WO1991017237A1 - Cleansing products - Google Patents

Cleansing products Download PDF

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Publication number
WO1991017237A1
WO1991017237A1 PCT/US1991/001613 US9101613W WO9117237A1 WO 1991017237 A1 WO1991017237 A1 WO 1991017237A1 US 9101613 W US9101613 W US 9101613W WO 9117237 A1 WO9117237 A1 WO 9117237A1
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WO
WIPO (PCT)
Prior art keywords
cleansing
product according
weight
cleansing product
surfactant
Prior art date
Application number
PCT/US1991/001613
Other languages
French (fr)
Inventor
Robert Francis Date
Graeme Douglas Telfer Smith
Mary Louise Batt
Original Assignee
The Procter & Gamble Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to JP91506572A priority Critical patent/JPH05506873A/en
Publication of WO1991017237A1 publication Critical patent/WO1991017237A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/49Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
    • A61K8/494Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom
    • A61K8/4946Imidazoles or their condensed derivatives, e.g. benzimidazoles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • A61K8/442Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof substituted by amido group(s)
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/64Proteins; Peptides; Derivatives or degradation products thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/10Washing or bathing preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • A61Q5/02Preparations for cleaning the hair
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88Ampholytes; Electroneutral compounds
    • C11D1/94Mixtures with anionic, cationic or non-ionic compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/59Mixtures
    • A61K2800/596Mixtures of surface active compounds
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/04Carboxylic acids or salts thereof
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/04Carboxylic acids or salts thereof
    • C11D1/10Amino carboxylic acids; Imino carboxylic acids; Fatty acid condensates thereof
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02Anionic compounds
    • C11D1/32Protein hydrolysates; Fatty acid condensates thereof
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88Ampholytes; Electroneutral compounds
    • C11D1/90Betaines

Definitions

  • the present invention relates to cleansing products.
  • it relates to foam-producing personal cleansing products suitable for cleansing the skin and/or the hair and which may be used, for example, in the form of make-up removal and facial cleansers, foam bath preparations, shower products, shampoos etc.
  • the cleansing products are also suitable for other applications requiring the generation of a stable foam.
  • the invention also relates to cleansing products containing functional components such as antibacterial agents and which display improved efficacy.
  • Foaming cosmetic compositions must satisfy a number of criteria including cleansing power, foaming properties and mildness/low irritancy with respect to the skin, hair and the occular mucosae.
  • Skin is made up of several layers of cells which coat and protect the keratin and collagen fibrous proteins that form the skeleton of its structure.
  • the outermost of these layers, referred to as the stratum corneum is known to be coro ⁇ 5osed of 250 A protein bundles surrounded by 80 A thick layers.
  • Anionic surfactants can penetrate the stratum corneum membrane and, by delipidization (i.e. removal of the lipids from the stratum corneum), destroy its integrity. This destruction of the skin surface topography leads to a rough feel and may eventually permit the surfactant to interact with the keratin, creating irritation.
  • Ideal cosmetic cleansers should cleanse the skin or hair gently, causing little or no irritation without defatting and or drying the skin and without leaving skin taut after frequent use. Most lathering soaps, liquids and bars fail in this respect. Certain synthetic surfactants are known to be mild. However, a major drawback of most mild synthetic surfactant systems when formulated for skin cleansing is poor lather performance compared to the highest bar soap standards (bars which are rich in coconut soap and superfatted) . On the other hand, the use of known high sudsing anionic surfactants with lather boosters can yield acceptable lather volume and quality. Unfortunately, however, the highest sudsing anionic surfactants are, in fact, poor in clinical skin mildness.
  • aqueous skin cleansing compositions in so-called “non-pressurized”, aerated foaming cleanser products is disclosed in US-A-3962150.
  • foam-producing cleanser products which will provide superior foam stability and creaminess simultaneously with excellent mildness, product stability and ease-of-use characteristics over the full range of usage and temperature conditions.
  • personal cleansing products which will provide improved - 3 -
  • the subject of the present invention is a foam-producing cleansing product suitable for personal cleansing of the skin or hair and which may be used as make-up removal and facial cleansers, foam bath and shower products, shampoos etc.
  • the product comprises a compressible non-aerosol dispenser equipped with a reservoir, dispensing head, liquid/air mixing means and preferably homogenizing means and non-return valve means.
  • aqueous cleansing composition comprising:
  • R is C--C 22 alkyl or alkenyl, , is hydrogen or CH 2 Z, each Z is independently CO-M or CH 2 C0 2 M, and M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium; and/or ammonium derivatives of formula IV
  • n and m are numbers from 1 to 4, and R 1 and M are independently selected from the groups specified in (a) above;
  • the cleansing composition has a total surfactant concentration of from about 0.2% to about 20% by weight and wherein the combined concentration of the first and second amphoteric surfactants comprises at least 20% by weight of the total surfactant concentration.
  • the cleansing product comprises a cleansing composition in the form of an aqueous liquid comprising a defined mixture of amphoteric surfactants packaged within a so-called "squeeze foamer” container - a compressible dispenser equipped with a dispensing head and liquid/air mixing means, from which the cleansing composition can be easily dispensed in the form of an aqueous foam by squeezing.
  • a cleansing composition in the form of an aqueous liquid comprising a defined mixture of amphoteric surfactants packaged within a so-called "squeeze foamer” container - a compressible dispenser equipped with a dispensing head and liquid/air mixing means, from which the cleansing composition can be easily dispensed in the form of an aqueous foam by squeezing.
  • the cleansing compositions preferred for use herein comprise a mixture of two amphoteric surfactants, a first amphoteric surfactant being selected from imidazolinium surfactants of formula I
  • R is C 7 -C 22 alkyl or alkenyl
  • R 2 is hydrogen or CH 2 Z
  • each Z is independently C0 2 M or CH 2 C0 2
  • M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium; and/or ammonium derivatives of formula IV
  • R., R 2 and Z are as defined above;
  • amphoteric surfactant being selected from:
  • the cleansing compositions for use herein can also comprise other, preferably mild, surfactant components, notably, anionic surfactants.
  • the mixture of the first and second amphoteric surfactants comprises at least about 60%, more preferably at least about 75% by weight of the total surfactant.
  • Suitable amphoteric surfactants of the first type are marketed under the trade name Miranol and are understood to comprise a complex mixture of species.
  • Miranols have been described as having the general formula I, although the CTFA Cosmetic Ingredient Dictionary, 3rd Edition indicates the non-cyclic structure IV. In practice, a complex mixture of cyclic and non-cyclic species is likely to exist and both definitions are given here for sake of completeness.
  • compositions comprise a premix or complex of the first amphoteric surfactant and anionic surfactant in an equivalent ratio of about 1:1 in order to provide approximate electroneutrality.
  • suitable amphoteric surfactants for use as the second amphoteric surfactant include salts, especially the triethanolammonium salts and salts of N-lauryl-beta-amino propionic acid and N-lauryl-imino-dipropionic acid.
  • the cleansing compositions preferably contain from about 0.5% to about 10% by weight, more preferably from about 0.5% to about 4% by weight of each of the first and ⁇ second amphoteric surfactants.
  • the weight ratio of first amphoteric surfactant : second amphoteric surfactant is preferably from about 10:1 to about 1:10, more preferably from about 5:1 to about 1:5, especially from about 3:1 to about 1:3.
  • compositions of the invention can comprise or be supplemented by surfactants other than the amphoteric surfactants specified above.
  • the total level of surfactant in the compositions herein should generally lie in the range from about 0.2% to about 20% by weight, preferably from about 1% to about 16%, more preferably from about 1% to about 8% and especially from about 2% to about 6% by weight. It is a feature of the products of the invention that they can provide excellent foam stability and creaminess, even at low levels of cleansing surfactant.
  • a preferred optional surfactant in the compositions herein is an anionic surfactant. This is preferably present in a level of from about 0.1 to 10%, more preferably from about 0.5 to 5% and especially from about 1% to about 3% by weight.
  • Preferred anionic surfactants for inclusion herein, other than alkyl sulfates, ethoxylated alkyl sulfates and acylglyceride sulfates mentioned above, are the fatty acid condensation products of proteins, degraded proteins or amino acids or mixtures of such condensation products. In highly preferred embodiments, the fatty acid condensation products are selected from:
  • condensation products of Cg-C, 2 preferably C 10 ⁇ C 1 8 fatfc y acids with hydrolysed proteins
  • fatty acid sarcosinates derived from Cg-C 22 preferably c 10 *- c 18 fatty acids
  • mixtures thereof preferably C 10 *- c 18 fatty acids
  • Suitable mild synthetic detergent surfactants useful in the cleansing compositions include methyl acyl taurates; fatty acyl glycinates; N-acyl glutamates; alkyl glucosides; alkyl glycerides and ethoxylated glycerides; acyl isethionates; alkyl sulfosuccinates; alpha-sulfonated fatty acids, their salts and/or their esters; alkyl phosphate esters; ethoxylated alkyl phosphate esters; alkyl ether sulfates; glucose esters and alkylated, e.g., methyl glucose esters; mixtures of alkyl ether sulfates and alkyl amine oxides; betaines; sultaines; and mixtures thereof.
  • alkyl ether sulfates with up to 12 ethoxy groups especially ammonium and sodium lauryl ether sulfates.
  • Alkyl and/or acyl chain lengths for these surfactants are preferably
  • Suitable mild synthetic detergent surfactants of these types include:
  • Cg-C,g monoalkyl phosphate salts preferably at least partly in the form of their polyalkanol, e.g., N,N,N'N'-tetraethanol-(ethylenediamine) (Quadrol) salts; N-(C 8 -C 18 fatty acyl) glutamates; Cg-C-g fatty acyl glycinates and/or their mixtures with additional anionic synthetic detergent surfactant, and/or mixtures thereof.
  • compositions of the invention preferably also contain a polymeric thickener at a level from about 0.01% to about 5%, preferably from about 0.04% to about 2% and especially from about 0.05% to about 1%.
  • the polymeric thickener is found to be valuable for enhancing the creaminess and quality of the foam without adversely affecting product dispensing characteristics.
  • the useful polymers should be either soluble or dispersible in water to a level that will raise the viscosity of the corresponding polymer-free composition at least about 1 cps and preferably by from about 2 to about 10 cps, more preferably from about 2 to about 5 cps at 70°F (21.2°C).
  • Suitable polymers are high molecular weight materials (mass-average molecular weight determined, for instance, by light scattering), being generally from about 2,000 to about 3,000,000, preferably from about 5,000 to about 1,000,000 and more preferably from about 7,000 to about 1,000,000).
  • the polymers since the polymers apparently operate by raising the viscosity of the compositions, the polymers preferably have a thickening ability such that a 1% dispersion of the polymer in water at 70 ⁇ F (21.2°C) exceeds about 1 centipoise, preferably about 2 centipoise.
  • Useful polymers are the cationic, nonionic, amphoteric, and anionic polymers useful in the cosmetic field. Preferred are cationic and nonionic polymers used in the cosmetic field as hair or skin conditioning agents.
  • polymeric hair or skin conditioning agents include cationic and nonionic polysaccharides; cationic and nonionic 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.
  • cationic polymeric conditioning agents preferred for use herein include cationic guar gums such as hydroxypropyl trimethyl ammonium guar gum (d.s. of from 0.11 to 0.22) available commercially under the trade names Jaguar C-14-S(RTM) and Jaguar C-17(RTM), and also Jaguar C-16(RTM), which contains hydroxypropyl substituents (d.s. of from 0.8 - 1.1) in addition to the above-specified cationic groups, and quaternized cellulose ethers available commercially under the trade names Ucare Polymer JR and Celquat.
  • cationic guar gums such as hydroxypropyl trimethyl ammonium guar gum (d.s. of from 0.11 to 0.22) available commercially under the trade names Jaguar C-14-S(RTM) and Jaguar C-17(RTM), and also Jaguar C-16(RTM), which contains hydroxypropyl substituents (d.s. of from 0.8 - 1.1) in addition to the above-specified cati
  • Suitable cationic polymers are homopolymers of dimethyldiallylammonium chloride available commercially under the trade name Merquat 100, copolymers of dimethyl aminoethylmethacrylate and acrylamide, copolymers of dimethyldiallylammonium chloride and acrylamide, available commercially under the trade names Merquat 550 and Merquat S, quaternized vinyl pyrrollidone acrylate or methacrylate copolymers of amino alcohol available commercially under the trade name Gafquat, and polyalkyleneimines such as polyethylenimime and ethoxylated polyethylenimine.
  • polymers suitable for the use herein include hydroxyethyl cellulose (e.g. Natrosol 250MXR, Natrosol 250HHR); xanthan gum (e.g. Keltrol T) ; polymers of saccharides or oligogosaccharides with compatible synthetic monomers; quaternized polycarboxylates; polyethyleneglycol mono-and di-esters/ethers (e.g. polyethyleneglycol [20-500] distearate) .
  • hydroxyethyl cellulose e.g. Natrosol 250MXR, Natrosol 250HHR
  • xanthan gum e.g. Keltrol T
  • polymers of saccharides or oligogosaccharides with compatible synthetic monomers e.g. Keltrol T
  • quaternized polycarboxylates e.g. polyethyleneglycol mono-and di-esters/ethers (e.g. polyethyleneglycol [20-500] distearate
  • the cleansing compositions can optionally include a hair or skin moisturizer.
  • the preferred level of moisturizer is from about 3% to about 40% by weight.
  • the moisturizer is nonocclusive and is selected from:
  • nonocclusive moisturizers are glycerine, polyethylene glycol, propylene glycol, sorbitol, polyethylene glycol and propylene glycol ethers of methyl glucose (e.g. methyl glucan-20), polyethylene glycol and propylene glycol ethers of lanolin alcohol (e.g. Solulan-75), sodium pyrrolidone carboxylic acid, lactic acid, urea, L-proline, guanidine, pyrrolidone and mixtures thereof.
  • glycerine is highly preferred.
  • water-soluble nonocclusive moisturizers examples include water-soluble hexadecyl, myristyl, isodecyl or isopropyl esters of adipic, lactic, oleic, stearic, isostearic, myristic or linoleic acids, as well as many of their corresponding alcohol esters (sodium isostearoly-2-lactylate, sodium capryl lactylate) , hydrolyzed protein and other collagen-derived proteins, aloe vera gel and acetamide MEA.
  • water-soluble hexadecyl examples include water-soluble hexadecyl, myristyl, isodecyl or isopropyl esters of adipic, lactic, oleic, stearic, isostearic, myristic or linoleic acids, as well as many of their corresponding alcohol esters (sodium isostearoly-2-lactylate
  • Another valuable feature of the invention is the surprising finding that the efficacy of cleansing compositions which incorporate a functional component such as an antibacterial or germicidal agent is substantially enhanced by incorporation of the cleansing composition within an aerated foaming cleansing pack.
  • functional components which are essentially insoluble in water but which are solubilized in the cleansing composition, preferably in the form of an isotropic micellar solution, have been found to display superior surface deposition and substantivity characteristics and improved efficacy.
  • a personal cleansing composition packaged in a squeeze foamer container in which the composition comprises from about 0.5% to about 16% of a surfactant (synthetic, soap or mixture thereof), and from about 0.01% to about 5%, preferably from about 0.1% to about 4% by weight of a preferably water-insoluble functional component such as an antibacterial agent.
  • a surfactant synthetic, soap or mixture thereof
  • a preferably water-insoluble functional component such as an antibacterial agent
  • Antibacterial agents suitable for use herein include 3,4-di- and 3,4' ,5-tribromosalicylanilides, 4,4'-dichloro-3-(trifluoromethyl) carbanilide, 3,4,4'-trichlorocarbanilide, phenoxyethanol, phenoxypropanol, chlorhexidine salts, hexamidine salts, 2 ' ,4,4'-trichloro-2-hydroxy-diphenyl ether (Trichlosan) , 2,2'-methylene bis (4-chloro-6-bromophenol), salicylic acid, parachlorometaxylenol, l-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-(IH)-pyridone salts (Octopirox) and mixtures thereof.
  • a solubilizer e.g. propylene glycol
  • a solubilizer is preferably also added at a level of from about 0.1% to about 5%
  • a number of additional optional materials can be added to the cleansing compositions.
  • Such materials include proteins and polypeptides and derivatives thereof; water-soluble or solubilizable preservatives such as Germall 115, methyl, ethyl, propyl and butyl esters of hydroxybenzoic acid, EDTA, Euxyl (RTM) K400, Bronopol (2-bromo-2-nitropropane-l,3-diol) ; other moisturizing agents such as hylaronic acid, chitin, and starch-grafted sodium polyacrylates such as Sanwet (RTM) IM-1000, IM-1500 and IM-2500 available from Celanese Superabsorbent Materials, Portsmith, VA, USA and described in USA-A-4,076,663; solvents such as hexylene glycol and propylene glycol; low temperature phase modifiers such as ammonium ion sources (e.g.
  • nonionic emollients can be included as additional skin conditioning agents at levels up to about 10%, preferably from about 1% to about 6%.
  • Such materials include, for example, mineral oils, fatty sorbitan esters (see US-A-3988255, Seiden, issued October 26th 1976), lanolin and lanolin derivatives, esters such as isopropyl myristate and triglycerides such as coconut oil. Water is also present at a level of from about 60% to about 99% preferably at least about 75% by weight of the compositions herein.
  • the pH of the compositions is preferably from about 4 to about 9, more preferably from about 4.5 to about 8.5, pH being controlled, , for example, using a citrate buffer system.
  • the cleansing compositions herein are packaged in a compressible, non-aerosol dispenser of the so-called “squeeze-foamer” type which comprise a reservoir, a dispensing head, liquid/air mixing means and preferably, homogenizing means and non-return valve means.
  • Squeeze foamer packages are well known as exemplified by the disclosures in the following patents: US-A-3,709,437 (Wright, issued January 9th, 1973); US-A-3,937,364 (Wright, issued February 10th, 1976); US-A-4,022,351 (Wright, issued May 10th, 1977); US-A-4,147,306 (Bennett, issued April 3rd, 1979); US-A-4,184,615 (Wright, issued January 22nd 1980); US-A-4,598,862 (Rice, issued July 8th, 1986); US-A-4,615,467 (Grogan et al., issued October 7th, 1986); and FR-A-2,604,622 (Verlhulst, published April 8th, 1988).
  • the above packages do not use any propellant and are therefore safe for the consumer and the environment.
  • the cleansing composition is placed in the container reservoir which may for instance, take the form of a plastic squeeze bottle. Squeezing the container reservoir with the hand forces the composition through liquid/air mixing means where the composition is mixed with air and then preferably through a homogenizing means that makes the foam more homogeneous and controls the consistency of the foam. The foam is then discharged as a uniform, non-pressurized aerated foam through the dispensing head of the dispenser.
  • the minimum force to activate the squeeze foamer is about 1 psig, preferably from about 2 psig to about 15 psig.
  • the minimum force is related to the size of the channels in the dispenser, the viscosity of the composition, etc.
  • the density of the foam should be between about 0.002 and about 0.25 g/cc, preferably between about 0.01 and about 0.07 g/cc.
  • Foam density is inversely related to foam creaminess so lower foam densities are preferred.
  • the invention is illustrated by the following non-limiting examples.
  • R 2 is H
  • Z is C0 2 Na
  • the amphoteric being added as an equimolar complex with sodium lauryl sulfate.
  • R 2 is CH 2 C0 2 Na
  • Z is
  • Polymer 2 Quaternized cellulose ether (Polymer JR 400) .
  • Palm kernal oil fatty acid sarcosinate Anionic 2 Palm kernal oil fatty acid sarcosinate.
  • the squeeze foamer products are made by conventional liquid mixing and filling procedures.
  • the viscosities of the cleansing compositions of Examples I to V are in the range of from 1 to 10 cps (the 60 r.p.m. correction factor is [spindle reading - 0.4] x 0.1).
  • the products display improved foam lathering characteristics (creaminess, abundance, stability) together with excellent cleansing characteristics and mildness. - 18 -
  • the squeeze foamer products are made by conventional liquid mixing and filling procedures.
  • the viscosities of the cleansing compositions of Examples VI to VIII are in the range of from 1 to 10 cps (the 60 r.p.m. correction factor is [spindle reading - 0.4] x 0.1).
  • the products display improved foam lathering characteristics (creaminess, abundance, stability) together with excellent cleansing characteristics antibacterial performance and mildness.

Abstract

A foam-producing cleansing product comprising a compressible, non-aerosol dispenser equipped with a reservoir, dispensing head and liquid/air mixing means, wherein the reservoir contains an aqueous cleansing composition comprising: (a) from about 0.1 to 16 % of animidazolinium or ammonium amphoteric surfactant, (b) from 0.1 to 16 % of an aminoalkanoate or iminodialkanoate amphoteric surfactant, (c) optionally up to 10 % anionic surfactant, and (d) water, wherein the cleansing composition has a total surfactant concentration of from 0.2 % to 20 % of which at least 20 % comprises the mixture of (a) and (b). The composition has improved foam stability and creaminess together with excellent cleansing performance and mildness. It is suitable for use as make-up and facial cleansers, foam and shower products, shampoos, etc.

Description

-i- CLEA SING PRODUCTS
The present invention relates to cleansing products. In particular, it relates to foam-producing personal cleansing products suitable for cleansing the skin and/or the hair and which may be used, for example, in the form of make-up removal and facial cleansers, foam bath preparations, shower products, shampoos etc. The cleansing products are also suitable for other applications requiring the generation of a stable foam. The invention also relates to cleansing products containing functional components such as antibacterial agents and which display improved efficacy.
Foaming cosmetic compositions must satisfy a number of criteria including cleansing power, foaming properties and mildness/low irritancy with respect to the skin, hair and the occular mucosae.
Skin is made up of several layers of cells which coat and protect the keratin and collagen fibrous proteins that form the skeleton of its structure. The outermost of these layers, referred to as the stratum corneum, is known to be coroτ5osed of 250 A protein bundles surrounded by 80 A thick layers. Anionic surfactants can penetrate the stratum corneum membrane and, by delipidization (i.e. removal of the lipids from the stratum corneum), destroy its integrity. This destruction of the skin surface topography leads to a rough feel and may eventually permit the surfactant to interact with the keratin, creating irritation.
Ideal cosmetic cleansers should cleanse the skin or hair gently, causing little or no irritation without defatting and or drying the skin and without leaving skin taut after frequent use. Most lathering soaps, liquids and bars fail in this respect. Certain synthetic surfactants are known to be mild. However, a major drawback of most mild synthetic surfactant systems when formulated for skin cleansing is poor lather performance compared to the highest bar soap standards (bars which are rich in coconut soap and superfatted) . On the other hand, the use of known high sudsing anionic surfactants with lather boosters can yield acceptable lather volume and quality. Unfortunately, however, the highest sudsing anionic surfactants are, in fact, poor in clinical skin mildness. Surfactants that are among the mildest, such as sodium lauryl glyceryl ether sulfonate, (AGS) , are marginal in lather. These two facts make the surfactant selection, the lather and skin feel benefit formulation process a delicate balancing act.
Rather stringent requirements for cosmetic cleansers limit the choice of surface-active agents, and final formulations represent some degree of compromise. Mildness is often obtained at the expense of effective cleansing, or lathering may be sacrificed for either mildness, product stability, or both.
Thus a need exists for cleansing products which will produce a foam which is abundant, stable and of high quality (compactness), which are effective skin and hair cleansers and which are very mild to the skin, hair and occular mucosae.
The use of aqueous skin cleansing compositions in so-called "non-pressurized", aerated foaming cleanser products is disclosed in US-A-3962150. A need exists, however, for foam-producing cleanser products which will provide superior foam stability and creaminess simultaneously with excellent mildness, product stability and ease-of-use characteristics over the full range of usage and temperature conditions. A need also exists for personal cleansing products which will provide improved - 3 -
antibacterial performance.
The subject of the present invention is a foam-producing cleansing product suitable for personal cleansing of the skin or hair and which may be used as make-up removal and facial cleansers, foam bath and shower products, shampoos etc. The product comprises a compressible non-aerosol dispenser equipped with a reservoir, dispensing head, liquid/air mixing means and preferably homogenizing means and non-return valve means. In the reservoir, there is contained in one aspect of the invention an aqueous cleansing composition comprising:
(a) from about 0.1% to about 16% by weight of a first amphoteric surfactant selected from imidazolinium derivatives of formula I
Figure imgf000005_0001
wherein R, is C--C22 alkyl or alkenyl, , is hydrogen or CH2Z, each Z is independently CO-M or CH2C02M, and M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium; and/or ammonium derivatives of formula IV
C2H4OH
I
Figure imgf000005_0002
wherein R,, R2 and Z are as defined above; (b) from about 0.1% to about 16% by weight of a second amphoteric surfactant selected from aminoalkanoates of formula II
RjNHCCH^COjM II
.iminodialkanoates of formula III
R1N[(CH2)mC02M]2 III
and mixtures thereof, wherein n and m are numbers from 1 to 4, and R1 and M are independently selected from the groups specified in (a) above;
(c) optionally up to about 10% of anionic surfactant; and
(d) water;
wherein the cleansing composition has a total surfactant concentration of from about 0.2% to about 20% by weight and wherein the combined concentration of the first and second amphoteric surfactants comprises at least 20% by weight of the total surfactant concentration.
All concentrations and ratios herein are by weight of the cleansing composition, unless otherwise specified.
The invention relates to a foam-producing cleansing product with superior lathering characteristics (creaminess, abundance, stability) combined with excellent mildness, stability, cleansing ability and germicidal performance. In one aspect of the invention, the cleansing product comprises a cleansing composition in the form of an aqueous liquid comprising a defined mixture of amphoteric surfactants packaged within a so-called "squeeze foamer" container - a compressible dispenser equipped with a dispensing head and liquid/air mixing means, from which the cleansing composition can be easily dispensed in the form of an aqueous foam by squeezing. The essential and optional features of the product of this aspect of the invention are indicated below.
The cleansing compositions preferred for use herein comprise a mixture of two amphoteric surfactants, a first amphoteric surfactant being selected from imidazolinium surfactants of formula I
wherein R, is C7-C22 alkyl or alkenyl, R2 is hydrogen or CH2Z, each Z is independently C02M or CH2C02 , and M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium; and/or ammonium derivatives of formula IV
C2H4OH
R1CONH(CH2)2N+ - CH2Z IV
R2
wherein R., R2 and Z are as defined above;
and a second amphoteric surfactant being selected from:
aminoalkanoates of formula II
R1 1NH(CH2-.)Tn-CO2-,M II - 6 -
iminodialkanoates of formula III
R1N[(CH2)mC02M]2 III and mixtures thereof, wherein n and m are numbers from 1 to 4, and R. and M are independently selected from the groups specified above.
The cleansing compositions for use herein can also comprise other, preferably mild, surfactant components, notably, anionic surfactants. Preferred herein, however, are compositions in which the combined concentration of the first and second amphoteric surfactants is at least about 20%, and preferably at least about 50% by weight of the total surfactant concentration, this being desirable from the viewpoint of achieving optimum lathering characteristics. In preferred compositions, the mixture of the first and second amphoteric surfactants comprises at least about 60%, more preferably at least about 75% by weight of the total surfactant.
Suitable amphoteric surfactants of the first type are marketed under the trade name Miranol and are understood to comprise a complex mixture of species. Traditionally, the Miranols have been described as having the general formula I, although the CTFA Cosmetic Ingredient Dictionary, 3rd Edition indicates the non-cyclic structure IV. In practice, a complex mixture of cyclic and non-cyclic species is likely to exist and both definitions are given here for sake of completeness.
Examples of suitable amphoteric surfactants for use as the first amphoteric surfactant include compounds of formula I and/or IV in which R1 is Ca H 17 (especially iso-capryl), CgHlg and C13H23 alkyl. Especially preferred are the compounds in which R1 is CgH19, Z is C02M and R2 is H; and the compounds in which R-. is CτιH 3- z -_s C0 M and R, is CH 2 C0 2 M"
It will be understood that a number of commercially-available amphoteric surfactants of this type are manufactured and sold in the form of complexes with anionic surfactants, especially those of the sulfated C8-C,g alcohol, Cg-C,8 ethoxylated alcohol or C8~C18 acyl glyceride types. In one aspect of the invention therefore, the compositions comprise a premix or complex of the first amphoteric surfactant and anionic surfactant in an equivalent ratio of about 1:1 in order to provide approximate electroneutrality.
Examples of suitable amphoteric surfactants for use as the second amphoteric surfactant include salts, especially the triethanolammonium salts and salts of N-lauryl-beta-amino propionic acid and N-lauryl-imino-dipropionic acid.
The cleansing compositions preferably contain from about 0.5% to about 10% by weight, more preferably from about 0.5% to about 4% by weight of each of the first and second amphoteric surfactants. The weight ratio of first amphoteric surfactant : second amphoteric surfactant is preferably from about 10:1 to about 1:10, more preferably from about 5:1 to about 1:5, especially from about 3:1 to about 1:3.
The compositions of the invention can comprise or be supplemented by surfactants other than the amphoteric surfactants specified above. However, the total level of surfactant in the compositions herein should generally lie in the range from about 0.2% to about 20% by weight, preferably from about 1% to about 16%, more preferably from about 1% to about 8% and especially from about 2% to about 6% by weight. It is a feature of the products of the invention that they can provide excellent foam stability and creaminess, even at low levels of cleansing surfactant.
A preferred optional surfactant in the compositions herein is an anionic surfactant. This is preferably present in a level of from about 0.1 to 10%, more preferably from about 0.5 to 5% and especially from about 1% to about 3% by weight. Preferred anionic surfactants for inclusion herein, other than alkyl sulfates, ethoxylated alkyl sulfates and acylglyceride sulfates mentioned above, are the fatty acid condensation products of proteins, degraded proteins or amino acids or mixtures of such condensation products. In highly preferred embodiments, the fatty acid condensation products are selected from:
(i) condensation products of Cg-C,2, preferably C 10~C18 fatfcy acids with hydrolysed proteins, (ii) fatty acid sarcosinates derived from Cg-C22, preferably c 10*-c 18 fatty acids, and (iii) mixtures thereof.
Other suitable mild synthetic detergent surfactants useful in the cleansing compositions include methyl acyl taurates; fatty acyl glycinates; N-acyl glutamates; alkyl glucosides; alkyl glycerides and ethoxylated glycerides; acyl isethionates; alkyl sulfosuccinates; alpha-sulfonated fatty acids, their salts and/or their esters; alkyl phosphate esters; ethoxylated alkyl phosphate esters; alkyl ether sulfates; glucose esters and alkylated, e.g., methyl glucose esters; mixtures of alkyl ether sulfates and alkyl amine oxides; betaines; sultaines; and mixtures thereof. Included in the surfactants are the alkyl ether sulfates with up to 12 ethoxy groups, especially ammonium and sodium lauryl ether sulfates. Alkyl and/or acyl chain lengths for these surfactants are
Figure imgf000011_0001
preferably
C10"C18'
Suitable mild synthetic detergent surfactants of these types include:
Cg-C,g monoalkyl phosphate salts, preferably at least partly in the form of their polyalkanol, e.g., N,N,N'N'-tetraethanol-(ethylenediamine) (Quadrol) salts; N-(C8-C18 fatty acyl) glutamates; Cg-C-g fatty acyl glycinates and/or their mixtures with additional anionic synthetic detergent surfactant, and/or mixtures thereof.
The compositions of the invention preferably also contain a polymeric thickener at a level from about 0.01% to about 5%, preferably from about 0.04% to about 2% and especially from about 0.05% to about 1%. The polymeric thickener is found to be valuable for enhancing the creaminess and quality of the foam without adversely affecting product dispensing characteristics.
In general, the useful polymers should be either soluble or dispersible in water to a level that will raise the viscosity of the corresponding polymer-free composition at least about 1 cps and preferably by from about 2 to about 10 cps, more preferably from about 2 to about 5 cps at 70°F (21.2°C). Suitable polymers are high molecular weight materials (mass-average molecular weight determined, for instance, by light scattering), being generally from about 2,000 to about 3,000,000, preferably from about 5,000 to about 1,000,000 and more preferably from about 7,000 to about 1,000,000). Since the polymers apparently operate by raising the viscosity of the compositions, the polymers preferably have a thickening ability such that a 1% dispersion of the polymer in water at 70βF (21.2°C) exceeds about 1 centipoise, preferably about 2 centipoise.
Useful polymers are the cationic, nonionic, amphoteric, and anionic polymers useful in the cosmetic field. Preferred are cationic and nonionic polymers used in the cosmetic field as hair or skin conditioning agents.
Representative classes of polymeric hair or skin conditioning agents include cationic and nonionic polysaccharides; cationic and nonionic 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.
By way of exemplification, cationic polymeric conditioning agents preferred for use herein include cationic guar gums such as hydroxypropyl trimethyl ammonium guar gum (d.s. of from 0.11 to 0.22) available commercially under the trade names Jaguar C-14-S(RTM) and Jaguar C-17(RTM), and also Jaguar C-16(RTM), which contains hydroxypropyl substituents (d.s. of from 0.8 - 1.1) in addition to the above-specified cationic groups, and quaternized cellulose ethers available commercially under the trade names Ucare Polymer JR and Celquat. Other suitable cationic polymers are homopolymers of dimethyldiallylammonium chloride available commercially under the trade name Merquat 100, copolymers of dimethyl aminoethylmethacrylate and acrylamide, copolymers of dimethyldiallylammonium chloride and acrylamide, available commercially under the trade names Merquat 550 and Merquat S, quaternized vinyl pyrrollidone acrylate or methacrylate copolymers of amino alcohol available commercially under the trade name Gafquat, and polyalkyleneimines such as polyethylenimime and ethoxylated polyethylenimine.
Other polymers suitable for the use herein include hydroxyethyl cellulose (e.g. Natrosol 250MXR, Natrosol 250HHR); xanthan gum (e.g. Keltrol T) ; polymers of saccharides or oligogosaccharides with compatible synthetic monomers; quaternized polycarboxylates; polyethyleneglycol mono-and di-esters/ethers (e.g. polyethyleneglycol [20-500] distearate) .
The cleansing compositions can optionally include a hair or skin moisturizer. The preferred level of moisturizer is from about 3% to about 40% by weight. In preferred embodiments, the moisturizer is nonocclusive and is selected from:
1. water-soluble liquid polyols;
2. essential amino acid compound found naturally occuring in the stratum corneum of the skin; and
3. water-soluble nonpolyol nonocclusives and mixtures thereof.
Some examples of more preferred nonocclusive moisturizers are glycerine, polyethylene glycol, propylene glycol, sorbitol, polyethylene glycol and propylene glycol ethers of methyl glucose (e.g. methyl glucan-20), polyethylene glycol and propylene glycol ethers of lanolin alcohol (e.g. Solulan-75), sodium pyrrolidone carboxylic acid, lactic acid, urea, L-proline, guanidine, pyrrolidone and mixtures thereof. Of the above, glycerine is highly preferred.
Examples of other water-soluble nonocclusive moisturizers include water-soluble hexadecyl, myristyl, isodecyl or isopropyl esters of adipic, lactic, oleic, stearic, isostearic, myristic or linoleic acids, as well as many of their corresponding alcohol esters (sodium isostearoly-2-lactylate, sodium capryl lactylate) , hydrolyzed protein and other collagen-derived proteins, aloe vera gel and acetamide MEA.
Another valuable feature of the invention is the surprising finding that the efficacy of cleansing compositions which incorporate a functional component such as an antibacterial or germicidal agent is substantially enhanced by incorporation of the cleansing composition within an aerated foaming cleansing pack. In particular, functional components which are essentially insoluble in water but which are solubilized in the cleansing composition, preferably in the form of an isotropic micellar solution, have been found to display superior surface deposition and substantivity characteristics and improved efficacy. According to a second aspect of the invention, therefore, there is provided a personal cleansing composition packaged in a squeeze foamer container in which the composition comprises from about 0.5% to about 16% of a surfactant (synthetic, soap or mixture thereof), and from about 0.01% to about 5%, preferably from about 0.1% to about 4% by weight of a preferably water-insoluble functional component such as an antibacterial agent.
Antibacterial agents suitable for use herein include 3,4-di- and 3,4' ,5-tribromosalicylanilides, 4,4'-dichloro-3-(trifluoromethyl) carbanilide, 3,4,4'-trichlorocarbanilide, phenoxyethanol, phenoxypropanol, chlorhexidine salts, hexamidine salts, 2 ' ,4,4'-trichloro-2-hydroxy-diphenyl ether (Trichlosan) , 2,2'-methylene bis (4-chloro-6-bromophenol), salicylic acid, parachlorometaxylenol, l-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-(IH)-pyridone salts (Octopirox) and mixtures thereof. In the case of water-insoluble antibacterial agents, a solubilizer (e.g. propylene glycol) is preferably also added at a level of from about 0.1% to about 5% by weight.
A number of additional optional materials can be added to the cleansing compositions. Such materials include proteins and polypeptides and derivatives thereof; water-soluble or solubilizable preservatives such as Germall 115, methyl, ethyl, propyl and butyl esters of hydroxybenzoic acid, EDTA, Euxyl (RTM) K400, Bronopol (2-bromo-2-nitropropane-l,3-diol) ; other moisturizing agents such as hylaronic acid, chitin, and starch-grafted sodium polyacrylates such as Sanwet (RTM) IM-1000, IM-1500 and IM-2500 available from Celanese Superabsorbent Materials, Portsmith, VA, USA and described in USA-A-4,076,663; solvents such as hexylene glycol and propylene glycol; low temperature phase modifiers such as ammonium ion sources (e.g. NH.C1); colouring agents; perfumes and perfume solubilizers etc. Conventional nonionic emollients can be included as additional skin conditioning agents at levels up to about 10%, preferably from about 1% to about 6%. Such materials include, for example, mineral oils, fatty sorbitan esters (see US-A-3988255, Seiden, issued October 26th 1976), lanolin and lanolin derivatives, esters such as isopropyl myristate and triglycerides such as coconut oil. Water is also present at a level of from about 60% to about 99% preferably at least about 75% by weight of the compositions herein.
The pH of the compositions is preferably from about 4 to about 9, more preferably from about 4.5 to about 8.5, pH being controlled,, for example, using a citrate buffer system.
The cleansing compositions herein are packaged in a compressible, non-aerosol dispenser of the so-called "squeeze-foamer" type which comprise a reservoir, a dispensing head, liquid/air mixing means and preferably, homogenizing means and non-return valve means.
Squeeze foamer packages are well known as exemplified by the disclosures in the following patents: US-A-3,709,437 (Wright, issued January 9th, 1973); US-A-3,937,364 (Wright, issued February 10th, 1976); US-A-4,022,351 (Wright, issued May 10th, 1977); US-A-4,147,306 (Bennett, issued April 3rd, 1979); US-A-4,184,615 (Wright, issued January 22nd 1980); US-A-4,598,862 (Rice, issued July 8th, 1986); US-A-4,615,467 (Grogan et al., issued October 7th, 1986); and FR-A-2,604,622 (Verlhulst, published April 8th, 1988).
The above packages do not use any propellant and are therefore safe for the consumer and the environment. The cleansing composition is placed in the container reservoir which may for instance, take the form of a plastic squeeze bottle. Squeezing the container reservoir with the hand forces the composition through liquid/air mixing means where the composition is mixed with air and then preferably through a homogenizing means that makes the foam more homogeneous and controls the consistency of the foam. The foam is then discharged as a uniform, non-pressurized aerated foam through the dispensing head of the dispenser.
The minimum force to activate the squeeze foamer is about 1 psig, preferably from about 2 psig to about 15 psig. The minimum force is related to the size of the channels in the dispenser, the viscosity of the composition, etc.
In general, the density of the foam should be between about 0.002 and about 0.25 g/cc, preferably between about 0.01 and about 0.07 g/cc. Foam density is inversely related to foam creaminess so lower foam densities are preferred. The invention is illustrated by the following non-limiting examples.
In the examples, all concentrations are on a 100% active basis and the abbreviations have the following designation:
Amphoteric A Miranol MSA Modified - the amphoteric of formula I and/or IV in which R, is
C9H19' R2 is H, Z is C02Na, the amphoteric being added as an equimolar complex with sodium lauryl sulfate.
Amphoteric B Miranol 2MCA Modified - the amphoteric of formula I and/or IV in which R. is
C11H23' R2 is CH2C02Na, Z is
CO_Na, the amphoteric being added as an equimolar complex with sodium lauryl sulfate.
Amphoteric C Sodium N-lauryl-beta-amino propionate.
Amphoteric D Sodium N-lauryl-beta-iminodipropionate.
Polymer 1 Hydroxyethylcellulose (HEC) Gum [Natrosol 250 HR] Molecular weight about 1,000,000.
Polymer 2 Quaternized cellulose ether (Polymer JR 400) .
Anionic 1 Potassium Coco Hydrolysed Animal Protein.
Anionic 2 Palm kernal oil fatty acid sarcosinate.
Preservative Euxyl K400 - 16 -
Dispenser Squeeze Foamer, manufactured by Kunstoff
Supermatic, consisting of:
1. 150 ml round HDPE/LDPE bottle.
2. Standard push-pull, off-on dispensing head
3. "White" mixing chamber.
4. 11.5 mm long dry tube of 2.00 mm diameter.
EXAMPLES I to V
UL III IV V
Amphoteric A 1.1 2.8 Amphoteric B 2.8 0.9 0.5 Amphoteric C 1.1 Amphoteric D 2.8 1 0.4 2.8 Anionic 1 2.7 Anionic 2 1 Polymer 1 0.12 0.1 0.26 Polymer 2 - 0.3 Glycerol 5 - 5 - 5 Hexylene Glycol 0.6 0.2 0.4 0.1 0.6 EDTA 0.1 0.1 0.1 0.1 0.1
Preservative 0.2 0.2 0.2 0.2 0.2 Water
The squeeze foamer products are made by conventional liquid mixing and filling procedures. The viscosities of the cleansing compositions of Examples I to V (Brookfield LVT, UL adapter, 70°F, 60 r.p.m. spindle speed corrected) are in the range of from 1 to 10 cps (the 60 r.p.m. correction factor is [spindle reading - 0.4] x 0.1).
The products display improved foam lathering characteristics (creaminess, abundance, stability) together with excellent cleansing characteristics and mildness. - 18 -
EXAMPLES VI to VIII
vi VII VIII
Figure imgf000020_0001
The squeeze foamer products are made by conventional liquid mixing and filling procedures. The viscosities of the cleansing compositions of Examples VI to VIII (Brookfield LVT, UL adapter, 70°F, 60 r.p.m. spindle speed corrected) are in the range of from 1 to 10 cps (the 60 r.p.m. correction factor is [spindle reading - 0.4] x 0.1).
The products display improved foam lathering characteristics (creaminess, abundance, stability) together with excellent cleansing characteristics antibacterial performance and mildness.

Claims

CLAIMS -1 9-
1. A foam-producing cleansing product comprising a compressible non-aerosol dispenser equipped with a reservoir, dispensing head and liquid/air mixing means, wherein the reservoir contains an aqueous cleansing composition comprising:
(a) from about 0.1% to about 16% by weight of a first amphoteric surfactant selected from imidazolinium derivatives of formula I
Figure imgf000021_0001
wherein R. is C_-C22 alkyl or alkenyl, R_ is hydrogen or CH Z, each Z is independently C02M or CH2C02 , and M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium; and/or ammonium derivatives of formula IV
Figure imgf000021_0002
R1CONH(CH2)2N .+ - CH2Z IV
R2
wherein R,, 2 and Z are as defined above;
(b) from about 0.1% to about 16% by weight of a second amphoteric surfactant selected from aminoalkanoates of formula II
R- 1NH(CH2,.)nCO2,M II iminodialkanoates of formula III
R1N[(CH2)mC02M]2 III
and mixtures thereof, wherein n and m are numbers from 1 to 4, and R, and M are independently selected from the groups specified in (a) above;
(c) optionally up to about 10% of anionic surfactant; and
(d) water;
and wherein the cleansing composition has a total surfactant concentration of from about 0.2% to about 20% by weight and wherein the combined concentration of the first and second amphoteric surfactants comprises at least 20% by weight of the total surfactant concentration.
2. A cleansing product according to Claim 1 wherein the mixture of first and second amphoteric surfactants comprises at least about 50%, preferably at least about 60%, and more preferably at least about 75% by weight of the total surfactant.
3. A cleansing product according to Claim 1 or 2 wherein the total surfactant concentration is from about 1% to about 16%, preferably from about 1% to about 8% and more preferably from about 2% to about 6% by weight of the cleansing composition.
4. A cleansing product according to any of Claims 1 to 3 comprising from about 0.5% to about 10%, preferably from about 0.5% to about 4% of each of the first and second amphoteric surfactant by weight of the cleansing composition. -21-
5. A cleansing product according to any of Claims 1 to 4 wherein the weight ratio of first amphoteric surfactant:second amphoteric surfactant is from about 10:1 to about 1:10, preferably from about 5:1 to about 1:5, more preferably from about 3:1 to about 1:3.
6. A cleansing product according to any of Claims 1 to 5 additionally comprising from about 0.1% to about 10%, preferably from about 0.5% to about 5%, more preferably from about 1% to 3% of anionic surfactant by weight of the cleansing composition.
7. A cleansing product according to Claim 6 comprising a premix or complex of the first amphoteric surfactant and anionic surfactant in an equivalent ratio of about 1:1.
8. A cleansing product according to Claim 6 wherein the anionic surfactant is a fatty acid condensation product of a protein, degraded protein or amino acid or a mixture of said fatty acid condensation products.
9. A cleansing product according to Claim 8 wherein the fatty acid condensation product is selected from
(i) condensation products of Cg-C,2, preferably C IQ-C,8 fatty acids with hydrolysed proteins, (ii) fatty acid sarcosinates derived from Cg-C22, preferably C10-C18 fatty acids, and (iii) mixtures thereof.
10. A cleansing product according to any of Claims 1 to 9 wherein the cleansing composition has a viscosity (Brookfield LVT, UL adaptor, 70°F, 30-60 r.p.m., speed corrected) of no more than 50cps, preferably no more than 20cps.
11. A cleansing product according to claim 10 wherein the cleansing composition has a viscosity of from about 2 to about 15, preferably from about 2 to about 12 and more preferably from about 4 to about 12 cps.
12. A cleansing product according to any of Claims 1 to 11 comprising from 0.01% to 5%, preferably from about 0.04% to about 2% and more preferably from 0.05% to 1% of polymeric thickener, by weight of the cleansing composition.
13. A cleansing product according to any of Claims 1 to 12 wherein the aqueous cleansing composition comprises from about 3% to about 40% of a hair or skin moisturiser.
14. A cleansing product according to Claim 13 wherein the moisturiser is nonocclusive and is selected from:
1. water-soluble liquid polyols;
2. essential amino acid compounds found naturally occuring in the stratum corneum of the skin; and
3. water-soluble nonpolyol nonocclusives and mixtures thereof.
15. A cleansing product according to Claim 14 wherein the moisturiser is selected from glycerin, polyethylene glycol, propylene glycol, sorbitol, polyethylene glycol and propylene glycol ethers of methyl glucose, polyethylene glycol and propylene glycol ethers of lanolin alcohol, sodium pyrrolidone carboxylic acid, lactic acid, L-proline and mixtures thereof.
16. A cleansing product according to Claim 15 wherein the moisturiser is glycerin.
17. A cleansing product according to Claim 12 wherein the polymer is a polymeric hair or skin conditioning agent which is preferably selected from cationic and nonionic polysaccharides; cationic and nonionic 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.
18. A cleansing product according to any of Claims 1 to 17 additionally comprising from about 0.01% to about 5%, preferably from about 0.1% to about 4% by weight of an antibacterial agent.
19. A cleansing product according to Claim 18 wherein the antibacterial agent is selected from 3,4-di- and
3,4',5-tribromosalicylanilides,
4,4*-dichloro-3-(trifluoromethyl) carbanilide,
3,4, '-trichlorocarbanilide, phenoxyethanol, phenoxypropanol, chlorhexidine salts, hexamidine salts,
2' ,4,4'-trichloro-2-hydroxy-diphenyl ether (Trichlosan) ,
2,2'-methylene bis (4-chloro-6-bromophenol) , salicylic acid, parachlorometaxylenol, l-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl) -2-(IH)-pyridone salts (Octopirox) and mixtures thereof.
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US5783200A (en) * 1997-01-21 1998-07-21 The Procter & Gamble Company Personal cleansing compositions
US5785979A (en) * 1997-01-21 1998-07-28 The Procter & Gamble Company Personal cleansing compositions
US5821237A (en) * 1995-06-07 1998-10-13 The Procter & Gamble Company Compositions for visually improving skin
US5914300A (en) * 1994-06-01 1999-06-22 Lever Brothers Company Mild antimicrobial liquid cleansing formulations comprising hydroxy acid buffering compound or compounds as potentiator of antimicrobial effectiveness
US6030931A (en) * 1998-02-03 2000-02-29 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Foaming cleansing skin product
US6071866A (en) * 1994-06-01 2000-06-06 Lever Brothers Company, Division Of Conopco, Inc. Mild antimicrobial liquid cleansing formulations comprising hydroxy acid buffering compound or compounds as potentiator of antimicrobial effectiveness
WO2001074983A1 (en) * 2000-04-04 2001-10-11 Becton, Dickinson And Company Foamable antimicrobial formulation
WO2002000820A1 (en) * 2000-06-23 2002-01-03 Combe International Ltd. Stable foam for use in disposable wipe
WO2002017876A2 (en) * 2000-08-31 2002-03-07 Unilever Plc Foaming anti-bacterial cleansing skin product
WO2003044144A1 (en) * 2001-11-16 2003-05-30 Becton, Dickinson And Company Foamable antimicrobial formulation
WO2003053388A1 (en) * 2001-12-21 2003-07-03 Henkel Kommanditgesellschaft Auf Aktien Deodorant foam
US20090324508A1 (en) * 2006-07-06 2009-12-31 Centennial Ventures B.V. Broad Spectrum and Skin Friendly Disinfecting Composition
US8063097B2 (en) 2003-04-17 2011-11-22 The Procter & Gamble Company Compositions and methods for regulating mammalian keratinous tissue
CN102626375A (en) * 2012-03-28 2012-08-08 福建省梦娇兰日用化学品有限公司 Cleaning composition containing amino acid type surfactants
WO2017070918A1 (en) * 2015-10-30 2017-05-04 The Procter & Gamble Company Methods of cleaning dishware comprising a direct-foam cleaning product
US10233411B2 (en) 2015-10-30 2019-03-19 The Procter & Gamble Company Direct-foam cleaning products comprising a branched anionic surfactant and glycol ether solvent
US11116705B2 (en) 2017-10-10 2021-09-14 The Procter And Gamble Company Compact shampoo composition containing sulfate-free surfactants
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US11129775B2 (en) 2017-10-10 2021-09-28 The Procter And Gamble Company Method of treating hair or skin with a personal care composition in a foam form
US11129783B2 (en) 2016-10-21 2021-09-28 The Procter And Gamble Plaza Stable compact shampoo products with low viscosity and viscosity reducing agent
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US11154467B2 (en) 2016-10-21 2021-10-26 The Procter And Gamble Plaza Concentrated shampoo dosage of foam designating hair conditioning benefits
US11202740B2 (en) 2016-10-21 2021-12-21 The Procter And Gamble Company Concentrated shampoo dosage of foam for providing hair care benefits
US11224567B2 (en) 2017-06-06 2022-01-18 The Procter And Gamble Company Hair compositions comprising a cationic polymer/silicone mixture providing improved in-use wet feel
US11291616B2 (en) 2015-04-23 2022-04-05 The Procter And Gamble Company Delivery of surfactant soluble anti-dandruff agent
US11318073B2 (en) 2018-06-29 2022-05-03 The Procter And Gamble Company Low surfactant aerosol antidandruff composition
US11446217B2 (en) 2016-03-03 2022-09-20 The Procter & Gamble Company Aerosol antidandruff composition
US11679065B2 (en) 2020-02-27 2023-06-20 The Procter & Gamble Company Compositions with sulfur having enhanced efficacy and aesthetics
US11679073B2 (en) 2017-06-06 2023-06-20 The Procter & Gamble Company Hair compositions providing improved in-use wet feel
US11771635B2 (en) 2021-05-14 2023-10-03 The Procter & Gamble Company Shampoo composition
US11819474B2 (en) 2020-12-04 2023-11-21 The Procter & Gamble Company Hair care compositions comprising malodor reduction materials

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EP0521893A4 (en) * 1990-03-27 1992-11-24 Procter & Gamble Foaming personal cleansing product with foam enhancing polymer.
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WO1992013513A1 (en) * 1991-02-12 1992-08-20 Richardson-Vicks Inc. Cosmetic compositions
WO1993009761A1 (en) * 1991-11-22 1993-05-27 Richardson-Vicks Inc. Combined personal cleansing and moisturizing compositions
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WO1993023511A1 (en) * 1992-05-18 1993-11-25 Henkel Kommanditgesellschaft Auf Aktien Process for cleaning bathroom fittings
WO1994018946A1 (en) * 1993-02-24 1994-09-01 Unilever Plc Concentrated, liquid, personal washing composition comprising alkane diols
US5652228A (en) * 1993-11-12 1997-07-29 The Procter & Gamble Company Topical desquamation compositions
US5849728A (en) * 1993-11-12 1998-12-15 The Procter & Gamble Company Desquamation compositions
US5681852A (en) * 1993-11-12 1997-10-28 The Procter & Gamble Company Desquamation compositions
US5683972A (en) * 1993-12-20 1997-11-04 Colgate-Palmolive Company Foaming oil-in-water emulsion
US5518647A (en) * 1993-12-20 1996-05-21 Colgate-Palmolive Company Foaming liquid emulsion composition
US6071866A (en) * 1994-06-01 2000-06-06 Lever Brothers Company, Division Of Conopco, Inc. Mild antimicrobial liquid cleansing formulations comprising hydroxy acid buffering compound or compounds as potentiator of antimicrobial effectiveness
US5914300A (en) * 1994-06-01 1999-06-22 Lever Brothers Company Mild antimicrobial liquid cleansing formulations comprising hydroxy acid buffering compound or compounds as potentiator of antimicrobial effectiveness
US5631218A (en) * 1994-06-20 1997-05-20 Lever Brothers Company, Division Of Conopco, Inc. Antimicrobial cleaning compositions
US5821237A (en) * 1995-06-07 1998-10-13 The Procter & Gamble Company Compositions for visually improving skin
AU706920B2 (en) * 1995-07-24 1999-07-01 Procter & Gamble Company, The Compositions for topical delivery of active ingredients
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US5811111A (en) * 1995-07-24 1998-09-22 The Procter & Gamble Company Compositions for topical delivery of active ingredients
WO1997003648A1 (en) * 1995-07-24 1997-02-06 The Procter & Gamble Company Compositions for topical delivery of active ingredients
US5785979A (en) * 1997-01-21 1998-07-28 The Procter & Gamble Company Personal cleansing compositions
US5783200A (en) * 1997-01-21 1998-07-21 The Procter & Gamble Company Personal cleansing compositions
US6096697A (en) * 1997-01-21 2000-08-01 The Procter & Gamble Company Personal cleansing compositions providing improved hair and skin conditioning
US6030931A (en) * 1998-02-03 2000-02-29 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Foaming cleansing skin product
EP1052971B2 (en) 1998-02-03 2007-02-28 Unilever Plc Foaming cleansing skin product
WO2001074983A1 (en) * 2000-04-04 2001-10-11 Becton, Dickinson And Company Foamable antimicrobial formulation
WO2002000820A1 (en) * 2000-06-23 2002-01-03 Combe International Ltd. Stable foam for use in disposable wipe
US6818204B2 (en) 2000-06-23 2004-11-16 Combe Incorporated Stable foam for use in disposable wipe
WO2002017876A3 (en) * 2000-08-31 2002-08-22 Unilever Plc Foaming anti-bacterial cleansing skin product
US6537952B2 (en) 2000-08-31 2003-03-25 Unilever Home And Personal Care, Usa Division Of Conopco, Inc. Foaming anti-bacterial cleansing skin product with low water insoluble emollients and foam dispenser
WO2002017876A2 (en) * 2000-08-31 2002-03-07 Unilever Plc Foaming anti-bacterial cleansing skin product
WO2003044144A1 (en) * 2001-11-16 2003-05-30 Becton, Dickinson And Company Foamable antimicrobial formulation
WO2003053388A1 (en) * 2001-12-21 2003-07-03 Henkel Kommanditgesellschaft Auf Aktien Deodorant foam
US8063097B2 (en) 2003-04-17 2011-11-22 The Procter & Gamble Company Compositions and methods for regulating mammalian keratinous tissue
US20090324508A1 (en) * 2006-07-06 2009-12-31 Centennial Ventures B.V. Broad Spectrum and Skin Friendly Disinfecting Composition
CN102626375A (en) * 2012-03-28 2012-08-08 福建省梦娇兰日用化学品有限公司 Cleaning composition containing amino acid type surfactants
US11291616B2 (en) 2015-04-23 2022-04-05 The Procter And Gamble Company Delivery of surfactant soluble anti-dandruff agent
WO2017070918A1 (en) * 2015-10-30 2017-05-04 The Procter & Gamble Company Methods of cleaning dishware comprising a direct-foam cleaning product
US10233411B2 (en) 2015-10-30 2019-03-19 The Procter & Gamble Company Direct-foam cleaning products comprising a branched anionic surfactant and glycol ether solvent
US11446217B2 (en) 2016-03-03 2022-09-20 The Procter & Gamble Company Aerosol antidandruff composition
US11154467B2 (en) 2016-10-21 2021-10-26 The Procter And Gamble Plaza Concentrated shampoo dosage of foam designating hair conditioning benefits
US11202740B2 (en) 2016-10-21 2021-12-21 The Procter And Gamble Company Concentrated shampoo dosage of foam for providing hair care benefits
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US11224567B2 (en) 2017-06-06 2022-01-18 The Procter And Gamble Company Hair compositions comprising a cationic polymer/silicone mixture providing improved in-use wet feel
US11141370B2 (en) 2017-06-06 2021-10-12 The Procter And Gamble Company Hair compositions comprising a cationic polymer mixture and providing improved in-use wet feel
US11679073B2 (en) 2017-06-06 2023-06-20 The Procter & Gamble Company Hair compositions providing improved in-use wet feel
US11129775B2 (en) 2017-10-10 2021-09-28 The Procter And Gamble Company Method of treating hair or skin with a personal care composition in a foam form
US11116704B2 (en) 2017-10-10 2021-09-14 The Procter And Gamble Company Compact shampoo composition
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US11904036B2 (en) 2017-10-10 2024-02-20 The Procter & Gamble Company Sulfate free clear personal cleansing composition comprising low inorganic salt
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US11771635B2 (en) 2021-05-14 2023-10-03 The Procter & Gamble Company Shampoo composition

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EP0526473A1 (en) 1993-02-10
CA2078441A1 (en) 1991-10-28
AU7560091A (en) 1991-11-27
JPH05506873A (en) 1993-10-07
EP0526473A4 (en) 1994-01-19
GB9009824D0 (en) 1990-06-20

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