Composition for cleansing and / or removing makeups from keratin materials
The composition of amphoteric surfactants, acrylates copolymers, and higher concentrations of whitening actives with a pH of 7 or higher addresses the stability and foaming challenges in cosmetic cleansing products, enhancing both cleansing and foaming performance.
Patent Information
- Application Number
- PCT/CN2023/137016
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2025-06-12
AI Technical Summary
Current cosmetic cleansing products face challenges in maintaining stability and foaming performance when incorporating higher amounts of whitening actives, which can lead to undesirable rheology and foaming issues.
A composition comprising at least one amphoteric surfactant, one acrylates copolymer, and an amount of 0.3 wt.% or more of a whitening active, with a pH value of 7 or higher, is used to improve stability, rheology, and foaming performance.
The composition achieves improved stability, rheology, and foaming performance, even with higher concentrations of whitening actives, ensuring effective cleansing and makeup removal from keratin materials.
Smart Images

Figure PCTCN2023137016-FTAPPB-I100001 
Figure PCTCN2023137016-FTAPPB-I100002 
Figure PCTCN2023137016-FTAPPB-I100003
Abstract
Description
COMPOSITION FOR CLEANSING AND / OR REMOVING MAKEUPS FROM KERATIN MATERIALSTECHNICAL FIELD
[0001] The present invention relates to a composition for cleansing and / or removing makeups from keratin materials, and also relates to a process for cleansing and / or removing makeups from keratin materials.BACKGROUND ART
[0002] Cleansing the skin is very important, especially for caring for the face. It must be as efficient as possible because greasy residues, such as dirt, excess sebum, and remnants of cosmetic products used daily, and make-up products can result in an unpleasant oily appearance. Moreover, nowadays it has become more and more important that cleansing compositions provide effective cleansing of the keratin materials as well as pleasant performances, e.g., good foaming performance.
[0003] For the current cosmetic products, including cleansing products, a whitening efficacy is becoming more and more attractive for both men and women customers. Thus, the artisans intend to add one or more whitening actives, especially a relatively higher amount of the whitening actives, when formulating the cosmetic products. However, these whitening actives, especially a relatively higher amount of the whitening actives, may lead to instability and / or an undesirable rheology performance, and further lead to an undesirable foaming performance.
[0004] Therefore, there is a need for a composition for cleansing and / or removing makeups from keratin materials comprising a relatively higher amount of a whitening active, which can provide improved stability, rheology performance and / or further foaming performance.SUMMARY OF THE INVENTION
[0005] The inventors have found that such a need can be achieved by the composition according to the present invention.
[0006] According to a first aspect, the present invention relates to a composition, especially for cleansing and / or removing makeups from keratin materials, comprising:
[0007] a) at least one amphoteric surfactant,
[0008] b) at least one acrylates copolymer, and
[0009] c) an amount of 0.3 wt. %or more of at least one whitening active, relative to the total weight of the composition,
[0010] wherein the composition has a pH value of 7 or higher.
[0011] According to a second aspect, the present invention relates to a combination for improving foaming performance of a composition comprising at least one whitening active, comprising, consisting essentially of, or even consisting of at least one amphoteric surfactant and at least one acrylates copolymer. In some instances, the composition comprises an amount of 0.3 wt. %or more of at least one whitening active, relative to the total weight of the composition.
[0012] According to a third aspect, the present invention relates to a process for cleansing and / or removing makeups from keratin materials, comprising applying a composition according to the first aspect onto the keratin materials.
[0013] According to a fourth aspect, the present invention relates to use of a combination of at least one amphoteric surfactant and at least one acrylates copolymer for improving foaming performance of a composition comprising at least one whitening active. In some instances, the composition comprises an amount of 0.3 wt. %or more of a whitening active, relative to the total weight of the composition.
[0014] Other subjects and characteristics, aspects and advantages of the present invention will emerge even more clearly on reading the detailed description and the examples that follow.DETAILED DESCRIPTION OF THE INVENTION
[0015] In that which follows and unless otherwise indicated, the limits of a range of values are included within this range, in particular in the expressions “of between” and “ranging from... to... ” .
[0016] The articles “a” and “an” , as used herein, mean one or more when applied to any feature in embodiments of the present invention described in the specification and claims. The use of “a” and “an” does not limit the meaning to a single feature unless such a limit is specifically stated. Moreover, the expression “at least one” used in the present description is equivalent to the expression “one or more” .
[0017] Throughout the present application, the expression “comprising” is to be interpreted as encompassing all specifically mentioned features as well optional, additional, unspecified ones. As used herein, the use of the term “comprising” also discloses the embodiment wherein no material features or even no features other than the specifically mentioned features are present (such as “consisting essentially of” and “consisting of” ) . In the case of “consisting essentially of, ” any additional compositions, materials, and / or components that materially affect the basic and novel characteristics are excluded from such an embodiment, but any compositions, materials and / or components that do not materially affect the basic and novel characteristics can be included in the embodiment.
[0018] Unless otherwise specified, all numerical values expressing amount of ingredients and the like used in the description and claims are to be understood as being modified by the term “about” . Accordingly, unless indicated to the contrary, the numerical values and parameters described herein are approximate values which are capable of being changed according to the desired performance obtained as required. The term “about” denoting a certain value is intended to denote a range within±5%of the value, e.g., ±3%, ±2%, ± 1%, and ± 0.5%of the value.
[0019] As used herein, the term “keratin material (s) ” refers to the skin and the lip. By “skin” , it includes all the body skins, including the scalp. Preferably, the keratin material (s) means the skin.
[0020] Amphoteric surfactant
[0021] The composition according to the present invention comprises at least one amphoteric surfactant.
[0022] Useful amphoteric surfactants include betaines, sultaines, alkyl amphoacetates and alkyl amphodiacetates, alkyl amphopropionates, and mixtures thereof. Non-limiting examples of useful amphoteric surfactants are provided below.
[0023] Betaines
[0024] According to the present invention, the betaines include the compounds having the following Formulae (Ia-Ic) :
[0025] wherein R10 is an alkyl group having 7-18 carbon atoms; and n is an integer from 1 to 3.
[0026] Useful betaines include, but are not limited to, coco betaine, cocamidopropyl betaine, lauryl betaine, lauryl dimethyl betaine, behenyl betaine, capryl / capramidopropyl betaine, stearyl betaine, and mixtures thereof. According to the present invention, preferred betaines include coco betaine, cocamidopropyl betaine and a mixture thereof.
[0027] Sultaines
[0028] According to the present invention, the sultaines, also referred to as sulfobetaines, include the compounds having the following Formulae (IIa-IIb)
[0029] wherein R is an alkyl group having 7-18 carbon atoms; and n is an integer from 1 to 3.
[0030] According to the present invention, preferred sultaines include cocamidopropyl hydroxysultaine, lauryl hydroxysultaine or laurylhydroxy sulfobetaine, and mixtures thereof.
[0031] Alkyl amphoacetates and alkyl amphodiacetates
[0032] According to the present invention, the alkyl amphoacetates and alkyl amphodiacetates include the compounds having the following Formula (IIIa) and (IIIb) :
[0033] wherein R is an alkyl group having 7-18 carbon atoms. Sodium is shown as the cation in the above formulae, but the cation may also be an alkali metal ion such as sodium or potassium, ammonium ions, or alkanolammonium ions such as monoethanolammonium or triethanolammonium ions. A more specific, but non-limiting example, is sodium lauroamphoacetate.
[0034] Alkyl amphopropionates
[0035] Non-limiting examples of alkyl amphopropionates include cocoamphopropionate, cornamphopropionate, caproamphopropionate, oleoamphopropionate, isostearoamphopropionate, stearoamphopropionate, lauroamphopropionate, salts thereof, and mixtures thereof.
[0036] Preferably, the amphoteric surfactant is chosen from betaines, wherein the betaine is more preferably selected from coco betaine, cocamidopropyl betaine, behenyl betaine, capryl / capramidopropyl betaine, lauryl betaine, and mixtures thereof. Even more preferred betaines include coco betaine, cocamidopropyl betaine and a mixture thereof.
[0037] Advantageously, the amphoteric surfactant is present in an amount ranging from 0.01 wt. %to 20 wt. %, preferably from 0.5 wt. %to 10 wt. %, and more preferably from 3 wt. %to 5 wt. %, relative to the total weight of the composition.
[0038] Acrylates copolymer
[0039] The composition according to the present invention comprises at least one acrylates copolymer.
[0040] In some instances, the acrylates copolymer is a crosslinked copolymer of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having less than 6 carbon atoms, preferably a C1-C4 alkyl ester.
[0041] Mention may be made the copolymer sold under the commercial name ACULYN by the company THE DOW CHEMICAL COMPANY and having the INCI name: Acrylates Copolymer.
[0042] In some instances, the acrylates copolymer is a crosslinked copolymer of methacrylic acid and of a C1-C4 alkyl acrylate.
[0043] The methacrylic acid is preferably present in an amount ranging from 20 wt. %to 80 wt.%, preferably from 25 wt. %to 70 wt. %and more preferably from 35 wt. %to 65 wt. %, relative to the total weight of the copolymer.
[0044] The alkyl acrylate is preferably present in an amount ranging from 15 wt. %to 80 wt. %, preferably from 25 wt. %to 75 wt. %and more preferably from 35 wt. %to65 wt. %, relative to the total weight of the copolymer. It is chosen preferably from methyl acrylate, ethyl acrylate and butyl acrylate and more preferably ethyl acrylate.
[0045] This copolymer is preferably partially or totally crosslinked with at least one standard polyethylenically unsaturated crosslinking agent, for instance polyalkenyl ethers of sucrose or of polyols, diallyl phthalates, divinylbenzene, allyl (meth) acrylate, ethylene glycol di (meth) acrylate, methylenebisacrylamide, trimethylolpropane tri (meth) acrylate, diallyl itaconate, diallyl fumarate, diallyl maleate, zinc (meth) acrylate, and castor oil or polyol derivatives manufactured from unsaturated carboxylic acids. The content of crosslinking agent generally ranges from 0.01 wt. %to 5 wt. %, preferably from 0.03 wt. %to 3 wt. %and more preferably from 0.05 wt. %to 1 wt. %, relative to the total weight of the copolymer.
[0046] According to one preferred form, the copolymer of the present invention may especially be in the form of a dispersion in water. The mean size of the copolymer particles in the dispersion is generally between 10 and 500 nm, preferably between 20 and 200 nm, and more preferably from 50 to 150 nm.
[0047] Mention may be made the methacrylic acid / ethyl acrylate crosslinked copolymer sold by the company LUBRIZOL under the trade name Carbopol Aqua SF1 and having the INCI name: Acrylates Copolymer.
[0048] Advantageously, the acrylates copolymer is present in an amount ranging from 0.01 wt. %to 20 wt. %, preferably from 0.1 wt. %to 5 wt. %, and more preferably from 1 wt. %to 3 wt. %, relative to the total weight of the composition.
[0049] Whitening active
[0050] The composition of the present invention comprises an amount of 0.3 wt. %or more of at least one whitening active, relative to the total weight of the composition.
[0051] Useful whitening actives include Vitamin B3 and derivatives thereof, ascorbic acid and derivatives thereof, resorcinol derivatives, C-glycoside derivatives, salicylic acid and derivatives thereof, kojic acid and derivatives thereof, tranexamic acid and derivatives thereof, flavonoids (including baicalin) , hydroxylated diphenylmethane derivatives, skin tone changing pigments, and mixtures thereof.
[0052] Preferably, the whitening actives include Vitamin B3 and derivatives thereof, skin tone changing pigments, and mixtures thereof.
[0053] Mention may be made of Vitamin B3 and derivatives thereof. Vitamin B3, also called vitamin PP, is a compound of the following formula (IV) :
[0054] in which R may be-CONH2 (niacinamide) , -COOH (nicotinic acid or niacin) , or-CH2OH (nicotinyl alcohol) , -CO-NH-CH2-COOH (nicotinuric acid) or-CO-NH-OH (nicotinyl hydroxamic acid) . Niacinamide is preferable.
[0055] Vitamin B3derivatives that may be mentioned include, for example, nicotinic acid esters such as tocopherol nicotinate, amides derived from niacinamide by substitution of the hydrogen groups of-CONH2, products from reaction with carboxylic acids and amino acids, esters of nicotinyl alcohol and of carboxylic acids such as acetic acid, salicylic acid, glycolic acid or palmitic acid.
[0056] Mention may also be made of the following derivatives: 2-chloronicotinamide, 6-methylnicotinamide, 6-aminonicotinamide, N-methylnicotinamide, N, N-dimethylnicotinamide, N- (hydroxymethyl) nicotinamide, quinolinic acid imide, nicotinanilide, N-benzylnicotinamide, N-ethylnicotinamide, nifenazone, nicotinaldehyde, isonicotinic acid, methylisonicotinic acid, thionicotinamide, nialamide, 2-mercaptonicotinic acid, nicomol and niaprazine, methyl nicotinate and sodium nicotinate.
[0057] Other vitamin B3 derivatives that may also be mentioned include its inorganic salts, such as chlorides, bromides, iodides or carbonates, and its organic salts, such as the salts obtained by reaction with carboxylic acids, such as acetate, salicylate, glycolate, lactate, malate, citrate, mandelate, tartrate, etc.
[0058] The skin tone changing pigments include but not limited to talc, mica, silica, titanium dioxide, zinc dioxide and titanium dioxide coated mica, borosilicates, hydrophobically modified zinc dioxides, hydrophobically modified titanium dioxides, and composites of titanium-zinc dioxides. Preferably, the skin tone changing pigment is titanium dioxide.
[0059] Preferably, the whitening active comprised in the composition of the present invention is chosen from niacinamide, titanium oxide and a mixture thereof. More preferably, said whitening active includes both niacinamide and titanium oxide.
[0060] Advantageously, the whitening active is present in an amount ranging from 0.3 wt. %to 5 wt. %, preferably from 0.3 wt. %to 3 wt. %, and more preferably from 0.3 wt. %to 1 wt. %, relative to the total weight of the composition.
[0061] Aqueous solvent
[0062] The composition of the present invention may comprise at least one aqueous solvent.
[0063] Preferably, the aqueous solvent of the composition according to the present invention comprises water.
[0064] In some instances, in addition to water, the aqueous solvent further comprises one or more water-miscible or at least partially water-miscible compounds, for instance C2-C6 polyols, or monoalcohols, such as ethanol and isopropanol.
[0065] The term “polyol” should be understood as meaning any organic molecule comprising at least two free hydroxyl groups. Examples of polyols that may be mentioned include glycols, for instance butylene glycol, propylene glycol, dipropylene glycol, isoprene glycol, hexylene glycol, glycerol (i.e., glycerin) and polyethylene glycols.
[0066] Preferably, the composition according to the present invention comprises water.
[0067] Advantageously, water is present in an amount ranging from 20 wt. %to 90 wt. %, and preferably from 30 wt. %to 80 wt. %, relative to the total weight of the composition.
[0068] Additional ingredients
[0069] The composition according to the present invention may comprise one or more additional ingredients, selected from those conventionally used in cosmetic products.
[0070] The composition in accordance with the present invention may comprise any of the following additives: pH adjusting agents, fragrances, and chelating agents.
[0071] A person skilled in the art can adjust the type and amount of the additional ingredients present in the compositions according to the present invention by means of routine operations, so that the desired properties of these compositions are not adversely affected by the additional ingredients.
[0072] Combination
[0073] According to the present invention, the present invention also relates to a combination for improving foaming performance of a composition comprising at least one whitening active, comprising, consisting essentially of, or even consisting of at least one amphoteric surfactant and at least one acrylates copolymer, wherein the amphoteric surfactant, the acrylates copolymer and the whitening active are defined above.
[0074] In some instances, the composition comprises an amount of 0.3 wt. %or more, or 0.3 wt. %to 5 wt. %, or 0.4 wt. %to 5 wt. %, or 0.5 wt. %to 5 wt. %, or 0.3 wt. %to 4 wt. %, or 0.4 wt. %to 3 wt. %, or 0.5 wt. %to 2 wt. %or 0.3 wt. %to 1 wt. %of at least one whitening active, relative to the total weight of the composition.
[0075] In some instances, the composition has a pH value of 7 or higher. In some embodiments, the composition has a pH value of 7 to 10, preferably 7.5 to 10.
[0076] In some instances, the weight ratio of the amphoteric surfactant to the acrylates copolymer ranges from 0.8 to 5, or from 1 to 3, or from 1.2 to 2.
[0077] In one preferred embodiment, the present invention relates to a combination for improving foaming performance of a composition comprising at least one whitening active, consisting essentially of or consisting of at least one amphoteric surfactant and at least one acrylates copolymer with a weight ratio ranging from 0.8 to 5, wherein the composition preferably has a pH value of 7 to 10, preferably 7.5 to 10, and preferably comprises an amount of 0.3 wt. %or more of at least one whitening active, relative to the total weight of the composition.
[0078] In one preferred embodiment, the present invention relates to a combination for improving foaming performance of a composition comprising at least one whitening active chosen from Vitamin B3 and derivatives thereof, skin tone changing pigments, and mixtures thereof, consisting essentially of or consisting of at least one betaine and at least one acrylates copolymer with a weight ratio ranging from 1 to 3,
[0079] wherein the acrylates copolymer is a crosslinked copolymer of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having less than6 carbon atoms, preferably a C1-C4 alkyl ester, or a crosslinked copolymer of methacrylic acid and of a C1-C4 alkyl acrylate, and wherein the composition preferably has a pH value of 7 to 10, preferably 7.5 to 10, and preferably comprises an amount of 0.3 wt. %to 3 wt. %of at least one whitening active, relative to the total weight of the composition.
[0080] In one preferred embodiment, the present invention relates to a combination for improving foaming performance of a composition comprising at least one whitening active chosen from niacinamide, titanium oxide and a mixture thereof, consisting essentially of or consisting of coco betaine and acrylates copolymer with a weight ratio ranging from 1.2 to 2, wherein the composition preferably has a pH value of 7, 7.5, 8, 8.5, 9, 9.5 or 10, and preferably comprises an amount of 0.3 wt. %to 1 wt. %of at least one whitening active, relative to the total weight of the composition.
[0081] Composition
[0082] The composition according to the present invention may be a cosmetic composition, preferably for cleansing and / or removing makeups from keratin materials, and especially the skin.
[0083] According to the present invention, the composition comprising the above components may be in the form of a lotion, a paste, a cream, or a gel, and especially in the form of a gel.
[0084] According to the present invention, the composition has a pH value of 7 or higher. Preferably, the composition according to the present invention has a pH value of 7 to 10, preferably 7.5 to 10, e.g., a pH value of 7, 7.5, 8, 8.5, 9, 9.5 or 10.
[0085] By means of a pH value of 7 or higher, the composition according to the present invention can provide improved foaming and / or cleansing performances.
[0086] According to the present invention, the viscosity of the composition is measured at 25℃ and atmospheric pressure using a Rheomat apparatus equipped with M3 spindle at a rotation speed of 200 rpm after 10minutes of rotation of the spindle in the samples. The corresponding value in UD (unit deflection) can be converted to mPa·s, wherein 1 UD≈42 mPa·s.
[0087] In some instances, the weight ratio of the amphoteric surfactant to the acrylates copolymer ranges from 0.8 to 5, or from 1 to 3, or from 1.2 to 2.
[0088] In one embodiment, the present invention relates to a composition for cleansing and / or removing makeups from keratin materials, relative to the total weight of the composition, comprising:
[0089] a) an amount of 0.5 wt. %to 10 wt. %of at least one amphoteric surfactant,
[0090] b) an amount of 0.1 wt. %to 5 wt. %of at least one acrylates copolymer, and
[0091] c) an amount of 0.3 wt. %to 3 wt. %of an at least one whitening active,
[0092] wherein the composition has a pH value of 7 to 10, preferably 7.5 to 10.
[0093] In one preferred embodiment, the present invention relates to a composition for cleansing and / or removing makeups from keratin materials, relative to the total weight of the composition, comprising:
[0094] a) an amount of 0.5 wt. %to 10 wt. %of at least one betaine,
[0095] b) an amount of 0.1 wt. %to 5 wt. %of at least one acrylates copolymer chosen from a crosslinked copolymer of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having less than 6 carbon atoms, preferably a C1-C4 alkyl ester, or a crosslinked copolymer of methacrylic acid and of a C1-C4 alkyl acrylate,
[0096] c) an amount of 0.3 wt. %to 3 wt. %of at least one whitening active chosen from Vitamin B3 and derivatives thereof, skin tone changing pigments, and mixtures thereof, and
[0097] d) an amount of 20 wt. %to 90 wt. %of water,
[0098] wherein the composition has a pH value of 7 to 10, preferably 7.5 to 10.
[0099] In one preferred embodiment, the present invention relates to a composition for cleansing and / or removing makeups from keratin materials, relative to the total weight of the composition, comprising:
[0100] a) 3 wt. %to 5 wt. %of coco betaine,
[0101] b) 1 wt. %to 3 wt. %of acrylates copolymer,
[0102] c) 0.3 wt. %to 1 wt. %of at least one whitening active chosen from niacinamide, titanium dioxide, and a mixture thereof, and
[0103] d) 30 wt. %to 80 wt. %of water,
[0104] wherein the composition has a pH value of 7 to 10, preferably 7.5 to 10, e.g., a pH value of 7, 7.5, 8, 8.5, 9, 9.5 or 10.
[0105] By means of the components of an amphoteric surfactant, an acrylates copolymer, and a relatively higher amount of a whitening active and the pH value of 7 or higher, the composition comprising the same can obtains improved stability and rheology performance, and / or further foaming performance.
[0106] Process and use
[0107] The composition according to the present invention can be used in a process for cleansing and / or removing makeups from keratin materials, such as the skin, by being applied onto the keratin materials.
[0108] The composition according to the invention may be applied by any means enabling a uniform distribution, preferably using a finger, a palm, or a cotton ball, and can be removed by rinsing with water.
[0109] According to a third aspect, the present invention relates to a process for cleansing and / or removing makeups from keratin materials, preferably the skin, comprising applying the above composition onto the keratin materials.
[0110] In some instances, the process further comprises rinsing off the composition with water.
[0111] Preferably, the process further comprises massaging the keratin materials for 2 seconds to 60 seconds before rinsing off the composition.
[0112] According to a fourth aspect, the present invention relates to use of a combination of at least one amphoteric surfactant and at least one acrylates copolymer for improving foaming performance of a composition comprising at least one whitening active, wherein the amphoteric surfactant, the acrylates copolymer and the whitening active are defined above, and wherein the composition preferably comprises an amount of 0.3 wt. %or more of at least one whitening active, relative to the total weight of the composition.
[0113] Preferably, the amphoteric surfactant is chosen from betaines, and more preferably coco betaine.
[0114] Preferably, the acrylates copolymer is chosen from a crosslinked copolymer of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having less than 6 carbon atoms, preferably a C1-C4 alkyl ester, a crosslinked copolymer of methacrylic acid and of a C1-C4 alkyl acrylate and mixtures thereof.
[0115] Preferably, the weight ratio of the amphoteric surfactant to the acrylates copolymer ranges from 0.8 to 5, or from 1 to 3, or from 1.2 to 2.
[0116] Preferably, the whitening active is preferably chosen from Vitamin B3 and derivatives thereof, skin tone changing pigments, and mixtures thereof, more preferably chosen from niacinamide, titanium dioxide, and a mixture thereof; and is preferably present in an amount ranging from 0.3 wt. %to 3 wt. %, and more preferably from 0.3 wt. %to 1 wt. %, relative to the total weight of the composition.
[0117] Preferably, the composition has a pH value of 7 to 10, preferably 7.5 to 10, e.g., a pH value of 7, 7.5, 8, 8.5, 9, 9.5 or 10.
[0118] The present invention is illustrated in greater detail by the examples described below, which are given as non-limiting illustrations.
[0119] EXAMPLES
[0120] Main raw materials used, trade names and suppliers thereof were listed in Table 1.
[0121] Table 1
[0122] Comparative Examples 1-3 and Inventive Examples 1-3
[0123] The compositions according to comparative examples (CE. ) 1-3 and inventive examples (Ex. ) 1-3 comprising the ingredients shown in Table 2 were prepared, wherein all amounts were expressed by percentages by weight of active matter with regard to the total weight of each composition.
[0124] Table 2
[0125] Preparation process
[0126] The compositions were prepared from a process comprising the following steps:
[0127] 1) . mixing whitening active and acrylates copolymer (if present) with water to form Premix1, and then adjusting pH value of Premix 1 to 9 using sodium hydroxide; and
[0128] 2) . adding amphoteric surfactant (if present) into Premix1 to form the final composition.
[0129] Test of stability
[0130] For each composition of Inventive Examples 1-3 and Comparative Examples 1-3, the stability was tested by being stored at RT, 4℃, 37℃, and 45℃ for 2 months respectively.
[0131] Test of viscosity
[0132] For each composition of Inventive Examples 1-3 and Comparative Examples 1-3, the viscosity was measured at 25℃ and atmospheric pressure using a Rheomat apparatus equipped with M3 spindle at a rotation speed of 200 rpm after 10 minutes of rotation of the spindle in the composition.
[0133] Test of foaming performance
[0134] Preparation procedure:
[0135] 1) taking 0.5 ml of each composition to be tested with a syringe, and 2 x 1 ml of water with pipettes;
[0136] 2) rinsing hands under tap water for 2 seconds and placing 0.5 ml of each composition onto palm (s) with a syringe, then adding 1ml of water with one pipette;
[0137] 3) making back and forth movements for 20 rounds (2 circles / second) and pausing to gather foams in the palm (s) to prevent the foams from flowing if necessary;
[0138] 4) adding 1 ml of water with one pipette again, and making back and forth movements for 20 rounds (2 circles / second) , and pausing to gather foams in the palm (s) to prevent foams from flowing if necessary; and
[0139] 5) putting together all the foams in one palm.
[0140] Foaming performance was evaluated by the volume of the foams obtained at the end of rubbing hands (40 rounds) . The scores of 1-5 were given. The higher of the score, the better the foaming performance was.
[0141] Score 5: very large;
[0142] Score 4: slightly large;
[0143] Score 3: common;
[0144] Score 2: slightly small;
[0145] Score 1: small.
[0146] The results of the stability, viscosity and foaming performance were shown in Table 3.
[0147] Table 3
[0148] From Table 3, it can be seen that only the compositions of the Inventive Examples 1-3, comprising an amount of 0.3 wt. %or more of one or more whitening active, an amphoteric surfactant and an acrylates copolymer and having a relatively higher pH value, e.g., 9, can bring desirable stability, rheology performance and further improved foaming performance.
[0149] By contrast, each of the compositions of the Comparative Examples 1-3, which does not comprise an amphoteric surfactant or an acrylates copolymer, cannot obtain desirable rheology and foaming performances, and / or is not stable after being stored for 2 months at different temperatures and / or only stable at room temperature.
Claims
1.A composition, especially for cleansing and / or removing makeups from keratin materials, comprising:a) at least one amphoteric surfactant,b) at least one acrylates copolymer, andc) an amount of 0.3 wt. %or more of at least one whitening active, relative to the total weight of the composition,wherein the composition has a pH value of 7 or higher.2.The composition according to claim 1, wherein the amphoteric surfactant is chosen from betaines, sultaines, alkyl amphoacetates and alkyl amphodiacetates, alkyl amphopropionates, and mixtures thereof, and preferably betaines.3.The composition according to claim 2, wherein the amphoteric surfactant is selected from the group consisting of coco betaine, cocamidopropyl betaine, behenyl betaine, capryl / capramidopropyl betaine, lauryl dimethyl betaine, lauryl betaine, stearyl betaine, and mixtures thereof, and is preferably coco betaine.4.The composition according to any one of the preceding claims, wherein the acrylates copolymer is selected from a crosslinked copolymer of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having less than 6 carbon atoms, preferably a C1-C4 alkyl ester; a crosslinked copolymer of methacrylic acid and of a C1-C4 alkyl acrylate chosen from methyl acrylate, ethyl acrylate and butyl acrylate; and mixtures thereof.5.The composition according to any one of the preceding claims, wherein the whitening active is selected from the group consisting of Vitamin B3 and derivatives thereof, ascorbic acid and derivatives thereof, resorcinol derivatives, C-glycoside derivatives, salicylic acid and derivatives thereof, kojic acid and derivatives thereof, tranexamic acid and derivatives thereof, flavonoids (including baicalin) , hydroxylated diphenylmethane derivatives, skin tone changing pigments, and mixtures thereof, and is preferably chosen from Vitamin B3 and derivatives thereof, skin tone changing pigments, and mixtures thereof.6.The composition according to claim 5, wherein the skin tone changing pigment is selected from the group consisting of talc, mica, silica, titanium dioxide, zinc dioxide and titanium dioxide coated mica, borosilicates, hydrophobically modified zinc dioxides, hydrophobically modified titanium dioxides, composites of titanium-zinc dioxides, and mixtures thereof, and is preferably titanium dioxide; and / or the Vitamin B3 and derivatives thereof is chosen from niacinamide.7.The composition according to any one of the preceding claims, further comprising at least one aqueous solvent including water, wherein water is present in an amount ranging from 20 wt. %to 90 wt. %, and preferably from 30 wt. %to 80 wt. %, relative to the total weight of the composition.8.The composition according to any one of the preceding claims, wherein the amphoteric surfactant is present in an amount ranging from 0.01 wt. %to 20 wt. %, preferably from 0.5 wt. %to 10 wt. %, and more preferably from 3 wt. %to 5 wt. %, relative to the total weight of the composition.9.The composition according to any one of the preceding claims, wherein the acrylates copolymer is present in an amount ranging from 0.01 wt. %to 20 wt. %, preferably from 0.1 wt. %to 5 wt. %, and more preferably from 1 wt. %to 3 wt. %, relative to the total weight of the composition.10.The composition according to any one of the preceding claims, wherein the whitening active is present in an amount ranging from 0.3 wt. %to 5 wt. %, preferably from 0.3 wt. %to 3 wt. %, and more preferably from 0.3 wt. %to 1 wt. %, relative to the total weight of the composition.11.The composition according to any one of the preceding claims, wherein the composition has a pH value of 7 to 10, preferably 7.5 to 10.12.A composition for cleansing and / or removing makeups from keratin materials, relative to the total weight of the composition, comprising:a) an amount of 0.5 wt. %to 10 wt. %, preferably 3 wt. %to 5 wt. %, of at least one betaine, preferably coco betaine,b) an amount of 0.1 wt. %to 5 wt. %, preferably 1 wt. %to 3 wt. %, of at least one acrylates copolymer, preferably a crosslinked copolymer of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having less than 6 carbon atoms, preferably a C1-C4 alkyl ester, or a crosslinked copolymer of methacrylic acid and of a C1-C4 alkyl acrylate,c) an amount of 0.3 wt. %to 3 wt. %, preferably 0.3 wt. %to 1 wt. %, of at least one whitening active chosen from Vitamin B3 and derivatives thereof, skin tone changing pigments, and mixtures thereof, preferably chosen from niacinamide, titanium dioxide, and a mixture thereof, andd) an amount of 20 wt. %to 90 wt. %, preferably 30 wt. %to 80 wt. %, of water,wherein the composition has a pH value of 7 to 10, preferably 7.5 to 10.13.A combination for improving foaming performance of a composition comprising at least one whitening active, comprising, consisting essentially of, or even consisting of at least one amphoteric surfactant and at least one acrylates copolymer,wherein the amphoteric surfactant is chosen from betaines, preferably coco betaine;wherein the acrylates copolymer is a crosslinked copolymer of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having less than 6 carbon atoms, preferably a C1-C4 alkyl ester, or a crosslinked copolymer of methacrylic acid and of a C1-C4 alkyl acrylate;wherein the whitening active is chosen from Vitamin B3 and derivatives thereof, skin tone changing pigments, and mixtures thereof;wherein the weight ratio of the amphoteric surfactant to the acrylates copolymer ranges from 0.8 to 5, or from 1 to 3, or from 1.2 to 2;wherein the composition has a pH value of 7 to 10, preferably 7.5 to 10; and / orwherein the composition comprises an amount of 0.3 wt. %or more, preferably 0.3 wt. %to 3 wt. %, more preferably 0.3 wt. %to 1 wt. %of at least one whitening active, relative to the total weight of the composition.14.A process for cleansing and / or removing makeups from keratin materials, comprisinga) applying a composition according to any one of claims 1-12 onto the keratin materials,b) massaging the keratin materials for 2 seconds to 60 seconds, andc) rinsing off the composition with water.15.Use of a combination of at least one amphoteric surfactant and at least one acrylates copolymer for improving foaming performance of a composition comprising at least one whitening active,wherein the amphoteric surfactant is chosen from betaines, preferably coco betaine;wherein the acrylates copolymer is a crosslinked copolymer of acrylic acid and / or methacrylic acid and of an ester thereof comprising a hydrocarbyl group having less than 6 carbon atoms, preferably a C1-C4 alkyl ester, or a crosslinked copolymer of methacrylic acid and of a C1-C4 alkyl acrylate;wherein the whitening active is chosen from Vitamin B3 and derivatives thereof, skin tone changing pigments, and mixtures thereof;wherein the weight ratio of the amphoteric surfactant to the acrylates copolymer ranges from 0.8 to 5, preferably from 1 to 3, more preferably from 1.2 to 2;wherein the composition has a pH value of 7 to 10, preferably 7.5 to 10; and / orwherein the composition comprises an amount of 0.3 wt. %or more, preferably 0.3 wt. %to 3 wt. %, more preferably 0.3 wt. %to 1 wt. %of at least one whitening active, relative to the total weight of the composition.
Citation Information
Patent Citations
Liquid cleansing composition comprising at least one anionic surfactant and its use for cleansing human keratin materials
US20060135397A1
Liquid personal cleansing composition
US20110118162A1
Foaming cleanser
US20170196780A1
Composition for cleansing keratin materials with improved rinsing properties
US20180333344A1
Composition for washing keratin materials, based on a detergent surfactant, a nacreous and / or opacifying agent and an acrylic terpolymer
US6562772B1