EP3024433A1 - Transparent sunscreen compositions and use thereof - Google Patents

Transparent sunscreen compositions and use thereof

Info

Publication number
EP3024433A1
EP3024433A1 EP14750428.6A EP14750428A EP3024433A1 EP 3024433 A1 EP3024433 A1 EP 3024433A1 EP 14750428 A EP14750428 A EP 14750428A EP 3024433 A1 EP3024433 A1 EP 3024433A1
Authority
EP
European Patent Office
Prior art keywords
sunscreen
sunscreen composition
mixtures
weight
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14750428.6A
Other languages
German (de)
French (fr)
Inventor
Michael Brock
Petra Lewing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sasol Germany GmbH
Original Assignee
Sasol Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sasol Germany GmbH filed Critical Sasol Germany GmbH
Publication of EP3024433A1 publication Critical patent/EP3024433A1/en
Withdrawn legal-status Critical Current

Links

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
    • A61K8/37—Esters of carboxylic acids
    • 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
    • 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
    • A61K8/046—Aerosols; Foams
    • 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
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/30—Characterized by the absence of a particular group of ingredients
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/30—Characterized by the absence of a particular group of ingredients
    • A61K2800/31—Anhydrous
    • 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
    • A61K2800/48—Thickener, Thickening system
    • 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
    • A61K2800/49—Solubiliser, Solubilising system

Definitions

  • the invention relates to transparent sunscreen compositions which contain at least one ester of an ⁇ -hydroxycarboxylic acid and a solid organic UV filter in the dissolved state, and are substantially free of water and ethanol, and their use as sunscreen, in particular sunscreen or sunscreen spray.
  • transparent sunscreen compositions which contain at least one ester of an ⁇ -hydroxycarboxylic acid and a solid organic UV filter in the dissolved state, and are substantially free of water and ethanol, and their use as sunscreen, in particular sunscreen or sunscreen spray.
  • UVA and UVB radiation of the sun also has a damaging effect on the skin. If the human skin is exposed to the sun for an extended period of time, this can lead to various disorders. Examples include erythema, dermatoses, dermatitis, accelerated aging of the skin and skin cancer. For the protection of the skin, therefore, a large number of sunscreens are offered. These contain, inter alia, sunscreen filters which can be used in cosmetic preparations. These UVA and UVB filters are summarized in most states in the form of positive lists such as Annex VI of the European Regulation on Cosmetic Products No. 1223/2009.
  • the said sunscreen in contrast to the present invention are emulsions and dispersions, they contain emulsifiers and
  • Dispersants may be applied after application of the sunscreen to the skin at high humidity, e.g. By sweating or bathing, emulsify significant amounts of the UVA and UVB filters and remove them from the skin so that they are no longer available for sun protection.
  • DE 20200006005 U1 and DE 102005059742 A1 propose transparent alcoholic sunscreen gels or sprays, which are increasingly used by many consumers because of their appearance, which is associated with freshness, clarity and naturalness.
  • These transparent sunscreen gels or sprays contain at least 20% by weight of ethanol.
  • the presence of ethanol is claimed because of the refreshing cooling sensory effect.
  • ethanol can dry out and irritate the skin.
  • the carriers provide oils, e.g. Isopropyl myristate, isopropyl palmitate, alkyl benzoate, preferably mineral oil. These oils have the sole task of dissolving the organic UV filters. They have no moisturizing and soothing effect, which would be of great benefit to the sun-exposed skin.
  • the mineral oil is attributed the additional function of a plasticizer. However, it is known that mineral oils seal the skin pores and thereby minimize skin respiration.
  • EP 0685226 B1 claims cosmetic compositions which contain inter alia the solid organic UV filter ethylhexyl triazone in combination with esters of ⁇ -hydroxycarboxylic acids. Indications that the claimed cosmetic compositions are transparent are lacking; on the contrary, they are aqueous emulsions, as far as sunscreen formulations are concerned.
  • EP 0904776 B1 claims a composition of at least one filter-type UV filter derived from benzylidene camphor, dibenzoylmethane and / or triazine in admixture with a dialkyl tartrate. Again, there is no indication that the claimed composition is suitable for the preparation of transparent sunscreens.
  • EP 0800816 B1 claims photoprotective drug combinations of a triazine derivative as a UV filter and one or more dialkyl esters of ⁇ , ⁇ -dihydroxycarboxylic acids. There is no indication whatsoever that the claimed compositions are suitable for the preparation of transparent sunscreens; on the contrary, they are aqueous emulsions.
  • the object of the present invention was to remedy the disadvantages mentioned. Surprisingly, it has been found that the sunscreen compositions or their use in accordance with claims provide the abovementioned disadvantages.
  • the present invention relates to transparent sunscreen compositions containing esters of ⁇ -hydroxycarboxylic acids.
  • the present invention relates to the use of sunscreen compositions as skin sprayable sunscreen sprays and as hand-applied gels to the skin. Due to the fact that the sunscreen compositions are transparent liquids, they are not present as emulsions and / or dispersions. The use of surfactants is not necessary and the transparent sunscreen compositions are therefore preferably surfactant-free.
  • the present invention more particularly relates to transparent sunscreen compositions
  • the sunscreen compositions according to the invention are considered to be transparent, if possible, in daylight by a disposable cuvette filled with the sunscreen composition according to the invention (Brand GmbH, Wertheim / Germany, dimensions: 12.5 ⁇ 12.5 ⁇ 45 mm, wavelength range: 300 nm - 900 nm) with the naked eye to look. Characters (font: Arial, font size: 8) located immediately after the disposable cuvette must be clearly recognizable and readable. "Insoluble in water” or “water-insoluble” means that the organic UV filter is at 25 ° C in water to less than 0.5% by weight. "Solid” means that the organic UV filter is a solid at 25 ° C, especially in crystalline form.
  • ⁇ -Hydroxycarboxylic acids such as, for example, lactic acid, citric acid, malic acid or tartaric acid are widely used in cosmetic preparations. They are used, inter alia, as humectants and to stimulate the cell metabolism in the skin for stressed and aging skin. Since ⁇ -hydroxycarboxylic acids can lead to skin irritation even at low concentrations, their use in cosmetic preparations is severely limited. This is remedied by esters of ⁇ -hydroxycarboxylic acids, which can be regarded as carriers of the ⁇ -hydroxycarboxylic acids and are slowly cleaved by the esterases present on and in the skin with the release of the ⁇ -hydroxycarboxylic acids.
  • esters of ⁇ -hydroxycarboxylic acids have a long-term care effect on the skin. Due to the slow release of the ⁇ -hydroxycarboxylic acids on the skin, it is possible, in comparison with free ⁇ -hydroxycarboxylic acids, to apply large amounts of the esters of ⁇ -hydroxycarboxylic acids to the skin by means of cosmetic preparations, where they have a moisturizing and soothing effect. All acid groups of the ⁇ -hydroxycarboxylic acid (s) used according to the invention are therefore esterified.
  • esters of ⁇ -hydroxycarboxylic acids are sold by Sasol / Italy under the name COSMACOL® ELI (INCI: C12-13 alkyl lactates), COSMACOL® ECI (INCl: tri-C12-13 alkyl citrates), COSMACOL® ECL (INCI: Tri-C14-15 alkyl citrate), COSMACOL® EMI (INCI: di-C 2-13 alkyl malate), COSMACOL® ETI (INCI: di-C12-13 alkyl tartrate) and COSMACOL® ETLP (INCI: dimyristyl tartrate) , In addition to the moisturizing and calming effect on sun-stressed skin, these esters are characterized by being good solvents for organic UV filters, especially solid organic UV filters.
  • the sunscreen compositions according to the invention contain at least one water-insoluble and solid organic UVA and / or UVB filter as mentioned in Annex VI of the European Regulation on Cosmetic Products No. 1223/2009. Particularly preferred
  • Ethylhexyl methoxycinnamates e.g., Eusolex® 2292, Merck
  • ethyl triazone Uvinul® T 150, BASF
  • the water-insoluble and solid organic UV filters are soluble in the esters of ⁇ -hydroxycarboxylic acids or mixtures thereof and the sunscreen compositions. Therefore, the sunscreen compositions are also transparent.
  • the sunscreen compositions are also transparent.
  • liquid soluble UVA or UVB filters or mixtures thereof may also be present.
  • the transparent sunscreen compositions according to the invention contain not more than 1% by weight of water and not more than 1% by weight of ethanol and are thus substantially free of water and essentially free of ethanol.
  • the transparent sunscreen compositions according to the invention preferably contain not more than 1% by weight of a C 3 -alcohol and preferably not more than 1% by weight of a C 4 -alcohol.
  • transparent and gel-like sunscreen compositions can be prepared by using one or more thickeners comprising hydrophilic amorphous silicates, hydrophobic amorphous silicates, silicate salts or mixtures thereof. Examples include the Aerosil® and Sipernat® grades from Evonik Industries and the Wacker® HDK grades from Wacker Chemie.
  • the transparent sunscreen compositions according to the invention When used as sprays, the transparent sunscreen compositions according to the invention contain 0 to 2% by weight, in particular 0 to 1% by weight, such as 0.01 to 0.1% by weight, of the above thickener. When used as gels, the transparent sunscreen compositions according to the invention contain 0-10% by weight, in particular 1 to 8% by weight and more preferably 1% to 5% by weight of the above thickener.
  • the transparent sunscreen compositions according to the invention may further comprise, in addition to the esters of ⁇ -hydroxycarboxylic acids, further oils or waxes or mixtures thereof.
  • the oils and / or waxes from the group of lecithins, triglycerides of saturated or unsaturated, branched and / or linear alkylcarboxylic acids having a chain length of 6 to 24, in particular 12 to 18 carbon atoms, are selected, including mixtures thereof.
  • the triglycerides may advantageously be synthetic, semi-synthetic or natural oils and / or waxes, such as tristostearin, soybean oil, castor oil, olive oil, safflower oil, wheat germ oil, grapeseed oil, peanut oil, sunflower oil, almond oil, palm oil, palm kernel oil, coconut oil, thistle oil, evening primrose oil, rapeseed oil and like.
  • synthetic oils and / or waxes such as tristostearin, soybean oil, castor oil, olive oil, safflower oil, wheat germ oil, grapeseed oil, peanut oil, sunflower oil, almond oil, palm oil, palm kernel oil, coconut oil, thistle oil, evening primrose oil, rapeseed oil and like.
  • oils and / or waxes may be selected from the group of branched and / or linear hydrocarbons, such as e.g. Paraffin waxes, Vaseline
  • oils and / or waxes can furthermore advantageously be selected from the group of esters of saturated and / or unsaturated, branched and / or linear alkylcarboxylic acids having a chain length of 3 to 30 carbon atoms and saturated or unsaturated, branched or linear alcohols having a chain length of 3 to 30 carbon atoms, including mixtures thereof.
  • esters of aromatic carboxylic acids with saturated or unsaturated, branched or linear alcohols having a chain length of 3 to 30 carbon atoms, including mixtures thereof, such as C 12-15 -alkyl benzoate can be used in the transparent sunscreens according to the invention. Any mixtures of such oil and wax components are advantageous to use in the context of the present invention.
  • the transparent sunscreen compositions according to the invention preferably contain saturated or unsaturated, branched or linear alcohols of a chain length of 10 to 30 carbon atoms, including mixtures thereof.
  • Guerbet alcohols such as ISOFOL® 12 (INCI: butyloctanol, Sasol Germany), ISOFOL® 16 (INCI: hexyldecanol), ISOFOL® 18 T (INCI:
  • the transparent sunscreen compositions according to the invention may contain further cosmetic and / or pharmaceutical auxiliaries, additives and / or active ingredients. These are, for example, cooling substances such as menthol, dyes, perfumes, antioxidants, plant extracts, antiperspirants, browning agents, film formers, protein hydrolysates, vitamins, antimicrobial substances and the like.
  • Phase A was heated to about 60 ° C and stirred until the sample became clear.
  • the sample was allowed to cool to about 30 ° C and phase B was added and homogenized.
  • phase C was added and homogenized by means of Ultra-Turrax. Subsequently, the gel was defoamed under vacuum. Determination of the clear melting point:
  • a test tube or Shukoff flask is filled with 5-10 ml_ of the clear product to be tested and fitted with a cold thermometer. The sample is cooled in the cryostat bath to at least -20 ° C until the sample is completely frozen. Subsequently, the sample is slowly thawed at room temperature.
  • the clear melting point is the temperature at which the sample no longer shows any noticeable turbidity. As a result, the arithmetic mean was given from two determinations, unless the difference thereof exceeds 1 ° C.
  • Tables 1a, 1b, 2a and 2b The respective formulations and results of the investigations are shown in Tables 1a, 1b, 2a and 2b.
  • Table 1a Transparent sunscreen sprays - formulations:

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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  • Epidemiology (AREA)
  • Emergency Medicine (AREA)
  • Dermatology (AREA)
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  • Dispersion Chemistry (AREA)
  • Cosmetics (AREA)

Abstract

The invention relates to transparent sunscreen compositions containing an ester of a α-hydroxy carboxylic acid and a solid organic UV-Filter, which is present in the dissolved state, and which are essentially free of water and ethanol, and to the use thereof as a sunscreen, in particular sun protection gel or sun protection spray.

Description

Transparente Sonnenschutzmittelzusammensetzungen und deren Verwendung  Transparent sunscreen compositions and their use
Die Erfindung betrifft transparente Sonnenschutzmittelzusammensetzungen, die mindestens einen Ester einer α-Hydroxycarbonsäure und einen festen organischen UV-Filter, der im gelösten Zustand vorliegt, enthalten und sind im Wesentlichen frei von Wasser und Ethanol, und deren Verwendung als Sonnenschutzmittel, insbesondere Sonnenschutzgel oder Sonnenschutzspray. Stand der Technik: The invention relates to transparent sunscreen compositions which contain at least one ester of an α-hydroxycarboxylic acid and a solid organic UV filter in the dissolved state, and are substantially free of water and ethanol, and their use as sunscreen, in particular sunscreen or sunscreen spray. State of the art:
Der Trend zur sonnengebräunten Haut ist seit Jahren ungebrochen. Um dies zu erreichen, setzen die Menschen ihre Haut der Sonnenstrahlung aus. Alternativ werden Sonnenstudios aufgesucht. Die UVA- und UVB-Strahlung des Sonnenlich- tes hat jedoch auch eine schädigende Wirkung auf die Haut. Wenn die menschliche Haut über einen längeren Zeitraum der Sonne ausgesetzt ist, kann dies zu verschiedenen Störungen führen. Beispielhaft seien Erytheme, Dermatosen, Hautentzündungen, beschleunigte Alterung der Haut sowie Hautkrebs genannt. Zum Schutz der Haut wird daher eine Vielzahl von Sonnenschutzmitteln angebo- ten. Diese enthalten u.a. Lichtschutzfilter, die in kosmetischen Zubereitungen eingesetzt werden können. Diese UVA- und UVB-Filter sind in den meisten Staaten in Form von Positivlisten wie dem Anhang VI der Europäischen Verordnung über kosmetische Mittel Nr. 1223/2009 zusammengefasst. Die Vielzahl der kommerziell erhältlichen Sonnenschutzmittel darf nicht darüber hinweg täuschen, dass diese Zubereitungen des Standes der Technik eine Reihe von Nachteilen aufweisen. So gibt es eine große Anzahl von Sonnenschutzmitteln in Form von Cremes und Lotionen, bei denen es sich im Unterschied zur vorliegenden Erfindung um O W- oder W/O-Emulsionen handelt. Erfahrungsgemäß trägt der Verbraucher von dieser Art von Sonnenschutzmitteln oftmals zu wenig auf die Haut auf, so dass der auf der Verpackung angegebene Sonnenschutzfaktor nicht erreicht wird. Wetterhin enthalten viele nach dem Stand der Technik bekannte Sonnenschutzmittel neben organischen UV-Filtern anorganische UV-Filter wie TiO2 oder ZnO, die in Form kleiner fester Partikel vorliegen, demnach als Dis- persionen vorliegen und daher nicht zu transparenten Sonnenschutzmittelzusammensetzungen führen und bei der Anwendung auf der Haut oftmals einen weißen Niederschlag bilden, der vom Verbraucher als störend empfunden wird. The trend towards suntanned skin has been unbroken for years. To achieve this, people expose their skin to solar radiation. Alternatively, tanning salons are visited. However, the UVA and UVB radiation of the sun also has a damaging effect on the skin. If the human skin is exposed to the sun for an extended period of time, this can lead to various disorders. Examples include erythema, dermatoses, dermatitis, accelerated aging of the skin and skin cancer. For the protection of the skin, therefore, a large number of sunscreens are offered. These contain, inter alia, sunscreen filters which can be used in cosmetic preparations. These UVA and UVB filters are summarized in most states in the form of positive lists such as Annex VI of the European Regulation on Cosmetic Products No. 1223/2009. The multitude of commercially available sunscreens must not disguise the fact that these prior art preparations have a number of disadvantages. Thus, there are a large number of sunscreens in the form of creams and lotions, which, unlike the present invention, are O W or W / O emulsions. Experience has shown that the consumer often does not apply enough of this type of sunscreen to the skin so that the sun protection factor indicated on the packaging is not achieved. Wetterhin contain many known in the prior art sunscreen in addition to organic UV filters inorganic UV filters such as TiO 2 or ZnO, which are in the form of small solid particles, therefore persires as dispersions and therefore do not lead to transparent sunscreen compositions and in the application often form a white precipitate on the skin, which is perceived by the consumer as disturbing.
Ersatzblatt Da die genannten Sonnenschutzmittel im Unterschied zur vorliegenden Erfindung Emulsionen sowie Dispersionen darstellen, enthalten sie Emulgatoren und replacement blade Since the said sunscreen in contrast to the present invention are emulsions and dispersions, they contain emulsifiers and
Dispergatoren. Diese können nach dem Auftragen des Sonnenschutzmittels auf die Haut bei hoher Feuchtigkeit, z.B. durch Schwitzen oder Baden, erhebliche An- teile der UVA- und UVB-Filter wieder emulgieren und von der Haut entfernen, so dass sie nicht mehr dem Sonnenschutz zur Verfügung stehen. Dispersants. These may be applied after application of the sunscreen to the skin at high humidity, e.g. By sweating or bathing, emulsify significant amounts of the UVA and UVB filters and remove them from the skin so that they are no longer available for sun protection.
Alternativ schlagen DE 20200006005 U1 sowie DE 102005059742 A1 transparente alkoholische Sonnenschutzgele bzw. -sprays vor, die von vielen Verbrauchern wegen ihrer Erscheinungsform, die mit Frische, Klarheit und Natürlichkeit in Verbindung gebracht werden, zunehmend verwendet werden. Diese transparenten Sonnenschutzgele bzw. -sprays enthalten mindestens 20 Gew.-% Ethanol. Die Anwesenheit von Ethanol wird wegen des erfrischend-kühlenden sensorischen Effektes ausgelobt. Es ist aber bekannt, dass Ethanol die Haut austrocknen und reizen kann. Weiterhin ist die Verwendung von Ethanol enthaltenden Sonnenschutzmitteln für bestimmte Verbrauchergruppen wie z.B. Babies und Kleinkinder prohibitiv. Alternatively, DE 20200006005 U1 and DE 102005059742 A1 propose transparent alcoholic sunscreen gels or sprays, which are increasingly used by many consumers because of their appearance, which is associated with freshness, clarity and naturalness. These transparent sunscreen gels or sprays contain at least 20% by weight of ethanol. The presence of ethanol is claimed because of the refreshing cooling sensory effect. However, it is known that ethanol can dry out and irritate the skin. Furthermore, the use of ethanol-containing sunscreens for certain consumer groups, e.g. Babies and toddlers prohibitive.
Alternativ werden von DE 602004009901 T2 insbesondere transparente und gel- artige Sonnenschutzmittel, enthaltende Träger, beansprucht. Die Träger stellen Öle wie z.B. Isopropylmyristat, Isopropylpalmitat, Alkylbenzoat, vorzugsweise Mineralöl dar. Diese Öle haben die alleinige Aufgabe, die organischen UV-Filter zu lösen. Sie haben keine feuchtigkeitsspendende und hautberuhigende Wirkung, die für die der Sonne ausgesetzte Haut von großem Vorteil wäre. Dem Mineralöl wird die zusätzliche Funktion eines Weichmachers zugeschrieben. Es ist aber bekannt, dass Mineralöle die Hautporen verschließen und dadurch die Hautatmung minimieren. Alternatively, DE 602004009901 T2 claims, in particular, transparent and gel-like sunscreens containing carriers. The carriers provide oils, e.g. Isopropyl myristate, isopropyl palmitate, alkyl benzoate, preferably mineral oil. These oils have the sole task of dissolving the organic UV filters. They have no moisturizing and soothing effect, which would be of great benefit to the sun-exposed skin. The mineral oil is attributed the additional function of a plasticizer. However, it is known that mineral oils seal the skin pores and thereby minimize skin respiration.
Die EP 0685226 B1 beansprucht kosmetische Zusammensetzungen, die u.a. den festen organischen UV-Filter Ethylhexyl Triazon in Kombination mit Estern von a- Hydroxycarbonsäuren enthalten. Hinweise, dass die beanspruchten kosmetischen Zusammensetzungen transparent sind, fehlen, im Gegenteil handelt es sich um wasserhaltige Emulsionen, soweit es sich um Sonnenschutzformulierungen handelt. EP 0904776 B1 beansprucht eine Zusammensetzung aus mindestens einem UV- Filter vom Typ der Filter, die von Benzylidencampher, Dibenzoylmethan und / oder Triazin abgeleitet ist, in Mischung mit einem Dialkyltartrat. Auch hier fehlt jeglicher Hinweis, dass die beanspruchte Zusammensetzung zur Herstellung transparenter Sonnenschutzmittel geeignet ist. EP 0685226 B1 claims cosmetic compositions which contain inter alia the solid organic UV filter ethylhexyl triazone in combination with esters of α-hydroxycarboxylic acids. Indications that the claimed cosmetic compositions are transparent are lacking; on the contrary, they are aqueous emulsions, as far as sunscreen formulations are concerned. EP 0904776 B1 claims a composition of at least one filter-type UV filter derived from benzylidene camphor, dibenzoylmethane and / or triazine in admixture with a dialkyl tartrate. Again, there is no indication that the claimed composition is suitable for the preparation of transparent sunscreens.
EP 0800816 B1 beansprucht lichtschutzwirksame Wirkstoffkombinationen aus einem Triazinderivat als UV-Filter und einem oder mehreren Dialkylestern von α,β- Dihydroxycarbonsäuren. Es fehlt jeglicher Hinweis, dass die beanspruchten Zusammensetzungen zur Herstellung transparenter Sonnenschutzmittel geeignet sind, im Gegenteil handelt es sich um wasserhaltige Emulsionen. EP 0800816 B1 claims photoprotective drug combinations of a triazine derivative as a UV filter and one or more dialkyl esters of α, β-dihydroxycarboxylic acids. There is no indication whatsoever that the claimed compositions are suitable for the preparation of transparent sunscreens; on the contrary, they are aqueous emulsions.
Aufgabe der Erfindung Object of the invention
Die Aufgabe der vorliegenden Erfindung bestand darin, den genannten Nachteilen Abhilfe zu verschaffen. Überraschenderweise wurde gefunden, dass die Sonnenschutzmittelzusammensetzungen bzw. deren Verwendung gemäß Ansprüchen den genannten Nachteilen Abhilfe verschaffen. The object of the present invention was to remedy the disadvantages mentioned. Surprisingly, it has been found that the sunscreen compositions or their use in accordance with claims provide the abovementioned disadvantages.
Zusammenfassung der Erfindung Summary of the invention
Die vorliegende Erfindung betrifft transparente Sonnenschutzmittelzusammensetzungen, die Ester von α-Hydroxycarbonsäuren enthalten. In einer weiteren Ausführungsform betrifft die vorliegende Erfindung die Verwendung von Sonnenschutzmittelzusammensetzungen als auf der Haut sprühbare Sonnenschutzsprays und als mit der Hand auf die Haut auftragbare Gele. Aufgrund der Tatsache, dass die Sonnenschutzmittelzusammensetzungen transparente Flüssigkeiten sind, liegen diese nicht als Emulsionen und/oder Dispersionen vor. Der Einsatz von Ten- siden ist nicht notwendig und die transparenten Sonnenschutzmittelzusammensetzungen sind daher vorzugsweise tensidfrei. The present invention relates to transparent sunscreen compositions containing esters of α-hydroxycarboxylic acids. In another embodiment, the present invention relates to the use of sunscreen compositions as skin sprayable sunscreen sprays and as hand-applied gels to the skin. Due to the fact that the sunscreen compositions are transparent liquids, they are not present as emulsions and / or dispersions. The use of surfactants is not necessary and the transparent sunscreen compositions are therefore preferably surfactant-free.
Die vorliegende Erfindung betrifft im einzelnen transparente Sonnenschutzmittelzusammensetzungen enthaltend The present invention more particularly relates to transparent sunscreen compositions
(a) mindestens einen Ester einer α-Hydroxycarbonsäure und hiervon vorzugsweise 5 bis 95 Gew.-%, besonders bevorzugt 10 bis 85 Gew.-% und insbesondere bevorzugt 15 bis 80 Gew.-%; (b) mindestens einen in Wasser unlöslichen und festen organischen UV- Filter, insbesondere einen UVA- und einen UVB-Filter; (A) at least one ester of an α-hydroxycarboxylic acid, and preferably from 5 to 95 wt .-%, particularly preferably 10 to 85 wt .-% and particularly preferably 15 to 80 wt .-%; (b) at least one water-insoluble and solid organic UV filter, in particular a UVA and a UVB filter;
(c) maximal 1 Gew.-% Wasser; und  (c) at most 1% by weight of water; and
(d) maximal 1 Gew.-% Ethanol;  (d) at most 1% by weight of ethanol;
und fakultativ and optionally
(e) 0-10 Gew.-% eines oder mehrerer Verdickungsmittel, umfassend hydrophile amorphe Silikate, hydrophobe amorphe Silikate, Silikatsalze oder deren Gemische;  (e) 0-10% by weight of one or more thickening agents comprising hydrophilic amorphous silicates, hydrophobic amorphous silicates, silicate salts or mixtures thereof;
und unabhängig von (e) weiter, ggf. fakultativ insbesondere, and independently of (e) further, if appropriate, in particular,
(f) 0-60 Gew.-%, vorzugsweise 5 bis 50 Gew.-%, insbesondere bevorzugt (f) 0-60 wt.%, preferably 5 to 50 wt.%, particularly preferably
10 bis 40 Gew.-%, gesättigte oder ungesättigte, verzweigte oder lineare Alkohole einer Kettenlänge von 10 bis 30 C-Atomen, vorzugsweise C10- bis C30- Guerbetalkohole oder deren Gemische. Die erfindungsgemäßen Sonnenschutzmittelzusammensetzungen gelten als transparent, wenn es möglich ist, bei Tageslicht durch eine mit der erfindungsgemäßen Sonnenschutzmittelzusammensetzung gefüllte Einmal-Küvette (Firma Brand GmbH, Wertheim/Deutschland, Abmessungen: 12,5 x 12,5 x 45 mm, Wellenlängenbereich: 300 nm - 900 nm) mit bloßen Auge zu schauen. Schriftzeichen (Schrifttyp: Arial, Schriftgröße: 8), die sich unmittelbar hinter der Einmal-Küvette befinden, müssen klar erkennbar und lesbar sein.„In Wasser unlöslich" oder „wasserunlöslich" bedeutet, dass sich der organische UV-Filter bei 25°C in Wasser zu weniger 0,5 Gew.-% löst.„Fest" bedeutet, dass der organische UV-Filter bei 25°C ein Feststoff ist; insbesondere vorliegend in kristalliner Form. 10 to 40 wt .-%, saturated or unsaturated, branched or linear alcohols having a chain length of 10 to 30 carbon atoms, preferably C10 to C30 Guerbet alcohols or mixtures thereof. The sunscreen compositions according to the invention are considered to be transparent, if possible, in daylight by a disposable cuvette filled with the sunscreen composition according to the invention (Brand GmbH, Wertheim / Germany, dimensions: 12.5 × 12.5 × 45 mm, wavelength range: 300 nm - 900 nm) with the naked eye to look. Characters (font: Arial, font size: 8) located immediately after the disposable cuvette must be clearly recognizable and readable. "Insoluble in water" or "water-insoluble" means that the organic UV filter is at 25 ° C in water to less than 0.5% by weight. "Solid" means that the organic UV filter is a solid at 25 ° C, especially in crystalline form.
Detaillierte Darstellung der Erfindung α-Hydroxycarbonsäuren wie z.B. Milchsäure, Zitronensäure, Äpfelsäure oder Weinsäure finden in kosmetischen Zubereitungen weite Anwendung. Sie werden u.a. als Feuchthaltemittel und zur Anregung des Zellstoffwechsels in der Haut für gestresste und alternde Haut eingesetzt. Da α-Hydroxycarbonsäuren schon bei niedrigen Konzentrationen zu Hautirritationen führen können, ist ihr Einsatz in kosmetischen Zubereitungen stark limitiert. Abhilfe schaffen Ester der a- Hydroxycarbonsäuren, die als Träger der α-Hydroxycarbonsäuren betrachtet wer- den können und langsam durch die auf und in der Haut anwesenden Esterasen unter Freisetzung der α-Hydroxycarbonsäuren gespalten werden. Diese Spaltung erfolgt langsam, so dass Ester der α-Hydroxycarbonsäuren einen pflegenden Langzeiteffekt auf die Haut ausüben. Durch die langsame Freisetzung der α-Hydroxycarbonsäuren auf der Haut ist es möglich, im Vergleich zu freien a- Hydroxycarbonsäuren, große Mengen der Ester der α-Hydroxycarbonsäuren mit- tels kosmetischer Zubereitungen auf die Haut aufzutragen, wo sie feuchtigkeits- spendend und beruhigend wirken. Alle Säuregruppen der erfindungsgemäß eingesetzten a-Hydroxycarbonsäure(n) sind daher verestert. DETAILED DESCRIPTION OF THE INVENTION α-Hydroxycarboxylic acids such as, for example, lactic acid, citric acid, malic acid or tartaric acid are widely used in cosmetic preparations. They are used, inter alia, as humectants and to stimulate the cell metabolism in the skin for stressed and aging skin. Since α-hydroxycarboxylic acids can lead to skin irritation even at low concentrations, their use in cosmetic preparations is severely limited. This is remedied by esters of α-hydroxycarboxylic acids, which can be regarded as carriers of the α-hydroxycarboxylic acids and are slowly cleaved by the esterases present on and in the skin with the release of the α-hydroxycarboxylic acids. This cleavage occurs slowly, so that esters of α-hydroxycarboxylic acids have a long-term care effect on the skin. Due to the slow release of the α-hydroxycarboxylic acids on the skin, it is possible, in comparison with free α-hydroxycarboxylic acids, to apply large amounts of the esters of α-hydroxycarboxylic acids to the skin by means of cosmetic preparations, where they have a moisturizing and soothing effect. All acid groups of the α-hydroxycarboxylic acid (s) used according to the invention are therefore esterified.
Die erfindungsgemäßen transparenten Sonnenschutzmittelzusammensetzungen enthalten mindestens einen Ester einer α-Hydroxycarbonsäure als Säurekomponente und als Alkoholkomponente R-OH mit R= C8-C2o-Alkyl, gesättigt oder ungesättigt, linear oder verzweigt oder deren Gemische. Besonders bevorzugt handelt es sich bei den Estern um Ester von Milchsäure, Zitronensäure, Äpfelsäure, Weinsäure oder deren Gemische als Säurekomponente und als Alkoholkomponente R- O(H) mit R= C8-C2o-Alkyl, gesättigt oder ungesättigt, linear oder verzweigt oder deren Gemische. The transparent sunscreen compositions of the invention contain at least one ester of an α-hydroxycarboxylic acid as the acid component and the alcohol component R-OH with R = C 8 -C2o-alkyl, saturated or unsaturated, linear or branched or mixtures thereof. Particularly preferably, the esters are esters of lactic acid, citric acid, malic acid, tartaric acid or mixtures thereof as the acid component and the alcohol component R-O (H) where R = C 8 -C2o-alkyl, saturated or unsaturated, linear or branched, or their mixtures.
Derartige Ester der α-Hydroxycarbonsäuren werden von Sasol/Italien unter den Namen COSMACOL® ELI (INCI: C12-13 Alkyl Lactate), COSMACOL® ECI (IN- Cl: Tri-C12-13 Alkyl Citrate), COSMACOL® ECL (INCI: Tri-C14-15 Alkyl Citrate), COSMACOL® EMI (INCI: Di-C 2-13 Alkyl Malate), COSMACOL® ETI (INCI: Di- C12-13 Alkyl Tartrate) sowie COSMACOL® ETLP (INCI: Dimyristyl Tartrate) angeboten. Neben der feuchtigkeitsspendenden und beruhigenden Wirkung auf die sonnengestresste Haut zeichnen sich diese Ester dadurch aus, dass sie gute Lö- sungsmittel für organische UV-Filter, insbesondere feste organische UV-Filter, darstellen. Such esters of α-hydroxycarboxylic acids are sold by Sasol / Italy under the name COSMACOL® ELI (INCI: C12-13 alkyl lactates), COSMACOL® ECI (INCl: tri-C12-13 alkyl citrates), COSMACOL® ECL (INCI: Tri-C14-15 alkyl citrate), COSMACOL® EMI (INCI: di-C 2-13 alkyl malate), COSMACOL® ETI (INCI: di-C12-13 alkyl tartrate) and COSMACOL® ETLP (INCI: dimyristyl tartrate) , In addition to the moisturizing and calming effect on sun-stressed skin, these esters are characterized by being good solvents for organic UV filters, especially solid organic UV filters.
Weiterhin enthalten die erfindungsgemäßen Sonnenschutzmittelzusammensetzungen mindestens einen wasserunlöslichen und festen organischen UVA- und/oder UVB-Filter wie sie im Anhang VI der Europäischen Verordnung über kosmetische Mittel Nr. 1223/2009 genannt sind. Besonders bevorzugt sind Furthermore, the sunscreen compositions according to the invention contain at least one water-insoluble and solid organic UVA and / or UVB filter as mentioned in Annex VI of the European Regulation on Cosmetic Products No. 1223/2009. Particularly preferred
Diethylamino Hydroxybenzoyl Hexyl Benzoate (Uvinul® A Plus, BASF), Diethylamino Hydroxybenzoyl Hexyl Benzoate (Uvinul® A Plus, BASF),
Ethylhexyl Methoxycinnamate (z.B. Eusolex® 2292, Merck), Ethyl Triazone (Uvinul® T 150, BASF), Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine Ethylhexyl methoxycinnamates (e.g., Eusolex® 2292, Merck), ethyl triazone (Uvinul® T 150, BASF), bis-ethylhexyloxyphenol methoxyphenyl triazines
(Tinosorb® S, BASF) sowie Butyl Methoxydibenzoylmethane (Eusolex® 9020, Merck). Die wasserunlöslichen und festen organischen UV-Filter sind in den Estern der a- Hydroxycarbonsäuren oder deren Mischungen und den Sonnenschutzmittelzusammensetzungen löslich. Daher sind die Sonnenschutzmittelzusammensetzungen auch transparent. Neben dem zumindest einen wasserunlöslichen und festen organischen UVA- oder UVB-Filter oder deren Gemische können z.B. auch flüssige lösliche UVA- oder UVB-Filter oder deren Gemische vorliegen. (Tinosorb® S, BASF) and butyl methoxydibenzoylmethane (Eusolex® 9020, Merck). The water-insoluble and solid organic UV filters are soluble in the esters of α-hydroxycarboxylic acids or mixtures thereof and the sunscreen compositions. Therefore, the sunscreen compositions are also transparent. In addition to the at least one water-insoluble and solid organic UVA or UVB filter or mixtures thereof, for example, liquid soluble UVA or UVB filters or mixtures thereof may also be present.
Die erfindungsgemäßen transparenten Sonnenschutzmittelzusammensetzungen enthalten maximal 1 Gew.-% Wasser und maximal 1 Gew.-% Ethanol und sind damit im Wesentlichen frei von Wasser und im Wesentlichen frei von Ethanol.The transparent sunscreen compositions according to the invention contain not more than 1% by weight of water and not more than 1% by weight of ethanol and are thus substantially free of water and essentially free of ethanol.
Weiterhin enthalten die erfindungsgemäßen transparenten Sonnenschutzmittelzusammensetzungen vorzugsweise maximal 1 Gew.-% eines C3- Alkohols und vorzugsweise maximal 1 Gew.-% eines C4-Alkohols. In einer weiteren Ausgestaltung der vorliegenden Erfindung können durch den Einsatz eines oder mehrerer Verdickungsmittel, umfassend hydrophile amorphe Silikate, hydrophobe amorphe Silikate, Silikatsalze oder deren Gemische transparente und gelartige Sonnenschutzmittelzusammensetzungen hergestellt werden. Beispielhaft seien die Aerosil® - und Sipernat®-Typen von Evonik Industries und die Wacker® HDK-Typen der Wacker Chemie genannt. Furthermore, the transparent sunscreen compositions according to the invention preferably contain not more than 1% by weight of a C 3 -alcohol and preferably not more than 1% by weight of a C 4 -alcohol. In a further embodiment of the present invention, transparent and gel-like sunscreen compositions can be prepared by using one or more thickeners comprising hydrophilic amorphous silicates, hydrophobic amorphous silicates, silicate salts or mixtures thereof. Examples include the Aerosil® and Sipernat® grades from Evonik Industries and the Wacker® HDK grades from Wacker Chemie.
Die erfindungsgemäßen transparenten Sonnenschutzmittelzusammensetzungen enthalten, wenn diese als Sprays eingesetzt werden, 0 bis 2 Gew.-%, insbesondere 0 bis 1 Gew.-% wie 0,01 bis 0,1 Gew.-%, obiger Verdickungsmittel. Die erfin- dungsgemäßen transparenten Sonnenschutzmittelzusammensetzungen enthalten, wenn diese als Gele eingesetzt werden, 0-10 Gew.-%, insbesondere 1 bis 8 Gew.- % und besonders bevorzugt 1 ,5 bis 4 Gew.-% obiger Verdickungsmittel. When used as sprays, the transparent sunscreen compositions according to the invention contain 0 to 2% by weight, in particular 0 to 1% by weight, such as 0.01 to 0.1% by weight, of the above thickener. When used as gels, the transparent sunscreen compositions according to the invention contain 0-10% by weight, in particular 1 to 8% by weight and more preferably 1% to 5% by weight of the above thickener.
Die erfindungsgemäßen transparenten Sonnenschutzmittelzusammensetzungen können weiterhin außer den Estern der α-Hydroxycarbonsäuren weitere Öle oder Wachse oder deren Gemische. Vorteilhaft werden die Öle und/oder Wachse aus der Gruppe der Lecithine, Triglyceride gesättigter oder ungesättigter, verzweigter und/oder linearer Alkylcarbonsäuren einer Kettenlänge von 6 bis 24, insbesondere 12 bis 18 C-Atomen, gewählt, einschließlich deren Gemische. Die Triglyceride können vorteilhaft synthetische, halbsynthetische oder natürliche Öle und/oder Wachse sein, wie z.B. Triistostearin, Sojaöl, Rizinusöl, Olivenöl, Safloröl, Weizenkeimöl, Traubenkernöl, Erdnußöl, Sonnenblumenöl, Mandelöl, Palmöl, Palmkernöl, Kokosöl, Distelöl, Nachtkerzenöl, Rapsöl und dergleichen. The transparent sunscreen compositions according to the invention may further comprise, in addition to the esters of α-hydroxycarboxylic acids, further oils or waxes or mixtures thereof. Advantageously, the oils and / or waxes from the group of lecithins, triglycerides of saturated or unsaturated, branched and / or linear alkylcarboxylic acids having a chain length of 6 to 24, in particular 12 to 18 carbon atoms, are selected, including mixtures thereof. The triglycerides may advantageously be synthetic, semi-synthetic or natural oils and / or waxes, such as tristostearin, soybean oil, castor oil, olive oil, safflower oil, wheat germ oil, grapeseed oil, peanut oil, sunflower oil, almond oil, palm oil, palm kernel oil, coconut oil, thistle oil, evening primrose oil, rapeseed oil and like.
Weiterhin können die Öle und/oder Wachse aus der Gruppe der verzweigten und/oder linearen Kohlenwasserstoffe wie z.B. Paraffinwachse, Vaseline Furthermore, the oils and / or waxes may be selected from the group of branched and / or linear hydrocarbons, such as e.g. Paraffin waxes, Vaseline
(Petrolatum), Mineralöl, Paraffinöl, Isohexadecan, Dodecan, Tetradecan, (Petrolatum), mineral oil, paraffin oil, isohexadecane, dodecane, tetradecane,
Hexadecan, Octadecan, Docosan und Polyolefine bestehen. Die Öle und/oder Wachse können im Sinne der vorliegenden Erfindung ferner vorteilhaft gewählt werden aus der Gruppe der Ester aus gesättigten und/oder ungesättigten, verzweigten und/oder linearen Alkylcarbonsäuren einer Kettenlänge von 3 bis 30 C- Atomen und gesättigten oder ungesättigten, verzweigten oder linearen Alkoholen einer Kettenlänge von 3 bis 30 C-Atomen, einschließlich deren Gemische. Bei- spielhaft seien genannt: Jojobaöl, Isopropylmyristat, Isopropylpalmitat, Hexadecane, octadecane, docosan and polyolefins exist. For the purposes of the present invention, the oils and / or waxes can furthermore advantageously be selected from the group of esters of saturated and / or unsaturated, branched and / or linear alkylcarboxylic acids having a chain length of 3 to 30 carbon atoms and saturated or unsaturated, branched or linear alcohols having a chain length of 3 to 30 carbon atoms, including mixtures thereof. Examples are: jojoba oil, isopropyl myristate, isopropyl palmitate,
Isopropylstearat, Isopropyloleat, n-Butylstearat, n-Hexyllaurat, n-Decyloleat, Isooctylstearat, Isononylstearat, Isononylisononanoat, 2-Ethylhexylpalmitat, 2- Ethylhexyllaurat, 2-Hexyldecylstearat, 2-Octyldodecylpalmitat, Oleyloleat,  Isopropyl stearate, isopropyl oleate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, isooctyl stearate, isononyl stearate, isononyl isononanoate, 2-ethylhexyl palmitate, 2-ethylhexyl laurate, 2-hexyldecyl stearate, 2-octyldodecyl palmitate, oleyl oleate,
Oleylerucat, Erucyloleat und Erucylerucat. Ferner können die erfindungsgemäßen Emulsionen Öle und/oder Wachse aus der Gruppe der Silikonöle (cyclisch und/oder linear) sowie der Gruppe der Dialkylether, wie z.B. Dicaprylylether oder Distearylether, oder der Gruppe der Dialkylcarbonate enthalten. Auch Ester aromatischer Carbonsäuren mit gesättigten oder ungesättigten, verzweigten oder linearen Alkoholen einer Kettenlänge von 3 bis 30 C-Atomen, einschließlich deren Gemische, wie z.B. von C12-i5-Alkylbenzoat, können in den erfindungsgemäßen transparenten Sonnenschutzmitteln Verwendung finden. Auch beliebige Mischungen solcher Öl- und Wachskomponenten sind vorteilhaft im Sinne der vorliegenden Erfindung einzusetzen. Die erfindungsgemäßen transparenten Sonnenschutzmittelzusammensetzungen enthalten bevorzugt gesättigte oder ungesättigte, verzweigte oder lineare Alkohole einer Kettenlänge von 10 bis 30 C-Atomen, einschließlich deren Gemische. Besonders bevorzugt sind Guerbetalkohole, wie ISOFOL® 12 (INCI: Butyloctanol, Sasol Germany), ISOFOL® 16 (INCI: Hexyldecanol), ISOFOL® 18 T (INCI: Oleyl erucate, erucyl oleate and erucyl erucate. Furthermore, the emulsions of the invention oils and / or waxes from the group of silicone oils (cyclic and / or linear) and the group of dialkyl ethers, such as dicaprylyl ether or distearyl ether, or the group of dialkyl carbonates. Also, esters of aromatic carboxylic acids with saturated or unsaturated, branched or linear alcohols having a chain length of 3 to 30 carbon atoms, including mixtures thereof, such as C 12-15 -alkyl benzoate, can be used in the transparent sunscreens according to the invention. Any mixtures of such oil and wax components are advantageous to use in the context of the present invention. The transparent sunscreen compositions according to the invention preferably contain saturated or unsaturated, branched or linear alcohols of a chain length of 10 to 30 carbon atoms, including mixtures thereof. Guerbet alcohols, such as ISOFOL® 12 (INCI: butyloctanol, Sasol Germany), ISOFOL® 16 (INCI: hexyldecanol), ISOFOL® 18 T (INCI:
Octyldecanol) oder ISOFOL® 20 (INCI: Octyldodecanol), einschließlich deren Gemische. Weiterhin können die erfindungsgemäßen transparenten Sonnenschutzmittelzusammensetzungen weitere kosmetische und/oder pharmazeutische Hilfs-, Zusatz- und/oder Wirkstoffe enthalten. Dies sind beispielhaft: kühlende Stoffe wie z.B. Menthol, Farbstoffe, Parfüme, Antioxidantien, Pflanzenextrakte, Antitranspirantien, Bräunungsmittel, Filmbildner, Eiweißhydrolysate, Vitamine, antimikrobielle Stoffe und dergleichen. Octyldecanol) or ISOFOL® 20 (INCI: octyldodecanol), including mixtures thereof. Furthermore, the transparent sunscreen compositions according to the invention may contain further cosmetic and / or pharmaceutical auxiliaries, additives and / or active ingredients. These are, for example, cooling substances such as menthol, dyes, perfumes, antioxidants, plant extracts, antiperspirants, browning agents, film formers, protein hydrolysates, vitamins, antimicrobial substances and the like.
Beispiele Die nachfolgenden Beispiele sollen die vorliegende Erfindung verdeutlichen, ohne sie einzuschränken. Alle Mengenangaben sind auf das Gewicht und die Gesamtmenge der Zubereitungen bezogen. Examples The following examples are intended to illustrate the present invention without limiting it. All quantities are based on the weight and the total amount of the preparations.
Die Phase A wurde bis ca. 60°C erhitzt und es wurde gerührt, bis die Probe klar wurde. Die Probe wurde auf ca. 30°C abkühlen gelassen und Phase B wurde zugeben und homogenisiert. Zur Herstellung der Gele wurde Phase C zugeben und mittels Ultra-Turrax homogenisiert. Anschließend wurde das Gel unter Vakuum entschäumt. Bestimmung des Klarschmelzpunktes: Ein Reagenzglas bzw. Shukoff-Kölbchen wird mit 5-10 ml_ des zu prüfenden, klaren Produktes gefüllt und mit einem Kältethermometer versehen. Die Probe wird im Kryostatbad auf mindestens -20°C gekühlt, bis die Probe vollständig eingefroren ist. Anschließend wird die Probe bei Raumtemperatur langsam aufgetaut. Als Klarschmelzpunkt gilt die Temperatur, bei der die Probe keine erkennbare Trübung mehr zeigt. Als Ergebnis wurde das arithmetische Mittel aus zwei Bestimmungen angegeben, sofern deren Differenz 1 °C nicht überschreitet. Phase A was heated to about 60 ° C and stirred until the sample became clear. The sample was allowed to cool to about 30 ° C and phase B was added and homogenized. To prepare the gels, phase C was added and homogenized by means of Ultra-Turrax. Subsequently, the gel was defoamed under vacuum. Determination of the clear melting point: A test tube or Shukoff flask is filled with 5-10 ml_ of the clear product to be tested and fitted with a cold thermometer. The sample is cooled in the cryostat bath to at least -20 ° C until the sample is completely frozen. Subsequently, the sample is slowly thawed at room temperature. The clear melting point is the temperature at which the sample no longer shows any noticeable turbidity. As a result, the arithmetic mean was given from two determinations, unless the difference thereof exceeds 1 ° C.
Die jeweiligen Rezepturen und Ergebnisse der Untersuchungen sind in den Tabel- len 1a, 1b, 2a und 2b dargestellt. Tabelle 1a Transparente Sonnenschutzsprays - Rezepturen: The respective formulations and results of the investigations are shown in Tables 1a, 1b, 2a and 2b. Table 1a Transparent sunscreen sprays - formulations:
Tabelle 1 b Transparente Sonnenschutzsprays - Eigenschaften: Table 1 b Transparent sunscreen sprays - Properties:
Tabelle 2a Transparente Sonnenschutzgele - Rezepturen: Table 2a Transparent sunscreen gels - formulations:
Tabelle 2b Transparente Sonnenschutzgele - Eigenschaften: Table 2b Transparent sunscreen gels - Properties:
Legende zu Tabelle 1 a und 2a Legend to Table 1 a and 2a
*) Hersteller: (1) =Sasol Germany GmbH (2) = Sasol Italy S.p.A. * ) Manufacturer: (1) = Sasol Germany GmbH (2) = Sasol Italy SpA
(3) = BASF AG (4) = Merck KgaA (5) = Innolex Chemical Co. (6) = DSM Nutritional Products Ltd. (7)= Evonic Ind. AG  (3) = BASF AG (4) = Merck KgaA (5) = Innolex Chemical Co. (6) = DSM Nutritional Products Ltd. (7) = Evonic Ind. AG
) www.sunscreensimulator.basf.com/Sunscreen Simulator/Login show.action ) www.sunscreensimulator.basf.com/Sunscreen Simulator / Login show.action

Claims

Patentansprüche: claims:
1. Transparente Sonnenschutzmittelzusammensetzung enthaltend A transparent sunscreen composition containing
(a) mindestens einen Ester einer a-Hydroxycarbonsäure,  (a) at least one ester of a-hydroxycarboxylic acid,
(b) mindestens einen wasserunlöslichen und festen organischen UV-Filter, (b) at least one water-insoluble and solid organic UV filter,
(c) maximal 1 Gew.-% Wasser, und (c) at most 1% by weight of water, and
(d) maximal 1 Gew.-% Ethanol.  (d) at most 1% by weight of ethanol.
2. Sonnenschutzmittelzusammensetzung nach Anspruch 1 enthaltend weiterhin The sunscreen composition of claim 1 further containing
(e) 0-10 Gew.-% eines oder mehrerer Verdickungsmittel, umfassend  (e) 0-10% by weight of one or more thickening agents comprising
Silikatsalze, hydrophile oder hydrophobe, amorphe Silikate oder deren Gemische.  Silicate salts, hydrophilic or hydrophobic, amorphous silicates or mixtures thereof.
3. Sonnenschutzmittelzusammensetzung nach Anspruch 1 enthaltend weiterhin The sunscreen composition of claim 1 further containing
(f) 0 bis 60 Gew.-%, vorzugsweise 5 bis 50 Gew.-%, insbesondere bevorzugt 10 bis 40 Gew.-%, gesättigte oder ungesättigte, verzweigte oder lineare Alkohole einer Kettenlänge von 10 bis 30 C-Atomen oder deren Mischungen, vorzugsweise C10- bis C30- Guerbetalkohole.  (f) 0 to 60 wt .-%, preferably 5 to 50 wt .-%, particularly preferably 10 to 40 wt .-%, saturated or unsaturated, branched or linear alcohols having a chain length of 10 to 30 carbon atoms or mixtures thereof , preferably C10 to C30 Guerbet alcohols.
4. Sonnenschutzmittelzusammensetzung nach Anspruch 1 , wobei der Ester einer α-Hydroxycarbonsäure als Alkoholkomponente R-O-(H) Alkohole mit R C8- C20-Alkyl, gesättigt oder ungesättigt, linear oder verzweigt oder deren Gemische, aufweist. 4. A sunscreen composition according to claim 1, wherein the ester of an α-hydroxycarboxylic acid as the alcohol component R-O- (H) alcohols having R C8-C20-alkyl, saturated or unsaturated, linear or branched or mixtures thereof.
5. Sonnenschutzmittelzusammensetzung nach Anspruch 1 oder 2, wobei der Ester einer α-Hydroxycarbonsäure (a) als Säurekomponente Milchsäure, Zitronensäure, Äpfelsäure, Weinsäure oder deren Mischungen aufweist. A sunscreen composition according to claim 1 or 2, wherein the ester of an α-hydroxycarboxylic acid (a) as the acid component comprises lactic acid, citric acid, malic acid, tartaric acid or mixtures thereof.
6. Sonnenschutzmittelzusammensetzung nach Anspruch 1 , 4 oder 5, wobei 5 bis 95 Gew.-%, vorzugsweise 10 bis 85 Gew.-% und besonders bevorzugt 15 bis 80 Gew.-%, der Ester einer α-Hydroxycarbonsäure in der Sonnenschutzmittelzusammensetzung enthalten sind. The sunscreen composition according to claim 1, 4 or 5, wherein 5 to 95% by weight, preferably 10 to 85% by weight and more preferably 15 to 80% by weight, of the ester of an α-hydroxycarboxylic acid is contained in the sunscreen composition ,
7. Sonnenschutzmittelzusammensetzung nach Anspruch 1 , wobei die wasserunlöslichen und festen organischen UV-Filter Diethylamino Hydroxybenzoyl Hexyl Benzoate, Ethylhexyl Methoxycinnamate, Ethyl Triazone, Bis- Ethylhexyloxyphenol Methoxyphenyl Triazine, Butyl Methoxydibenzoylmethane oder deren Mischungen sind oder umfassen. The sunscreen composition of claim 1, wherein the water-insoluble and solid organic UV filters are diethylamino hydroxybenzoyl Hexyl benzoates, ethylhexyl methoxycinnamates, ethyl triazone, bis-ethylhexyloxyphenol, methoxyphenyl triazines, butyl methoxydibenzoylmethanes or mixtures thereof are or include.
8. Sonnenschutzmittelzusammensetzung nach Anspruch 1 enthaltend weiterhin The sunscreen composition of claim 1 further comprising
(g) Öle oder Wachse oder deren Gemische.  (g) oils or waxes or mixtures thereof.
9. Verwendung der Sonnenschutzmittelzusammensetzung nach einem der vorhergehenden Ansprüche als Sonnenschutzmittel, insbesondere als Sonnenschutzspray welches vorzugsweise mit einer Handpumpe spraybar ist. 9. Use of the sunscreen composition according to one of the preceding claims as a sunscreen, in particular as a sunscreen spray which is preferably sprayable with a hand pump.
10. Verwendung der Sonnenschutzmittelzusammensetzung nach einem der Ansprüche 1 bis 8 als Sonnenschutzgel. 10. Use of the sunscreen composition according to any one of claims 1 to 8 as a sunscreen gel.
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RU2016105514A3 (en) 2018-05-31
DE202013103395U1 (en) 2013-08-13
CA2917737A1 (en) 2015-01-29
BR112016001715B1 (en) 2020-08-11
WO2015010679A1 (en) 2015-01-29
AU2014295502B2 (en) 2019-10-17
RU2016105514A (en) 2017-08-31
ZA201600140B (en) 2017-04-26
RU2684776C2 (en) 2019-04-15
DE202013103395U9 (en) 2014-08-28
DE112014003462A5 (en) 2016-06-23
MY183624A (en) 2021-03-03
BR112016001715A2 (en) 2017-09-19
AU2014295502A1 (en) 2016-01-28
US20160166485A1 (en) 2016-06-16

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