Personal care concentrate composition

Abstract

Disclosed herein are personal care compositions. More particularly, disclosed herein are personal care liquid concentrate compositions comprising polyol, aqueous liquid, acrylic acid- based polymer, and a blend of high HLB and low HLB emulsifiers in a ratio of 80:20 to 10:90. Also disclosed herein are personal care end use compositions resulting from dilution of such personal care liquid concentrate compositions with water. Such a personal care liquid concentrate composition unexpectedly remains flowable, has a viscosity ranging from 2,000 to 10,000 mPa∙s when measured after 18 to 24 hours (RV6, 20 rpm) at 20°C to 25°C, hydrates easily, and is convenient to evacuate from packaging.

Description

[0001] P0000741WO Completion

[0002] 1

[0003] PERSONAL CARE CONCENTRATE COMPOSITION

[0004] Field of the Invention

[0005] 5

[0006] Disclosed herein are personal care compositions. More particularly, disclosed herein are personal care liquid concentrate compositions comprising polyol, aqueous liquid, acrylic acidbased polymer, and a blend of high HLB and low HLB emulsifiers in a ratio of 80:20 to 10:90. Also disclosed herein are personal care end use compositions resulting from dilution of such personal care liquid concentrate compositions with water. Such a personal care liquid concentrate composition unexpectedly remains flowable, has a viscosity ranging from 2,000 to 10,000 mPa s when measured after 18 to 24 hours (RV6, 20 rpm) at 20°C to 25°C, hydrates easily, and is convenient to evacuate from packaging.

[0007] 15 Background of the Invention

[0008] It is often publicized that the world’s oceans will soon have more plastic than fish. Given environmental concerns and the desire for consumers and conscious companies to do more for the planet, there is a strong desire to use less plastic when selling products, including consumer

[0009] 20 products. In view of this, efforts have been made to sell product in concentrate form, and therefore, to ship product that comprises less water. The difficulty with concentrates is that consumers often find concentrates difficult to dispense. Other complaints include that the concentrate does not hydrate well or does not produce a homogenous end use product. Still other complaints include that the concentrate upon dilution produces an end use composition

[0010] 25 that is too thin or watery in terms of viscosity.

[0011] It is of increasing interest to develop a flowable personal care liquid concentrate composition that is easy to package and hydrate with limited sheer and water to produce a consumer-desirable homogeneous end use product with limited shear and water. It is also of increasing interest to have a personal care liquid concentrate composition that can be easily used to refill end use packaging to minimize plastic consumption and waste.

[0012] Therefore, the present inventors have recognized a need to develop a personal care liquid concentrate composition that unexpectedly remains flowable, viscosity ranging from 2,000 to

[0013] 35 10,000 mPa s when measured after 18 to 24 hours (RV6, 20 rpm) at 20°C to 25°C, hydrates P0000741WO Completion

[0014] 2 easily, and is convenient to evacuate from packaging. Thus, disclosed herein is a personal care liquid concentrate compositions comprising polyol, aqueous liquid, and a blend of high HLB and low HLB emulsifiers in a ratio of 80:20 to 10:90.

[0015] 5 Additional Information

[0016] Efforts have been disclosed for making hydratable, liquid concentrates comprising a high-HLB surfactant and a low-HLB surfactant.

[0017] U.S. Patent Application Publication No. 2003 / 0050200 provides for a concentrated liquid soap composition that readily increases in viscosity upon dilution with water, the concentrated liquid soap composition containing an amide oxide surfactant or mixture thereof, an anionic surfactant or mixture thereof, electrolyte, water, and a buffering agent.

[0018] 15 U.S. Patent Application Publication No. 2011 / 0287073 relates to an emulsion concentrate comprising water-insoluble oil components, hydrophilic non-ionic emulsifiers, lipophilic coemulsifiers, polyols, and water.

[0019] U.S. Patent Application Publication No. 2019 / 0314255 describes a cleansing concentrate

[0020] 20 composition for use as a lotion, solution, cream, gel, solid or wet wipe saturant comprising a first emulsifier having an HLB between 1 and 9 selected from the group consisting of a polyglyceryl fatty ester, an ethoxylated fatty alcohol, an ethoxylated fatty acid, an ethoxylated sorbitan ester and a mixture thereof; a second emulsifier having an HLB between 9 and 16; an emollient; a preservative system; and an aqueous solvent.

[0021] 25

[0022] U.S. Patent No. 5,817,254 reports an aqueous emulsion concentrate comprising a waterinsoluble oil component, at least one hydrophilic nonionic emulsifier, at least one lipophilic coemulsifier, and water, wherein the emulsion is flowable and pumpable at 20°C.

[0023] U.S. Patent No. 6,271 ,187 relates to a hand soap concentrate having a viscosity of less than about 200 cps and a hand soap use solution having a viscosity of greater than about 1,000 cps.

[0024] U.S. Patent No. 9,072,674 describes a skin cleansing agent composition containing an isotropic liquid phase containing nonionic surfactant having an HLB of higher than 9 and equal to or lower

[0025] 35 than 20; a nonionic surfactant having an HLB of equal to or higher than 5 and equal to or lower P0000741WO Completion

[0026] 3 than 9, an oil agent exhibiting a viscosity at 30°C of equal to or lower than 30 mPa-s, a water- soluble solvent having 3 or more of hydroxyl groups in a single molecule, a water-soluble solvent having 1 or 2 hydroxyl group(s) in a single molecule, a water-soluble polymer, a water-soluble inorganic salt and / or an organic salt; and water.

[0027] 5

[0028] U.S. Patent No. 9,918,911 describes a meta-stable composition including at least one water-in- oil emulsion having a hydrophilic-lipophilic balance of less than 6, at least one non-ionic oil-in- water emulsifier having an HLB of greater than 9, at least one ionic surfactant, and at least one skin care active.

[0029] None of the additional information above describes the claimed personal care concentrate as disclosed herein.

[0030] Summary of the Invention

[0031] 15

[0032] The present invention is directed to personal care liquid concentrate compositions comprising polyol, aqueous liquid, acrylic acid-based polymer, and a blend of high HLB and low HLB emulsifiers in a ratio of 80:20 to 10:90, wherein the personal care liquid concentrate composition unexpectedly remains flowable, has a viscosity ranging from 2,000 to 10,000

[0033] 20 mPa s when measured after 18 to 24 hours (RV6, 20 rpm) at from 20°C to 25°C, hydrates easily, and is convenient to evacuate from packaging.

[0034] Accordingly, in a first aspect, the disclosed composition relates to a personal care liquid concentrate composition comprising:

[0035] 25 a) a polyol; b) 20 to 65% aqueous liquid by weight of the personal care liquid concentrate composition; c) 0.01 to 10% of at least one acrylic acid-based polymer by weight of the personal care liquid concentrate composition; and d) a surfactant blend consisting essentially of nonionic emulsifiers having i) 2 to 20% by weight at least one high HLB emulsifier having an HLB value greater than or equal to 9 and a melting point that is lower than 38°C, and ii) 1 to 15% by weight at least one low HLB emulsifier having an HLB value less than or equal to 8 and a melting point that is lower than 38°C, wherein the high HLB emulsifier and low HLB emulsifier are present in a weight ratio of

[0036] 35 80:20 to 10:90, preferably, in a weight ratio of 60:40 to 15:85, P0000741WO Completion

[0037] 4 wherein the aqueous liquid to acrylic acid-based polymer is present in a weight ratio of 15:1 to 8.5:1 , and further wherein the personal care liquid concentrate composition is flowable with a viscosity ranging from 2,000 to 10,000 mPa s when measured after 18 to 24 hours

[0038] 5 (overnight) (RV6, 20 rpm) at from 20°C to 25°C.

[0039] In a second aspect, there is provided a method of delivering a skin benefit with the personal care liquid composition of the first aspect by diluting the liquid concentrate composition with moderate shear and / or agitation, like shaking, to produce a personal care end use composition and contacting skin, hair, or nails with the end use personal care composition.

[0040] In a third aspect, the invention is directed to a use of the end use composition prepared from the personal care liquid concentrate composition of the first aspect to deliver skin benefits such as moisturization to skin, hair, or nails.

[0041] 15

[0042] In a fourth aspect, there is provided a use of a personal care liquid concentrate composition of the first aspect for delivering a benefit to the skin.

[0043] In a fifth aspect, there is provided a method of manufacturing the personal care liquid concentrate

[0044] 20 composition of the first aspect.

[0045] In a sixth aspect, a method of hydrating / diluting the personal care liquid concentrate composition of the first aspect to produce a personal care end use composition, wherein the personal care end use composition is made by diluting the personal care liquid concentrate composition of the

[0046] 25 first aspect three- to six-times with aqueous liquid, and further wherein the personal care end use composition has a viscosity of at least 2,000 mPa s.

[0047] In a seventh aspect, the invention is directed to a personal care end use composition prepared by: a) hydrating with water a flowable personal care liquid concentrate composition with a viscosity ranging from 2,000 to 10,000 mPa s when measured after 18 to 24 hours (overnight) (RV6, 20 rpm) at from 20°C to 25°C and comprising: i) a polyol, ii) from 20 to 65% aqueous liquid by weight of the personal care liquid concentrate

[0048] 35 composition, P0000741WO Completion

[0049] 5 iii) from 0.01 to 10% of at least one acrylic acid-based polymer by weight of the personal care liquid concentrate composition, and iv) a surfactant blend consisting essentially of nonionic emulsifiers having

[0050] 1) from 2 to 20% by weight at least one high HLB emulsifier having an HLB

[0051] 5 value greater than or equal to 9 and a melting point that is lower than 38°C, and

[0052] 2) from 1 to 15% by weight at least one low HLB emulsifier having an HLB value less than or equal to 8 and a melting point that is lower than 38°C; b) mixing the personal care liquid concentrate composition with the water in under 5 minutes with shear and / or agitation, and c) recovering the personal care end use composition, wherein the personal care end use composition has a viscosity of at least 2,000 mPa s, preferably, from 2,000 mPa s to 60,000 mPa s.

[0053] 15 All other aspects of the present personal care compositions will become more readily apparent upon considering the detailed description and examples which follow.

[0054] Unless explicitly stated otherwise, all ranges described herein are meant to include all ranges subsumed therein. The term “comprises” is meant to encompass the terms consisting

[0055] 20 essentially of and consisting of. For the avoidance of doubt, a composition comprising polyol, aqueous liquid, acrylic acid-based polymer, and a blend of high HLB and low HLB emulsifiers in a ratio of 80:20 to 10:90 is also meant to consist essentially of and consist of the same. As to the weight percentages used herein, the same are meant to be by weight of ingredient, (e.g., not including any water it may be supplied with) based on total weight of the composition

[0056] 25 described unless noted otherwise. Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers used in this description indicating amounts, or ratios of materials and / or use thereof are to be understood as modified by the word “about.”

[0057] The disclosure of the invention as found herein is to be considered to cover all aspects as found in the claims as being multiply dependent upon each other irrespective of the fact that claims may be found without multiple dependency or redundancy. Unless otherwise specified, numerical ranges expressed in the format "from x to y" are understood to include x and y. In specifying any range of values or amounts, any particular upper value or amount can be associated with any particular lower value or amount. All percentages and ratios contained

[0058] 35 herein are calculated by weight unless otherwise indicated. P0000741WO Completion

[0059] 6

[0060] Detailed Description of the Invention

[0061] The polyol compounds comprised in the disclosed personal care liquid concentrate compositions are polyhydric alcohol-type materials. Illustrative but nonlimiting examples of desirable polyhydric

[0062] 5 alcohols include glycerol (i.e., glycerine or glycerin), propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol, sorbitol, hydroxypropyl sorbitol, hexylene glycol, 1 ,3- butylene glycol, isoprene glycol, 1 ,2,6-hexanetriol, ethoxylated glycerol, propoxylated glycerol, and a combination thereof. In one aspect, the polyol includes glycerin, butylene glycol, sorbitol, or a combination thereof. The amount of polyol employed may range anywhere from 1 to 45%,

[0063] 10 or 5 to 30%, or 10 to 20% by weight of the personal care liquid concentrate composition.

[0064] Personal care liquid concentrate compositions disclosed herein also comprise an aqueous liquid (i.e., aqueous solvent). Preferably, the aqueous liquid comprises at least 60%, or at least 80%, or at least 90% by weight water. More preferably, the aqueous liquid is water. The amount

[0065] 15 of aqueous liquid in the personal care liquid concentrate composition ranges from 20 to 65%, or 20 to 60%, or 25 to 62%, or 30 to 60%, or 35 to 55% by weight of the composition.

[0066] A high HLB emulsifier is present in the personal care liquid concentrate compositions disclosed herein. As used herein, “HLB” stands for the hydrophilic-lipophilic balance of a surfactant, used

[0067] 20 to measure the degree to which a surfactant is hydrophilic or lipophilic, and is widely used in the art. Emulsifiers desirable for use have an HLB value greater than or equal to 9, or greater than 11 , or from 11 to 19, or from 12 to 18, or from 13 to 17. In an aspect of the disclosed personal care liquid concentrate composition, the high HLB emulsifier has an HLB value from 13.5 to 17. Desirable high HLB emulsifiers are emulsifiers are characterized by low melting points. The

[0068] 25 disclosed personal care liquid concentrate compositions comprise emulsifiers with melting points lower than 38°C, or melting points ranging from -40°C to 38°C, or melting points lower than 35°C, or melting points from -30°C to 35°C. Illustrative but nonlimiting examples of high HLB emulsifiers for use include alkyl polyglucosides, sugar fatty acid esters, aldobionamides, polyhydroxy fatty acid amides, and a combination thereof. In one aspect, the high HLB

[0069] 30 emulsifier comprises polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan trioleate, PEG-40 hydrogenated castor oil, PEG-60 hydrogenated castor oil, polysorbate 20 (i.e., Tween 20), polysorbate 80 (i.e., Tween 80), polysorbate 85, polyglyceryl-4 laurate / succinate, or a combination thereof. In another aspect, the high HLB emulsifier comprises PEG-60

[0070] 35 hydrogenated castor oil, polysorbate 20, polysorbate 80, and a combination thereof. Total P0000741WO Completion

[0071] 7 concentration of the high HLB emulsifier may range from 2 to 20%, or from 3 to 15%, or from 3 to 10%, or from 4 to 10%, or from 5 to 10%, or from 4 to 8% by weight of the personal care liquid concentrate composition, including all ranges subsumed therein.

[0072] 5 Desirable emulsifiers characterized by a low HLB for use in the personal care liquid concentrate compositions disclosed herein are those that have an HLB value less than or equal to 8, or less than or equal to 7, or from 2 to 6.7, or 2.5 to 6.5, or 3 to 6. In an aspect of the disclosed personal care liquid concentrate composition, the low HLB emulsifier has an HLB value from 3 to 5.5. Desirable low HLB emulsifiers are characterized by low melting points. The disclosed personal care liquid concentrate compositions comprise emulsifiers with melting points lower than 38°C, or melting points ranging from -5°C to 38°C, or melting points lower than 35°C, or melting points from -0°C to 35°C. Illustrative examples of low HLB emulsifiers desirable for use include, but are not limited to, organic acid esters of monoglycerides such as lactic acid esters, polyglycerol esters of fatty acids like triglycerol monostearate, propylene glycol esters of fatty

[0073] 15 acids like propylene glycol monostearate, and sorbitan esters of fatty acids. Other nonionic emulsifiers having an HLB less than or equal to 8 could also include fatty alcohols. Illustrative non-limiting examples of alcohols which may be used include caprylic alcohol, decyl alcohol, lauryl alcohol, oleyl alcohol, palm kernel alcohol, isostearyl alcohol, tridecyl alcohol, myristyl alcohol, combinations thereof, or the like. In one aspect, the low HLB emulsifier comprises

[0074] 20 sorbitan monolaurate, sorbitan monooleate (i.e. , Span 80), sorbitan oleate, sorbitan sesquioleate (i.e., Span 83), PEG-7 hydrogenated castor oil, methyl glucose oleate, or a combination thereof. In another aspect, the low HLB emulsifier comprises sorbitan monooleate, sorbitan sesquioleate, PEG-7 hydrogenated castor oil, or a combination thereof. Total concentration of the low HLB emulsifier disclosed herein may range from 1 to 15%, or from 1.5

[0075] 25 to 10%, or from 2 to 8%, or from 2 to 6% by weight of the personal care liquid concentrate composition, including all ranges subsumed therein.

[0076] The disclosed personal care liquid concentrate compositions herein comprise a weight ratio of high HLB emulsifier to low HLB emulsifier from 80:20 to 10:90, or from 60:40 to 15:85, or from

[0077] 30 55:45 to 20:80. In another aspect, the weight ratio of high HLB emulsifier to low HLB emulsifier is from 50:50 to 20:80. For the avoidance of doubt, the weight ratio of high HLB emulsifier to low HLB emulsifier is in percentage ratio form. For example, a ratio of 80:20 means 80% : 20%, which is equivalent to a fraction ratio of 4:1. P0000741WO Completion

[0078] 8

[0079] The personal care liquid concentrate composition comprises one or more acrylic acid-based polymer. As used herein, the term “acrylic acid-based” means that the polymer is comprised of monomers derived from acrylic acid. In one embodiment, the desirable acrylic acid-based polymer is a material that has been neutralized by the supplier (i.e., is pre-neutralized) to a pH

[0080] 5 ranging from 4 to 8, or from 4.5 to 7.5, or from 5 to 7.5, or from 5.5 to 6.5, at a temperature of from 20°C to 25°C and atmospheric pressure. In other words, such desirable acrylic acid-based polymers do not require any pH adjustments to swell desirably to achieve a thickening effect. Desirable acrylic acid-based polymers for use include but are not limited to polyacrylamides and acrylate polymers. In an aspect of the disclosed personal care liquid concentrate composition,

[0081] 10 the acrylic acid-based polymer comprises a polyacrylamide, a polyacrylate, a polyacrylic acid derivative, or a combination thereof. For example, a desirable polyacrylamide is SEPIGEL™ 305 as made commercially available by SEPPIC. In another aspect, the acrylic acid-based polymer comprises a polyacrylamide, a polyacrylate, a salt of polyacrylic acid, an ester of polyacrylic acid, an alcohol of polyacrylic acid, or a combination thereof. In yet another aspect, the acrylic acid¬

[0082] 15 based polymer comprises a polyacrylamide, a salt of polyacrylic acid, a polyacrylate, or a combination thereof. In still another aspect, the acrylic acid-based polymer comprises a salt of polyacrylic acid, a polyacrylate, or a combination thereof. In yet still another aspect, the acrylic acid-based polymer is sodium polyacrylate. For example, sodium polyacrylate is commercially available as Cosmedia® SP from BASF, COVACRYL AC from Sensient, and Polyacrylic Acid

[0083] 20 Sodium Salt from Spectrum Chemicals. Acrylic acid-based polymers are included in amounts ranging from 1 to 10%, or from 1.5 to 8%, or from 2 to 7%, or from 2.25 to 6% by weight of the personal care liquid concentrate composition. In still another aspect, the acrylic acid-based polymer has a weight average molecular weight of from 1 ,000 to 15,000 g / mol, or from 2,000 to 10,000 g / mol, or from 3,000 to 8,000 g / mol, or from 4,000 to 7,500 g / mol.

[0084] 25

[0085] Optional, additional polymers may be suitable for use in the present personal care liquid concentrate composition. Illustrative but nonlimiting examples of optional, additional polymers desirable for use include polysaccharides, which comprise of starches, natural / synthetic gums, and cellulosics. Desirable starches include tapioca starch, cornstarch, potato starch, aluminum

[0086] 30 starch octenylsuccinate and sodium hydroxypropyl starch phosphate. Desirable gums include xanthan, sclerotium, pectin, karaya, arabic, agar, guar, carrageenan, alginate, and a combination thereof. Desirable cellulosics include hydroxypropyl cellulose, hydroxypropyl methylcellulose, ethylcellulose and sodium carboxy methylcellulose. Such optional, additional polymers are included in amounts ranging from 0.001 to 1 %, or 0.01 to 0.75%, or 0.05 to 0.5%, or 0.1 to 0.25%

[0087] 35 by weight of the personal care liquid concentrate composition. P0000741WO Completion

[0088] 9

[0089] The disclosed personal care liquid concentrate compositions herein comprise a weight ratio of aqueous liquid to acrylic acid-based polymer from 20:1 to 6.5:1. In another aspect, the weight ratio of aqueous liquid to acrylic acid-based polymer is from 12:1 to 9:1.

[0090] 5

[0091] When using the personal care liquid concentrate composition, concentrate and aqueous liquid, in no particular order, can placed in a mixing vessel and shaken, stirred and / or agitated moderately. Moderate shear such as shaking (or stirring) in a mixing vessel (e.g., a container) will yield the end use personal care composition in less than 5 minutes, preferably, in less than

[0092] 10 3 minutes, and, most preferably, in less than 2 minutes. In an embodiment, the end use personal care composition is made in less than 1 minute, more preferably, less than 30 seconds. The resulting end use personal care composition can be used as desired (e.g., on hands, face, body, and / or hair). The amount of end use personal care composition made is determined by consumer preference. The amount of water used with the personal care liquid

[0093] 15 concentrate composition to make end use composition is also determined by consumer preference. The amount / weight of water used with the personal care liquid concentrate composition to produce end use personal care composition is recommended from 2 to 7 times, or from 3 to 6 times, or from 3 to 5 times, or from 3.5 to 4.5 times the amount / weight of personal care liquid concentrate composition used.

[0094] 20

[0095] In an aspect herein, the present invention encompasses a method of sustainably transporting in the absence of a liquid, such as water, a water-miscible solvent or mixture thereof, a personal care liquid concentrate composition that can be further processed at another location, such as a consumer’s home or a factory, in an environmentally friendly and potentially plastic-free manner

[0096] 25 (e.g. using paperboard to package the personal care liquid concentrate composition). The method comprises the steps of producing the personal care liquid concentrate composition precursor according to the present invention; packing the personal care liquid concentrate composition precursor in presence of no or substantially free of other liquids; transporting the personal care liquid concentrate composition to one’s home or a manufacturing site by any

[0097] 30 conventional means known to one skilled in the art; hydrating the personal care liquid concentrate composition precursor with solvent of choice present at home or the manufacturing site under appropriate agitation; and adding in any optional ingredients, in no particular order, to create the end use composition. This method allows for a more compact and economical shipping and delivery process wherein the solvent is not involved in the transportation

[0098] 35 procedure. P0000741WO Completion

[0099] 10

[0100] Viscosity of the personal care liquid concentrate composition ranges from 2,000 to 10,000 mPa s, or from 2,000 to 9,950 mPa s, or from 3,000 to 9,950 mPa s, or from 3,500 to 9,900 mPa s when taken after 18 to 24 hours (i.e., overnight) under conditions of 20°C to 25°C, standard atmospheric pressure, and a shear rate of 1s-1with a strain controlled parallel plate rheometer made

[0101] 5 commercially available from suppliers like T.A. Instruments under the Discovery name. Alternatively, viscosity can also be measured using a Brookfield Viscometer (speed at 20 revolutions per minute (rpm), spindle (RV) 6, Helipath off, for 30 seconds at 20°C to 25°C and standard atmospheric pressure). Yet, despite having substantial viscosity, the liquid concentrate composition unexpectedly remained a flowable liquid. As used herein, “flowable” refers to a liquid substance’s physical property of being able to move in one direction continuously and easily.

[0102] Upon dilution with aqueous liquid as herein disclosed, the personal care liquid concentrate composition results in an end use composition having at least a viscosity of 2,000 mPa s. It has surprisingly and unexpectedly been found that, upon dilution with aqueous liquid, the liquid

[0103] 15 concentrate composition swells and creates a robust microstructure. Viscosity of the end use composition is typically from 2,000 to 60,000 mPa s, or at least 3,000 mPa s, or from 3,000 to 55,000 mPa s, or at least 4,000 mPa s, or from 5,000 to 50,000 mPa s, or at least 7,500 mPa s, or from 7,500 to 45,000 mPa s, or from 10,000 to 40,000 mPa s taken under conditions of from 20°C to 25°C and atmospheric pressure using the same or similar techniques as disclosed.

[0104] 20

[0105] Optional ingredients that may be used in the personal care liquid concentrate composition disclosed herein include preservatives to assist against the growth of potentially harmful microorganisms when the end use personal care composition is made. Desirable traditional preservatives that may be used include hydantoin derivatives, propionate salts, and a variety of

[0106] 25 quaternary ammonium compounds. Often preferred preservatives are potassium sorbate, iodopropynyl butyl carbamate, phenoxyethanol, methyl paraben, sodium benzoate, wasabibased preservatives, propyl paraben, imidazolidinyl urea, sodium dehydroacetate and benzyl alcohol. Especially preferred additives suitable to be employed in the disclosed personal care liquid concentrate composition are 1 ,2-alkanediols like 1 ,2-octanediol, 1 ,2 hexanediol or

[0107] 30 combinations thereof. In one aspect, the personal care liquid concentrate composition may comprise of a preservative system that is formaldehyde-free, paraben-free, or both. In another aspect, the personal care liquid concentrate composition is substantially free of silicones, sulfates, or a combination thereof. Substantially free of, as used herein, is intended to mean comprising less than 5% by weight, or less than 2% by weight, or less than 0.5% by weight of P0000741WO Completion

[0108] 11 the liquid concentrate composition. In still another aspect, the personal care liquid concentrate composition does not contain silicone, sulfate, or both.

[0109] Traditional fragrance components like eugenol, coumarin, linalyl acetate, citronellal, iris

[0110] 5 concentrate, terpinyl acetate, terpineol, thymol, pinenes (e.g., alpha and beta pinene) and citronellol may optionally be added to the personal care liquid concentrate composition as well.

[0111] If employed, the traditional preservatives, vicinal diol and / or fragrance component will not make up more than 2%, or not more than 1%, or from 0.2 to 0.85% by weight of the end use personal care composition disclosed herein. In one aspect, from 0.2 to 0.8% by weight optional preservative, vicinal diol and / or fragrance component is used, based on total weight of the end use personal care composition.

[0112] Other optional ingredients suitable for use include zinc pyrithione, octopirox, or a combination

[0113] 15 thereof, especially when the end use personal care composition is a conditioner that provides antidandruff benefits. Each of these substances may range from 0.05 to 3%, or between 0.1 and 2% by weight of the total weight of the end use personal care composition.

[0114] Additional optional ingredients that may be used include sensory oils and / or exfoliants.

[0115] 20 Desirable oils include rose, lime, coconut, lavender, argan, sweet almond oil(s) or combinations thereof. Illustrative exfoliants desirable for use include salt, sugar, apricot, walnut shell, rice, nutmeg and / or oatmeal powder(s). When used, sensory oils and exfoliants can make up from 0.1 to 2% by weight of the end use personal care composition, with the proviso that the total amount of fragrance and sensory oil does not exceed 2.5% by weight of the end use personal

[0116] 25 care composition, or not more than 2.0 percent by weight of the end use personal care composition.

[0117] The personal care liquid concentrate composition disclosed herein may include vitamins. Illustrative vitamins are Vitamin B2, Vitamin B3 (niacinamide), Vitamin Be, Vitamin C, Vitamin D, Vitamin E, Folic Acid and Biotin. Derivatives of the vitamins may also be employed. For instance, Vitamin C derivatives include ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate and ascorbyl glycoside. Derivatives of Vitamin E include tocopheryl acetate, tocopheryl palmitate and tocopheryl linoleate. DL-panthenol and derivatives may also be employed. Total amount of vitamins when present may range from 0.001 to 5%, or from 0.01%

[0118] 35 to 4%, or from 0.1 to 3% by weight of the end use personal care composition. P0000741WO Completion

[0119] 12

[0120] Other optional additives desirable for use include resorcinols like 4-ethyl resorcinol, 4-hexyl resorcinol, 4-phenylethyl resorcinol, dimethoxytoluyl propyl resorcinol, 4-cyclopentyl resorcinol, 4-cyclohexylresorcinol, thiamidol; alpha- and / or beta-hydroxyacids; retinoic acid and its derivatives (e.g., cis and trans); retinal; retinol; retinyl esters such as retinyl acetate, retinyl

[0121] 5 palmitate, and retinyl propionate; petroselinic acid; conjugated linoleic acid; 12-hydroxystearic acid; 2-mercaptonicotinoyl glycine (2-MNG); combinations thereof or the like. Still other optional additives like ethanol, quaternary ammonium compounds (like cetrimonium chloride, benzalkonium chloride or the like) and may also be included. Conditioning agents such as polyquaternium compounds (e.g., polyquaternium-67) may also be desirable for inclusion in the inventive composition. Such additives, when used, collectively make up from 0.001 to 3%, or from 0.01 to 2%, or from 0.1 to 1 .5% by weight of the end use personal care composition.

[0122] Desquamation promoters may be present. Illustrative are the alpha-hydroxycarboxylic acids, beta-hydroxycarboxylic acids. The term “acid” is meant to include not only the free acid but also

[0123] 15 salts and C1-C30 alkyl or aryl esters thereof and lactones generated from removal of water to form cyclic or linear lactone structures. Representative acids are glycolic and its derivatives, lactic and malic acids. Amounts of these materials when present may range from 0.01 to 1%, or from 0.1 to 0.5% by weight of the end use personal care composition.

[0124] 20 A variety of herbal extracts may optionally be included in the personal care compositions of this invention. Illustrative extracts include those removed from green tea, yarrow, ginseng, marigold, hibiscus, ginko biloba, chamomile, licorice, aloe vera, grape seed, citrus unshiu, willow bark, sage, rosemary, or a combination thereof. Extracts, when used, typically make up from 0.01 to 3%, or from 0.01 to 2%, or from 0.02 to 1 % by weight of the end use personal care composition.

[0125] 25

[0126] Another optional additive suitable for use includes hemp oil with 2.5 to 25% by weight cannabigerol and / or cannabidiol at from 0.5 to 10 percent by weight. When used, such oil makes up from 0.0001 to 5% by weight of the end use composition, or from 0.01 to 3% by weight of the end use personal care composition.

[0127] Also, optionally desirable for use include materials like chelators (e.g., EDTA), opacifiers (e.g., TiC>2, particle size from 50 to 1200 nm, and preferably, 50 to 350 nm), kaolin, bentonite, zinc oxide, iron oxide, mica, Cs-22 fatty acid substituted saccharides, lipoic acid, retinoxytrimethylsilane (available from Clariant Corp, under the Silcare 1M-75 trademark),

[0128] 35 dehydroepiandrosterone (DHEA) or combinations thereof. Ceramides (including Ceramide 1 , P0000741WO Completion

[0129] 13

[0130] Ceramide 3, Ceramide 3B and Ceramide 6) as well as pseudoceramides may also be optionally included as can 10- and / or 12-hydroxystearic acid. Such additional materials when used may range from 0.0001 to 3%, or from 0.001 to 2%, or from 0.001 to 0.5% by weight of the end use personal care composition.

[0131] 5

[0132] Colorants or dyes may also be included in the disclosed compositions. These substances may range from 0.001 to 3%, preferably, between 0.01 to 1 % by weight of the end use personal care composition.

[0133] Sunscreen actives may also be optionally included in the disclosed personal care liquid concentrate composition. Particularly preferred are such materials as ethylhexyl p- methoxycinnamate, available as Parsol MCX®, Avobenzene, available as Parsol 1789® and benzophenone-3, also known as Oxybenzone. Inorganic sunscreen actives may be employed such as microfine titanium dioxide, zinc oxide, polyethylene and various other polymers.

[0134] 15 Amounts of the sunscreen agents when present may generally range from 0.01 to 3%, or from 0.5 to 2%, or from 0.75 to 1 .5% by weight of the end use personal care composition.

[0135] Conventional buffers / pH modifiers may be used in the end use personal care composition. These include commonly employed additives like sodium hydroxide, potassium hydroxide,

[0136] 20 hydrochloric acid, citric acid / citrate buffers, triethanolamine, or combinations thereof. These materials are added at amounts to obtain the desired pH of the end use personal care composition. Upon desired dilution, it is expected that the pH of the end use personal care composition will range from 3.5 to 7.5, preferably, from 4.0 to 6.5, and, most preferably, from 4.5 to 5.5 where pH is determined using a Thermo Fisher Scientific pH meter.

[0137] 25

[0138] Many types of packaging can be used to store and deliver the present personal care composition. The selection of packaging is dependent upon the personal care end use and the viscosity of the composition itself. As an example, leave-on lotions and creams for skin typically employ plastic containers with an opening at a dispense end covered by an appropriate closure. Conventional closures include flip-top hinged lids, screw-caps and non-aerosol pumps. As another example, appropriate packaging to be used for antiperspirants, deodorants and depilatories include a container with a roller-ball applicator on a dispensing end if the composition is fluid and of a thinner viscosity. If the composition is in an aerosol format, then metallic cans pressurized by a propellant and having a spray nozzle is appropriate. In general, patches, bottles, tubes, roller-ball

[0139] 35 applicators, squeeze containers or lidded jars are preferred. Preferably, the packaging is P0000741WO Completion

[0140] 14 sustainable and comprises PCR (post-consumer recycled or post-consumer resin) plastic, or consists essentially of PCR plastic. In one aspect, the packaging may be refillable packaging, a refillable container, or a filling station for refilling a refillable container (e.g., a kiosk / dispenser station).

[0141] 5

[0142] The term “skin” as used herein includes the skin on the face, neck, chest, back, arms, axilla, buttocks, hands, legs and scalp. Skin benefit agent, as used herein, is meant to include a component that improves a facial or body characteristic after topical application like a skin characteristic and / or benefits the same wherein the skin benefit agent can be, and preferably is, a skin benefit agent in a cream, pump or aerosol spray, serum, lotion, balm, deodorant, gel, or non- or low-foaming wash composition. The personal care liquid concentrate composition after dilution (i.e. , combining with water) is herein referred to as an end use (personal care) composition that is interchangeable with “diluted product.” Therefore, the personal care liquid concentrate composition itself is a precursor to an end use composition. The end use personal

[0143] 15 care composition includes conditioners, lotions, creams, balms, deodorant, shaving creams, masks, and non-foaming cleansers. The term “leave-on” as used with reference to compositions herein means a composition that is applied to or rubbed on the skin, and left thereon. Flowable, as used herein, is meant to describe a composition that moves in a continuous steady flow with gravity. The term “derivative(s)” as used with reference to ingredients herein refers to functional

[0144] 20 group substitutions on the chemical structural backbone including hydroxy, alkoxy and C1-C4 alkyl substitutions.

[0145] The personal care compositions will now be described below in the context of specific non-limiting examples to facilitate a greater understanding of the present personal care compositions. One of

[0146] 25 ordinary skill in the art will recognize that variations of the inventive compositions that differ from the examples given may be practiced without deviating from the teachings of the present compositions.

[0147] Examples

[0148] All samples were made by mixing the mentioned ingredients under conditions of moderate sheer, from 20°C to 85°C, and atmospheric pressure.

[0149] For the avoidance of doubt, as used herein in the Examples, “B” refers to the balancing

[0150] 35 ingredient, “Dilut” refers to the diluted end use composition (4x dilution unless expressly stated P0000741WO Completion

[0151] 15 otherwise), while “Cone” refers to the personal care liquid concentrate composition, where applicable. All viscosities were measured on a Brookfield viscometer (RV6, 20 RPM for 30s at 20°C to 25°C and atmospheric pressure).

[0152] 5 Example 1 : Impact of high HLB / low HLB liquid surfactants at various weight ratios

[0153] Personal care liquid concentrate compositions were made according to the present invention with the ingredients and amounts set forth in Example 1. The personal care liquid concentrate compositions made according to the liquid concentrate compositions disclosed herein were 10 easily flowable.

[0154] P0000741WO Completion

[0155] 16

[0156] P0000741WO Completion

[0157] 17

[0158] All samples in Example 1 illustrate the unexpected impact of varying ratios at which high HLB (i.e., Tween 80) and low HLB (i.e. , Span 80) liquid surfactants on the flowability and viscosity properties of the resultant personal care concentrate, and, where appropriate, the end use personal care composition. Samples that resulted in end use compositions that were too thick 5 did not have measurable viscosities.

[0159] Results unexpectedly demonstrate that compositions consisting of high HLB or low HLB surfactants alone do not produce flowable and / or stable liquid concentrate compositions. Rather, a particular range of weight ratios, namely 80:20 to 10:90, of high HLB to low HLB

[0160] 10 surfactants was found to be desirable. Result also unexpectedly demonstrate that upon a 4x dilution with water, samples made in accordance with the disclosed personal care liquid concentrate compositions maintained or increased the final viscosity of the end use composition. This is surprising because addition of a high amount of water is normally expected to dilute the liquid concentrate composition significantly, resulting in a runny, low viscosity end

[0161] 15 use product.

[0162] P0000741WO Completion

[0163] 18

[0164] Example 2: Compositions not made according to the invention P0000741WG Completion

[0165] 19

[0166] EXAMPLE 2 continued

[0167] 5 The ingredients of the formulae made in Example 2 were mixed in a manner similar to the one described in Example 1. All samples in Example 2 were not made in accordance with the disclosed personal care liquid concentrate composition. Solid surfactants, as demonstrated by the inclusion of PEG-100 stearate and glyceryl stearate, alone or in combinations with other surfactants of varying HLB values and / or states of matter surprisingly did not produce flowable

[0168] 10 liquid concentrate compositions. In fact, the liquid concentrate and end use compositions were too thick to measure (i.e., in form of thick paste / nearly solid) for samples D and E. Where the liquid concentrate compositions were too thick and / or not flowable, the viscosities for the resultant end use composition were not measured.

[0169] P0000741WO Completion

[0170] 20

[0171] Example 3: Additional compositions made according to the invention P0000741WO Completion

[0172] 21

[0173] The ingredients of the formulae made in Example 3 were mixed in a manner similar to the one described in Example 1. Sample 5 is an example of a high glycerin personal care liquid concentrate composition. Sample 6 demonstrates the compatibility of the personal care liquid concentrate composition with the inclusion of additional sensory oils such as silicone oil.

[0174] 5 Sample 7 includes a humectant blend of glycerin and pentylene glycol to demonstrate compatibility of the personal care liquid concentrate composition with different combinations of humectants. Sample 8 incorporates low levels of both stearic acid and glycerin, but flowability and desirable viscosity of the personal care liquid concentrate composition and the end use personal care composition are not impacted negatively. Sample 9 varies the identity of the high

[0175] 10 HLB and low HLB emulsifiers used in the surfactant blend. Sample 10 demonstrates that other types of acrylic acid-based polymers other than sodium polyacrylate in Examples 1 and 2, specifically Polyacrylamide & C13-14 Isoparaffin & Laureth-7, also result in flowability and desirable viscosity in the personal care liquid concentrate composition and the end use personal care composition.

[0176] 15

[0177] All samples in Example 3 unexpectedly resulted in flowable liquid concentrates with desirable viscosities for both concentrates and end use compositions upon 4x dilution.

[0178] P0000741WO Completion

[0179] 22

[0180] Example 4: Varying dilutions based on Sample 8 concentrate

[0181] The liquid concentrate composition used in Example 4 is Sample 8 of Example 3. The dilution (i.e., amount of water) was varied for 3x, 4x, 5x, and 6x dilutions. Results surprisingly

[0182] 5 demonstrate that resultant viscosities are within the disclosed desirable range.

Claims

P0000741WO Completion23Claims1. A personal care liquid concentrate composition comprising: a) a polyol; b) from 20 to 65% aqueous liquid by weight of the personal care liquid concentrate composition; c) from 1 to 10% of at least one acrylic acid-based polymer by weight of the personal care liquid concentrate composition; and d) a surfactant blend consisting essentially of nonionic emulsifiers having i) from 2 to 20% by weight at least one high HLB emulsifier having an HLB value of greater than or equal to 9 and a melting point that is lower than 38°C, and ii) from 1 to 15% by weight at least one low HLB emulsifier having an HLB value of less than or equal to 8 and a melting point that is lower than 38°C, wherein the high HLB emulsifier and low HLB emulsifier are present in a weight ratio of 80:20 to 10:90, preferably, in a weight ratio of 60:40 to 15:85, wherein the aqueous liquid to acrylic acid-based polymer is present in a weight ratio of 20:1 to 6.5:1 , and further wherein the personal care liquid concentrate composition is flowable with a viscosity ranging from 2,000 to 10,000 mPa s when measured after 18 to 24 hours at RV6, 20 rpm at from 20°C to 25°C.

2. A personal care end use composition made by diluting the personal care liquid concentrate composition as claimed in claim 1 three- to six-times with aqueous liquid, wherein the personal care end use composition has a viscosity of at least 2,000 mPa s.

3. The personal care liquid concentrate composition according to claim 1 , wherein the polyol comprises glycerol, propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol, sorbitol, hydroxypropyl sorbitol, hexylene glycol, 1 ,3-butylene glycol, isoprene glycol, 1 ,2,6-hexanetriol, ethoxylated glycerol, propoxylated glycerol, and a combination thereof.

4. The personal care liquid concentrate composition according to claims 1 or 3, wherein the personal care liquid concentrate composition comprises from 1 to 45%, preferably, from 5 to 30% polyol by weight of the personal care liquid concentrate composition.P0000741WG Completion245. The personal care liquid concentrate composition according to any of the preceding claims, wherein the aqueous liquid comprises water and is present in amounts of from 20 to 60%, preferably, from 25 to 62% by weight of the personal care liquid concentrate composition.

6. The personal care liquid concentrate composition according to any of the preceding claims, wherein the acrylic acid-based polymer is present in amounts of from 1.5 to 8%, preferably, from 2 to 7%, by weight of the personal care liquid concentrate composition.

7. The personal care liquid concentrate composition according to any of the preceding claims, wherein the acrylic acid-based polymer comprises a polyacrylamide, a polyacrylate, a polyacrylic acid derivative, or a combination thereof, preferably, a polyacrylamide, a polyacrylate, a salt of polyacrylic acid, an ester of polyacrylic acid, an alcohol of polyacrylic acid, or a combination thereof.

8. The personal care liquid concentrate composition according to any of the preceding claims, wherein the personal care liquid concentrate composition comprises a weight ratio of aqueous liquid to acrylic acid-based polymer from 12:1 to 9:1.

9. The personal care liquid concentrate composition according to any of the preceding claims, wherein the high HLB emulsifier is characterized by having an HLB value greater than or equal to 11 and a melting point ranging from -40°C to 38°C, preferably, a melting point lower than 35°C.

10. The personal care liquid concentrate composition according to any of the preceding claims, wherein the high HLB emulsifier comprises polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan trioleate, PEG-40 hydrogenated castor oil, PEG-60 hydrogenated castor oil, polysorbate 20, polysorbate 80, polysorbate 85, polyglyceryl-4 laurate / succinate, or a combination thereof, further wherein the high HLB emulsifier is present in total amounts of from 2 to 20%, preferably, from 3 to 15%, by weight of the personal care liquid concentrate composition.11 . The personal care liquid concentrate composition according to any of the preceding claims, wherein the low HLB emulsifier is characterized by having an HLB value less than or equal to 7 and a melting point ranging from -5°C to 38°C, preferably, a melting point lower than 35°C.P0000741WG Completion2512. The personal care liquid concentrate composition according to any of the preceding claims, wherein the low HLB emulsifier comprises sorbitan monolaurate, sorbitan monooleate, sorbitan oleate, sorbitan sesquioleate, PEG-7 hydrogenated castor oil, methyl glucose oleate, or a combination thereof, further wherein the low HLB emulsifier is present in total amounts of from 1 to 15%, preferably, from 1.5 to 10%, by weight of the personal care liquid concentrate composition.

13. The personal care liquid concentrate composition according to any of the preceding claims, wherein the weight ratio of high HLB emulsifier to low HLB emulsifier is from 55:45 to 20:80, preferably, from 50:50 to 20:80.

14. The personal care liquid concentrate composition according to any of the preceding claims, wherein the personal care liquid concentrate composition has a viscosity ranging from 2,000 to 9,950 mPa s, preferably, from 3,000 to 9,950 mPa s, when measured after 18 to 24 hours at RV6 and 20 rpm at from 20°C to 25°C.

15. A personal care end use composition prepared by: a) hydrating with water a flowable personal care liquid concentrate composition with a viscosity ranging from 2,000 to 10,000 mPa s when measured after 18 to 24 hours at RV6 and 20 rpm at from 20°C to 25°C and comprising: i) a polyol, ii) from 20 to 65% aqueous liquid by weight of the personal care liquid concentrate composition, iii) from 1 to 10% of at least one acrylic acid-based polymer by weight of the personal care liquid concentrate composition, and iv) a surfactant blend consisting essentially of nonionic emulsifiers having1) from 2 to 20% by weight at least one high HLB emulsifier having an HLB value greater than or equal to 9 and a melting point that is lower than 38°C, and2) from 1 to 15% by weight at least one low HLB emulsifier having an HLB value less than or equal to 8 and a melting point that is lower than 38°C; b) mixing the personal care liquid concentrate composition with the water in under 5 minutes with shear and / or agitation; and c) recovering the personal care end use composition,P0000741WO Completion26 wherein the personal care end use composition has a viscosity of at least 2,000 mPa s, preferably, from 2,000 mPa s to 60,000 mPa s.

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