High polyol cleaning composition

Abstract

The present invention relates to a stable, high polyol-containing cleaning composition. More specifically, the present invention relates to a cleaning composition comprising a polyol, a surfactant and a gelling agent, whereby the cleaning composition is free of air pockets, has excellent moisturizing ability, a viscosity of 40,000 cps or less and a slope of -0.5 to 0.0. The isotropic composition has an oily appearance.

Description

Technical Field

[0001] The present invention relates to stable, high polyol-containing cleaning compositions. More specifically, the present invention relates to a cleaning composition comprising a polyol, a surfactant and a gelling agent, whereby the cleaning composition has excellent moisturizing ability, a viscosity of 40,000 cps or less, and a slope of -0.5 to 0.0. Surprisingly, the high polyol-containing cleaning composition is uniform and substantially free of air pockets, even after shaking or stirring. The cleaning composition is also substantially free of oil, but is isotopic, having an oily appearance. Background Art

[0002] Personal care compositions are commonly used to cleanse the skin and reduce the shine associated with sebum produced in specialized epithelial cells called sebocytes. They are also used to minimize bacteria on the hands and face, making washing considered the most effective way to prevent the spread of germs and bacteria. In fact, experts believe that washing regularly throughout the day can reduce the number of consumers who catch a cold by about 50%.

[0003] Consumers generally prefer compositions that are not only mild to the skin but also deliver benefit agents to the skin. These attributes entice consumers to wash more and reduce their concerns that over-washing can create dry and chapped skin by stripping the skin of important natural elements, including oils. In addition, consumers do not like to use products that look and feel rough and prefer products with an attractive appearance and natural ingredients.

[0004] Thus, the present invention relates to a stable, high polyol-containing cleaning composition. The composition comprises a polyol, a surfactant and a gelling agent, whereby the cleaning composition has excellent moisturizing properties, a viscosity of 40,000 cps or less and a slope of -0.5 to 0.0. Surprisingly, the high polyol-containing cleaning composition is homogeneous and substantially free of air pockets, even after shaking. In fact, the cleaning composition of the present invention is easy to apply and wash off, and has an attractive oily and transparent or translucent appearance, despite the fact that the composition is substantially free of oil.

[0005] Additional Information

[0006] Efforts to prepare moisturizing cleaning compositions have been disclosed. In US Patent Application No. 2013225693, compositions having a cationic surfactant and a moisturizer are described.

[0007] Other efforts to prepare moisturizing compositions have been described. In GB 2330773B2, skin moisturizing formulations containing antibacterial agents are described.

[0008] Other efforts to prepare moisturizing compositions have also been described. In US Pat. No. 6,444,629, personal cleansing compositions having good rinse feel and skin mildness are described.

[0009] There is no any additional information describing the high polyol containing cleaning composition having excellent moisturizing ability as claimed herein. Summary of the invention

[0010] In a first aspect, the present invention relates to a cleaning composition comprising:

[0011] a) 30 to 70% by weight of a polyol;

[0012] b) 0.25 to 6% by weight of a gelling agent;

[0013] c) 1.0 to 32% by weight of a surfactant; and

[0014] d) 5 to 70% by weight of water,

[0015] The cleaning composition has a viscosity of 40,000 cps or less and a slope of -0.5 to 0.0, wherein the cleaning composition is transparent or translucent and substantially free of oil and air pockets.

[0016] In a second aspect, the present invention relates to a cleaning composition comprising:

[0017] a) 30 to 70% by weight of a polyol;

[0018] b) 0.25 to 6% by weight of a gelling agent;

[0019] c) 1.0 to 32% by weight of a surfactant;

[0020] d) 0.5 to 5.5% by weight of a mixture of monoglycerides and sodium benzoate in a weight ratio of 1:1 to 1:3; and

[0021] e) 5 to 70% by weight of water,

[0022] The cleaning composition has a viscosity of 40,000 cps or less and a slope of -0.5 to 0.0, wherein the cleaning composition is transparent or translucent and substantially free of oil and air pockets.

[0023] In a third aspect, the present invention relates to a method of treating the skin using a cleansing composition according to the first or second aspect of the present invention.

[0024] All other aspects of the invention will become more readily apparent from the following description and examples.

[0025] As used herein, skin is meant to include skin on arms (including underarms), face, feet, neck, chest, hands, legs, buttocks and scalp (including hair). As used herein, a high polyol-containing cleaning composition is synonymous with a "cleansing composition", and "high" means 30% by weight or more of a polyol in the cleaning composition. Shaking or stirring includes movement and vibration of the composition, and is particularly of a type associated with manufacturing, filling, transportation, and the like. The cleaning composition of the present invention is transparent or translucent, and the composition is isotropic. Substantially free of oil means that based on the total weight of the cleaning composition, no more than 2.0% by weight of oil, preferably no more than 1.0%, and most preferably 0.001% to no more than 0.5% by weight of oil in the cleaning composition. In one embodiment of the present invention, the cleaning composition is oil-free (0.0% by weight).

[0026] Air pockets, as used herein, means suspended air or air bubbles or particles suspended in the isotropic cleaning compositions of the present invention. Such air pockets are visible and are known to typically have a diameter of 8 to 100 microns, more typically 10 to 90 microns, even more typically 10 to 75 microns. Substantially free of air pockets means that after standing for 3 to 7 days, preferably more than 24 hours to less than 72 hours, most preferably 12 to 24 hours, even after shaking or stirring as defined herein, the cleaning compositions of the present invention are at least 90% free of air pockets, preferably at least 95% free of air pockets, most preferably at least 99% free of air pockets upon visual inspection, based on the volume of the composition assessed visually. Thus, for the avoidance of doubt, if a cleaning composition is visually assessed to be 95% free of air pockets, this means that 95% of the volume of the static composition does not contain any visible suspended air. Oily appearance means that the cleaning composition has the appearance of an oil-based product, such as a product comprising Vitamin E oil, despite the fact that the product is substantially free of oil. The cleaning composition of the present invention is suitable for being a shampoo, a makeup remover (make-up wash), a facial cleanser or a personal care liquid shower gel. Preferably, the cleaning composition of the present invention is a shower gel, which is ready for topical application and is to be wiped or washed off, and is preferably washed off with water. The cleaning composition may optionally contain a medicament or therapeutic agent, but preferably, it is a lotion for cosmetic and non-therapeutic washing. In one embodiment of the present invention, the cleaning composition is a personal cleaning composition particularly suitable for infants. As described below, the cleaning composition of the present invention may optionally contain skin-benefiting ingredients added thereto, such as vitamins and / or derivatives thereof, resorcinols, retinoic acid precursors, colorants, moisturizers, sunscreens, mixtures thereof, etc. The skin-benefiting ingredients (or agents) may be water-soluble or oil-soluble. If used, oil-soluble skin-benefiting agents generally account for up to 1.0% of the weight of the cleaning composition, while water-soluble skin-benefiting agents generally account for up to 10% of the weight of the cleaning composition when used. The cleaning composition generally has a pH of 4.8 to 7.5, preferably 5 to 7.5, and most preferably 6.0 to 7.5. In one embodiment of the present invention, the pH of the cleaning composition may be from 6.3 to 7.2, including all ranges subsumed therein. Unless otherwise stated, the viscosity is obtained using a Discovery HR-2 rheometer using a sandblasted plate with a gap of 1000 microns, and for the first viscosity V A The first shear rate S A 0.1s -1 and for the second viscosity V B The second shear rate S B 10s -1 , all at 25°C and 20 second intervals. The slope as used herein is defined as [Log(V B )-Log(V A )] / [Log(S B )-Log(SA )]. Viscosity is reported in Pascal seconds (1 Pascal second = 1000 centipoise (cps)). Stable as used herein means that the cleaning composition has no discoloration or phase separation after storage at 45°C for at least one (1) month, preferably 2-4 months at 45°C. The term "comprising" is meant to include the terms "consisting essentially of" and "consisting of". For the avoidance of doubt, and for purposes of illustration, the composition of the present invention comprising a surfactant, water and a polyol is meant to include compositions consisting essentially of and compositions consisting of.

[0027] Except in the operating comparative examples, or where otherwise explicitly stated, all numbers in this specification indicating amounts or ratios of materials or conditions and / or physical properties of materials and / or use should be understood to be modified by the word "about". All ranges defined herein are intended to include all ranges contained therein unless otherwise stated. DETAILED DESCRIPTION

[0028] The polyols suitable for use in the present invention are limited to the extent that they are suitable for use in topical compositions and are water-soluble. Illustrative and non-limiting examples of polyols suitable for use in the present invention include sorbitol, glycerol, mannitol, xylitol, maltitol or mixtures thereof. In one embodiment of the invention, based on the gross weight of the polyols used in the cleaning composition, the polyol used is a glycerol of at least 50% weight. In another embodiment of the invention, the polyol used is full glycerol (100% weight). Polyols typically account for 30 to 70% weight of the cleaning composition, preferably account for 35 to 65% weight of the cleaning composition, and most preferably account for 45 to 55% weight of the cleaning composition, including all ranges contained therein.

[0029] With regard to the gelling agent used in the present invention, it is limited to the extent that it can be used in a composition for topical application to a consumer and is suitable for producing a washing composition having a viscosity and slope as defined herein. Illustrative but non-limiting examples of the types of gelling agents suitable for use in the present invention are those classified as saccharides, acrylates, mixtures thereof or derivatives thereof. With regard to polysaccharides, these include carrageenan, and branched polysaccharides sold under the name Traganth Gum, wherein the latter is a branched polysaccharide composed of tragacanth acid and bassorin. Tragacanth gum (about 35%) is a water-soluble polysaccharide, and the major fraction, bassorin (about 65%), contains methyl ether groups and swells in water, thereby remaining water-insoluble and forming gel particles. Such tragacanth gum is commercially available from suppliers such as ISC Gums under the name Tragacanth T-40E. As regards suitable acrylates, these include acrylic acid crosslinked with allyl sucrose or allyl pentaerythritol acrylic acid and C 2+ crosslinked with allyl pentaerythritol. 10 -C 30Alkyl acrylate. Such acrylate is Sold under the name SUPERTRAX® and commercially available from Lubrizol.

[0030] Other suitable acrylates include copolymers formed from esters of acrylic acid and ethoxylated palmityl alcohol with about 25 moles of ethylene oxide and one or more monomers of acrylic acid, methacrylic acid or one of their simple esters. These acrylates are sold, for example, under the name Synthalen and are commercially available from suppliers such as 3V.

[0031] In one embodiment of the present invention, the polysaccharide is carrageenan, and in another embodiment, the polysaccharide is lambda carrageenan (a disaccharide of D-galactose-2-sulfate and D-galactose-2,6-disulfate). In yet another embodiment of the present invention, at least 50%, and preferably at least 75%, and most preferably at least 90% by weight of the gelling agent based on the total weight of the gelling agent in the detergent composition is lambda carrageenan. In a preferred embodiment of the present invention, the gelling agent is a gelling agent that is naturally derived and is at least 95% by weight of lambda carrageenan, preferably 100% by weight of lambda carrageenan (commercially available from suppliers such as CP Kelco), based on the total weight of the gelling agent in the detergent composition. Typically, the gelling agent comprises 0.25 to 6%, preferably 0.35 to 4%, and most preferably 0.5% to 2.5% by weight of the detergent composition, including all ranges subsumed therein.

[0032] Optionally, but usually preferably, monoglycerides are used in the cleaning compositions of the present invention together with preservatives and optionally sodium benzoate. Exemplary monoglycerides suitable for use in the present invention include lauric acid glyceryl, lauric acid / oleic acid glyceryl, adipic acid glyceryl, alginic acid glyceryl, arachidic acid glyceryl, behenic acid glyceryl, capric acid glyceryl, caprylic acid glyceryl, hydroxystearic acid glyceryl, mixtures thereof, and the like. When used, such monoesters account for 0.1 to 1.0% of the cleaning composition, and preferably 0.2 to 0.8%, and most preferably 0.3 to 0.7% by weight, and include all ranges contained therein. When sodium benzoate is optionally used together with monoglycerides, it generally accounts for 0.4 to 3% of the cleaning composition, preferably 0.5 to 2.5% by weight, and most preferably 0.6 to 1.5% by weight, including all ranges contained therein. In one embodiment of the present invention, the weight ratio of monoglyceride to sodium benzoate is from 1:1 to 1:3, and preferably from 1:1 to 1:2.5, and most preferably from 1:1 to 1:2, including all weight ratios subsumed therein.

[0033] The viscosity (measured at 0.1 / s for 20 seconds) of the cleaning compositions of the present invention is 40,000 cps or less, preferably 1,500 to 30,000 cps, most preferably 3,000 to 20,000 cps, including all ranges subsumed therein. The slope of the cleaning compositions is from -0.5 to 0.0, preferably from -0.4 to 0.0, most preferably from -0.3 to 0.0, including all ranges subsumed therein. The viscosity is measured at 25°C.

[0034] As for the anionic surfactants suitable for use in the detergent compositions of the present invention, the anionic surfactants used may include fatty sulfonates, such as primary alkanes (e.g. C8-C 22 ) sulfonates, primary alkanes (e.g. C8-C 22 ) disulfonate, C8-C 22 Olefin sulfonates, C8-C 22 Hydroxyalkane sulfonate or alkyl glyceryl ether sulfonate (AGS); or aromatic sulfonate, such as alkylbenzene sulfonate. The anionic surfactant can also be an alkyl sulfate (e.g. C 12 -C 18 Alkyl sulfates) or alkyl ether sulfates (including alkyl glyceryl ether sulfates). Among them, alkyl ether sulfates are those having the following formula:

[0035] RO(CH2CH2O) n SO3M

[0036] wherein R is an alkyl or alkenyl group having 8 to 18 carbons, preferably 12 to 18 carbons, n has an average value of at least 1.0, preferably less than 5, and most preferably 1 to 4, and M is a solubilizing cation such as sodium, potassium, ammonium or substituted ammonium.

[0037] Anionic surfactants may also include alkyl sulfosuccinates (including monoalkyl and dialkyl, such as C6-C 22 sulfosuccinates); alkyl and acyl taurates (usually methyl taurates), alkyl and acyl sarcosinates, sulfoacetates, C8-C 22 Alkyl phosphates and phosphonates, alkyl phosphate esters and alkoxyalkyl phosphate esters, acyl lactylates, C8-C 22 Monoalkyl succinates and maleates, sulfoacetates, alkyl glucosides and acyl isethionates, etc.

[0038] The sulfosuccinate may be a monoalkyl sulfosuccinate having the formula:

[0039] R 1 O2CCH2CH(SO3M)CO2M;

[0040] and the amide-MEA sulfosuccinate of the formula:

[0041] R 1 CONHCH2CH2O2CCH2CH(SO3M)CO2M, where R 1 Range: C8-C 22 alkyl.

[0042] Sarcosinate is generally represented by the following formula:

[0043] R 2 CON(CH3)CH2CO2M, where R 2 Range: C8-C 20 alkyl.

[0044] Taurate is generally represented by the following formula:

[0045] R 3 CONR 4 CH2CH2SO3M,

[0046] Where R 3 It is C8-C 20 Alkyl, R 4 It is a C1-C4 alkyl group.

[0047] M is a solubilizing cation as described above. Isethionates that can be used include C8-C 18 Acyl isethionates (including those with substituted head groups (such as C 1-4 These esters are prepared by the reaction of an alkali metal isethionate with mixed aliphatic fatty acids having from 6 to 18 carbon atoms and an iodine value of less than 20. Typically at least 75% of the mixed fatty acids have from 12 to 18 carbon atoms and up to 25% have from 6 to 10 carbon atoms.

[0048] Suitable acyl isethionates for use may be alkoxylated isethionates such as described in U.S. Pat. No. 5,393,466, issued Feb. 28, 1995 to Llardi et al., entitled "Fatty acid esters of polyalkoxylated isethionates"; incorporated herein by reference. Such compounds have the general formula:

[0049] R 5 C--O(O)--C(X)H--C(Y)H--(OCH2--CH2) m --SO3M

[0050] Where R 5 is an alkyl group having 8 to 18 carbons, m is an integer from 1 to 4, X and Y are each independently hydrogen or an alkyl group having 1 to 4 carbons, and M is a solubilizing cation as described above.

[0051] In one embodiment of the present invention, the anionic surfactant suitable for use is sodium lauroyl glycinate, sodium cocoyl glycinate, sodium lauroyl glutamate, sodium cocoyl glutamate, sodium lauroyl isethionate, sodium cocoyl isethionate, sodium methyl lauroyl taurate, sodium methyl cocoyl taurate or a mixture thereof. Such anionic surfactants are commercially available from suppliers such as Galaxy Surfactants, Clariant, Sino Lion and Innospec. Sodium cocoyl isethionate, sodium methyl lauroyl taurate, sodium lauroyl gluconate, sodium methyl lauroyl isethionate or a mixture thereof are preferred anionic surfactants suitable for use. In one embodiment of the present invention, the anionic surfactant used is generally at least one of sodium lauroyl glutamate, sodium cocoyl isethionate and / or sodium methyl lauroyl taurate. In a preferred embodiment, the anionic surfactant used in the detergent composition of the present invention is sodium lauroyl glutamate.

[0052] Suitable amphoteric surfactants for use in the present invention (which may be zwitterionic, depending on the pH) include sodium acylamidoacetate, sodium acylamidopropionate, disodium acylamidodiacetate and disodium acylamidodipropionate, wherein the acyl group (i.e., alkanoyl) may contain C7-C 18 Alkyl moiety. Illustrative examples of amphoteric surfactants suitable for use include sodium lauroamphoacetate, sodium cocoamphoacetate, sodium lauroamphoacetate, sodium cocoamphoacetate, or mixtures thereof.

[0053] With regard to zwitterionic surfactants useful in the detergent compositions of the present invention, such surfactants include at least one acid group. Such acid groups may be carboxylic acid or sulfonic acid groups. They typically include quaternary nitrogen and thus may be quaternary amino acids. They typically should include alkyl or alkenyl groups of 7 to 18 carbon atoms and typically conform to the overall structural formula: R 6 --[--C(O)--NH(CH2) q --] r --N + --(R 7 --)(R 8 )A--B, where R 7 is an alkyl or alkenyl group of 7 to 18 carbon atoms; R 7 and R 8 Each is independently an alkyl group, a hydroxyalkyl group or a carboxyalkyl group having 1 to 3 carbon atoms; q is 2 to 4; r is 0 to 1; A is an alkylene group having 1 to 3 carbon atoms optionally substituted by a hydroxy group, and B is --CO2-- or --SO3--.

[0054] Suitable zwitterionic surfactants useful herein and within the above general formula include simple betaines of the formula:

[0055] R 6 --N + --(R 7 )(R 8 )CH2CO2 -

[0056] and amido betaine of the formula:

[0057] R 6 --CONH(CH2) t --N + --(R 7 )(R 8 )CH2CO2 - , where t is 2 or 3.

[0058] In both formulas, R 6 , R 7 and R 8 As defined above. In particular, R 6 Can be C from coconut oil 12 and C 14 mixture of alkyl groups such that at least half, preferably at least three quarters, of the groups R 6 Has 10 to 14 carbon atoms. 7 and R 8 Preferred is methyl.

[0059] Another possibility is that the zwitterionic surfactant is a sulfobetaine of the formula:

[0060] R 6 --N + --(R 7 )(R 8 )(CH2)3SO3 -

[0061] or

[0062] R 6 --CONH(CH2) u --N + --(R 7 )(R 8 )(CH2)3SO3 -

[0063] Where u is 2 or 3, or a variation of these, where - (CH2)3SO3 - Replaced by -CH2C(OH)(H)CH2SO3 - .

[0064] In these formulas, R 6 , R 7 and R8 As defined above.

[0065] Illustrative examples of zwitterionic surfactants suitable for use include betaines, such as cocodimethyl carboxymethyl betaine, cocamidopropyl betaine and lauroyl propyl betaine. Other zwitterionic surfactants suitable for use include cocamidopropyl sultaine. Such surfactants are commercially available from suppliers such as Stepan Company, and it is within the scope of the present invention to use a mixture of the above-mentioned surfactants. In a preferred embodiment, the zwitterionic surfactant used in the washing of the present invention is cocamidopropyl betaine. In another embodiment, cocamidopropyl betaine and sodium lauroyl glutamate are used in a weight ratio of 1:1 to 1:5, preferably in a ratio of 1:1.1 to 1:4, and preferably in a ratio of 1:1.2 to 1:3.5, including all weight ratios contained therein.

[0066] Nonionic surfactants can be used in the detergent compositions of the present invention. When used, nonionic surfactants are generally used at levels as low as 0.5, 1, 1.5 or 2% by weight and as high as 6, 8, 10 or 12% by weight of the detergent composition. Nonionic surfactants that can be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom (e.g., aliphatic alcohols, acids, amides or alkylphenols) and alkylene oxides (particularly ethylene oxide alone or ethylene oxide and propylene oxide). Specific nonionic surfactant compounds are alkyl (C6-C 22 )phenol ethylene oxide condensation products, aliphatic (C8-C 18 ) condensation products of primary or secondary straight or branched chain alcohols with ethylene oxide, and products prepared by the condensation of ethylene oxide with the reaction product of propylene oxide and ethylenediamine. Other nonionic surfactants include long chain tertiary amine oxides, long chain tertiary phosphine oxides, dialkyl sulfoxides, and the like.

[0067] In an embodiment of the present invention, the optional nonionic surfactant may include a fatty acid / alcohol ethoxylate having the following structure: a) HOCH2(CH2) s (CH2CH2O) v or b) HOOC(CH2) c (CH2CH2O) d H; wherein s and v are each independently an integer of up to 18; and c and d are each independently an integer of 1 or greater. In an embodiment of the present invention, s and v are each independently 6 to 18; c and d are each independently 1 to 30. Other options for nonionic surfactants include those having the formula: HOOC(CH2) i -CH=CH--(CH2) k (CH2CH2O) zH, wherein i, k are each independently 5 to 15; and z is 5 to 50. In another embodiment of the present invention, i and k are each independently 6 to 12; and z is 15 to 35.

[0068] The nonionic surfactant may also include sugar amides, such as polysaccharide amides. Specifically, the surfactant may be one of the lactobionamides described in U.S. Pat. No. 5,389,279 to Au et al., entitled "Compositions containing nonionic glycolipid surfactants," issued on February 14, 1995, which is incorporated herein by reference, or one of the sugar amides described in U.S. Pat. No. 5,009,814 to Kelkenberg, entitled "N-polyhydroxyalkyl fatty acid amides as thickeners for liquid aqueous surfactant systems," issued on April 23, 1991, which is incorporated herein by reference.

[0069] In the practice of the present invention, cationic surfactants may optionally be used in the cleaning compositions of the present invention.

[0070] One class of optional cationic surfactants includes heterocyclic ammonium salts such as cetyl or stearyl pyridinium chloride, alkylamidoethyl pyrrylinodium methylsulfate and lapyrium chloride.

[0071] Tetraalkylammonium salts are another class of cationic surfactants suitable for optional use. Examples include cetyl or stearyl trimethyl ammonium chloride or bromide; hydrogenated palm or tallow trimethyl ammonium halide; behenyl trimethyl ammonium halide or methyl sulfate; decyl isononyl dimethyl ammonium halide; ditallow (or distearoyl) dimethyl ammonium halide and behenyl dimethyl ammonium chloride.

[0072] Other types of cationic surfactants that can be used are various ethoxylated quaternary amines and esterquats. Examples include PEG-5 stearyl ammonium lactylate (e.g., Genamin KSL manufactured by Clariant), PEG-2 cocoyl ammonium chloride, PEG-15 hydrogenated tallow ammonium chloride, PEG 15 stearyl ammonium chloride, dipalmitoyl ethyl methyl ammonium chloride, dipalmitoyl hydroxyethyl methyl sulfate, and stearamidopropyl dimethylamine lactylate.

[0073] Still other useful cationic surfactants suitable for optional use include quaternized hydrolysates of silk, wheat and keratin proteins, and it is within the scope of the present invention to use mixtures of the foregoing cationic surfactants.

[0074] If used, cationic surfactants will comprise no more than 1.0% by weight of the cleaning composition. When present, they typically comprise from 0.01 to 0.7%, and more typically from 0.1 to 0.5% by weight of the cleaning composition, including all ranges subsumed therein.

[0075] In an embodiment of the present invention, the washing composition of the present invention will be substantially free of polymeric quaternary ammonium compounds (including salts thereof). In another embodiment, the washing composition will contain less than 0.1% by weight of a polymeric quaternary ammonium compound. In yet another embodiment, the washing composition contains less than 0.01% by weight of a polymeric quaternary ammonium compound. In even another embodiment, the washing composition contains no polymeric quaternary ammonium compounds (i.e., 0.0%).

[0076] Water typically comprises from 5 to 70% by weight of the cleaning composition, preferably from 20 to 60% by weight, and most preferably from 25 to 55% by weight, including all ranges subsumed therein.

[0077] A suitable pH adjuster may be used to adjust / buffer the pH. Such pH adjusters include triethylamine, NaOH, KOH, H2SO4, HCl, C6H8O7 (i.e., citric acid), or mixtures thereof. The pH adjuster is added in an amount that produces the desired final pH. The pH value can be assessed using commercial instruments, such as those available from Thermo Fisher Scientific. The pH meter was commercially available from the company.

[0078] Optional skin benefit agents are suitable for use in the cleansing compositions of the present invention only to the extent that they are capable of being topically applied and are suitably soluble in the cleansing composition at the desired pH.

[0079] Illustrative examples of beneficial agents suitable for inclusion in the water portion of the detergent composition are acids, such as amino acids, such as arginine, valine or histidine. Other water-soluble beneficial agents suitable include vitamin B2, niacinamide (vitamin B3), vitamin B6, vitamin C, and mixtures thereof. Water-soluble derivatives of these vitamins can also be used. For example, vitamin C derivatives, such as ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate and ascorbyl glycosides, can be used alone or in combination with each other. Other water-soluble beneficial agents suitable include 4-ethylresorcinol, extracts such as sage, aloe, green tea, grape seed, thyme, chamomile, yarrow, cucumber, licorice, rosemary extract or mixtures thereof. Water-soluble sunscreens can also be used, such as ensolizole. When present in the present invention, the total amount of optional water-soluble beneficial agents (including mixtures) can be in the range of 0.0 to 10%, preferably 0.001 to 8%, and most preferably 0.01 to 6% by weight based on the total weight of the detergent composition, and include all ranges contained therein.

[0080] It is also within the scope of the present invention to optionally include an oil (i.e. non-water) soluble benefit agent. Again, the cleaning composition is substantially oil-free, and preferably oil-free (0.0%), where oil is not meant to include any oil added from a fragrance. Thus, the oil-soluble active or benefit agent is dissolved in the surfactant used. The only limitation on such an oil-soluble benefit agent is that it is suitable for providing a benefit when applied topically.

[0081] Illustrative examples of the types of oil-soluble benefit agents that may optionally be used in the compositions of the present invention include components such as stearic acid, vitamins such as vitamins A, D, E and K (and their oil-soluble derivatives), sunscreens such as ethylhexyl methoxycinnamate, bis-ethylhexyloxyphenol methoxyphenol triazine, 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propionic acid, drometrizole trisiloxane, 3,3,5-trimethylcyclohexyl 2-hydroxybenzoate, 2-ethylhexyl-2-hydroxybenzoate, or mixtures thereof.

[0082] Other optional oil-soluble benefit agents suitable for use include resorcinols, such as 4-hexylresorcinol, 4-phenylethylresorcinol, 4-cyclopentylresorcinol, 4-cyclohexylresorcinol, 4-isopropylresorcinol, or mixtures thereof. In addition, 5-substituted resorcinols, such as 4-cyclohexyl-5-methylbenzene-1,3-diol, 4-isopropyl-5-methylbenzene-1,3-diol, mixtures thereof, etc., can be used. 5-substituted resorcinols and their synthesis are described in commonly assigned U.S. Published Patent Application No. 2016 / 0000669A1.

[0083] More suitable oil-soluble active ingredients include omega-3 fatty acids, omega-6 fatty acids, climbazole, farnesol, ursolic acid, myristic acid, geranylgeraniol, oleyl betaine, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, 12-hydroxystearic acid, petroselinic acid, conjugated linoleic acid, terpineol, thymol, mixtures thereof, and the like.

[0084] In one embodiment of the present invention, the optional oil-soluble beneficial agent used is a retinoic acid precursor. In one embodiment of the present invention, the retinoic acid precursor is retinol, retinal, retinyl propionate, retinyl palmitate, retinyl acetate or a mixture thereof. Retinyl propionate, retinyl palmitate and mixtures thereof are generally preferred.

[0085] Yet another suitable retinoic acid precursor is provided by Molecular Design International under the name Commercially available hydroxyanasatil retinoic acid ester can be used in admixture with the oil-soluble actives described herein.

[0086] When optional oil-soluble actives are used in the compositions of the present invention, such actives typically comprise from 0.0 to 0.75% by weight of the detergent composition, and preferably from 0.001 to 5%, and most preferably from 0.05 to 0.35%. In yet another embodiment, the oil comprises from 0.1 to 0.5% by weight of the total weight of the detergent composition, including all ranges subsumed therein, and excluding any oil provided by a fragrance.

[0087] In addition to using sodium benzoate and monoglyceride as described above, it may be desirable to incorporate conventional preservatives into the cleaning composition to prevent the growth of potentially harmful microorganisms. Cosmetic chemists are familiar with suitable preservatives and generally select them to meet preservative challenge tests and provide product stability. Suitable traditional preservatives include hydantoin derivatives and propionates. Particularly preferred preservatives are iodopropynyl butylcarbamate, phenoxyethanol, 1,2-octanediol, hydroxyacetophenone, ethylhexylglycerol, hexylene glycol, methylparaben, propylparaben, imidazolidinyl urea, sodium dehydroacetate, dimethyl-dimethyl (DMDM) hydantoin and benzyl alcohol, and mixtures thereof. Other suitable preservatives include sodium dehydroacetate, chlorphenesin ether and decanediol. The selection of preservatives should take into account the use of the composition and possible incompatibility between the preservative and other ingredients in the emulsion. The preservative is preferably used in an amount of 0.01% to 2.0% by weight of the total weight of the cleaning composition, including all ranges contained therein. Also preferred are preservative systems having hydroxyacetophenone alone or in mixture with other preservatives.

[0088] Fragrances, fixatives, chelating agents (such as EDTA) and exfoliants may optionally be included in the cleaning compositions of the present invention. Each of these materials may range from about 0.03 to about 5%, preferably 0.1 to 3% by weight, based on the total weight of the cleaning composition, including all ranges subsumed therein. To the extent exfoliants are used, those selected should have a sufficiently small particle size so that they do not interfere with the performance of any packaging used to dispense the compositions of the present invention.

[0089] Conventional emulsifiers having an HLB greater than 8 may optionally be used. Illustrative examples include Tween 40, 60, 80, polysorbate 20 and mixtures thereof. Typically, emulsifiers for water continuous systems comprise from 0.03 to 1.5% by weight of the cleaning composition.

[0090] Regarding the cleaning composition of the present invention, it generally has 1 to 32%, preferably 2 to 20%, and most preferably 3% to 12% by weight of total surfactants based on the total weight of the cleaning composition, and including all ranges subsumed therein. In an embodiment of the present invention, the cleaning composition comprises 7 to 11% by weight of total surfactants based on the total weight of the cleaning composition, and including all ranges subsumed therein.

[0091] To prepare the detergent compositions herein, the required ingredients may be mixed using conventional equipment under moderate shear and atmospheric conditions at a temperature of from 30 to 85°C whereby shear is continued until a homogeneous product is recovered.

[0092] The packaging used for the cleaning composition is generally not limited, as long as the composition can be dispensed. In an embodiment of the present invention, the cleaning composition is sold in bags, bottles, jars, tubes or cans. The packaging preferably allows unlimited refilling to always reduce plastic waste in the environment.

[0093] The examples are provided to facilitate the understanding of the present invention. They are not intended to limit the scope of the claims.

[0094] All samples in the examples were prepared by mixing the ingredients under moderate shear and at a temperature of about 80°C and a pressure of atmospheric pressure.

[0095] Example 1 Compare samples

[0096]

[0097]

[0098] a-70% water, 3% sodium chloride and minor ingredients

[0099] b-65% water, 4.5% sodium chloride and minor ingredients

[0100] c-15% water and minor ingredients

[0101] d-9% water and minor ingredients

[0102] e-Pa*s×1000=centipoise (CPS)

[0103] ND - Not Determinable, Unstable Formulation

[0104] The viscosities and slopes of the cleaning compositions of Samples 1-6 reflect that they were not prepared in accordance with the present invention. In addition, the compositions were not translucent or transparent and had very obvious signs of cavitation after production and filling into glass jars. The compositions were heavily aerated and after approximately 24 hours, the air had not dissipated. The compositions of these samples were presented to a skilled panel of experts and none concluded that the samples had an oily appearance.

[0105] Example 2 Sample of the present invention

[0106]

[0107]

[0108] a-70% water, 3% sodium chloride and minor substances

[0109] b-65% water, 4.5% sodium chloride and minor substances

[0110] e-PA*s×1000=centipoise (CPS)

[0111] The compositions prepared in Samples 7 through 15 had viscosities and slopes reflecting that they were prepared in accordance with the present invention.

[0112] After preparation, the cleaning composition of the samples was clear and substantially free (upon visual inspection) of air pockets.

[0113] After moving the composition and filling the glass jar, the washing composition had visual signs of cavitation, which almost completely dissipated within about 24 hours. In addition, one skilled in the art observed the composition of Samples 7 to 15 and all concluded that the compositions had an oily appearance, despite the fact that they were formulated to be oil-free.

[0114] Example 3

[0115]

[0116] ND - Not Determinable, Formula Unstable. The data demonstrate that the slope value produced by the gellant in solvent is not indicative of the performance of the cleaning composition, demonstrating that the cleaning compositions of the present invention are unexpectedly superior in that they are substantially free of air pockets and have an oily appearance even when formulated without oil.

Claims

1. A cleaning composition comprising: a) 30 to 70% by weight of a polyol; b) 0.35 to 4% by weight of a gelling agent; c) 1.0 to 32% by weight of a surfactant; and d) 5 to 70% by weight of water, wherein the cleaning composition comprises not more than 2.0% by weight of oil, The surfactant is a mixture of cocamidopropyl betaine and sodium lauroyl glutamate in a weight ratio of 1:1 to 1:5, and further wherein the gelling agent is gum tragacanth, lambda carrageenan, acrylates / Palmeth-25 acrylates copolymer or a mixture thereof, wherein the total surfactant is present in an amount of 1.0 to 32% by weight based on the total weight of the cleaning composition, and The total gelling agent is present in an amount of from 0.35 to 4% by weight of the cleaning composition.

2. A cleaning composition according to claim 1, wherein the composition further comprises monoglycerides.

3. A cleaning composition according to claim 1 or 2, wherein the composition further comprises sodium benzoate.

4. The cleaning composition according to claim 1 or 2, wherein the composition comprises 0.5 to 5.0% by weight of a mixture of monoglyceride and sodium benzoate in a weight ratio of 1:1 to 1:

3.

5. The cleaning composition according to claim 1 or 2, having a viscosity of 40,000 cps (40 Pa-s) or less and a slope of -0.5 to 0.0, wherein viscosity is obtained with a Discovery HR-2 rheometer using a sandblasted plate with a 1000 micron gap and measured at 25°C, and The slope is defined as [Log(V B )-Log(V A )] / [Log(S B )-Log(S A )], For the first viscosity V A The first shear rate S A 0.1s -1 and for the second viscosity V B The second shear rate S B 10s -1 , all measured at 25°C and at 20 second intervals.

6. The cleaning composition according to claim 1 or 2, wherein the polyol is sorbitol, glycerol, mannitol, xylitol, maltitol or a mixture thereof.

7. A cleaning composition according to claim 1 or 2, wherein the gelling agent comprises 0.5 to 2.5% by weight of the cleaning composition.

8. The cleaning composition according to claim 1 or 2, wherein the gelling agent is lambda carrageenan and the polyol is glycerol, and further wherein lambda carrageenan is present in an amount of 0.35 to 4% by weight and the glycerol is present in an amount of 35 to 65% by weight.

9. The cleaning composition according to claim 1 or 2, wherein the cleaning composition is free of oil and air pockets.

10. The cleaning composition according to claim 1 or 2, wherein the cleaning composition is isotropic.

11. The cleaning composition according to claim 1 or 2, wherein the composition comprises 0.5 to 5.5% by weight of a mixture of monoglyceride and sodium benzoate in a weight ratio of 1:1 to 1:2.5, 35 to 65% by weight of water, and has a viscosity of 3,000 cps to 20,000 cps (3-20 Pa-s).

12. The cleaning composition according to claim 2, wherein the monoglyceride is caprylic glyceride.

13. A method for treating skin comprising the steps of: Skin in need of washing is contacted with a composition according to any one of claims 1 to 12, and the composition is washed off with water.

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