucamides.

[0059] Alkyl and / or alkenyl polyglycosides are known nonionic surfactants, these nonionic surfactants have in particular the formula (III),

[0060] RO-[G]p (III)

[0061] in

[0062] - R is an alkyl / alkenyl group having 6 to 22 carbon atoms,

[0063] -G is a sugar group having five or six carbon atoms, and

[0064] -p is a number from 1 to 10.

[0065] They can be obtained by relevant methods of preparative organic chemistry. Alkyl / alkenyl polyglycosides can be derived from aldoses or ketoses with 5 or 6 carbon atoms, preferably derived from glucose. Therefore, preferred alkyl polyglycosides are alkyl polyglucosides. The index p in the general formula (III) specifies the degree of polymerization (DP), i.e. the distribution of monoglycosides and polyglycosides, and is a number between 1 and 10. Although p in a given compound must always be an integer and it can be particularly assumed that p value = 1 to 6, the p value of a specific alkyl / alkenyl polyglycoside is an analytically determined calculation parameter, which is a fraction in most cases. Preferably, an alkyl / alkenyl polyglycoside with an average degree of polymerization p of 1.1 to 3.0 is used. Preferred are those from the viewpoint of industrial application, wherein the degree of polymerization is less than 1.7 and in particular between 1.2 and 1.7.

[0066] The alkyl and / or alkenyl radicals R can be derived from primary alcohols having 6 to 22, preferably 6 to 18, carbon atoms. Typical examples are hexanol, octanol, decanol and undecanol, lauryl alcohol, myristyl alcohol, cetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidic alcohol, petroselinol, arachidyl alcohol, eicosene alcohol, behenyl alcohol, erucyl alcohol, brassidyl alcohol and also technical grade mixtures thereof.

[0067] In the context of the present invention, particular preference is given to mixtures of alkyl polyglycosides of formula (III), wherein R is derived from a saturated primary alcohol mixture, for example a primary alcohol mixture comprising 10 to 50% by weight of C8 / C10 primary alcohols and 50 to 90% by weight of C12 to C16 saturated primary alcohols. It is further preferred for R to be derived from a saturated primary alcohol mixture comprising 75 to 95% by weight of higher primary alcohols having 10 to 22 carbon atoms, in particular from a fatty acid mixture obtained from coconut, preferably 12 to 16 carbon atoms.

[0068] Suitable products are 2000 and 818, both available from BASF Personal Care Nutrition GmbH.

[0069] So-called "alkyl and / or alkenyl glucamides" or "N-alkyl / alkenyl glucamides" are known products and are derived from glucuronic acid and fatty acids. Preference is given to N-alkyl glucamides derived from lauric acid, myristic acid, palmitic acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid and technical mixtures thereof. Particular preference is given to using N-methyl glucamide and in particular based on technical C12-C14-coconut fatty acid fractions. Suitable products are available from Clariant Foam or Sense.

[0070] According to the invention, the wax dispersion contains a nonionic surfactant (d) different from (b) preferably in an amount ranging from 0 to 5% by weight, based on the wax dispersion. According to one embodiment, the inventive wax dispersion contains no nonionic surfactant d).

[0071] According to the invention, the wax dispersion may contain further auxiliaries or additives (e), including salts, preferably in an amount ranging from 0.1 to 15% by weight, based on the wax dispersion.

[0072] Examples of other adjuvants are thickeners, complexing agents, non-aqueous solvents, preservatives, salts and / or pH adjusters. It is preferred not to add any salt, but depending on the production of the betaine surfactant (c), low levels of salt (like sodium chloride) or low levels of free fatty acids may be possible by-products.

[0073] Generally, it is advantageous to use preservatives like benzoic acid and / or pH adjusters like citric acid to adjust the pH as required. According to the invention, it is preferred that only preservatives and / or pH adjusters and / or salts are present as auxiliaries, but more auxiliaries may be added.

[0074] According to the invention, the wax dispersions are aqueous dispersions and are characterized in that these wax dispersions contain water (f) in an amount making up to 100% by weight, based on the wax dispersion.

[0075] According to a preferred embodiment of the present invention, the wax dispersion contains

[0076] a) a natural wax selected from the group consisting of hydrogenated rapeseed oil comprising at least 90 wt. % of triglycerides of a fatty acid mixture based on hydrogenated rapeseed oil, the fatty acid mixture comprising 0-10 wt. % C16 fatty acids, 35-45 wt. % C18 fatty acids, 5-15 wt. % C20 fatty acids and 40-50 wt. % C22 fatty acids

[0077] b) nonionic emulsifiers selected from the group consisting of monoglycerides of fatty acids, in particular glyceryl monostearate and / or glyceryl monooleate

[0078] c) amphoteric and / or zwitterionic surfactants selected from the group consisting of betaines and / or amphoacetates, and

[0079] d) optionally a nonionic surfactant different from (b), selected from the group consisting of alkyl / alkenyl polyglucosides and alkyl / alkenyl glucamides

[0080] (e) other adjuvants or additives, including salts, and

[0081] (f) Water.

[0082] According to a more preferred embodiment of the present invention, the aqueous wax dispersion contains a wax dispersion based on

[0083] a) 15-40 wt% of a natural wax selected from the group consisting of hydrogenated rapeseed oil comprising at least 90 wt% of triglycerides of a fatty acid mixture based on hydrogenated rapeseed oil, the fatty acid mixture comprising 0-10 wt% C16 fatty acids, 35-45 wt% C18 fatty acids, 5-15 wt% C20 fatty acids and 40-50 wt% C22 fatty acids

[0084] b) 0.5 to 5.0 wt% of nonionic emulsifiers selected from the group consisting of monoglycerides of fatty acids, especially glyceryl monostearate and / or glyceryl monooleate.

[0085] c) 10.0 to 25.0 wt% of amphoteric and / or zwitterionic surfactants selected from the group consisting of betaines and / or amphoteric acetates, especially cocamidopropyl betaine

[0086] d) 0.0 to 5.0 wt% of a nonionic surfactant different from (b), selected from the group consisting of alkyl / alkenyl polyglucosides and alkyl / alkenyl glucamides;

[0087] e) 0.1 to 15 wt % of other auxiliaries or additives, including salts, in particular preservatives and / or pH regulators and / or salts, and

[0088] (f) Make up to 100 wt% of water.

[0089] According to the most preferred embodiment of the present invention, the aqueous wax dispersion consists of: based on the wax dispersion,

[0090] a) 15-40 wt% of a natural wax selected from the group consisting of hydrogenated rapeseed oil comprising at least 90 wt% of triglycerides of a fatty acid mixture based on hydrogenated rapeseed oil, the fatty acid mixture comprising 0-10 wt% C16 fatty acids, 35-45 wt% C18 fatty acids, 5-15 wt% C20 fatty acids and 40-50 wt% C22 fatty acids

[0091] b) 0.5 to 5.0 wt% of nonionic emulsifiers selected from the group consisting of monoglycerides of fatty acids, especially glyceryl monostearate and / or glyceryl monooleate.

[0092] c) 10.0 to 25.0 wt% of amphoteric and / or zwitterionic surfactants selected from the group consisting of betaines and / or amphoteric acetates, especially cocamidopropyl betaine

[0093] (e) 0.1 to 15 wt % of other auxiliaries or additives, including salts, in particular preservatives and / or pH regulators and / or salts, and

[0094] (f) Make up to 100 wt% of water.

[0095] Particularly preferred are aqueous wax dispersions which are substantially free of components containing one or more ethylene oxide and / or propylene oxide units, i.e., free of one or more ethylene oxide and / or one and / or more propylene oxide adducts as components of the wax dispersion. This includes aqueous wax dispersions which are substantially free of components containing ethylene glycol or propylene glycol or derivatives such as ethylene glycol monostearate or distearate or glycol ether compounds.

[0096] Additionally, preferred are waxes as defined in a), especially the natural wax hydrogenated rapeseed oil having a An average particle size d50 of 0.1 to 1.0 μm, especially 0.1 to 0.2 μm, measured via laser diffraction.

[0097] Another object of the present invention is a process for producing an aqueous wax dispersion as claimed in claim 1, characterized in that components (a), (b) and (c) and / or optionally (d) are added to a portion of the total water (f), the mixture is heated to about 85°C to 95°C with stirring, cooled to about 40°C to 60°C, and then component (e) and the remaining part of the water (f) are added.

[0098] Another object of the present invention is the use of an aqueous wax dispersion as claimed in claim 1 or obtained according to the process claim of the invention as a pearlescent agent in personal care compositions for hair and body treatment, in an amount of 0.1 to 5% by weight, calculated as aqueous wax dispersion and based on the personal care composition.

[0099] Another object of the present invention is the use of an aqueous wax dispersion as claimed in claim 1 or obtained according to the process claim of the invention as a conditioning agent in a personal care composition for hair treatment, in particular for improving dry and / or wet combability, the amount of the aqueous wax dispersion preferably being 0.1% to 5% by weight, calculated as aqueous wax dispersion and based on the personal care composition.

[0100] An additional object of the present invention is the use of an aqueous wax dispersion as claimed in claim 1 or obtained according to the process claim of the invention as a conditioning agent in a personal care composition for body treatment, in particular for improving the sensory feel of the body, the amount of the aqueous wax dispersion preferably being 0.1% to 5% by weight calculated as aqueous wax dispersion and based on the personal care composition.

[0101] Preferably, the aqueous wax dispersions as claimed are used in personal care compositions for hair and / or body treatment, these aqueous wax dispersions being substantially free of components containing one or more ethylene oxide and / or propylene oxide units.

[0102] Preferably, the aqueous wax dispersions as claimed are used in personal care compositions for hair and / or body treatment, these aqueous wax dispersions being substantially free of surfactants containing sulfate groups.

[0103] A further object of the present invention is a personal care composition for hair and / or body treatment comprising

[0104] A) 0.1 wt% to 5 wt%, in particular 0.25 wt% to 3 wt% of the aqueous dispersion according to claim 1 or 18, calculated as aqueous wax dispersion and based on the personal care composition, and

[0105] B) one or more detersive surfactants selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric or zwitterionic surfactants, and

[0106] C) optional cationic polymers and

[0107] D) Optional other adjuvants or additives, including salt and water.

[0108] Personal care compositions are understood here to mean all compositions known to the person skilled in the art, which are intended exclusively or primarily for external application to the human body and / or hair for cleaning, caring for, protecting and maintaining good condition, for fragrance, for changing the appearance or for producing an effect. Preferably, the personal care composition may be a foam bath, a shower gel, a shower lotion, a shower milk, a shower cream, a shampoo, a hair mask, a hair milk and a hair conditioner or a shampoo or body soap.

[0109] Component A) is the wax dispersion according to the invention, which has been described in detail above.

[0110] Component B) is a surfactant or a surfactant mixture selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric or zwitterionic surfactants.

[0111] Examples of anionic surfactants are soaps, alkylbenzenesulfonates, alkylsulfonates, olefinsulfonates, alkylethersulfonates, glycerylethersulfonates, estersulfonates, sulfofatty acids, alkyl sulfates, fatty alcohol ether sulfates, glycerylether sulfates, fatty acid ether sulfates, hydroxy mixed ether sulfates, glycerol monoester (ether) sulfates, fatty acid amide (ether) sulfates, sulfosuccinic acid monoalkyl and dialkyl ester salts, sulfosuccinamic acid monoalkyl and dialkyl ester salts, sulfotriglycerides, amide soaps, ether carboxylic acids and their salts, fatty acid isethionates, fatty acid sarcosinates, fatty acid taurates, N-acylamino acid salts such as N-acylaminoglutamates or N-acylamino, alkyl polyglucoside sulfates, alkyl- and / or alkenyl polyglucoside carboxylates, alkyl (alkenyl) polyethylene glycol ether citrates, protein fatty acid condensates (which are C8-C 30 -Condensation products of fatty acids with protein hydrolysates e.g. ) and alkyl (ether) phosphates. Typically, the alkyl and / or alkenyl radicals have 8 to 30, in particular 12 to 24, carbon atoms. If the anionic surfactants contain polyglycol ether chains, these can have a conventional homolog distribution, but they preferably have a narrow homolog distribution.

[0112] Alkyl ether sulfates ("ether sulfates") are known anionic surfactants which are produced on the industrial scale by SO3 or chlorosulfonic acid (CSA) sulfation of fatty alcohol polyglycol ethers or oxygen-containing alcohol polyglycol ethers and subsequent neutralization. The ether sulfates can have both conventional homolog distributions and narrow homolog distributions. Particular preference is given to using ether sulfates based on adducts of an average of 1 to 6 mol and preferably 1 to 3 mol of ethylene oxide to industrial C12 / 14 or C12 / 18 coconut fatty alcohol fractions in the form of their sodium and / or magnesium salts.

[0113] Alkyl sulfates ("sulfates") are known anionic surfactants based on alcohols. These products are commercially available. Preference is given to using sulfates based on fatty alcohols having 12 to 18 carbon atoms and very particularly on technical C12 / 14 or C12 / 18 coconut fatty alcohol fractions, in the form of their sodium and / or ammonium salts.

[0114] Further anionic surfactants useful in the context of the present invention are α-sulfofatty acid disalts according to formula (IV)

[0115] R7CH(SO3M1)COOM2 (IV),

[0116] Wherein the radical R7 is a straight-chain or branched alkyl or alkenyl radical having 6 to 18 carbon atoms, and the radicals M1 and M2 are independently selected from the group comprising H, Li, Na, K, Ca / 2, Mg / 2, ammonium and alkanolamine. In this respect, particularly preferred alkanolamines are monoethanolamine, diethanolamine, triethanolamine and monoisopropanolamine.

[0117] In a preferred embodiment, the group R7 in formula (IV) is a saturated straight-chain alkyl group having 10 to 16 carbon atoms. The groups M1 and M2 in formula (IV) are preferably selected from the group comprising H (hydrogen) and Na (sodium). These compounds can be prepared by all methods appropriately known to those skilled in the art.

[0118] A particularly preferred preparation method here is the sulfation of the corresponding carboxylic acids. Here, the corresponding carboxylic acids and in particular the corresponding fatty acids are reacted with gaseous sulfur trioxide, which is preferably used in such an amount that the molar ratio of SO3 to fatty acid is in the range from 1.v:1 to 1.1:1. The crude product obtained in this way (which is an acidic sulfation product) is then partially or completely neutralized, preferably completely neutralized with aqueous NaOH. If desired, purification steps and / or bleaching (for adjusting the desired light color of the product) can also be carried out. Preferred α-sulfonated fatty acid disalts are technical-grade mixtures of α-sulfonated fatty acid disalts which are available from BASF Personal Care Nutrition GmbH as Texapon Commercially available.

[0119] Other possible anionic surfactants are alkyl (en)yl polyglycol ether citrates, in particular mixtures of monoesters, diesters and triesters of citric acid with alkoxylated alcohols, with particular preference being given to using alkyl polyalkylene glycol ether citrates which are addition products of 5 to 10, in particular about 7 mol, of ethylene oxide onto technical grade C12-C18-, in particular C12-C14-fatty alcohol fractions. Very particular preference is given to polyglycol ethers of lauryl alcohol, namely laureth-7 citrate, which is available, for example, under the name LC7 (BASF & Personal Care & Nutrition GmbH) is available.

[0120] Further anionic surfactants useful in the context of the present invention are N-acylamino acid salts. N-acylamino acid salts are known products and can be prepared in different ways, for example using Schotten-Baumann chemistry from the corresponding fatty acid chlorides and amino acid salts or from the corresponding fatty acids and amino alcohols to give fatty amides which are then oxidized to give N-acylamino acid salts, or by contacting aminocarboxylic acids or their metal salts with lower alkyl carboxylates in the presence of alkali metal or alkaline earth metal alcoholates according to U.S. Pat. No. 4,380,646, or by reacting mono-, di- or triglycerides with amino acid salts in the presence of a strong base according to WO 97 / 03043.

[0121] Preferred N-acylamino acid salts are selected from the group consisting of sodium cocoyl glycinate, sodium myristyl glycinate, sodium lauryl glycinate, sodium cocoyl glutamate, sodium myristyl glycinate, sodium lauryl glutamate and / or their disalts and / or combinations thereof, especially sodium cocoyl glutamate and disodium cocoyl glutamate, which are used as ACG 50 is available from BASF Personal Care Nutritionals GmbH.

[0122] In the context of the present invention, additional useful anionic surfactants are selected from the group consisting of alkyl- and / or alkenyl polyglucoside carboxylates. Alkyl- and / or alkenyl polyglucoside carboxylates are known products and can be prepared according to WO 02 / 090369 from alkyl- and / or alkenyl polyglucosides and omega-halocarboxylic acids in the presence of alkali metal hydroxides. Particularly preferred is sodium lauryl glucose carboxylate.

[0123] Furthermore, suitable anionic surfactants are protein fatty acid condensates, which can be prepared by all methods appropriately known to the person skilled in the art, for example reaction of the corresponding fatty acid chlorides with hydrolyzed proteins in an alkaline medium. Useful are C12-C24 fatty acid condensation products of protein hydrolysates, in particular protein hydrolysates based on wheat or soy or rice, very particularly C12-C24 condensation products of soy protein hydrolysates, which are available from BASF Personal Care Nutrition GmbH as Soy is commercially available.

[0124] Very preferred anionic surfactants according to the invention are selected from the group consisting of alkyl sulfates, N-acylamino acid salts, alkyl- and / or alkenyl polyglucoside carboxylates and protein fatty acid condensates.

[0125] Examples of nonionic surfactants are

[0126] - addition products of 2 to 50 mol of ethylene oxide and / or 0 to 20 mol of propylene oxide onto linear fatty alcohols having 8 to 40 C atoms, fatty acids having 12 to 40 C atoms and alkylphenols having 8 to 15 C atoms in the alkyl group;

[0127] -1 to 50 mol of addition product of ethylene oxide onto glycerol 12 / 18 - fatty acid monoesters and / or diesters;

[0128] - Partial esters of glycerol, such as C12 / 18 fatty acid monoesters and / or diesters of glycerol

[0129] - C12 / 18 fatty acid monoesters and / or diesters of monoesters and diesters of sorbitol

[0130] - alkyl mono- and / or polyglycosides having 8 to 22 carbon atoms in the alkyl group and their optionally ethoxylated analogs;

[0131] - 7 to 60 mol of ethylene oxide addition products onto castor oil and / or hydrogenated castor oil;

[0132] - polyols and / or polyglycerol esters, such as, for example, polyglycerol diisostearate or polyglycerol dimerate or polyglycerol 12-hydroxystearate;

[0133] - addition products of 2 to 15 mol of ethylene oxide on castor oil and / or hydrogenated castor oil;

[0134] -Based on straight chain, branched, unsaturated or saturated C6-C 22 - partial esters of fatty acids, ricinoleic acid and 12-hydroxystearic acid with pentaerythritol, dipentaerythritol, sugar alcohols (e.g. sorbitol), alkyl glucosides (e.g. methyl glucoside, butyl glucoside, lauryl glucoside) and polyglucosides (e.g. cellulose), or mixed esters, such as, for example, glyceryl stearate citrate and glyceryl stearate lactate;

[0135] -Wool wax alcohol;

[0136] -amino-sugars, such as, for example, glucosamine.

[0137] -Polyalkylene glycol.

[0138] The addition products of ethylene oxide and / or propylene oxide on fatty alcohols, fatty acids, alkylphenols, glycerol monoesters and diesters and sorbitol monoesters and diesters of fatty acids or on castor oil are known, commercially available products. These are homologous mixtures with an average degree of alkoxylation of 1 to 50 mol % of ethylene oxide.

[0139] Advantageous compounds from the group of nonionic surfactants are partial esters of polyols, in particular partial esters of C3-C6-polyols, such as, for example, monoglyceride, partial esters of pentaerythritol or sugar esters, for example sucrose or sorbitol esters.

[0140] Preferred partial esters of polyols are monoesters and / or diesters of fatty acids of glycerol, in particular monoesters and / or diesters of straight-chain and / or branched fatty acids having 12 to 22 carbon atoms and / or straight-chain and / or branched hydroxy fatty acids having 12 to 18 carbon atoms, such as hydroxystearic acid monoester, isostearic acid monoester, oleic acid monoester, ricinoleic acid monoester, linoleic acid monoester, stearic acid monoester and / or oleostearic acid monoester. Preferred are monoesters of straight-chain saturated and / or unsaturated fatty acids, in particular glyceryl monostearate and / or glyceryl monooleate.

[0141] Very preferred is industrial glycerol monooleate, which has already been disclosed in more detail as component b) of the wax dispersion of the invention and is available, for example, from BASF Personal Care & Nutrition GmbH as 90 / 18 is commercially available.

[0142] Additional useful nonionic surfactants are polyglycerol esters of fatty acids (optionally with additional hydroxyl groups), such as the reaction products of poly-12-hydroxystearic acid with polyglycerol, which have already been disclosed in more detail as component b) of the wax dispersions according to the invention and are available, for example, from BASF Personal Care & Nutrition GmbH under the name PGPH is commercially available.

[0143] Alkyl and / or alkenyl polyglycosides can be used as component B) in particular as nonionic surfactants in the context of personal care compositions. Alkyl and / or alkenyl polyglycosides have been disclosed as optional component d) of the wax dispersion of the present invention (see formula (III) and the description). The nonionic surfactants that can be used as component B) are C8-C 22 - alkyl mono- and polyglycosides, preferably with 8 to 18 carbon atoms for the alkyl radical R and a degree of polymerization G in the range of 1.2 to 1.7. Very preferred are the same C8-C22-alkyl mono- and polyglycosides as discussed above as optional component d), i.e. particularly preferred are mixtures of alkyl polyglycosides of formula (III), in which R is derived from a saturated primary alcohol mixture, for example a primary alcohol mixture comprising 10 to 50% by weight of C8 / C10 primary alcohols and 50 to 90% by weight of C12 to C16 saturated primary alcohols. For R, it is further preferred that it is derived from a saturated primary alcohol mixture comprising 75 to 95% by weight of higher primary alcohols having 10 to 22 carbon atoms, in particular from a fatty acid mixture obtained from coconut, preferably 12 to 16 carbon atoms. Suitable products are 2000 and 818, both available from BASF Personal Care Nutrition GmbH.

[0144] Useful nonionic surfactants (so-called "alkyl glucamides" or "N-alkyl glucamides") are known products and have already been discussed in the context of optional component d) of the wax dispersion. The same products as mentioned for d) are preferred as nonionic surfactants B).

[0145] Preferred nonionic surfactants B) according to the invention are selected from the group consisting of monoesters of fatty acids with glycerol and alkyl and / or alkenyl polyglycosides and very preferably glyceryl monostearate, glyceryl monooleate and C8-C22-alkyl mono- and polyglucosides, wherein the degree of polymerization G is from 1.2 to 1.7.

[0146] Examples of amphoteric and / or zwitterionic surfactants as component B) have already been disclosed in the context of component c) as amphoteric acetates and / or betaines corresponding to formulae (II) and (I). Preferred betaines corresponding to formula (I) are alkyl dimethyl betaines, especially where the alkyl group is based on coconut. Preferred amphoteric acetates corresponding to formula (II) are condensation products of fatty acids-N,N-dimethylaminopropylamide with sodium chloroacetate, especially condensation products of coconut-based fatty acids, known under the INCI name Cocamidopropyl Betaine.

[0147] According to one embodiment of the present invention, the personal care composition comprises one or more cleaning surfactants selected from the group consisting of alkyl sulfates, N-acyl amino acid salts, alkyl- and / or alkenyl polyglucoside carboxylates, protein fatty acid condensates, monoesters of fatty acids and glycerol, alkyl and / or alkenyl polyglycosides, alkyl dimethyl betaines, condensation products of fatty acids-N,N-dimethylaminopropylamide and sodium chloroacetate, especially selected from the group consisting of N-acyl amino acid salts, monoesters of fatty acids and glycerol, alkyl and / or alkenyl polyglycosides, alkyl dimethyl betaines, condensation products of fatty acids-N,N-dimethylaminopropylamide and sodium chloroacetate.

[0148] Preference is given to using anionic, amphoteric and / or zwitterionic surfactants and / or nonionic surfactants B) in a total amount of 1.0 to 30 wt. %, in particular 5.0 to 25.0 wt. %, calculated as active substance and based on the personal care composition.

[0149] Optional component C) is a cationic polymer. Useful cationic polymers include cationic guar gum polymers, cationic non-guar galactomannan polymers, cationic tapioca polymers, cationic copolymers of acrylamide monomers and cationic monomers, and / or synthetic non-crosslinked cationic polymers. Suitable cationic polymers are, for example, cationic cellulose derivatives such as those available from Amerchol under the name Polymer JR Available quaternized hydroxyethylcellulose, cationic starch, copolymers of diallyl ammonium salts and acrylamide, quaternized vinyl pyrrolidone / vinylimidazole polymers such as (BASF), condensation products of polyglycols and amines, quaternized collagen polypeptides such as lauryl dimethyl ammonium hydroxypropyl hydrolyzed collagen ( L, Grüünau), quaternized wheat polypeptides, polyethyleneimine, cationic silicone polymers such as amodimethicone, copolymers of adipic acid and dimethylaminohydroxypropyldiethylenetriamine ( Sandoz, Copolymer of acrylic acid and dimethyldiallylammonium chloride ( 550, Chemviron), polyaminopolyamides and crosslinked water-soluble polymers thereof, cationic chitin derivatives such as, for example, quaternized chitosan optionally in microcrystalline distribution, condensation products of dihaloalkyl (e.g., dibromobutane) and bis-dialkylamine (e.g., bis-dimethylamino-1,3-propane), cationic guar gum such as, for example, Celanese's CBS, C-17, C-16, quaternized ammonium salt polymers such as Miranol A-15, AD-1, AZ-1.

[0150] In particular, the personal care composition may comprise a cationic polymer selected from the group consisting of cationically modified cellulose derivatives (PQ 10, PQ67), cationically modified guar gum derivatives such as GuarN, guar hydroxypropyltrimonium chloride, cationic homopolymers or copolymers based on acrylamide, cationic homopolymers or copolymers based on vinylpyrrolidone, cationic homopolymers or copolymers based on quaternized vinylimidazole, and cationic homopolymers based on methacrylate.

[0151] In particular, there are cationically modified guar gum derivatives, preferably 2-hydroxy-3-(trimethylammonium) propyl chloride guar gum; INCI: guar hydroxypropyltrimonium chloride; which is marketed by BASF Personal Care Nutrition Ltd. as Guar N is commercially available.

[0152] In personal care compositions, such cationic polymers are preferably used in amounts of 0 to 5 wt%, in particular 0.01 to 1.0 wt%, - and in personal care compositions for hair treatment like shampoos or conditioners, such cationic polymers are preferably used in amounts of 0.1 to 0.5 wt%, calculated as active substance and based on the personal care composition.

[0153] The optional component D) depends on the end-user application of the personal care composition and may comprise a range of further adjuvants and additives such as, for example, water, conditioning agents, pearlescent agents, viscosity reducers, thickeners, salts, humectants, lipid layer enhancers, superfatting agents, stabilizers, polymers, fats, waxes, lecithin, protein hydrolysates, phospholipids, bioactive ingredients, UV sunscreen factors, antioxidants, antiperspirants, antidandruff agents, film formers, swelling agents, hydrotropes, solubilizers, preservatives, fragrance oils, dyes, etc.

[0154] To reduce the viscosity, the personal care composition may additionally contain polyols as an optional component. Suitable polyols preferably contain 2 to 15 carbon atoms and at least two hydroxyl groups and may be modified with nitrogen and / or amino groups. Typical examples are glycerol; alkylene glycols such as, for example, ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, hexylene glycol and polyethylene glycols having an average molecular weight of 100 to 1.000 daltons; technical polyglycerol mixtures having a degree of self-condensation of from 1.5 to 10, such as, for example, technical diglycerol mixtures having a diglycerol content of 40 to 50% by weight; methylol compounds such as, in particular, trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol and dipentaerythritol; lower alkyl glucosides, in particular those having 1 to 8 carbon atoms in the alkyl group, such as methyl glucoside and butyl glucoside; sugar alcohols having 5 to 12 carbon atoms, such as, for example, sorbitol or mannitol; amino sugars such as, for example, glucosamine; diolamines such as diethanolamine or 2-aminopropane-1,3-diol.

[0155] The polyol is used in an amount of typically 0.1% to 10% by weight, preferably 0.5% to 5% by weight, based on the personal care composition. If a larger amount of a polyol, preferably glycerol or ethylene glycol, is used, the personal care composition is simultaneously stabilized against microbial infestation. Additionally, if glycerol is used, it has an additional role as a humectant in the personal care composition.

[0156] For personal care compositions using oils like shower oils or bath oils, it is recommended to use, for example, Guerbet alcohols based on fatty alcohols containing 6 to 18 carbon atoms, esters of linear C6-22 fatty acids with linear C6-22 fatty alcohols, esters of branched C6-13 carboxylic acids with linear C6-22 fatty alcohols, esters of linear C6-22 fatty acids with branched alcohols (like 2-ethylhexanol), esters of hydroxycarboxylic acids with linear or branched C6-22 fatty alcohols, triglycerides based on C6-10 fatty acids, liquid mono / di / triglyceride mixtures based on C6-18 fatty acids, esters of C6-22 fatty alcohols and / or Guerbet alcohols with aromatic carboxylic acids, vegetable oils, branched primary alcohols, C6-22 fatty alcohol carbonates, Guerbet carbonates, esters of benzoic acid and / or dialkyl ethers containing 6 to 22 carbon atoms per alkyl group.

[0157] Superfatting agents can be chosen from substances such as, for example, lanolin and lecithin and also polyethoxylated or acylated lanolin and lecithin derivatives, polyol fatty acid esters, monoglycerides and fatty acid alkanolamides which also serve as foam stabilizers.

[0158] The lipid layer enhancer may be selected from polyethylene glycol glycerides, mixtures of dicaprylyl ether and fatty alcohols, polyglycerol poly-12-hydroxystearate and / or mixtures of alkyl polyglucosides and monoglycerides.

[0159] The consistency factors used are mainly fatty alcohols or hydroxyfatty alcohols and also partial glycerides, fatty acids or hydroxyfatty acids having 12 to 22, preferably 16 to 18, carbon atoms. Preference is given to using these substances in combination with alkyl polyglucosides of the same chain length and / or fatty acid N-methylglucamides, and / or polyglycerol poly-12-hydroxystearate.

[0160] Suitable thickeners are, for example, Aerosil types (hydrophilic silicon dioxide), polysaccharides, more particularly xanthan gum, guar-guar, agar-agar, alginates and tylose, carboxymethylcellulose and hydroxyethylcellulose, and also polyethylene glycol monoesters and diesters of relatively high molecular weight fatty acids, polyacrylates (e.g. [Goodrich] or [Sigma]), polyacrylamide, polyvinyl alcohol and polyvinyl pyrrolidone, and electrolytes such as sodium chloride and ammonium chloride. Preferred are xanthan gum-based thickeners, such as those commercially available from BASF Personal Care and Nutrition Ltd. XGN.

[0161] Metal salts of fatty acids, such as, for example, magnesium, aluminum and / or zinc stearate or ricinoleate can be used as stabilizers. Salts, such as sodium chloride, can be included as by-products or rheology modifiers.

[0162] In the context of the present invention, biogenic agents are, for example, tocopherol, tocopherol acetate, tocopherol palmitate, ascorbic acid, deoxyribonucleic acid, retinol, bisabolol, allantoin, phytantriol, panthenol, AHA acids, amino acids, ceramides, pseudoceramides, essential oils, plant extracts and vitamin complexes.

[0163] Additionally, film formers may be present. Conventional film formers are, for example, chitosan, microcrystalline chitosan, quaternized chitosan, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymers, polymers of the acrylic acid series, quaternary cellulose derivatives, collagen, hyaluronic acid and its salts and similar compounds.

[0164] Typical water-soluble additives are, for example, preservatives, water-soluble flavors, pH regulators, for example buffer mixtures, water-soluble thickeners, for example water-soluble natural or synthetic polymers, such as, for example, xanthan gum, hydroxyethylcellulose, polyvinylpyrrolidone or high molecular weight polyethylene oxides.

[0165] Suitable antidandruff agents are climbazole, octopirox and zinc pyrithione.

[0166] Furthermore, hydrotropes, such as ethanol, isopropanol or polyols, can be used to improve the flow behavior.

[0167] Suitable preservatives are, for example, phenoxyethanol, formaldehyde solution, parabens, pentylene glycol or sorbic acid, benzoic acid and its salts and other classes of compounds known to the skilled worker. Benzoic acid and its salts are preferred as preservatives.

[0168] Suitable pH-adjusters (= pH regulators) are citric acid and other known acids, which may be buffered. Preferably citric acid is used to adjust it to the same range as the natural pH of human skin.

[0169] Suitable perfume oils are mixtures of natural and synthetic essences. Natural essences include extracts of flowers (lily, lavender, rose, jasmine, orange blossom, ylang-ylang), stems and leaves (geranium, patchouli, petitgrain), fruits (fennel, coriander, cilantro, juniper), peels (bergamot, lemon, orange), roots (nutmeg, angelica, celery, cardamom, ginger, iris, calamus), wood (pine, sandalwood, guaiac wood, fir, yellow sandalwood), herbs and grasses (tarragon, lemongrass, sage, thyme), needles and twigs (spruce, fir, pine, dwarf pine), resins and balsams (galbanum, elemi, benzoin, myrrh, frankincense, red myrrh). Typical synthetic perfume compounds are products of ester, ether, aldehyde, ketone, alcohol and hydrocarbon types. Other suitable fragrance oils are essential oils with relatively low volatility which serve primarily as aroma components.

[0170] If desired, so-called "actives", ie ingredients which improve hair and / or body properties, like strengthening the hair, reducing hair breakage or improving hair shine or conditioning, are used. Preferred are protein hydrolysates based on keratin or wheat, rice and / or soy, such as the commercially available Keratin W PP, WLM Benz, WK, WP; LM, Kera-PLM. Small amounts of free amino acids such as lysine or arginine may also be added.

[0171] Useful conditioning agents are, for example, the cationic polymers disclosed as optional component C), alone or in admixture with carrier oils and / or fatty alcohols. Additionally, most of the above-mentioned "actives" also have conditioning properties.

[0172] If desired, pearlescent agents known in the art may be added, for example aqueous dispersions based on the wax ethylene glycol distearate.

[0173] According to the invention, water is one of the further components D).

[0174] Preference is given to using these further components D) in amounts making up to 100 wt. %, based on the personal care composition.

[0175] Particularly preferred personal care compositions for treating the hair and / or body comprise

[0176] A) 0.1 wt% to 5 wt%, in particular 0.25 wt% to 3 wt% of an aqueous dispersion as claimed in claim 1 or 19, calculated as an aqueous wax dispersion and based on the personal care composition, and

[0177] B) 1.0 to 30 wt %, in particular 5.0 to 25 wt %, calculated as active matter and based on the personal care composition, of one or more detersive surfactants selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric or zwitterionic surfactants, and

[0178] C) 0 to 5 wt %, in particular 0.01 to 1 wt %, calculated as active substance and based on the personal care composition, of a cationic polymer, and

[0179] D) Other components or additives, including salt and water, making up to 100 wt%.

[0180] Very particular preference is given to personal care compositions for treating the hair and / or body, which personal care compositions comprise

[0181] 0.1 wt % to 5 wt %, in particular 0.25 wt % to 3 wt % of the aqueous dispersion according to claim 1 or 19, calculated as aqueous wax dispersion and based on the personal care composition, and

[0182] 1.0 to 30 wt. %, in particular 5.0 to 25 wt. %, calculated as active substance and based on the personal care composition, of one or more detersive surfactants selected from the group consisting of alkyl sulfates, N-acylamino acid salts, alkyl- and / or alkenyl polyglucoside carboxylates, protein fatty acid condensates, monoesters of fatty acids with glycerol, alkyl and / or alkenyl polyglycosides, alkyl dimethyl betaines, condensation products of fatty acids-N,N-dimethylaminopropylamide with sodium chloroacetate,

[0183] 0.01 to 1 wt % of a cationic polymer, calculated as active substance and based on the personal care composition, selected from the group consisting of cationically modified guar gum derivatives

[0184] Other auxiliary agents or additives that make up to 100 wt % include salt and water.

[0185] Most preferred are personal care compositions for treating the hair and / or body comprising

[0186] A) 0.1 wt% to 5 wt%, in particular 0.25 wt% to 3 wt% of an aqueous dispersion as claimed in claim 1 or 19, calculated as an aqueous wax dispersion and based on the personal care composition, and

[0187] B) 1.0 to 30 wt. %, in particular 5.0 to 25 wt. %, calculated as active substance and based on the personal care composition, of one or more detersive surfactants selected from the group consisting of N-acylamino acid salts, monoesters of fatty acids with glycerol, alkyl and / or alkenyl polyglycosides, alkyl dimethyl betaines, condensation products of fatty acid-N,N-dimethylaminopropylamide with sodium chloroacetate,

[0188] C) 0.01 to 1 wt % of a cationic polymer, calculated as active substance and based on the personal care composition, selected from the group consisting of cationically modified guar gum derivatives

[0189] D) Other adjuvants or additives, including salt and water, which make up to 100 wt%.

[0190] However, according to the present invention, it is preferred that none of the compounds of the personal care composition comprises ethylene oxide and / or propylene oxide units.

[0191] Furthermore, it is highly preferred according to the present invention that none of the surfactants of the personal care composition comprises sulfate groups.

[0192] Examples

[0193] Example 1: Wax dispersion with hydrogenated rapeseed oil and its properties

[0194] The wax dispersion was prepared by mixing all the compounds listed in Table 1a below. First 2 / 3 of the water mentioned was heated to 90° C., compounds a) to c) were added in the stated amounts (% by weight and calculated as active substance) and stirred. After cooling to about 60° C., the remaining 1 / 3 of the water was added with stirring. After subsequent cooling to about 40° C., sodium benzoate and citric acid (50 wt % solution; as is; not calculated as active substance) were added and allowed to cool to room temperature.

[0195] The following compounds were used (% = wt % and calculated as active substance = AS):

[0196] HF 62: Hydrogenated rapeseed oil; wax; melting point 60° C.-63° C.; triglycerides of hydrogenated fatty acids with the following fatty acid specifications (wt %):

[0197]

[0198] 90 / 18: Glyceryl monooleate (nonionic emulsifier)

[0199] O: Cetearyl alcohol (50 wt% cetyl alcohol and 50 wt% stearyl alcohol; nonionic emulsifier)

[0200] PK 45: an aqueous composition having 37% by weight of cocamidopropyl betaine; 7% by weight of soda chloride and made up to 100% by weight of water.

[0201]

[0202]

[0203]

[0204]

[0205] Table 1a shows that all of the wax dispersions according to the invention have a pearlizing effect, very good storage stability without demixing and a stable viscosity even after a temperature swing. The wax dispersion 1a according to the invention has an excellent pearlizing effect and a very small wax particle size, which is surprising since such a pearlizing effect is generally known for wax dispersions with a particle size of about 10 μm (d 50). The wax dispersion 1d according to the invention differs in its compound amounts but shows the same excellent pearlizing effect as the wax dispersion 1a. The wax dispersion 1b according to the invention with a higher amount of betaine shows an excellent pearlizing effect compared to the wax dispersion 1a; although the wax dispersion 1b) shows a higher viscosity, the viscosity itself is stable, i.e. does not increase after the viscosity swing test. The wax dispersion 1c) according to the invention comprises cetearyl alcohol instead of glyceryl monooleate and the wax dispersion 1f) according to the invention comprises sodium cocoamphoacetate as component c) instead of cocamidopropyl betaine.

[0206] Comparative Example V1 shows that in the absence of the nonionic emulsifier glyceryl monooleate (component b), no stable wax dispersion is obtained. Comparative Example V2 shows that based on sunflower seed wax (component a), no stable wax dispersion is obtained. In Comparative Example V3, an alkyl polyglucoside is used as nonionic emulsifier (component b), but the wax dispersion separates spontaneously. In Comparative Example V4, the same results can be seen for a wax dispersion based on sunflower seed wax (component a) and a polyglucoside as nonionic emulsifier (component b). Since all wax dispersions from the comparative examples were unstable, no performance tests were carried out in a standardized shampoo composition according to Example 2.

[0207] Examples 2a) to 2f) Standardized Shampoo Compositions

[0208] The pearlescent effect (PG) and white turbidity (white) of the wax dispersions listed in Table 1a were determined in the following standardized shampoo compositions:

[0209] Weight (wt) % - calculated as active substance;

[0210] wt*%: wt% calculated as "dispersion as is" and not as active material:

[0211]

[0212]

[0213] The shampoo formulations were produced by stirring all components at room temperature (20° C.-23° C.). After 24 hours, the wax dispersions were optically evaluated by a person skilled in the art.

[0214] Pearlescent effect (=PG) and white turbidity (=white) have been classified as follows:

[0215] PG:++ = Very good

[0216] PG: + = Good

[0217] PG: - = bad

[0218] White: + = Good

[0219] White: 0 = bad

[0220] The results are listed in Table 1a.

[0221] Example 3: Shampoo Formulation with Conditioning Agent

[0222] The shampoo formulations listed in Table 2a were prepared by the following procedure: All components were stirred at room temperature (23° C.) until they were completely homogeneous. Finally the wax dispersion according to Example 1a was added.

[0223] Weight (wt) % is based on shampoo and calculated as active material weight (wt) % -

[0224] wt* %: "As is" wt % is based on the shampoo, but is not calculated as active; rather it is the product / dispersion as is.

[0225] In examples 3 and / or 4, the following additional ingredients are used (AS = active matter; or active substance; or SM = solid matter or solid substance):

[0226] Guar N: 2-hydroxy-3-(trimethylammonium) propyl chloride; INCI: guar hydroxypropyltrimonium chloride; AS approximately 100%

[0227] 818: Aqueous solution of C8-C18 fatty alcohol polysaccharides; INCI: Coco-glucoside; nonionic surfactant; about 52% active ingredients

[0228] PO 65: mixture of coco-glucoside and glyceryl monooleate; INCI: coco-glucoside (and) glyceryl monooleate; about 65 solid substances

[0229] Balance: Wax dispersion of alkyl polyglucoside and hydrogenated castor oil, INCI: Coco-Glucoside (and) Hydrogenated Castor Oil; about 43% solids

[0230] ACG 50: Liquid with sodium cocoyl glutamate and disodium cocoyl glutamate; INCI: sodium cocoyl glutamate; about 40% solids

[0231] LGC Sorb: Liquid containing anionic C10-C16 alkyl polyglucoside carboxylates; INCI: Sodium Lauryl Glucose Carboxylate (and) Lauryl Glucoside; Approx. 31% actives

[0232] SF-N: a mixture of sodium cocoamphoacetate, glycerin, lauryl glucoside, sodium cocoyl glutamate and sodium glucose carboxylate; INCI: sodium cocoamphoacetate (and) glycerin (and) lauryl glucoside (and) sodium cocoyl glutamate (and) sodium lauryl glucose carboxylate; about 40% active ingredients

[0233] Micro: Liquid with dicaprylyl ether, decyl glucoside and glyceryl monooleate; INCI: dicaprylyl ether (and) decyl glucoside (and) glyceryl monooleate; approximately 50% actives

[0234] XGN: Xanthan gum; INCI: Xanthan gum

[0235] 1216G: White granules with sodium C12-C18 alcohol sulfate; INCI: Sodium Cocoyl Sulfate

[0236] ALS Benz: Liquid containing sulfuric acid, mono C10-C16 alkyl esters, ammonium salt, INCI: ammonium lauryl sulfate; active substance: about 28 wt%

[0237] AB: Liquid with C12-C14 Alkyl Dimethyl Betaine; INCI: Coconut Betaine; about 31 wt% actives

[0238]

[0239]

[0240]

[0241]

[0242] All shampoo formulations in Table 2a containing the claimed wax dispersions showed a pearlizing effect which was stable for a long time (1 to 4 weeks) at room temperature and at elevated temperatures without any separation (=determined as "1").

[0243] Additionally, the shampoo formulation has excellent conditioning properties and significantly reduces hair breakage.

[0244] The conditioning properties can be shown in low figures in (%) measured as the residual wet combability (=wet combing properties) and / or the residual dry combability (=dry combing properties), which are determined as follows:

[0245] Preparation of hair strands for testing

[0246] Ten locks of hair per sample (medium-dark brown Caucasian hair (12 cm / 1 g, International Hair Importers & Products, USA) were cleaned by incubation in 6% sodium lauryl ether sulfate (ac) (pH 6.5) for 30 minutes, followed by rinsing and immersion in water three times for two minutes each time. The hair was then bleached with 5% hydrogen peroxide (pH 9.4) for 20 minutes and then rinsed thoroughly. Finally, the locks were hung to dry in a stream of warm air (approximately 55° C.) for 30 minutes. The described preparation was performed by an automated system.

[0247] The hair tresses were treated with the formulations 1) to 7) listed in Table 2a.

[0248] In the automated method, measurements are made before and after treatment of the hair with the shampoo formulations 1) to 7) according to the invention and compared with C1) and C2). For this purpose, the hair is treated with 0.125 g / g hair for 5 min.

[0249] In an automated system of a wet combing apparatus, the treated hair tresses were rinsed for 1 minute under standard conditions (38° C., 1 liter / minute) and measured.

[0250] To determine the dry combability, the treated hair tresses were stored at 30° C. and 40% relative humidity for 16 hours.

[0251] Repeated combing of hair strands

[0252] The locks were combed 50,000 times (45 rpm) at 30°C and 40% relative humidity using a special combing device.

[0253] For each determination, 10 hair tresses were tested and the combing force was measured over 23 combing movements (3rd to 23rd).

[0254] The % residual combability is calculated as follows:

[0255] Residual combability (%)=(residual combing work after product treatment: combing work before product treatment)×100.

[0256] Assessment of Hair Breakage

[0257] After 50,000 combing cycles, the broken hair fibers were collected in a drawer. Fibers longer than the diameter of a petri dish (about 9 cm) were then sorted out and the remaining fibers were weighed. Hair breakage was quantified as the ratio of the weight of broken fibers to the weight of the entire hair strand.

[0258] Significance test

[0259] The statistical significance of the differences between the formulations and compared to untreated hair was calculated using the Tukey test (p <= 0.05). The Tukey test is a one-step multiple comparison procedure and statistical test that is used in conjunction with ANOVA (analysis of variance) to find which means are significantly different from each other. If the ANOVA test indicates a significant difference, the Tukey test is performed. It compares all possible pairs of means and is based on a studentized range distribution (this distribution is similar to the distribution of t from a t-test). The test compares the mean of each treatment to the mean of every other treatment. It is applied to the set of all pairwise comparisons simultaneously and determines where the difference between the two means is greater than the expected allowed standard error. The threshold for the test is the HSD range (truly significant difference).

[0260] The HSD range is determined by the signal-to-noise ratio and the number of measurements. The difference between two samples must be greater than the calculated HSD value to be significantly different with a probability of 95%.

[0261] From Table 2a) it is clear that all shampoo formulations containing wax dispersions according to Table 1a Example 1a) show better residual wet and dry combability than formulations without wax dispersions. This is also true in the presence of cationic polymers, which are "typical" compounds for obtaining conditioning properties. For example, Shampoo 1 with wax dispersions is significantly better than comparative shampoo C1 or Shampoo 4 is much better than comparative shampoo C2 in terms of dry and wet combability and hair breakage. As a result, Table 2a shows that wax dispersions themselves have additional conditioning properties and / or enhance the conditioning properties of cationically modified polymers in shampoo formulations.

[0262] Example 4: Body wash formulation without conditioning agent

[0263] The body wash formulation was prepared as the hair care formulation in Example 3. The wax dispersion according to Example 1a was added last. The composition and its properties are shown in Table 2b, where the weight (wt) % is based on the shampoo and calculated as active weight (wt) % -

[0264] wt*%: The "as is" wt% is based on the shampoo, but is not calculated as active; rather it is the product / dispersion as is.

[0265]

[0266]

[0267] All shower gel formulations showed a pearlizing effect which was stable for a long time (1 to 4 weeks) at room temperature and at higher temperatures (1 to 4 weeks at 40° C.) without any separation (= determined as “1”).

[0268] Additionally, the body wash formulation has excellent sensory properties and gives the skin a feeling of rich care.

Claims

1. Aqueous dispersions of natural waxes, which can be used as pearlescent agents in personal care formulations, (a) natural waxes selected from the group consisting of 50 to 100 wt. % hydrogenated rapeseed oil, (b) nonionic emulsifiers selected from the group consisting of linear fatty alcohols and monoglycerides (c) amphoteric and / or zwitterionic surfactants (d) optionally an additional nonionic surfactant different from (b), (e) optional adjuvants or additives, including salts, and (f) Water.

2. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain (a) a natural wax selected from the group consisting of hydrogenated rapeseed oil.

3. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain (a) a natural wax selected from the group consisting of hydrogenated rapeseed oil containing at least 90 wt. % of triglycerides of a fatty acid mixture, based on hydrogenated rapeseed oil, the fatty acid mixture consisting of 0-10 wt. % C16 fatty acids, 35-45 wt. % C18 fatty acids, 5-15 wt. % C20 fatty acids and 40-50 wt. % C22 fatty acids.

4. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain natural wax (a) in an amount ranging from 15 to 40% by weight, based on the wax dispersion.

5. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain nonionic emulsifiers b) selected from the group consisting of monoglycerides of linear saturated and / or unsaturated fatty acids, in particular glyceryl monostearate and / or glyceryl monooleate.

6. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain nonionic emulsifiers b) in amounts ranging from 0.5 to 5.0% by weight, based on the wax dispersion.

7. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain amphoteric and / or zwitterionic surfactants (c) selected from the group consisting of betaines and / or amphoteric acetates.

8. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain amphoteric and / or zwitterionic surfactants (c) in an amount ranging from 10 to 25% by weight, based on the wax dispersion.

9. The aqueous dispersion according to claim 1, wherein These aqueous dispersions contain an additional nonionic surfactant (d) different from (b) selected from the group consisting of alkyl and / or alkenyl polyglucosides and alkyl and / or alkenyl glucamides.

10. The aqueous dispersion according to claim 1, wherein These aqueous dispersions contain an additional nonionic surfactant (d), different from (b), in an amount ranging from 0 to 5% by weight, based on the wax dispersion.

11. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain further auxiliaries or additives (e), including salts, in amounts ranging from 0.1 to 15% by weight, based on the wax dispersion.

12. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain water (f) in an amount making up to 100% by weight, based on the wax dispersion.

13. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain a) a natural wax selected from the group consisting of hydrogenated rapeseed oil comprising at least 90 wt. % of triglycerides of a fatty acid mixture based on hydrogenated rapeseed oil, the fatty acid mixture comprising 0-10 wt. % C16 fatty acids, 35-45 wt. % C18 fatty acids, 5-15 wt. % C20 fatty acids and 40-50 wt. % C22 fatty acids b) nonionic emulsifiers selected from the group consisting of monoglycerides of fatty acids, in particular glyceryl monostearate and / or glyceryl monooleate c) amphoteric and / or zwitterionic surfactants selected from the group consisting of The group consisting of betaine and / or amphoacetate, and d) optionally a nonionic surfactant different from (b), selected from the group consisting of alkyl / alkenyl polyglucosides and alkyl / alkenyl glucamides (e) other adjuvants or additives, including salts, and (f) Water.

14. The aqueous dispersion according to claim 1, characterized in that These aqueous dispersions contain wax-based dispersions a) 15-40 wt% of a natural wax selected from the group consisting of hydrogenated rapeseed oil comprising at least 90 wt% of triglycerides of a fatty acid mixture based on hydrogenated rapeseed oil, the fatty acid mixture comprising 0-10 wt% C16 fatty acids, 35-45 wt% C18 fatty acids, 5-15 wt% C20 fatty acids and 40-50 wt% C22 fatty acids b) 0.5 to 5.0 wt% of nonionic emulsifiers selected from the group consisting of monoglycerides of fatty acids, especially glyceryl monostearate and / or glyceryl monooleate c) 10.0 to 25.0 wt% of amphoteric and / or zwitterionic surfactants selected from the group consisting of betaines and / or amphoteric acetates, especially cocamidopropyl betaine d) 0.0 to 5.0 wt% of a nonionic surfactant different from (b), selected from the group consisting of alkyl / alkenyl polyglucosides and alkyl / alkenyl glucamides; e) 0.1 to 15 wt % of other auxiliaries or additives, including salts, in particular preservatives and / or pH regulators and / or salts, and (f) Make up to 100 wt% of water.

15. The aqueous wax dispersion according to claim 1, characterized in that These aqueous wax dispersions are substantially free of components containing one or more ethylene oxide and / or propylene oxide units.

16. The aqueous dispersion according to claim 1, wherein These aqueous dispersions consist of: a wax-based dispersion, a) 15-40 wt% of a natural wax selected from the group consisting of hydrogenated rapeseed oil comprising at least 90 wt% of triglycerides of a fatty acid mixture based on hydrogenated rapeseed oil, the fatty acid mixture comprising 0-10 wt% C16 fatty acids, 35-45 wt% C18 fatty acids, 5-15 wt% C20 fatty acids and 40-50 wt% C22 fatty acids b) 0.5 to 5.0 wt% of nonionic emulsifiers selected from the group consisting of monoglycerides of fatty acids, especially glyceryl monostearate and / or glyceryl monooleate c) 10.0 to 25.0 wt% of amphoteric and / or zwitterionic surfactants selected from the group consisting of betaines and / or amphoteric acetates, especially cocamidopropyl betaine (e) 0.1 to 15 wt % of other auxiliaries or additives, including salts, in particular preservatives and / or pH regulators and / or salts, and (f) Make up to 100 wt% of water.

17. The aqueous wax dispersion according to claim 1, characterized in that This natural wax hydrogenated rapeseed oil has passed the Mastersizer An average particle size d50 of 0.1 to 1.0 μm, especially 0.1 to 0.2 μm, measured via laser diffraction.

18. A method for producing an aqueous wax dispersion as claimed in claim 1, characterized in that After adding these components (a), (b) and (c) and / or optionally (d) to a portion of the total water (f), the mixture is heated to about 85°C to 95°C with stirring, cooled to about 40°C to 60°C, and then component (e) and the remaining part of the water (f) are added.

19. Use of the aqueous wax dispersions according to claim 1 or 18 as pearlescent agents in personal care compositions for hair and / or body treatment, the amount of these aqueous wax dispersions being especially 0.1% to 5% by weight, calculated as aqueous wax dispersion and based on the personal care composition.

20. Use of the aqueous wax dispersions according to claim 1 or 18 as conditioning agents in personal care compositions for hair treatment, in particular for improving dry and / or wet combability, and / or hair breakage, the amount of these aqueous wax dispersions preferably being 0.1% to 5% by weight calculated as aqueous wax dispersion and based on the personal care composition.

21. Use of the aqueous wax dispersions according to claim 1 or 18 as conditioning agents in personal care compositions for body treatment, in particular for improving the sensory feel of the body, the amount of these aqueous wax dispersions preferably being 0.1% to 5% by weight calculated as aqueous wax dispersion and based on the personal care composition.

22. Use of an aqueous wax dispersion as claimed in claim 19 or 20 or 21 in a personal care composition for hair and / or body treatment, these aqueous wax dispersions being substantially free of components containing one or more ethylene oxide and / or propylene oxide units.

23. Use of aqueous wax dispersions according to claims 19 or 20 or 21 in personal care compositions for hair and / or body treatment, these aqueous wax dispersions being substantially free of surfactants containing sulfate groups.

24. A personal care composition for hair and / or body treatment comprising A) 0.1 wt% to 5 wt%, in particular 0.25 wt% to 3 wt% of the aqueous wax dispersion according to claim 1 or 18, calculated as aqueous wax dispersion and based on the personal care composition, and B) one or more detersive surfactants selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric or zwitterionic surfactants, and C) optional cationic polymers and D) Optional other adjuvants or additives, including salt and water.

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