Information
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Patent Application
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20020182234
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Publication Number
20020182234
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Date Filed
December 14, 200123 years ago
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Date Published
December 05, 200222 years ago
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Inventors
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Original Assignees
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CPC
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US Classifications
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International Classifications
Abstract
Self-foaming and/or foam-like cosmetic or dermatological preparations which comprise
Description
[0001] The present invention relates to self-foaming and/or foam-like cosmetic and dermatological preparations, in particular to skincare cosmetic and dermatological preparations.
[0002] Foams or foam-like preparations are a type of disperse system.
[0003] By far the most important and best known disperse systems are emulsions. Emulsions are two- or multi-phase systems of two or more liquids which are insoluble or only slightly soluble in one another. The liquids (pure or as solutions) are present in an emulsion in a more or less fine distribution, which generally has only limited stability.
[0004] Foams are structures of gas-filled, spherical or polyhedral cells which are delimited by liquid, semiliquid, high-viscosity or solid cell ribs. The cell ribs, connected via points of intersection form a continuous framework. The foam lamellae stretch between the cell ribs (closed-cell foam). If the foam lamellae are disturbed or if they flow back into the cell rib at the end of foam formation, an open-cell foam is obtained. Foams are also thermodynamically unstable since a reduction in the surface area leads to the production of surface energy. The stability and thus the existence of a foam is thus dependent on to what extent it is possible to prevent its self-destruction.
[0005] Cosmetic foams are usually dispersed systems of liquids and gases, where the liquid represents the dispersant and the gas represents the dispersed substance. Foams of low-viscosity liquids are temporarily stabilized by surface-active substances (surfactants, foam stabilizers). Because of their large internal surface area, such surfactant foams have a high adsorption capacity, which is utilized, for example, in cleaning and washing operations. Accordingly, cosmetic foams are used, in particular, in the fields of cleansing, for example as shaving foam, and of haircare.
[0006] To generate foam, gas is bubbled into suitable liquids, or foam formation is achieved by vigorously beating, shaking, spraying or stirring the liquid in the gas atmosphere in question, provided that the liquids comprise suitable surfactants or other interface-active substances (“foam formers”), which, apart from interfacial activity, also have a certain film-forming ability.
[0007] Cosmetic foams have the advantage over other cosmetic preparations that they permit a fine distribution of active ingredients on the skin. However, cosmetic foams can generally only be achieved using particular surfactants, which, moreover, are often not well tolerated by the skin.
[0008] A further disadvantage of the prior art is that such foams have only low stability, for which reason they usually collapse within approximately 24 hours. A requirement of cosmetic preparations, however, is that they have stability for years, as far as possible. This problem is generally taken into account by the fact that the consumer produces the actual foam himself just before use using a suitable spray system for which purpose, for example, it is possible to use spray cans in which a liquefied pressurized gas serves as propellant gas. Upon opening the pressure valve, the propellant liquid mixture escapes through a fine nozzle, and the propellant evaporates, leaving behind a foam.
[0009] After-foaming cosmetic preparations are also known per se. They are firstly applied to the skin from an aerosol container in flowable form and, after a short delay, develop the actual foam only once they are on the skin under the effect of the after-foaming agent present, for example a shaving foam. After-foaming preparations are often in specific formulation forms, such as, for example, after-foaming shaving gels or the like.
[0010] However, the prior art does not include any sort of cosmetic or dermatological preparations which could be foamed as early as during the preparation and nevertheless have a sufficiently high stability in order to be packaged in the usual manner, stored and put on to the market.
[0011] An object of the present invention was therefore to enrich the prior art and to provide cosmetic or dermatological self-foaming and/or foam-like preparations which do not have the disadvantages of the prior art.
[0012] German laid-open specification DE 197 54 659 discloses that carbon dioxide is a suitable active ingredient for stabilizing or increasing the epidermal ceramide synthesis rate, which may serve to enhance the permeability barrier, reduce the transepidermal water loss and increase the relative skin moisture. To treat the skin, the CO2 is, for example, dissolved in water, which is then used to rinse the skin. However, the prior art hitherto does not include any sort of cosmetic or dermatological bases in which a gaseous active ingredient could be incorporated in an adequate, i.e. effective, concentration.
[0013] It was thus a further object of the present invention to find cosmetic or dermatological bases into which effective amounts of gaseous active ingredients can be incorporated.
[0014] It was surprising and could not have been foreseen by the person skilled in the art that self-foaming and/or foam-like cosmetic or dermatological preparations which comprise
[0015] I. an emulsifier system which consists of
[0016] A. at least one emulsifier A chosen from the group of wholly neutralized, partially neutralized or unneutralized branched and/or unbranched, saturated and/or unsaturated fatty acids having a chain length of from 10 to 40 carbon atoms,
[0017] B. at least one emulsifier B chosen from the group of polyethoxylated fatty acid esters having a chain length of from 10 to 40 carbon atoms and a degree of ethoxylation of from 5 to 100 and
[0018] C. at least one coemulsifier C chosen from the group of saturated and/or unsaturated, branched and/or unbranched fatty alcohols having a chain length of from 10 to 40 carbon atoms, and
[0019] II. 1 to 90% by volume, based on the total volume of the preparation, of at least one gas chosen from the group consisting of air, oxygen, nitrogen, helium, argon, nitrous oxide (N2O) and carbon dioxide (CO2). overcome the disadvantages of the prior art.
[0020] For the purposes of the present invention, “self-foaming” or “foam-like” are understood as meaning that the gas bubbles (any) are present in distributed form in one (or more) liquid phase(s) where the preparations do not necessarily have to have the appearance of a foam in macroscopic terms. Self-foaming and/or foam-like cosmetic or dermatological preparations according to the invention can, for example be macroscopically visible and dispersed systems of gases dispersed in liquids. The foam character can, however, for example, be visible also only under a (light) microscope. Moreover, self-foaming and/or foam-like preparations according to the invention are, particularly when the gas bubbles are too small in order to be recognized under a light microscope, also recognizable from the sharp increase in volume of the system.
[0021] The preparations according to the invention are entirely satisfactory preparations in every respect. It was particularly surprising that the foam-like preparations according to the invention are extraordinarily stable, even in cases of an unusually high gas volume. Accordingly, they are particularly suitable for use as bases for preparation forms having diverse use purposes. The preparations according to the invention have very good sensory properties, such as, for example, distributability on the skin or the ability to be absorbed into the skin, and are, moreover, characterized by above-average skincare.
[0022] The invention further provides for the use of self-foaming and/or foam-like cosmetic or dermatological preparations which comprise
[0023] an emulsifier system which consists of
[0024] A. at least one emulsifier A chosen from the group of wholly neutralized, partially neutralized or unneutralized branched and/or unbranched, saturated and/or unsaturated fatty acids having a chain length of from 10 to 40 carbon atoms,
[0025] B. at least one emulsifier B chosen from the group of polyethoxylated fatty acid esters having a chain length of from 10 to 40 carbon atoms and a degree of ethoxylation of from 5 to 100 and
[0026] C. at least one coemulsifier C chosen from the group of saturated and/or unsaturated, branched and/or unbranched fatty alcohols having a chain length of from 10 to 40 carbon atoms
[0027] as cosmetic or dermatological bases for gaseous active ingredients.
[0028] The emulsifier(s) A is/are preferably chosen from the group of fatty acids which have been wholly or partially neutralized with customary alkalies (such as, for example, sodium hydroxide and/or potassium hydroxide, sodium carbonate and/or potassium carbonate, and mono- and/or triethanolamine). Stearic acid and stearates, isostearic acid and isostearates, palmitic acid and palmitates, and myristic acid and myristates, for example, are particularly advantageous.
[0029] The emulsifier(s) B is/are preferably chosen from the following group: PEG-9 stearate, PEG-8 distearate, PEG-20 stearate, PEG-8 stearate, PEG-8 oleate, PEG-25 glyceryl trioleate, PEG-40 sorbitan lanolate, PEG-15 glyceryl ricinoleate, PEG-20 glyceryl stearate, PEG-20 glyceryl isostearate, PEG-20 glyceryl oleate, PEG-20 methylglucose sesquistearate, PEG-30 glyceryl isostearate, PEG-20 glyceryl laurate, PEG-30 stearate, PEG-30 glyceryl stearate, PEG-40 stearate, PEG-30 glyceryl laurate, PEG-50 stearate, PEG-100 stearate, PEG-150 laurate. Particularly advantageous are, for example, polylethoxylated stearic esters.
[0030] The coemulsifier(s) C is/are preferably chosen according to the invention from the following group: butyloctanol, butyldecanol, hexyloctanol, hexyldecanol, octyldodecanol, behenyl alcohol (C22H45OH), cetearyl alcohol [a mixture of cetyl alcohol (C16H33OH) and stearyl alcohol (C18H37OH)], lanolin alcohols (wool wax alcohols, which are the unsaponifiable alcohol fraction of wool wax which is obtained following the saponification of wool wax). Particular preference is given to cetyl alcohol and cetylstearyl alcohol.
[0031] It is advantageous according to the invention to choose the weight ratios of emulsifier A to emulsifier B to coemulsifier C (A:B:C) as a:b:c, where a, b and c, independently of one another, may be rational numbers from 1 to 5, preferably from 1 to 3. Particular preference is given to a weight ratio of approximately 1:1:1.
[0032] It is advantageous for the purposes of the present invention to choose the total amount of emulsifiers A and B and of coemulsifier C from the range from 2 to 20% by weight, advantageously from 5 to 15% by weight, in particular from 8 to 13% by weight, in each case based on the total weight of the formulation.
[0033] For the purposes of the present invention, it is particularly preferred if the gas phase of the preparations comprises carbon dioxide or consists entirely of carbon dioxide. It is particularly advantageous if carbon dioxide is a or the active ingredient in the preparations according to the invention.
[0034] Compositions according to the invention develop, even during their preparation—for example during stirring or upon homogenization—fine-bubble foams. According to the invention, fine-bubble, rich foams of excellent cosmetic elegance are obtainable. Furthermore, preparations which are particularly well tolerated by the skin are obtainable according to the invention, where valuable ingredients can be distributed on the skin in a particularly good manner.
[0035] It may be advantageous, although it is not necessary, for the formulations according to the present invention to comprise further emulsifiers. Preference is given to using those emulsifiers which are suitable for the preparation of W/O emulsions, it being possible for these to be present either individually or else in any combinations with one another.
[0036] The further emulsifier(s) is/are advantageously chosen from the group which comprises the following compounds: polyglyceryl-2 dipolyhydroxystearate, PEG-30 dipolyhydroxystearate, cetyldimethicone copolyol, glycol distearate, glycol dilaurate, diethylene glycoldilaurate, sorbitan trioleate, glycol oleate, glyceryl dilaurate, sorbitan tristearate, propylene glycol stearate, propylene glycol laurate, propylene glycol distearate, sucrose distearate, PEG-3 castor oil, pentaerythrityl mono stearate, pentaerythrityl sesquioleate, glyceryl oleate, glyceryl stearate, glyceryl diisostearate, pentaerythrityl monooleate, sorbitan sesquioleate, isostearyl diglyceryl succinate, glyceryl caprate, palm glycerides, cholesterol, lanolin, glyceryl oleate (with 40% monoester), polyglyceryl-2 sesquiisostearate, polyglyceryl-2 sesquioleate, PEG-20 sorbitan beeswax, sorbitan oleate, sorbitan isostearate, trioleyl phosphate, glyceryl stearate and ceteareth-20 (Teginacid from Th. Goldschmidt), sorbitan stearate, PEG-7 hydrogenated castor oil, PEG-5-soyasterol, PEG-6 sorbitan beeswax, glyceryl stearate SE, methylglucose sesquistearates, PEG-10 hydrogenated castor oil, sorbitan palmitate, PEG-22/dodecyl glycol copolymer, polyglyceryl-2 PEG-4 stearate, sorbitan laurate, PEG-4 laurate, polysorbate 61, polysorbate 81, polysorbate 65, polysorbate 80, triceteareth-4 phosphate, triceteareth-4 phosphate and sodium C14-17 alkyl sec sulfonate (Hostacerin CG from Hoechst), glyceryl stearate and PEG-100 stearates (Arlacel 165 from ICI), polysorbate 85, trilaureth-4 phosphate, PEG-35 castor oil, sucrose stearate, trioleth-8 phosphate, C12-5 pareth-12, PEG-40 hydrogenated castor oil, PEG-16 soyasterol, polysorbate 80, polysorbate 20, polyglyceryl-3 methylglucose distearate, PEG-40 castor oil, sodium cetearyl sulfate, lecithin, laureth-4 phosphate, propylene glycol stearate SE, PEG-25 hydrogenated castor oil, PEG-54 hydrogenated castor oil, glyceryl stearate SE, PEG-6 caprylic/capric glycerides, glyceryl oleate and propylene glycol, glyceryl lanolate, polysorbate 60, glyceryl myristate, glyceryl isostearate and polyglyceryl-3 oleate, glyceryl laurate, PEG-40 sorbitan peroleate, laureth-4, glycerol monostearate, isostearyl glyceryl ether, cetearyl alcohol and sodium cetearyl sulfate, PEG-22 dodecyl glycol copolymer, polyglyceryl-2 PEG-4 stearate, pentaerythrityl isostearate, polyglyceryl-3-diisostearate, sorbitan oleate and hydrogenated castor oil and Cera alba and stearic acid, sodium dihydroxycetyl phosphate and isopropyl hydroxycetyl ether, methylglucose sesquistearate, methylglucose dioleate, sorbitan oleate and PEG-2 hydrogenated castor oil and ozokerite and hydrogenated castor oil, PEG-2 hydrogenated castor oil, PEG-45/dodecyl glycol copolymer, methoxy PEG-22/dodecyl glycol copolymer, hydrogenated cocoglycerides, polyglyceryl-4 isostearate, PEG-40 sorbitan peroleate, PEG-40 sorbitan perisostearate, PEG-8 beeswax, laurylmethicone copolyol, Polyglyceryl-2 laurate, stearamidopropyl PG dimonium chloride phosphate, PEG-7 hydrogenated castor oil, triethyl citrate, glyceryl stearate citrate, cetyl phosphate, polyglycerol methylglucose distearate, poloxamer 101, potassium cetyl phosphate, glyceryl isostearate, polyglyceryl-3 diisostearates.
[0037] Preferably, for the purposes of the present invention, the further emulsifier(s) is/are chosen from the group of hydrophilic emulsifiers. According to the invention, particular preference is given to mono-, di- and tri-fatty acid esters of sorbitol.
[0038] The total amount of further emulsifiers is, according to the invention, advantageously chosen to be less than 5% by weight, based on the total weight of the formulation.
[0039] The list of given further emulsifiers which can be used for the purposes of the present invention is not of course intended to be limiting.
[0040] Particularly advantageous self-foaming and/or foam-like preparations for the purposes of the present invention are free from mono- or diglyceryl fatty acid esters. Particular preference is given to preparations according to the invention which comprise no glyceryl stearate, glyceryl isostearate, glyceryl diisostearate, glyceryl oleate, glyceryl palmitate, glyceryl myristate, glyceryl lanolate and/or glyceryl laurate.
[0041] The oil phase of the preparations according to the invention is advantageously chosen from the group of nonpolar lipids having a polarity ≧30 mN/m. Particularly advantageous nonpolar lipids for the purposes of the present invention are those listed below.
1|
|
Polarity
ManufacturerTrade nameINCI namemN/m
|
Total SAEcolane 130Cycloparaffin49.1
Neste PAO N.V.Nexbase 2006 FGPolydecene46.7
(Supplier Hansen & Rosenthal)
Chemische Fabrik LehrtePolysynlaneHydrogenated Polyisobutene44.7
WackerWacker Silicon oil AKPolydimethylsiloxane46.5
50
EC Erdölchemie (Supplier Bayer AG)Solvent ICHIsohexadecane43.8
DEA Mineralöl (Supplier Hansen &Pionier 2076Mineral Oil43.7
Rosenthal) Tudapetrol
DEA Mineralöl (Supplier Hansen &Pionier 6301Mineral Oil43.7
Rosenthal) Tudapetrol
WackerWacker Silicone oil AKPolydimethylsiloxane42.4
35
EC Erdölchemie GmbHIsoeicosaneIsoeicosane41.9
WackerWacker Silicone oil AKPolydimethylsiloxane40.9
20
Condea ChemieIsofol 1212 Carbonate40.3
GattefosséSoftcutol OEthoxydiglycol Oleate40.5
CreadermLipodermanol OLDecyl Olivate40.3
HenkelCetiol SDioctylcyclohexane39.0
DEA Mineralöl (Supplier Hansen &Pionier 2071Mineral Oil38.3
Rosenthal) Tudapetrol
WITCO BVHydrobrite 1000 POParaffinum Liquidum37.6
GoldschmidtTegosoft HPIsocetyl Palmitate36.2
Condea ChemieIsofol Ester 169333.5
Condea ChemieIsofol Ester 126033.0
Dow ComingDow Corning Fluid 245Cyclopentasiloxane32.3
UnichemaPrisorine 2036Octyl Isostearate31.6
Henkel CognisCetiol CCDicaprylyl Carbonate31.7
ALZO (ROVI)Dermol 99Trimethylhexyl Isononanoate31.1
ALZO (ROVI)Dermol 892-Ethylhexyl Isononanoate31.0
UnichemaEstol 1540 EHCOctyl Cocoate30.0
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[0042] The content of the lipid phase is advantageously chosen to be less than 30% by weight, preferably between 2.5 and 30% by weight, particularly preferably between 5 and 15% by weight, in each case based on the total weight of the preparation. It may also be advantageous, although it is not obligatory, for the lipid phase to comprise up to 40% by weight, based on the total weight of the lipid phase, of polar lipids (having a polarity of ≦20 mN/m) and/or medium-polarity lipids (having a polarity of from 20 to 30 mN/m)
[0043] For the purposes of the present invention, particularly advantageous polar lipids are all native lipids, such as, for example, olive oil, sunflower oil, soybean oil, groundnut oil, rapeseed oil, almond oil, palm oil, coconut oil, castor oil, wheatgerm oil, grapeseed oil, thistle oil, evening primrose oil, macadamia nut oil, corn oil, avocado oil and the like and those listed below.
2|
|
Polarity
ManufacturerTrade nameINCI namemN/m
|
Condea ChemieIsofol 14 TButyl Decanol (+) Hexyl Octanol19.8
(+)
Hexyl Decanol (+) Butyl Octanol
LipochemicalsLipovol MOS-130Tridecyl Stearate (+) Tridecyl19.4
INC./USATrimellitate (+) Dipentaerythrityl
(Induchem)Hexacaprylate/Hexacaprate
Castor oil19.2
CONDEA ChemieIsofol Ester 060419.1
HuelsMiglyol 840Propylene Glycol18.7
CONDEA ChemieDicaprylate/Dicaprate
CONDEA ChemieIsofol 12Butyl Octanol17.4
GoldschmidtTegosoft SHStearyl Heptanoate17.8
Avocado oil14.5
Henkel CognisCetiol BDibutyl Adipate14.3
ALZO (ROVI)Dermol 488PEG 2 Diethylene hexanoate10.1
Condea AugustaCosmacol ELIC12-13 Alkyl Lactate 8.8
S.P.A.
ALZO (ROVI)Dermol 489Diethylene Glycol Dioctanoate(/ 8.6
Diisononanoate
Condea AugustaCosmacol ETIDi-C12/13 Alkyl Tartrate 7.1
S.P.A.
Henkel CognisEmerest 2384Propylene Glycol 6.2
Monoisostearate
Henkel CognisMyritol 331Cocoglycerides 5.1
UnichemaPrisorine 2041Triisostearin 2.4
GTIS
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[0044] Particularly advantageous medium-polar lipids for the purposes of the present invention are those listed below
3|
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Polarity
(Water)
ManufacturerTrade nameINCI namemN/m
|
Henkel CognisCetiol OEDicaprylyl Ether30.9
Dihexyl carbonateDihexyl Carbonate30.9
Albemarle S.A.Silkflo 366 NFPolydecene30.1
Stearinerie DuboisDUB VCI 10Isodecyl Neopentanoate29.9
Fils
ALZO (ROVI)Dermol IHDIsohexyl decanoate29.7
ALZO (ROVI)Dermol 108Isodecyl Octanoate29.6
Dihexyl EtherDihexyl Ether29.2
ALZO (ROVI)Dermol 109Isodecyl 3,5,5 Trimethyl Hexanoate29.1
Henkel CognisCetiol SNCetearyl Isononanoate28.6
UnichemaIsopropyl palmitateIsopropyl palmitate28.8
Dow CorningDC Fluid 345Cyclomethicone28.5
Dow CorningDow Corning FluidCyclopolydimethylsiloxane28.5
244
Nikko ChemicalsJojoba oil Gold26.2
Superior Jojoba Oil
Gold
WackerWacker AK 100Dimethicone26.9
ALZO (ROVI)Dermol 982-Ethylhexanoic acid 3,5,5 trimethyl26.2
ester
Dow CorningDow Corning FluidOpen25.3
246
Henkel CognisEutanol GOctyldodecanol24.8
Condea ChemieIsofol 16Hexyl Decanol24.3
ALZO (ROVI)Dermol 139Isotridecyl 3,5,524.5
Trimethylhexanonanoate
Henkel CognisCetiol PGLHexyldecanol (+) Hexyl Decyl Laurate24.3
Cegesoft C24Octyl Palmitate23.1
GattefosséM.O.D.Octyldodeceyl Myristate22.1
Macadamia Nut Oil22.1
Bayer AG,Silicone oil VP 1120Phenyl Trimethicone22.7
Dow Corning
CONDEA ChemieIsocarb 12Butyl Octanoic acid22.1
Henkel CognisIsopropyl stearateIsopropyl Stearate21.9
WITCO,Finsolv TNC12-15 Alkyl Benzoate21.8
Goldschmidt
Dr. StraetmansDermofeel BGCButylene Glycol Caprylate/Caprate21.5
UnichemaMiglyol 812Caprylic/Capric Triglyceride21.3
Huels
Trivent (via S. Black)Trivent OCGTricaprylin20.2
ALZO (ROVI)Dermol 866PEG,, Diethylhexanoate/20.1
Diisononanoate/Ethylhexyl
Isononanoate
|
[0045] Of the hydrocarbons, paraffin oil, and further hydrogenated polyolefins, such as hydrogenated polyisobutenes, squalane and squalene, in particular, are to be used advantageously for the purposes of the present invention.
[0046] The cosmetic and/or dermatological preparations according to the invention can have the customary composition. For the purposes of the present invention, skincare preparations are particularly advantageous; they can be used for cosmetic and/or dermatological light protection, and also for the treatment of the skin and/or of the hair and as make-up products in decorative cosmetics. A further advantageous embodiment of the present invention consists in aftersun products.
[0047] Corresponding to their structure, cosmetic or topical dermatological compositions can be used, for the purposes of the present invention, for example as skin protection cream, day cream or night cream etc. It may be possible and advantageous to use the compositions according to the invention as a base for pharmaceutical formulations.
[0048] Just as emulsions of liquid and solid consistency are used as cleansing lotions or cleansing creams, the preparations according to the invention can also be “cleansing foams” which can be used, for example, for the removal of make-up or as a mild washing foam, possibly also for bad skin. Such cleansing foams can advantageously also be used as “rinse-off” preparations, which are rinsed from the skin following application.
[0049] The cosmetic and/or dermatological preparations according to the invention can also advantageously be in the form of a foam for care of the hair or of the scalp, in particular a foam for arranging the hair, a foam which is used when blow-drying the hair, a styling foam and treatment foam.
[0050] For use, the cosmetic and dermatological preparations according to the invention are applied to the skin and/or the hair in an adequate amount in the manner customary for cosmetics.
[0051] The cosmetic and dermatological preparations according to the invention can comprise cosmetic auxiliaries, as are customarily used in such preparations, e.g. preservatives, preservative assistants, bactericides, perfumes, dyes, pigments which have a coloring action, moisturizers and/or humectants, fillers which improve the feel on the skin, fats, oils, waxes or other customary constituents of a cosmetic or dermatological formulation, such as alcohols, polyols, polymers, foam stabilizers, electrolytes, organic solvents or silicone derivatives.
[0052] Advantageous preservatives for the purposes of the present invention are, for example, formaldehyde donors (such as, for example, DMDM hydantoin), iodopropylbutyl carbamate (e.g. those available under the trade names Koncyl-L, Koncyl-S and Konkaben LMB from Lonza), parabens, phenoxyethanol, ethanol, benzoic acid and the like. According to the invention, the preservative system usually also advantageously comprises preservative assistants, such as, for example, octoxyglycerol, glycine soybean etc.
[0053] Particularly advantageous preparations are also obtained if antioxidants are used as additives or active ingredients. According to the invention, the preparations advantageously comprise one or more antioxidants. Favorable, but nevertheless optional antioxidants which may be used are all antioxidants customary or suitable for cosmetic and/or dermatological applications.
[0054] The antioxidants are advantageously chosen from the group consisting of amino acids (e.g. glycine, histidine, tyrosine, tryptophan) and derivatives thereof, imidazoles (e.g. urocaninic acid) and derivatives thereof, peptides such as D,L-carnosine, D-carnosine, L-carnosine and derivatives thereof (e.g. anserine), carotenoids, carotenes (e.g. α-carotene, β-carotene, lycopene) and derivatives thereof, lipoic acid and derivatives thereof (e.g. dihydrolipoic acid), aurothioglucose, propylthiouracil and other thiols (e.g. thioredoxin, glutathione, cysteine, cystine, cystamine and the glycosyl, N-acetyl, methyl, ethyl, propyl, amyl, butyl and lauryl, palmitoyl, oleyl, γ-linoleyl, cholesteryl and glyceryl esters thereof) and salts thereof, dilauryl thiodipropionate, distearyl thiodipropionate, thiodipropionic acid and derivatives thereof (esters, ethers, peptides, lipids, nucleotides, nucleosides and salts) and sulfoximine compounds (e.g. buthionine sulfoximines, homocysteine sulfoximine, buthionine sulfones, penta-, hexa-, heptathionine sulfoximine) in very low tolerated doses (e.g. pmol to μmol/kg), and also (metal) chelating agents (e.g. α-hydroxy fatty acids, palmitic acid, phytic acid, lactoferrin), α-hydroxy acids (e.g. citric acid, lactic acid, malic acid), humic acid, bile acid, bile extracts, bilirubin, biliverdin, EDTA, EGTA and derivatives thereof, unsaturated fatty acids and derivatives thereof (e.g. γ-linolenic acid, linoleic acid, oleic acid), folic acid and derivatives thereof, ubiquinone and ubiquinol and derivatives thereof, vitamin C and derivatives (e.g. ascorbyl palmitate, Mg ascorbyl phosphate, ascorbyl acetate), tocopherols and derivatives (e.g. vitamin E acetate), vitamin A and derivatives (vitamin A palmitate) and coniferyl benzoate of benzoin resin, rutinic acid and derivatives thereof, ferulic acid and derivatives thereof, butylhydroxytoluene, butylhydroxyanisole, nordihydroguaiacic acid, nordihydroguaiaretic acid, trihydroxybutyrophenone, uric acid and derivatives thereof, mannose and derivatives thereof, zinc and derivatives thereof (e.g. ZnO, ZnSO4), selenium and derivatives thereof (e.g. selenomethionine), stilbenes and derivatives thereof (e.g. stilbene oxide, trans-stilbene oxide) and the derivatives (salts, esters, ethers, sugars, nucleotides, nucleosides, peptides and lipids) of these listed active ingredients which are suitable according to the invention.
[0055] For the purposes of the present invention, water-soluble antioxidants, such as, for example, vitamins, e.g. ascorbic acid and derivatives thereof, can be used particularly advantageously.
[0056] A surprising property of the preparations according to the invention is that they are very good vehicles for cosmetic or dermatological active ingredients into the skin, preferred active ingredients being antioxidants which can protect the skin against oxidative stress. Preferred antioxidants here are vitamin E and derivatives thereof, and vitamin A and derivatives thereof.
[0057] The amount of antioxidants (one or more compounds) in the preparations is preferably 0.001 to 30% by weight, particularly preferably 0.05 to 20% by weight, in particular 0.1 to 10% by weight, based on the total weight of the preparation.
[0058] If vitamin E and/or derivatives thereof are the antioxidant(s), it is advantageous to choose their respective concentrations from the range from 0.001 to 10% by weight, based on the total weight of the formulation.
[0059] If vitamin A or vitamin A derivatives, or carotenes or derivatives thereof are the antioxidant(s), it is advantageous to choose their respective concentrations from the range from 0.001 to 10% by weight, based on the total weight of the formulation.
[0060] The active ingredients (one or more compounds) can also very advantageously be chosen according to the invention from the group of lipophilic active ingredients, in particular from the following group:
[0061] acetylsalicylic acid, atropine, azulene, hydrocortisone and derivatives thereof, e.g. hydrocortisone-17 valerate, vitamins of the B and D series, very favorably vitamin B1, vitamin B12 and vitamin D1, but also bisabolol, unsaturated fatty acids, namely the essential fatty acids (often also called a vitamin F), in particular gamma-linolenic acid, oleic acid, eicosapentaenoic acid, docosahexaenoic acid and derivatives thereof, chloroamphenicol, caffeine, prostaglandins, thymol, camphor, extracts or other products of a vegetable and animal origin, e.g. evening primrose oil, borage oil or currant seed oil, fish oils, cod-liver oil and also ceramides and ceramide-like compounds, etc.
[0062] It is also advantageous to choose the active ingredients from the group of refatting substances, for example purcellin oil, Eucerit® and Neocerit®.
[0063] The active ingredient(s) is/are also particularly advantageously chosen from the group of NO synthase inhibitors, particularly if the preparations according to the invention are to be used for the treatment and prophylaxis of the symptoms of intrinsic and/or extrinsic skin aging and for the treatment and prophylaxis of the harmful effects of ultraviolet radiation on the skin.
[0064] A preferred NO synthase inhibitor is nitroarginine.
[0065] The active ingredient(s) is/are also advantageously chosen from the group which includes catechins and bile esters of catechins and aqueous or organic extracts from plants or parts of plants which have a content of catechins or bile esters of catechins, such as, for example, the leaves of the Theaceae plant family, in particular of the species Camellia sinensis (green tea). Particularly advantageous are typical ingredients thereof (such as e.g. polyphenols or catechins, caffeine, vitamins, sugar, minerals, amino acids, lipids).
[0066] Catechins are a group of compounds which are to be regarded as hydrogenated flavones or anthocyanidines and are derivatives of “catechin” (catechol, 3,3′,4′,5,7-flavanpentol, 2-(3,4-dihydroxyphenyl)chroman-3,5,7-triol). Epicatechin ((2R,3R)-3,3′,4′,5,7-flavanpentol) is also an advantageous active ingredient for the purposes of the present invention.
[0067] Also advantageous are plant extracts with a content of catechins, in particular extracts of green tea, such as e.g. extracts from leaves of plants of the species Camellia spec., very particularly the types of tea Camellia sinenis, C. assamica, C. taliensis and C. irrawadiensis and hybrids of these with, for example, Camellia japonica.
[0068] Preferred active ingredients are also polyphenols or catechins from the group (−)-catechin, (+)-catechin, (−)-catechin gallate, (−)-gallocatechin gallate, (+)-epicatechin, (−)-epicatechin, (−)-epicatechin gallate, (−)-epigallocatechin and (−)-epigallocatechin gallate.
[0069] Flavone and its derivatives (also often collectively called “flavones”) are also advantageous active ingredients for the purposes of the present invention. They are characterized by the following basic structure (substitution positions are shown):
1
[0070] Some of the more important flavones which can also preferably be used in preparations according to the invention are given in the table below:
4|
|
OH substitution positions
35782′3′4′5′
|
Flavone−−−−−−−−
Flavonol+−−−−−−−
Chrysin−++−−−−−
Galangin+++−−−−−
Apigenin−++−−−+−
Fisetin+−+−−++−
Luteolin−++−−++−
Kaempferol+++−−−+−
Quercetin+++−−++−
Morin+++−+−+−
Robinetin+−+−−+++
Gossypetin++++−++−
Myricetin+++−−+++
|
[0071] In nature, flavones are usually in glycosylated form.
[0072] According to the invention, the flavonoids are preferably chosen from the group of substances of the generic structural formula
2
[0073] where Z1 to Z7, independently of one another, are chosen from the group consisting of H, OH, alkoxy and hydroxyalkoxy, where the alkoxy and hydroxyalkoxy groups can be branched or unbranched and have 1 to 18 carbon atoms, and where Gly is chosen from the group of mono- and oligoglycoside radicals.
[0074] According to the invention, the flavonoids can however, also advantageously be chosen from the group of substances of the generic structural formula
3
[0075] where Z1 to Z6, independently of one another, are chosen from the group consisting of H, OH, alkoxy and hydroxyalkoxy, where the alkoxy and hydroxyalkoxy groups can be branched or unbranched and have 1 to 18 carbon atoms, and where Gly is chosen from the group of mono and oligoglycoside radicals.
[0076] Preferably, such structures can be chosen from the group of substances of the generic structural formula
4
[0077] where Gly1, Gly2 and Gly3, independently of one another, are monoglycoside radicals. Gly2 and Gly3 can also, individually or together, represent saturations by hydrogen atoms.
[0078] Preferably, Gly1, Gly2 and Gly3, independently of one another, are chosen from the group of hexosyl radicals, in particular of rhamnosyl radicals and glucosyl radicals. However, other hexosyl radicals, for example allosyl, altrosyl, galactosyl, gulosyl, idosyl, mannosyl and talosyl, can also be used advantageously in some circumstances. It may also be advantageous according to the invention to use pentosyl radicals.
[0079] Z1 to Z5 are, independently of one another, advantageously chosen from the group consisting of H, OH, methoxy, ethoxy and 2-hydroxyethoxy, and the flavone glycosides have the structure
5
[0080] The flavone glycosides according to the invention are particularly advantageously chosen from the group given by the following structure:
6
[0081] where Gly1, Gly2 and Gly3, independently of one another, are monoglycoside radicals. Gly2 and Gly3 can also, individually or together, represent saturations by hydrogen atoms.
[0082] Preferably, Gly1, Gly2 and Gly3, independently of one another, are chosen from the group of hexosyl radicals, in particular of rhamnosyl radicals and glucosyl radicals. However, other hexosyl radicals, for example allosyl, altrosyl, galactosyl, gulosyl, idosyl, mannosyl and talosyl, can also advantageously be used in some circumstances. It may also be advantageous according to the invention to use pentosyl radicals.
[0083] For the purposes of the present invention, it is particularly advantageous to choose the flavone glucoside(s) from the group consisting of α-glucosylrutin, α-glucosylmyricetin, α-glucosylisoquercitrin, α-glucosylisoquercetin and α-glucosylquercitrin.
[0084] Particular preference is given, according to the invention, to α-glucosylrutin.
[0085] Also advantageous according to the invention are naringin (aurantin, naringenin-7-rhamno-glucoside), hesperidin (3′,5,7-trihydroxy-4′-methoxyflavanone-7-rutinoside, hesperidoside, hesperetin-7-O-rutinoside), rutin (3,3′,4′,5,7-pentahydroxyflavone-3-rutinoside, quercetin-3-rutinoside, sophorin, birutan, rutabion, taurutin, phytomelin, melin), troxerutin (3,5-dihydroxy-3′,4′,7-tris(2-hydroxyethoxy)flavone-3-(6-O-(6-deoxy-α-L-mannopyranosyl)-β-D-glucopyranoside)), monoxerutin (3,3′,4′,5-tetrahydroxy-7-(2-hydroxyethoxy)flavone-3-(6-O-(6-deoxy-α-L-mannopyranosyl)-β-D-glucopyranoside)), dihydrorobinetin (3,3′,4′,5′,7-pentahydroxyflavanone), taxifolin (3,3′,4′,5,7-pentahydroxyflavanone), eriodictyol-7-glucoside (3′,4′,5,7-tetrahydroxyflavanone-7 glucoside), flavanomarein (3′,4′,7,8-tetrahydroxyflavanone-7 glucoside) and isoquercetin (3,3′,4′,5,7-pentahydroxyflavanone-3-(β-D-glucopyranoside). It is also advantageous to choose the active ingredient(s) from the group of ubiquinones and plastoquinones.
[0086] Ubiquinones are distinguished by the structural formula
7
[0087] and are the most widespread and thus the most investigated bioquinones. Ubiquinones are referred to depending on the number of isoprene units linked in the side chain as Q-1, Q-2, Q-3 etc., or depending on the number of carbon atoms, as U-5, U-10, U-15 etc. They preferably appear with certain chain lengths, e.g. in some microorganisms and yeasts where n=6. In most mammals including man, Q10 predominates.
[0088] Coenzyme Q10 is particularly advantageous and is characterized by the following structural formula:
8
[0089] Plastoquinones have the general structural formula
9
[0090] Plastoquinones differ in the number n of isoprene radicals and are referred to accordingly, e.g. PQ-9 (n=9). In addition, other plastoquinones with varying substituents on the quinone ring exist.
[0091] Creatine and/or creatine derivatives are preferred active ingredients for the purposes of the present invention. Creatine is characterized by the following structure:
10
[0092] Preferred derivatives are creatine phosphate and creatine sulfate, creatine acetate, creatine ascorbate and the derivatives esterified at the carboxyl group with mono- or polyfunctional alcohols.
[0093] A further advantageous active ingredient is L-carnitine [3-hydroxy-4-(trimethylammonio)butyrobetaine]. Acylcarnitine chosen from the group of substances of the following general structural formula
11
[0094] where R is chosen from the group of branched and unbranched alkyl radicals having up to 10 carbon atoms, are advantageous active ingredients for the purposes of the present invention. Preference is given to propionylcarnitine and, in particular, acetylcarnitine. Both enantiomers (D and L form) are to be used advantageously for the purposes of the present invention. It may also be advantageous to use any enantiomer mixtures, for example a racemate of D and L form.
[0095] Further advantageous active ingredients are sericoside, pyridoxol, vitamin K, biotin and aroma substances.
[0096] The list of said active ingredients and active ingredient combinations which can be used in the preparations according to the invention is, of course, not intended to be limiting. The active ingredients can be used individually or in any combinations with one another.
[0097] Skin aging is caused e.g. by endogenous, genetically determined factors. As a result of aging, the epidermis and dermis experience e.g. the following structural damage and functional disorders, which can also be covered by the term “senile xerosis”:
[0098] a) dryness, roughness and formation of (dryness) wrinkles,
[0099] b) itching and
[0100] c) reduced refatting by sebaceous glands (e.g. after washing).
[0101] Exogenous factors, such as UV light and chemical noxae, can have a cumulative effect and, for example, accelerate or add to the endogenous aging processes. The epidermis and dermis experience, in particular as a result of exogenous factors, e.g. the following structural damage and functional disorders in the skin, which go beyond the degree and quality of the damage in the case of chronological aging:
[0102] d) visible vascular dilations (telangiectases, cuperosis);
[0103] e) flaccidity and formation of wrinkles;
[0104] f) local hyperpigmentation, hypopigmentation and abnormal pigmentation (e.g. age spots) and
[0105] g) increased susceptibility to mechanical stress (e.g. cracking).
[0106] Surprisingly, selected formulations according to the invention can also have an antiwrinkle action or considerably increase the action of known antiwrinkle active ingredients. Accordingly, for the purposes of the invention, formulations are particularly advantageously suitable for the prophylaxis and treatment of cosmetic or dermatological skin changes, as arise, for example, during skin aging. They are also advantageously suitable for combating the development of dry or rough skin.
[0107] In a particular embodiment, the present invention thus relates to products for the care of skin aged in a natural manner, and for the treatment of the secondary damage of light aging, in particular the phenomena listed under a) to g).
[0108] The water phase of the preparations according to the invention can advantageously comprise customary cosmetic auxiliaries, such as, for example, alcohols, in particular those of low carbon number, preferably ethanol and/or isopropanol, diols or polyols of low carbon number, and ethers thereof, preferably propylene glycol, glycerol, ethylene glycol, ethylene glycol monoethyl or monobutyl ether, propylene glycol monomethyl, monoethyl or monobutyl ether, diethyleneglycol monomethyl or monoethyl ether and analogous products, polymers, foam stabilizers, electrolytes and moisturizers.
[0109] Moisturizers is the term used to describe substances or mixtures of substances which, following application or distribution on the surface of the skin, confer on cosmetic or dermatological preparations the property of reducing the moisture loss by the horny layer (also called transepidermal water loss (TEWL)) and/or have a beneficial effect on the hydration of the horny layer.
[0110] Advantageous moisturizers for the purposes of the present invention are, for example, glycerol, lactic acid, pyrrolidonecarboxylic acid and urea. In addition, it is particularly advantageous to use polymeric moisturizers from the group of polysaccharides which are soluble in water and/or swellable in water and/or gellable using water. Particularly advantageous are, for example, hyaluronic acid, chitosan and/or a fucose-rich polysaccharide which is listed in Chemical Abstracts under the registry number 178463-23-5 and is available, for example, under the name Fucogel®1000 from SOLABIA S.A.
[0111] The cosmetic and dermatological preparations according to the invention can comprise dyes and/or color pigments, particularly when they are in the form of decorative cosmetics. The dyes and color pigments can be chosen from the corresponding positive list of the Cosmetics Directive or the EC list of cosmetic colorants. In most cases they are identical to the dyes approved for foods. Advantageous color pigments are, for example, titanium dioxide, mica, iron oxides (e.g. Fe2O3, Fe3O4, FeO(OH)) and/or tin oxide. Advantageous dyes are, for example, carmine, Berlin blue, chrome oxide green, ultramarine blue and/or manganese violet. It is particularly advantageous to choose the dyes and/or color pigments from the following list. The Colour Index Numbers (CIN) are taken from the Rowe Colour Index, 3rd Edition, Society of Dyers and Colourists, Bradford, England, 1971.
5|
|
Chemical or other nameCINColor
|
Pigment Green10006green
Acid Green 110020green
2,4-Dinitrohydroxynaphthalene-7-sulfonic acid10316yellow
Pigment Yellow 111680yellow
Pigment Yellow 311710yellow
Pigment Orange 111725orange
2,4-Dihydroxyazobenzene11920orange
Solvent Red 312010red
1-(2′-Chloro-4′-nitro-1′-phenylazo)-2-hydroxynaphthalene12085red
Pigment Red 312120red
Ceres red; Sudan red; Fat Red G12150red
Pigment Red 11212370red
Pigment Red 712420red
Pigment Brown 112480brown
4-(2′-Methoxy-5′-sulfodiethylamido-1′-phenylazo)-3-hydroxy-5″-12490red
chloro-2″,4″-dimethoxy-2-naphthanilide
Disperse Yellow 1612700yellow
1-(4-Sulfo-1-phenylazo)-4-aminobenzene-5-sulfonic acid13015yellow
2,4-Dihydroxyazobenzene-4′-sulfonic acid14270orange
2-(2,4-Dimethylphenylazo-5-sulfo)-1-hydroxynaphthalene-4-sulfonic14700red
acid
2-(4-Sulfo-1-naphthylazo)-1-naphthol-4-sulfonic acid14720red
2-(6-Sulfo-2,4-xylylazo)-1-naphthol-5-sulfonic acid14815red
1-(4′-Sulfophenylazo)-2-hydroxynaphthalene15510orange
1-(2-Sulfo-4-chloro-5-carboxy-1-phenylazo)-2-hydroxynaphthalene15525red
1-(3-Methylphenylazo-4-sulfo)-2-hydroxynaphthalene15580red
1-(4′,(8′)-Sulfonaphthylazo)-2-hydroxynaphthalene15620red
2-Hydroxy-1,2′-azonaphthalene-1′-sulfonic acid15630red
3-Hydroxy-4-phenylazo-2-naphthylcarboxylic acid15800red
1-(2-Sulfo-4-methyl-1-phenylazo)-2-naphthylcarboxylic acid15850red
1-(2-Sulfo-4-methyl-5-chloro-1-phenylazo)-2-hydroxynaphthalene-15865red
3-carboxylic acid
1-(2-Sulfo-1-naphthylazo)-2-hydroxynaphthalene-3-carboxylic acid15880red
1-(3-Sulfo-1-phenylazo)-2-naphthol-6-sulfonic acid15980orange
1-(4-Sulfo-1-phenylazo)-2-naphthol-6-sulfonic acid15985yellow
Allura Red16035red
1-(4-Sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonic acid16185red
Acid Orange 1016230orange
1-(4-Sulfo-1-naphthylazo)-2-naphthol-6,8-disulfonic acid16255red
1-(4-Sulfo-1-naphthylazo)-2-naphthol-3,6,8-trisulfonic acid16290red
8-Amino-2-phenylazo-1-naphthol-3,6-disulfonic acid17200red
Acid Red 118050red
Acid Red 15518130red
Acid Yellow 12118690yellow
Acid Red 18018736red
Acid Yellow 1118820yellow
Acid Yellow 1718965yellow
4-(4-Sulfo-1-phenylazo)-1 (4-sulfophenyl)-5-hydroxy-19140yellow
pyrazolone-3-carboxylic acid
Pigment Yellow 1620040yellow
2,6-(4′-Sulfo-2″,4″-dimethyl)bisphenylazo)-1,3-dihydroxybenzene20170orange
Acid Black 120470black
Pigment Yellow 1321100yellow
Pigment Yellow 8321108yellow
Solvent Yellow21230yellow
Acid Red 16324790red
Acid Red 7327290red
2-[4′-(4″-Sulfo-1″-phenylazo)-7′-sulfo-1′-naphthylazo]-1-hydroxy-27755black
7-aminonaphthalene-3,6-disulfonic acid
4′-[(4″-Sulfo-1″-phenylazo)-7′-sulfo-1′-naphthylazo]-1-hydroxy-28440black
8-acetylaminonaphthalene-3,5-disulfonic acid
Direct Orange 34, 39, 44, 46, 6040215orange
Food Yellow40800orange
trans-β-Apo-8′-carotinaldehyde (C30)40820orange
trans-Apo-8′-carotinic acid (C30)-ethyl ester40825orange
Canthaxanthin40850orange
Acid Blue 142045blue
2,4-Disulfo-5-hydroxy-4′-4″-bis(diethylamino)triphenylcarbinol42051blue
4-[(4-N-Ethyl-p-sulfobenzylamino)phenyl(4-hydroxy-42053green
2-sulfophenyl)(methylene)-1-(N-ethyl-N-p-sulfobenzyl)-
2,5-cyclohexadienimine]
Acid Blue 742080blue
(N-Ethyl-p-sulfobenzylamino)phenyl(2-sulfophenyl)methylene-42090blue
(N-ethyl-N-p-sulfobenzyl)Δ2,5-cyclohexadienimine
Acid Green 942100green
Diethyldisulfobenzyl-di-4-amino-2-chloro-di-2-methyl-42170green
fuchsonimmonium
Basic Violet 1442510violet
Basic Violet 242520violet
2′-Methyl-4′-(N-ethyl-N-m-sulfobenzyl)amino-4″-(N-diethyl)amino-42735blue
2-methyl-N-ethyl-N-m-sulfobenzylfuchsonimmonium
4′-(N-Dimethyl)amino-4″-(N-phenyl)aminonaphtho-N-dimethyl-44045blue
fuchsonimmonium
2-Hydroxy-3,6-disulfo-4,4′-bisdimethylaminonaphtho-44090green
fuchsonimmonium
Acid Red 5245100red
3-(2′-Methylphenylamino)-6-(2′-methyl-4′-sulfophenylamino)-45190violet
9-(2″-carboxyphenyl)xanthenium salt
Acid Red 5045220red
Phenyl-2-oxyfluorone-2-carboxylic acid45350yellow
4,5-Dibromofluorescein45370orange
2,4,5,7-Tetrabromofluorescein45380red
Solvent Dye45396orange
Acid Red 9845405red
3′,4′,5′,6′-Tetrachloro-2,4,5,7-tetrabromofluorescein45410red
4,5-Diiodofluorescein45425red
2,4,5,7-Tetraiodofluorescein45430red
Quinophthalone47000yellow
Quinophthalonedisulfonic acid47005yellow
Acid Violet 5050325violet
Acid Black 250420black
Pigment Violet 2351319violet
1,2-Dioxyanthraquinone, calcium-aluminum complex58000red
3-Oxypyrene-5,8,10-sulfonic acid59040green
1-Hydroxy-4-N-phenylaminoanthraquinone60724violet
1-Hydroxy-4-(4′-methylphenylamino)anthraquinone60725violet
Acid Violet 2360730violet
1,4-Di(4′-methylphenylamino)anthraquinone61565green
1,4-Bis(o-sulfo-p-toluidino)anthraquinone61570green
Acid Blue 8061585blue
Acid Blue 6262045blue
N,N′-Dihydro-1,2,1′,2′-anthraquinone azine69800blue
Vat Blue 6; Pigment Blue 6469825blue
Vat Orange 771105orange
Indigo73000blue
Indigo-disulfonic acid73015blue
4,4′-Dimethyl-6,6′-dichlorothioindigo73360red
5,5′-Dichloro-7,7′-dimethylthioindigo73385violet
Quinacridone Violet 1973900violet
Pigment Red 12273915red
Pigment Blue 1674100blue
Phthalocyanine74160blue
Direct Blue 8674180blue
Chlorinated phthalocyanine74260green
Natural Yellow 6,19; Natural Red 175100yellow
Bixin, Norbixin75120orange
Lycopene75125yellow
trans-alpha-, beta- and gamma-carotene75130orange
Keto- and/or hydroxyl derivates of carotene75135yellow
Guanine or pearlescent agent75170white
1,7-Bis(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione75300yellow
Complex salt (Na, Al, Ca) of carminic acid75470red
Chlorophyll a and b; copper compounds of chlorophylls and75810green
chlorophyllins
Aluminum77000white
Hydrated alumina77002white
Hydrous aluminum silicates77004white
Ultramarine77007blue
Pigment Red 101 and 10277015red
Barium sulfate77120white
Bismuth oxychloride and its mixtures with mica77163white
Calcium carbonate77220white
Calcium sulfate77231white
Carbon77266black
Pigment black 977267black
Carbo medicinalis vegetabilis77268:1black
Chromium oxide77288green
Chromium oxide, hydrous77289green
Pigment Blue 28, Pigment Green 1477346green
Pigment Metal 277400brown
Gold77480brown
Iron oxides and hydroxides77489orange
Iron oxide77491red
Hydrated iron oxide77492yellow
Iron oxide77499black
Mixtures of iron (II) and iron (III) hexacyanoferrate77510blue
Pigment White 1877713white
Manganese ammonium diphosphate77742violet
Manganese phosphate; Mn3(PO4)2 · 7 H2O77745red
Silver77820white
Titanium dioxide and its mixtures with mica77891white
Zinc oxide77947white
6,7-Dimethyl-9-(1′-D-ribityl)isoalloxazine, lactoflavineyellow
Sugar coloringbrown
Capsanthin, capsorubinorange
Betaninred
Benzopyrylium salts, anthocyansred
Aluminum, zinc, magnesium and calcium stearatewhite
Bromothymol blueblue
Bromocresol greengreen
Acid Red 195red
|
[0112] If the formulations according to the invention are in the form of products, which are intended for use in the facial area, it is favorable to choose one or more substances from the following group as the dye: 2,4-dihydroxyazobenzene, 1-(2′-chloro-4′-nitro-1′-phenylazo)-2-hydroxynaphthalene, Ceres Red, 2-(4-sulfo-1-naphthylazo)-1-naphthol-4-sulfonic acid, calcium salt of 2-hydroxy-1,2′-azonaphthalene-1′-sulfonic acid, calcium and barium salts of 1-(2-sulfo-4-methyl-1-phenylazo)-2-naphthylcarboxylic acid, calcium salt of 1-(2-sulfo-1-naphthylazo)-2-hydroxynaphthalene-3-carboxylic acid, aluminum salt of 1-(4-sulfo-1-phenylazo)-2-naphthol-6-sulfonic acid, aluminum salt of 1-(4-sulfo-1-naphthylazo)-2-naphthol-3,6-disulfonic acid, 1-(4-sulfo-1-naphthylazo)-2-naphthol-6,8-disulfonic acid, aluminum salt of 4-(4-sulfo-1-phenylazo)-1-(4-sulfophenyl)-5-hydroxypyrazolone-3-carboxylic acid, aluminum and zirconium salts of 4,5-dibromofluorescein, aluminum and zirconium salts of 2,4,5,7-tetrabromofluorescein, 3′,4′,5′,6′-tetrachloro-2,4,5,7-tetrabromofluorescein and its aluminum salt, aluminum salt of 2,4,5,7-tetraiodofluorescein, aluminum salt of quinophthalone disulfonic acid, aluminum salt of indigo disulfonic acid, red and black iron oxide (CIN: 77 491 (red) and 77 499 (black)), iron oxide hydrate (CIN: 77 492), manganese ammonium diphosphate and titanium dioxide.
[0113] Also advantageous are oil-soluble natural dyes, such as, for example, paprika extracts, β-carotene or cochenille.
[0114] Also advantageous for the purposes of the present invention are formulations with a content of pearlescent pigments. Preference is given in particular to the types of pearlescent pigments listed below:
[0115] 1. Natural pearlescent pigments, such as, for example
[0116] “pearl essence” (guanine/hypoxanthin mixed crystals from fish scales) and
[0117] “mother of pearl” (ground mussel shells)
[0118] 2. Monocrystalline pearlescent pigments, such as, for example, bismuth oxychloride (BiOCl)
[0119] 3. Layer-substrate pigments: e.g. mica/metal oxide
[0120] Bases for pearlescent pigments are, for example, pulverulent pigments or castor oil dispersions of bismuth oxychloride and/or titanium dioxide, and bismuth oxychloride and/or titanium dioxide on mica. The luster pigment listed under CIN 77163, for example, is particularly advantageous.
[0121] Also advantageous are, for example, the following types of pearlescent pigment based on mica/metal oxide:
6|
|
GroupCoating/layer thicknessColor
|
Silver-white pearlescentTiO2:40-60 nmSilver
pigments
Interference pigmentsTiO2:60-80 nmYellow
TiO2:80-100 nmRed
TiO2:100-140 nmBlue
TiO2:120-160 nmGreen
Color luster pigmentsFe2O3Bronze
Fe2O3Copper
Fe2O3Red
Fe2O3Red-violet
Fe2O3Red-green
Fe2O3Black
Combination pigmentsTiO2/Fe2O3Gold shades
TiO2/Cr2O3Green
TiO2/Berlin blueDeep blue
TiO2/carmineRed
|
[0122] Particular preference is given, for example, to the pearlescent pigments obtainable from Merck under the trade names Timiron, Colorona or Dichrona.
[0123] The list of given pearlescent pigments is not of course intended to be limiting. Pearlescent pigments which are advantageous for the purposes of the present invention are obtainable by numerous methods known per se. For example, other substrates apart from mica can be coated with further metal oxides, such as, for example, silica and the like. SiO2 particles coated with, for example, TiO2 and Fe2O3 (“ronaspheres”), which are marketed by Merck and are particularly suitable for the optical reduction of fine lines.
[0124] It can moreover be advantageous to dispense completely with a substrate such as mica. Particular preference is given to iron pearlescent pigments prepared without the use of mica. Such pigments are obtainable, for example, under the trade name Sicopearl Kupfer 1000 from BASF.
[0125] In addition, also particularly advantageous are effect pigments which are obtainable under the trade name Metasome Standard/Glitter in various colors (yellow, red, green, blue) from Flora Tech. The glitter particles are present here in mixtures with various auxiliaries and dyes (such as, for example, the dyes with the Colour Index (CI) Numbers 19140, 77007, 77289, 77491).
[0126] The dyes and pigments may be present either individually or in a mixture, and can be mutually coated with one another, different coating thicknesses generally giving rise to different color effects. The total amount of dyes and color-imparting pigments is advantageously chosen from the range from e.g. 0.1% by weight to 30% by weight, preferably from 0.5 to 15% by weight, in particular from 1.0 to 10% by weight, in each case based on the total weight of the preparations.
[0127] For the purposes of the present invention, it is also advantageous to provide cosmetic and dermatological preparations whose main purpose is not protection against sunlight, but which nevertheless have a content of UV protection substances. Thus, for example, UV-A and/or UV-B filter substances are usually incorporated into day creams or make-up products. UV protection substances, like antioxidants, and, if desired, preservatives, also constitute effective protection of the preparations themselves against spoilage. Also favorable are cosmetic and dermatological preparations in the form of a sunscreen.
[0128] Accordingly, for the purposes of the present invention, as well as comprising one or more UV filter substances according to the invention, the preparations additionally comprise at least one further UV-A and/or UV-B filter substance. The formulations may, although not necessarily, optionally also comprise one or more organic and/or inorganic pigments as UV filter substances which may be present in the water and/or oil phase.
[0129] Preferred inorganic pigments are metal oxides and/or other metal compounds which are insoluble or virtually insoluble in water, in particular oxides of titanium (TiO2), zinc (ZnO), iron (e.g. Fe2O3), zirconium (ZrO2), silicon (SiO2), manganese (e.g. MnO), aluminum (Al2O3), cerium (e.g. Ce2O3), mixed oxides of the corresponding metals and mixtures of such oxides.
[0130] For the purposes of the present invention, such pigments may advantageously be surface-treated (“coated”), the intention being to form or retain, for example, an amphiphilic or hydrophobic character. This surface treatment can consist in providing the pigments with a thin hydrophobic layer by processes known per se.
[0131] Advantageous according to the invention are e.g. titanium dioxide pigments which have been coated with octylsilanol. Suitable titanium dioxide particles are available under the trade name T805 from Degussa. Also particularly advantageous are TiO2 pigments coated with aluminum stearate, e.g. those available under the trade name MT 100 T from TAYCA.
[0132] A further advantageous coating of the inorganic pigments consists of dimethylpolysiloxane (also: dimethicone), a mixture of completely methylated, linear siloxane polymers which have been terminally blocked with trimethylsiloxy units. Particularly advantageous for the purposes of the present invention are zinc oxide pigments which have been coated in this way.
[0133] Also advantageous is a coating of the inorganic pigments with a mixture of dimethylpolysiloxane, in particular dimethylpolysiloxane having an average chain length of from 200 to 350 dimethylsiloxane units, and silica gel, which is also referred to as simethicone. In particular, it is advantageous for the inorganic pigments to be additionally coated with aluminum hydroxide or aluminum oxide hydrate (also: alumina, CAS No.: 1333-84-2). Particularly advantageous are titanium dioxides which have been coated with simethicone and alumina, it also being possible for the coating to comprise water. An example thereof is the titanium dioxide available under the trade name Eusolex T2000 from Merck.
[0134] An advantageous organic pigment for the purposes of the present invention is 2,2′-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol) [INCI: bisoctyltriazole], which is characterized by the chemical structural formula
12
[0135] and is available under the trade name Tinosorb® M from CIBA-Chemikalien GmbH.
[0136] Preparations according to the invention advantageously comprise substances which absorb UV radiation in the UV-A and/or UV-B range, the total amount of filter substances being, for example, from 0.1% by weight to 30% by weight, preferably from 0.5 to 20% by weight, in particular from 1.0 to 15% by weight, based on the total weight of the preparations, in order to provide cosmetic preparations which protect the hair and the skin from the entire range of ultraviolet radiation. They can also be used as sunscreens for the hair or the skin.
[0137] Advantageous UV-A filter substances for the purposes of the present invention are dibenzoylmethane derivatives, in particular 4-(tert-butyl)-4′-methoxydibenzoylmethane (CAS No. 70356-09-1), which is sold by Givaudan under the name Parsol® 1789 and by Merck under the trade name Eusolex® 9020.
[0138] Further advantageous UV-A filter substances are phenylene-1,4-bis(2-benzimidazyl)-3,3′-5,5′-tetrasulfonic acid:
13
[0139] and its salts, particularly the corresponding sodium, potassium or triethanolammonium salts, in particular phenylene-1,4-bis(2-benzimidazyl)-3,3′-5,5′-tetrasulfonic bis-sodium salt:
14
[0140] with the INCI name Bisimidazylate, which is available, for example, under the trade name Neo Heliopan AP from Haarmann & Reimer.
[0141] Also advantageous are 1,4-di(2-oxo-10-sulfo-3-bornylidenemethyl)benzene and salts thereof (in particular the corresponding 10-sulfato compounds, in particular the corresponding sodium, potassium or triethanolammonium salt), which is also referred to as benzene-1,4-di(2-oxo-3-bornylidenemethyl-10-sulfonic acid) and is characterized by the following structure:
15
[0142] Advantageous UV filter substances for the purposes of the present invention are also broad-band filters, i.e. filter substances which absorb both UV-A and also UV-B radiation.
[0143] Advantageous broad-band filters or UV-B filter substances are, for example, bisresorcinyltriazine derivatives having the following structure:
16
[0144] where R1, R2 and R3 independently of one another are chosen from the group of branched and unbranched alkyl groups having 1 to 10 carbon atoms, or are a single hydrogen atom. Particular preference is given to 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine (INCI: An iso Triazine), which is available under the trade name Tinosorb® S from CIBA-Chemikalien GmbH.
[0145] For the purposes of the present invention, particularly advantageous preparations which are characterized by high or very high UV-A protection preferably comprise two or more UV-A and/or broadband filters, in particular dibenzoylmethane derivatives [for example 4-(tert-butyl)-4′-methoxydibenzoylmethane], benzotriazole derivatives [for example 2,2′-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol)], phenylene-1,4-bis(2-benzimidazyl)-3,3′-5,5′-tetrasulfonic acid and/or its salts, 1,4-di(2-oxo-10-sulfo-3-bornylidenemethyl)benzene and/or salts thereof and/or 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, in each case individually or in any combinations with one another.
[0146] Other UV filter substances, which have the structural formula
17
[0147] are also advantageous UV filter substances for the purposes of the present invention, for example the s-triazine derivatives described in european laid-open specification EP 570 838 A1, whose chemical structure is expressed by the generic formula
18
[0148] where
[0149] R is a branched or unbranched C1-C18-alkyl radical, a C5-C12-cycloalkyl radical, optionally substituted with one or more C1-C4-alkyl groups,
[0150] X is an oxygen atom or an NH group,
[0151] R1 is a branched or unbranched C1-C18-alkyl radical, a C5-C12-cycloalkyl radical, optionally substituted by one or more C1-C4-alkyl groups, or a hydrogen atom, an alkali metal atom, an ammonium group or a group of the formula
19
[0152] in which
[0153] A is a branched or unbranched C1-C18-alkyl radical, a C5-C12-cycloalkyl or aryl radical, optionally substituted by one or more C1-C4-alkyl groups,
[0154] R3 is a hydrogen atom or a methyl group,
[0155] n is a number from 1 to 10,
[0156] R2 is a branched or unbranched C1-C18-alkyl radical, a C5-C12-cycloalkyl radical, optionally substituted by one or more C1-C4-alkyl groups, when X is the NH group, and
[0157] a branched or unbranched C1-C18-alkyl radical, a C5-C12-cycloalkyl radical, optionally substituted by one or more C1-C4-alkyl groups, or a hydrogen atom, an alkali metal atom, an ammonium group or a group of the formula
20
[0158] in which
[0159] A is a branched or unbranched C1-C18-alkyl radical, a C5-C12-cycloalkyl or aryl radical, optionally substituted by one or more C1-C4-alkyl groups,
[0160] R3 is a hydrogen atom or a methyl group,
[0161] n is a number from 1 to 10,
[0162] when X is an oxygen atom.
[0163] A particularly preferred UV filter substance for the purposes of the present invention is also an unsymmetrically substituted s-triazine, the chemical structure of which is expressed by the formula
21
[0164] and which is also referred to below as dioctylbutylamidotriazone, (INCI) and is available under the trade name UVASORB HEB from Sigma 3V.
[0165] Also advantageous for the purposes of the present invention is a symmetrically substituted s-triazine, tris(2-ethylhexyl) 4,4′,4″-(1,3,5-triazine-2,4,6-triyltriimino)trisbenzoate, synonym: 2,4,6-tris[anilino-(p-carbo-2′-ethyl-1′-hexyloxy)]-1,3,5-triazine (INCI: Octyl Triazone), which is marketed by BASF Aktiengesellschaft under the trade name UVINUL® T 150.
[0166] European laid-open specification 775 698 also describes preferred bisresorcinyltriazine derivatives, the chemical structure of which is expressed by the generic formula
22
[0167] where R1, R2 and A1 represent very different organic radicals.
[0168] Also advantageous for the purposes of the present invention are 2,4-bis{[4-(3-sulfonato)-2-hydroxypropyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine sodium salt, 2,4-bis{[4-(3-(2-propyloxy)-2-hydroxypropyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-[4-(2-methoxyethylcarboxyl)phenylamino]-1,3,5-triazine, 2,4-bis{[4-(3-(2-propyloxy)-2-hydroxypropyloxy)-2-hydroxy]phenyl}-6-[4-(2-ethylcarboxyl)phenylamino]-1,3,5-triazine, 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]phenyl}-6-(1-methylpyrrol-2-yl)-1,3,5-triazine bis{[4-tris(trimethylsiloxysilylpropyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4-bis{[4-(2″-methylpropenyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine and 2,4-bis{[4-(1′,1′,1′,3′,5′,5′,5′-heptamethylsiloxy-2″-methylpropyloxy)-2-hydroxy]phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine.
[0169] An advantageous broad-band filter for the purposes of the present invention is 2,2′-methylenebis(6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol), which is characterized by the chemical structural formula
23
[0170] and is available under the trade name Tinosorb® M from CIBA-Chemikalien GmbH.
[0171] Another advantageous broad-band filter for the purposes of the present invention is 2-(2H-benzotriazol-2-yl)-4-methyl-6-[2-methyl-3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]disiloxanyl]propyl]phenol (CAS No.: 155633-54-8) having the INCI name Drometrizole Trisiloxane, which is characterized by the chemical structural formula
24
[0172] The UV-B and/or broad-band filters can be oil-soluble or water-soluble. Examples of advantageous oil-soluble UV-B and/or broad-band filter substances are:
[0173] 3-benzylidenecamphor derivatives, preferably 3-(4-methylbenzylidene)camphor, 3-benzylidenecamphor;
[0174] 4-aminobenzoic acid derivatives, preferably 2-ethylhexyl 4-(dimethylamino)benzoate, amyl 4-(dimethylamino)benzoate;
[0175] 2,4,6-trianilino(p-carbo-2′-ethyl-1′-hexyloxy)-1,3,5-triazine;
[0176] esters of benzalmalonic acid, preferably di(2-ethylhexyl) 4-methoxybenzalmalonate,
[0177] esters of cinnamic acid, preferably 2-ethylhexyl 4-methoxycinnamate, isopentyl 4-methoxycinnamate;
[0178] derivates of benzophenone, preferably 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4′-methylbenzophenone, 2,2′-dihydroxy-4-methoxybenzophenone
[0179] and UV filters bonded to polymers.
[0180] Examples of advantageous water-soluble UV-B and/or broad-band filter substances are:
[0181] salts of 2-phenylbenzimidazole-5-sulfonic acid, such as its sodium, potassium or its triethanolammonium salt, and also the sulfonic acid itself;
[0182] sulfonic acid derivatives of 3-benzylidenecamphor, such as, for example, 4-(2-oxo-3-bornylidenemethyl)benzenesulfonic acid, 2-methyl-5-(2-oxo-3-bornylidenemethyl)sulfonic acid and salts thereof.
[0183] A further light protection filter substance which can be used advantageously according to the invention is ethylhexyl 2-cyano-3,3-diphenylacrylate (octocrylene), which is available from BASF under the name Uvinul® N 539 and is characterized by the following structure:
25
[0184] It can also be of considerable advantage to use polymer-bonded or polymeric UV filter substances in the preparations according to the present invention, in particular those described in WO-A-92/20690.
[0185] In some instances, it can also be advantageous to incorporate further UV-A and/or UV-B filters in accordance with the invention into cosmetic or dermatological preparations, for example certain salicylic acid derivatives, such as 4-isopropylbenzyl salicylate, 2-ethylhexyl salicylate (=octyl salicylate), homomenthyl salicylate.
[0186] The list of given UV filters which can be used for the purposes of the present invention is, of course, not intended to be limiting.
[0187] The preparations according to the invention advantageously comprise the substances which absorb UV radiation in the UV-A and/or UV-B region in a total amount of, for example, 0.1% by weight to 30% by weight, preferably 0.5 to 20% by weight, in particular 1.0 to 15.0% by weight, in each case based on the total weight of the preparations, in order to provide cosmetic preparations which protect the hair or the skin from the entire range of ultraviolet radiation. They can also be used as sunscreens for the hair or the skin.
[0188] The examples below serve to illustrate the present invention without limiting it. Unless stated otherwise, all amounts, proportions and percentages are based on the weight and the total amount or on the total weight of the preparations.
EXAMPLES
[0189]
7
EXAMPLE 1
|
|
|
(foam-like O/W cream):
|
|
|
Emulsion I
% by wt.
% by vol.
|
|
Stearic acid
3.00
|
Cetyl alcohol
8.50
|
PEG-20 stearate
8.50
|
C12-15 alkyl benzoates
4.00
|
Paraffin oil
5.00
|
Isohexadecanes
2.00
|
Glycerol
5.00
|
Sodium hydroxide
q.s.
|
Preservative
q.s.
|
Perfume
q.s.
|
Water,demineralized
ad 100
|
pH adjusted to 6.5-7.5
|
|
Emulsion I
70
|
|
Nitrogen
30
|
|
[0190]
8
EXAMPLE 2
|
|
|
(O/W lotion):
|
|
|
Emulsion II
% by wt.
% by vol.
|
|
Stearic acid
2.00
|
Myristyl alcohol
1.50
|
Cetylstearyl alcohol
0.50
|
PEG-100 stearate
3.0
|
Mineral oil
5.00
|
Hydrogenated polyisobutene
15.0
|
Glycerol
3.00
|
Sodium hydroxide
q.s.
|
Preservative
q.s.
|
Perfume
q.s.
|
Water, demineralized
ad 100
|
pH adjusted to 5.0-6.5
|
|
Emulsion II
50
|
Gas (carbon dioxide)
50
|
|
[0191]
9
EXAMPLE 3
|
|
|
(O/W lotion):
|
|
|
Emulsion III
% by wt.
% by vol.
|
|
Stearic acid
5.00
|
Cetylstearyl alcohol
5.50
|
PEG-30 stearate
1.00
|
Cyclomethicone
3.00
|
Isoeicosane
10.00
|
Polydecene
10.00
|
Citric acid
0.10
|
Glycerol
3.00
|
Perfume, preservative,
q.s.
|
Sodium hydroxide
q.s.
|
Dyes etc.
q.s.
|
Water
ad 100
|
pH adjusted to 6.0-7.5
|
|
Emulsion III
65
|
|
Gas (air)
35
|
|
[0192]
10
EXAMPLE 4
|
|
|
(O/W emulsion make-up):
|
|
|
Emulsion IV
% by wt.
% by vol.
|
|
Palmitic acid
2.00
|
Cetyl alcohol
2.00
|
PEG-100 stearate
2.00
|
Dimethicone
0.50
|
Paraffin oil
9.50
|
Dicaprylyl ether
2.00
|
Glycerol
3.00
|
Mica
1.00
|
Iron oxides
1.00
|
Titanium dioxide
4.50
|
Vitamin A palmitate
0.10
|
Sodium hydroxide
q.s.
|
Preservative
q.s.
|
Perfume
q.s.
|
Water,demineralized
ad 100
|
pH adjusted to 6.0-7.5
|
|
Emulsion IV
37
|
|
Gas (Oxygen)
63
|
|
[0193]
11
EXAMPLE 5
|
|
|
(O/W cream):
|
|
|
Emulsion V
% by wt.
% by vol.
|
|
Stearic acid
4.00
|
Cetyl alcohol
2.00
|
PEG-30 stearate
2.00
|
Sorbitan monostearate
1.50
|
Paraffin oil
5.00
|
Cyclomethicone
1.00
|
Vitamin E acetate
1.00
|
Retinyl palmitate
0.20
|
Glycerol
3.00
|
BHT
0.02
|
Disodium EDTA
0.10
|
Perfume, Preservative,
|
Dyes
q.s.
|
Potassium hydroxide
q.s.
|
Water
ad 100
|
pH adjusted to 5.0-7.0
|
|
Emulsion V
43
|
|
Gas (nitrous oxide)
57
|
|
[0194]
12
EXAMPLE 6
|
|
|
(O/W lotion):
|
Emulsion VI
% by wt.
% by vol.
|
|
Stearic acid
4.00
|
Cetylstearyl alcohol
1.00
|
PEG-100 stearate
1.00
|
Paraffin oil
6.50
|
Dimethicone
0.50
|
Vitamin E acetate
2.00
|
Glycerol
3.00
|
Perfume, preservative,
|
Dyes etc.
q.s.
|
Sodium hydroxide
q.s.
|
Water
ad 100
|
pH adjusted to 6.0-7.5
|
Emulsion VI
35
|
Gas (argon)
65
|
|
[0195]
13
EXAMPLE 7
|
|
|
(sunscreen cream):
|
Emulsion VII
% by wt.
% by vol.
|
|
Stearic acid
1.00
|
Cetylstearyl alcohol
4.00
|
Myristyl alcohol
1.00
|
PEG-20 stearate
1.00
|
Caprylic/Capric triglycerides
2.00
|
Paraffin oil
15.50
|
Dimethicone
0.50
|
Octyl isostearate
5.00
|
Glycerol
3.00
|
Octyl methoxycinnamate
4.00
|
Benzophenone-3
3.00
|
Octyl salicylate
3.00
|
BHT
0.02
|
Disodium EDTA
0.10
|
Perfume, preservatives,
q.s.
|
Dyes, etc.
|
Potassium hydroxide
q.s
|
Water
ad 100
|
pH adjusted to 5.0-6.0
|
Emulsion VII
35
|
Gas (helium)
65
|
|
Claims
- 1. A self-foaming and/or foam-like cosmetic or dermatological preparation which comprises
I. an emulsifier system which consists of
A. at least one emulsifier A chosen from the group of wholly neutralized, partially neutralized or unneutralized branched and/or unbranched, saturated and/or unsaturated fatty acids having a chain length of from 10 to 40 carbon atoms, B. at least one emulsifier B chosen from the group of polyethoxylated fatty acid esters having a chain length of from 10 to 40 carbon atoms and a degree of ethoxylation of from 5 to 100 and C. at least one coemulsifier C chosen from the group of saturated and/or unsaturated, branched and/or unbranched fatty alcohols having a chain length of from 10 to 40 carbon atoms, and IV. 1 to 90% by volume, based on the total volume of the preparation, of at least one gas chosen from the group consisting of air, oxygen, nitrogen, helium, argon, nitrous oxide (N2O) and carbon dioxide (CO2).
- 2. The preparation as claimed in claim 1, which comprises, based on the total weight of the preparation, up to 30% by weight of a lipid phase which comprises one or more nonpolar lipids having a polarity of at least 30 mN/m.
- 3. The preparation as claimed in claim 2, wherein the lipid phase comprises up to 40% by weight, based on the total weight of the lipid phase, of polar lipids having a polarity of at most 30 mN/m.
- 4. The preparation as claimed in claim 1, wherein the weight ratios of emulsifier A to emulsifier B to coemulsifier C (A:B:C) is chosen as a:b:c, where a, b and c, independently of one another, are rational numbers from 1 to 5.
- 5. The preparation as claim in claim 4, wherein the weight ratios of emulsifier A to emulsifier B to coemulsifier C (A:B:C) is chosen as a:b:c where a, b and c, independently of one another, are rational numbers from 1 to 3.
- 6. The preparation as claimed in claim 5, wherein the weight ratio of emulsifier A to emulsifier B to coemulsifier C (A:B:C) is 1:1:1.
- 7. The preparation as claimed in claim 1, wherein the total amount of substances according to A., B. and C. are chosen from the range from 2 to 20% by weight, based on the total weight of the formulation.
- 8. The preparation as claimed in claim 1, which comprises further emulsifiers chosen from the group of hydrophilic emulsifiers.
- 9. The preparation as claimed in claim 8, wherein the hydrophilic emulsifiers are selected from the group consisting of mono-, di- and tri-fatty acid esters of sorbitol.
- 10. The preparation as claimed in claim 8, wherein the total amount of the further emulsifiers is chosen to be less than 5% by weight, based on the total weight of the formulation.
- 11. The preparation as claimed in claim 1, wherein the proportion by volume of the gas(es) is chosen from 10 to 80% by volume, based on the total volume of the preparation.
- 12. The preparation as claimed in claim 1, wherein the gas chosen is carbon dioxide.
- 13. The preparation as claimed in claim 1, which comprises one or more substances chosen from the group of moisturizers.
- 14. A method of preparing a self-foaming and/or foam-like cosmetic or dermatological preparations which comprises a gaseous active ingredient, said method comprising incorporating into said preparation as a cosmetic or dermatological base an emulsifier system which consists of:
A. at least one emulsifier A chosen from the group of wholly neutralized, partially neutralized or unneutralized branched and/or unbranched, saturated and/or unsaturated fatty acids having a chain length of from 10 to 40 carbon atoms, B. at least one emulsifier B chosen from the group of polyethoxylated fatty acid esters having a chain length of from 10 to 40 carbon atoms and a degree of ethoxylation of from 5 to 100 and C. at least one coemulsifier C chosen from the group of saturated and/or unsaturated, branched and/or unbranched fatty alcohols having a chain length of from 10 to 40 carbon atoms.
- 15. A method of caring for skin, said method comprising topically applying to skin an effective amount therefor of a preparation according to claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
100 63 342.0 |
Dec 2000 |
DE |
|