MXPA00003833A - Cleansing compositions - Google Patents

Abstract

A rinse-off liquid personal cleansing composition comprising:(a) water, (b) from about 1%to about 60%by weight of a water-soluble surfactant, (c) a water-insoluble oil selected from highly branched polyalphaolefins having formula (1) wherein R1 is H or C1-C20 alkyl, R4 is C1-C20 alkyl, R2 is H or C1-C20, and R3 is C1-C20 preferably from C5-C20, n is an integer from 0 to 3 and m is an integer of from 1 to 1.000 and having a number average molecular weight of from about 1.000 to about 25,000, and (d) a crystalline, hydroxy-containing stabilizer selected from (i) wherein R1 is -(C=O)-R4(COH)xR5(COH)yR6, R2 is R1 or H, R3 is R1 or H, R4 is C0-20 alkyl, R5 is C0-C20 alkyl, R6 is C0-C20 alkyl, R4+R5+R6=C10-22, and wherein 12x+y24, (ii) R7-(C=O)-OM, wherein R7 is -R4(COH)xR5(COH)yR6, M is Na+, K+, or Mg2+, or H, and (iii) mixtures thereof. The personal cleansing compositions of the invention provide excellent product stability and rheology characteristics as well as excellent rinse feel and skin mildness.

Description

CLEANING COMPOSITIONS TECHNICAL FIELD The present invention relates to cleaning compositions. In particular, this invention relates to mild personal cleansing compositions that exhibit improved product stability and in combination with good rinsing sensation, good skin feel attributes, and foaming properties that are suitable for simultaneous cleaning and conditioning of the skin. skin and / or hair and which can be used, for example, in the form of foam bath preparations, shower products, skin cleansers, hand cleaners, face and body, shampoo, etc.

BACKGROUND OF THE INVENTION The mild cosmetic compositions must satisfy a number of criteria including cleansing power, foaming properties and mild / low irritability / good feeling with respect to the skin, hair and ocular mucosa. The skin is made up of several layers of cells that line and protect the underlying tissue. Keratin and collagen are fibrous proteins that form the skeleton of its structure. The outermost layer of said layers is referred to as the stratum corneum. The hair similarly has an outer protective coating that covers the fiber of the hair that is called cuticle. The anionic surfactants can penetrate the stratum corneum membrane and the cuticle and, through delipidization, destroy the integrity of the membrane and lose the functions of barrier and water retention. Such interference with the protective membranes of the hair can lead to a rough sensation of the skin and irritation of the eyes and can, in the long run, allow the surfactant to activate the immune response by creating irritation. The ideal cosmetic cleaners should clean the skin or hair slowly, without degreasing and / or drying the hair and skin and without irritating the ocular mucosa or stretching the skin after frequent use. Most of the foaming soaps, shower and bath products, shampoos and bars do not meet this aspect. Certain synthetic surfactants are known to be mild. However, a major drawback of some mild synthetic surfactant systems when formulated for shampooing or personal cleansing is that they have what could be described as a "slippery" or "slippery" rinsing sensation that consumers do not like. . The use of certain surfactants such as potassium laurate, on the other hand, can produce a "harsh" rinse sensation but at the expense of the clinical smoothness of the skin. These two facts make the selection of suitable surfactants in the rinse sensation and the softness benefit formulations process delicate balance. In this way, it is necessary that the personal cleansing compositions provide a "rough" rinsing sensation while at the same time having excellent skin softness, in addition to the excellent characteristics of the product such as foam, and skin feeling attributes. In use. Personal cleansing compositions that have a "rough" rinsing feel while having excellent softness characteristics are provided by the combination of certain water insoluble oils, such as certain polyalphaolefin oils, in combination with a surfactant system soft, soluble in water. Although improvements in the feeling of wiping are provided, systems containing such oils are not always successful from the point of view of product stability, rheology and disposability of the product. Although not intended to be limited by theory, it is believed that the above is due to the low density characteristics of said oils. Therefore, it would be desirable to improve the stability and rheology characteristics of such systems. The conventional personal cleansing compositions use materials such as Bentone gels and ethylene glycol distearate. Hydroxyl crystalline materials containing stabilizer such as trihydroxystearin are known for their use in liquid skin cleansers.

WO 96/25144 describes the tension of stable foaming skin cleansing compositions comprising a crystalline agent, hydroxy-containing stabilizer, skin-moisturizing lipid, surfactant and water. GB-A-2297975 discloses personal cleansing compositions comprising surfactant, water-insoluble salt of a C 14 -C 22 fatty acid, optionally a cationic or non-ionic polymeric skin conditioning agent, trihydroxystearin and water. It has surprisingly been found that by incorporating crystalline, hydroxy-containing materials such as trihydroxystearin into personal cleansing compositions containing mild surfactant, water-soluble systems and certain low density polyolefin oils, significant improvements are provided in the characteristics of stability, rheology and thickening of the product, at the same time as providing an excellent rinsing sensation.

BRIEF DESCRIPTION OF THE INVENTION According to the present invention there is provided a rinsable liquid personal cleansing composition comprising: (a) water, (b) from about 1% to about 60% by weight of a water-soluble surfactant (c) an oil Nsoluble in water selected from highly branched polyalphaolefins having the following formula wherein R 1 is H or C 1 -C 20 alkyl, R 4 is C 1 -C 20 alkyl, R 2 is H or C 1 -C 20, and R 3 is C 1 -C 20 preferably C 5 -C 20, n is an integer from 0 to 3 and m is an integer from 1 to 1000 and has a number-average molecular weight of about 1000 to about 25,000, and (d) a hydroxy-containing crystalline stabilizer selected from (i) wherein R1 is - (C = O) -R4 (COH) xR5 (COH) and R6 R2 is R1 or H R3 is R1 or H R4 is alkyl of CO-20 R5 is C0-C20 alkyl R6 is C0- alkyl C20 R4 + R5 + R6 = C 10-22 and wherein 1 < x + y < 4 (ii) R7- (C = O) -OM wherein R7 is -R4 (COH) xR5 (COH) and R6, M is Na +, K \ or Mg2 +, or H, and (iii) mixtures thereof. The compositions of the present invention provide an improvement in stability and rheology characteristics while at the same time providing an excellent rinsing sensation for the skin. All concentrations and ratios herein are by weight of the cleaning composition, unless otherwise specified. The chain lengths of the surfactant are also based on the average chain length by weight, unless otherwise specified.

DETAILED DESCRIPTION OF THE INVENTION The liquid cleaning compositions herein comprise water, surfactant, hydroxy-containing crystalline stabilizer, and certain water insoluble oils, which will be described below. As used herein, the term "rinsing sensation" refers to the feeling of the skin during the skin rinsing foaming procedure after cleaning it with a cleaning composition. The type of rinsing sensation that is provided by the compositions of the present invention can be described in terms such as "rough" rinsing sensation, a "soap-like" rinsing sensation and a "non-slip" or "rinsing" rinsing sensation. not viscous. " Such a "rough", "non-slippery" or "non-viscous" soap-like rinse sensation can be detected by an increase in friction between the hand and the skin during the skin rinsing foaming procedure. As used herein, the term "water-insoluble" in relation to oils is a material that is substantially insoluble in distilled water at room temperature without the addition of other adjuncts and / or ingredients as described herein. The water insoluble oil for use herein is selected from (a) highly branched polyalphaolefins having the following formula: wherein R1 is H or C1-C20 alkyl, R4 is C1-C20 alkyl, R2 is H or Cr C20, and R3 is C5-C20, n is an ester from 0 to 3 and m is an integer from 1 to 1000 and has a number average molecular weight of from about 1000 to about 25,000, preferably from about 2500 to about 6000, more preferably from about 2500 to about 4000, preferably the polyalphaolefins of type (a) which are used herein have a viscosity of about 300 cst about 50,000 cst, preferably about 1000 cst at about of 4000 cst, at 40 ° C using the ASTM method D-445 to measure the viscosity. Oils of type (a) may also have a degree of unsaturation, but are preferably saturated. Suitable polyalphaolefins of type (a) such as those described above can be derived from 1-alkene monomers having from about 4 to about 20 carbon atoms, preferably from about 6 to about 12 carbon atoms , especially from about 8 to about 12 carbon atoms. Polyalphaolefins useful herein are preferably hydrogenated polyalphaolefin polymers. Non-limiting examples of 1-alkene monomers for use in the preparation of the polyalphaolefin polymers herein include 1-hexene, 1-ketene, 1-decene, 1-dodecene, 1-tetradecene, branched chain isomers such as 4-methyl-pentene, and combinations thereof.

Also suitable for preparing the polyolefin liquids are 1 -hexene to 1-hexadecenes and combinations thereof, more preferably 1-octene to 1 -dodecene or combinations thereof. Examples of such oils include polydecene oils, such as those commercially available from Mobil Chemical Company, P.O.

Box 3140, Edison, New Jersey 08818, USA, under the tradename Puresyn 40 and Puresyn 100. Particularly preferred, from the viewpoint of improving the rinsing feel of the composition, a highly branched polyalphaolefin material of type ( a) which has a number average molecular weight of about 2500 to about 4000 and a viscosity of about 100 cst to about 2000 cst (ASTM D-455 a 45 ° C) such as that commercially available from Mobil under the tradename Puresyn 100. The mixtures of the above oils are also suitable for use herein. In the preferred embodiments the number average particle diameter for the water-insoluble oil used herein is in the range of about 1 micron to about 500 microns, preferably about 5 to about 200 microns, more preferably about 5 to 50 microns, especially about 5 to about 20 microns. The compositions herein preferably comprise from about 0.1% to about 20%, more preferably from about 0.5% to about 10%, especially from about 1% to about % by weight of oil insoluble in water.

Surfactant System As a further essential feature, the compositions of the present invention comprise a surfactant system of water-soluble surfactants. Soluble in water, as defined herein, refers to a surfactant having a molecular weight of less than about 20,000, wherein the surfactant is capable of forming a clear isotropic solution when dissolved in 0.2% w / w water. p under environmental conditions. Suitable surfactants for inclusion in compositions according to the present invention generally have a lipophilic chain length of from about 6 to about 22 carbon atoms and can be selected from anionic, nonionic, zwitterionic, and amphoteric surfactants and mixtures thereof. The total level of surfactant is preferably from about 2% to about 40%, more preferably from about 3% to about 20% by weight, and especially from about 5% to about 15% by weight. The compositions preferably comprise a mixture of anionic surfactants with zwitterionic and / or amphoteric surfactants. The weight ratio of the anionic surfactant: zwitterionic and / or amphoteric surfactant is on the scale of about 1: 10 to about 10: 1, preferably about 1: 5 about 5: 1, more preferably around 1: 3 to around 3: 1. Other suitable compositions within the scope of the invention comprise mixtures of anionic, zwitterionic and / or amphoteric surfactants with one or more nonionic surfactants. The compositions of the invention may comprise an anionic water-soluble surfactant at levels of from about 0.1% to about 20%, more preferably from about 0.1% to about 15%, and especially from about 1% to about 10% by weight. Water-soluble anionic surfactants suitable for inclusion in the compositions of the invention include alkylsulfates, ethoxylated alkyl sulfates, alkyl ethoxycarboxylates, alkyl glyceryl ethersulfonates, ethoxylic ether sulfonates, methylacetyltaurates, fatty acylglycinates, N-acylglutamates, acyl isocyanates, alkyl sulfosuccinates, alkylethylsulfosuccinates, alpha fatty acids -sulfonated, its salts and / or its estersethoxylated alkyl phosphate esters, acyl sarcosinates and fatty acid / protein condensates, soaps such as ammonium, magnesium, potassium, triethanolamine and sodium salts of lauric acid, myristic acid and palmitic acid, acylapartatos, alkoxyamide carboxylates, alkanolamide sulfosuccinates (ethoxylates) ), ethoxylated alkyl citrate sulfosuccinates, acylethylenediaminetriacetates, acylhydroxyethyl isocyanates, acylamide alkoxysulfates, linear alkylbenzene sulphonates, paraffin sulphonates, alpha-olefin sulphonates, alkylalkoxy sulfates, and mixtures thereof. The alkyl and / or acyl chain lengths for said surfactants are C6-C22. preferably C12-C18, more preferably C? 2-C. Additional water-soluble anionic surfactants suitable for use in the compositions according to the present invention are the sulfuric acid ester salts of the reaction product of 1 mole of a higher fatty alcohol and from about 1 to about 12 moles of ethylene, with sodium, ammonium and magnesium being the preferred counterions. Particularly preferred are alkyl ethoxy sulfates containing from about 2 to 6, preferably 2 to 4 moles of ethylene oxide, such as sodium laureth-2 sulfate, sodium laureth-3 sulfate, ammonium laureth-3 sulfate and laureth- 3.6 sodium and magnesium sulfate. In preferred embodiments, the anionic surfactant contains at least about 50%, especially at least about 75% by weight of ethoxylated alkyl sulfate. In addition to the wide scale of ethoxylated alkyl sulfates obtained by conventional sodium catalyzed ethoxylation techniques and subsequent sulfation procedures, the ethoxylated alkyl sulphates obtained from the narrow scale of ethoxylates (NREs) are also water-soluble anionic surfactants suitable for their use in the present compositions. The narrow scale ethoxylated alkyl sulphates suitable for use herein are selected from the sulfated alkyl ethoxylates containing an average of from about 1 to about 6, preferably from about 2 to about 4 and especially about 3 moles of ethylene oxide such as NRE, laureth-3 sodium sulfate. The NRE materials suitable for use herein contain distributions of the desired ethylene oxide (EOn) at the scales from 15% to about 30% by weight of EOn, from about 10% to about 20% by weight of EOn +? and from about 10% to about 20% by weight of EOn- ?. The most preferred NRE materials contain less than about 9% by weight of the ethoxylated alkyl sulfate having 7 or more moles of ethylene oxide, less than about 13% by weight of the non-ethoxylated alkyl sulfate. Suitable laureth-3 sulfate NRE materials are available from Hoechst under the trade names GENAPOL ZRO Narrow Range and GENAPOL Narrow Range. The compositions of the present invention may contain, as water-soluble anionic surfactant, the alkyleptocarboxylate surfactant at a level of from about 0.5% to about 15%, preferably from about 1% to about 10%, more preferably from about 1% to about 6% and especially from about 1% to about 4% by weight. The alkylethyloxycarboxylate surfactant is particularly valuable in the compositions according to the present invention for the provision of excellent skin softness attributes in combination with excellent rinse performance and desirable foaming characteristics. Suitable alkylethoxycarboxylates for use herein have the general formula (I): R30 (CH2CH20) kCH2COO-M + wherein R3 is an alkyl or alkenyl group of C ~? A or C? 6, preferably C ~ M-C15, more preferably a C-? 2-C alkyl? or a C12-C-13 alkyl group, k is an average ethoxylation value ranging from 2 to about 7, preferably from about 3 to about 6, more preferably from about 3.5 to about 5.5, especially from about 4 to about 5, more preferably from about 4 to about 4.5, and M is a cation soluble in water, preferably an alkali metal, alkaline earth metal , ammonium, lower alkanolammonium, and mono-, di-, and tri-ethanolammonium, more preferably sodium, potassium, and ammonium, more preferably sodium and ammonium, and mixtures thereof with magnesium and calcium ions. Particularly preferred as water-soluble anionic surfactants suitable for use herein are alkylethoxycarboxylate surfactants having a selected alkyl and / or ethoxylate chain length distribution. Thus, the alkyletoxycarboxylate surfactants suitable for use in the compositions according to the present invention may comprise a distribution of alkylethyloxycarboxylates having different average values of R3 and / or k. The average value k is generally found on the scale of around 3 to about 6 when the R3 is Cu, C-12, C13 or C. Preferred water-soluble anionic alkyleoxycarboxylate surfactants suitable for use herein are the C12 to C (average EO 3-6) ethoxycarboxylates and the C12 to C ?3 ethoxy carboxylates (average EO 3-6). Suitable materials include NEODOX 23-4 (RTM) salts available from Shell Inc. (Houston, Texas, E.U.A.) and EMPICOL (RTM) CBCS (Albringht &.; Wilson). Most preferred for use herein are alkylethoxycarboxylate surfactants wherein, when R3 is a C2-C or C12-C3 alkyl group and the average value of k is on the scale of about 3 to about 6, more preferably from about 3.5 to about 5.5, especially from about 4 to about 5 and more preferably about 4 about 4.5. In the preferred embodiments, the compositions are substantially soap-free, ie they contain less than about 5%, preferably less than about 1%, preferably 0%, by weight soap. The compositions according to the present invention may additionally comprise a water-soluble nonionic surfactant at levels of from about 0.1% to about 20%, more preferably from about 0.1% to about 10%, and especially from about 1% to about 8% by weight. Surfactants of this class include sucrose polyester surfactants, C? 0-C? 8 alkyl polyglycosides and polyhydroxy fatty acid amide surfactants having the general formula (III).

Preferred N-alkyl, N-alkoxy or N-aryloxy, polyhydroxy fatty acid amide surfactants according to formula (III) are those in which Rβ is C5-C31 hydrocarbyl, preferably Cβ-Cig hydrocarbyl , including straight chain and branched chain alkyl and alkenyl, or mixtures thereof and R9 is typically hydrogen, Ci-Cß alkyl or hydroxyalkyl, preferably methyl, or a group of the formula -R1-O-R2 wherein R1 is C2-C8 hydrocarbyl including straight chain, branched chain and cyclic (including aryl), and is preferably C2-C alkylene, R2 is straight chain, branched chain and cyclic C? -C8 hydrocarbyl including aryl and oxyhydrocarbyl, and preferably it is C 1 -C 4 alkyl, especially methyl, or phenyl. Z2 is a polyhydroxyhydrocarbyl moiety having a linear hydrocarbyl chain with at least 2 (in the case of glyceraldehyde) or at least 3 hydroxyl (in the case of other reducing sugars) directly connected to the chain, or an alkoxylated derivative (from ethoxylated or propoxylated preference) thereof. Z2 will preferably be derived from a reducing sugar in a reductive amination reaction, more preferably Z2 is a glycityl moiety. Suitable reducing sugars include glucose, fructose, maltose, lactose, galactose, mannose, and xylose, as well as glyceraldehyde, as starting materials, high dextrose corn syrup, high fructose corn syrup, and high yield syrup. High maltose corn can be used just like the individual sugars listed above. Such corn syrups can produce a mixture of sugar components for Z2. It should be understood that by no means is it intended to exclude other suitable starting materials. Z2 preferably will be selected from the group consisting of CH2- (CHOH) n-CH2OH, CH (CH2OH) - (CHOH) n-1-CH2OH, CH2 (CHOH) 2 (CHOR ') CHOH) CH2OH, where n is an integer from 1 to 5, inclusive, and R 'is H or a cyclic mono- or poly-saccharide, and alkoxylated derivatives thereof. As noted, the most preferred are glycityls wherein n is 4, particularly CH2- (CHOH) 4-CH2OH. The most preferred polyhydroxy fatty acid amide has the formula R8 (CO) N (CH3) CH2 (CHOH) 4CH2OH wherein R8 is a straight chain alkyl or alkenyl group of C6-C? 9. In the compounds of the above formula, R8-CO-N < they can be, for example, cocamide, stearamide, oleamide, lauramide, myristamide, capricamide, caprylamide, palmitamide, ceboamide, etc. Exemplary nonionic surfactants suitable for use in the compositions according to the present invention include primary amines such as cocaine (available as Adagen 160D (TM) from Witco) and alkanolamides such as cocamide MEA (available as Empilan CME (TM)) from Albright and Wilson), cocamide PEG-3, cocamide DEA (available as Empilan CDE (TM) from Albright and Wilson), MEA from lauramide (available as Empilan LME (TM) from Albright and Wilson), MIPA from lauramide, DEA of lauramide and mixtures thereof. Suitable amphoteric surfactants for use herein include: (a) ammonium derivatives of the formula [V]: wherein R-i is C5-C22 alkyl or alkenyl, R2 is CH2CH2OH or CH2CO2M, M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium and R3 is CH2CH2OH or H; (b) aminoalkanoates of the formula [VI] R 1 NH (CH 2) nCO 2 M iminodyalkanoates of the formula [VII] R [N 2] [CH 2) mCO 2 M] 2 and iminopolyalkanoates of the formula (VIII) [CH2C02M] 2 where n, m, p and q are numbers from 1 to 4, and Ri and M are independently selected from the groups specified above; and (c) mixtures thereof. Suitable amphoteric surfactants of type (a) include compounds of the formula (V) wherein R-i is C8H? 7 (especially isocapryl), C9H19 alkyl and CnH23. Suitable amphoteric surfactants of type (a) are marketed under the trade name Miranol and Empigen. In the CTFA nomenclature, materials suitable for use in the present invention include cocamidocarboxypropionate, cocamidocarboxypropionic acid, cocamidoacetate, cocamido acetate (otherwise referred to as cocamidocarboxyglycinate), sodium lauroamphoacetate (otherwise referred to as sodium lauroamphoboxboxiglycinate). Specific commercial products include those sold under the tradenames of Ampholak 7TX (sodium carboxymethylcerebropylamine), Empigen CDL60 and CDR 60 (Albright & amp;; Wilson), Miranol H2M Conc. Miranol C2M Conc. N.P., Miranol C2M Conc. O.P., Miranol C2M SF, Miranol CM Special, Miranol Ultra L32 and C32 (Rhone-Poulenc); Alkateric 2CIB (Alkaril Chemicals); Amphoterge W-2 (Lonza, Inc.); Monateric CDX-38, Monateric CSH-32 (Mona Industries); Rewoteric AM-2C (Rewo Chemical Group); and Schercotic MS-2 (Scher Chemicals). It will be understood that various commercially available amphoteric surfactants of this type are manufactured and sold in the form of electroneutral complexes with, for example, hydroxide counterions or with anionic sulfate or sulfonate surfactants, especially those of the C8-C sulfated alcohol? 8, C8-C18 ethoxylated alcohol or C8-C8 acylglyceride types. However, from the standpoint of softness and stability of the product, the compositions which are essentially free of sulfated (non-ethoxylated) alcohol surfactants are preferred. Note also that the concentrations and weight ratios of the amphoteric surfactants are based herein on the non-complex forms of the surfactants, any counterion of anionic surfactant is considered as part of the content of the general anionic surfactant component. Examples of suitable amphoteric surfactants of type (b) include N-alkyl polytrimethylene-polycarboxymethylamines sold under the tradenames Ampholak X07 and Ampholak 7CX by Berol Nobel and also salts, especially the triethanolammonium salts and salts of N-lauryl-beta-aminoprop acid. .onic and N-lauryl-imino-dipropionic acid. These materials are sold under the trade name Deriphat by Henkel and Mirataine by Rhóne-Poulenc.

The compositions herein may also contain from about 0.1% to about 20%, more preferably from about 0.1% to about 10%, and especially from about 1% to about 8% by weight of a surfactant zwiteriónico. Water-soluble betaine surfactants suitable for inclusion in the compositions of the present invention include alkylbetaines of the formula R5R6R7N + (CH2) nCO2M and amidobetaines of the formula (IX) R5CON (CH2) mN (CH2) nCO2M R7 wherein R5 is C5-C22 alkyl or alkenyl, Re and R7 are independently C1-C3 alkyl, M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium, and n, m are each numbers from 1 to 4. Preferred betaines include cocamidopropyldimethylcarboxymethylbetaine, commercially available from TH Goldschmidt under the trade name of Tegobetaine, and laurylamidopropyl dimethylcarboxymethylbetaine, commercially available from Albright and Wilson under the tradename Empigen BR and from TH Goldschmidt under the trade name Tegobetaína L1OS. Water-soluble sultaine surfactants suitable for inclusion in the compositions of the present invention include alkylamidosultaines of the formula: wherein Ri is C7 to C22 alkyl or alkenyl, R2 and R3 are independently Ci to C3 alkyl, M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium and m and n are numbers from 1 to 4. Cocamidopropylhydroxysultaine is suitable for use herein, which is commercially available under the tradename Mirataine CBS from Rhóne-Pouienc. Water-soluble amine oxide surfactants suitable for inclusion in the compositions of the present invention include alkylamine oxide R5R6R NO and amidoamine oxide of the formula wherein R5 is Cu alkyl or alkenyl at C22, Re and R are independently C1 to C3 alkyl, M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium and m is a number from 1 to 4. Preferred amine oxides include cocamidopropylamine oxide, lauryl oxide and methylamine, and myristyldimethylamine oxide.

Polymeric cationic conditioning agent The compositions according to the present invention may optionally include a polymeric cationic conditioning agent. Polymeric cationic conditioning agents are valuable in compositions according to the present invention for the provision of desirable attributes of skin sensation. The polymeric skin conditioning agent of preference is present at a level of from about 0.01% to about 5%, preferably from about 0.01% to about 3% and especially from about 0.01% to about 2%. % in weigh. Suitable polymers are high molecular weight materials (mass average molecular weight determined, for example, by light scattering, generally from about 2,000 to about ,000,000, preferably from around 5,000 to around 3,000,000, more preferably from 100,000 to around 1,000,000). Representative classes of polymers include cationic guar gums, cationic polysaccharides, cationic homopolymers and copolymers derived from acrylic and / or methacrylic acid; cationic cellulose resins, quaternized hydroxyethylcellulose ethers; cationic copolymers of dimethyldialiammonium chloride and acrylamide and / or acrylic acid; cationic homopolymers of dimethyldiallylammonium chloride; copolymers of dimethylaminoethylmethacrylate and acrylamide, acrylic acid / dimethyldiallylammonium chloride / copolymers of acrylamide, quaternized vinylpyrrolidone acrylate or methacrylate copolymers of aminoalcohol, quaternized copolymers of vinylpyrrolidone and dimethylaminoethylmethacrylamide, copolymers of vinylpyrrolidone / vinylimidazolium metachloride and polyalkylene and ethoxypolyalkyleneimines; quaternized silicones, terpolymers of acrylic acid, methacrylamidopropyltrimethylammonium chloride and methylacrylate, and mixtures thereof. By way of exemplification, suitable cationic polymers include cationic guar gums such as guar gum of hydroxypropyltrimethylammonium (ds from 0.1 1 to 0.22) commercially available under the tradename Jaguar C-14-S (RTM) and Jaguar C- 17 (RTM), as well as Jaguar C-168 (RTM), which contain hydroxypropyl substituents (ds of 0.8-1.1), in addition to the cationic groups specified above, and quaternized hydroxyethylcellulose ethers commercially available under the trade names Ucare Polymer JR-30M, JR-400, LR400, Catanal (RTM) and Celquat. Other suitable cationic polymers are the dimethyldiallylammonium chloride homopolymers commercially available under the tradename Merquat 100, dimethylaminoethyl methacrylate and acrylamide copolymers, dimethyldiallylammonium chloride copolymers and acrylamide, available under the tradenames Merquat 550 and Merquat S, copolymers of acrylic acid / dimethyldiallylammonium chloride / acrylamide available under the tradename Merquat 3330, terpolymers of acrylic acid, methacrylamidopropyltrimethylammonium chloride and methylacrylate commercially available under the trade name Merquat 2001, quaternized vinylpyrrolidone acrylate or amino-alcohol methacrylate copolymers available in the market under the trade name of Gafquat, for example Polyquaternium 1 1, 23 and 28 (quaternized copolymers of vinylpyrrolidone and dimethylaminoethyl methacrylate - Gafquat 755N and quaternized copolymers of vinylpyrrolidone and dimethylaminoethyl methacrylamide ida-HS-100), copolymers of vinylpyrrolidone / vinylimidazolium methochloride, available under the tradenames Luviquat FC370, Polyquaternium 2, and polyalkyleneimines such as polyethyleneimine and ethoxylated polyethyleneimine. It is also convenient to use commercially available cationic polymers under the trade name Aqualon N-Hance. The compositions of the invention may contain about 0.1% to about 20%, preferably about 1% to 15%, and most preferably about 2% to 10% by weight of a nonionic surfactant derived from oil or a mixture of nonionic surfactants derived from oils. These nonionic surfactants derived from oils are useful in compositions according to the invention to provide smoothness to the skin, both during and after treatment. Among the nonionic surfactants derived from oils for use herein are emollients derived from water-soluble plants and animals, such as triglycerides with an inserted polyethylene glycol chain.; monoglycerides and ethoxylated diglycerides, polyethoxylated lanolins and ethoxylated butter derivatives. A preferred class of nonionic surfactants derived from oils for use herein has the general formula (XII) O RCOCH2CH (OH) CH2 (OCH2CH2) nOH wherein n is from about 5 to about 200, preferably 20 to 100, most preferably from 30 to 85, and wherein R includes an aliphatic radical which on average has from 5 to 20 carbon atoms, preferably from 7 to 18 carbon atoms. Among the suitable ethoxylated oils and fats of this class are the polyethylene glycol derivatives of glyceryl cocoate, glyceryl caproate, glyceryl caprylate, glyceryl seboate, glyceryl palmate, glyceryl stearate, glyceryl laurate, glyceryl oleate, ricinoleate glyceryl and glyceryl fatty esters derived from triglycerides, such as palm oil, almond oil, corn oil, preferably glyceryl seboate and glyceryl cocoate. It is possible to obtain nonionic surfactants derived from suitable oils of this kind, in the company Croda Inc. (New York, USA), under its line of Crovol materials, such as Crovol EP40 (glyceride of PEG 20 grass), Crovol EP 70 (PEG60 ass herb glyceride), Crovol A-40 (PEG 20 almond glyceride), Crovol A-70 (PEG 60 almond glyceride), Crovol M-40 (PEG 20 corn glyceride), Crovol M- 70 (PEG 60 corn glyceride), Crovol PK-40 (PEG 12 palm seed glyceride), and Crovol PK-70 (PEG 45 palm seed glyceride), and under the Solan materials range is Solan E, E50 and polyol ethoxylated lanolins and Aqualose L-20 (lanolin alcohol PEG 24) and Aqualose W15 (lanolin alcohol PEG 15) marketed by Westbrook Lanolin. It is also possible to obtain suitable surfactants of this kind in Sherex Chemical Company (Dublin, Ohio, USA) under the line of surfactants Varonic Ll, and in Rewo under the line of surfactants Rewoderm. Among these is, for example, the Varonic Ll 48 (polyethylene glycol (n = 80) glyceryl seboate, also known as glyceryl seboate PEG 80), Varonic Ll 2 (glyceryl seboate PEG 28), Varonic Ll 420 (glyceryl seboate PEG 200) and Varonic Ll 63 and 67 (glyceryl cocoates PEG 30 and PEG 80), Rewoderm LI5-20 (palmitate PEG-200), Rewoderm LIS-80 (palmitate PEG-200 with glyceryl cocoate PEG-7), and Rewoderm LIS-75 (PEG 200 palmitate with PEG 7 glyceryl cocoate) and mixtures thereof. Other emollients derived from oils suitable for use are the PEG derivatives of corn, avocado and babassu oil (Orbignya Speciosa), as well as Softigen 767 (caprylic / capric glycerides PEG (6)). Also suitable for use herein are nonionic surfactants derived from mixed vegetable fats extracted from the fruit of the Butyrospermum Parkii Kotschy tree, and derivatives thereof. This vegetable fat, known as butter of Butyrospermum Parkii is widely used in Central Africa in various applications, such as the manufacture of soaps and as a protective cream, and is marketed by the brand Sederma (78610 Le Perray En Yvelines, France). Particularly suitable are the ethoxylated butter derivatives of Butyrospermum Parkii distributed by Karlshamn Chemical Company (Columbos, Ohio, USA) under the range of Lipex chemicals, such as Lipex 102 E-75 and Lipex 102 E-3 (monoglycerides and ethoxylated diglycerides). of butter from Butyrospermum Parkii) and Croda Inc. (New York, USA) under its line of Crovol materials, such as Crovol SB-70 (monoglycerides and ethoxylated diglycerides of Butyrospermum Parkii lard). It is also possible to use ethoxylated derivatives of mango butter, cocoa butter and borne tallow in compositions according to the invention. Although these products are classified as non-ionic ethoxylated surfactants, it is considered that a certain proportion can remain as non-ethoxylated vegetable fat or oil. Other nonionic surfactants derived from suitable oils are the ethoxylated derivatives of almond oil, peanut oil, rice bran oil, wheat germ oil, linseed oil, jojoba oil, apricot kernel oil, walnuts, palm oil, pistachios, sesame seeds, rapeseed oil, juniper oil , corn oil, peach kernel oil, poppy seed oil, pine oil, castor oil, soybean oil, avocado oil, safflower oil, coconut oil, hazelnut oil, olive oil, oil of grape seed and sunflower seed oil. The nonionic surfactants derived from oils of greater preference for use herein, considering their optimum characteristics to preserve a soft and smooth complexion, are Lipex 102-3 (RTM) (ethoxylated butter derivatives of Butyrospermum Parkii PEG-3 ) and Softigen 767 (RTM) (caprylic / capric glycerides PEG-6).

In accordance with the invention, the compositions may also include lipophilic emulsifiers as active for skin care. Among the lipophilic active agents suitable for skin care are food-grade anionic emulsifiers, which include a diacid mixed with a monoglyceride, such as succinylated monoglycerides, monostearyl citrate, glyceryl monostearate, diacetyl tartrate and mixtures thereof. .

Crystal stabilizer containing hydroxyl Another essential ingredient of the present composition is a crystalline hydroxyl-containing stabilizer. This crystalline hydroxyl-containing stabilizer is present in the compositions of this invention at a ratio between 0.5% and 10%, preferably between 0.75% and 8%, most preferably between 1.25% and 5% by weight. Among the hydroxyl-containing crystalline stabilizers, suitable for use herein, are fatty acids, fatty esters, fatty soaps and hydroxyl-containing water-insoluble wax-like substances. The hydroxyl-containing crystalline stabilizer materials suitable for use herein are selected from: / "CH2-OR1 CH-OR2 CH2-OR3 wherein R1 is - (C = O) -R4 (COH) xR5 (COH) and R6 R2 is R1 or H R3 is R1 or H R4 is C0-C20 alkyl R5 is C0-C20 alkyl R6 is C0-C20 alkyl R4 + R5 + R6 = C10-C22 and wherein 1 < x + y < 4 (i) R7- (C = O) -OM wherein R7 is -R4 (COH) xR5 (COH) and R6, M is NA +, K + or Mg2 +, OR H, and (iii) mixtures thereof. Preferred examples of hydroxyl-containing stabilizers for use herein are 12-hydroxystearic acid, 9,10-dihydroxystearic acid, tri-9,10-dihydro-stearin and tri-12-hydroxystearin. Particularly preferred for use herein from the perspective of improving stability and rheology in combination with polyalphaolefin oil is tri-12-hydroxystearin.

Optional ingredients The compositions herein may also include various optional ingredients. In the following, some examples of the same are described in an enunciative but not limitative manner. In addition to the water-insoluble polyalphaolefin oils described above, it is possible to use other water-insoluble oils in the compositions of the present invention. Among the additional water-insoluble oils for use in personal cleansing compositions of the present invention are types (b) which are branched alk (en) yl materials, with the following formula: wherein R 1 is H or C 1 -C 4 alkyl, R 4 is C 1 -C alkyl, R 2 is H or C 1 -C 4 alkyl, or C 2 -C 4 alkenyl, and R 3 is H or C 1 -C 4 alkyl, or C2-C alkenyl, n is an integer from 0 to 3 and m is an integer from 1 to 1000, and with a number average molecular weight of from about 600 to about 1000, preferably from 750 to 1000, most preferably from 800 to 1000. Preferably, branched alk (en) yl materials of this type have a viscosity on a scale of 500 cst to 50,000 cst, preferably from 1000 cst to 10,000 cst, measured at 40 ° C using the D-445 method of the ASTM to measure the viscosity. Among the suitable alk (en) materials of type (b) for use herein are the butene, isoprene, terpene, styrene or isobutene polymers, preferably butene or isobutene. Among the alk (en) yl oils of type (b) are polybutene oils such as those distributed by Amoco under the trade name of Indopol 40 and Indopol 100, and polyisobutene oils such as those distributed by Presperse Inc. under the name commercial grade Permethyl 104A, and Parapol 950 distributed by Exxon Chemicals Co. Hydrophobically modified silicones having the formula are also suitable for use herein: wherein R is a C 1 -C 4 alkyl or phenyl, R 'is a C 1 -C 20 alkyl or phenyl, z is from 5 to 21, and x is an average number value on a scale of between 20 and 400, and has an average value in number on a scale between 0 and 10 and x + and is located on a scale of between 30 and 400. Preferred materials have values for x of between 40 and 200, preferably 60 and 100, values for and between 0 and 5, preferably 0, and values for the sum of x and y between 60 and 100. The alkylene chain z can be linear or branched. Also, the silicone base structure may contain a low degree of branching to produce a resin (for example MDQ resins, or MDT). Examples of these oils are hydrophobically modified silicones, distributed by GE Silicones under the trade name SF1632 (C16-C18 alkyl methicone), and octylmethone and decylmethone. In the preferred embodiments, the number average particle diameter for the additional water-insoluble oil used herein is on a scale of between 1 miera and about 500 microns, preferably between 5 and 200 microns, most preferably between 5 microns. and 50 microns, most preferably between 5 and 20 microns. The present compositions may also include a nonionic or anionic thickening polymer component, especially water-soluble polymeric materials, with a molecular weight greater than about 20,000. A "water-soluble" polymer means that the material will form a substantially clear solution in water at a concentration of 1% at 25 ° C, and that this material will increase the viscosity of the water. Among the water-soluble polymers that can be used as an additional thickening component in the present compositions are hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, polyethylene glycol, polyacrylamide, polyacrylic acid, polyvinyl alcohol (one example is PVA 217 distributed by Kurary Chemical Co. , Japan), polyvinylpyrrolidone K-120, dextran, for example Dextran crude purified Grade 2P, distributed by D & amp;; O Chemicals, carboxymethylcellulose, exudates from plants such as acacia, ghatti (Anogeissus Latifolia) and tragacanth, seaweed extracts such as sodium alginate, propylene glycol alginate and sodium carrageenan. For the present compositions, the preferred additional thickeners are the natural polysaccharide materials. Among these materials are guar gum, locust bean gum and xanthan gum. Also preferred herein is the use of the hydroxyethyl cellulose with a molecular weight of about 700,000.

Hydrotrope The compositions according to the present invention may contain, as an optional feature, a hydrotrope. Hydrotropes well known in the art are suitable for use herein, including sodium xylene sulfonate, ammonium xylene sulfonate, sodium cumenesulfonate, short chain alkyl sulfate and mixtures thereof. The hydrotrope may be present in the compositions according to the invention in a proportion of from about 0.01% to about 5%, preferably from 0.1% to 4%, most preferably from 0.5% to 3% by weight. The hydrotrope, as defined herein, means a material which, when added to a system of undiluted water-soluble surfactants, can modify its viscosity and its rheological profile. In addition to the water-insoluble oils described above, the compositions of the invention may also include an insoluble perfume or a cosmetic oil or wax, or a mixture thereof, at a level of up to about 10%, preferably up to 3% by weight, characterized in that the oil or wax is insoluble in the sense that they are insoluble in the product matrix at a temperature of 25 ° C. The insoluble cosmetic oils and waxes suitable for use herein may be selected from non-volatile gums and fluids of water-insoluble polyalkylsiloxane and polyalkylsiloxanes, volatile cyclic polydimethylsiloxanes, polyalkoxylated silicones, silicones modified with amino and quaternary ammonium, reinforced silicones and rigid interlacing. , and mixtures thereof, C1-C24 esters of C8-C30 fatty acids, such as isopropyl myristate, myristyl myristate, and cetyl ricinoleate, C8-C30 esters of benzoic acid, beeswax, fatty alcohols saturated and unsaturated such as behenyl alcohol, hydrocarbons such as mineral oils, petrolatum, squalane and squalene, fatty sorbitan esters (see patent No. US-A-3988255, Seiden, issued October 26, 1976), lanolin and derivatives of lanolin similar to oil, triglycerides of animal and plant origin, such as almond oil, peanut oil, wheat germ oil, rice bran oil, linseed oil, jojoba oil, apricot kernel oil, walnuts, palm oil, pistachios, sesame seeds, rapeseed oil, juniper oil, corn oil, peach bone oil, poppy seed oil, pine oil, castor oil, soybean oil, avocado oil, safflower oil, coconut oil, hazelnut oil, olive oil, grape seed oil and sunflower seed oil, and C1-C24 esters of dimeric and trimeric acids, such as diisopropyl dimerate, diisostearyl malate, diisostearyldimerate and triisostearyltrimetrate. The viscosity of the final composition (Brookfield DV II, with Cone CP41 or CP 52, 25 ° C in pure form) is preferably at least 500 cps, most preferably from 1,000 to 50,000 cps, most preferably from 1,000 to 30,000 cps, and most preferably from 1,000 to 15,000 cps cps.

The cleaning compositions may optionally include other skin or hair humectants soluble in the matrix of the cleaning composition. The preferred level of these humectants is from about 0.5% to about 20% by weight. In preferred embodiments, the humectant is selected from essential amino acid compounds that occur naturally in the stratum corneum of the skin, as well as water-soluble non-occlusive non-occlusive compounds and mixtures thereof. Some examples of the most preferred non-occlusive humectants are squalane, sodium pyrrolidonecarboxylic acid, D-panthenol, lactic acid, L-proline, guanidine, pyrrolidone, hydrolyzed protein and other proteins derived from collagen, aloe vera gel, acetamide MEA. and MEA of lactamide, and mixtures thereof. The compositions herein may also include one or more suspending agents in addition to the hydroxyl-containing crystalline stabilizer. Among the suspending agents suitable for use herein are any of several long chain acyl derivative materials or mixtures of these materials. Among these we have ethylene glycol esters of fatty acids with around 16 to 22 carbon atoms. Preferably, the ethylene glycol stearates, both monostearate and distearate, but particularly the distearate containing less than about 7% monostearate. Other useful suspending agents are the fatty acid alkanolamides, which have from about 16 to 22 carbon atoms, preferably from 16 to 18 carbon atoms. Preferred alkanolamides are stearic monoethanolamide, stearic diethanolamide, stearic monoisopropanolamide and stearic monoethanolamide stearate. Other suitable suspending agents are alkyldimethylamine oxides (C-i6-C22) >; such as stearyl dimethyl amine oxide and trihydroxy stearin, which can be obtained under the trade name of Thixcin (RTM) distributed by Rheox. The compositions according to the present invention may also include an opacifying or perlifying agent. It is possible to include these materials on a scale of about 0.01% to about 5%, preferably 0.2% to 1.3% by weight. Among the opacifiers / pearlizers suitable for use in the compositions of the present invention are: titanium dioxide, TiO2; EUPERLAN 810 (RTM); TEGO-PEARL (RTM); long chain acyl derivatives (C16-C22), such as glycol or polyethylene glycol esters of fatty acids with about 16 to 22 carbon atoms and up to 7 ethyleneoxy units; alkanolamides of fatty acids, with about 16 to 22 carbon atoms, preferably 16 to 18 carbon atoms, such as stearic monoethanolamide, stearic stearic diethanolamide monoisopropanolamide and stearic monoethanolamide, and alkyl dimethylamine oxides (C-I6-C22) as the stearyldimethylamine oxide. In preferred compositions the opaque / perlifier is present in the form of crystals. In highly preferred compositions, the opaque / perlifier is a polystyrene dispersion in particles with a particle size of about 0.05 microns to about 0.45 microns, preferably 0.17 microns to 0.3 microns, and these dispersions are preferred since they provide a rheology and an optimal shear thinning behavior. Most preferred is the styrene-acrylate copolymer and OPACFIER 680 (RTM) sold by Morton International. It is possible to add various additional optional materials to the compositions, each at a level of between 0.1% to about 2% by weight. Among these materials are the proteins and polypeptides and derivatives thereof; water-soluble or water-soluble preservatives such as DMDM Hydantoin, Germall 115, methyl, ethyl, propyl and butyl esters of hydroxybenzoic acid, EDTA, Euxyl (RTM) K400, natural preservatives such as benzyl alcohol, sorbent potassium and bisabalol; sodium benzoate and 2-phenoxyethanol; other wetting agents such as hyaluronic acid, chitin, and sodium polyacrylates grafted with starch such as Sanwet (RTM) IM-1000, IM-1500 and IM-2500 marketed by Celanese Superabsorbent Materials, Portsmith, VA, USA and described in Patent No.US-A-4,076,663; solvents; suitable antibacterial agents such as Oxeco (phenoxyisopropanol), trichlorocarbanilide (TCC) and Triclosan, and; low temperature base modifiers such as ammonium ion sources (e.g., NH4CI); viscosity control agents such as magnesium sulfate and other electrolytes; coloring agents; T 2 O 2 and mica coated with TiO 2; perfumes and perfume solubilizers; zeolites such as Valfour BV 400 and derivatives thereof and Ca27Mg2 + sequestrants such as polycarboxylates, aminopolycarboxylates, polyphosphonates, aminopolyphosphonates, EDTA etc., water softening agents such as sodium citrate and insoluble particulate agents such as zinc stearate and silica smoker There is also water present at a level preferably of about 20% to about 99.89%, preferably from 40% to 90%, most preferably at least 75% by weight of the compositions herein. The pH of the compositions is preferably from about 3 to about 10, preferably from 5 to 9, most preferably from 5 to 8 and most preferably from 5 to 7. The compositions of the present invention can be used in various applications for the care of the skin and hair, such as bath gels, body lotions, hair shampoos and the like. The compositions of the present invention can be applied by hand or preferably using a personal cleaning implement, such as a sponge. Among the personal cleansing implements suitable for use with the compositions of the present invention are those described in the following patents, which are incorporated herein by reference: US-A-5, 144,744 issued to Campagnoli on September 8, 1992; US-A-3,343,196 issued to Barnhouse; WO95 / 26671 issued to Procter & Gamble Company; WO95 / 001 16 issued to Procter & Gamble Company and WO95 / 26670 issued to Procter & Gamble Company. The compositions according to the present invention are illustrated by way of example but not limiting, by the following examples. 1. Distributed by Albright & Wilson 2 __. Distributed by Hampshire Chemicals 3. Distributed by Rheox, Inc. 4. Distributed by Mobil Chemical Co. 5. Distributed by Shell Chemical Co.

Manufacturing method It is possible to prepare the compositions by first making a premix of surfactants and suspending agents. This is achieved by combining the surfactants, a portion of the water, powder preservatives and the pH adjuster, stirring gently. Subsequently, this mixture is heated up to 90 ° C, and during this period the fatty alcohols / fatty acids and Thixcin R are added, while stirring the mixture. The mixture is maintained at an elevated temperature for five minutes to one hour before cooling it to a controlled temperature of between 30 and 40 ° C by means of a heat exchanger, which causes the suspending agent to crystallize. To this premix the remaining water is added and then the insoluble oil is added in water, the remaining surfactant, the liquid preservatives and the perfume. This part of the process is carried out at room temperature, stirring gently to obtain the desired size of the drops, between 5 and 20 microns. The products are rinsed perfectly and are extremely soft, in addition to having excellent rheological attributes both in storage and when applying and using them, and they are very effective in conditioning and moisturizing the skin, since the product has good stability, cleaning attributes and It makes enough foam.

Claims (15)

NOVELTY OF THE INVENTION CLAIMS

1. - A rinse-off personal cleaning composition comprising: (a) water, (b) from about 1% to about 60% by weight of a water-soluble surfactant, (c) a water-insoluble oil selected from polyalphaolefins highly branched that has the following formula wherein R1 is H or C1-C20 alkyl. R 4 is C 1 -C 2 alkyl, R 2 is H or C C 20, and R 3 is C 1 -C 20 preferably C 5 -C 20. n is an integer from 0 to 3 and m is an integer from 1 to 1000 and has a number average molecular weight of about 1000 to about 25,000, and (d) a hydroxy-containing crystalline stabilizer selected from (i) wherein R1 is - (C = O) -R4 (COH) xR5 (COH) and R6, R2 is R1 or H, R3 is R1 or H, R4 is aikile of CO-20, R5 is C0-C20 alkyl, R6 is C0-C20 alkyl, R4 + R5 + R6 = C10-22, and wherein 1 < x + y < 4, (ii) R7- (C = O) -OM, wherein R7 is -R4 (COH) xR5 (COH) and R6, M is Na +, K +, or Mg2 +, or H, and (iii) mixtures thereof .

2. The personal cleansing composition according to claim 1, further characterized in that it comprises from about 0.1% to about 10% by weight by weight of crystalline stabilizer containing hydroxy.

3. The personal cleansing composition according to claim 1 or 2, further characterized in that the crystalline hydroxy-containing stabilizer comprises tri-12-hydroxystearin.

4. The personal cleansing composition according to claims 1 to 3, further characterized in that it additionally comprises from 0.1% to 10% by weight of a fatty acid or C8-C22 fatty alcohol or mixtures thereof.

5. The personal cleansing composition according to any of claims 1 to 4, further characterized in that the water insoluble oil has a number average molecular number of about 2500 to about 6000, preferably about 2500 to about 4000.

6. The personal cleansing composition according to any of claims 1 to 4, further characterized in that the water insoluble oil has a viscosity of about 300 cst about 50,000 cst, preferably about 1000 to about 12,000, more preferably from about 1000 cst to about 4000 cst, to 40 ° C using the ASTM method D-445 to measure the viscosity.

7. The personal cleansing composition according to any of claims 1 to 6, further characterized in that it comprises from about 0.1% to about 10%, preferably from about 1% to about 5% by weight of the oil insoluble in water.

8. The personal cleansing composition according to any of claims 1 to 7, further characterized in that the water-insoluble surfactant is selected from the anionic surfactant, non-ionic, zwitterionic and amphoteric surfactants and mixtures thereof.

9. The personal cleaning composition according to claim 8, further characterized in that the water-soluble anionic surfactant is selected from alkyl sulfates, ethoxylated alkyl sulphates, alkylethyloxycarboxylates, alkyl glyceryl ether sulphonates, ethoxylic ether sulphonates, methylacetyltarates, fatty acylglycinates, N-acylglutamates , acyl isocyanates, alkylsulfosuccinates, alkylethylsulphosuccinates, alpha-sulfonated fatty acids, their salts and / or esters, ethoxylated alkyl phosphate esters, acyl sarcosinates and fatty acid / protein condensates, soaps such as ammonium, magnesium, potassium, triethanolamine and sodium salts of lauric acid, myristic acid and palmitic acid, acylapartates, carboxylic acid carboxylates, alkanolamide sulfosuccinates (ethoxylated), ethoxylated alkyl citrate sulfosuccinates, acylethylenediaminetriacetates, acylhydroxyethyl isocyanates, acylamide alkoxysulfates, linear alkylbenzenesulfonates, sulfonate s of paraffin, alpha-olefinsulfonates, alkylalcoxysulfates, and mixtures thereof.

10. The personal cleansing composition according to claim 8 or 9, further characterized in that the water-soluble anionic surfactant is ethoxylated alkyl sulfate. 1.

The personal cleansing composition according to any of claims 1 to 10, further characterized in that the composition is substantially soap-free.

12. The personal cleansing composition according to claim 8, further characterized in that the amphoteric water-soluble surfactant is selected from ammonium derivatives of the formula [VJ: wherein R-i is C5-C22 alkyl or alkenyl. R2 is CH2CH2OH or CH2CO2M, M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium and R3 is CH2CH2OH or H.

13. The personal cleansing composition according to claim 8, further characterized in that the zwitterionic surfactant is selected alkylbetaines of the formula R5R6R7N + (CH2) nC? 2M and amidobetaines of the formula (IX) wherein R5 is C5-C22 alkyl or alkenyl, T and R7 are independently C1-C3 alkyl, M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium, and n, m are each numbers from 1 to 4.

14 The composition according to claims 1 to 13, further characterized in that it additionally comprises from about 0.01% to about 5% by weight of the cationic polymeric skin conditioning agent selected from cationic guar gums, cationic polysaccharides, cationic homopolymers. and copolymers derived from acrylic and / or methacrylic acid; cationic cellulose resins, quaternized hydroxyethylcellulose ethers; cationic copolymers of dimethyldialiammonium chloride and acrylamide and / or acrylic acid; cationic homopolymers of dimethyldiallylammonium chloride; copolymers of dimethylaminoethyl methacrylate and acrylamide, acrylic acid / dimethyldiallylammonium chloride / copolymers of acrylamide, quaternized vinylpyrrolidone acrylate or methacrylate copolymers of aminoalcohol, quaternized copolymers of vinylpyrrolidone and dimethylaminoethyl methacrylamide, copolymers of vinylpyrrolidone / vinylimidazolium metachloride and polyalkylene and ethoxypolyalkyleneimines; quaternized silicones, terpolymers of acrylic acid, methacrylamidopropyltrimethylammonium chloride and methylacrylate and mixtures thereof.

15. - The personal cleansing composition according to any of claims 1 to 14, further characterized in that the water-insoluble oil has a number average particle diameter of about 1 miera to about 500 microns, especially of about 5 microns at around 50 microns. SUMMARY OF THE INVENTION The rinse-off personal cleaning composition comprising: water, from about 1% to about 60% by weight of a water-soluble surfactant, a water-insoluble oil selected from highly branched polyalphaolefins having the formula I R¿ R1- (- (- (CH2) p) m -R '(1) R3 wherein R 1 is H or C 1 -C 20 alkyl, R 4 is C 1 -C 2 alkyl. R2 is H or d-C20, and R3 is C1-C20 preferably C5-C20, n is an integer from 0 to 3 and m is an integer from 1 to 1000 and has a number average molecular weight of about 1000 to about 25,000, and a crystalline stabilizer, containing hydroxy selected from CH2-OR1 CH-OR, (i) CH2-OR3 wherein R1 is - (C = O) -R4 (COH) xR5 (COH) and R6, R2 is R1 or H, R3 is R1 or H, R4 is C0-20 alkyl, R5 is C0-C20 alkyl, R6 is C0-C20 alkyl, R4 + R5 + R6 = C10-22, and wherein 1 < x + y < 4, R7- (C = O) -OM, wherein R7 is -R4 (COH) xR5 (COH) and R6, M is Na +, K +, or Mg2 +, or H, and mixtures thereof; the personal cleansing compositions of the invention provide excellent product stability and rheology characteristics as well as excellent rinsing and softness of the skin. P00 / 546F