WO2014009153A2 - Crème solaire - Google Patents

Crème solaire Download PDF

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Publication number
WO2014009153A2
WO2014009153A2 PCT/EP2013/063348 EP2013063348W WO2014009153A2 WO 2014009153 A2 WO2014009153 A2 WO 2014009153A2 EP 2013063348 W EP2013063348 W EP 2013063348W WO 2014009153 A2 WO2014009153 A2 WO 2014009153A2
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WO
WIPO (PCT)
Prior art keywords
composition
sunscreen
organic
weight
group
Prior art date
Application number
PCT/EP2013/063348
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English (en)
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WO2014009153A3 (fr
Inventor
Mohan Vijaykumar Chavan
Ashish Anant Vaidya
Original Assignee
Unilever N.V.
Unilever Plc
Conopco, Inc., D/B/A Unilever
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Application filed by Unilever N.V., Unilever Plc, Conopco, Inc., D/B/A Unilever filed Critical Unilever N.V.
Publication of WO2014009153A2 publication Critical patent/WO2014009153A2/fr
Publication of WO2014009153A3 publication Critical patent/WO2014009153A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—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
    • A61K8/89—Polysiloxanes
    • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • A61K8/894—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
    • 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
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Definitions

  • the invention relates to a sunscreen composition, especially to a composition that gives good Sun Protection Factor (SPF).
  • SPF Sun Protection Factor
  • Solar radiation includes about 5% ultraviolet (UV) radiation, wavelength of which is between 200 nm and 400 nm. It is further classified into three regions: from 320 to 400 nm (UV-A), 290 to 320 nm (UV-B) and from 200 to 290 nm (UV-C). A large part of UV-C radiation is absorbed by the ozone layer. Scientific studies have indicated that exposure to UV-A and UV-B radiation for short period causes reddening of the skin and localized irritation, whereas continued and prolonged exposure can lead to sunburn, melanoma and formation of wrinkles. It is also reported that UV radiation causes significant damage to hair. Therefore, it is desirable to protect the skin and other keratinous substrates of the human body from the harmful effects of both, UV-A and UV-B radiation.
  • UV-A protection factor UV-A protection factor
  • Cosmetic manufacturers try to provide consumers with products having higher and higher SPF/ UVAPF.
  • One of the ways of achieving this is to incorporate high levels of UV-A and UV-B sunscreens.
  • EP 0 995 429 (Beiersdorf AG, 2000) discloses a light protection cosmetic composition in water-in-oil emulsion containing (a) one or more compatible inorganic pigments and optionally (b) up to 0.1 weight percent of certain light filters is increased by incorporation of a composition comprising (c) a specified surface active compound, (d) a silicone emulsifier and optionally (e) tocopherol derivative(s).
  • US 7 790 146 discloses a stable water-in-oil sunscreen emulsion that provides high sunscreen efficiency comprising a sunscreen active, an alkyl dimethicone copolyol emulsifier in which the water-soluble, alkyl-soluble and silicone soluble groups of the dimethicone copolyol are in specific ratios to each other.
  • US2009232751 (Tanning Research Laboratories) relates to a stable water-in-oil sunscreen emulsion that provides a high sunscreen efficiency ("SE”) having a sun protection factor (“SPF”) of X, where X is at least about 15, and having a sunscreen efficiency (“SE”) of at least 2, preferably at least 3, where SE is the ratio of SPF over the total weight percentage of sunscreen actives based on the total weight of the
  • the emulsion comprises (i) at least one sunscreen active and (ii) an alkyl dimethicone copolyol emulsifier in which the water-soluble, alkyl-soluble and silicone- soluble groups of the dimethicone copolyol are in specific ratios to each other.
  • W01 1 147738 (Unilever) relates to a sunscreen composition which provides a high SPF (equal to or greater than 15) or high UVAPF (equal to or higher than 4) without compromising on the desired skin sensorial properties while using relatively low amounts of sunscreen agents.
  • the composition comprises a UVA sunscreen of the
  • dibenzoylmethane group a non-ionic surfactant selected from the class of ethoxylates of fatty alcohol/ fatty acid with saturated carbon chain and having HLB greater than 15.5 or from the class of ethoxylates of fatty alcohol / fatty acid with unsaturated carbon chain with HLB greater than 12; and a specific polymer of the class of acrylate / R- methacrylate copolymer or crosspolymer, or an acrylate / R-alkyl acrylate crosspolymer; or from the class of copolymers of acryloyldimethyltaurate with vinyl pyrrolidone, methacrylate or R- alkyl acrylate, and and a cosmetically acceptable base.
  • a non-ionic surfactant selected from the class of ethoxylates of fatty alcohol/ fatty acid with saturated carbon chain and having HLB greater than 15.5 or from the class of ethoxylates of fatty alcohol / fatty acid with unsaturated carbon chain
  • the high SPF is achieved via the interaction of a high HLB (higher than 12 or 15.5) non-ionic surfactant and the sunscreen used.
  • the present invention involves the achievement of high SPF through use of specific silicone polymers (having low HLB from 3.2 to 9.6) which interacts with the sunscreens in the presence of a fatty acid containing cosmetic base to provide the enhanced sun- protection.
  • sunscreen composition comprising sunscreen agents (also known as UV or visible light filters) preferably in low concentrations that are able to provide much higher sun protection (SPF / UVAPF values) as compared to known sunscreen compositions comprising such low levels of sunscreen agents in oil-in-water emulsions.
  • sunscreen agents also known as UV or visible light filters
  • SPDF / UVAPF values much higher sun protection
  • a sunscreen composition comprising:
  • R1 is a group selected from alkyl, branched alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, alkaryl, alkoxy, aryl, aralkyl, alkenyl, alkynyl or fluorocarbon groups containing 1 to 50 carbon atom(s),
  • R2 is R1 or an organofunctional segment comprising a Nitrogen, Oxygen, Phosphorus or Sulphur atom or an organic moiety (or spacer) comprising a carbon, nitrogen, phosphorous, sulphur, oxygen or silicon atom capable of crosslinking to another or same polymer via spacer elements;
  • X is a hydrophilic polymer or segment thereof having a surface energy at least 40 mJ/m 2 ,
  • Y is a hydrophobic polymer or segment thereof having a surface energy less than 40 mJ/m 2 ;
  • Units A and F are the terminal moieties;
  • Blocks B, C, D and E are non terminal moieties independently positioned between A and F in any order;
  • a, b & c are integers ranging from about 1 -10,000;
  • d is an integer ranging from about 0-10,000;
  • a method of providing protection from UV-vis radiation comprising applying a composition of the invention to a desired external surface of the body.
  • composition of the invention for providing an SPF higher than 12.
  • “Sunscreen composition” as used herein, is meant to include a composition for topical application to skin and/or hair of mammals, especially humans particularly for sunscreen benefits. Such a composition may be generally classified as leave-on or rinse off, and includes any product applied to a human body primarily for sun protection but may be used also for improving appearance, cleansing, odor control or general aesthetics.
  • the composition of the present invention can be in the form of a liquid, lotion, cream, foam, scrub, gel, soap bar or toner, or applied with an implement or via a face mask, pad or patch.
  • Non-limiting examples of personal care compositions include leave-on skin lotions and creams, shampoos, conditioners, shower gels, toilet bars, antiperspirants, deodorants, dental products, shave creams, depilatories, lipsticks, foundations, mascara, sunless tanners and sunscreen lotions.
  • Skin as used herein is meant to include skin on the face and body (e.g., neck, chest, back, arms, underarms, hands, legs, buttocks and scalp) and especially to the sun exposed parts thereof.
  • the composition of the invention is also of relevance to applications on any other keratinous substrates of the human body other than skin e.g. hair where products may be formulated with specific aim of providing photoprotection.
  • the composition of the invention comprises a UV or visible light filter, the specific silicone compound of the invention in an oil-in-water base comprising fatty acid.
  • the silicone compound of the invention enhances the spreading behavior of the light filter in the fatty acid containing base thereby providing the enhanced photoprotection.
  • organic sunscreens that are more soluble in the silicone compounds are found to provide enhanced photoprotection. By being more soluble is meant that the solubility of the sunscreen active in the silicone compound is higher than 0.1 wt% at 25°C.
  • the UV or visible light filter may be an organic UV or visible light sunscreen or an inorganic sunblock. It is preferably a UV organic sunscreen.
  • the organic sunscreen may be one which provides sunprotection in the UVA, UVB or visible light region or a combination of such sunscreen may be used. Alternately a broad spectrum sunscreen that is capable of protection over more than one such region may be used. Most preferably a UVA- organic sunscreen and a UVB organic sunscreen are included in the composition of the invention.
  • the composition of the invention preferably comprises a UV-A sunscreen as the UV or visible light filter required in the present invention.
  • a suitable UV-A sunscreen is a dibenzoylmethane or its derivative.
  • Preferred dibenzoylmethane derivative is selected from 4-tert-butyl-4'-methoxydibenzoylmethane, 2-methyldibenzoylmethane, 4-methyl- dibenzoyl-methane, 4-isopropyldibenzoyl-methane, 4-tert-butyldibenzoylmethane, 2,4- dimethyldibenzoylmethane, 2,5-dimethyldibenzoylmethane, 4,4'-diisopropyl- dibenzoylmethane, 2-methyl-5-isopropyl-4'-methoxydibenzoylmethane, 2-methyl-5-tert- butyl-4'-methoxy-dibenzoyl methane, 2,4
  • dibenzoylmethane derivative is 4-tert.-butyl-4'-methoxydibenzoylmethane.
  • Dibenzoylmethane or its derivative is preferably present in 0.1 to 7%, preferably 0.2 to 5%, more preferably 0.4 to 3%, by weight of the composition.
  • the composition of the invention preferably comprises 0.1 to 7%, preferably from 0.5 to 6%, more preferably 1 to 5%, a UV-B organic sunscreen by weight of the composition.
  • the UV-B organic sunscreen when present, is preferably oil-soluble.
  • UV-B sunscreen is preferably selected from the class of cinnamic acid, salicylic acid, diphenyl acrylic acid or derivatives thereof.
  • a few of the preferred oil soluble UV-B sunscreens which are commercially available and useful for inclusion in the composition of the invention are OctisalateTM (octyl salicylate), HomosalateTM (3,3,5-trimethyleyclohexyl 2- hydroxybenzoate), Neo HeliopanTM(a range of organic UV filters including ethylhexyl methoxycinnamate (Neo Heliopan AV) and ethylhexyl salicylate (Neo Heliopan OS)), OctocryleneTM (2-ethylhexyl 2-cyano-3,3-diphenyl-2-propenoate) or Parsol MCXTM (2- ethylhexyl-4-methoxycinnamate).
  • OctisalateTM octyl salicylate
  • HomosalateTM 3,3,5-trimethyleyclohexyl 2- hydroxybenzoate
  • Neo HeliopanTM a range of organic UV filters including e
  • the UVB sunscreen is 2-ethylhexyl-4-methoxycinnamate.
  • the oil soluble UVB sunscreen is 2-ethylhexyl 2-cyano-3,3-diphenyl-2-propenoate.
  • An especially preferred oil soluble UVB sunscreen is 2-ethylhexyl 2-cyano-3,3-diphenyl-2- propenoate which is commercially available as OctocryleneTM.
  • Octocrylene has the chemical formula
  • R1 is a straight or branched chain C1 -C30 alkyl group.
  • the UV or visible light filter as per the invention may preferably be an inorganic sunblock.
  • Suitable inorganic sunscreens which may be included are zinc oxide, titanium dioxide, zinc sulphide, cadmium yellow or Bismuth vanadate.
  • the preferred inorganic sunblocks are titanium dioxide or zinc oxide.
  • the amount of inorganic sunscreen that may be incorporated in the composition is preferably 0.1 to 10%, more preferably 0.5 to 5% by weight of the composition.
  • the inorganic sunblocks preferably have an average particle size in the range of 5 to 100 nm.
  • the inorganic sunscreen is preferably hydrophobically coated. Suitable hydrophobic coating materials are aluminium stearate, silicones or ferric stearate.
  • composition of the invention comprises 0.1 to 5% by weight a silicone polymer having following structure
  • R1 is a group selected from alkyl, branched alkyl, cycloalkyl, polycycloalkyl, heterocycloalkyl, alkaryl, alkoxy, aryl, aralkyl, alkenyl, alkynyl or fluorocarbon groups containing 1 to 50 carbon atom(s),
  • R2 is R1 or an organofunctional segment comprising a Nitrogen, Oxygen, Phosphorus or Sulphur atom or an organic moiety (or spacer) comprising a carbon, nitrogen, phosphorous, sulphur, oxygen or silicon atom capable of crosslinking to another or same polymer via spacer segments;
  • X is a hydrophilic polymer or segment thereof having a surface energy at least 40 mJ/m 2 ,
  • Y is a hydrophobic polymer or segment thereof having a surface energy less than 40 mJ/m 2 ;
  • Units A and F are the terminal moieties
  • Blocks B, C, D and E are non terminal moieties independently positioned between A and F in any order;
  • a, b & c are integers ranging from about 1 -10,000;
  • R1 is preferably selected from n-alkyl, branched alkyl, cycloalkyl, containing 1 to 30 carbon atom(s).
  • the most preferred R1 group is a methyl group.
  • R2 is R1 or an organofunctional segment comprising a Nitrogen, Oxygen, Phosphorus or Sulphur atom or an organic moiety (or spacer) comprising a carbon, nitrogen,
  • R2 is preferably R1 or phosphate, or the same polymer crosslinked via suitable spacer groups.
  • An especially preferred R2 group is a phosphate group.
  • X is the functional group or segment that is the hydrophilic group having a surface energy at least 40 mJ/m 2 .
  • X is preferably selected from the following groups: polyethylene glycol, polypropylene glycol, polyvinyl pyrrolidone, or polyacrylic acid.
  • Y" is a hydrophobic polymer or segment thereof having a surface energy less than 40 mJ/m 2 .
  • Y is preferably a C6 to C30 hydrocarbon chain, more preferably a C10 to C22 hydrocarbon and most preferably a C16 to C20 hydrocarbon.
  • the hydrocarbon chain is preferably selected from a stearyl, cetyl, dodecyl or lauryl group.
  • a, b, and c are integers ranging from 1 to 10,000, more preferably 10 to 4000 and most preferably 30 to 300.
  • d is an integer ranging from 0 to 10,000 more preferably 10 to 4000 and most preferably 30 to 300.
  • Surface energy quantifies the disruption of intermolecular bonds that occur when a surface is created.
  • Surface energy is defined as the excess energy at the surface of a material compared to the bulk.
  • the surface energy across an interface or the surface tension at the interface is a measure of the energy required to form a unit area of new surface at the interface.
  • Surface energy is usually measured using a surface tensiometer.
  • the composition of the invention comprises 1 to 25%, preferably 3 to 20%, more preferably 6 to 20% fatty acid by weight of the compostion.
  • the composition may include 0.1 to 10% soap.
  • the cosmetically acceptable bases are preferably in a cream, lotion, or emulsion format.
  • a more preferred format is a cream or lotion, further more preferred format is a vanishing cream.
  • Vanishing cream base is one which may comprise 3 to 25%, more preferably 5 to 20% fatty acid.
  • the fatty acids may be saturated or unsaturated fatty acids.
  • the base preferably comprises 0.1 to 10%, more preferably 0.1 to 3% soap.
  • Ci 2 to C 20 fatty acids are especially preferred in vanishing cream bases, further more preferred being d 4 to Ci 8 fatty acids.
  • the fatty acid is preferably substantially a mixture of stearic acid and palmitic acid.
  • Soaps in the vanishing cream base include alkali metal salt of fatty acids, like sodium or potassium salts
  • the soap is preferably the potassium salt of the fatty acid mixture.
  • the fatty acid in vanishing cream base is often prepared using hystric acid which is substantially
  • the composition comprises at least 6%, preferably at least 10%, more preferably at least 12% fatty acid.
  • the cosmetically acceptable base is usually from 10 to 99.9%, preferably from 50 to 99% by weight of the composition.
  • the cosmetically acceptable base preferably includes water. Water is preferably included in 35 to 90%, more preferably 50 to 85%, further more preferably 50 to 80% by weight of the composition.
  • the sunscreen composition of the invention is for photo protecting the human epidermis or hair against the damaging effect of solar irradiation, as antisun/sunscreen composition or as makeup product.
  • Such compositions can, in particular, be provided in the form of a lotion, a thickened lotion, a gel, a cream, cleansing milk, an ointment, a powder or a solid tube stick and may optionally be packaged as an aerosol and may be provided in the form of a mousse, foam or a spray.
  • the personal care compositions of the invention can also contain usual cosmetic adjuvants and skin care additives commonly employed in skin care products such as liquid or solid emollients, silicone oils, emulsifiers, solvents, humectants, polymeric or inorganic thickeners, powders, pigments (example clay mineral, barium sulfate, or pearl pigments, for example silver or gold, or any iris foil pearl pigment, having an interference color of red, orange, green, blue, or, purple (including any iris foil pearl pigments covered with inorganic pigments, organic pigments, laked pigments, etc.), bismuth oxychloride, bismuth oxychloride coated mica,) organic or inorganic sunscreens with and without photostabiliser, skin lightening agents, skin conditioners, optical brighteners, propellants, healing agents (example allantoin), cooling agents (example urea, menthol, menthyl lactate, frescolate), antiseptic agents and other specific skin-
  • the vehicle may also further include adjuncts such as antioxidants, perfumes, opacifiers, preservatives, colorants and buffers.
  • adjuncts such as antioxidants, perfumes, opacifiers, preservatives, colorants and buffers.
  • the necessary amounts of the cosmetic and dermatological adjuvants and additives, based on the desired product, can be chosen by the skilled person.
  • Vitamins which act as skin-lightening ingredients can be advantageously included in the composition to provide for additional skin lightening effects. These include vitamin B3, vitamin B6, vitamin C, vitamin A or their precursors and cosmetically acceptable derivatives. Mixtures of the vitamins can also be employed in the composition of the invention. When present, these vitamins are used in the range of 0.01 to 10.0% by weight of said composition.
  • Emollients such as stearyl alcohol, glyceryl monoricinoleate, mink oil, cetyl alcohol, isopropyl isostearate, stearic acid, isobutyl palmitate, isocetyl stearate, oleyl alcohol, isopropyl laurate, hexyl laurate, decyl oleate, octadecan-2-ol, isocetyl alcohol, eicosanyl alcohol, behenyl alcohol, cetyl palpitate, silicone oils such as dimethylpolysiloxane, organomodified silicones such as cetyl dimethicone, steryl dimethicones; cross-linked silicone elastomers/resins; organo-modified cross-linked silicone elastomers/resins di-n- butyl sebacate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, buty
  • the emollient is preferably present in an amount from about 1 to about 20 wt.%, preferably from about 2 to about 15 wt.%, and most preferably from about 4 to about 10 wt.% of the total weight of the composition.
  • the preservatives and antioxidants are preferably present in an amount ranging from about 0.01 to about 10 % of the total weight of the composition.
  • the preservatives and/or antioxidants are present in an amount varying from about 0.1 to about 1 wt. %.
  • Additional emulsifiers may be used to enhance the stability of the oil in water emulsion composition of the invention but these are not required as the silicone polymer has both the hydrophilic group and the hydrophobic group to not only provide the spreading desired but also the emulsifying property to enable forming stable oil in water emulsion.
  • additional emulsifiers may be present. When present, these are selected from the group of non-ionic surfactants e.g. fatty alcohol ethoxylates (e.g.
  • Brij 35 alkyl phenol ethoxylates (Triton group) and polyoxyethylene sorbitan alkyl esters (e.g. Tween 20). They are preferably present in less than 5%, more preferably less than 3%, and most preferably less than 2% by weight of the composition. Optimally they are absent from the composition.
  • the oily phase of the compositions according to the present invention may also contain natural vegetable or animal waxes such as bee wax, china wax, bumblebee wax and other waxes of insects as well as shea butter.
  • the aqueous phase of the formulations of the present invention may contain the usual cosmetic additives such as alcohols, especially lower alcohols, preferably ethanol and so or isopropanol, low alkyl diols or polyols and their ethers, preferably propyleneglycol, glycerine, ethyleneglycol, ethylene glycol monoethyl or monobutyl ether, electrolytes and especially, one or more thickeners.
  • Thickeners that may be used in formulations of the present invention include the family of silicon dioxide, magnesium and/or aluminum silicates, polysaccharides and their derivatives such as hyaluronic acid, xanthan gum, hydroxypropyl cellulose, acrylate copolymers, preferably a polyacrylate of the family of carbopols, such as carbopols of type 980, 981 , 1382, 2984, 59S4.
  • Moisturizing agents such as humectants, may be incorporated into the compositions according to the present invention to reduce the trans- epidermal water loss (TEWL) of the horny layer of the skin.
  • TEWL trans- epidermal water loss
  • Suitable humectants include glycerin, lactic acid, pyrrolidone carbonic acid, urea, polyethylene glycol, polypropylene glycol, sorbitol, PEG- 400, and mixtures thereof.
  • Additional suitable moisturizers are polymeric moisturizers of the familiy of water soluble and/or with water gelating polysaccarides such as hyaluronic acid, chitosan and/or fucose rich polysaccharides available, e.g., as FucogeH OOO (CAS-Nr. is 178463-23-5) from SOLABIA S.
  • the moisturizing agent is optionally present in an amount varying from about 0.5 to about 8 wt.
  • Suitable neutralizing agents which may be included in the composition of the present invention to neutralize components such as e.g. an emulsifier or a foam builder/stabilizer include but are not limited to alkali hydroxides such as a sodium and potassium hydroxide) organic bases such as diethanolamine (DEA), triethanolamine (TEA), aminomethyl propanol, trisodium ethylenediaminetetraacetic acid and mixtures thereof; basic amino acids such as arginine and lysine and any combination of any of the foregoing.
  • alkali hydroxides such as a sodium and potassium hydroxide
  • organic bases such as diethanolamine (DEA), triethanolamine (TEA), aminomethyl propanol, trisodium ethylenediaminetetraacetic acid and mixtures thereof
  • basic amino acids such as arginine and lysine and any combination of any of the foregoing.
  • the neutralizing agent may be present in an amount of about 0.01 to about 8 wt.% in the compositions of the present invention, preferably 1 to about 5 wt.%.
  • the addition of electrolytes into the composition of the present invention may be necessary to change the behavior of a hydrophobic emulsifier.
  • the emulsions may preferably contain electrolytes of one or several salts including anions such as a chloride, a sulfate, a carbonate, a borate or an aluminate, without being limited thereto.
  • Other suitable electrolytes may be on the bases of organic anions such as, but not limited to, lactate, acetate, benzoate, propionate, tartrate and citrate.
  • As cations preferred are ammonium, alkyl ammonium, alkaline or alkaline earth metals such as Sodium or Magnesium.
  • Electrolytes are preferably present in an amount of about 0.01 to about 0.5 wt.% in the compositions of the present inventions.
  • a method of providing protection from UV-vis radiation comprising applying a composition of the invention to a desired external surface of the body.
  • composition of the invention for providing an SPF higher than 12.
  • compositions having a general formulation as shown in Table 1 below were prepared.
  • Table 2 Various compositions containing different types and amounts of the ingredients in Table 1 were prepared as shown in Table 2.
  • the invitro SPF of the various compositions of Table 2 were measured using an Optometries 290S instrument model.
  • the substrate used was a 8 cm Transport tape procured from 3M company.
  • the samples were applied at about 2 mg/cm 2 .
  • the measured SPF values for the various compositions are summarised in Table 2.
  • Silsurf 212, 412, 612 and 812 (all sourced from Siltech) have the same chemical structure but differ in the percentage of EO groups and with alkyl groups; the percentages of these are given in the table below: %
  • compositions as per the invention which comprise a silicone polymer as per the invention (comprising both a hydrophobic as well as hydrophilic group) along with a base comprising fatty acid are able to provide the desired high SPF.
  • compositions outside the invention viz. Examples A having no silicone polymer;
  • Example B having a silicone polymer having only a hydrophobic group and no hydrophilic group
  • Example C having no silicone polymer and no fatty acid
  • Example D having a silicon polymer as per the invention but no fatty acid

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Abstract

La présente invention concerne une crème solaire protégeant très efficacement contre les effets du soleil. La composition selon l'invention comprend des principes actifs protégeant contre les UV et un composé à base de silicone comportant des groupes fonctionnels hydrophiles et hydrophobes dans une émulsion huile dans eau contenant des acides gras.
PCT/EP2013/063348 2012-07-12 2013-06-26 Crème solaire WO2014009153A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12176078.9 2012-07-12
EP12176078 2012-07-12

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WO2014009153A2 true WO2014009153A2 (fr) 2014-01-16
WO2014009153A3 WO2014009153A3 (fr) 2014-06-26

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995429A1 (fr) 1998-09-25 2000-04-26 Beiersdorf Aktiengesellschaft Utilisation de silicones comme tensioactifs ainsi que d'autres agents tensioactifs pour augmenter le facteur photoprotectif et/ou la protection contre les UV-A des compositions cosmétiques ou dermatologiques photoprotectrices
US20090232751A1 (en) 2005-11-14 2009-09-17 Dennis Lott High Sunscreen Efficiency Water-in-Oil Emulsion
WO2011147738A2 (fr) 2010-05-25 2011-12-01 Unilever Nv Composition d'écran solaire

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200803911A (en) * 2005-12-30 2008-01-16 Shiseido Co Ltd Sunscreen cosmetics
EP2054017B1 (fr) * 2006-08-24 2011-10-12 Unilever PLC Compositions cosmétiques photostables
WO2010129316A2 (fr) * 2009-05-04 2010-11-11 Elc Management Llc Compositions cosmetiques comprenant des cyanodiphenylacrylates et des polymeres filmogenes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995429A1 (fr) 1998-09-25 2000-04-26 Beiersdorf Aktiengesellschaft Utilisation de silicones comme tensioactifs ainsi que d'autres agents tensioactifs pour augmenter le facteur photoprotectif et/ou la protection contre les UV-A des compositions cosmétiques ou dermatologiques photoprotectrices
US20090232751A1 (en) 2005-11-14 2009-09-17 Dennis Lott High Sunscreen Efficiency Water-in-Oil Emulsion
US7790146B2 (en) 2005-11-14 2010-09-07 Dennis Lott High sunscreen efficiency water-in-oil emulsion
WO2011147738A2 (fr) 2010-05-25 2011-12-01 Unilever Nv Composition d'écran solaire

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