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
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
  • A61K8/042—Gels
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
  • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
  • A61K47/32—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers, poly(meth)acrylates, or polyvinyl pyrrolidone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
  • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
  • A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
• • 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
  • A61K8/0208—Tissues; Wipes; Patches
• • 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
• • 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
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/14—Liposomes; Vesicles
• • 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
  • A61K8/368—Carboxylic acids; Salts or anhydrides thereof with carboxyl groups directly bound to carbon atoms of aromatic rings
• • 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
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/73—Polysaccharides
• • 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
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/73—Polysaccharides
  • A61K8/737—Galactomannans, e.g. guar; 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
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • A61K8/8147—Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
• • 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
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/86—Polyethers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K9/00—Medicinal preparations characterised by special physical form
  • A61K9/0012—Galenical forms characterised by the site of application
  • A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/06—Preparations for care of the skin for countering cellulitis
• • 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
  • 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
  • A61K2800/26—Optical properties
  • A61K2800/262—Transparent; Translucent
• • 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
  • A61K2800/594—Mixtures of polymers

Definitions

• the present invention relates to a cosmetic or pharmaceutical composition, which is in the form of a gel which remains rigid during storage, even when it is contained in jars or the like of large volume but which is capable of becoming fluid again during of the application by giving a cosmetic quality product, that is to say soft and non-sticky.
• phase (A) may be in the form of a thickened or gelled aqueous formulation, an oil-in-water or water-in-oil emulsion, an aqueous dispersion of vesicles consisting of ionic or non-ionic lipid sheets -ionics encapsulating an aqueous phase, or liquid crystals.
• phase (A) may be in the form of a thickened or gelled aqueous formulation, an oil-in-water or water-in-oil emulsion, an aqueous dispersion of vesicles consisting of ionic or non-ionic lipid sheets -ionics encapsulating an aqueous phase, or liquid crystals.
• the external phase is perfectly rigid and stable, in order to avoid any deformation of the drawing or graphics that form (s) the (or) inclusion (s), when the product is transported or handled.
• a composition which consists of a mixture of a polygalactomannan gum and of a copolymer based on an alpha, beta-olefinic unsaturated dicarboxylic acid anhydride and of a selected comonomer among alpha-olefinically unsaturated hydrocarbons and alkyl vinyl ethers.
• This composition is described as providing an exceptionally high viscosity to an aqueous solution, due to a synergistic viscosity effect originating from the interaction of the polygalactomannan and the components of the copolymer.
• This mixture has the advantage of giving a gel having a high viscosity; but it is not specified in this document that some of these mixtures make it possible to obtain gels which remain rigid even when they are contained in jars or the like of large volume, for example greater than 50 ml.
• the thickening and / or gelling agents which are most suitable for the preparation of transparent, colorless gels, are the carboxyvinyl polymers, very well known and widely used in particular in the cosmetic field.
• carboxyvinyl polymers very well known and widely used in particular in the cosmetic field.
• crosslinked polyacrylic acids sold under the names "CARBOPOL 934, 940 and 941" by the company GOODRICH. If a carboxylic polymer is introduced alone, to obtain a flow threshold and a consistency making it possible to prepare a rigid product which can be stored, it is necessary to add an amount of carboxylic polymer such that the product obtained is no longer cosmetic during application.
• the Applicant Company sought a solution to this problem, and it surprisingly discovered that the association of at least one polygalactomannan, at a very low rate, with a gel obtained with a polymer based on carboxyvinyl monomer such as gelling agent, makes it possible to increase the flow threshold and the consistency, that is to say the rigidity, sufficiently so that one can obtain rigid gels which retain this characteristic even when they are contained in jars or the like, of large volume, in particular greater than 50 ml and which, during application, give by shearing a soft and non-sticky product; in other words, during application, the product is not too viscous, which did not make it possible to predict the results observed with the compositions of US-A 4 143 007, US-A 3 658 734 and EP-A 0 346 097.
• Carob gum is preferably used.
• Carob gum is a well-known product used in food and cosmetic products. Carob gum solutions, up to 0.5% by weight, come in a liquid form. At 1% by weight, the liquid is slightly viscous, even gelatinous. Carob gum is known to be able to influence the gelling properties of carrageenan and agar gels, with the aim of making the latter more elastic and increasing their breaking strength.
• the Applicant has now found that, unexpectedly, by combining a polygalactomannan with carboxyvinyl polymers, unexpected modifications of the rheological properties of the latter appear, which make it possible to solve the problems described above, problems which resulted from the use of said carboxyvinyl polymers used alone.
• the gels obtained are transparent and they have completely satisfactory cosmetic characteristics during application. They have an astonishing rheological behavior: after approximately 48 hours of rest, they behave like a solid, in the rheological sense of the term, up to the threshold stress, and the solid / liquid transition is, for these gels, much higher than for the average of the gels. Consequently, they can physically stabilize all suspended phases, even for large volumes.
• the present invention therefore firstly relates to a cosmetic or pharmaceutical composition, which comprises at least one gelled (or stiffened) phase, at least one of said phases comprising at least one carboxyvinyl polymer as gelling agent, characterized by the fact that audit carboxyvinyl polymer is associated with at least one polygalactomannan.
• the polygalactomannan is chosen in particular from the group formed by locust bean gum, guar gum and tara gum. It is preferably carob gum.
• the carboxyvinyl monomer-based polymer is preferably a crosslinked poly acrylic acid, of molecular weight between 800,000 and 5,000,000.
• the carboxyvinyl polymer (s) is (or are) present in particular in an amount of 0.01 to 2% by weight, preferably from 0.1 to 1.0% by weight, of the gelled phase which contains it (s).
• the polygalactomannan (s) it (s) represents (s) in particular from 0.01 to 3% by weight, preferably from 0.01 to 1.5% by weight, of the gelled phase which ( s) contains.
• composition according to the invention may contain salts normally incompatible with the carboxyvinyl polymers.
• these salts there may be mentioned organic salts such as triethanolamine salicylate, sodium benzoate and sodium salicylate.
• the composition according to the invention comprises a gelled phase using the carboxyvinyl polymer (s) and the polygalactomannan (s) in which there is at least one cosmetically or pharmaceutically ingredient active and / or at least one cosmetically or pharmaceutically acceptable additive.
• the composition according to the invention consists of at least two phases, one being a continuous phase known as "external”, gelled thanks to the carboxyvinyl polymer (s), each other phase being a phase called “internal”, in the form of a more or less viscous liquid, presenting itself under the form of at least one inclusion within said external phase;
• an internal phase can be constituted by a liquid, thickened or gelled aqueous formulation, by an oil-in-water or water-in-oil emulsion, by an aqueous dispersion of vesicles consisting of ionic or non-ionic lipid sheets encapsulating an aqueous phase , or by liquid crystals;
• said internal phase (s) may contain at least one cosmetically or pharmaceutically active ingredient and / or at least one cosmetically or pharmaceutically acceptable additive.
• the internal phase (s) represent (advantageously) from 0.1 to 25% by weight of said composition.
• the vesicles mentioned above are well known and prepared from a lipid phase comprising at least one ionic and / or nonionic amphiphilic lipid optionally associated with at least one stabilizing additive, and they contain an encapsulated phase, which may contain cosmetically or pharmaceutically active products, such as moisturizers or soothing agents.
• nonionic lipids which can be used, there may be mentioned:
• n is an average statistical value between 2 and 6; .
• RU represents:
• R2 can take the meaning (a) or (b) given for R ⁇ ; .
• OC2H3 (R3) - is represented by the following structures, taken in mixture or separately:
• R ⁇ takes the meaning (a) given for R ⁇ ;
• esters of optionally polyoxyethylenated polyols are esters of optionally polyoxyethylenated polyols.
• ionic amphiphilic lipids which can be used, mention may be made of:
• phospholipids such as egg or soy lecithin, sphingomyelin, phosphatidylserine, dipalmitoylphosphatidylcholine and hydrogenated lecithins.
• the stabilizing additive is intended, in a known manner, to modify the permeability and / or the surface charge of the vesicles. It is preferably chosen from the group formed by sterols and anionic stabilizers.
• the sterol is advantageously cholesterol.
• the anionic stabilizer is advantageously chosen, on the one hand, from the monosodium or disodium salts (of C14-C22 acyl) glutamates, such as the monosodium salt of N-stearoylglutamic acid, the disodium salts with acyl radicals of the copra and tallow or
• REPLACEMENT SHEET stearoyl and cocoyl radicals can be added to (x) lipid (s) amphiphile (s) both a sterol and an anionic stabilizer.
• the thickening agent (s) used for this purpose is (or are) chosen from the group formed by polyacrylic acids crosslinked, for example those marketed under the name of "CARBOPOL", cellulose derivatives, for example, hydroxypropylcellulose, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, mixtures of cetylstearyl alcohol and cetylstearyl alcohol oxyethylenated (for example, to 33 moles of ethylene oxide), acrylamide / sodium acrylate copolymers and vinypyrrolidone / vinyl acetate copolymers.
• This (or these thickening agent (s)) is (or are) present (s) generally at a rate of 1 to 10% by weight relative to the total weight of the phase which is thickened.
• the active ingredients are chosen in particular from slimming agents, moisturizing agents, fixing agents in the hair field, sun protection agents and any skin and hair care agent.
• additives mentioned above they are chosen in particular from the group formed by emollients, perfumes, pH modifying agents, preservatives and sequestering agents.
• a process for manufacturing the composition as defined above is characterized in that a gelled or stiffened phase is prepared by incorporating an aqueous solution of at least one polygalactomannan in an aqueous gel based on at least a carboxyvinyl polymer, before or after neutralization of the latter or of the latter, for example, with a mineral or organic base, which is optionally incorporated, before or after said neutralization, at least one cosmetically or pharmaceutically active ingredient and / or minus a cosmetically or pharmaceutically acceptable additive, which is diluted with water, where appropriate, to obtain after 1 to 5 days, a transparent and rigid gel, into which one injects, optionally, at least one viscous phase to form at least one inclusion within said gel.
• the invention therefore relates to combinations (carboxyvinyl polymer (s) -galactomannan) making it possible to obtain an increase in the consistency index of the polymer gel of at least 10% of its initial value.
• FIG. 1 of the accompanying drawing shows the influence of the addition of 0.15% by weight of locust bean gum to one.
• the percentage by weight of polyacrylic acid was plotted on the abscissa and, on the ordinate, the consistency index I according to Herschel-Bukley.
• the curves in broken and continuous lines correspond respectively to the gel without addition and with addition of locust bean gum.
• FIG. 2 shows the viscosity V (in poise) measured with the Brookfield-Mobile viscometer 3, at 1 min (hatched area) and at 10 min (unhatched area), as a function of the percentage by weight in locust bean gum, of a emulsion containing 2.35% by weight of triethanolamine salicylate as well as 0.8% of crosslinked polyacrylic acid (CARBOPOL 940).
• locust bean gum makes it possible to compensate for the incompatibility of the salt used with the crosslinked polyacrylic acid, leading to a fluidification of the gel based on said polacrylic acid.
• the association of locust bean gum with it makes it possible to strongly reinforce the apparent viscosity of the gel.
• CARBOPOL 940 by the company “GOODRICH” 0.6 g
• the carob gum powder is swollen in 10 g of water while hot to obtain a whitish liquid.
• CARBOPOL 941 by the company “GOODRICH” 0.7 g
• phase (A) contains the active principle (s) and is dispersed, in the form of inclusions, within phase (B), called external, which consists of a gel according to the present invention.
• Phase (A) must have a viscosity which is greater than 10 poises.
• phase (A) An oil-in-water emulsion.
• the weight ratio of phase (A) to phase (B) is 10/90.
• Each of the phases is formulated as follows: Internal phase (A):
• the carob gum powder is swollen in 10 g of water, hot, to obtain a whitish liquid.
• the two compositions obtained are mixed, diluted with the amount of water remaining, and, after a few days, a transparent and rigid gel is obtained.
• phase (A) injection into a 150 ml jar with a wide opening, containing the gel phase (B) thus obtained, of phase (A).
• phase (A) The oil-in-water emulsion of phase (A) is produced in the conventional manner.
• a jar of phase gel (B) containing phase inclusions (A) is then prepared, in the same way as in Example 3, and the same observations are made as to the stability of the phase inclusions (A) within phase (B).
• EXAMPLE 5 Slimming product of the gel type with inclusions
• phase (A) a water-in-oil emulsion.
• Phase (B) is identical to that of Example 3.
• the weight ratio of phase (A) to phase (B) is 1/99.
• Phase (A) is formulated as follows: Phase (A:
• phase (A) is produced in the conventional manner.
• a jar of phase gel (B) containing phase inclusions (A) is then prepared, in the same way as in Example 3, and the same observations are made as to the stability of the phase inclusions (A) within phase (B).
• EXAMPLE 6 Slimming product of the gel type with inclusions
• phase (A) a water-in-oil emulsion.
• Phase (B) is identical to that of Example 3.
• the weight ratio of phase (A) to phase (B) is 5/95.
• Phase (A) is formulated as follows: Phase (A):
• phase (A) The water-in-oil emulsion of phase (A) is produced in the conventional manner.
• a jar of phase gel (B) containing phase inclusions (A) is then prepared, in the same way as in Example 4, and the same observations are made as to the stability of the phase inclusions (A) within phase (B).
• EXAMPLE 7 Slimming product of the gel type with inclusions
• phase (A) A slimming composition is prepared comprising, as phase (A), an oil-in-water emulsified gel.
• Phase (B) is identical to that of Example 3.
• the weight ratio of phase (A) to phase (B) is 10/90.
• Phase (A) is formulated as follows: Phase ():
• phase (A) The oil-in-water emulsified gel of phase (A) is produced in the conventional manner.
• a jar of phase gel (B) containing phase inclusions (A) is then prepared, in the same way as in Example 4, and the same observations are made as to the stability of the phase inclusions (A) within phase (B).
• EXAMPLE 8 Slimming product of the gel type with inclusions
• a slimming composition comprising, as phase (A), an aqueous dispersion of vesicles with nonionic lipid sheets encapsulating an aqueous phase containing an active agent.
• Phase (B) is the same as that of Example 3.
• the weight ratio of phase (A) to phase (B) is 25/75.
• the cream forming phase (A) is prepared in two stages: First stage: Preparation of an aqueous dispersion of vesicles A lipid phase formulated as follows is used:
• the mixture having the above formulation is melted, with gentle stirring at a temperature of 95-100 ° C., and, into the molten mixture, 16 g of water brought to 90 ° C. are introduced, with slow stirring, after which is stirred vigorously in a turbine fitted with blades, until a whitish gelled mass is obtained.
• Second step The following formulation is produced: - Aqueous dispersion of vesicles obtained in the first step - 50 g - Sodium benzoate 1.5 g
• the mixture is finally thickened by adding a gel consisting of the thickening agent dissolved in water.
• phase (A) is injected into phase (B).
• a pot of slimming product with inclusions is obtained, on which the same observations are made as in the previous examples, as to the stability of the inclusions.
• phase gel (B) is prepared as indicated in Example 3.
• the consistency index was also measured using the Herschel-Bulkley model. The results obtained are shown in FIG. 5. It can be seen that the consistency index of a locust bean gel significantly increases by adding a small amount of locust bean gum.

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• 1990
  • 1990-12-21 FR FR9016099A patent/FR2670673A1/fr active Granted
• 1991
  • 1991-12-19 CA CA002098816A patent/CA2098816C/fr not_active Expired - Fee Related
  • 1991-12-19 DE DE69106727T patent/DE69106727T2/de not_active Expired - Fee Related
  • 1991-12-19 WO PCT/FR1991/001037 patent/WO1992010989A1/fr not_active Ceased
  • 1991-12-19 JP JP50253592A patent/JP3360175B2/ja not_active Expired - Fee Related
  • 1991-12-19 EP EP92902320A patent/EP0563227B1/fr not_active Expired - Lifetime

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