US20060111509A1 - Composition and method for preparing novel cationic thickeners - Google Patents

Composition and method for preparing novel cationic thickeners Download PDF

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US20060111509A1
US20060111509A1 US11/321,399 US32139905A US2006111509A1 US 20060111509 A1 US20060111509 A1 US 20060111509A1 US 32139905 A US32139905 A US 32139905A US 2006111509 A1 US2006111509 A1 US 2006111509A1
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Olivier Braun
Paul Mallo
Herve Rolland
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    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3746Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3769(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
    • C11D3/3776Heterocyclic compounds, e.g. lactam
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/88Polyamides
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/005Antimicrobial preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/10Washing or bathing preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • A61Q5/06Preparations for styling the hair, e.g. by temporary shaping or colouring
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/32Polymerisation in water-in-oil emulsions
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/37Polymers
    • C11D3/3746Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3769(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/52General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
    • D06P1/5207Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • D06P1/5214Polymers of unsaturated compounds containing no COOH groups or functional derivatives thereof
    • D06P1/5242Polymers of unsaturated N-containing compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/52General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
    • D06P1/5207Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • D06P1/525Polymers of unsaturated carboxylic acids or functional derivatives thereof
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/52General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
    • D06P1/5207Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • D06P1/525Polymers of unsaturated carboxylic acids or functional derivatives thereof
    • D06P1/5257(Meth)acrylic acid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/54Polymers characterized by specific structures/properties
    • A61K2800/542Polymers characterized by specific structures/properties characterized by the charge
    • A61K2800/5422Polymers characterized by specific structures/properties characterized by the charge nonionic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/54Polymers characterized by specific structures/properties
    • A61K2800/542Polymers characterized by specific structures/properties characterized by the charge
    • A61K2800/5426Polymers characterized by specific structures/properties characterized by the charge cationic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/52Amides or imides
    • C08F220/54Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
    • C08F220/58Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine

Definitions

  • the subject of the invention is novel polymers, their method of preparation and their use as thickening and/or emulsifying agent.
  • the thickening of aqueous phases is generally carried out by incorporating therein hydrophilic polymers of all sorts, whether they are synthetic or of natural origin.
  • xanthan or guar gums are fairly widely used. They however have the conventional disadvantages of natural products, namely a fluctuating quality and price.
  • hydrophilic synthetic thickeners most widely used are polymers in the form of self-reversible invert latexes or powders. They are used in a wide pH range and are often well tolerated by humans. Such compositions are described for example in French patents and patent applications published under the numbers 2721511, 2773805, 2774688, 2774996, 2782086, 2785801, 2786493, 2787457, 2789395, 2794034, 2794124, 2808446, 2808447 and 2810883.
  • These polymers are anionic and are essentially intended to thicken and/or emulsify cosmetic, dermo-pharmaceutical or pharmaceutical topical formulations which contain numerous constituents such as oils, nonionic or anionic surfactants, inorganic salts and/or weak acids.
  • Some formulations in particular those intended for hair care, also contain cationic surfactants and/or cationic conditioning polymers.
  • thickeners consisting of anionic polymers are not recommended because of electrostatic interactions between the positive and negative charges which cause precipitation of the polymer, and cationic thickening polymers such as those described in American patents published under the numbers U.S. Pat. No. 4,806,345 and U.S. Pat. No. 5,100,660 are preferably used.
  • the subject of the invention is a linear or crosslinked cationic polyelectrolyte, characterized in that it is obtained by copolymerization of at least one cationic monomer with at least one neutral monomer and at least one nonionic surfactant monomer.
  • crosslinked polyelectrolyte denotes a nonlinear polyelectrolyte which exists in the form of a three-dimensional network which is insoluble in water, but which is capable of swelling in water and therefore leading to the production of a chemical gel.
  • copolymerization means, in the context of the present invention, that the polymerization reaction uses at least three different monomers. It can however involve more than three different monomers.
  • neutral monomer denotes monomers not containing any strong or weak acid functional group or any positively charged group. They are more particularly chosen from acrylamide, methacrylamide, vinylpyrrolidone, diacetoneacrylamide, dimethylacrylamide, (2-hydroxyethyl) acrylate, (2,3-dihydroxypropyl) acrylate, (2-hydroxyethyl) methacrylate, (2,3-dihydroxypropyl) methacrylate or an ethoxylated derivative having a molecular weight of between 400 and 1000, of each of these esters.
  • cationic monomers denotes more particularly monomers containing a quaternary ammonium functional group. They are more particularly chosen from 2,N,N,N-tetramethyl-2-[(1-oxo-2-propenyl)amino]propanammonium chloride (AMPTAC), 2,N,N-trimethyl-2-[(1-oxo-2-propenyl)amino]propanammonium chloride, N,N,N-trimethyl-3-[(1-oxo-2-propenyl)amino]propanammonium chloride (APTAC), diallyldimethylammonium chloride (DADMAC), N,N,N-trimethyl-2-[(1-oxo-2-propenyl)]ethanammonium chloride, N,N,N-trimethyl-2-[(1-oxo-2-methyl-2-propenyl)]-ethanammonium chloride, N-[2-(dimethylamino)-1,1-d
  • nonionic surfactant monomer denotes more particularly the polyalkoxylated derivatives of esters of monomers containing a weak acid functional group with fatty alcohols.
  • Such compounds are represented either by general formula (I): A-C( ⁇ O)—O—[(CH 2 —CH(R 1 )—O] n —R (I) or alternatively by general formula (I′): R′—[O—CH(R′ 1 )—CH 2 ] n —O—(O ⁇ )C-A′-C( ⁇ O)—O—[(CH 2 —CH(R 1 )—O] n —R (I′) in which formulae (I) and (I′):
  • n and n′ represent, independently of each other, a number between 1 and 50;
  • A represents an unsaturated aliphatic monovalent radical comprising from 2 to 6 carbon atoms
  • A′ represents an unsaturated aliphatic divalent radical comprising from 2 to 6 carbon atoms
  • R 1 and R′ 1 represent, independently of each other, a hydrogen atom, a methyl radical or an ethyl radical
  • R and R′ represent, independently of each other, a saturated or unsaturated, linear or branched, aliphatic hydrocarbon radical comprising from 8 to 30 carbon atoms.
  • the divalent radicals: —[(CH 2 —CH(R 1 )—O] n — and —[O—CH(R′ 1 )—CH 2 ] n — represent, independently of each other:
  • unsaturated aliphatic monovalent radical comprising from 2 to 6 carbon atoms denotes more particularly for A, the vinyl radical (CH 2 ⁇ CH—) or the 2-propenyl radical [CH 2 ⁇ C(CH 3 )—].
  • unsaturated aliphatic divalent radical comprising from 2 to 6 carbon atoms denotes more particularly for A′, the 1,2-ethenediyl radical (—CH ⁇ CH—) or the 2-propene-1,2-diyl radical [—CH 2 —C( ⁇ CH 2 )—].
  • saturated or unsaturated, linear aliphatic hydrocarbon radical comprising from 8 to 30 carbon atoms denotes more particularly for R and R′, the radicals derived from linear primary alcohols such as for example those derived from octyl, pelargonic, decyl, undecyl, undecenyl, lauryl, tridecyl, myristyl, pentadecyl, cetyl, heptadecyl, stearyl, oleyl, linoleyl, nonadecyl, arachidyl, behenyl, erucyl or 1-triacontanoic alcohols.
  • linear primary alcohols such as for example those derived from octyl, pelargonic, decyl, undecyl, undecenyl, lauryl, tridecyl, myristyl, pentadecyl, cetyl, heptadecyl, stearyl,
  • saturated or unsaturated, branched aliphatic hydrocarbon radical comprising from 8 to 30 carbon atoms denotes more particularly for R and R′,
  • isoalkanols corresponding to general formula: CH 3 —CH(CH 3 )—(CH 2 ) m —CH 2 OH, in which m represents an integer between 2 and 26, such as for example the 4-methylpentyl, 5-methylhexyl, 6-methylheptyl, 15-methylpentadecyl or 16-methylheptadecyl radicals;
  • the subject of the invention is more particularly a cationic polyelectrolyte as defined above, characterized in that the nonionic surfactant monomer is chosen from the compounds of formula (I) or the compounds of formula (I′) as defined above, in which:
  • R and R′ represent, independently of each other, a saturated or unsaturated, linear or branched, aliphatic hydrocarbon radical comprising from 8 to 18 carbon atoms,
  • R 1 and R′ 1 each represent a hydrogen atom
  • n and n′ represent, independently of each other, a number between 1 and 10.
  • the subject of the invention is more particularly a cationic polyelectrolyte as defined above, characterized in that:
  • its subject is a cationic polyelectrolyte as defined above, characterized in that it is obtained by copolymerization of at least one cationic monomer with at least one neutral monomer, at least one nonionic surfactant monomer and a non-zero proportion of N-[2-hydroxy-1,1-bis(hydroxymethyl)ethyl)propenamide.
  • N-[2-Hydroxy-1,1-bis(hydroxymethyl)ethyl]propenamide, also called tris(hydroxymethyl)acrylamidomethane or THAM: is described in European patent application published under the number EP 0 900 786.
  • the polyelectrolyte as defined above is not crosslinked.
  • the polyelectrolyte as defined above is crosslinked.
  • the crosslinking agent is chosen in particular from diethylenic or polyethylenic compounds, and most particularly from diallyloxyacetic acid or one of the salts and in particular its sodium salt, triallylamine, trimethylol propanetriacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, diallylurea or methylene bis(acrylamide).
  • the crosslinking agent is then generally used in the molar proportion, expressed relative to the monomers used, of 0.005% to 1%, in particular 0.01% to 0.2%, and more particularly 0.01% to 0.1%.
  • composition comprising an oily phase, an aqueous phase, at least one water-in-oil (W/O) type emulsifying agent, at least one oil-in-water (O/W) type emulsifying agent, in the form of a self-reversible invert latex comprising from 20% to 70% by weight, preferably from 25% to 40% by weight, of a cationic polyelectrolyte as defined above.
  • W/O water-in-oil
  • O/W oil-in-water
  • the self-reversible invert latex according to the invention generally contains from 2.5% to 15% by weight, and preferably from 4% to 9% by weight, of emulsifying agents, of which from 20% to 50%, in particular from 25% to 40% of the total weight of the emulsifying agents present are of the water-in-oil (W/O) type and in which from 80% to 50%, in particular from 75% to 60%, of the total weight of the emulsifying agents are of the oil-in-water (O/W) type.
  • W/O water-in-oil
  • O/W oil-in-water
  • the oily phase generally represents from 15% to 50%, preferably from 20% to 25%, of its total weight.
  • the self-reversible invert latex also contains between 5% and 60% by weight of water and more particularly between 20% and 50% by weight of water.
  • the self-reversible invert latex according to the invention may also contain various additives such as complexing agents or chain-regulating agents.
  • water-in-oil type emulsifying agent denotes emulsifying agents possessing a sufficiently low HLB value to form water-in-oil emulsions, such as the surfactant polymers marketed under the name HYPERMERTM such as HYPERMERTM B246, HYPERMERTM B41 or HYPERMERTM 2296 or such as sorbitan esters, such as the sorbitan monooleate marketed by the company SEPPIC under the name MONTANETM 80, the sorbitan isostearate marketed by SEPPIC under the name MONTANETM 70 or the sorbitan sesquioleate marketed by SEPPIC under the name MONTANETM 83.
  • the HLB value to be taken into consideration is that of the said mixture.
  • oil-in-water type emulsifying agent denotes emulsifying agents possessing a sufficiently high HLB value to give oil-in-water emulsions such as for example the ethoxylated sorbitan esters such as the ethoxylated sorbitan oleate containing 20 moles of ethylene oxide, ethoxylated castor oil containing 40 moles of ethylene oxide, ethoxylated sorbitan laurate containing 20-moles of ethylene oxide which are marketed by the company SEPPIC under the names MONTANOXTM 80, SIMULSOLTM OL 50 and MONTANOXTM 20, respectively, the ethoxylated lauryl alcohol containing 7 moles of ethylene oxide marketed by the company SEPPIC under the name SIMULSOLTM P7, the decaethoxylated oleocetyl alcohol of ethylene marketed by the company SEPPIC under the name SIMULSOLTM OC 710 or the polye
  • the oily phase of the self-reversible invert latex described above consists:
  • R 1 represents a linear or branched, saturated or unsaturated hydrocarbon chain containing from 7 to 30 carbon atoms
  • R 2 represents, independently of R 1 , a hydrogen atom, a linear or branched, saturated or unsaturated hydrocarbon chain containing from 7 to 30 carbon atoms
  • R 3 represents, independently of R 1 or of R 2 , a hydrogen atom or a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1 to 30 carbon atoms
  • m, n, p and q are, independently of each other, equal to 0 or 1, it being understood that when R 3 represents a hydrogen atom, q is different from 0.
  • triglycerides of fatty acids or of mixtures of fatty acids such as the mixture of fatty acid triglycerides containing from 6 to 10 carbon atoms, marketed under the name SOFTENOLTM 3819, the mixture of fatty acid triglycerides containing from 8 to 10 carbon atoms, marketed under the name SOFTENOLTM 3108, the mixture of fatty acid triglycerides containing from 8 to 18 carbon atoms, marketed under the name SOFTENOLTM 3178, the mixture of fatty acid triglycerides containing from 12 to 18 carbon atoms, marketed under the name SOFTENOLTM 3100, the mixture of fatty acid triglycerides containing 7 carbon atoms, marketed under the name SOFTENOLTM 3107, the mixture of fatty acid triglycerides containing 14 carbon atoms, marketed under the name
  • its subject is also a method for preparing a self-reversible invert latex as defined above, characterized in that:
  • an aqueous solution containing the monomers and the optional additives is emulsified in an oily phase in the presence of one or more water-in-oil type emulsifying agents and nonionic surfactant monomer,
  • the polymerization reaction is initiated by introducing into the emulsion formed in a) a free radical initiator and optionally a coinitiator and then it is allowed to progress,
  • one or more oil-in-water type emulsifying agents are introduced at a temperature of less than 50° C.
  • reaction medium derived from step b) is concentrated by distillation, before carrying out step c).
  • the polymerization reaction is initiated by an oxidation-reduction pair generating hydrogen sulphite ions (HSO 3 ⁇ ), such as the cumene hydroperoxide-sodium metabisulphite (Na 2 S 2 O 5 ) pair or the cumene hydroperoxide-thionyl chloride (SOCl 2 ) pair at a temperature of less than or equal to 10° C., if desired accompanied by a polymerization coinitiator such as for example azobis(isobutyronitrile), dilauryl peroxide or sodium persulphate and then carried out either almost adiabatically until a temperature greater than or equal to 50° C. is obtained, or by controlling the temperature.
  • HSO 3 ⁇ hydrogen sulphite ions
  • the polyelectrolyte as defined above may be isolated from the preceding self-reversible invert latex by various methods known to persons skilled in the art, such as the precipitation technique which consists in pouring the latex into a large excess of a solvent such as acetone, isopropanol or ethanol, or such as the spray-drying technique which is described in the international publication WO 00/01757 or by azeotropic dehydration.
  • the precipitation technique which consists in pouring the latex into a large excess of a solvent such as acetone, isopropanol or ethanol
  • spray-drying technique which is described in the international publication WO 00/01757 or by azeotropic dehydration.
  • the polyelectrolyte which is the subject of the present invention is isolated from the self-reversible invert latex.
  • the polyelectrolyte or the self-reversible invert latex which are the subject of the present invention may be used for example as a thickener for cosmetic or pharmaceutical compositions, as a thickener for printing pastes for the textile industry, as thickeners for industrial or household detergents, as additives for the petroleum industry, as a rheology modifier for drilling mud.
  • the polyelectrolyte which is the subject of the present invention and the self-reversible invert latexes containing it, are advantageously used as thickeners and/or as emulsifiers in cosmetic or pharmaceutical compositions intended for hair care and/or conditioning.
  • compositions are usually provided in the form of emulsion or microemulsion shampoos and in particular in the case of vaporizable emulsion conditioners.
  • the subject of the invention is a cosmetic or pharmaceutical composition, characterized in that it contains, as emulsifying and/or thickening agent, an effective quantity either of the cationic polyelectrolyte as defined above, or of the self-reversible invert latex containing it.
  • the cationic polyelectrolytes or the self-reversible invert latexes may be formulated in cosmetic, dermopharmaceutical or pharmaceutical formulas such as mousses, gels, lotions, sprays, shampoos, conditioners, lotions for the hands and the body, sunscreens, and more generally in care products.
  • An oily phase is prepared by successively mixing:
  • the aqueous phase is gradually incorporated into the organic phase and then subjected to vigorous mechanical stirring by means of an ULTRA-TURRAXTM type turbine mixer in order to form an invert emulsion (water/oil).
  • the emulsion is then cooled to about 10° C. and placed under nitrogen bubbling for about 60 minutes in order to remove oxygen therefrom.
  • the polymerization is then initiated by incorporating therein 10 cm 3 of a solution of cumene hydroperoxide at 0.68% by weight in isohexadecane.
  • 25 g of an aqueous sodium metabisulphite solution at 0.1% by weight are added while allowing the temperature of the mixture to rise to the final polymerization temperature and then leaving the mixture for 90 minutes.
  • the whole is then cooled to about 35° C., and then 40 g of ethoxylated lauryl alcohol at 7 moles (SIMULSOLTM P7) are added.
  • SIMULSOLTM P7 ethoxylated lauryl alcohol at 7 moles
  • Polyelectrolyte content about 27.5% by weight
  • Noncrosslinked AM/APTAC/THAM/LA(4EO) (77.7/14.9/7.0/0.4)
  • An oily phase is prepared by successively mixing:
  • Example 2 The procedure is then carried out according to a procedure identical to that of Example 1 and the desired self-reversible invert latex is obtained.
  • Polyelectrolyte content about 29.7% by weight
  • An oily phase is prepared by successively mixing:
  • Example 2 The procedure is then carried out according to a procedure identical to that of Example 1 and the desired self-reversible invert latex is obtained.
  • Phase A Water qs 100% Xanthan gum 0.50% Phase B SEPICAP TM MP 3.00% Phase C Composition of Example 1 4.00% Phase D Butylene glycol 5.00% LANOL TM 99 5.00% SEPICIDE TM HB 0.30% SEPICIDE TM CI 0.20% Perfume 0.20% Procedure
  • SEPICIDETM HB is a preserving mixture comprising phenoxyethanol, methylparaben, ethylparaben, propylparaben and butylparaben, marketed by the company SEPPIC.
  • SEPICIDETM CI is imidazolidinylurea, marketed by the company SEPPIC.
  • ORAMIXTM NS 10 decyl glucoside marketed by SEPPIC.
  • SEPIPERLTM N (cocoyl glucoside/cocoyl alcohol) marketed by SEPPIC.
  • MONTANOVTM 82 (cocoyl glucoside/cetearyl alcohol) marketed by SEPPIC.
  • AMONYLTM DM (quaternium 82) marketed by SEPPIC.
  • SEPICAPTM MP (sodium cocoyl amino acids/potassium dimethicone copolyol panthenyl phosphate) marketed by SEPPIC.
  • LANOLTM P (glycol palmitate) marketed by SEPPIC.
  • LANOLTM 99 (isononyl isononanoate) marketed by SEPPIC.

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Abstract

A composition and method for a linear or crosslinked cationic polyelectrolyte, involving copolymerization of at least one cationic monomer with at least one neutral monomer and at least one-nonionic surfactant monomer.

Description

  • The subject of the invention is novel polymers, their method of preparation and their use as thickening and/or emulsifying agent.
  • The thickening of aqueous phases is generally carried out by incorporating therein hydrophilic polymers of all sorts, whether they are synthetic or of natural origin.
  • Among the polymers of natural origin, xanthan or guar gums are fairly widely used. They however have the conventional disadvantages of natural products, namely a fluctuating quality and price.
  • Among the hydrophilic synthetic thickeners most widely used are polymers in the form of self-reversible invert latexes or powders. They are used in a wide pH range and are often well tolerated by humans. Such compositions are described for example in French patents and patent applications published under the numbers 2721511, 2773805, 2774688, 2774996, 2782086, 2785801, 2786493, 2787457, 2789395, 2794034, 2794124, 2808446, 2808447 and 2810883.
  • These polymers are anionic and are essentially intended to thicken and/or emulsify cosmetic, dermo-pharmaceutical or pharmaceutical topical formulations which contain numerous constituents such as oils, nonionic or anionic surfactants, inorganic salts and/or weak acids.
  • Some formulations, in particular those intended for hair care, also contain cationic surfactants and/or cationic conditioning polymers. In this particular case, thickeners consisting of anionic polymers are not recommended because of electrostatic interactions between the positive and negative charges which cause precipitation of the polymer, and cationic thickening polymers such as those described in American patents published under the numbers U.S. Pat. No. 4,806,345 and U.S. Pat. No. 5,100,660 are preferably used.
  • Although the latter behave satisfactorily in an acidic medium and are compatible with cationic surfactants, they nevertheless lose their thickening power in formulations high in electrolytes.
  • Accordingly, the applicant focussed on developing novel thickeners of a cationic nature, which are compatible with cationic surfactants while preserving their thickening power in media high in electrolytes.
  • According to a first aspect, the subject of the invention is a linear or crosslinked cationic polyelectrolyte, characterized in that it is obtained by copolymerization of at least one cationic monomer with at least one neutral monomer and at least one nonionic surfactant monomer.
  • The expression crosslinked polyelectrolyte denotes a nonlinear polyelectrolyte which exists in the form of a three-dimensional network which is insoluble in water, but which is capable of swelling in water and therefore leading to the production of a chemical gel.
  • The expression copolymerization means, in the context of the present invention, that the polymerization reaction uses at least three different monomers. It can however involve more than three different monomers.
  • The expression neutral monomer denotes monomers not containing any strong or weak acid functional group or any positively charged group. They are more particularly chosen from acrylamide, methacrylamide, vinylpyrrolidone, diacetoneacrylamide, dimethylacrylamide, (2-hydroxyethyl) acrylate, (2,3-dihydroxypropyl) acrylate, (2-hydroxyethyl) methacrylate, (2,3-dihydroxypropyl) methacrylate or an ethoxylated derivative having a molecular weight of between 400 and 1000, of each of these esters.
  • The expression cationic monomers denotes more particularly monomers containing a quaternary ammonium functional group. They are more particularly chosen from 2,N,N,N-tetramethyl-2-[(1-oxo-2-propenyl)amino]propanammonium chloride (AMPTAC), 2,N,N-trimethyl-2-[(1-oxo-2-propenyl)amino]propanammonium chloride, N,N,N-trimethyl-3-[(1-oxo-2-propenyl)amino]propanammonium chloride (APTAC), diallyldimethylammonium chloride (DADMAC), N,N,N-trimethyl-2-[(1-oxo-2-propenyl)]ethanammonium chloride, N,N,N-trimethyl-2-[(1-oxo-2-methyl-2-propenyl)]-ethanammonium chloride, N-[2-(dimethylamino)-1,1-dimethyl]acrylamide, N-[2-(methylamino)-1,1-dimethyl]acrylamide, 2-(dimethylamino)ethyl acrylate, 2-(dimethylamino)ethyl methacrylate or N-[3-(dimethylamino)propyl]-acrylamide.
  • The expression nonionic surfactant monomer denotes more particularly the polyalkoxylated derivatives of esters of monomers containing a weak acid functional group with fatty alcohols. Such compounds are represented either by general formula (I):
    A-C(═O)—O—[(CH2—CH(R1)—O]n—R  (I)
    or alternatively by general formula (I′):
    R′—[O—CH(R′1)—CH2]n—O—(O═)C-A′-C(═O)—O—[(CH2—CH(R1)—O]n—R  (I′)
    in which formulae (I) and (I′):
  • n and n′ represent, independently of each other, a number between 1 and 50;
  • A represents an unsaturated aliphatic monovalent radical comprising from 2 to 6 carbon atoms,
  • A′ represents an unsaturated aliphatic divalent radical comprising from 2 to 6 carbon atoms,
  • R1 and R′1 represent, independently of each other, a hydrogen atom, a methyl radical or an ethyl radical; and
  • R and R′ represent, independently of each other, a saturated or unsaturated, linear or branched, aliphatic hydrocarbon radical comprising from 8 to 30 carbon atoms.
  • In formulae (I) and (I′), as defined above, the divalent radicals:
    —[(CH2—CH(R1)—O]n— and —[O—CH(R′1)—CH2]n
    represent, independently of each other:
  • either chains composed solely of ethoxyl groups (R1=H; n>0),
  • or chains composed solely of propoxyl groups (R1=CH3; n>0),
  • or chains composed solely of butoxyl groups (R1=C2H5; n>0),
  • or chains composed of at least two different groups chosen from ethoxyl, propoxyl and/or butoxyl groups.
  • When these chains are composed of different groups, they are distributed right along this chain, in a block or randomly.
  • The expression unsaturated aliphatic monovalent radical comprising from 2 to 6 carbon atoms denotes more particularly for A, the vinyl radical (CH2═CH—) or the 2-propenyl radical [CH2═C(CH3)—].
  • The expression unsaturated aliphatic divalent radical comprising from 2 to 6 carbon atoms denotes more particularly for A′, the 1,2-ethenediyl radical (—CH═CH—) or the 2-propene-1,2-diyl radical [—CH2—C(═CH2)—].
  • The expression saturated or unsaturated, linear aliphatic hydrocarbon radical comprising from 8 to 30 carbon atoms denotes more particularly for R and R′, the radicals derived from linear primary alcohols such as for example those derived from octyl, pelargonic, decyl, undecyl, undecenyl, lauryl, tridecyl, myristyl, pentadecyl, cetyl, heptadecyl, stearyl, oleyl, linoleyl, nonadecyl, arachidyl, behenyl, erucyl or 1-triacontanoic alcohols. They are in this case octyl, nonyl, decyl, undecyl, 10-undecenyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, 9-octadecenyl, 10,12-octadecadienyl, 13-docosenyl or triacontanyl radicals.
  • The expression saturated or unsaturated, branched aliphatic hydrocarbon radical comprising from 8 to 30 carbon atoms denotes more particularly for R and R′,
  • either the radicals derived from Guerbet alcohols, which are branched 1-alkanols corresponding to general formula:
    CH3—(CH2)pCH[CH3—(CH2)p-2]—CH2OH,
    in which p represents an integer between 2 and 14, such as for example the 2-ethylhexyl, 2-propylheptyl, 2-butyloctyl, 2-pentylnonyl, 2-hexyldecyl or 2-octyldodecyl radicals;
  • or the radicals derived from isoalkanols corresponding to general formula:
    CH3—CH(CH3)—(CH2)m—CH2OH,
    in which m represents an integer between 2 and 26, such as for example the 4-methylpentyl, 5-methylhexyl, 6-methylheptyl, 15-methylpentadecyl or 16-methylheptadecyl radicals;
  • or the 2-hexyloctyl, 2-octyldecyl or 2-hexyldodecyl radicals.
  • The subject of the invention is more particularly a cationic polyelectrolyte as defined above, characterized in that the nonionic surfactant monomer is chosen from the compounds of formula (I) or the compounds of formula (I′) as defined above, in which:
  • R and R′ represent, independently of each other, a saturated or unsaturated, linear or branched, aliphatic hydrocarbon radical comprising from 8 to 18 carbon atoms,
  • R1 and R′1 each represent a hydrogen atom, and
  • n and n′ represent, independently of each other, a number between 1 and 10.
  • The subject of the invention is more particularly a cationic polyelectrolyte as defined above, characterized in that:
  • from 5% to 35% of the monomeric units which it comprises is a cationic monomer,
  • from 55% to 95% of the monomeric units which it comprises is a neutral monomer, and
  • from 0.1% to 5% of the monomeric units which it comprises is a surfactant monomer.
  • According to another particular aspect of the present invention, its subject is a cationic polyelectrolyte as defined above, characterized in that it is obtained by copolymerization of at least one cationic monomer with at least one neutral monomer, at least one nonionic surfactant monomer and a non-zero proportion of N-[2-hydroxy-1,1-bis(hydroxymethyl)ethyl)propenamide.
  • N-[2-Hydroxy-1,1-bis(hydroxymethyl)ethyl]propenamide, also called tris(hydroxymethyl)acrylamidomethane or THAM:
    Figure US20060111509A1-20060525-C00001

    is described in European patent application published under the number EP 0 900 786.
  • When the polyelectrolyte which is the subject of the present invention contains a non-zero proportion of THAM monomer,
  • from 5% to 35% of the monomeric units which it comprises is a cationic monomer,
  • from 35% to 91% of the monomeric units which it comprises is a neutral monomer,
  • from 0.1% to 5% of the monomeric units which it comprises is a nonionic surfactant monomer, and
  • from 3% to 20% of the monomeric units which it comprises is the THAM monomer.
  • According to another particular aspect of the present invention, the polyelectrolyte as defined above is not crosslinked.
  • According to another particular aspect of the present invention, the polyelectrolyte as defined above is crosslinked. In the latter case, the crosslinking agent is chosen in particular from diethylenic or polyethylenic compounds, and most particularly from diallyloxyacetic acid or one of the salts and in particular its sodium salt, triallylamine, trimethylol propanetriacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, diallylurea or methylene bis(acrylamide).
  • The crosslinking agent is then generally used in the molar proportion, expressed relative to the monomers used, of 0.005% to 1%, in particular 0.01% to 0.2%, and more particularly 0.01% to 0.1%.
  • According to a second aspect of the present invention, its subject is a composition comprising an oily phase, an aqueous phase, at least one water-in-oil (W/O) type emulsifying agent, at least one oil-in-water (O/W) type emulsifying agent, in the form of a self-reversible invert latex comprising from 20% to 70% by weight, preferably from 25% to 40% by weight, of a cationic polyelectrolyte as defined above.
  • The self-reversible invert latex according to the invention generally contains from 2.5% to 15% by weight, and preferably from 4% to 9% by weight, of emulsifying agents, of which from 20% to 50%, in particular from 25% to 40% of the total weight of the emulsifying agents present are of the water-in-oil (W/O) type and in which from 80% to 50%, in particular from 75% to 60%, of the total weight of the emulsifying agents are of the oil-in-water (O/W) type.
  • In the self-reversible invert latex as defined above, the oily phase generally represents from 15% to 50%, preferably from 20% to 25%, of its total weight.
  • The self-reversible invert latex also contains between 5% and 60% by weight of water and more particularly between 20% and 50% by weight of water.
  • The self-reversible invert latex according to the invention may also contain various additives such as complexing agents or chain-regulating agents.
  • The expression “water-in-oil type emulsifying agent” denotes emulsifying agents possessing a sufficiently low HLB value to form water-in-oil emulsions, such as the surfactant polymers marketed under the name HYPERMER™ such as HYPERMER™ B246, HYPERMER™ B41 or HYPERMER™ 2296 or such as sorbitan esters, such as the sorbitan monooleate marketed by the company SEPPIC under the name MONTANE™ 80, the sorbitan isostearate marketed by SEPPIC under the name MONTANE™ 70 or the sorbitan sesquioleate marketed by SEPPIC under the name MONTANE™ 83. In the case of a mixture of water-in-oil type emulsifying agents, the HLB value to be taken into consideration is that of the said mixture.
  • The expression “oil-in-water type emulsifying agent” denotes emulsifying agents possessing a sufficiently high HLB value to give oil-in-water emulsions such as for example the ethoxylated sorbitan esters such as the ethoxylated sorbitan oleate containing 20 moles of ethylene oxide, ethoxylated castor oil containing 40 moles of ethylene oxide, ethoxylated sorbitan laurate containing 20-moles of ethylene oxide which are marketed by the company SEPPIC under the names MONTANOX™ 80, SIMULSOL™ OL 50 and MONTANOX™ 20, respectively, the ethoxylated lauryl alcohol containing 7 moles of ethylene oxide marketed by the company SEPPIC under the name SIMULSOL™ P7, the decaethoxylated oleocetyl alcohol of ethylene marketed by the company SEPPIC under the name SIMULSOL™ OC 710 or the polyethoxylated sorbitan hexaoleates marketed by the company ATLAS Chemical Industries under the names G-1086 and G-1096, ethoxylated nonylphenols.
  • The oily phase of the self-reversible invert latex described above consists:
  • either of a commercially available mineral oil containing saturated hydrocarbons of the paraffin, isoparaffin and cycloparaffin type, having at room temperature a density between 0.7 and 0.9 and a boiling point greater than 180° C., such as for example ISOPAR™ M or ISOPAR™ L, EXXOL™ D 100 S marketed by EXXON or the white mineral oils in conformity with the FDA regulations 21 CFR 172,878 and FR 178,3620(a), such as MARCOL™ 52 or MARCOL™ 82, also marketed by EXXON;
  • or of the hydrogenated polyisobutene marketed in France by the company Ets B. Rossow and Co under the name PARLEAM—POLYSYNLANE™ and cited in Michel and Irene Ash; Thesaurus of Chemical products, Chemise Publicité Cos, Ince. 1986 Volume 1, page 211 (ISBN 0 7131 3603 0);
  • or of the isohexadecane identified in Chemical Abstracts by the number RN=93685-80-4 and which is a mixture of C12, C16 and C20 isoparaffins containing at least 97% of C16 isoparaffins, of which the principal constituent is 2,2,4,4,6,8,8-heptamethylnonane (RN=4390-04-9), marketed in France by the company Bayer;
  • or of the isododecane marketed in France by the company Bayer;
  • or of the squalane which is identified in Chemical Abstracts by the number RN=111-01-3 and which is a mixture of hydrocarbons containing more than 80% by weight of 2,6,10,15,19,23-hexamethyltetracosane. It is marketed in France by the company SOPHIM, under the name PHYTOSQUALANE™;
  • or of the fatty acid esters of formula (II):
    R1—(C═O)—O—[[CH2—CH[O—[C(═O)]m—R2]—CH2—O]n—[C(═O)]p]q—R3  (II)
    in which R1 represents a linear or branched, saturated or unsaturated hydrocarbon chain containing from 7 to 30 carbon atoms, R2 represents, independently of R1, a hydrogen atom, a linear or branched, saturated or unsaturated hydrocarbon chain containing from 7 to 30 carbon atoms, R3 represents, independently of R1 or of R2, a hydrogen atom or a linear or branched, saturated or unsaturated hydrocarbon chain containing from 1 to 30 carbon atoms, m, n, p and q are, independently of each other, equal to 0 or 1, it being understood that when R3 represents a hydrogen atom, q is different from 0. As compounds of formula (II), there are more particularly the compounds of formula (IIa):
    R1—(C═O)—O—CH2—CH[O—[C(═O)]m—R2]—CH2—O—[C(═O)]p—R3  (IIa)
    corresponding to formula (II) as defined above, in which q and n are equal to 1, or a mixture of compounds of formulae (IIa); in this case, they are, preferably,
    either a compound of formula (IIa1):
    R1—(C═O)—O—CH2—CH(OH)—CH2—OH (IIa1)
    corresponding to formula (IIa) as defined above, in which m and p are equal to 0 and R2 and R3 represent a hydrogen atom,
    or a compound of formula (IIa2):
    R1—(C═O)—O—CH2—CH(OH)—CH2—O—C(═O)—R3  (IIa2)
    corresponding to formula (IIa) as defined above in which p is equal to 1, m is equal to 0 and R2 represents a hydrogen atom,
    or a compound of formula (IIa3)
    R1—(C═O)—O—CH2—CH[O—C(═O)—R2]—CH2—O—C(═O)—R3 (IIa3)
    corresponding to formula (IIa) as defined above in which m and p are equal to 1,
    or a mixture of compounds of formulae (IIa1), (IIa2) and/or (IIa3).
  • As examples of compounds of formulae (IIa1), (IIa2) or (IIa3), there are for example triglycerides of fatty acids or of mixtures of fatty acids such as the mixture of fatty acid triglycerides containing from 6 to 10 carbon atoms, marketed under the name SOFTENOL™ 3819, the mixture of fatty acid triglycerides containing from 8 to 10 carbon atoms, marketed under the name SOFTENOL™ 3108, the mixture of fatty acid triglycerides containing from 8 to 18 carbon atoms, marketed under the name SOFTENOL™ 3178, the mixture of fatty acid triglycerides containing from 12 to 18 carbon atoms, marketed under the name SOFTENOL™ 3100, the mixture of fatty acid triglycerides containing 7 carbon atoms, marketed under the name SOFTENOL™ 3107, the mixture of fatty acid triglycerides containing 14 carbon atoms, marketed under the name SOFTENOL™ 3114 or the mixture of fatty acid triglycerides containing 18 carbon atoms, marketed under the name SOFTENOL™ 3118, glyceryl dilaurate, glyceryl dioleate, glyceryl isostearate, glyceryl distearate, glyceryl monolaurate, glyceryl monooleate, glyceryl monoisostearate, glyceryl monostearate or a mixture of these compounds.
  • According to a third aspect of the present invention, its subject is also a method for preparing a self-reversible invert latex as defined above, characterized in that:
  • a) an aqueous solution containing the monomers and the optional additives is emulsified in an oily phase in the presence of one or more water-in-oil type emulsifying agents and nonionic surfactant monomer,
  • b) the polymerization reaction is initiated by introducing into the emulsion formed in a) a free radical initiator and optionally a coinitiator and then it is allowed to progress,
  • c) when the polymerization reaction is complete, one or more oil-in-water type emulsifying agents are introduced at a temperature of less than 50° C.
  • According to one variant of this method the reaction medium derived from step b) is concentrated by distillation, before carrying out step c).
  • According to a preferred embodiment of the method as defined above, the polymerization reaction is initiated by an oxidation-reduction pair generating hydrogen sulphite ions (HSO3 ), such as the cumene hydroperoxide-sodium metabisulphite (Na2S2O5) pair or the cumene hydroperoxide-thionyl chloride (SOCl2) pair at a temperature of less than or equal to 10° C., if desired accompanied by a polymerization coinitiator such as for example azobis(isobutyronitrile), dilauryl peroxide or sodium persulphate and then carried out either almost adiabatically until a temperature greater than or equal to 50° C. is obtained, or by controlling the temperature.
  • The polyelectrolyte as defined above may be isolated from the preceding self-reversible invert latex by various methods known to persons skilled in the art, such as the precipitation technique which consists in pouring the latex into a large excess of a solvent such as acetone, isopropanol or ethanol, or such as the spray-drying technique which is described in the international publication WO 00/01757 or by azeotropic dehydration.
  • According to a variant of the methods of preparation as defined above, the polyelectrolyte which is the subject of the present invention is isolated from the self-reversible invert latex.
  • The polyelectrolyte or the self-reversible invert latex which are the subject of the present invention may be used for example as a thickener for cosmetic or pharmaceutical compositions, as a thickener for printing pastes for the textile industry, as thickeners for industrial or household detergents, as additives for the petroleum industry, as a rheology modifier for drilling mud.
  • By virtue of its cationic character, the polyelectrolyte which is the subject of the present invention, and the self-reversible invert latexes containing it, are advantageously used as thickeners and/or as emulsifiers in cosmetic or pharmaceutical compositions intended for hair care and/or conditioning.
  • Such compositions are usually provided in the form of emulsion or microemulsion shampoos and in particular in the case of vaporizable emulsion conditioners.
  • Accordingly, according to a final aspect, the subject of the invention is a cosmetic or pharmaceutical composition, characterized in that it contains, as emulsifying and/or thickening agent, an effective quantity either of the cationic polyelectrolyte as defined above, or of the self-reversible invert latex containing it.
  • The cationic polyelectrolytes or the self-reversible invert latexes may be formulated in cosmetic, dermopharmaceutical or pharmaceutical formulas such as mousses, gels, lotions, sprays, shampoos, conditioners, lotions for the hands and the body, sunscreens, and more generally in care products.
  • The following examples illustrate the present invention without however limiting it.
  • A—EXAMPLES OF PREPARATION OF A SELF-REVERSIBLE INVERT LATEX CONTAINING POLYELECTROLYTES ACCORDING TO THE INVENTION Example 1 Self-Reversible Invert Latex of the Copolymer
  • AM/APTAC/LA(4EO) (84.7/14.9/0.4) crosslinked with MBA
  • The following are loaded into a beaker, with stirring:
      • 164.4 g of deionized water,
      • 362.1 g of a commercial solution containing 50% of acrylamide (AM),
      • 123.9 g of a commercial solution containing 75% of acrylamidopropyltrimethylammonium chloride (APTAC)
      • 0.070 g of methylene bisacrylamide (MBA),
      • 0.45 g of a commercial aqueous solution containing 40% of the sodium salt of diethylenetriaminepentaacetic acid.
  • An oily phase is prepared by successively mixing:
      • 259 g of isohexadecane,
      • 20 g of sorbitan isostearate (MONTANE™ 70),
      • 5 g of HYPERMER™ 2296 (Uniquema),
      • 5 g of tetraethoxylated lauryl acrylate [LA(4EO)],
      • 0.1 g of azobis(isobutyronitrile) (AIBN).
  • The aqueous phase is gradually incorporated into the organic phase and then subjected to vigorous mechanical stirring by means of an ULTRA-TURRAX™ type turbine mixer in order to form an invert emulsion (water/oil).
  • The emulsion is then cooled to about 10° C. and placed under nitrogen bubbling for about 60 minutes in order to remove oxygen therefrom. The polymerization is then initiated by incorporating therein 10 cm3 of a solution of cumene hydroperoxide at 0.68% by weight in isohexadecane. After homogenization of the medium, 25 g of an aqueous sodium metabisulphite solution at 0.1% by weight are added while allowing the temperature of the mixture to rise to the final polymerization temperature and then leaving the mixture for 90 minutes. The whole is then cooled to about 35° C., and then 40 g of ethoxylated lauryl alcohol at 7 moles (SIMULSOL™ P7) are added. The desired self-reversible invert latex is obtained.
  • Analysis
  • Polyelectrolyte content: about 27.5% by weight
  • Measurement of Viscosity
  • Viscosity of an aqueous solution containing 3% by weight of the self-reversible invert latex (Brookfield RVT, No. 6 rotor; speed: 5 revolutions per minute); η=45 000 mPa·s
  • Viscosity of an aqueous solution containing 3% by weight of the self-reversible invert latex and containing 1% o of sodium chloride
  • (Brookfield RVT, No. 3 rotor; speed: 5 revolutions per minute); η=1 280 mPa·s.
  • Example 2 Self-Reversible Invert Latex of the Copolymer
  • Noncrosslinked AM/APTAC/THAM/LA(4EO) (77.7/14.9/7.0/0.4)
  • The following are loaded into a beaker, with stirring:
      • 157.6 g of deionized water,
      • 332.3 g of a commercial solution containing 50% of acrylamide (AM),
      • 123.9 g of a commercial solution containing 75% of acrylamidopropyltrimethylammonium chloride (APTAC)
      • 36.8 g of tris(hydroxymethyl)acrylamidomethane (THAM),
      • 0.45 g of a commercial aqueous solution containing 40% of the sodium salt of diethylenetriaminepentaacetic acid.
  • An oily phase is prepared by successively mixing:
      • 259 g of isohexadecane,
      • 20 g of sorbitan isostearate (MONTANE™ 70),
      • 5 g of HYPERMER™ 2296 (Uniquema),
      • 5 g of tetraethoxylated lauryl acrylate [LA(4EO)],
      • 0.1 g of azobis(isobutyronitrile) (AIBN).
  • The procedure is then carried out according to a procedure identical to that of Example 1 and the desired self-reversible invert latex is obtained.
  • Analysis
  • Polyelectrolyte content: about 29.7% by weight
  • Measurement of Viscosity
  • Viscosity of an aqueous solution containing 3% by weight of the self-reversible invert latex (Brookfield RVT, No. 6 rotor; speed: 5 revolutions per minute); η=48 200 mPa·s
  • Viscosity of an aqueous solution containing 3% by weight of the self-reversible invert latex and containing 1% o of sodium chloride
  • (Brookfield RVT, No. 3 rotor; speed: 5 revolutions per minute); 1=1 760 mPa·s.
  • Example 3 Self-Reversible Invert Latex of the Copolymer
  • Noncrosslinked AM/APTAC/THAM/LA(4EO) (72.7/19.9/7.0/0.4)
  • The following are loaded into a beaker, with stirring:
      • 137.5 g of deionized water,
      • 311 g of a commercial solution containing 50% of acrylamide (AM),
      • 165.2 g of a commercial solution containing 75% by weight of acrylamidopropyltrimethylammonium chloride (APTAC)
      • 36.8 g of tris(hydroxymethyl)acrylamidomethane (THAM),
      • 0.45 g of a commercial aqueous solution containing 40% of the sodium salt of diethylenetriaminepentaacetic acid.
  • An oily phase is prepared by successively mixing:
      • 259 g of isohexadecane,
      • 20 g of sorbitan isostearate (MONTANE™ 70),
      • 5 g of HYPERMER™ 2296 (Uniquema),
      • 5 g of tetraethoxylated lauryl acrylate [LA(4EO)I,
      • 0.1 g of azobis(isobutyronitrile) (AIBN).
  • The procedure is then carried out according to a procedure identical to that of Example 1 and the desired self-reversible invert latex is obtained.
  • Measurement of Viscosity
  • Viscosity of an aqueous solution containing 3% by weight of the self-reversible invert latex (Brookfield RVT, No. 6 rotor; speed: 5 revolutions per minute); η=84 000 mPa·s
  • Viscosity of an aqueous solution containing 3% by weight of the self-reversible invert latex and containing 1% o of sodium chloride
  • (Brookfield RVT, No. 3 rotor; speed: 5 revolutions per minute); η=3 560 mPa·s.
  • Examples of Formulations
  • Example 4 Antistress Hair Care
  • Formula
    Phase A Water qs 100%
    Xanthan gum 0.50%
    Phase B SEPICAP ™ MP 3.00%
    Phase C Composition of Example 1 4.00%
    Phase D Butylene glycol 5.00%
    LANOL ™ 99 5.00%
    SEPICIDE ™ HB 0.30%
    SEPICIDE ™ CI 0.20%
    Perfume 0.20%

    Procedure
  • Disperse the xanthan gum in water with a deflocculating device. Then add SEPICAP™ MP, then the composition of Example 1; disperse it and then add the ingredients of Phase D.
  • Example 5 Restructuring Cream Mask for Stressed and Embrittled Hair
  • Formula
    Phase A MONTANOV ™ 82 3.00%
    LANOL ™ P 6.00%
    AMONYL ™ DM 1.00%
    Isostearyl isononanoate 5.00%
    Composition of Example 2 2.50%
    Phase B Water qs 100%
    Phase C SEPICAP ™ MP 3.00%
    SEPICIDE ™ HB 0.30%
    SEPICIDE ™ CI 0.20%

    Procedure
  • Melt Phase A at 75° C. Heat Phase B to 75° C. Emulsify A in B. At around 40° C., introduce the constituents of Phase C.
  • Example 6 Purifying Gel for the Face
  • Formula
    Phase A MONTALINE ™ C 40 7.00%
    Pearlescent base 2078 5.00%
    Composition of Example 3 2.00%
    Phase B Water qs 100%
  • Example 7 Colouring Shampoo
  • Formula
    Phase A MONTALINE ™ C 40 15.00%
    Disodium cocamphoacetate 5.00%
    Cetrimonium chloride 1.00%
    SEPIPERL ™ N 3.00%
    Composition of Example 2 3.00%
    Phase B Colour qs
    Water qs 100%
  • Example 8 Antimicrobial Soap for the Hands
  • Formula
    Phase A MONTALINE ™ C 40 20.00%
    Glycerin 5.00%
    Composition of Example 2 1.00%
    Phase B Water qs 100%
  • Example 9 Antiseptic Liquid Soap
  • Formula
    Phase A MONTALINE ™ C 40 30.00%
    ORAMIX ™ NS 10 15.00%
    Chlorhexidine digluconate (at 20%) 5.00%
    Composition of Example 1 2.00%
    Phase B Water qs 100%
  • The definitions of the commercial products used in the examples are the following:
  • SEPICIDE™ HB is a preserving mixture comprising phenoxyethanol, methylparaben, ethylparaben, propylparaben and butylparaben, marketed by the company SEPPIC.
  • SEPICIDE™ CI is imidazolidinylurea, marketed by the company SEPPIC.
  • ORAMIX™ NS 10: decyl glucoside marketed by SEPPIC.
  • MONTALINE™ C 40: (cocoammoniumcarbamoyl chloride) marketed by SEPPIC.
  • SEPIPERL™ N: (cocoyl glucoside/cocoyl alcohol) marketed by SEPPIC.
  • MONTANOV™ 82: (cocoyl glucoside/cetearyl alcohol) marketed by SEPPIC.
  • AMONYL™ DM: (quaternium 82) marketed by SEPPIC.
  • SEPICAP™ MP: (sodium cocoyl amino acids/potassium dimethicone copolyol panthenyl phosphate) marketed by SEPPIC.
  • LANOL™ P: (glycol palmitate) marketed by SEPPIC.
  • LANOL™ 99: (isononyl isononanoate) marketed by SEPPIC.

Claims (33)

1. (canceled)
2-15. (canceled)
16. A linear or crosslinked cationic polyelectrolyte composition, wherein said composition comprises copolymerization of at least one cationic monomer with at least one neutral monomer and at least one nonionic surfactant monomer.
17. The composition according to claim 16, wherein said neutral monomer comprises at least one component selected from the group consisting of:
a) acrylamide,
b) methacrylamide,
c) vinylpyrrolidone,
d) diacetone-acrylamide,
e) dimethylacrylamide,
f) (2-hydroxyethyl) acrylate,
g) (2,3-dihydroxypropyl) acrylate,
h) (2-hydroxyethyl) methacrylate, and
i) (2,3-dihydroxypropyl) methacrylate.
18. The composition according to claim 17, wherein said composition further comprises an ethoxylated derivative of said component and the molecular weight of said derivative is in the range of from about 400 to about 1000.
19. The composition according to claim 16, wherein said cationic monomer comprises at least one component selected from the group consisting of:
a) 2,N,N,N-tetramethyl-2-[(1-oxo-2-propenyl)amino]propanammonium chloride (AMPTAC),
b) 2,N,N-trimethyl-2-[(1-oxo-2-propenyl)amino]propanammonium chloride,
c) N,N,N-trimethyl-3-[(1-oxo-2-propenyl)amino]propanammonium chloride (APTAC),
d) “diallyldimethylammonium chloride (DADMAC),
e) N,N, N-trimethyl-2-[(1-oxo-2-propenyl)]ethanammonium chloride,
f) N,N,N-trimethyl-2-[(1-oxo-2-methyl-2-propenyl)]ethanammonium chloride,
g) N-[2-(dimethylamino)-1,1-dimethyl]acrylamide, N-[2-(methylamino)-1,1-dimethyl]acrylamide, 2-(dimethylamino)ethyl acrylate,
h) 2-(dimethylamino)ethyl methacrylate, and
i) N-[3-(dimethylamino)propyl]acrylamide.
20. The composition according to claim 16, wherein said nonionic surfactant monomers are represented by at least one formula selected from the group consisting of:

a) A-C(═C)—O—[(CH2—CH(R1)—O]n—R  (I)
b) R′—[O—CH(R1′)—CH2]n—O—(O═)C-A′-C(═O)—O—[(CH2—CH(R1)—O]nR  (I′)
wherein said n and said n′ each are in the range of from about 1 to about 50;
wherein said A is an unsaturated aliphatic monovalent radical comprising from about 2 to about 6 carbon atoms;
wherein said A′ is an unsaturated aliphatic divalent radical comprising from about 2 to about 6 carbon atoms;
wherein said R1 and said R′1 each comprise at least one at least one component selected from the group consisting of a hydrogen atom, a methyl radical, and an ethyl radical;
wherein said R and said R′ each comprise an aliphatic hydrocarbon radical which is saturated, unsaturated, linear, or branched; and
wherein said aliphatic hydrocarbon radicals of said R and said R′ each further comprise from about a to about 30 carbon atoms.
21. The composition according to claim 20, wherein said A comprises at least one component selected from the group consisting of:
a) vinyl radical, and
b) 2-propenyl radical.
22. The composition according to claim 20, wherein said A′ comprises at least one component selected from the group consisting of:
a) 1,2-ethenediyl radical, and
b) 2-propene-1,2-diyl radical.
23. The composition according to claim 20, wherein said aliphatic hydrocarbon radicals of said R and said R′ each comprise from about 8 to about 18 carbon atoms.
24. The composition according to claim 20, wherein said R and said R′ each comprise at least one linear primary alcohol selected from the group consisting of:
a) octyl,
b) pelargonic,
c) decyl,
d) undecyl,
e) undecenyl,
f) lauryl,
g) tridecyl,
h) myristyl,
i) pentadecyl,
i) cetyl,
k) heptadecyl,
l) stearyl,
m) oleyl,
n) linoleyl,
o) nonadecyl,
p) arachidyl,
q) behenyl, and
r) erucyl.
25. The composition according to claim 20, wherein said R and said R′ each comprise at least one 1-triacontenoic alcohol selected from the group consisting of:
a) octyl,
b) nonyl,
c) decyl,
d) undecyl,
e) 10-undecenyl,
f) dodecyl,
g) tridecyl,
h) tetradecyl,
i) pentadecyl,
j) hexadecyl,
k) heptadecyl,
i) octadecyl,
m) octadecenyl,
n) 10,12-octadecadienyl,
o) 13-docosenyl, and
p) triacontanyl radicals.
26. The composition according to claim 20, wherein said R1 and R′1 each further comprise a hydrogen atom.
27. The composition according to claim 20, wherein said n and n′ each comprise a range of from about 1 to about 10.
28. The composition according to claim 16, wherein said composition comprises:
a) from about 5% to about 35% of said cationic monomer;
b) from about 55% to about 95% of said neutral monomer; and
c) from about 0.1% to about 5% of said nonionic surfactant monomer,
wherein said percentages of each monomer are expressed in terms of monomeric units.
29. The composition according to claim 28, wherein said composition further comprises a non-zero proportion of N-[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]propenamide monomer.
30. The composition according to claim 29, wherein said composition comprises:
a) from about 5% to about 35% of a cationic monomer;
b) from about 35% to about 91% of a neutral monomer;
c) from about 0.1% to about 5% of a nonionic surfactant monomer; and
d) from about 3% to about 20% of a N-[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]propenamide monomer,
wherein said percentages of each monomer are expressed in terms of monomeric units.
31. The composition according to claim 30, wherein said composition is not crosslinked.
32. The composition according to claim 30, wherein said composition is crosslinked.
33. The composition according to claim 32, wherein said crosslinked agent is selected from the group consisting of:
a) diethylene,
b) polyethylenic compounds,
c) diallyloxyacetic acid,
d) sodium salt,
e) triallylamine,
f) trimethylol propanetriacrylate,
g) ethylene glycol dimethacrylate,
h) diethylene glycol diacrylate
i) diallylurea, and
j) methylene bis(acrylamide).
34. The composition according to claim 33, wherein the molar proportion of said crosslinked agent is in the range of from about 0.005% to about 1% of the total composition.
35. The composition according to claim 34, wherein said proportion is in the range of from about 0.01% to about 0.2%.
36. The composition according to claim 35, wherein said proportion is in the range of from about 0.01% to about 0.1%.
37. The composition according to claim 18, wherein said composition may be utilized for at least one function selected from the group consisting of:
a) a thickener or an emulsifier for cosmetic or pharmaceutical formulations;
b) a thickener or an emulsifier for printing pastes for the textile industry;
c) a thickener or ran emulsifier for industrial or household detergents;
d) an additive for the petroleum industry; and
e) a rheology modifier for drilling mud.
38. The composition according to claim 16, wherein said formulation comprise hair care products.
39. A method for preparing a linear or crosslinked cationic polyelectrolyte composition comprising copolymerizing at least one cationic monomer with at least one neutral monomer and at least one nonionic surfactant monomer.
40. A method for preparing a self-reversible invert latex comprising the steps of:
a) emulsifying monomers in an aqueous solution in the presence of at least one water-in-oil type emulsifying agent and a nonionic surfactant monomer;
b) initiating a polymerization reaction by introducing an emulsion formed in step i) and a free radical initiator; and
c) introducing at least one oil-in-water type emulsifying agent when the polymerization reaction is complete.
41. The method according to claim 40, wherein said method further comprises emulsifying additives.
42. The method according to claim 40, wherein said method further comprises adding a coinitiator.
43. The method according to claim 40, wherein the step of introducing at least one oil-in-water type emulsifying agent occurs at a temperature of less than about 50° C.
44. The method according to claim 40, wherein step (ii) further comprises distillation before introducing at least one oil-in-water type emulsifying agent.
45. The method according to claim 40, wherein said polymerization reaction is initiated by an oxidation-reduction pair generating hydrogen sulphite ions (HSO3 ).
46. The method according to claim 45, wherein said hydrogen sulphite ions (HSO3 ) comprises at least one component selected from the group consisting of:
a) cumene hydroperoxide-sodium metabisulphite (Na2S2O5) pair; and
b) cumene hydroperoxide-thionyl-chloride (SOCl2) pair.
US11/321,399 2003-02-13 2005-12-29 Composition and method for preparing novel cationic thickeners Abandoned US20060111509A1 (en)

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US10/777,848 US7015279B2 (en) 2003-02-13 2004-02-12 Composition and method for preparing novel cationic thickeners
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US20100160535A1 (en) 2010-06-24
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ATE527291T1 (en) 2011-10-15
US7015279B2 (en) 2006-03-21
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US7834085B2 (en) 2010-11-16

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