WO2014013194A1 - Utilisation d'une creme de protection contre les effets des agents chimiques agressifs en contact avec la peau - Google Patents
Utilisation d'une creme de protection contre les effets des agents chimiques agressifs en contact avec la peau Download PDFInfo
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- WO2014013194A1 WO2014013194A1 PCT/FR2013/051717 FR2013051717W WO2014013194A1 WO 2014013194 A1 WO2014013194 A1 WO 2014013194A1 FR 2013051717 W FR2013051717 W FR 2013051717W WO 2014013194 A1 WO2014013194 A1 WO 2014013194A1
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- emulsion
- weight
- skin
- emulsion according
- aggressive chemical
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- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 229920001983 poloxamer Chemical class 0.000 description 1
- 229960000502 poloxamer Drugs 0.000 description 1
- 229920002401 polyacrylamide Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002851 polycationic polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 229940068977 polysorbate 20 Drugs 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229940114930 potassium stearate Drugs 0.000 description 1
- ANBFRLKBEIFNQU-UHFFFAOYSA-M potassium;octadecanoate Chemical compound [K+].CCCCCCCCCCCCCCCCCC([O-])=O ANBFRLKBEIFNQU-UHFFFAOYSA-M 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 229940079889 pyrrolidonecarboxylic acid Drugs 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 239000003001 serine protease inhibitor Substances 0.000 description 1
- 231100000152 severe skin burn Toxicity 0.000 description 1
- 229940057910 shea butter Drugs 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000035483 skin reaction Effects 0.000 description 1
- 231100000430 skin reaction Toxicity 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229940075554 sorbate Drugs 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229940114926 stearate Drugs 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 210000000437 stratum spinosum Anatomy 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 235000010384 tocopherol Nutrition 0.000 description 1
- 229960001295 tocopherol Drugs 0.000 description 1
- 229930003799 tocopherol Natural products 0.000 description 1
- 239000011732 tocopherol Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- LADGBHLMCUINGV-UHFFFAOYSA-N tricaprin Chemical compound CCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCC)COC(=O)CCCCCCCCC LADGBHLMCUINGV-UHFFFAOYSA-N 0.000 description 1
- MDYOLVRUBBJPFM-UHFFFAOYSA-N tropolone Chemical compound OC1=CC=CC=CC1=O MDYOLVRUBBJPFM-UHFFFAOYSA-N 0.000 description 1
- 229940045136 urea Drugs 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical class [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- 150000003754 zirconium Chemical class 0.000 description 1
- GVJHHUAWPYXKBD-IEOSBIPESA-N α-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/69—Boron compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/195—Carboxylic acids, e.g. valproic acid having an amino group
- A61K31/197—Carboxylic acids, e.g. valproic acid having an amino group the amino and the carboxyl groups being attached to the same acyclic carbon chain, e.g. gamma-aminobutyric acid [GABA], beta-alanine, epsilon-aminocaproic acid or pantothenic acid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/195—Carboxylic acids, e.g. valproic acid having an amino group
- A61K31/197—Carboxylic acids, e.g. valproic acid having an amino group the amino and the carboxyl groups being attached to the same acyclic carbon chain, e.g. gamma-aminobutyric acid [GABA], beta-alanine, epsilon-aminocaproic acid or pantothenic acid
- A61K31/198—Alpha-amino acids, e.g. alanine or edetic acid [EDTA]
-
- 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
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/16—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing nitrogen, e.g. nitro-, nitroso-, azo-compounds, nitriles, cyanates
- A61K47/18—Amines; Amides; Ureas; Quaternary ammonium compounds; Amino acids; Oligopeptides having up to five amino acids
- A61K47/183—Amino acids, e.g. glycine, EDTA or aspartame
-
- 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
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/20—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing sulfur, e.g. dimethyl sulfoxide [DMSO], docusate, sodium lauryl sulfate or aminosulfonic acids
-
- 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
- A61K9/0014—Skin, i.e. galenical aspects of topical compositions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/16—Emollients or protectives, e.g. against radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/08—Antiallergic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier 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
-
- 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
- A61K2800/51—Chelating agents
Definitions
- the present invention relates to the field of protection products against aggressive chemical agents that can come into contact with the skin.
- the frequency of skin irritation is a function of both individual susceptibility and the frequency and duration of exposure to aggressive chemicals. Important factors are, for example, work in a humid environment, with detergents, acids, bases, oxidants, solvents, etc. In addition, it should be emphasized that chronic irritant dermatitis is also an important risk factor for secondary sensitization.
- infiltration of aggressive chemical agents may occur either because of a tear in the glove or because drops of aggressive chemical may come into contact with the skin through the glove sleeve or before or after wearing gloves.
- a cream intended to build a physical barrier against certain specific substances that are slightly aggressive or certain specific allergens, makes it possible to protect the skin against these agents, especially when they come into contact with the skin before or after wearing gloves.
- the present inventors have formulated a cream for protecting the skin against all types of aggressive chemical agents.
- the present invention relates to the use of a cream or emulsion for the protection of the skin against aggressive chemical agents, said cream comprising an amphoteric chelating agent. It also relates to said emulsion.
- emulsion means an emulsion selected from the group consisting of an oil-in-water emulsion, a water-in-oil emulsion, a multiple emulsion, a microemulsion, a nanoemulsion, and mixtures thereof.
- the present invention relates to the use of an emulsion for protecting the skin against aggressive chemical agents, and especially against allergens.
- the present invention relates to the use of said emulsion for the prevention of contact dermatitis.
- the present invention relates to said emulsion.
- the present invention relates to the process for preparing said emulsion.
- a more detailed description of some preferred embodiments of the invention is given below.
- the present invention relates to the use of an emulsion for protecting the skin against aggressive chemical agents, said emulsion comprising at least one amphoteric chelating agent comprising a complex based on aluminum and ethylene diamine tetraacetic acid deprotonated, having the general formula [Al (Y) B n ] c ' D c with B representing OH ⁇ , ⁇ 2 ⁇ , H + , Y representing a tetracarboxylate which can be protonated four times to form ethylene diamine tetraacetic acid, n representing a an integer equal to 0, 1, 2 or 3, D being a counter-ion, preferably Na + , where c is an integer equal to 0, 1, 2 or 3 and c 'is a relative number having the same absolute value that C.
- This amphoteric chelating agent may preferably be formed by a quasi-stoichiometric combination of the aluminum ion Al 3+ , the ligand Y and a stabilizing agent chosen from OH ⁇ , B0 2 ⁇ or H + .
- a stabilizing agent chosen from OH ⁇ , B0 2 ⁇ or H + .
- cream is understood to mean an emulsion, that is to say, an oil-in-water emulsion, a water-in-oil emulsion, a multiple emulsion, a microemulsion, or a nanoemulsion.
- said complex based on aluminum and Y is stabilized by a weak base such that the amino acids chosen from the group comprising glycine, histidine, arginine, lysine, phenylalanine, alanine, isoleucine, leucine, methionine, proline, valine, tryptophan, serine, glutamine, cystine and mixtures thereof.
- Glycine is quite appropriate.
- the amount of amphoteric chelating agent present in said emulsion is 0.01 to 5%, preferably 0.1 to 2% and more preferably 0.2 to 1% by weight of the total weight of the emulsion. An amount of less than 0.01% does not provide a sufficient protective effect. Beyond 5%, no noticeable improvement is observed.
- the emulsion is used for topical application, more particularly cutaneous.
- the present inventors are of the opinion that the emulsion according to the invention makes it possible to provide a physical and chemical barrier against aggressive chemical agents. More particularly, after application and drying, a water-free barrier layer covers the skin thus ensuring a physical barrier between the skin and the external environment, the amphoteric chelating agent ensuring a chemical barrier by chelating or chemically reacting with the chemical agents coming in contact with this layer of cream.
- the emulsion must completely cover the area of skin to be protected, usually the hands. It should be applied regularly over the entire surface, from about 0.5 to 5 mg / cm 2, preferably about 1 to 3 mg / cm 2, more preferably still from about 2 mg / cm 2 .
- the product be applied at least 5 minutes, preferably at least 10 minutes and more preferably at least 10 minutes. 15 minutes before contact with aggressive chemicals.
- the protective layer formed on the skin will be more or less durable.
- the application of the cream according to the invention will have to be renewed after each washing of hands.
- the protective layer may be effective up to 4 hours. If the activity causes a lot of friction, it will be necessary to renew the application more frequently. Thus, it is recommended to renew the application of the emulsion according to the invention at least every 4 hours or after each hand washing.
- aggressive chemical agents include irritating chemicals and allergenic products.
- Irritant chemicals include substances and mixtures which belong to categories H311, H312, H314, H315, H317 as defined in the CLP Regulation (Regulation (EC) No 1272/2008 on classification, labeling and packaging of substances and mixtures). They also include products with a pH of 2 to 11.5.
- the product H311 is defined as toxic by dermal contact.
- H312 is defined as harmful by skin contact.
- H314 is defined as causing severe skin burns and eye damage.
- H315 is defined as causing skin irritation.
- H317 is defined as possibly causing skin allergy.
- the emulsion according to the invention satisfies the standard NFS75601.
- This standard concerns protective creams that apply preventively to the skin to provide temporary protection against moderately aggressive.
- Moderately aggressive substances are substances or preparations which are not classified as highly toxic, toxic, corrosive or allergenic by the labeling regulations for dangerous substances.
- This standard sets the characteristics of these protective creams and their limits of use. It does not apply to preparations intended to protect against possible physical or microbiological risks.
- the emulsion can be used effectively against water-soluble or water-insoluble irritant chemicals.
- water-soluble irritating products mention may be made of acids, bases, chlorinated products, etc. More particularly, these products may be chosen from the group comprising sodium hydroxide of pH ⁇ 11.50, hydrochloric acid with pH ⁇ 2.00, sodium hypochlorite up to 12%, sodium lauryl sulphate in aqueous solution at a concentration of up to 5% and mixtures thereof.
- non-water-soluble irritants mention may be made of: long-chain hydrocarbon solvents, chlorinated solvents and mixtures thereof.
- such products may be selected from the group consisting of mineral oil, white spirit (C9-C16 alkane / cycloalkane) and mixtures thereof.
- Allergenic products include organic substances, particles or bodies (atoms, molecules, proteins, glycoproteins or any other macromolecular organic substance of complex structure) which, in contact with the skin, are capable of causing an allergic reaction in a previously sensitized subject . This allergic reaction can lead to damage to the skin or even a pathological phenomenon.
- allergens chosen from the group comprising heavy metals (for example: Al, As, Cd, Cr, Hg, Ni, Pb, Sr, Te), tetramethylthiuram disulphide, 2-mercaptobenzothiazole, benzyl carbamate, bisphenol, ethyl acrylate, araldite 506 epoxy resin, hevein, methanal, protein-type allergens (such as profilins, tropomyosins, LTPs) (lipid transfer proteins), bet v 1-like PR-10 proteins, polcalcines, beta parvalbumines, 2s albumin, beta expansins, polygalacturonases, Ag5 (antigens 5), albumins, caseins , lipocalins, group 5 grasses, they globulins, 7s vicilin-like globulins, group 4 grasses, papain-like cysteine proteases, phospholipases Al, serine
- heavy metals for example: Al, As
- morphology analyzes and studies allowing the determination of interleukins including IL-6 and IL-8.
- Cell morphology analysis was performed by a Masson trichrome stain, Goldner variant. The presence of morphological changes indicates that the test substance has caused strong irritation which has thus modified the cell structure.
- interleukin-based assay The concentration of interleukin IL-6 (produced first) and IL-8 (produced second-time) in the dermis is a function of the inflammation process. skin. After application of the emulsion to the skin, no significant increase in the interleukin 6 or 8 content was observed after contacting the skin area covered by the emulsion with the following agents: sodium hydroxide at pH 11.50, hydrochloric acid at pH 2.00, 12% sodium hypochlorite, 5% sodium lauryl sulphate, mineral oil, and White spirit (C9-C16 Alkane) / cycloalkane).
- Langerhans cells are dendritic cells that are found in the epidermis and contain Birbeck granules. They normally exist in lymph nodes and in the skin in the stratum spinosum of the epidermis. These cells specialized in antigen capture activate when the skin is brought into contact with an allergen. This presents a first sign of the beginning of an awareness process. Immunolabelling methods, in particular CDla surface receptors of Langerhans cells make it possible to measure their number and to observe their migration from the epidermis to the dermis.
- the preventive composition of the invention is effective if the antigen is stopped, that is to say not captured by epidermal Langerhans cells. These will not migrate to the dermis.
- the effectiveness of the composition according to the invention is therefore measured by the number of non-migrating Langerhans cells per centimeter of epidermis.
- the present invention relates to an emulsion for use in the prevention of contact dermatitis.
- Irritative contact dermatitis or IBD and allergic contact dermatitis or DCA are distinguished.
- irritative dermatitis may be acute or chronic.
- contact dermatitis within the meaning of the invention is meant all these types of cutaneous reactions.
- the emulsion according to the invention prevents direct contact of the skin with said agents and thus helps to avoid contact dermatitis by building a physical barrier by forming a film free of water and also a chemical barrier using both the properties of amphoteric chelating agent and the reactive properties of the cream according to the invention.
- the emulsion allows a prevention of contact dermatitis, caused by certain chemical agents or even by wearing protective gloves.
- the emulsion according to the invention can be applied daily.
- the conditions of use are identical to those described above.
- said emulsion is an oil-in-water emulsion.
- the emulsion comprises an aqueous phase, an oily phase and at least one surfactant.
- the surfactant can be hydrophobic with a HLB of 3 to 10 (for emulsions which are not oil-in-water) or hydrophilic with a HLB of 11 to 18.
- This surfactant is selected from the group consisting of ethoxylated fatty alcohols, fatty acids and esters (e.g.
- ethoxycarboxylates for example: sodium / potassium stearate, alkyl carboxylic acid, carboxylic acid alkyl ether, polygly
- the amount of surfactant is from 0.1% to 10% by weight, preferably from 0.5 to 5% by weight, and more preferably from 1 to 3% by weight of the total weight of the emulsion. .
- the oily phase comprises synthetic or natural waxes or oils, selected from the group comprising Carnauba extract, beeswax, shea butter, triglycerides, stearines, fatty acid esters (for example: cetearyl alcohols, dicaprylic ethers).
- cetyl palmitate dicaprylic carbonates, cetearyl isononanates, distearyltricarbonate dimers, etc.
- silicone oils zinc stearates, polyisobutenes, octyldodecanol, octyldecylxylosides, fatty alcohols, fatty acids (eg example: lauric acid, myristic acid, stearic acid, etc.), vegetable oils (for example: sunflower oil, jojoba oil, cocos nucifera oil, soybean oil, almond oil, etc.) and mixtures thereof.
- the oily phase represents up to 98% by weight, especially up to 70% by weight, preferably 5 to 50% by weight, and even more preferably from 10 to 20% by weight of the total weight of the emulsion.
- the aqueous phase essentially comprises water, preferably purified water. It is present in a proportion of 1 to 90% by weight, preferably 30 to 80% by weight, and more preferably still 50 to 70% by weight of the total weight of the emulsion.
- the emulsion according to the invention may include various agents conferring advantageous properties for the skin. These agents, according to their solubility are present either in the aqueous phase or in the oily phase. These agents include moisturizing and emollient agents, antiperspirants, etc.
- the moisturizing and emollient agents may be chosen from the group comprising allantoin, polyol (for example glycerol, glycerol polymers, propylene glycol, sorbitol, etc.), plant extracts (for example extracts of aloe vera, chamomile, cucumber). , calendula, etc.), hyaluronic acid, pyrrolidone carboxylic acid, urea, chitosan, tocopherol, panthenol, butylene glycol, phospholipid, linoleic acid, ⁇ -linoleic acid, alpha-bisabolol, and mixtures thereof.
- polyol for example glycerol, glycerol polymers, propylene glycol, sorbitol, etc.
- plant extracts for example extracts of aloe vera, chamomile, cucumber). , calendula, etc.
- hyaluronic acid for example extracts of
- the concentration of moisturizing and emollient agents is from 0.1 to 20% by weight, preferably from 0.5 to 10% by weight, and more preferably from 1 to 5% by weight of the total weight of the emulsion.
- the antiperspirants may be selected from the group consisting of aluminum salts, preferably aluminum sesqui-hydrochloride, aluminum and zirconium salts, aluminum-zirconium octachlorohydrex glycine complexes and mixtures thereof.
- the antiperspirant agent concentration is 0.1 to 50% by weight, preferably 10 to 30% by weight, and more preferably 15% by weight of the total weight of the emulsion.
- the emulsion may also include texture enhancing additives such as conditioners and thickeners.
- Conditioners may be selected from the group consisting of polycationic polymers designated according to the INCI polyquaternium nomenclature, quaternized gums, quaternized phospholipids, and mixtures thereof.
- the conditioner concentration is 0.1 to 20% by weight, preferably 0.5 to 10% by weight, and more preferably still 0.5 to 5% by weight of the total weight of the emulsion.
- the thickeners may be selected from the group consisting of: polymers and copolymers of acrylic acid, crosslinked polymers of C 10-30 alkyl acrylate, polyacrylamide, poloxamer, cellulose derivatives (esters and ethers), silicas, silica, silicates, such as magnesium-aluminum silicates, chitin and its derivatives, gelatin, xanthan, dextran, gellan, carrageenans, alginates, agar-agar, agar, pectin, acacia gum, karaya gum, gum tragacanth, gum arabic , guar gum, locust bean gum, starch and its derivatives, scleroglucan and mixtures thereof.
- the concentration of thickener is from 0.01 to 10% by weight, preferably from 0.1 to 5% by weight, and more preferably from 0.5 to 3% by weight of the total weight of the emulsion.
- the emulsion may also include preservatives. These may be chosen from the group comprising: para-hydroxybenzoic ester, isothiazolinone, imidazolidinyl urea, diazolidinyl urea, bromo-nitro-propanediol, phenoxyethanol, sorbic acid and its salts, benzoic acid and its salts, phenoxyethanol, benzyl alcohol, and their mixtures.
- the concentration is the one authorized in cosmetics.
- the formulation may include cosmetic and food colorants, fragrances, flavors, pH control agents (eg, citric acid, lactic acid, phosphoric acid, sodium hydroxide, potassium hydroxide, amino-methyl-propanol, triethanolamine , etc.) and their mixtures.
- Their concentration may be from 0.1 to 50% by weight, preferably from 10 to 30% by weight, and more preferably still from 15% by weight of the total weight of the emulsion.
- the present invention relates to the process for preparing said emulsion.
- Said emulsion may be prepared according to any technique known to those skilled in the art. However, in order to optimize its stability, it is first necessary to prepare the aqueous phase by incorporating the amphoteric chelating agent therein by cold mixing and then to incorporate this preparation into the oily phase before mixing for the purpose of emulsification.
- the aqueous phase should be prepared by incorporating the amphoteric chelator therein by hot mixing and then incorporating this preparation into the oily phase before mixing for emulsification.
- the hot mixture can be carried out at 50-90 ° C, preferably at 60-80 ° C and more preferably at 70 ° C.
- the stability is satisfactory if no phase shift is observed after storage of the emulsion at ambient temperature for 6 months, preferably for 1 year.
- amphoteric chelating agent used has the following formula: [AIYBO 2 ] 2 -Na + 2.
- EXAMPLE 1 EMULSION FOR EXTERNAL USE
- Brookfield viscosity 18000 cP measured at a temperature of 20 (+/- 1) ° C and with a mobile speed at 3/20 rpm
- Citric acid 0, 001g
- Brookfield viscosity of 21000 cP measured at a temperature of 20 (+/- 1) ° C and with a mobile speed at 3/20 rpm
- Brookfield viscosity of 14500 cP measured at a temperature of 20 (+/- 1) ° C and with a mobile speed at 3/20 rpm
- Brookfield viscosity of 12000 cP measured at a temperature of 20 (+/- 1) ° C and with a mobile speed at 3/20 rpm
- Skin explants with an average diameter of 10 mm are prepared from an abduction of a 49-year-old Caucasian woman. These explants are kept alive in a culture medium BEM (BIO-EC explant medium) at 37 ° C in humid atmosphere enriched with 5% CO 2.
- BEM BIO-EC explant medium
- Example 1 the cream of Example 1 above is applied to the skin explants at a dosage of 3 mg / cm 2 . It is allowed to dry for 15 minutes. Next, 25 ⁇ l of a solution of an irritant selected from the above list is applied to the protected skin explants (test) and is also applied to unprotected skin explants (control). It is left to rest until T 4h , which represents 4 hours of exposure to irritants.
- explants protected by the cream but not brought into contact with a test substance are prepared in the same way.
- the effectiveness of protection against irritants is measured by cell morphology analysis after Masson trichrome staining, Goldner variant. The presence of morphological changes indicates that the test substance has caused a strong irritation which has thus modified the structure of the cells.
- . 1 / epidermis has 4 to 5 cell layers with good morphology and mild spongiosis in the basal layers. The junction relief between the dermis and the epidermis is clear.
- the papillary dermis has a dense network of thick collagen fibers. It is well cellularized without apparent histological lysis zone.
- the epidermis of the unprotected explants presents 4-5 cell layers with clear morphological changes. These changes are characterized by significant cytoplasmic denaturation, nuclear pyknosis, and distinct spongiosis in the stratum germinativum.
- Example 1 The absence or low level of cellular change as well as the low concentration of interleukins have demonstrated that the oil-in-water emulsion of Example 1 effectively protects the skin against the irritants tested.
- Explants are prepared as described in Example 5 above.
- Heavy metals Al, As, Cd, Cr, Hg, Ni, Pb, Sr, Te
- V Ref 0C467028 Merck
- Example 2 At To, the cream of Example 2 above was applied to the skin explants at a dosage of 3 mg / cm 2 . It is allowed to dry for 15 minutes. Next, 25 ⁇ l of a solution of one of the allergens selected from the list above are applied to the cream-protected skin explants (test) and are also applied to unprotected (blank) skin explants. . It is left to rest until T 4h , which represents 4 hours of exposure to allergens without washing or abrasive friction.
- explants protected by the cream but not brought into contact with a test substance are prepared in the same way.
- the protective efficacy against allergens is measured by immuno-staining analysis of CDla receptors of Langerhans cells.
- the paraffin sections of Langerhans cells are immunostained with monoclonal anti-CD1a antibodies (ref IM1590, clone O10, Beckman Coulter) for 1 hour at room temperature. This immunostaining is enhanced by a streptavidin / biotin system (Vector, PK-7200) and revealed using VIP (Vector, SK-4600).
- the nuclei are counterstained by Masson hemalum. Langerhans cells are counted on each section along the epidermis. The length of each section is measured by the Olympus Cell software and the average number of Langerhans cells per centimeter of epidermis is calculated.
- the protective efficacy against allergens is measured by the immunostain analysis of CDla.
- the paraffin sections of Langerhans cells are immunostained with anti-CDla monoclonal antibodies (ref IM1590, clone O10, Beckman Coulter) for 1 hour at ambient temperature. This immunostaining is enhanced by a streptavidin / biotin system (Vector, PK-7200) and revealed using VIP (Vector, SK-4600).
- the nuclei are counterstained by Masson hemalum. Langerhans cells are counted on each section along the epidermis. The length of each section is measured by the Olympus Cell software and the average number of Langerhans cells per centimeter of epidermis is calculated.
- the effectiveness of protection against the allergen is measured by the number of Langerhans cells that have not migrated.
- Samples are taken for all explants at T 0 and T 4h and are microphotographed.
- Figure 3 shows the explants at T 0 and Figure 4 at T 4h for hevein.
- the stratum corneum is thin, compact and moderately filled with keratin on the surface and remarkably below.
- the epidermis has 4-5 cell layers with good morphology and mild spongiosis on stratum germinativum.
- the junction relief between the dermis and the epidermis is marked.
- the papillary dermis has fairly thick fibers that build a dense network and is well cellularized without any apparent histological lysis zone.
- the epidermis of unprotected explants presents 4-5 cell layers with remarkable morphological changes. These changes are characterized by marked cytoplasmic denaturation (protein alteration), marked pycnosis and marked spongiosis on stratum germinativum.
- Example 2 The absence or low level of cellular change as well as the low concentration of interleukins have demonstrated that the cream of Example 2 effectively protects the skin against allergens tested.
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Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES13747451.6T ES2690060T3 (es) | 2012-07-18 | 2013-07-17 | Utilización de una crema de protección contra los efectos de los agentes químicos agresivos en contacto con la piel |
US14/415,428 US10953024B2 (en) | 2012-07-18 | 2013-07-17 | Use of a cream that protects against the effects of aggressive chemical agents in contact with the skin |
PL13747451T PL2874661T3 (pl) | 2012-07-18 | 2013-07-17 | Zastosowanie kremu ochronnego przeciwko działaniu środków chemicznych agresywnych w kontakcie ze skórą |
BR112015001018-0A BR112015001018B1 (pt) | 2012-07-18 | 2013-07-17 | Uso de um creme que protege contra os efeitos de agentes químicos agressivos em contato com a pele |
MX2015000785A MX359747B (es) | 2012-07-18 | 2013-07-17 | Uso de una crema que protege contra los efectos de agentes quimicos agresivos en contacto con la piel. |
SI201331206T SI2874661T1 (sl) | 2012-07-18 | 2013-07-17 | Uporaba kreme, ki varuje pred učinki agresivnih kemičnih snovi v stiku s kožo |
NZ703258A NZ703258A (en) | 2012-07-18 | 2013-07-17 | Use of a cream that protects against the effects of aggressive chemical agents in contact with the skin |
CN201380037758.6A CN104507501A (zh) | 2012-07-18 | 2013-07-17 | 防护与皮肤接触的化学侵蚀剂作用的霜的用途 |
EP13747451.6A EP2874661B1 (fr) | 2012-07-18 | 2013-07-17 | Utilisation d'une creme de protection contre les effets des agents chimiques agressifs en contact avec la peau |
DK13747451.6T DK2874661T3 (en) | 2012-07-18 | 2013-07-17 | APPLICATION OF A CREAM THAT PROTECTS AGAINST THE EFFECTS OF AGGRESSIVE CHEMICALS IN CONTACT WITH THE SKIN |
CA2878650A CA2878650C (fr) | 2012-07-18 | 2013-07-17 | Utilisation d'une creme de protection contre les effets des agents chimiques agressifs en contact avec la peau |
IN10924DEN2014 IN2014DN10924A (fr) | 2012-07-18 | 2013-07-17 | |
AU2013291792A AU2013291792B2 (en) | 2012-07-18 | 2013-07-17 | Use of a cream that protects against the effects of aggressive chemical agents in contact with the skin |
US17/172,434 US20210275553A1 (en) | 2012-07-18 | 2021-02-10 | Use of a cream that protects against the effects of aggressive chemical agents in contact with the skin |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1256939 | 2012-07-18 | ||
FR1256939A FR2993466B1 (fr) | 2012-07-18 | 2012-07-18 | Utilisation d'une creme de protection contre les effets des agents chimiques agressifs en contact avec la peau |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US14/415,428 A-371-Of-International US10953024B2 (en) | 2012-07-18 | 2013-07-17 | Use of a cream that protects against the effects of aggressive chemical agents in contact with the skin |
US17/172,434 Continuation US20210275553A1 (en) | 2012-07-18 | 2021-02-10 | Use of a cream that protects against the effects of aggressive chemical agents in contact with the skin |
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WO2014013194A1 true WO2014013194A1 (fr) | 2014-01-23 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/FR2013/051717 WO2014013194A1 (fr) | 2012-07-18 | 2013-07-17 | Utilisation d'une creme de protection contre les effets des agents chimiques agressifs en contact avec la peau |
PCT/FR2013/051718 WO2014013195A1 (fr) | 2012-07-18 | 2013-07-17 | Utilisation d'un agent chelatant amphotere pour prevenir les allergies de contact |
Family Applications After (1)
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PCT/FR2013/051718 WO2014013195A1 (fr) | 2012-07-18 | 2013-07-17 | Utilisation d'un agent chelatant amphotere pour prevenir les allergies de contact |
Country Status (18)
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US (3) | US10953024B2 (fr) |
EP (2) | EP2874604B1 (fr) |
CN (4) | CN104507501A (fr) |
AU (2) | AU2013291792B2 (fr) |
BR (2) | BR112015001018B1 (fr) |
CA (2) | CA2878650C (fr) |
DK (2) | DK2874661T3 (fr) |
ES (2) | ES2690060T3 (fr) |
FR (1) | FR2993466B1 (fr) |
IN (1) | IN2014DN10924A (fr) |
MX (2) | MX356811B (fr) |
NO (1) | NO2874604T3 (fr) |
NZ (2) | NZ703258A (fr) |
PL (2) | PL2874661T3 (fr) |
PT (1) | PT2874604T (fr) |
SI (1) | SI2874661T1 (fr) |
TR (1) | TR201815143T4 (fr) |
WO (2) | WO2014013194A1 (fr) |
Cited By (1)
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---|---|---|---|---|
WO2020169931A1 (fr) * | 2019-02-22 | 2020-08-27 | Prevor International | Composition pour enlever des residus chimiques et ses utilisations |
Citations (3)
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FR2604900A1 (fr) * | 1986-10-08 | 1988-04-15 | Blomet Marie Claude | Solution physiologique pour le lavage des parties du corps humain ayant ete mises en contact avec un acide fluorhydrique et concentre pour sa preparation |
US5763486A (en) * | 1993-04-19 | 1998-06-09 | Marie-Claude Blomet epouse Meyer | Process for preparing a composition for the treatment of thermal or chemical burns |
WO2001093858A2 (fr) * | 2000-06-07 | 2001-12-13 | Meyer Marie Claude | Utilisation d'un complexe d'aluminium et de ligand ethylenediamine-tetraacetique pour la prevention et/ou le traitement des urticaires |
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US5091171B2 (en) * | 1986-12-23 | 1997-07-15 | Tristrata Inc | Amphoteric compositions and polymeric forms of alpha hydroxyacids and their therapeutic use |
US5665804A (en) * | 1996-02-05 | 1997-09-09 | Dow Corning Corporation | Silicone latex solvent thickening |
SE9604610D0 (sv) * | 1996-12-16 | 1996-12-16 | Noviscens Ab | Medical composition |
US6242042B1 (en) * | 1998-09-14 | 2001-06-05 | Lrc Products Ltd. | Aqueous coating composition and method |
US6582683B2 (en) * | 2000-01-04 | 2003-06-24 | Skinvisible Pharmaceuticals, Inc. | Dermal barrier composition |
GB0403702D0 (en) * | 2004-02-19 | 2004-03-24 | Boots Co Plc | Skincare compositions |
WO2005040114A1 (fr) * | 2003-10-14 | 2005-05-06 | Oxagen Limited | Composes presentant une activite antagoniste de crth2 |
GB0324084D0 (en) * | 2003-10-14 | 2003-11-19 | Oxagen Ltd | Compounds |
US20090019224A1 (en) * | 2005-02-02 | 2009-01-15 | Pocrass Alan L | Data Storage and Transfer Device and Method |
ES2720332T3 (es) * | 2008-01-18 | 2019-07-19 | Vystar Corp | Látex de caucho natural con alergenicidad reducida y método de fabricación |
WO2011041680A2 (fr) * | 2009-10-02 | 2011-04-07 | The Brigham And Women's Hospital, Inc. | Compositions et procédés de prophylaxie pour l'eczéma de contact |
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2012
- 2012-07-18 FR FR1256939A patent/FR2993466B1/fr active Active
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- 2013-07-17 NZ NZ703258A patent/NZ703258A/en unknown
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- 2013-07-17 ES ES13747452.4T patent/ES2667709T3/es active Active
- 2013-07-17 EP EP13747452.4A patent/EP2874604B1/fr active Active
- 2013-07-17 WO PCT/FR2013/051717 patent/WO2014013194A1/fr active Application Filing
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US5763486A (en) * | 1993-04-19 | 1998-06-09 | Marie-Claude Blomet epouse Meyer | Process for preparing a composition for the treatment of thermal or chemical burns |
WO2001093858A2 (fr) * | 2000-06-07 | 2001-12-13 | Meyer Marie Claude | Utilisation d'un complexe d'aluminium et de ligand ethylenediamine-tetraacetique pour la prevention et/ou le traitement des urticaires |
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WO2020169931A1 (fr) * | 2019-02-22 | 2020-08-27 | Prevor International | Composition pour enlever des residus chimiques et ses utilisations |
FR3093001A1 (fr) * | 2019-02-22 | 2020-08-28 | Prevor International | Composition pour enlever des residus chimiques et ses utilisations |
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