Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • 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
  • A61K8/0241—Containing particulates characterized by their shape and/or structure
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
  • A61K8/06—Emulsions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
• • 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
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/27—Zinc; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/29—Titanium; Compounds thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/88—Polyamides
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
  • A61P17/16—Emollients or protectives, e.g. against radiation
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • 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
  • A61K2800/33—Free of surfactant
• • 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
  • A61K2800/41—Particular ingredients further characterized by their size
  • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
• • 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
  • A61K2800/60—Particulates further characterized by their structure or composition
  • A61K2800/65—Characterized by the composition of the particulate/core
  • A61K2800/654—The particulate/core comprising macromolecular material

Definitions

• the present invention relates to emulsifier-free finely dispersed systems of the oil-in-water and water-in-oil type, preferably as cosmetic or dermatological preparations.
• Emulsions are generally understood to mean heterogeneous systems which consist of two liquids which are immiscible or only miscible with one another to a limited extent and are usually referred to as phases.
• one of the two liquids is dispersed in the other liquid in the form of very fine droplets.
• the two liquids are water and oil and oil droplets are finely distributed in water, it is an oil-in-water emulsion (O / W emulsion, e.g. milk).
• O / W emulsion oil-in-water emulsion
• the basic character of an O ⁇ / V emulsion is characterized by the water.
• a water-in-oil emulsion (W / O emulsion, e.g. butter) is the opposite principle, whereby the basic character is determined by the oil.
• Emulsifiers In order to achieve permanent dispersion of one liquid in another, the addition of a surface-active substance (emulsifier) is necessary for emulsions in the conventional sense.
• Emulsifiers have an amphiphilic molecular structure consisting of a polar (hydrophilic) and a non-polar (lipophilic) part of the molecule, which are spatially separated from each other.
• emulsifiers In simple emulsions there are finely dispersed droplets of the second phase (water droplets in W / O or lipid vesicles in O / W emulsions) enclosed in an emulsifier shell.
• Emulsifiers reduce the interfacial tension between the phases by being located at the interface between the two liquids. They form at the live exclude oil / water interface films, which counteracts the irreversible confluence of the droplets. Mixtures of emulsifiers are often used to stabilize emulsions.
• emulsifiers can be divided into ionic (anionic, cationic and amphoteric) and nonionic according to their hydrophilic part of the molecule:.
• anionic emulsifier is soap, which is commonly referred to as the water-soluble sodium or potassium salts of the saturated and unsaturated higher fatty acids.
• the quaternary ammonium compounds are important representatives of the cationic emulsifiers.
• the hydrophilic part of the molecule of nonionic emulsifiers often consists of glycerol, polyglycerol, sorbitan, carbohydrates or polyoxyethylene glycols and is usually linked to the lipophilic part of the molecule via ester and ether bonds. This usually consists of fatty alcohols, fatty acids or isofatty acids.
• lipophilicity and hydrophilicity of emulsifiers can be changed within wide limits.
• emulsifiers The correct choice of emulsifiers is decisive for the stability of an emulsion. The characteristics of all substances contained in the system must be taken into account. Looking at z. B. skin care emulsions, polar oil components and, for example, UV filters lead to instabilities. In addition to the emulsifiers, other stabilizers are therefore used which, for example, increase the viscosity of the emulsion and / or act as a protective colloid.
• Emulsions are an important product type in the field of cosmetic and / or dermatological preparations.
• Cosmetic preparations are mainly used for skin care.
• Skin care in the cosmetic sense is primarily that the natural function of the skin as a barrier against environmental influences (eg dirt, chemicals, microorganisms) and against the loss of the body's own substances (eg water, natural fats, electrolytes) is strengthened or restored. If this function is disturbed, it can lead to stronger absorption of toxic or allergenic substances or infestation of microorganisms and, as a result, toxic or allergic skin reactions.
• the aim of skin care is also to compensate for the loss of fat and water in the skin caused by daily washing. This is especially important when the natural regeneration ability is insufficient.
• skin care products are intended to protect against environmental influences, especially sun and wind, and to delay skin aging.
• Cosmetic preparations are also used as deodorants. Such formulations serve to eliminate body odor that arises when the odorless fresh sweat is decomposed by microorganisms.
• Medical topical compositions usually contain one or more drugs in effective concentration.
• drugs for the sake of simplicity, reference is made to the legal provisions of the Federal Republic of Germany for a clear distinction between cosmetic and medical use and corresponding products (e.g. cosmetics ordinance, food and drug law).
• emulsifiers like any chemical substance, can cause allergic or hypersensitive reactions in individual cases.
• a reduction in the amount of emulsifier required can, for. B. can be achieved if it is used that finely divided solid particles have an additional stabilizing effect.
• the solid material accumulates at the oil / water phase boundary in the form of a layer, which causes the disperse phases to flow together. is prevented. It is not the chemical, but the surface properties of the solid particles that are essential.
• the solid particles are only suitable for stabilization if they are significantly smaller than the droplets of the inner phase and do not tend to form agglomerates.
• Another important property of an emulsion-stabilizing solid is its wettability. That To stabilize an O ⁇ / emulsion, the solid must, for example, be wettable more easily by water than by oil.
• European laid-open specification 0 686 391 describes water-in-oil emulsions which are free of surface-active substances and are only stabilized by solids. Spherical polyalkylsilsesquioxane particles with a diameter of 100 nm to 20 ⁇ m are used for stabilization. These emulsions can be referred to as Pickering emulsions after the above.
• Hydrodispersions are dispersions of a liquid, semisolid or solid inner (discontinuous) lipid phase in an outer aqueous (continuous) phase.
• the stability can be ensured, for example, by building a gel structure in the aqueous phase in which the lipid droplets are stably suspended.
• German Offenlegungsschrift 44 25 268 describes stable, finely dispersed, emulsifier-free cosmetic or dermatological preparations of the oil-in-water type which, in addition to an oil and a water phase, contain one or more thickeners from the group of acrylic acid polymers, polysaccharides and their alkyl ethers, and for these Thickener an interfacial tension reduction must not be measurable.
• German Offenlegungsschrift 43 03 983 discloses cosmetic or dermatological light protection formulations which are essentially free from emulsifiers, the hydrochloride being inorganic micropigments are incorporated, which serve as UV filter substances.
• the object of the present invention was to enrich the prior art with cosmetic or dermatological preparations, in which any use of conventional emulsifiers can be dispensed with.
• cosmetic or dermatological preparations which are finely dispersed systems of the oil-in-water or water-in-oil type
• the preparations contain significantly less than 0.5% by weight of one or more emulsifiers or are even completely emulsifier-free.
• the preparations according to the invention are mixtures of oils or oil-soluble substances and water or water-soluble components which are stabilized by the addition of the microfine polymer particles and do not have to contain an emulsifier in the conventional sense.
• the stabilization is achieved in that the microfine polymer particles attach to the droplets of the disperse phase and form, so to speak, a mechanical barrier that prevents the coalescing, ie the confluence of the droplets.
• the preparations according to the invention are extremely satisfactory preparations in every respect, which are surprisingly highly variable in their water-fat phase ratio and also offer the advantage over the prior art that large amounts of oils can be incorporated stably in water. It was also surprising that if the teaching on technical action disclosed herewith is followed, both Pickering emulsions of the water-in-oil type and Pickering emulsions of the oil-in-water type can be produced.
• Advantageous microfine polymer particles for the purposes of the present invention are, for example, polycarbonates, polyethers, polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamides, polyacrylates and the like.
• microfine polyamide particles which are available under the trade name SP-500 from TORAY are advantageous.
• Polyamide 6 also: nylon 6) or polyamide 12 (also: nylon 12) particles are also advantageous.
• Polyamide 6 is the polyamide [poly ( ⁇ -caprolactam)] composed of ⁇ -aminocaproic acid (6-aminohexanoic acid) or ⁇ -caprolactam
• polyamide 12 is a poly ( ⁇ -lauric lactam) made of ⁇ -laurolactam.
• Advantageous for the purposes of the present invention are, for example Orgasol ® 1002 (polyamide 6) and Orgasol ® 2002 (polyamide 12) from ELF ATOCHEM.
• Microfine polymethacrylates are further advantageous polymer particles.
• Such particles are available, for example, under the trade name POLYTRAP ® from DOW CHEMICAL.
• microfine polymer particles used are coated on the surface.
• This surface treatment can consist in that the pigments are provided with a thin hydrophilic layer by methods known per se.
• Advantageous coatings consist, for example, of TiO 2 , ZrO 2 or other polymers, such as polymethyl methacrylate.
• Particularly advantageous microfine polymer particles for the purposes of the present invention are also obtainable by the process for the hydrophilic coating of hydrophobic polymer particles described in US Pat. No. 4,898,913.
• the average particle diameter of the microfine polymer particles used is less than 100 ⁇ m, particularly advantageously less than 50 ⁇ m. It is essentially irrelevant in which form (platelets, rods, beads, etc.) the polymer particles used are present.
• amphiphilic, microfine polymer particles according to the invention with further amphiphilic pigments, which may also contribute to stabilizing the Pickering emulsions.
• Such pigments are, for example, micronized, inorganic pigments which are selected from the group of amphiphilic metal oxides, in particular from the group titanium dioxide, zinc oxide, silicon dioxide or silicates (for example talcum), where the metal oxides can be present either individually or in a mixture . It is essentially irrelevant in which of the possibly naturally occurring modifications the amphiphilic metal oxides used are present.
• the average particle diameter of the amphiphilic metal oxides used for combination with polymer particles according to the invention is preferably selected between 1 nm and 200 nm, particularly advantageously between 5 nm and 100 nm.
• amphiphilic microfine polymer particles according to the invention with untreated, almost pure, amphiphilic metal oxide particles, in particular with those which are also used as a dye in the food industry and / or as an absorber of UV radiation in sunscreen agents can be.
• Advantageous are, for example, the zinc oxide pigments available from Merck and those that are available under the trade names zinc oxide neutral from Haarmann & Reimer or NanoX from the Harcros Chemical Group.
• Another advantageous, untreated pigment is boron nitride.
• the microfine polymer particle or particles are preferably combined with the boron nitrides listed below:
• the average particle diameter of the boron nitride particles used is preferably chosen to be less than 20 ⁇ m, in particular less than 15 ⁇ m.
• Also advantageous according to the invention is the combination of microfine polymer particles with amphiphilic inorganic pigments which have been surface-treated ("coated") in a water-repellent manner, and at the same time an amphiphilic character of these pigments is to be formed or maintained.
• This surface treatment can consist in that the Pigments are provided with a thin hydrophobic layer by methods known per se.
• One such method which is described below using the example of titanium dioxide, consists, for example, in that the hydrophobic surface layer after a reaction according to
• n and m are stoichiometric parameters to be used at will, R and R 'are the desired organic radicals.
• Particularly advantageous combination partners are TiO 2 pigments, for example those coated with aluminum stearate, available under the trade name MT 100 T from TAYCA.
• Another advantageous coating of the combination partners consists of dimethylpolysiloxane (also: Dimethicone), a mixture of fully methylated, linear siloxane polymers which are blocked at the end with trimethylsiloxy units.
• the combination of microfine polymer particles with zinc oxide pigments, which are coated in this way, is particularly advantageous in the sense of the present invention.
• Advantageous combination partners are also available from Carborundum under the trade name Tres BN ® UHP 1106, boron nitride particles treated with dimethicone.
• coated boron nitride particles are also those which have been treated with polymethylhydrogensiloxane, a linear polysiloxane, which is also referred to as methicone.
• Advantageous boron nitride particles treated with methicone are, for example, those available from Carborundum under the trade name Tres BN® UHP 1107.
• the inorganic amphiphilic pigments used in addition to microfine polymer particles are coated with a mixture of dimethylpolysiloxane, in particular dimethylpolysiloxane with an average chain length of 200 to 350 dimethylsiloxane units, and silica gel, which is also referred to as simethicone.
• the inorganic pigments are additionally coated with aluminum hydroxide or aluminum oxide hydrate (also: alumina, CAS no .: 1333-84-2).
• Particularly advantageous combination partners are titanium dioxides which are coated with simethicone and alumina, the coating also being able to contain water.
• An example of this is the titanium dioxide available from Merck under the trade name Eusolex T2000.
• Another advantage of the present invention is the combination of microfine polymer particles with a mixture of different inorganic, amphiphilic pigment types both within a crystal, for example as iron mixed oxide or talc (magnesium silicate), as well as by mixing several metal oxide types within one preparation.
• Particularly advantageous combination partners are magnesium silicates, for example those available from Grolmann under the trade name Talkum Micron.
• the amphiphilic microfine polymer particles according to the invention can furthermore advantageously be combined with other pigments, for example with titanium dioxide pigments which are coated with octylsilanol, and / or with silicon dioxide particles which have been treated to be water-repellent on the surface.
• Silicon dioxide particles suitable for combination are, for example, spherical polyalkylsilsesquioxane particles as mentioned in European laid-open specification 0 686 391. Such polyalkylsilsesquioxane particles are available, for example, from Degussa under the trade names Aerosil R972 and Aerosil 200V.
• amphiphilic microfine polymer particles according to the invention are furthermore preferably combined with amphiphilic modified polysaccharides which do not show any thickening properties.
• amphiphilic polysaccharides can be obtained, for example, by reacting starch with mono-, bi- or polyfunctional reagents or oxidizing agents in reactions which are largely polymer-analogous.
• R can represent, for example, a hydrogen and / or an alkyl and / or aralkyl radical (in the case of starch ethers) or a hydrogen and / or an organic and / or inorganic acid radical (in the case of starch esters).
• Starch ethers and starch esters are advantageous combination partners in the sense of the present invention. It is particularly advantageous to combine the polymer particles of the invention with starch ethers, e.g. B. with those which are obtainable by etherification of starch with tetramethylolacetylene diurea and which are referred to as Amylum non mucilaginosum (non-swelling starch).
• polymer particles with starch esters and / or their salts, for example with sodium and / or aluminum salts of low-substituted half-esters of starch, in particular with sodium starch n-octenyl succinate of structural formula (I), in which R is the following Structure distinguished
• the mean particle diameter of the modified polysaccharides used for combination with the polymer particles according to the invention is advantageous to choose the mean particle diameter of the modified polysaccharides used for combination with the polymer particles according to the invention to be less than 20 ⁇ m, particularly advantageously less than 15 ⁇ m.
• modified polysaccharides which can be combined with the polymer particles according to the invention, is of course not intended to be limiting.
• Modified polysaccharides which are advantageous combination partners for the purposes of the present invention, are obtainable in numerous ways known per se, both chemical and physical. In principle, new ways of producing such polysaccharides are also conceivable. It is essential that the modified polysaccharides show amphiphilic properties and that they do not have a thickening effect.
• the total concentration of all pigments is greater than 0.1% by weight, particularly advantageously between 0.1% by weight and 30% by weight.
• concentration of amphiphilic microfine polymer particles according to the invention - likewise based on the total weight of the preparations - in the sense of the present invention preferably from the range 0.1% by weight to 30% by weight, advantageously 0, 5% to 10% by weight is to be selected
• the Pickering emulsions according to the invention can serve as the basis for cosmetic or dermatological formulations. These can be composed as usual and for example for the treatment and care of the skin, as a lip care product, as a demo product and as a make-up or make-up removal product in decorative cosmetics or as a light protection preparation
• the cosmetic and dermatological preparations according to the invention are applied to the skin in a sufficient amount in the manner customary for cosmetics
• cosmetic or topical dermatological compositions in the sense of the present invention, depending on their structure, can be used, for example, as skin protection cream, cleansing milk, sunscreen lotion, nutritional cream, day or night cream, etc. It is possible and advantageous, if appropriate, to use the compositions according to the invention as the basis for pharmaceutical formulations - to use gene
• the cosmetic and dermatological preparations according to the invention can contain cosmetic auxiliaries, as are usually used in such preparations, for example preservatives, bactericides, perfumes, substances for preventing foaming, dyes, pigments which have a coloring effect, thickeners, softening, moisturizing and / or moisturizing substances, fats, oils, waxes or other usual components of a cosmetic or dermatological formulation such as alcohols, polyols, polymers, foam stabilizers, electrolytes, organic solvents or silicone derivatives
• the preparations according to the invention are very good vehicles for cosmetic or dermatological active ingredients in the skin, advantageous active ingredients being antioxidants which can protect the skin against oxidative stress
• the preparations advantageously contain one or more antioxidants. All the antioxidants suitable or useful for cosmetic and / or dermatological applications can be used as cheap but nevertheless optional antioxidants. It is advantageous to use antioxidants as the only class of active ingredient, for example then , if a cosmetic or dermatological application is in the foreground, such as combating the oxidative stress on the skin. However, it is also advantageous to provide the stick preparations according to the invention with one or more antioxidants if the preparations are different To serve the purpose, for example as deodorants or sunscreens
• the antioxidants are particularly advantageously selected from the group consisting of amino acids (eg glycine, histidine, tyrosine, tryptophan) and their derivatives, imidazoles (eg urocanic acid) and their derivatives, peptides such as D, L-carnosine, D-carnosine, L -Carnosine and its derivatives (eg Anse ⁇ n), carotenoids, carotenes (eg ⁇ -carotene, ⁇ -carotene, lycopene) and their derivatives, chlorogenic acid and their derivatives, lipoic acid and its derivatives (eg dihydroliponic acid), aurothioglucose, Propylthiouracil and other thiols (e.g.
• amino acids eg glycine, histidine, tyrosine, tryptophan
• imidazoles eg urocanic acid
• peptides such as D, L-carnosine, D-
• thioredoxin glutathione, cysteine, cystine, cystamine and their glycosyl, N, acetyl, methyl, ethyl, propyl, amyl, butyl and lauryl, palmitoyl, oleyl, ⁇ , unoleyl, cholesteryl and glyceryl esters) and their salts, dilauryl thiodipropionate, distearyl thio dipropionate, thiodipropionic acid and their derivatives (esters, ethers, peptides, lipids, nucleotides, nucleosides and salts) as well as sulfoximine compounds (eg buthiomn-sulfoxmsulfone, homocysteine sulfone sulfone, homocysteine sulfone sulfate, homocysteine sulfone sulfate, homocysteine sulf
• ⁇ -hydroxy fatty acids e.g. ⁇ -hydroxy fatty acids, palmitic acid, phytic acid, lactofer ⁇ n
• ⁇ -hydroxy acids e.g. Citric acid, lactic acid, malic acid
• humic acid e.g. Citric acid, lactic acid, malic acid
• bile acid bile extracts
• bilirubin biliverdin
• EDTA EDTA
• EGTA unsaturated fatty acids and their derivatives
• vitamin E acetate
• vitamin A and derivatives vitamin A palmitate
• coniferyl benzoate of the benzoic resin rutmate and their Derivatives -Glycosylrutin, Ferulasaure Furfurylidenglucitol, Carnosin Butylhydroxytoluol, Butylhydroxyanisol, Nordihydroguajakh resin acid, Nordihydroguajaretklare, trihydroxybutyrophenon, uric acid and its derivatives, mannose and its derivatives, zinc and its derivatives (e.g. ZnO, ZnSO 4 ), selenium and its derivatives (e.g. selenomethionine), stilbenes and their derivatives (e.g. stilbene oxide and trans-stilbene oxide) the derivatives suitable according to the invention (salts, esters, ethers, sugars, nucleotides, nucleosides, peptides and lipids) of these active substances.
• the amount of the aforementioned antioxidants (one or more compounds) in the preparations according to the invention is preferably 0.001 to 30% by weight, particularly preferably 0.05-20% by weight, in particular 1-10% by weight, based on the total weight of the preparation.
• vitamin E and / or its derivatives represent the antioxidant (s)
• vitamin A or vitamin A derivatives or carotenes or their derivatives represent the antioxidant or antioxidants, it is advantageous to use their respective concentrations in the range from 0.001-10% by weight, based on the total weight of the formulation, to choose.
• the active ingredients can also be selected very advantageously from the group of lipophilic active ingredients, in particular from the following group:
• Cosmetic and dermatological preparations in the form of a sunscreen are also favorable. These preferably contain at least one UV-A filter substance and / or at least one UV-B filter substance and / or at least one further inorganic pigment from the group of the oxides of iron, zirconium, silicon, manganese, aluminum, cerium and mixtures thereof, and modifications where the oxides are the active agents.
• UV-A or UV-B filter substances are usually incorporated into day creams.
• Preparations according to the invention can advantageously contain substances which absorb UV radiation in the UV-B range, the total amount of filter substances, for. B. 0.1 wt .-% to 30 wt .-%, preferably 0.5 to 15 wt .-%, based on the total weight of the preparations to provide cosmetic preparations that the hair or the skin before protect the entire range of ultraviolet radiation.
• the emulsions according to the invention contain UV-B filter substances, they can be oil-soluble or water-soluble.
• Oil-soluble UV-B filters which are advantageous according to the invention are, for example:
• 3-benzylidene camphor derivatives preferably 3- (4-methylbenzylidene) camphor, 3-benzylidene camphor;
• 4-aminobenzoic acid preferably 4- (dimethylamino) benzoic acid (2-ethylhexyl) ester, 4- (dimethylamino) amyl benzoate,
• Esters of cinnamic acid preferably 4-methoxycinnamate (2-ethylhexyl) ester, 4-methoxycinnamate isopentyl ester, • esters of salicylic acid, preferably salicyl acid (2-ethylhexyl) ester, salicyl acid (4-isopropylbenzyl) ester, salicyl ester,
• benzophenone preferably 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone,
• esters of benzalmalonic acid preferably 4-methoxybenzalmalonic acid (2-ethylhexyl) ester
• T ⁇ azinden ⁇ vate symmetrically or asymmetrically substituted with respect to the C 3 axis of the basic tnazine body, preferably 4,4 ', 4 "- (1, 3,5-tr ⁇ az ⁇ n-2,4,6-t ⁇ ylt ⁇ m ⁇ no) - t ⁇ s-benzoic acid tr ⁇ s (2-ethylhexyl ester ) (symmetrical) and 2,4-B ⁇ s - ⁇ [4- (2-ethylhexyloxy) -2-hydroxy] phenyl ⁇ -6- (4-methoxyphenyl) -1, 3,5-t ⁇ az ⁇ n, 2,4 -B ⁇ s - ⁇ [4- (3-sulfonato) -2-hydroxy-propyioxy) -2-hydroxy] phenyl ⁇ -6- (4-methoxyphenyl) -1, 3,5-tr ⁇ az ⁇ n
• Benzot ⁇ azolde ⁇ vate preferably 2,2'-methylene-b ⁇ s- (6- (2H-benzot ⁇ azol-2-yl) -4- (1, 1, 3,3-tetramethylbutyl) phenol)
• Advantageous water-soluble UV-B filter substances are, for example
• Salts of 2-phenylbenz ⁇ m ⁇ dazol-5-sulfonic acid such as its sodium, potassium or T ⁇ -ethanolammonium salt, and the sulfonic acid itself
• Sulfonic acid derivatives of 3-benzylidene camphor such as 4- (2-oxo-3-bornylidene methyl) benzenesulfonic acid, 2-methyl-5- (2-oxo-3-bornylidene methyl) sulfonic acid and their salts.
• UV-B filters which can be used in the Pickering emulsions according to the invention, is of course not intended to be limiting.
• UV-A filters in Pickering emulsions according to the invention which have hitherto usually been contained in cosmetic preparations.
• These substances are preferably derivatives of dibenzoyl methane, in particular 1- (4'-tert-butylphenyl) -3- (4'-methoxyphenyl) propane-1, 3-dione and 1-phenyl-3- (4'-isopropylphenyl) propane-1,3-dione.
• UV-A filter substances are phenylene-1,4-bis (2-benzimidazyl) -3,3'-5,5'-tetrasulfonic acid:
• benzene-1,4-di (2-oxo-3-bornylidenemethyl-10-sulfonic acid) is also referred to as benzene-1,4-di (2-oxo-3-bornylidenemethyl-10-sulfonic acid) and is characterized by the following structure:
• UV filter substances are also so-called broadband filters, i.e. Filter substances that absorb both UV-A and UV-B radiation.
• An example of a broadband filter which can be used advantageously is ethylhexyl-2-cyano-3,3-diphenyl acrylate (octocrylene), which is available from BASF under the name Uvinul ® N 539 and is characterized by the following structure:
• UV-A filters Preparations which contain UV-A filters or so-called broadband filters are also the subject of the invention.
• the quantities used for the UV-B combination can be used.
• Preparations according to the invention can also advantageously be used as the basis for cosmetic deodorants or antiperspirants, so that in a particular embodiment the present invention relates to Pickering emulsions as the basis for cosmetic deodorants.
• Cosmetic deodorants are used to eliminate body odor that arises when the fresh, odorless sweat is decomposed by microorganisms.
• the usual cosmetic deodorants are based on different active principles.
• astringents primarily aluminum salts such as aluminum hydroxychloride (aluminum chlorohydrate) - can reduce the formation of sweat.
• the use of antimicrobial substances in cosmetic deodorants can reduce the bacterial flora on the skin. Ideally, only the odor-causing microorganisms should be effectively reduced. The sweat flow itself is not affected by this, in the ideal case only the microbial decomposition of the sweat is temporarily stopped.
• odor maskers such as the common perfume components, odor absorbers, for example the layered silicates described in patent application DE-P 40 09 347, of which in particular montmorillonite, kaolinite, llite, beidellite, nontronite, saponite , Hectorite, bentonite, smectite, furthermore, for example, zinc salts of ricinoleic acid.
• Germ-inhibiting agents are also suitable for being incorporated into the W / O emulsion sticks according to the invention.
• Advantageous substances are, for example, 2,4,4'-trichloro-2'-hydroxydiphenyl ether (irgasane), 1,6-di- (4-chlorophenylbiganido) hexane (chlorhexidine), 3,4,4'-trichlorocarbanilide, quaternary ammonium compounds, clove oil, mint oil, thyme oil, triethyl citrate, farnesol (3,7,11-trimethyl-2,6, 10-dodecatrien-1-ol) and those described in patent publications DE-37 40 186, DE-39 38 140, DE-42 04 321, DE-42 29 707, DE-43 09 372, DE-44 11 664, DE-195 41 967, DE-195 43 695, DE-195 43 696, DE-195 47 160, DE- 196 02 108, DE-196 02 110, DE-196 02 111, DE-196 31 003, DE-196 31 004 and DE-196 34 019 and the patents DE-
• the cosmetic deodorants according to the invention can be in the form of water-containing cosmetic preparations which can be applied from normal containers.
• the amount of the antiperspirant active ingredients or deodorants (one or more compounds) in the preparations is preferably 0.01 to 30% by weight, particularly preferably 0.1-20% by weight, in particular 1-10% by weight, based on the total weight of the preparation.
• the pens according to the invention are also excellent vehicles for dermatological active ingredients. They are particularly suitable as carriers for substances active against acne.
• Acne is a skin disease with various forms and causes, characterized by non-inflammatory and inflammatory nodules, starting from blocked hair follicles (comedones), which can lead to pustules, abscesses and scars.
• the most common is acne vulgaris, which mainly occurs during puberty.
• Causal conditions for acne vulgaris are cornification and constipation of the hair follicle mouth, the production of taig depending on the blood level of the male sex hormones and the production of free fatty acids and tissue-damaging enzymes by bacteria ⁇ Propionibacterium acnes).
• All common acne-active substances can be used to advantage, especially benzoyl peroxide, bituminosulfonates (ammonium, sodium and calcium salts of shale oil sulfonic acids), salicylic acid (2-hydroxybenzoic acid), miconazole (1- [2- (2,4- Dichlorobenzyloxy) -2- (2,4-dichlorophenyl) ethyl] imidazole) and derivatives, adapalene (6- [3- (1-adamantyl) -4-methoxyphenyl] -2-naphthoic acid), azelaic acid (nonandioic acid) , Mesulfen (2,7-dimethylthianthrene, C 1 H ⁇ 2 S 2 ) and aluminum oxide, zinc oxide and / or finely divided sulfur.
• the amount of the anti-acne agent (one or more compounds) in the preparations is preferably 0.01 to 30% by weight, particularly preferably 0.1-20% by weight, in particular 1-10% by weight, based on the total weight of the preparation.

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• 1998
  • 1998-08-01 DE DE19834819A patent/DE19834819A1/de not_active Withdrawn
• 1999
  • 1999-07-22 JP JP2000563234A patent/JP2002522363A/ja active Pending
  • 1999-07-22 EP EP99936590A patent/EP1100431A1/de not_active Withdrawn
  • 1999-07-22 WO PCT/EP1999/005242 patent/WO2000007548A1/de not_active Application Discontinuation
  • 1999-07-22 US US09/744,494 patent/US6620407B1/en not_active Expired - Fee Related

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