MXPA97004084A - Compositions for personal cleaning - Google Patents

Abstract

The present invention relates to a liquid composition for personal cleansing comprising: A) a regulatory rheological composition comprising: a.) From about 5% to about 60%, by weight of water-soluble surfactant, selected from anionic, nonionic, swerionic and amphoteric surfactants and mixtures thereof; b.) from about 0.01% to about 10% by weight of hydrophobically modified nonionic cellulose, selected from alkyl and modified alkynyl of C14- C18, hydroxyethyl cellulose ethers, having a degree of nonionic substitution in a range of from about 2.2, to about 2.8, and a degree of hydrophobic substitution in a range of from about 0.4% to about 5%, by weight and c) from about 0.01% to about 5%, by weight of a skin-conditioning polymeric cationic agent selected from the group consists of cationic guar gums, dimethyldialkyl ammonium chloride homopolymers, dimethyl aminoethyl methacrylate and acrylamide chloride copolymers, dimethyldialkyl ammonium chloride and acrylamide copolymers, acrylic acid / dimethyldialkyl ammonium chloride / acrylamide terpolymers, quaternized vinyl pyrrolidone acrylate or amino methacrylate copolymers alcohol, vinylpyrrolidone / vinyl imidazonium metachloride copolymers, polyalkyleneamines and mixtures thereof, and B) water and wherein the composition preferably exhibits a shear stress of about 150 Pa, at a cutoff index in a range of from about 400 s. 1, up to about 600 s-1 at a temperature of 25

Description

COMPOSITIONS FOR PERSONAL CLEANING BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to compositions for personal cleansing. In particular, it refers to soft compositions for personal cleansing with attributes for having a good skin feel, a rheological behavior, and foaming properties, which are suitable for simultaneously cleaning and conditioning the skin and / or the hair, and which can be used for example, in the form of preparations for baths with foam, products for the bath in shower, cleansers of the skin, cleaners for hands, face and body, shampoos, etc. BACKGROUND OF THE INVENTION Soft cosmetic compositions must meet a number of criteria including cleansing power, foaming properties and mild / low irritation / good feeling with respect to the skin, hair and ocular mucosa. The skin is made up of several layers of cells, which cover and protect the keratin and fibrous proteins of collagen, which form the outline of its structure. It is known that the outermost part of these layers, which we refer to as the stratum corneum, is composed of bundles of proteins 250? surrounded by thin layers of 80 A. Similarly, the hair has an outer protective cover, which is called cuticle, which protects the hair fiber. Anionic surfactants can penetrate the stratum corneum membrane, and the cuticle and, by delipidization, destroy the integrity of the membrane.

This interference with the protective membranes of the skin and hair can lead to the sensation of harshness on the skin and irritation of the eyes, and may eventually allow the surfactants to interact with keratin and hair proteins, creating irritation and loss of the protective barrier, and water retention functions. The ideal cosmetic cleaners, should clean generously, without removing the natural fat and / or dry the hair and skin, and without irritating the ocular mucosa, or leave the skin restirada after using them frequently. Most soaps that generate foam, products for the shower and tub, shampoos and bars, have this consequence. It is known that some synthetic surfactants are mild. However, the main drawback of most soft synthetic surfactant systems is that compared to shampoos and soap bars with the highest quality standards, they have little foam generation when they are formulated to give shampoo or personal cleansing . Therefore, surfactants that are among the softest, have little foam generation. On the other hand, the use of highly foamed anionic surfactants with known foam propulsion can produce an acceptable quality and volume of foam, but at the expense of the clinical smoothness of the skin. These two factors make the selection of the surfactant, and the formulation that benefits the softness and foam generation, a delicate balance process. In addition to the cleaning and foam generation attributes desired by consumers, it is of particular value that personal cleansing products provide some additional rheological properties when used. In particular, consumers prefer a product in the form of shower gel, which is capable of demonstrating thinning behavior by cutting, during application to the skin. It is known that water-soluble polymers can be used to produce a product with thickening attributes, in addition to hydrophobically modified water-soluble polymers, can exhibit products with improved thickening performance, and impart cutting thinning characteristics. However, it is also known that said effects of thickening / thinning by cutting the product, are affected by the total level of surfactant present in the system and in fact, the thickening / thinning attributes can be significantly reduced, even in the presence of very low levels of water-soluble surfactants. A side effect of high concentrations of surfactants and electrolyte systems containing soluble polymers and hydrophobically modified water (HMWSPs), is that increased levels of surfactant, HMWSP can become increasingly insoluble in the product matrix. Accordingly, there is a need for personal cleansing products, which provide acceptable characteristics in the feeling of the skin during use, but which do not dehydrate or result in a loss in skin flexibility, which produces a level of conditioning for the skin, in a product for washing and rinsing, which previously had only been provided separately in the form of a cosmetic moisturizer for after cleaning, which has demonstrated a desirable rheological behavior during its use , and that will produce a foam that is stable and of high quality, which are effective cleansers for hair and skin, which have good rinsing characteristics, and which at the same time, have stable product and viscosity characteristics, and remain completely stable in the long term, and in storage conditions with high temperatures. The water-soluble nonionic cellulose ethers are used in a variety of applications, including hair care compositions. Ethers nonionic cellulose widely used, and commercially available, include methyl cellulose, methyl cellulose hydroxy propyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxyethyl ethyl cellulose. Some modified cellulose ethers have been disclosed in US Patent US-A-4,228,277, issued to Landoll, issued October 14, 1980, which are relatively low molecular weight but with the ability to produce highly viscous aqueous solutions in practical concentrations. These materials are ethers nonionic cellulose having a degree of substitution nonionic enough, selected from the group consisting of methyl, hydroxyethyl, and hydroxypropyl, to cause water soluble and which are further substituted with a radical hydrocarbon having from 10 to 24 carbon atoms in an amount between 0.2 weight percent, and the amount which causes said cellulose ether to be less than 1% by weight, soluble in water. The cellulose ether that will be modified is preferably one of low to medium molecular weight; for example, less than 800,000 and preferably between 20,000 and 700,000 (75 to 2,500 D.P.).

Modified cellulose ethers have been described for use in a variety of types of compositions. Landoll in US Pat. No. 4,228,277, teaches the use of certain materials in shampoo formulations. The Hercules sales literature shows the use of modified cellulose ether materials in shampoos, liquid soaps, and lotions. US Pat. No. 4,683,004 describes the use of modified cellulose ethers in hair compositions in the form of mousse. US Pat. No. 4,485,089 discloses dentifrice compositions containing modified cellulose ethers. It has now been found that personal cleansing compositions having improved attributes for skin feel and moisturizers, both during and after use, which provide desirable thickening / thinning (rheology) benefits, and a good Product stability can be formed by the combination of certain modified cellulose ethers, cationic polymers and surfactants. It has also been found that certain modified cellulose ethers have specific degrees of substitution and chain lengths that confer particular benefits on personal cleansing compositions, in terms of stability and application characteristics.

SUMMARY OF THE INVENTION The subject matter of the present invention is a stable, soft personal cleaning product, with generation of foam, thinning by cutting, suitable for cleaning the skin or hair, and which can be used as a product for the bath with foam, and in shower, as a skin cleanser and shampoos, etc. Accordingly, one of the aspects of the present invention is to provide a liquid cleanser for personal cleansing, which comprises: a) from about 5% to about 60% by weight of water-soluble surfactant, selected from anionic, nonionic, zwitterionic and amphoteric surfactants, and mixtures thereof; b) from about 0.01%, to about 10% by weight of a hydrophobically modified nonionic cellulose ether, selected from C10-C24 alkyl and alkenyl modified methyl, hydroxyethyl and hydroxypropyl cellulose ethers, which have a degree of non-ionic substitution in a range of from about 1.8 to about 4 and a degree of hydrophilic substitution in a range of from about 0.1% to about 1%, by weight; c) from from about 0% to about 10%, by weight of water soluble polyol; d) from about 0.01% to about 5% by weight of a cationic polymeric skin conditioning agent; and e) water The composition preferably exhibits a cut-off stress of about 150 Pa, at a cut-off index in a range of from about 100s-1, to about 600s-1, more preferably from about 400s-1, to about 600s-1 in a temperature of 25 ° C. In another aspect of the present invention, there is provided a composition for personal cleansing comprising: a) from about 5% to about 60%, by weight of water-soluble surfactant, selected from anionic, non-ionic, and amphoteric surfactants, and mixtures thereof; b) from about 0.01% to about 10% by weight of a hydrophobically modified nonionic cellulose ether selected from alkyl and modified alkenyl C- | 4-C13, hydroxyethyl cellulose ethers, having a degree of non-ionic substitution in a range of from about 2.2 to about 2.8, and a degree of hydrophobic substitution in the range of from about 0.4% to about 6%, by weight; and c) water.

Said composition, preferably exhibits a cut stress of about 150 Pa, in a cutting amount in a range of from about 400s-1., up to approximately 600s-1, at a temperature of 25 ° C. In a highly preferred embodiment, the present invention takes the form of a liquid cleaner composition that produces foam with superior characteristics of skin feel and rinsing, excellent rheological behavior, which improves perceived dryness and skillfully graduates, as well such as measurements of skin hydration, and loss of water through the epidermis (TEWL), in combination with excellent foam generation, good stability, cleansing ability, and conditioning performance. All concentrations and proportions of the present invention are by weight of the cleaning composition, unless otherwise specified. The length of the surfactant chain is also on the basis of the average weight of the chain length, unless otherwise specified. The liquid cleaning compositions of the present invention are based on a combination of mild surfactants with some hydrophobically modified cellulose ethers and skin conditioning polymeric agents. The preferred embodiments also contain perfume and cosmetic oils. The compositions of the present invention contain, as an essential component, a hydrophobically modified cellulose ether, as a modifying rheological agent. Cellulose ethers prior to hydrophobic modification, have a degree of nonionic substitution in a range of from about 1.8 to about 4.0, preferably from about 2 to about 3, and especially from about 2.2, to about 2.8. The cellulose ethers are then additionally substituted with alkyl or alkenyl groups, having from 10 to 24, preferably from about 14 to 18, carbon atoms in an amount from about 0.1 to about 1, preferably from about 0.3 to about 0.8, and especially from about 0.4 to about 0.6 weight percent. The cellulose ether, which will be modified, is preferably one of low or medium molecular weight, for example, less than 800,000 and preferably, between 20,000 and 700,000 (75 to 2500 D.P.). The preferred cellulose ether substrate is hydroxyethyl cellulose (HEC) of 50,000 to 700,000 molecular weight. The hydroxyethyl cellulose of this molecular weight level is the most hydrophilic of the finished materials. In effect, the control of the modification process and the control of the properties of the modified product can be more precise with this substrate. The hydrophilicity of most commonly used nonionic cellulose ethers varies in the general direction: hydroxyethyl >; hydroxypropyl > methyl hydroxypropyl > methyl. The long chain alkyl modifier can be adhered to the cellulose ether substrate by means of an ether, ester or urethane linkage. The ether bond is preferred. Although we refer to the modified cellulose ether materials, as "modified alkyl", (the term "alkyl" as generally used in the present invention, also includes the use of alkenyl), it will be recognized, that except in the case of where the modification is carried out with an alkyl halide, the modifier is not a simple long chain alkyl group. The group is in fact an alphahydroxyalkyl radical in the case of an epoxide, a urethane radical in the case of an isocyanate, or an acyl radical in the case of an acid or acyl chloride. General methods for making the modified cellulose ethers are shown in US Pat. No. 4,228,277, issued to Landoll, in column 2, lines 36 to 65. It has been found that modified cellulose ethers, from Definite substitution levels and hydrophobic chain length are particularly desirable for use as Theological modifiers in the personal cleansing compositions of the present invention. The materials are capable of stabilizing the suspension of the dispersed phases, and when used with the additional components in the compositions of the present invention, they produce rheologically thick products, which when used, exhibit a desirable thinning behavior by cutting. Furthermore, it has been found that from the viewpoint of the improvement of viscosity, combined with the thinning behavior by cutting, the combination of cellulose ethers hydrophobically modified with cationic polymeric skin conditioning agents, when applied to the skin or to the hair are particularly beneficial. The rheology modifying agents, for use in the present invention, are selected from hydrophobically modified water soluble polymers, and in particular hydrophobically modified hydroxy ethyl cellulose polymers. Hydrophobically modified hydroxy ethyl cellulose polymers (HMHEC) have a 1% aqueous viscosity ranging from about 8,000 to about 13,000 mPas ((Brookfield LVT viscometer, bar No. 4, speed 4). the market, suitable for use in the present invention is NATROSOL PLUS Grade 330 CS (RTM), a hydrophobically modified hydroxyethyl cellulose, which is available from Aqualon Company, Wilmington, Del. This material has an alkyl substitution C < g, from 0.4% to 0.8% by weight The molar substitution of hydroxyethyl, for this material is from 3.0 to 3.7 The average molecular weight for water soluble cellulose, prior to modification, is approximately 300,000 Another material of this type, under the trade name of NATROSOL PLUS CS Grade D-67 (RTM), is sold by Aqualon Company, Wilmington, Delaware.This material has an alkyl substitution. what C < | 5, from 0.50% to 0.95%, by weight. The molar substitution of hydroxyethyl, for this material is from 2.3 to 3.7. The average molecular weight for water-soluble cellulose, prior to modification, is approximately 700,000. For use in the present invention, hydroxyethyl cellulose polymers modified by C14-C1S alkyl and alkenyl, having an ethoxylation degree of from about 1.8 to about 3.2, preferably from about 2.0 to about 3.0, more preferably from about 2.2, up to about 2.8 and a level of alkyl and alkenyl substitution of from about 0.3 to about 0.8, preferably from about 0.4 to about 0.6. Highly preferred, are the cetyl modified hydroxyethyl cellulose polymers, which are available from Aqualon Co., under the tradename of Polysurf 67 (RTM). The hydrophobically modified cellulose ether is preferably present at a level of from about 0.02% to about 5%, more preferably from about 0.05% to about 1%, and especially from about 0.1% to about approximately 0.5% by weight. The modified cellulose ethers of the present invention are particularly valuable for providing excellent stability characteristics at normal temperatures, as well as for providing slimming performance by cutting, in a matrix of high surfactant content and to provide improved rheological behavior, in combination with skin conditioning agents based on cationic polymers. The compositions according to the present invention are cutting thinners, and preferably exhibit a cutting tension of from about 150 Pa in a cutting amount in a range from about 100s-1 to about 600s- "the one temperature of 25 °. C. Compositions that exhibit a cut stress of about 150 Pa in a cutting amount in a range of from about 400s-1 to about 600s-1 at a temperature of 25 ° C (measured using a Carri Rheometer) are highly preferred. -Med CSL 100, with a 4 cm conical bar and 2 degree truncated, 49 microns.) Suitable neutralizing agents to be used in the neutralization of an acidic group containing the rheology modifying agents described in the present invention, include sodium hydroxide, potassium hydroxide, ammonium hydroxide, monoethanolamine, diethanolamine and triethanolamine, and mixtures thereof.

The compositions according to the present invention also preferably include a cationic skin conditioning polymer. The cationic polymer is valuable in the compositions according to the present invention, to foresee the attributes of the sensation in the skin, and to improve the Theology and application characteristics in the presence of the portion of the hydrophobically modified cellulose ether. The skin-conditioning agent based on polymers is preferably present at a level of from about 0.01% to about 5%, preferably from about 0.05% to about 3%, and especially from about 0.1% up to about 2% by weight. Suitable polymers are materials with high molecular weight (average molecular mass weight determined, for example, by light scattering, being generally from about 2,000 to about 5,000,000, preferably from about 5,000, to about 3,000,000, more preferably from 100,000 to about 1, 000,000). Representative classes of polymers including cationic polysaccharides; cationic homopolymers and copolymers, acrylic and / or methacrylic acid derivatives; cationic cellulose resins; chloride of cationic copolymers of dimethyldiallylammonium and acrylamide and / or acrylic acid; chloride of dimethyldiallylammonium cationic homopolymers; Cationic polyalkylene and ethoxypolyalkylene mines; quaternized silicones, and mixtures thereof.

By way of example, cationic polymers suitable for use in the present invention include cationic guar gums, such as hydroxypropyl trimethyl ammonium guar gum (ds from 0.1-1 to 0.22), commercially available under the trade names of Jaguar C-14-S (RTM) and Jaguar C-17 (RTM) and also Jaguar C-16 (RTM), which contain hydroxypropyl substituents (ds from 0.8 to 1.1), in addition to the cationic groups specified above, and quaternized cellulose ethers, commercially available, under the trade names of Ucare Polymer JR-30M, JR-400, Catanal (RTM) and Celquat. Other suitable cationic polymers are homopolymers of dimethyldiallylammonium chloride, commercially available under the trade name Merquat 100, dimethyl aminoethylmethacrylate and acrylamide copolymers, copolymers of dimethyldiallylammonium chloride and acrylamide, commercially available under the trade names of Merquat 550 and Merquat S, acrylic copolymers of dimethyldiallylammonium acid and of acrylamide chloride, commercially available under the tradename Merquat 3300, quaternized vinyl pyrrolidone acrylate, or methacrylate alcohol-amino copolymers, commercially available under the name of Gafquat, for example Polyquaternium 1 1, 23 and 28 (quaternized copolymers of vinyl pyrrolidone and dimethyl aminoethyl methacrylate - Gafquat 755 N and HS-100), copolymers of vinyl pyrrolidone / vinyl imidazolium methochloride, commercially available under the trade names of Luviquat HM552, Polyquaternium 2, and polyalkyleneimine s, such as ethoxylated polyethyleneimine and polyethylenimine. The compositions of the present invention may also comprise a nonionic or anionic polymeric thickener component, especially water soluble polymeric materials, having a molecular weight greater than about 20,000. By "water-soluble polymer" is meant the material that will form a solution substantially cleared in water at a concentration of 1% at a temperature of 25 ° C, and the material will increase the viscosity of the water. Examples of water-soluble polymers which can be used as an additional thickener component in the present compositions are hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, polyethylene glycol, polyacrylamide, polyacrylic acid, polyvinyl alcohol, polyvinyl pyrrolidone K-120 , dextrans, for example Grade 2P purified crude Dextran, commercially available in D & amp; amp;; O Chemicals, carboxymethyl cellulose, exudate plants such as acacia, ghatti, and tragacanth, seaweed extracts, such as sodium alginate, propylene glycol alginate and sodium carrageenan. The natural polysaccharide materials are preferred as additional thickeners for the present compositions. Examples of such materials are guar gum, locust bean gum, and xanthan gum. Also preferred for the present invention is hydroxyethyl cellulose having a molecular weight of about 700,000. Additional polymeric thickeners include copolymers of acrylic acid / ethyl acrylate, and carboxyvinyl polymers sold by B. F. Goodrich Company, under the trademark of Carbopol resins. These resins consist essentially of a. crosslinked polymer of plialquenyl polyether colloidally soluble in water of acrylic acid, crosslinked with from 0.75% up to 2.00% of a crosslinking agent such as for example polyallyl sucrose or pentaerythritol polyallyl.

Examples include Carbopol 934, Carbopol 940, Carbopol 950, Carbopol 980 Carbopol 951 and Carbopol 981. Carbopol 934 is a water soluble polymer of crosslinked acrylic acid with about 1% polyallyl ether of sucrose having an average of about 5.8 allyl groups for each molecule of sucrose. Also suitable for use in the present invention are the hydrophobically modified cured crosslinked polymers of acrylic acid having amphipathic properties marketed under the Trade Name of Carbopol 1382, Carbopol 1342 and Pemulen TR-1 (Design of I CTFA: Acrylate / Acrylate Cross-linked Polymer). Rent 10.30). A crosslinked polyalkenyl polyether acrylic acid polymer blend and hydrophobically modified crosslinked acrylic acid polymer is suitable for use in the present invention. If present in the compositions of the present invention, the polymeric thickener component is at a level of from 0.3% to 5.0%, preferably from 0.4% to 3.0% by weight. Additional thickeners suitable for use in the present invention include esters of ethylene glycol or polyethylene glycol of a fatty acid, having from about 16 to about 22 carbon atoms and up to 7 ethyleneoxyl units, preferably ethylene glycol stearates, both the mono and the distearate, but in particular, the distearate containing less than about 7% the mono stearate, fatty acid alkanolamides, having from about 16 to about 22 carbon atoms, preferably from 16 to 18 carbon atoms, such as stearic monoethanolamide, stearic diethanolamide, stearic monoisopropanolamide and stearic monoethanolamide, dimethylamine alkyl oxides (C- | g-C22) > such as stearyl dimethyl amine oxide and electrolytes, such as magnesium sulfate salts and sodium chloride salts. A preferred feature of the compositions of the present invention is a solubilizing agent for the hydrophobically modified cellulose ether. The solubilizing agent is valuable in limiting the aggregation of cellulose ether, possibly by means of the interaction around the remaining hydrophobic chains in the polymeric portions. The solubilizing agent is preferably present at a level of from about 0.1% to about 10%, more preferably from about 0.5% to about 5%, and especially from about 1% to about 4% by weight. The proportion of hydrophobically modified cellulose ether per solubilizing agent is in a range of from about 0.1: 10 to about 0.2: 5, preferably from about 0.3: 5 to about 0.4: 1. Suitable solubilizing agents include water soluble polyols . Preferred are water soluble polyols having molecular weights of from about 40 to about 2000, more preferably from about 50, to about 500 and especially, from about 58 to about 200, and multiple hydroxyl groups. The multiple hydroxyl groups, as defined in the present invention, mean hydroxyl groups of from about 2 to about 6. Water soluble polyols suitable for inclusion in the present invention, in the form of solubilizing agents, are selected from glycerin, glycol. propylene, hexylene glycol, mannitol, polyethylene glycol, sorbitol, propylene glycol ethers and propylene glycol methyl glycol, (for example ethylglucam E-20 and propylglucam P-10), glycol polyethylene ethers and propylene glycol lanolin alcohol (for example Solulan-75 example) and mixtures thereof. Highly preferred solubilizing agents for use in the present invention are glycerin and propylene glycol. The mild surfactants suitable for inclusion in compositions according to the present invention, can be selected from anionic, nonionic, amphoteric and zwitterionic surfactants. The total level of surfactant is preferably from about 5% to about 60%, more preferably from about 6% to about 40%, and especially from about 8% to about 35% by weight. Preferred compositions contain a mixture of anionic surfactants with zwitterionics and / or amphoteric surfactants. The level of the components of individual anionic, zwitterionic and amphoteric surfactants, where present, is in the range of from about 1% to about 15%, and especially from about 2% to 13% by weight of the composition approximately, while the level of non-ionic surfactant, where present, is in a range of from about 0.1%, to about 20% by weight, preferably from about 0.5% to about 16%, more preferably from about 1% up to 12% by weight approximately. The weight ratio of the anionic surfactant: zwitterionic and / or amphoteric surfactant is in a range of from about 1: 2 to 6: 1. Other suitable compositions within the scope of the present invention comprise mixtures of anionic, zwitterionic surfactants and / or amphoteric, with one or more non-ionic surfactants. To be used in the present invention, preferred non-ionic soluble or dispersible surfactants, selected from ethoxylated animal and vegetable oils, and fats and mixtures thereof, in the present invention, are sometimes referred to as "derived non-ionic surfactants". of oil". Suitable anionic surfactants for inclusion in the compositions of the present invention, can generally be described as mild synthetic detergent surfactants, and include ethoxylated alkyl sulphates, alkyl glyceryl ether sulfonates, acyl methyl taurates, fatty acyl glycinates, glutamates N-acyl, acyl isethionates, alkyl sulfosuccinates, alpha-sulfonated fatty acids, their salts and / or esters, ethoxy alkyl carboxylates, alkyl phosphate esters, ethoxylated alkyl phosphate esters, acyl sarcosinates and fatty acid / protein condesados , and mixtures thereof. The length of the alkyl and / or acyl chains, for these surfactants are C3-C22. preferably from C <; | rj-Ci 8. more preferably of C12-C14. From the standpoint of optimum softness and foam generating characteristics, the salts of sulfuric acid esters of the reaction product of 1 mole of a high-fat alcohol, and from about 1 to about 12 moles of ethylene, with sodium and magnesium, are preferred for use in the present invention, with counterions being preferred. Particularly preferred are alkyl 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, and sodium laureth-3,6-sulfate. In the preferred embodiments, the anionic surfactants contain at least about 50%, especially at least about 75% by weight, of ethoxylated alkyl sulfate. Compositions suitable for use in the present invention also contain an amphoteric surfactant. Suitable amphoteric surfactants for use in the compositions of the present invention include: a) imidazolinium surfactants of the formula (I) wherein R-j is C7-C22 alkyl or alkenyl. R2 is hydrogen or CH2Z, each Z is independently CO2M or CH2CO2M, and M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium; and / or ammonium derivatives of formula (II) C2H4OH R2 wherein R- |, R2 and Z are as defined above; aminoalkanoates of formula (III) R1NH (CH2) nCO2M iminodialkanoates of formula (IV) R1N [(CH2) mCO2M] 2 and iminopolyalkanoates of formula (V) Rl-fN (CH2) pJq íCH2C? 2 J2 I CH2CO2M wherein n, m, p, and q are amounts from 1 to 4, and R-j and M are independently selected from the groups specified above; and c) mixtures thereof.

Suitable amphoteric surfactants of type (a) are commercially available under the trade name Miranol and Empigen, and are understood to comprise a complex mixture of species. Traditionally, it has been described that the Miranoles have the general formula I, however, the CTFA Cosmetic Ingredient Dictionary, 3rd. Edition, indicates the non-cyclical structure II, while the 4th. Edition, indicates another structural isomer in which R2 is O-linked instead of N-linked. In practice, there is similarly a complex mixture of cyclical and non-cyclic species, and in the present invention both definitions are provided, for purposes of perfection. Examples of suitable amphoteric surfactants of type (a) include compounds of formula I and / or II, in which R- | is C 8 H 17 (especially iso-capryl), C 9 H 19 and C 1 1 alkyl H23. Compounds in which R ^ is Cg-H -19, Z is CO2M and R2 is H are especially preferred; the compounds in which R- | is C11 H23, Z is CO2M and R2 is CH2CO2M; and the compounds in which R- | is C- | 1 H23, Z is CO2M and R2 is H.

In the CTFA nomenclature, materials suitable for use in the present invention include cocoamfocarboxipropionate, cocoamfocarboxyl propionic acid, and especially cocoamfoacetate and cocoamodiadetate (to which they are otherwise referred to as cocoamfocarboxiglycinate). Specific commercial products include those sold under the trade names of Ampholak 7TX (carboxymethyl tallow sodium propyl amine), Empigen CDL60 and CDR 60 (Albright &Wilson), Miranol H2M Conc. Miranol C2M Conc. N.P. , Miranol C2M conc. O.P. , Miranol C2M SF, Miranol CM Special (Rhdne-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 a number of amphoteric surfactants of this type available on the market, are manufactured and sold in the form of electroneutral complexes with, for example, hydroxide or anionic sulfate counterions or sulfonate surfactants, especially those of the alcohol type. sulfated Cg-Ci s- Cg-Ci ethoxylated alcohol or Cg-Ci acryl glyceride- However, from the standpoint of the softness and stability of the product are preferred, compositions that are essentially free of surfactants of sulphated alcohol (not ethoxylated). It should also be taken into account that the concentrations and proportions of weight of the amphoteric surfactants, in the present invention are based on the non-complex forms of surfactants, any of the counterions of anionic surfactants, have been considered as part of all the content of the anionic surfactant component. Examples of the preferred amphoteric surfactants of type (b) include Polytrimethylene N-alkyl, carboxymethylamines sold by Berol Nobel, under the tradename Ampholak X07 and Ampholak 7CX, and also the salts, especially the triethanolammonium salts and salts thereof. N-lauryl-beta-amino propionic acid, and N-lauryl-imino-dipropionic acid. These materials are sold under the trade name of Deriphat by Henkel and Mirataine by Rhóne-Poulenc. The compositions of the present invention, they may also contain from about 0.1%, to about 20%, more preferably from 0.1% to about 10%, and especially from about 1% to about 8% of zwitterionic surfactant. Suitable betaine surfactants to be included in the cleaning compositions include alkyl betaines of the formula RsRgRyN "*" (CH2) nC? 2M (VI) and betaines amido of the formula (VI l) R6 R5CON (CH2) mN (CH2 ) nCO2M R7 wherein R5 is C12-C22 alkyl or alkenyl. ^ 6 and ^ 7 are independently C 1 -C 3 alkyl, M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium, and n, m each numbers from 1 to 4. Preferred betaines include cocoamidopropyldimethylcarboxymethyl betaine, betaine of lauryl amidopropyl dimethylcarboxymethyl and betaine of Tego. The compositions of the present invention preferably also contain from about 0.1% to about 20%, preferably from about 1% to about 15%, and more preferably from about 2% to about 10% by weight, of a nonionic surfactant derived from oil or a mixture of nonionic surfactants derived from oil. The nonionic surfactants derived from oil, are valuable in the compositions according to the present invention, for the provision of the benefits of the sensation in the skin, during and after being used. Suitable non-ionic oil-derived surfactants, for use in the present invention, include emollients derived from vegetable and water-soluble animals, such as triglycerides with an inserted polyethylene glycol chain; mono and di-glycerides ethoxylates, derivatives of polyethoxylated lanolin and ethoxylated butter. A preferred class of oil-derived nonionic surfactants, for use in the present invention, have the general formula (VIII).

Or I! RC0CH2CH (OH) CH2 (OCH2CH2) n0H wherein n is from about 5 to about 200, preferably from about 20 to about 100, more preferably from about 30 to about 85, and wherein R comprises an aliphatic radical, which has on average from about 5 to 20 carbon atoms, preferably from about 7 to about 18 carbon atoms. Suitable ethoxylated oils and fats of this class include 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, and corn oil, preferably glyceryl seboate and glyceryl cocoate. Suitable nonionic surfactants derived from oil of this kind are commercially available from Croda Inc. (New York, USA), under their line of Crovol materials, such as Crovol EP40 (PEG 20 night primrose glyceride), Crovol EP 70 (PEG 60. evening primrose glyceride), Crovol A-40 (PEG 20 almond glyceride), Crovol A-70 (PEG 60 almond glyceride), Crovol M-40 (PEG 20 corn glyceride), Crovol M- 7.0 (PEG 60 corn glyceride), Crovol PK-40 (PEG 12 glyceride from palm pulp), and Crovol PK-70 (PEG 45 palm pulp glyceride) and under its line of Solan materials, such as polyethoxylated lanolins Solan E, E50 and X, and Aqualose L-20 (PEG 24 alcohol of lanolin) and Aqualose W15 (PEG 15 alcohol of lanolin), which are commercially available in Westbrook Lanolin. Additional suitable surfactants of this class are commercially available from Sherex Chemical Co. (Dublin, Ohio, USA) under their Varonic Ll surfactant line. These include, for example, Varonic Ll 48 (polyethylene glycol (n = 80) glyceryl seboate, to which we refer alternatively as PEG 80 glycolate seboate), Varomjc L.I2 (PEG 28 glyceryl seboate), Varonic Ll 420 (PEG 200 seboato of glyceryl), and Varonic Ll 63 and 67 (PEG 30 and PEG 80 glyceryl cocoates). Other oil-derived emollients suitable for use are derivatives of PEG corn, avocado, and babassu oil, as well as Softigen 767) PEG (6) caprylic / capric glycerides). For use in the present invention, nonionic surfactants derived from vegetable fats compounds of the fruit of the Shea Tree (butirospermum Karkii Kotschy) and derivatives thereof are also suitable. This vegetable oil known as Shea Butter, is used extensively in Central Africa with a variety of purposes, such as making soap, and in the form of a protective cream, which are sold on the market by Sederma (78610 Le Perray En Yvelines, France). Particularly suitable are the ethoxylated derivatives of Shea Butter, available from Karlshamn Chemical Co. (Columbus, Ohio, USA), under their line of Lipex chemicals, such as Lipex 102 E-75 and Lipex 102 E-3 (mono, di- ethoxylated glycerides from Shea Butter). Similarly, the ethoxylated derivatives of Mango, Cacao and Hipe butter can be used in compositions according to the present invention. Although these are classified as non-ionic ethoxylated surfactants, it is understood that a certain proportion can remain as non-ethoxylated vegetable oil or fat. Other suitable nonionic oil-derived surfactants include ethoxylated almond oil derivatives, peanut oil, rice bran oil, wheat germ oil, linseed oil, jojoba oil, apricot kernel oil, walnut, walnuts palm, pistachio nuts, sesame seeds, pomace seeds, juniper oil, corn oil, peach kernel oil, poppy oil, pine oil, castor oil, soybean oil, avocado oil, Saffron flower oil, coconut oil, hazelnut oil, olive oil, grape seed oil, and sunflower seed oil. From the standpoint of the characteristics of optimum softness and feel in the skin, the highly preferred nonionic oil-derived surfactants for use in the present invention are Lipex 102-3 (RTM) (PEG-3 ethoxylated derivatives of Butter of Shea) and Softigen 767 (RTM) (PEG-6 caprylic / capric glycerides). In addition to the oil-derived nonionic surfactants described above, the compositions of the present invention may also comprise an auxiliary nonionic surfactant at levels of from about 0.1% to about 20%, more preferably from about 0.1% to approximately 10%, and especially from approximately 1% to approximately 8% by weight. Surfactants of this class include C12-C14 mono-fatty acid diethanolamides, sucrose polyester surfactants and polyhydroxyl amide fatty acid surfactants, having the general formula (IX). 9 R. R8 ~ C -N-2, Preferred N-alkyl, N-alkoxy, or N-aryloxy polyhydroxyl amide fatty acid surfactants according to formula (IX) are those in which R $ is C5-C31 hydrocarbyl, preferably Cg-hydrocarbyl C ^, including straight or branched chain alkyl and alkenyl, or mixtures thereof, and Rg is usually C 1 -C β alkyl or hydroxyalkyl, preferably methyl, or a group of the formula -R 1 -O-R 2, wherein R 1 it is C2-C8 hydrocarbyl, which includes straight chain, branched and cyclic chain (which includes aryl), and is preferably C2-C4 alkylene, R2 is straight chain, branched chain and cyclic hydrocarbyl, which includes aryl and oxyhydrocarbyl, and it is preferably C1-C4 alkyl, especially methyl, or phenyl. Z2 is a polyhydroxyhydrocarbyl portion 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 a alkoxylated derivative (preferably ethoxylated or propoxylated) thereof. Preferably Z2 will be derived from a reducing sugar in a reductive amination reaction, more preferably Z is a glycityl portion. Suitable reducing sugars include glucose, fructose, maltose, lactose, galactose, mannose, and xylose, as well as glyceraldehyde. They can be used as raw materials, high dextrose corn syrup, high fructose corn syrup, and high maltose corn syrup, as well as the aforementioned list of sugars. These corn syrups can produce a mixture of sugar components for Z2. It should be understood that it is not intended to exclude other suitable raw materials. Preferably Z2 will be selected from the group consisting of -CH2- (CHOH) n-CH2OH, -CH (CH2? H) - (CHOH) n- - CH2H, CH2 (CHOH) 2 (CHOR ') CHOH) -CH2OH, in where n is an integer from 1 to 5, inclusive, R 'is H or a cyclic mono or polysaccharide, and alkoxylated derivatives thereof. As can be seen, the most preferred are glycityls wherein n is 4, particularly -CH 2 - (CHOH) 4 -CH 2? H. Most preferred is the polyhydroxyl amide fatty acid having the formula Rg (CO) N (CH3) CH2 (CHOH) 4CH2? H, wherein Rg is a straight chain alkyl or alkenyl group. In the compounds of the above formula, R? -CO-N < it can be, for example, cocoamide, estaeramide, oleamide, lauramide, myristamide, capricamide, palmiamide, seboamide, etc. A preferred process for making the above compounds having formula (IX), comprises the reaction of a fatty acid triglyceride with a substituted-N-polyhydroxy amine, in the substantial absence of lower alcohol solvent (C-1-C4), but preferably, with an alkoxylated alcohol or alkoxylated alkyl phenol, such as NEODOL and using an alkoxide catalyst at temperatures of from about 50 ° C, to about 140 ° C, to provide large outputs (90-98%) of the products desired. The compositions of the present invention can also include an insoluble perfume or cosmetic oil or wax, or a mixture thereof, at a level of up to about 10%, preferably up to about 3% by weight, wherein the oil or wax, it is insoluble in the sense of being insoluble in the product matrix, at a temperature d, e 25 ° C. In addition to said oils or waxes, they can provide emolliency, softness and rinsing characteristics to personal cleansing compositions according to the present invention. However, it is a feature of the present invention that compositions having excellent emolliency and smoothness can be provided, along with desirable physical attributes (clarity, etc.), which are substantially oil-free, for example, containing less than about 1%, preferably less than 0.5% by weight of an added oil phase. Physically, preferred compositions of this type take the form of an optically cleared solution or a microemulsion. In compositions that include an additional perfume and a cosmetic oil or wax, preferably the weight ratio of a nonionic surfactant derived from oil to the added oil is at least about 1: 2, more especially at least 3: 1. approximately. The insoluble cosmetic oils and waxes suitable for use in the present invention can be selected from water-insoluble silicones, including non-volatile polyalkyl and polyaryl siloxane rubbers and liquids, cyclic and linear volatile polyalkylsiloxanes, polyalkoxylated silicones, modified ammonium silicones quaternary and amino, rigid and reinforced cross-linked silicones and mixtures thereof, C1-C24 esters of C8-C30 fatty acids, such as isopropyl myristate, myristyl myristate and cetyl ricinoleate, esters of Cg-C3Q benzoic acid, beeswax, saturated and unsaturated fatty alcohols, such as behenyl alcohol, hydrocarbons, such as mineral oils, squalene and vaseline squalene, polybutene, fatty sorbitan esters (see US Patent No. 3988255, issued to Seiden, issued October 26, 1976), lanolin derivatives and oil similar to lanolin, plant and animal triglycerides , such as almond oil, peanut oil, wheat germ oil, rice bran oil, linseed oil, jojoba oil, apricot kernel oil, walnut, palm nuts, pistachio nuts, sesame, marc seeds, juniper oil, corn oil, peach kernel oil, poppy seed oil, pine oil, castor oil, soybean oil, and sunflower seed oil, and esters of C <; | -C24 of dimer and trimer acids, such as diisopropyl dimerate, diisostearyl malate, diisostearyldimerate and triisostearyl trimerate. The viscosity of the final composition (Brookfield RVT DCP, 1 rpm with Cone CP41 or CP52, 25 ° C, undiluted) is preferably at least about 500 cps, more preferably from about 1,000, up to about 50,000 cps, especially from about 4,000 to about 30,000 cps, more especially from about 4,000 to about 15,000 cps. The cleaning compositions may optionally include other humectants for hair or skin, which are soluble in the matrix of the cleaning composition. The preferred level of said humectants is from about 0.5% to about 20% by weight. In preferred embodiments, the humectant is selected from the essential amino acid compounds, which are naturally found in the skin corneum sltratum and non-occlusive non-occlusive polyols, soluble in water and mixtures thereof. Some examples of the most preferred non-occlusive humectants are polybutene, squalene, sodium pyrrolidone carboxylic acid, lactic acid, guanadine L-proline, pyrrolidone, hydrolyzed protein and other proteins derived from collagen, aloe vera gel, acetamide MEA and LMEA and mixtures thereof. The compositions according to the present invention may also include an opacifying or pearling agent. Such materials can be included in a level of from about 0.01% to about 5%, preferably from about 0.2% to about 1.3% by weight. A suitable opacifying agent for inclusion in the compositions of the present invention is a dispersion polyesterene, available from Morton International, under the trade name Lytron 621 and 631 (RTM). In addition, the opacifying agents / nacaradores suitable to be included in the compositions of the present invention include: titanium dioxide, TiO2; EUERLAN 810 (RTM); TEGO-PEARL (RTM); long chain acyl derivatives of (C15-C22). such as glycol or polyethylene glycol fatty acid esters, having from about 16 to about 22 carbon atoms and up to 7 ethyleneoxyl units; alkanolamides of fatty acids, having from about 16 to 22 carbon atoms, preferably from about 16 to 18 carbon atoms, such as stearic monoethanolamide, stearic diethanolamide, stearic monoisopropanolamide and monoethanolamide and alkyl dimethyl amine oxides of (C16-C22) ), such as stearyl dimethyl amine oxide. In preferred compositions, the opacifier / nacquer agent is present in the form of crystals. In the highly preferred compositions the opacifier / pearlizing agent is a particular dispersion polystyrene, having a particular measurement of from about 0.05 microns to about 0.45 microns, preferably from 0.17 microns to 0.3 microns, with said dispersions being preferred, from point of view to provide optimal rheology and slimming behavior per cut. The styrene copolymer PVP and Lyton 631 (RTM) are highly preferred. A number of additional optional materials can be added to the cleaning compositions, each at a level of from about 0.1%, to about 2% by weight. Such materials include proteins and polypeptides and derivatives thereof; water soluble or soluble preservatives, such as hydantoin DMDM, Germall 1 15, methyl, ethyl, propyl and butyl hydrobenzoic acid esters, EDTA, Euxyl K400 (RTM), natural preservatives, such as benzyl alcohol, potassium sorbate and bisabalol; sodium benzoate and 2-phenoxyethanol; other wetting agents, such as hyaluronic acid, citin, and elaborated starch sodium polyacrylates, such as Sanwet (RTM) IM-1000, IM-1500 and IM-2500 available from Celanese Superabsorbent Materials, Portsmith, VA, USA and described in United States Patent US-A-4,076,663; solvents; antibacterial agents, such as Oxeco (phenoxyisopropanol); low temperature phase modifiers, such as ammonium ion sources (for example NH4CI); viscosity control agents such as magnesium sulfate and other electrolytes; coloring agents; TiO2, and mica cover- TiO2; perfumes and perfume solubilizers; and zeolites, such as Valfour BV400 and derivatives thereof and Ca2 + / mg2 + sequestrants such as polycarboxylates, amino polycarboxylates, polyphosphonates, amino polyphosphonates, etc. The water is also present at a level preferably from 30% to about 94.99%, preferably from about 40% to about 90%, more preferably at least about 60% by weight, of the compositions herein invention. The pH of the compositions is preferably from about 4 to about 10, more preferably from about 6 to about 9, especially from about 5 to about 6. The invention is illustrated by the following non-limiting examples. In the examples, all concentrations are on an active 100% base, and the abbreviations have the following meanings: Amfoterico Cocoamfodiacetato Anionic 1 Sodium laureth-3 sulfate Anionic 2 Sarcosinate lauroyl sodium Non-ionic Shea Butter PEG-3 Crovol Crovol EP 70 (PEG 60 triglycerides of night primrose) GA Polyhydroxyl fatty acid amide of the formula IX in which RQ is C < n -C < | 7, Rg is methyl, and Z2 is CH2 (CHOH) CH2OH HMHEC Cetyl modified hydroxyethylcellulose, having a nonionic substitution of from about 0.4 to about 0.6 and an ethoxylation degree of from about 2.2 to about 2.8 - Polisurf 67 (RTM) ) Polymer 1 Polymer JR-30 (RTM) - Hydroxyethylcellulose reactivated with epichlorohydrin and quaternized with trimethylamine, weight m. Four . 10-3 Polymer 2 Gafquat 755N Preservative Phenoxyethanol / sodium benzoate / EDTA (4: 2: 1) Nacerator Etileneglycolistearate / emulsifier emulsifier Lytron 631 Opacifier (RTM) Oil Soybean Oil Soy Softigen 767 PEG (6) Caprylic / capric glycerides EXAMPLES I TO VI The following are personal cleansing compositions in the form of shower gel or foam bath products, which are representative of the present invention: 1 II l ll IV V VI Amfoteric 3.0 3.0 - 5.0 - 4.0 Anionic 1 6.0 3.0 13.0 10.0 6.0 4.0 Anionic 2 1.0 2.0 2.0 2.0 1.0 - GA 3.0 - - 3.0 3.0 - Oil - 4.0 - 6.0 4.0 - Softigen 767 - 1 .0 - 2.0 2.0 - Nonionic - 0.4 - 1 .0 - 0.3 Crovol - - 1.0 - - 3.0 HMHEC 0.3 0.4 0.5 0.1 0.3 0.35 Polymer 1 0.8 1 .0 - 0.2 0.8 - Polymer 2 - - 0.5 - - 0.2 Glycerin 1.0 3.0 1.0 2.0 1.5 5.0 Nacarador - - - 3.0 1.0 1 .0 Opacifier 0.2 0.3 0.4 - - - Conservative 0.5 0.5 0.5 1.0 1.0 1.0 Perfume 1.0 1.0 1.0 1.0 1.0 1.0 Zinc Stearate - - 0.8 - - 1.0 Water up to 100 • The compositions of the I to VI are first prepared by dispersion of water soluble polymer rheology or colloidal water-soluble polymer rheology, modified in water at a temperature of 25 ° C, either in a Tri-blender (RTM), or by Extended agitation prior to neutralization with NaOH or alternative base mix or hydration. In Examples II, IV and VI the mixture can be heated to approximately a temperature of 50 ° C, to improve the efficiency of the dispersion. The solubilizing agent is then added with further stirring. Surfactants and other skin care agents can then be added together with the remaining oil-insoluble, water-soluble ingredients. In the compositions comprising water insoluble ingredients, a phase B oil is formed, of those oil soluble ingredients which are then mixed with A at room temperature. The polymer dispersion is then added to the ambient temperature mixture and finally the remaining water, the preservative, the opacifying agent and the perfume are added. The products provide excellent benefits during use, including softness, skin conditioning, skin moistening, stability, rheology, application characteristics, cleaning, foam generation and easy rinsing.

Claims (10)

Claims 1. A composition for personal cleansing comprising: a) from about 5% to about 60%, by weight of water-soluble surfactant, selected from anionic, non-ionic, and amphoteric surfactants, and mixtures thereof; same; b) from about 0.01% to about 10%, by weight, of a hydrophobically modified nonionic cellulose ether, selected from alkyl and modified alkenyl Ci 4-C? , hydroxyethyl cellulose ethers, which have a degree of nonionic substitution in a range of from about 2.2, to about 2.8, and a degree of hydrophobic substitution in the range of from about 0.4% to about 6%, by weight; and c) water. and wherein the composition preferably exhibits a shear stress of about 150 Pa, at a cutoff index in a range from about 400s-1, to about 600s-1 at a temperature of 25 ° C. 2. A composition as described in claim 1, further characterized in that the hydrophobically modified cellulose ether is a cetyl hydroxy ethyl cellulose. 3. A composition as described in Claim 1, further characterized in that the composition has a viscosity (Brookfield RVT DCP, 1 rpm with Cone CP41 or CP52, 25 ° C, undiluted), in a range of from 1, 000 up to 50,000 cps. 4. A composition as described in claim 1, further characterized in that it comprises a mixture of anionic surfactants with zwitterionic and / or amphoteric surfactants, and wherein the level of the individual anionic, zwitterionic and amphoteric surfactant components is the range from about 1% to 15% by weight. 5. A composition as described in Claim 1, further characterized in that it comprises from about 0.1% to about 20% by weight of a nonionic surfactant selected from ethoxylated oils or fats having the formula [V] RCOCH2 CH (OH) CH2 (OCH2 CH2) nOH wherein n is from about 5 to 200, and wherein R comprises an aliphatic radical having an average of about 5 to 20 carbon atoms. 6. A composition as described in Claim 4, further characterized in that the anionic surfactant is selected from the group consisting of ethoxylated alkyl sulphates, alkyl glyceryl ether sulfonates, methyl acryl taurates, fatty acyl glycinates, carboxylates of ethoxy alkyl, N-acyl glutamates, acyl isethionates, alkyl sulfosuccinates, alpha sulfonated fatty acids, their salts and / or esters, alkyl phosphate esters, ethoxylated alkyl phosphate esters, acyl sarcosinates and fatty acid / protein condensates , and mixtures thereof. 7. A composition as described in Claim 6, further characterized in that it comprises an alkyl ethoxylated sulfate of Cg-C22- 8. A composition as described in Claim 4, further characterized in that the amphoteric surfactant is selected from the group consisting of: a) imidazolinium surfactants of the formula (I) where R- | , is C7-C22 alkyl or alkenyl. R2 is hydrogen or CH2Z, each Z is independently CO2, or CH2CO2M, and M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium; and / or ammonium derivatives of formula (II) R2 wherein R-j, R2 and Z are as defined above; b) aminoalkanoates of formula (11) Rl NH (CH2) nCO2M iminodialkanoates of formula (IV) R1 N [(CH2) mc ° 2M] 2 and iminopolyalkanoates of formula (V) l [N (CH2) p] q - N [CH2C02M] 2 I 1 CH C0 M where n, m, p, and q are quantities from 1 to 4, and R- | and M are selected independently of the groups specified above; and c) mixtures thereof. 9. A composition as described in Claim 8, further characterized in that the amphoteric surfactant is selected from the group consisting of imidazolinium derivatives of formula I, ammonium derivatives of formula II, and mixtures thereof. 10. A composition as described in claims 1 to 9, further characterized in that the weight ratio of the anionic surfactant: zwitterionic and / or amphoteric surfactant is in a range of from about 1: 2 to about 6: 1.

1. A composition as described in Claim 10, further characterized in that the anionic, zwitterionic and amphoteric surfactants together comprise from about 8% to about 35% by weight of the composition. A composition as described in Claim 1, further characterized in that it additionally comprises a soluble polyol having a molecular weight of from about 40 to about 200, and from about 2 to about 6 hydroxyl groups. A composition as described in Claim 12, further characterized in that the polyol is selected from the group consisting of glycerin, propylene glycol, polyethylene glycol, polypropylene glycol, sorbitol and mixtures thereof. A composition as described in Claim 1, further characterized in that it additionally comprises a polymeric skin conditioning agent, having an average molecular mass in the range of from about 2000 to about 5,000,000. 15. A composition as described in Claim 14, further characterized in that the polymeric skin conditioning agent is selected from the group consisting of cationic polysaccharides, cationic and non-ionic homopolymers and copolymers derived from acrylic and / or methacrylic acid, cationic and nonionic cellulose resins; cationic copolymers of dimethyldiallylammonium chloride and acrylic acid; cationic homopolymers of dimethyldiallylammonium chloride; cationic polyalkylene and ethoxypolyalkylene imines; quaternized silicones, and mixtures thereof. 16. A composition as described in Claim 1, further characterized in that it additionally comprises from about 0.1% to about 20% by weight of an auxiliary non-ionic surfactant selected from the group consisting of mono and fatty acid diethanolamides. of C 12-C14 and polyhydroxyl amide fatty acid surfactants. 17. A composition as described in Claim 16, further characterized in that it additionally comprises up to about 20% by weight of perfume or cosmetic oil. 18. A composition as described in Claim 1, further characterized in that it additionally comprises a humectant selected from the group consisting of sodium carboxylic acid pyrrolidone, L-proline and mixtures thereof. EXTRACT OF THE INVENTION A personal cleansing composition which comprises: (a) from about 5% to about 60% by weight of a water-soluble surfactant selected from anionic, nonionic and amphoteric surfactants and mixtures thereof; and (b) from about 0.01% to about 10% by weight of a hydrophobically modified nonionic cellulose ether selected from the hydroxyethyl cellulose ethers modified with C 14 -C 8 alkyl and alkenyl having a degree of substitution non-ionic in the range of from about 2.

2. to about 2.8 and a degree of hydrophobic substitution in the range of from about 0.4% to about 0.6% by weight; and (c) water; and wherein the composition exhibits a cutting force of about 150Pa in a cutting amount in the range of from about 400s'1 to about 600s'1 at a temperature of 25 ° C. The products demonstrate excellent efficacy benefits during use They include softness, a moisturizing sensation on the skin, good rinsing ability and good product stability.