Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
  • A61K8/42—Amides
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
  • A61K8/06—Emulsions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/34—Alcohols
  • A61K8/342—Alcohols having more than seven atoms in an unbroken chain
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
  • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
  • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
  • A61K8/463—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
  • A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/002—Preparations for repairing the hair, e.g. hair cure
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/12—Preparations containing hair conditioners
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
  • A61K2800/30—Characterized by the absence of a particular group of ingredients
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/59—Mixtures
  • A61K2800/596—Mixtures of surface active compounds

Definitions

• the present invention relates to the use as an agent for conditioning keratin fibers of a surfactant composition containing at least one ester or amide salt of glycine betaine comprising from 14 to 24 carbon atoms. It also relates to a process for conditioning keratin fibers, comprising the topical application to the keratin fibers of a cosmetic composition in the form of an emulsion containing, in a cosmetically acceptable medium, a surfactant composition as defined above.
• hair which has been sensitized, in particular damaged and / or weakened, to varying degrees under the action of atmospheric agents or under the action of mechanical and / or chemical treatments, such as coloring, discolorations and perms are often difficult to disentangle, they lack discipline and their styling and shaping are particularly difficult. They may also lack shine, as their surface can be altered and can therefore reflect light less evenly.
• hair care compositions may be conditioning shampoos or conditioners which may be in the form of gels, hair lotions or more or less thick creams containing conditioning agents intended mainly to repair or limit the harmful or undesirable effects. induced by the various treatments or attacks to which the hair fibers are subjected more or less repeatedly.
• Hair treatment compositions have already been proposed comprising cationic polymers and / or cationic surfactants as conditioning agents. These compounds are deposited on the hair and make it possible to improve the condition of the fibers and thus their cosmetic properties.
• This two-step process results in a complex surfactant composition containing, in addition to long-chain glycine betaine ester salts, corresponding shorter-chain esters, comprising a maximum of six carbon atoms, in a proportion always greater than 15% by weight. , as well as cationized alkylpolyglycosides.
• the composition obtained can in particular be used in the preparation of hair care products, in particular of a detangling spray.
• the subject of the invention is the use as an agent for conditioning keratin fibers of a surfactant composition containing at least one glycine betaine derivative of formula (1): X n [(CH3) 3N + -CH2-COZ-R] n where Z denotes an oxygen atom or a -NH group, R is a linear or branched, saturated or unsaturated alkyl group comprising from 14 to 24 carbon atoms, X is an organic or inorganic anion, and n is 1 or 2.
• the present invention relates to the application for conditioning keratin fibers of a surfactant composition based on at least one glycine betaine derivative, which is a long-chain glycine betaine ester or amide salt.
• the glycine betaine ester salts can be obtained according to a process comprising the successive steps consisting in:
• the first step in this process is to esterify glycine betaine, or trimethylglycine.
• Glycine betaine can be of plant or synthetic origin. It is necessary to protonate it beforehand using an organic or inorganic acid, insofar as it is in zwitterionic form (presence of a carboxylate function).
• the acid can in particular be chosen from inorganic acids such as hydrochloric acid, sulfuric acid, perhalohydric acids, such as perchloric acid, and mixtures thereof.
• alkyl sulfuric acids for example decyl or lauryl sulfuric acid
• arylsulfonic acids such as benzenesulfonic acid, paratoluenesulfonic acid
• alkylsulfonic acids such as triflic acid, methanesulfonic acid, ethanesulfonic acid, decylsulfonic acid, laurylsulfonic or camphosulfonic acid
• sulfosuccinic acid and their mixtures.
• Lewis acids can also be used.
• it is an alkylsulfonic acid and in particular ethanesulfonic acid, insofar as it is easily biodegradable, or methanesulfonic acid.
• fatty alcohol is meant a linear or branched (preferably linear), saturated or unsaturated alcohol comprising from 14 to 24 carbon atoms.
• fatty alcohols can be chosen from the group consisting of: myristic alcohol (04: 0), cetyl alcohol (06: 0), palmitoleic alcohol (06: 1), stearic alcohol ( 08: 0), oleic alcohol (08: 1), linoleic alcohol (08: 2), linolenic alcohol (08: 3), arachid alcohol (C20: 0), arachidonic alcohol ( C20: 4), behenic alcohol (C22: 0), 2-hexyldecanol, 2-octyldodecanol, 2-decyltetradecanol and mixtures thereof.
• Mixtures of fatty alcohols which can be used can be produced from one or more vegetable oils and in particular soybean, olive, sunflower, corn, palm, copra, cotton, flax, germ of wheat, safflower or rapeseed, for example.
• the esterification reaction is generally carried out in the absence of a solvent.
• the water produced during the reaction also contributes to the solubilization of the glycine betaine in the reaction mixture.
• 0.8 to 6.0 equivalents preferably from 0.8 to 2 equivalents, for example from 0.9 to 1.0 equivalent, or as a variant of 1.1 to 1.8 equivalents, preferably in this case from 1.2 to 1.6 equivalents and, better, from 1.3 to 1.5 fatty alcohol equivalents or in a second variant from 4.0 to 6 .0 equivalents, preferably in this case from 4.5 to 5.5 equivalents and, better, from 4.8 to 5.2 equivalents of fatty alcohol.
• the esterification is carried out at a temperature ranging for example from 120 to 180 ° C, preferably from 150 to 180 ° C.
• the reaction can be carried out under atmospheric pressure or preferably under reduced pressure, for example at a pressure of 10 to 600 mbar. The pressure will generally be all the lower as the chain length of the fatty alcohol involved is great.
• the reaction medium is then cooled to a temperature of 20 to 90 ° C.
• the surfactant composition thus obtained is then recovered, which contains at least one glycine betaine ester salt of formula X n [(CH3) 3N + -CH2-COOR] n where: X is an organic or inorganic anion, R is a alkyl radical corresponding to the fatty alcohol R-OH used in the esterification reaction, and n is 1 or 2.
• the anion X results from the acid used in the first step of the process and can therefore in particular be a chloride, a sulfate, a perchlorate, an alkylsulfate ion, in particular decylsulfate or laurylsulfate, an arylsulfonate ion, in particular benzene sulfonate , paratoluenesulfonate, an alkylsulfonate ion, in particular triflate, methanesulfonate, ethanesulfonate, decylsulfonate, laurylsulfonate, camphosulfonate, or a sulfosuccinate ion.
• X is chosen from alkylsulphonates and arylsulphonates, in particular from methanesulphonate, triflate, paratoluenesulphonate and camphosulphonate ions. It is advantageously the methanesulfonate or ethanesulfonate ion, more preferably the ethanesulfonate ion.
• the R radical can for its part be chosen from the groups myristyl (04: 0), cetyl (06: 0), palmitoleyl (06: 1), stearyl (08: 0), oleyl (08: 1), linoleyl (08 : 2), linolenyl (08: 3), arachidyl (C20: 0), arachidonyl (C20: 4), behenyl (C22: 0), 2-hexyldecyl, 2-octyldodecyl and 2-decyltetradecyl.
• the surfactant composition obtained according to the invention will comprise several salts of esters of glycine betaine.
• a glycine betaine ester salt should therefore be understood, in the context of this description and unless otherwise indicated, as referring to one or more of these salts.
• dialkyl ether of formula R-O-R where X is an organic or inorganic anion and n is 1 or 2.
• This surfactant composition can be used as it is in the present invention.
• it generally contains 15 to 85% by weight of glycine betaine ester salt.
• the surfactant composition contains:
• the surfactant composition contains:
• This composition can be obtained by carrying out the process described above, which uses an amount of fatty alcohol of between 4 and 6 equivalents and an amount of acid ranging from 1.02 to 1.08 equivalent, for one equivalent of glycine betaine.
• the composition obtained which is found to be rich in alcohol and poor in acid, has several advantages over the composition according to the first variant, obtained using 1.1 to 1.8 equivalents of fatty alcohols and 1.5 to 2.0 acid equivalents.
• the presence of a smaller quantity of acid in the composition makes it possible to increase its naturalness and to reduce the quantity of pH corrector to be added during the formulation of the surfactant composition, the latter itself being liable to 'negatively impact the stability of the emulsion and certain properties conferred on keratin fibers.
• the performance of the surfactant composition is also improved by increasing the amount of residual alcohol that it contains.
• the weight ratio of the glycine betaine ester salt to the fatty alcohol is between 20:80 and 30:70.
• the surfactant composition contains no other constituent than components (a) to (e) above.
• the above method can include an additional step of isolating the glycine betaine ester salt present in this composition, which can be used as such in the present invention.
• the surfactant composition used according to the invention will comprise at least 90%, preferably at least 95%, or even at least 99% by weight of glycine betaine derivative.
• glycine betaine derivatives can be prepared according to a process comprising the successive steps consisting in:
• the first step of this process consists of an esterification reaction of glycine betaine, which can be carried out in a similar way to obtaining esters of glycine betaine, except that one or more alcohol (s) are used.
• alcohol linear (s) and / or branched (s) in C4-C8 in presence of the acid which can be chosen from those described above.
• alcohols include butanol, pentanol, 3-methylbutan-1-ol (or isoamyl alcohol), fusel alcohol (mixture of pentanol, 2-methylbutan-1-ol and 3-methylbutan). 1-ol), hexanol, heptanol, octanol and mixtures thereof.
• butanol is also understood in this description n-butanol, isobutanol and sec-butanol. Butanol, and more particularly n-butanol, as well as hexanol, are preferred for use in this invention, with hexanol being particularly preferred.
• This reaction is generally carried out in the absence of any solvent, the alcohol used constituting both the reagent and the medium. The water produced during the reaction also contributes to the solubilization of glycine betaine in the reaction mixture.
• esterification can be carried out at a temperature from 100 to 180 ° C, preferably from 100 to 160 ° C, more preferably from 120 to 150 ° C or from 130 to 160 ° C under atmospheric pressure or under reduced pressure.
• the product of the esterification reaction may or may not be treated so as to separate the salt of the glycine betaine ester formed from the reaction medium.
• One or more C14-C24 alkylamine is then added either to the reaction medium or to the isolated ester.
• examples of such amines are: tetradecylamine, hexadecylamine, octadecy amine, docosanylamine, eicosanylamine and mixtures thereof. It is preferred according to the invention to use one or more amines containing from 16 to 22 carbon atoms and more preferably a mixture of such amines.
• the alkylamine is advantageously used in molten form.
• the amount of alkylamine (s) added may for example represent from 0.9 to 1.5 equivalents and preferably from 1.0 to 1.2 equivalents per 1 equivalent of glycine betaine initially used.
• This aminolysis reaction is typically carried out at a temperature of 50 to 180 ° C and preferably 120 to 140 ° C, under reduced pressure, for example under a pressure of 1 to 30 mbar.
• the alcohol is removed by distillation under reduced pressure.
• the aminolysis reaction and the distillation are carried out for a period of 1 to 7 hours, in particular 3 to 5 hours.
• the surfactant composition thus obtained is then recovered.
• glycine betaine of formula (4) (CH3) 3N + -CH2-COO; where X is an organic or inorganic anion and n is 1 or 2.
• This surfactant composition can be used as it is in the present invention.
• it generally contains 60 to 98% by weight, for example 70 to 80% by weight, of glycine betaine amide salt.
• Component (b) can represent from 0 to 25% by weight, for example from 15 to 20% by weight, component (c) from 0 to 15% by weight, for example from 5 to 10% by weight, and the component (c) from 0 to 15% by weight, for example from 5 to 10% by weight, and constituent (d) from 0 to 5% by weight, relative to the total weight of the surfactant composition.
• this does not contain any other constituent than components (a) to (d) above.
• the above method can include an additional step of isolating the glycine betaine amide salt present in this composition, which can be used as such in the present invention.
• the surfactant composition used according to the invention will comprise at least 90%, preferably at least 95%, or even at least 99% by weight of glycine betaine derivative.
• the surfactant composition according to the invention contains at least 90% by weight, preferably at least 95% by weight, or even at least 99% by weight, of ingredients of natural origin, such as calculated according to ISO-16128.
• a cosmetic composition is used in emulsion form containing a surfactant composition as described above.
• This emulsion can have a liquid or semi-liquid consistency, a soft consistency of the cream or balm type or a solid consistency of the stick type. It can be of the oil-in-water (O / W), oil-in-glycerin, water-in-oil (W / O), water-in-glycerin or multiple (for example W / O / W) type.
• This emulsion is preferably of the oil-in-water type. It generally contains from 1 to 8% by weight, and preferably from 1 to 4% by weight, of glycine betaine derivative used according to the invention.
• This cosmetic composition can in particular be packaged in a tube, a pump-dispenser or a jar. As a variant, it can be packaged in an aerosol container, in order to ensure application of the composition in vaporized form. In the latter case, the cosmetic composition preferably comprises at least one propellant.
• the cosmetic composition used according to the invention comprises a cosmetically acceptable medium, that is to say a medium compatible with keratin fibers and the skin, in particular with the hair and the scalp, and which does not generate skin irritation. the skin or scalp or other undesirable effect after application to keratin fibers.
• This cosmetic composition comprises an aqueous phase comprising water, one or more cosmetically acceptable water-soluble solvents chosen from C 1 -C 4 alcohols, such as ethanol, isopropanol, tert-butanol or n-butanol, polyols such as glycerol, propylene glycol and polyethylene glycols, and mixtures thereof.
• it can comprise a mixture of water and one or more of the aforementioned solvents.
• the cosmetic composition has a total water content of between 5 and 95% by weight, preferably between 10 and 90%, for example between 40 and 85% by weight, in particular between 50 and 80%. by weight relative to the total weight of the composition.
• the pH of this composition generally varies from 3 to 9, preferably from 3 to 7, preferably from 3.5 to 6, and better still from 3.5 to 5. It can be adjusted within this range using a minus one pH adjuster, chosen for example from: sodium or calcium gluconate, sodium lactate, sodium glycinate, sodium citrate and lactic acid / sodium lactate, acetic acid / sodium acetate buffer solutions and gluconic acid / sodium gluconate.
• a minus one pH adjuster chosen for example from: sodium or calcium gluconate, sodium lactate, sodium glycinate, sodium citrate and lactic acid / sodium lactate, acetic acid / sodium acetate buffer solutions and gluconic acid / sodium gluconate.
• the fatty substance (s) are chosen from oils, pasty fatty substances, waxes and their mixtures.
• oils is understood to mean a compound which is liquid at ambient temperature (25 ° C.) and atmospheric pressure (10 5 Pa) which, when it is introduced in an amount of at least 1% by weight in water at 25 ° C. C, is not at all soluble in water, or soluble in an amount of less than 10% by weight, relative to the weight of oil introduced into the water.
• pasty fatty substance means fatty substances with a reversible liquid / solid state change, exhibiting in the solid state an anisotropic crystalline organization and comprising, at a temperature of 23 ° C, a liquid fraction and a solid fraction, such as than vegetable butters.
• wax denotes, in the context of this description, a fatty substance which is solid at 25 ° C, with a reversible solid / liquid change of state, having a melting point generally between 30 and 160 ° C, preferably between 50 and 90 ° C, as measured by Differential Scanning Calorimetry (DSC).
• the cosmetic composition used according to the invention comprises at least one oil.
• oils mention may in particular be made of fatty alcohols, fatty esters, hydrocarbons of vegetable or mineral origin, triglycerides and vegetable oils containing them, and mixtures thereof.
• fatty alcohols mention may in particular be made of branched and / or unsaturated C10-C20 fatty alcohols such as octyldodecanol and oleyl alcohol.
• fatty esters are the esters of acids and of monoalcohol chosen from: mono- and polyesters of saturated linear C2-C10 acids (preferably C6-C10) and of linear mono-alcohols saturated in C10-C18 (preferably C10-C14), mono- and polyesters of saturated C10-C20 linear acids and of branched or unsaturated C3-C20 mono-alcohols (preferably C3-C10); mono- and polyesters of branched or unsaturated C5-C20 acids and of branched or unsaturated C5-C20 mono-alcohols; mono- and polyesters of branched or unsaturated C5-C20 acids and linear C2-C4 monoalcohols.
• fatty esters are in particular the mixture of caprate and coconut caprylate, ethyl macadamate, ethyl ester of shea butter, isostearyl isostearate, isononyl isononanoate, d isononanoate.
• ethylhexyl hexyl neopentanoate, ethylhexyl neopentanoate, isostearyl neopentanoate, isodecyl neopentanoate, isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, laurate hexyl, isoamyl laurate, cetostearyl nonanoate, propylheptyl capylate, disopropyl adipate, diethylhexyl adipate, diisopropyl sebacate and diisoamyl sebacate.
• squalane C30
• vegetable squalane extracted from olive oil or by biosynthesis examples of triglycerides
• hemisqualane triglycerides
• triglycerides are triglycerides of C6-C12 fatty acids, such as caprylic and capric acid triglycerides and triheptanoin.
• Examples of vegetable oils are in particular wheat germ, sunflower, argan, hibiscus, coriander, grape seed, sesame, corn, apricot, castor, shea oils, avocado, olive, soybean, sweet almond, palm, rapeseed, cottonseed, hazelnut, macadamia, jojoba, alfalfa, poppy, pumpkin, sesame, squash, blackcurrant, evening primrose, lavender, borage, millet, barley, quinoa, rye, safflower,nadooulier, passionflower, muscat rose, echium, camelina or camellia .
• the fatty substances can represent from 1 to 30% by weight, preferably from 5 to 25% by weight, and preferably from 10 to 20% by weight, relative to the total weight of the cosmetic composition.
• the cosmetic composition used according to the invention can also comprise at least one usual cosmetic ingredient, in particular chosen from nonionic surfactants, cationic surfactants, anionic surfactants, amphoteric surfactants; sun filters; active agents such as vitamins, anti-dandruff agents, anti-seborrheic agents, anti-hair loss and / or hair regrowth agents; antioxidants; pearlescent and / or opacifying agents; pigments; the charges ; sequestering agents; thickeners; non-thickening polymers such as amino silicones and / or cationic polymers; the perfumes ; conservatives ; and their mixtures.
• nonionic surfactants such as vitamins, anti-dandruff agents, anti-seborrheic agents, anti-hair loss and / or hair regrowth agents
• antioxidants antioxidants
• pearlescent and / or opacifying agents pigments
• the charges sequestering agents
• thickeners non-thickening polymers such as amino silicones and / or
• the organic acids which can be used in this composition exhibit a pKa less than or equal to 7, preferably less than or equal to 6, ranging in particular from 1 to 6, preferably from 2 to 5.
• the or the organic acids are chosen from carboxylic acids, sulfonic acids and mixtures thereof.
• the organic acid (s) are chosen from a- and b-hydroxy acids such as lactic acid, citric acid, glycolic acid, salicylic acid, malic acid, tartaric acid and their mixtures, and more preferably citric acid or lactic acid.
• the anionic surfactants are chosen from salts of alkylcarbonylisethionic acid, such as those identified under the INCI names SODIUM COCOYL ISETHIONATE and SODIUM COCOYL METHYL ISETHIONATE; lactylic acid salts, such as SODIUM LAUROYL LACTYLATE; salts of N-acylated amino acids, such as SODIUM LAUROYL GLYCINATE, SODIUM LAUROYL SARCOSINATE, SODIUM LAUROYL TAURATE and SODIUM OLIVOYL GLUTAMATE; sulfated anionic surfactants, chosen in particular from alkyl sulfate salts, in particular SODIUM COCO SULLATE and POTASSIUM LAURYL SULLATE, C8-C14 alkyl ether sulfate salts such as SODIUM LAURYL ETHER SULFATE; soaps in the
• the nonionic surfactant (s) used in the cosmetic composition are preferably chosen from: C8 to C40 alcohols, saturated or not, linear or branched, oxyethylenated comprising from 1 to 100 moles of ethylene oxide, preferably from 2 to 50, more particularly from 2 to 40 moles of ethylene oxide, preferably comprising one or two fatty chains; oxyethylenated vegetable oils, saturated or not, comprising from 1 to 100 moles of ethylene oxide, preferably from 2 to 50; (C8-C30) alkyl (poly) glucosides, optionally oxyalkylenated (0 to 10 EO) and comprising 1 to 15 glucose units; sucrose esters such as sucrose stearate and sucrose distearate, C8 to C40 alcohols, mono- or polyglycerolated, comprising from 1 to 50 moles of glycerol, preferably from 1 to 10 moles of glycerol; saturated or unsaturated, linear or branched, oxyalky
• amphoteric, preferably non-silicone, surfactant (s) used in the cosmetic composition used in the present invention may in particular be derivatives of secondary or tertiary aliphatic amines, optionally quaternized, in which the aliphatic group is a linear or branched chain comprising from 8 to 22 carbon atoms, said amine derivatives containing at least one anionic group such as, for example, a carboxylate, sulfonate, sulfate, phosphate or phosphonate group.
• alkyl (C8-C20) betaines alkyl (C8-C20) sulfobetaines
• alkyl (C8-C20) amidoalkyl (C3- C8) betaines alkyl (C8-C20) -amidalkyl (C6- C8) sulfobetaines.
• the cationic surfactant (s) optionally used in addition to the glycine betaine derivatives can be chosen from salts of primary, secondary or tertiary fatty amines, optionally polyoxyalkylenated, quaternary ammonium salts, and mixtures thereof.
• the thickener (s) can be chosen from cellulose thickening agents, for example hydroxyethylcellulose, hydroxypropylcellulose and carboxymethylcellulose; gums of natural origin such as Tara gum (Caesalpinia Spinosa Gum) and guar gum and its derivatives, for example hydroxypropyl guar and hydroxypropyltrimonium guar chloride; gums of microbial origin, such as xanthan gum and scleroglucan gum; synthetic thickening agents such as crosslinked homopolymers of acrylic acid or acrylamidopropanesulfonic acid; nonionic, anionic, cationic or amphoteric associative polymers.
• cellulose thickening agents for example hydroxyethylcellulose, hydroxypropylcellulose and carboxymethylcellulose
• gums of natural origin such as Tara gum (Caesalpinia Spinosa Gum) and guar gum and its derivatives, for example hydroxypropyl guar and
• cationic polymers which can be used as thickening polymers, mention may be made more particularly of polymers of the polyamine, polyaminoamide and polyquaternary ammonium type, in particular cationic celluloses, cationic guar gums and homopolymers or copolymers of dimethyldiallyl-ammonium halides.
• active agents which can be included in the composition according to the invention are sodium hyaluronate, tocopherol and its derivatives such as tocopherol acetate, panthenol, serine, glycerin, arginine, ceramides such as that 2-oleamido-1,3-octadecanediol, hydroxypropyl starch phosphate and mixtures thereof, without this list being limiting. Mention may also be made of hair conditioning agents such as silicones, in particular dimethicone and amodimethicone.
• the cosmetic composition used according to the invention is in the form of a product for caring for keratin fibers, in particular a conditioner or a hair mask intended for treating the hair.
• a conditioner or a hair mask intended for treating the hair.
• it is intended for the treatment, and therefore preferably applied to, weakened and / or damaged hair, for example by treatments.
• chemical or mechanical in particular by coloring, bleaching, perming or straightening or by brushing.
• It can also be used as a treatment cream shampoo, in particular antiseborrheic or anti-dandruff.
• This composition can constitute a rinse-out or leave-in product. It does not generally exhibit foaming properties.
• This composition can also be in the form of a product to be rinsed out, to be applied before or after coloring, bleaching, perming or straightening or alternatively between the two stages of a perm or straightening.
• the cosmetic composition according to the invention can be in the form of a beard care product.
• the present invention relates more precisely to a cosmetic process for conditioning keratin fibers, comprising the topical application to the keratin fibers of a cosmetic composition in emulsion form as described above.
• keratin fibers is meant the hair and body hair, in particular the beard and the eyebrows.
• the types of hair to which the composition according to the invention can be applied include Caucasian, African and Asian hair. They can be more or less curly or even frizzy.
• conditioning is meant, in the context of this description, the improvement of at least one property of keratin fibers chosen from: their combability, their ability to disentangle, their softness, their flexibility, their shine and their workability.
• the conditioning of keratin fibers does not include cleaning them.
• the composition according to the invention therefore does not generally constitute a shampoo.
• the composition can be applied to dry or wet hair, and preferably to wet or damp hair, that is to say previously washed and rinsed hair.
• the method according to the invention consists in applying to the hair an effective amount of the cosmetic composition, optionally mixing the hair, optionally leaving the composition on the hair and rinsing.
• the exposure time of the composition on the hair can be between a few seconds and 15 minutes and preferably between 30 seconds and 5 minutes.
• the composition is generally rinsed off with water.
• a possible step of drying the hair can be implemented.
• the method according to the invention consists in applying to the hair an effective amount of the cosmetic composition, optionally mixing the fibers, optionally allowing the composition to sit on said fibers, and optionally drying without prior rinsing.
• This process is more particularly intended to improve the combability and / or the softness and / or the suppleness and / or the workability and / or the shine of keratin fibers and / or to smooth them and / or to hydrate them and / or to reduce them. their static electricity. It is generally not suitable or intended for cleaning keratin fibers.
• Figure 1 illustrates the combability of a lock of hair treated respectively with water and with compositions containing respectively a reference surfactant, a mixture of salts of esters of glycine betaine according to the invention and a mixture of salts of 'glycine betaine amides according to the invention.
• Figure 2 is a diagram illustrating the softness of locks treated using compositions containing respectively a reference surfactant, a mixture of salts of esters of glycine betaine according to the invention and a mixture of salts of amides of glycine betaine according to the invention, by comparison with a commercial conditioner.
• Glycine betaine (1.0 eq) and a mixture of fatty alcohols from 08 to C22 (1.4 eq) are introduced into a reactor.
• the setpoint temperature for the mixture is fixed at 170 ° C. and the pressure is reduced to a value of 60 mbar.
• a 70% methanesulfonic acid solution (1.6 eq) is added to the reaction mixture.
• the setpoint temperature is brought back to 150 ° C. and the pressure is maintained at a value of 30 mbar.
• the reaction mixture is allowed to cool to 80 ° C., then the product is recovered, cooled to room temperature, and constitutes the surfactant composition according to the invention, which contains the following constituents:
• Glycine betaine (1.0 eq) and a mixture of C 18 to C22 fatty alcohols (5.0 eq) are introduced into a reactor.
• the setpoint temperature for the mixture is fixed at 170 ° C. and the pressure is reduced to a value of 60 mbar.
• a 70% ethanesulfonic acid solution (1.05 eq) is added to the reaction mixture.
• the setpoint temperature is brought back to 150 ° C. and the pressure is maintained at a value of 30 mbar.
• the reaction mixture is allowed to cool to 80 ° C., then the product is recovered, cooled to room temperature, and constitutes the surfactant composition according to the invention, which contains the following constituents:
• Glycine betaine (1.0 eq), butanol (3.0 eq) and a 70% methanesulfonic acid solution (1.1 eq) are introduced into a reactor surmounted by a condenser.
• the mixture is heated to 140 ° C. under atmospheric pressure.
• a Dean-Stark filled with butanol is mounted on the reactor.
• the mixture is left under atmospheric pressure because the distillation of the water-butanol azeotrope is initially sufficiently large.
• the pressure is reduced to 700 mbar in order to accelerate the elimination of water and allow the displacement of the equilibrium towards butyl ester of glycine betaine.
• the conversion rate is monitored by 1 H NMR analyzes.
• the NMR method consists in producing a 1 H spectrum of the sample dissolved in a CDCl 3 / CD 3 OD (1/1, v / v) mixture, taking the methanol signal as a reference at 3.31 ppm.
• the characteristic signals of the different compounds are then integrated: MsOGBOBu (4.35 ppm, s, 2 H), MsOGB (4.28 ppm, s, 2 H), butanol (3.53 ppm, t, 2 H), methanesulfonate (2.74 ppm, s, 3H), dibutyl ether (3.40 ppm, t, 4H), where XOGBOBu denotes the sulfonate salt of the glycine betaine ester formed and XOGB denotes the glycine betaine sulfonate formed .
• the characteristic signal of the methanesulfonate takes account both of the methanesulfonic acid present in the medium, but also of the methanesulfonate which is the counterion of glycine betaine and of butyl betainate mesylate (MsOGBOBu).
• reaction conversion rate is obtained using the integration values by the following calculation: where: g is the conversion rate
• Ii is the integration value of the characteristic signal of compound i.
• the reaction mixture is allowed to cool to 60 ° C. During this cooling phase, the Dean-Stark assembly is replaced by a distillation assembly and the reactor is placed under pressure. reduced in order to remove part of the butanol and the traces of water remaining in the reaction mixture. Once the mixture has reached 60 ° C., the mixture of fatty amines C16-C22 (1.1 eq) previously melted is added. The reaction mixture is then heated to 150 ° C. under reduced pressure. The pressure is gradually reduced to 10 mbar. After complete distillation of the butanol (approximately 4 hours), the reaction mixture is recovered and constitutes the surfactant composition according to the invention, containing the following constituents:
• the NMR method consists in producing a 1 H spectrum of the sample dissolved in a CDCl 3 / CD 3 OD (1/1, v / v) mixture, taking the methanol signal as a reference at 3.31 ppm.
• the characteristic signals of the different compounds are then integrated: EsOGBOCô (4.35 ppm, s, 2 H), EsOGB (4.28 ppm, s, 2 H), hexanol (3.53 ppm, t, 2 H), ethanesulfonate (2.82 ppm, q, 2 H), dihexyl ether (3.40 ppm, t, 4 H), where XOGBOC6 denotes the sulfonate salt of the glycine betaine ester formed and XOGB denotes the glycine betaine sulfonate formed .
• the characteristic signal of G ethanesulfonate takes into account both the ethanesulfonic acid present in the medium, but also ethanesulfonate which is the counterion of glycine betaine and hexyl betainate esylate (EsOGBOC6).
• the reaction conversion rate is obtained using the integration values by the following calculation: where: r) is the conversion rate h is the integration value of the signal characteristic of compound i.
• a comparative test was carried out for disentangling a lock of hair using an emulsion of fatty alcohol in water containing, as a conditioning agent, either a mixture of salts of glycine betaine esters in Cl 8 to C22 or a mixture of salts of C 16 to C22 glycine betaine amides according to the invention, or a conditioning agent, namely behentrimonium chloride (Varisoft ® BT 85 from EVONIK).
• a conditioning agent namely behentrimonium chloride (Varisoft ® BT 85 from EVONIK).
• the glycine betaine ester and amide salts corresponded respectively to the compositions presented in Table 1 of Example 1 and in Table 3 of Example 2.
• Buffer solution qs pH 4, 0-5.0 Demineralized water QSP 100.00%
• the glycine betaine ester salts according to the invention offer performance equivalent to the reference surfactant.
• the glycine betaine derivatives exhibit greater biodegradability than the reference surfactant, are 100% biobased and their synthesis process is more respectful of the environment.
• Glycine betaine amide salts exhibit superior efficacy to ester salts.
• a Diastron ® Fibra One device equipped with a comb is used to measure the work (in Joules) required to go through a lock of hair.
• the device is set as follows:
• the same conditioning treatment (0.5 mL) is then applied to one side of each of the five strands, then the product is spread 10 times with two fingers before being applied (0.5mL) to the other side of the strand. wick then spread 10 times with two fingers.
• the locks are then each rinsed for 16 seconds in tap water (changing sides every 8 seconds). The excess water is removed by squeezing 3 times between 2 fingers with the same force.
• the locks were then again tested Diastron ® as described above. They are then subjected to two successive rinses (passing under the water tap for 10 seconds then removing the excess water by squeezing 3 times between 2 fingers) and again passed through Diastron ® after each rinsing. The average of the three measurements obtained is calculated.
• 2- Comparative surfactant composition containing 1% by weight of nonionic surfactant (sorbitan stearate) and 3% by weight of C1822 alcohols,
• C.sub.1822 alcohols denotes a mixture of fatty alcohols containing from 18 to 22 atoms carbon (Stenol ® 1822A from BASF).
• the product according to the invention gives the treated locks ease of disentangling, which results in the reduction of the work measured for combing the locks.
• This is of the same order as that obtained with a non-biodegradable cationic surfactant which is usually used in disentangling products (product 3) and higher than that obtained with a commercial cationic surfactant having a lower biodegradability than the product according to the invention (product 4).
• the performances of the product according to the invention are also much better than those obtained with a nonionic surfactant (product 2).
• Example 5 Formulations
• surfactant compositions according to the invention based respectively on ester or palmitic amide (GBE 06: 0 or GBA 06: 0), stearic (GBE 08: 0) salts. or GBA 08: 0), arachidic (GBE C20: 0 or GBA C20: 0), or behenyl (GBE C22: 0 or GBA C22: 0) or mixtures thereof, and more particularly esters according to the second variant of l invention, containing at least 55% by weight of fatty alcohol.

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• 2020
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