CN1177289A - Cleaning compositions - Google Patents

Abstract

A liquid personal cleansing composition comprising: (a) from about 5% to about 60% by weight of a surfactant selected from the group consisting of anionic, nonionic, zwitterionic and amphoteric surfactants and mixtures thereof; (b) From about 0.1% to about 5% (wt) of a water-insoluble salt of a _C14 - _C22 fatty acid; (c) optionally from about 0.01% to about 5% (wt) of a cationic or nonionic polymeric skin conditioning agent; and ( d) water. This product exhibits superior in-use benefits including mildness, soap-like skin feel and good product stability.

Description

cleaning composition

The present invention relates to cleaning compositions. In particular it relates to mild personal cleansing compositions having good skin feel properties and foam properties, suitable for simultaneously cleansing and conditioning the skin and/or hair, which can be used in a variety of forms, e.g. foam bath preparations, shower preparations, skin Cleansers, hand, face and body washes, shampoos and more.

Mild cosmetic compositions need to meet a number of criteria including cleansing power, lather and mild/low irritation/feel good on skin, hair and eye mucus. The skin is made up of several layers of cells that coat and protect the keratin and collagen fibrils that make up the skeleton of the skin structure. The outermost of these layers, called the stratum corneum, is known to consist of 250 Angstrom protein bundles surrounded by 80 Angstrom thick layers. Hair has a similar outermost protective covering that encloses the hair fiber, called the cuticle. Anionic surfactants penetrate the stratum corneum membrane and epidermis and disrupt membrane integrity by degreasing. This action on the skin and hair protective film can lead to rough skin and eye irritation and may eventually allow the surfactant to interact with keratin and hair proteins causing irritation, barrier loss and loss of moisture retention.

An ideal makeup remover should be gentle on the skin or hair, without degreasing and/or drying the hair and skin with regular use, and without irritating eye mucus or tightening the skin. Many lathering soaps, shower and bath products, shampoos and bars fall short in this regard.

Certain synthetic surfactants are known to be mild. However, a major drawback of the mildest synthetic surfactants is their poor lathering properties when used to prepare shampoos or personal washes compared to the highest shampoo and soap bar standards. Thus those surfactants that are among the mildest, such as sodium lauryl glyceryl ether sulfonate, (AGS), are inferior in lathering. On the other hand, the use of known high lathering anionic surfactants and lather boosters results in acceptable lather quality and volume at the expense of skin softness. These two factors make the choice of surfactant, formulation method for foaming and mildness a delicate balance.

Despite years of research by the cosmetic industry on personal cleansing products, consumers at large are still dissatisfied with the skin feel, mildness and rinse characteristics of today's synthetic-based cleansing compositions. Many consumers appreciate the feel and rinse properties of soaps. However, such soap-based products do not achieve the mildness associated with mild synthetic surfactants. Additionally, many cationic and nonionic polymers incorporated into personal cleansing composition products have been found to be detrimental to skin feel, providing a "creamy" feel to the skin rather than a soapy feel.

There is therefore a need for a personal cleansing product which will provide a soap-like in-use skin feel without dehydrating the skin or causing a loss of skin elasticity, which will provide a skin conditioning property in a rinse-off product, such Performance that used to be only achievable with the additional use of a cosmetic moisturizer after cleansing, and this product will produce a stable and high-quality lather, it is an efficient hair and skin cleanser, it has good rinsability characteristics, and at the same time it Has stable product and viscosity characteristics and remains completely stable over long periods of time and under severe storage temperatures.

It has now been found that the incorporation of water-insoluble salts of certain fatty acids provides a personal cleansing composition which has improved (soap-like) skin feel and moisturizing properties and good product stability during and after use.

The subject of the present invention is a mild, foaming cleansing product suitable for personal cleansing of hair and skin, and which can be used as foam bath and shower products, skin cleansers and shampoos and the like. According to one aspect of the present invention, there is provided a liquid personal cleansing composition comprising:

(a) from about 5% to about 60% by weight (wt) of a surfactant selected from the group consisting of anionic, nonionic, zwitterionic and amphoteric surfactants and mixtures thereof;

(b) from about 0.1% to about 5% by weight of water-insoluble salts of _C14 - _C22 fatty acids;

(c) from about 0.01% to about 5% by weight of a cationic or nonionic polymeric skin conditioning agent; and

(d) water.

In a highly preferred embodiment, the present invention takes the form of a liquid cleansing composition that produces a foam having excellent skin feel and rinse properties, improved perceptible dryness and defined tightness and expert graded dryness Feel, and at the same time have superior foaming, stabilizing characteristics, cleansing power and conditioning performance.

All concentrations and ratios are by weight of the cleaning composition unless otherwise indicated. Surfactant chain lengths are also based on weight average chain length unless otherwise specified.

The liquid cleansing compositions herein are based on mild surfactants in combination with water-insoluble metal salts of certain fatty acids. Preferred embodiments also contain polymeric skin conditioners and/or fragrance or cosmetic oils.

Water-insoluble salts of fatty acids suitable for use herein include zinc, magnesium, calcium, lithium and aluminum salts of _C14 - _C22 , preferably _C16 - _C18 fatty acids, and mixtures thereof. Particularly preferred from the standpoint of optimum skin feel and conditioning performance are zinc salts, especially of _C16 - _C18 fatty acids, sold as zinc stearate. The combination of water insoluble fatty acid salts with cationic or nonionic polymeric skin care agents is particularly beneficial in providing the improved skin care and skin feel characteristics typical of soap based cleansing products. Based on the weight of the composition, the total content of fatty acid metal salt is about 0.1%-5%, preferably 0.2%-3%, more preferably 0.5%-2%.

Compositions according to the present invention also comprise, in a preferred embodiment, a cationic or nonionic polymer for skin conditioning. The polymeric skin care agent is present in an amount of about 0.01% to 5%, preferably 0.05% to 3%, particularly preferably 0.1% to 2% (wt).

Suitable polymers are high molecular weight materials (weight average molecular weight 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 1,000,000 as measured by, for example, light scattering).

Representative classes of polymers include cationic or nonionic polysaccharides; cationic or nonionic homopolymers and copolymers derived from acrylic acid and/or methacrylic acid; cationic or nonionic cellulosic resins; dimethyldiallyl chloride cationic copolymers of ammonium chloride and acrylamide and/or acrylic acid; cationic homopolymers of dimethyldiallylammonium chloride; cationic polyolefins and ethoxylated polyalkyleneimines; quaternized silicones and their mixture.

Cationic polymers suitable for use herein include, for example, cationic guar gums such as hydroxypropyltrimethylammonium guar gum (degree of substitution (d.s) from 0.11 to 0.22) sold under the tradename Jaguar C-14- S (RTM), Jaguar C-17 (RTM) and Jaguar C-16 (RTM) are sold in the market. In addition to the above-mentioned cationic groups, they also contain hydroxypropyl substituents (substitution degree d.s0.8～1.1 ), and quaternized cellulose ethers sold under the trade names Ucare Polymer JR-30M, JR-400, and Celquat. Other suitable cationic polymers are the homopolymer of dimethyldiallyl ammonium chloride sold under the trade name Merquat 100, the copolymer of dimethyl aminoethyl methacrylate and acrylamide, dimethyl diene Copolymers of propylammonium chloride and acrylamide, sold under the trade names Merquat 550 and Merquat S; acrylic acid/dimethyldiallyl ammonium chloride/acrylamide copolymer sold under the trade name Merquat 3300, sold under the trade name Gafquat Copolymers of quaternized vinylpyrrolidone acrylates or methacrylates of aminoalcohols, such as Polyquaternium 11, 23 and 28 (quaternized copolymers of vinylpyrrolidone and aminoethyl dimethyl methacrylate - Gafquat 755N and HS-100), copolymers of vinylpyrrolidone/vinylimidazolium methochloride sold under the trade names Luviquat HM552, Polyquaternium2, and polyalkyleneimines such as polyethyleneimine and ethoxylated polyethyleneimine . Very preferred from the standpoint of providing a "tight" soap-like feel are quaternized vinylpyrrolidone acrylate and methacrylate copolymers. In a preferred embodiment, the weight ratio of water insoluble metal salt to polymeric skin care agent ranges from about 50:1 to 1:10.

Mild surfactants suitable for incorporation into the compositions of the present invention are selected from anionic, nonionic, amphoteric and zwitterionic surfactants and mixtures thereof. The total surfactant content is preferably from about 5% to about 60% (wt), more preferably from about 8% to about 40%, and especially preferably from about 10% to about 35%. The compositions preferably contain a mixture of anionic and zwitterionic and/or amphoteric surfactants. The individual anionic, zwitterionic and amphoteric surfactant components, if present, range from about 1% to about 15%, especially from about 2% to about 13%, by weight of the composition, and the level of nonionic surfactant, If present, it is from about 0.1% to about 20%, preferably from 2% to about 16%, more preferably from about 3% to about 12% (wt). The total content of anionic, amphoteric and zwitterionic surfactant components is preferably from about 5% to about 50% by weight of the composition, more preferably from about 8% to about 35%, especially preferably from about 10% to about 30% ( wt). The anionic surfactant:zwitterionic and/or amphoteric surfactant ratio ranges from about 1:2 to about 6:1. Other suitable compositions within the scope of the present invention comprise anionic, zwitterionic and/or amphoteric surfactants in admixture with one or more nonionic surfactants. Preferably used are soluble or dispersible nonionic surfactants selected from ethoxylated animal and vegetable oils and fats and mixtures thereof, also sometimes referred to as "oil derived" nonionic surfactants.

Anionic surfactants suitable for incorporation into the compositions of the present invention may generally be referred to as mild synthetic detersive surfactants and include ethoxylated alkyl sulfates, alkyl glyceryl ether sulfonates, methylacyl taurine Salts, fatty acyl glycinates, N-acyl glutamates, acyl isethionates, alkyl sulfosuccinates, alpha-sulfonated fatty acids, their salts and/or esters, alkyl ethoxylates Alkyl carboxylates, alkyl phosphates, ethoxylated alkyl phosphates, acyl sarcosinates and fatty acid/protein condensates and mixtures thereof. The alkyl and/or acyl chain lengths of these surfactants are C ₈ -C ₂₂ , preferably C ₁₀ -C ₁₈ , more preferably C ₁₂ -C ₁₄ .

From the standpoint of optimum mildness and foaming characteristics, preferably suitable for use in the present invention are salts of sulfate esters of reaction products of 1 mole of higher aliphatic alcohols and about 1 to about 12 moles of ethylene oxide, which in contrast The ions are preferably sodium and magnesium. Particularly preferred are alkyl sulfates containing about 2 to 6, preferably 2 to 4 moles of ethylene oxide, such as sodium laureth-2 sulfate, laureth-2 Sodium Vinyl Ether 3 (Laureth-3) Sulfate and Sodium Laureth 3.6 (Laureth-3.6) Magnesium Sulfate. In a preferred embodiment, the anionic surfactant contains at least 50%, especially at least about 75%, by weight, of ethoxylated alkyl sulfate.

Compositions of the present invention also suitably contain an amphoteric surfactant. Amphoteric surfactants suitable for use in the compositions of the present invention include:

(a) imidazolinium surfactants of formula (I):

wherein R ₁ is C ₇ -C ₂₂ alkyl or alkenyl, R ₂ is hydrogen or CH ₂ Z, each Z is CO ₂ M or CH ₂ CO ₂ M, and M is H, alkali metal, alkaline earth metal , ammonium or alkanolammonium; and/or ammonium derivatives of formula (II): Wherein R ₁ , R ₂ and Z are as defined above (b) aminoalkanoate of formula (III):

R ₁ NH(CH ₂ ) _n CO ₂ M iminodialkanoate of formula (IV):

R ₁ N[(CH ₂ ) _m COX ₂ M] ₂ and imino polyalkanoates of formula (V):

Wherein n, m, p and q are numbers from 1 to 4, and R _and M are independently selected from the groups defined above; and

(c) mixtures thereof.

Suitable amphoteric surfactants of type (a) are marketed under the tradenames Miranol and Empigen and are believed to comprise complex mixtures of individual species. Miranol is traditionally considered to have the structure of formula I, although the 3rd edition of the CTFA Cosmetic Ingredient Dictionary shows that it is an acyclic formula II structure, while the 4th edition points out another structural isomer (wherein, R ₂ is the same as O concatenated rather than N concatenated). In practice, complex mixtures of cyclic and acyclic species are possible, and for completeness, two definitions are given here. Nevertheless, preferred for use in the present invention are acyclic species.

Examples of suitable amphoteric surfactants of type (a) include compounds of formula I and/or II wherein R _is C ₈ H ₁₇ (especially isooctyl), C ₉ H ₁₉ and C ₁₁ H ₂₃ alkyl. Particularly preferred are compounds wherein R ₁ is C ₉ H ₁₉ , Z is CO ₂ M and R ₂ is H; wherein R ₁ is C ₁₁ H ₂₃ , Z is CO ₂ M and R ₂ is CH ₂ CO ₂ M and wherein R ₁ is C ₁₁ H ₂₃ , Z is CO ₂ M and R ₂ is H.

In CTFA nomenclature, materials suitable for use in the present invention include cocoamphopropionate, cocoamphopropionate, and especially cocoamphoacetate and cocoamphodiacetate (also known as cocoamphocarboxyglycine). ester). Specific commercially available products include those sold under the following trade names: Ampholak 7TX (sodium carboxymethyl tallow polypropylamine), Empigen CDL60 and CDR60 (Albright & Wilson), Miranol H2M Conc. Miranol C2M Conc. N.P, Miranol C2M Cone. O.P, Miranol C2M SF, Miranol CM Special (Rhone-Poulenc); Alkateric 2CIB (Alkaril Chemicals); Amphoterge W-2 (Lonza, Inc.); Monateric CDX-38, Monateric CSH-32 (Mona Industries); Group); and Schercotic MS-2 (Scher Chemicals).

It should be understood that some commercially available amphoteric surfactants of this type are manufactured and sold as electrically neutral complexes having, for example, hydroxide counterions or anionic sulfate or sulfonate esters. Surfactants, especially those of the sulfated C ₈ -C ₁₈ alcohol, C ₈ -C ₁₈ ethoxylated alcohol or C ₈ -C ₁₈ acylglyceride type. From a mildness and product stability standpoint, however, preferred compositions are substantially free of (non-ethoxylated) sulfated alcohol surfactants. It should also be noted that the concentrations and weight ratios of the amphoteric surfactants herein are based on the uncomplexed form of the surfactants, and the counterions of any anionic surfactants are considered to be part of the total anionic surfactant component content.

Examples of suitable amphoteric surfactants of type (b) include N-alkyl polytrimethylene polycarboxymethylamines, such materials are sold by Berol Nobel under the trade names Anpholak X07 and Ampholak 7CX; salts, especially Triethanolammonium salt as well as N-lauryl-β-alanine and N-lauryl-imino-dipropionate. Such substances are sold under the trade names Deriphat by Henkel and Mirataine by Rhone Poulenc.

The compositions of the present invention may also contain zwitterionic surfactants, especially alkyl betaine or amido betaine surfactants, in an amount of about 0.1% to 20%, preferably about 0.1% to 10%, particularly preferably about 1%. to 8%.

Betaine surfactants suitable for incorporation into the compositions of the present invention include alkyl betaines of formula R ₅ R ₆ R ₇ N ⁺ (CH ₂ ) _n CO ₂ M (VIII) and amido betaines of formula (IX):

Wherein, R ₅ is C ₁₂ -C ₂₂ alkyl or alkenyl, R ₆ and R ₇ are independently C ₁ -C ₃ alkyl, M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium, And n, m are any number from 1 to 4. Preferred betaines include cocamidopropyl dimethyl carboxymethyl betaine, lauryl amidopropyl dimethyl carboxymethyl betaine and Tego betaine.

The compositions of the present invention also preferably contain oil-derived nonionic surfactants or mixtures thereof at a level by weight of from about 0.1% to 20%, more preferably from about 1% to 15%, especially preferably from about 2% to 10%. Oil-derived nonionic surfactants can provide in-use and after-use skin feel benefits of the compositions of the present invention. Suitable oil-derived nonionic surfactants include emollients of water-soluble vegetable and animal origin, such as triglycerides embedded with polyethylene glycol chains; ethoxylated mono- and diglycerides, polyethoxylated oxylated lanolin and ethoxylated tallow derivatives. A preferred class of oil-derived nonionic surfactants has the general formula (VI): 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 group having an average of about 5 to about 20 carbon atoms, preferably about 9 to about 18 carbon atoms.

Suitable such ethoxylated oils and fats include polyethylene glycol derivatives of: glyceryl cocoate, glyceryl caproate, glyceryl caprylate, glyceryl tallow, glyceryl palmitate, glyceryl stearin glyceryl laurate, glyceryl oleate, glyceryl ricinoleate and fatty acid esters of glycerol derived from triglycerides such as palm oil, almond oil and corn oil, preferably glyceryl tallow and glyceryl coco .

Suitable oil-derived nonionic surfactants of this type are available from Croda Inc. (New York, USA) under their Crovol series of materials, for example, Crovol EP40 (PEG20 evening primrose glycerides), Crovol EP70 (PEG60 evening primrose Evening Primrose Glycerides), Crovol A-40 (PEG20 Almond Glycerides), Crovol A-70 (PEG60 Almond Glycerides), Crovol M-40 (PEG20 Corn Glycerides), Crovol M-70 (PEG60 Corn Glycerides ), Crovol PK-40 (PEG12 Palm Kernel Glycerides), and Crovol PK-70 (PEG45 Palm Kernel Glycerides), as well as Solan series substances, such as Solan E, E50 and X polyethoxylated lanolin and Aqualose L-20 (PEG 24 lanolin alcohol) and Aqualose W15 (PEG 15 lanolin alcohol) available from Westbrook Lanolin. Other suitable surfactants of this type are available from Sherex Chemical Co. (Dublin, Ohio, USA) as the Varonic LI series of surfactants. These include, for example, Varonic LI48 (polyethylene glycol (n=80) glyceryl tallow, otherwise known as PEG80 glyceryl tallow), Varonic LI2 (PEG28 glyceryl tallow); Varonic LI420 (PEG200 glyceryl tallow ), and Varonic LI63 and 67 (PEG30 and PEG80 cocoglycerides). Other suitable oil-derived emollients are polyethylene glycol derivatives of corn oil, avocado oil and babassu oil, and Softigen 767 (PEG(6) caprylic/capric glycerides).

Nonionic surfactants suitable for use here are also substances derived from complex vegetable fats extracted from the fruit of the shea tree ( Butyrospermum Karkii Kotschy ) or derivatives thereof. This vegetable fat, called shea butter, is widely used in Central Africa, for example in making soaps and skin creams, and is marketed by Sederma (78610 Le Perray En Yvelines, France). Particularly suitable are ethoxylated derivatives of shea butter, marketed by Karlshamn Chemical Co. (Columbos, Ohio, USA) in the Lipex line of chemicals, such as Lipex 102 E-75 (ethoxylated shea butter mono- or diglycerides). Similarly, ethoxylated derivatives of mango butter, cocoa butter and Illipe butter may also be used in the compositions of the present invention. Although these are classified as ethoxylated nonionic surfactants, it should be understood that there is still a certain percentage of vegetable oils or fats which remain non-ethoxylated.

Other suitable oil-derived nonionic surfactants include ethoxylated derivatives of the following oils: almond oil, peanut oil, rice bran oil, wheat germ oil, linseed oil, jojoba oil, almond oil, walnut oil , Palm Fruit, Pistachio, Sesame Seed, Rapeseed, Juniper Oil, Corn Oil, Peach Kernel Oil, Poppy Seed Oil, Pine Nut Oil, Castor Oil, Soybean Oil, Avocado Oil, Safflower Oil, Coconut Oil , hazelnut, olive, grapeseed and sunflower oils.

From the standpoint of optimum mildness and skin feel characteristics, highly preferred oil-derived nonionic surfactants for use herein are PEG 60 evening primrose triglyceride; PEG 55 lanolin polyethoxylated derivative; and ethoxylated derivatives of shea butter.

In addition to the aforementioned oil-derived nonionic surfactants, the compositions of the present invention also contain co-nonionic surfactants at levels of from about 0.1% to about 20% (wt), more preferably from about 0.1% to about 10%, especially From about 1% to about 8% is preferred. Such surfactants include C ₁₂ -C ₁₄ fatty acid mono- and di-ethanolamides, sucrose polyester surfactants and polyhydroxy fatty acid amide surfactants of general formula (VII):

Preferred polyhydroxy fatty acid amide surfactants are those wherein _R9 is _C1 - _C4 alkyl, preferably methyl, and _R8 is _C7 - _C19 alkyl or alkenyl, more preferably straight chain _C9 -C ₁₇ alkyl or alkenyl, or a mixture thereof; Z ₂ is a polyhydroxyl hydrocarbon group having a linear hydrocarbon chain to which at least three hydroxyl groups are directly attached, or an alkoxylation thereof (preferably ethyl Oxylated or propoxylated) derivatives. _Z2 is preferably derived from a reducing sugar in a reductive amination reaction, more preferably _Z2 is a glycityl. Suitable reducing sugars include glucose, fructose, maltose, lactose, galactose, mannose and xylose. As raw materials, high dextrose corn syrup, high fructose corn syrup, and high maltose corn syrup can be utilized as well as the various sugars listed above. These corn syrups can be produced as a blended sugar ingredient for the Z ₂ . It should be understood that other suitable starting materials are not excluded. Z ₂ is preferably selected from -CH ₂ (CHOH) _n -CH ₂ OH, -CH(CH ₂ OH)-(CHOH) _n-1 -CH ₂ OH, -CH ₂ -(CHOH) ₂ (CHOR')( CHOH) _-CH2OH , wherein n is an integer of 3-5 (inclusive), and R' is hydrogen or a cyclic or aliphatic monosaccharide, and alkoxylated derivatives thereof. Most preferred are glycityls wherein n is 4, especially _-CH2 (CHOH) ₄ - _CH2OH .

Most preferably the polyhydroxy fatty acid amides have the structure of formula R ₈ (CO)N(CH ₃ )CH ₂ (CHOH) ₄ CH ₂ OH, wherein R ₈ is C ₁₁ -C ₁₇ straight chain alkyl or alkenyl.

The compositions of the present invention may also contain saturated acyl fatty acids having a weight average chain length of 10 to 18, preferably 12 to 16 carbon atoms, at about 0.1% to 8% by weight, preferably at about 0.5% to 6%, and particularly preferably About 1.5% to 5%. Myristic acid is preferred

The compositions of the present invention may additionally contain insoluble perfume or cosmetic oils or waxes, or mixtures thereof, in an amount of up to 10% by weight, preferably up to about 3%, wherein the oil or wax is insoluble at 25° C. Insoluble in product matrix. The incorporation of these oils or waxes can provide emolliency, mildness and rinseability characteristics to the personal cleansing compositions of the present invention. However, it is a feature of the present invention that compositions with superior emolliency and mildness and desirable physical properties (clarity, etc.) can be provided, while these compositions are substantially oil-free, i.e., the weight of the oily phase employed is less than 1 %, preferably less than 0.5%. Compositions of this type are preferably physically in the form of light clear solutions or microemulsions. In compositions containing added perfume or cosmetic oils or waxes, the weight ratio of oil derived nonionic surfactant to oil added is preferably at least about 1:2, preferably at least about 3:1.

Insoluble cosmetic oils and waxes suitable for use in the present invention may be selected from water insoluble silicones, including nonvolatile polyalkyl and polyaryl silicone gums and liquids, volatile cyclic and linear polyalkylsiloxanes alkanes, polyalkoxylated siloxanes, amino- and quaternary ammonium-modified siloxanes, rigidly cross-linked and reinforced siloxanes and mixtures thereof, C ₈ -C ₃₀ fatty acids C ₁ -C ₂₄ Esters such as isopropyl myristate, myristyl myristate and cetyl ricinoleate, C ₈ -C ₃₀ esters of benzoic acid, beeswax, saturated and unsaturated fatty alcohols such as behenyl alcohol , hydrocarbons such as mineral oil, petrolatum squalane and squalene, polybutene, fatty sorbitan esters (see US-A-3988255, Seiden, issued October 26, 1976), lanolin and oils Lanolin derivatives, animal and vegetable triglycerides such as almond oil, peanut oil, wheat germ oil, rice bran oil, linseed oil, jojoba oil, almond oil, walnut, palm nut, pistachio, sesame seed, Canola, juniper oil, corn oil, peach pit oil, poppy seed oil, pine nut oil, castor oil, soybean oil, avocado oil, safflower oil, coconut oil, hazelnut oil, olive oil, grapeseed oil, and sunflower oil Seed oils and C ₁ -C ₂₄ esters of dimerized and trimerized acids, such as diisopropyl dimerate, diisostearyl malate, diisostearyl diester and triisostearyl triester polyester.

The viscosity of the final composition (Brookfield RVT DCP, 1 rpm, cone CP41 or CP52, 25°C, neat) is preferably at least about 500 centipoise, more preferably about 1,000 to about 50,000 centipoise, particularly preferably about 5,000 to about 30,000 centipoise, Viscosity is controlled using conventional hydrophilic gelling agents and thickeners.

The compositions of the present invention may therefore also contain a hydrophilic gelling agent, preferably in an amount of about 0.01% to 10%, more preferably in the range of about 0.02% to 2%, especially preferably in the range of about 0.02% to 0.5%. The gelling agent preferably has a viscosity (1% aqueous solution, 20°C, Brookfield RVT) preferably at least about 4000 mPa.s, more preferably at least about 10,000 mPas, especially preferably at least about 50,000 mPa.s.

Suitable hydrophilic gelling agents are generally water-soluble or colloidal water-soluble polymers, including cellulose ethers (such as hydroxyethylcellulose, methylcellulose, hydroxypropylmethylcellulose), polyethylene Pyrrolidone, polyvinyl alcohol, guar gum, hydroxypropyl guar gum and xanthan gum.

Preferred hydrophilic gelling agents are acrylic acid/ethyl acrylate copolymers and carboxyvinyl polymers sold under the tradename Carbopol resins by the B.F. Goodrich Company. These resins are essentially colloidal water-soluble polyalkenyl polyether crosslinked polymers of acrylic acid crosslinked with 0.75% to 2.00% of a crosslinking agent such as polyallyl sucrose or polyallyl pentaerythritol. Examples include Carbopol 934, Carbopol 940, Carbopol 950, Carbopol 980, Carbopol 951 and Carbopol 981. Carbopol 934 is a polymer of water soluble acrylic acid crosslinked with about 1% of sucrose polyallyl ether having an average of about 5.8 allyl groups per sucrose molecule. The most preferred polymer is Carbopol 951. Also suitable for use in the present invention are amphiphilic hydrophobically modified cross-linked acrylic polymers, commercially available as Carbopol 1382, CarbopoL 1342 and Pemulen TR-1 (CTFA designation; Acrylates/10-30 Acrylic Alkyl ester crosspolymer). Polyalkenyl polyether crosslinked acrylic polymers in combination with hydrophobically modified crosslinked acrylic polymers are also suitable for use in the present invention. The hydrophilic gelling agents herein are particularly beneficial in providing superior stability characteristics at normal or elevated temperatures.

Neutralizing agents suitable herein for neutralizing the acid groups of the hydrophilic gelling agent include sodium hydroxide, potassium hydroxide, ammonium hydroxide, monoethanolamine, diethanolamine, and triethanolamine.

The cleansing compositions of the present invention may also optionally contain other skin or hair moisturizing agents dissolved in the cleansing composition matrix, preferably at a level of from about 0.5% to about 20% by weight. In a preferred embodiment, the moisturizing agent is selected from:

1. Water-soluble liquid polyol.

2. Naturally occurring essential amino acids found in the stratum corneum of the skin.

3. Water-soluble non-polyol nonocclusives and mixtures thereof.

Some examples of more preferred non-occluded moisturizers are: polybutene, squalane, glycerin, polyethylene glycol, propylene glycol, sorbitol, polyethylene glycol and polypropylene glycol esters of methylglucose (e.g. ethyl glucam E-20 and prpylglucan P-10), polyethylene glycol and propylene glycol esters of lanolin alcohol (such as Solulan-75), sodium pyrrolidone carboxylate, lactic acid, L-proline, guanidine, pyrrolidone, hydrolyzed proteins and other collagens Derivatized protein, aloe vera gel and acetamide MEA and mixtures thereof. Among them, glycerin is very preferable.

Certain other optional materials can be incorporated into the present cleaning compositions at levels of from about 0.1% to about 2% by weight of each material. These substances include proteins and peptides and their derivatives; water-soluble and solubilizable preservatives such as DMDM Hydantoin, Germall 115, A, B, C and Butyl Hydroxybenzoic Acid Esters, EDTA, Euxyl (RTM) K400, Natural Preservatives agents such as benzyl alcohol, potassium sorbate and bisabolol; sodium benzoate and 2-phenoxyethanol; other moisturizing agents such as hyaluronic acid, chitin and starch-grafted sodium polyacrylate such as Sanwet (RTM) IM- 1000, IM-1500 and IM-2500 (marketed by Celanese Superabsorbent Materials, Portsmith, VA, U.S., and disclosed in US-A-4,076,663); solvents such as hexanediol and propylene glycol; antibacterial agents such as Oxeco (phenoxyisopropyl alcohols); low-temperature phase regulators such as ammonium ion sources (such as NH ₄ Cl); viscosity control agents such as magnesium sulfate and other electrolytes; colorants; TiO ₂ and TiO _2- coated mica; fragrances and fragrance co-solvents; and zeolites such as Valfour BV400 and its derivatives, Ca ²⁺ /Mg ²⁺ chelating agents such as polycarboxylates, amino polycarboxylates, polyphosphonates, amino polyphosphonates, etc. Water is also present at a level of from about 45% to about 94%, more preferably at least about 60%, by weight of the compositions of the present invention.

The pH of the present compositions is preferably from about 4 to about 10, more preferably from about 6 to about 9.

The invention is illustrated by the following non-limiting examples.

In the examples, all concentrations are based on 100% activity and abbreviations have the following definitions:

Amphoteric Cocoamphodiacetate

Anion 1 Sodium lauryl polyoxyethylene ether-3-sulfate

Anion 2 Sodium Lauroyl Sarcosinate

Solan Solan(RTM)E(PEG55 Lanolin)

Crovol Crovol EP70 (PEG60 Evening Primrose Triglyceride)

GA polyhydroxy fatty acid amides of formula VII, wherein R ₈ is C ₁₁ -C ₁₇ alkane

radical, R ₉ is methyl, and Z ₂ is CH ₂ (CHOH) ₄ CH ₂ OH

Betaine Cocoamidopropyl Betaine

Polymer 1 Polymer JR-400-Hydroxyethylcellulose reacts with epichlorohydrin

And quaternized with trimethylamine. Weight field molecular weight, m.wt.4×10 ⁶

Polymer 2 Gafquat 755N

Preservatives Phenoxyethanol/Sodium Benzoate/EDTA (4:2:1)

Pearlizing agent Ethylene glycol distearate/emulsifier blend

Oil Soybean Oil

Softigen 767 PEG(6) Capric/Caprylic Glycerides Examples 1 to 6

The following personal cleansing compositions in the form of shower gel or bath foam products are representative of the present invention:

II III IV VI sex 3.0 3.0-5.0-4.0 Pine ions 1 6.0 6.0 13.0 6.0 4.0 P ansemous 2 1.0 2.0 2.0 1.0-Ga 3.0-3.0 3.0 beet-3.0-oil-4.0 4.0 6.0 4.0 4.0 -Softigen767 - 3.0 - 2.0 2.0 -Solan - 3.0 - 1.0 - 2.0

Crovol - - 1.0 - - - 3.0

Polymer 1 0.8 1.0 - 1.0 1.0 -

Polymer 2 - - 0.5 - - 0.2

Pearlescent agent 1.0 1.0 3.0 3.0 1.0 1.0

Preservatives 1.0 1 0 1.0 1.0 1.0 1.0

Spice 1.0 1.0 1.0 1.0 1.0 1.0

Glycerin 3.0 3.0 - 3.0 - -

Carbomer 0.2 0.3 0.4 0.3 0.5 0.2

1342 zinc stearate 0.8 0.5 0.8 4.0 2.5 1.0

Water --- to 100 ---

Compositions I-VI were prepared at 65 degrees Celsius by forming a surfactant phase A containing part of the water, anionic, amphoteric, and oil-derived nonionic surfactants and the remaining water-soluble, oil-insoluble ingredients. In compositions containing water insoluble ingredients, oil phase B was formed from these oil soluble ingredients and then premixed with A at 65°C and cooled to ambient temperature. Finally add the remaining water, preservatives and spices.

The product provides superior in-use and efficacy benefits including mildness, soap-like feel, skin conditioning, skin moisturizing, stability, cleansing, lathering and rinsing.

Claims (19)

1, a kind of liquid personal cleansing composition comprises:

(a) about surfactant of 5%～about 60% (wt), it is selected from anion, nonionic, amphion and amphoteric surfactant and composition thereof;

(b) about C of 0.1%～about 5% (wt) ₁₄-C ₂₂The water-insoluble salt of fatty acid;

(c) Ren Xuan about 0.01%～about 5% (wt) cation or nonionic polymerization skin conditioning agent; With

(d) water.

2, the compositions of claim 1, wherein water-insoluble salt is selected from C ₁₄-C ₂₂The zinc of fatty acid, magnesium, calcium, lithium and aluminum salt and composition thereof.

3, the compositions of claim 2, wherein water-insoluble salt is a zinc stearate.

4, each compositions in the claim 1 to 3, wherein water-insoluble C ₁₄-C ₂₂Fatty acid salt content is about 0.5%～2% (wt).

5, each compositions in the claim 1 to 4, wherein the viscosity of said composition (Brookfield.RVT, DCP, lrpm, Cone CP41 or CP52,25 ℃, pure substance) is 1,000 to 50,000 centipoise (cps).

6, each compositions in the claim 1 to 5, wherein the weight average molecular weight of polymerization skin conditioning agent is about 2000 to 5,000,000, preferred about 5000 to 3,000,000.

7, each compositions in the claim 1 to 6, wherein the polymerization skin conditioning agent is selected from cation and nonionic polysaccharide; The cation of derived from propylene acid and/or methacrylic acid and nonionic homopolymer and copolymer; Cation and non-ionic cellulose resin; Dimethyl diallyl ammonium chloride and acrylic acid cation copolymer; The cationic homopolymer of dimethyl diallyl ammonium chloride; Cation polyolefin and ethyoxyl polyalkylene imine; Quaternised siloxanes and their mixture.

8, each compositions in the claim 1 to 7, the weight ratio of wherein water-insoluble soap and polymerization skin conditioning agent are about 50: 1 to 1: 10.

9, each compositions in the claim 1 to 8, the mixture that comprises anion and amphion and/or amphoteric surfactant, and the content of wherein independent anion, amphion and amphoteric surfactant is about 1% to about 15%, preferred about 2% to 13% (wt).

10, each compositions in the claim 1 to 9 wherein contains 0.1% non-ionic surface active agent to about 20% weight of having an appointment, and it is selected from the oil of ethoxylation with following logical formula V or fatty:

Wherein n is about 5 to about 200, and preferred about 20 to about 100, more preferably from about 30 to about 85, and wherein R comprises aliphatic group, and it has average about 5 to about 20 carbon atoms, and preferred about 9 to about 20 carbon atoms, more preferably from about 11 to about 18 carbon atoms, and most preferably from about 12 to about 16 carbon atoms.

11, each compositions in the claim 1 to 10; wherein anion surfactant is selected from the alkyl sulfate of ethoxylation; alkyl glycerol ether sulfonate; methyl-acyl taurine salt; fat acidyl glycine salt; alkyl ethoxy carboxylate; the N-acyl glutamate; acyl isethinate; salts of alkyl sulfosuccinates salt, α-sulfonated fatty acid, their salt and/or ester, alkyl phosphate; the alkyl phosphate of ethoxylation, acyl sarcosinates and fatty acid/protein condensation substance and their mixture.

12, each compositions in the claim 1 to 11, wherein anion surfactant comprises the C of ethoxylation ₈-C ₂₂Alkyl sulfate.

13, each compositions in the claim 1 to 12, wherein amphoteric surfactant is selected from:

(a) imidazolidine derivatives of formula (I):

R wherein ₁Be C ₇-C ₂₂Alkyl or alkenyl, R ₂Be hydrogen or CH ₂Z, each Z is respectively CO ₂Or CH ₂CO ₂M, and M is H, alkali metal, alkaline-earth metal, ammonium or alkanol ammonium; And/or the derivant of the ammonium of formula (II):

R wherein ₁, R ₂Define as above with Z;

(b) the amino-alkane hydrochlorate of formula (III):

R ₁NH(CH ₂) _nCO ₂M

And the iminodiacetic alkanoate of formula (IV):

R ₁N[(CH ₂) _mCO ₂M] ₂

Imino group multichain alkyl salt with formula V:

Wherein n, m, p and q are 1 to 4 number, and R ₁With M for independently being selected from the group of above-mentioned definition; With

(c) their mixture.

14, the compositions of claim 13, wherein amphoteric surfactant is selected from the ammonium derivative of the imidazoline salt derivant and/or the formula (II) of formula (I).

15, each compositions in the claim 1 to 14, wherein the weight ratio of anion surfactant and zwitterionic surfactant and/or amphoteric surfactant is about 1: 2 to about 6: 1.

16, each compositions in the claim 1 to 15, wherein anion surfactant, zwitterionic surfactant and amphoteric surfactant account for about 8% to about 35%, preferred about 10% to about 30% of composition weight altogether.

17, each compositions in the claim 1 to 16 contains the C that is selected from of 0.1%-20% (weight) in addition ₁₂-C ₁₄The auxiliary non-ionic surface active agent of fatty acid list or di-methylcarbinol amide and polyhydroxy fatty acid amide surfactant.

18, each compositions in the claim 1 to 17 contains the spice or the oil for cosmetic purpose of 20% weight at the most in addition.

19, each compositions in the claim 1 to 18 contains in addition and is selected from glycerol, Polyethylene Glycol, propylene glycol, sorbitol, the Polyethylene Glycol of methyl glucoside and polypropylene glycol ester, pyrrolidone sodium carboxylate, the humidizer of L-proline and composition thereof.