EP1888012A2

EP1888012A2 - Oil-containing deodorizing aerosol compositions having skin-cooling active substances

Info

Publication number: EP1888012A2
Application number: EP06753830A
Authority: EP
Inventors: Winfried Emmerling; Ulrike Heinsohn
Original assignee: Henkel AG and Co KGaA
Current assignee: Henkel AG and Co KGaA
Priority date: 2005-06-01
Filing date: 2006-05-24
Publication date: 2008-02-20
Also published as: AU2006254359A8; WO2006128622A3; AU2006254359A1; US20080124282A1; WO2006128622A2; RU2007148714A; DE102005025495A1

Abstract

The invention relates to essentially alcohol-free deodorizing aerosol compositions, which contain selected oils, a skin-cooling active substance, a deodorizing active substance and a propellant gas.

Description

"Oil-containing deodorant aerosol compositions with skin-cooling active ingredients"

The present invention relates to substantially alcohol-free, oil-containing deodorant aerosol compositions which contain at least one skin-cooling active ingredient and have a particularly high care effect and skin compatibility.

In addition to antimicrobial and / or perspiration-reducing active substances, deodorant aerosol compositions generally contain a variant-specific perfuming which, in addition to the product characterization, has, above all, an odor-masking function. Today, consumers expect a cosmetic product but also other added benefits, especially good skin care properties and a high skin compatibility, especially for sensitive skin. Since the skin around the armpits is often more sensitive than the facial skin, the problem of skin compatibility in the development of forearm products is particularly significant.

In addition, it is often desirable that cosmetic products, especially deodorants or antiperspirants, have a refreshing effect.

In the case of commercial deodorant sprays, a large part of the refreshing effect is achieved by a content of volatile solvents, in particular of ethanol or volatile silicone oils, such as cyclomethicone. However, a high ethanol content can lead to hypersensitivity reactions on the especially sensitive skin of the armpits. A high content of cyclomethicones or other volatile silicone oils, in particular short-chain linear silicone oils, such as hexamethyldisiloxane, octamethyltrisiloxane and decamethyltetrasiloxane, in order to achieve the desired cooling effect, is disadvantageous for reasons of cost. From US 4,174,386 antiperspirant sprays were known, which cause a skin-cooling effect due to a higher content of pentanes or other propellant gases, which are present as a liquid at room temperature. However, such propellant gases lower the vapor pressure of the entire propellant gas mixture, which can lead to incomplete emptying of the aerosol container. The object of the present invention was to provide aerosol deodorant compositions which have a refreshing skin feel and at the same time a high skin tolerance. Another object of the present invention was to provide deodorant aerosol compositions having improved / longer lasting deodorant performance and / or freshness.

Surprisingly, it has now been found that particularly skin-compatible and caring deodorant aerosol compositions having a particular freshness effect on the skin and particularly long-lasting deodorizing action can be prepared by incorporating at least one skin-cooling active ingredient into a liquid carrier of selected oil bodies and deodorant active ingredients and with a propellant gas into an aerosol container is bottled. The deodorant sprays according to the invention achieve a high and at the same time pleasant freshness effect and excellent deodorant performance even without ethanol.

The present invention therefore relates to a deodorant aerosol composition comprising at least one oil selected from the esters of linear or branched saturated or unsaturated fatty alcohols having from 2 to 30 carbon atoms with linear or branched saturated or unsaturated fatty acids having from 2 to 30 carbon atoms which may be hydroxylated , the Benzoesäureestem of linear or branched C _{_8-22} alkanols, the C ₈ -C ₂₂ -Fettalkoholestem monovalent or polyvalent C ₂ -C 7 hydroxycarboxylic acids, branched saturated or unsaturated fatty alcohols having 6-30 carbon atoms, dicarboxylic acid esters of linear or branched C ₂ -Ci _O - alkanols, di-n-alkyl ethers having a total of 12 to 36 carbon atoms, at least one skin-cooling agent, at least one deodorizing agent and at least one propellant gas, wherein ethanol, isopropanol, 1-propanol and / or 2-propanol in total amounts of less than 0.5% by weight e are maintained.

The compositions according to the invention comprise at least one oil selected from the following groups: the esters of linear or branched saturated or unsaturated fatty alcohols having from 2 to 30 carbon atoms with linear or branched saturated or unsaturated fatty acids having from 2 to 30 carbon atoms which may be hydroxylated. These include preferably 2-ethylhexyl palmitate (z. B. Cegesoft ^® C 24), hexyldecyl stearate (Eutanol ^® G 16), hexyldecyl laurate, isodecyl neopentanoate, isononyl isononanoate, 2- Ethylhexyl stearate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl isostearate, isopropyl oleate, isooctyl stearate, isononyl stearate, isocetyl stearate, isononyl isononanoate, isotridecyl isononanoate, cetearyl isononanot, 2-ethylhexyl laurate, 2-ethylhexyl isostearate, 2-ethylhexyl cocoate, 2-octyldodecyl palmitate, butyloctanoic acid-2 butyloctanoate, diisotridecyl acetate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, ethylene glycol dioleate and dipalmitate and mixtures thereof; the Benzoesäureestem of linear or branched C _{_8-22} alkanols, and C ₁₂ -C ₁ 5 alkyl benzoates, eg. B. the commercial product Finsolv ^® TN, isostearyl benzoate, z. B. the commercial product Finsolv ^® SB, and ethylhexyl benzoate, z. As the commercial product Finsolv ^® EB, and mixtures thereof, are particularly preferred; C ₈ -C ₂₂ fatty alcohol esters of monohydric or polyhydric C ₂ -C ₇ hydroxycarboxylic acids, particularly preferably the esters of glycolic acid, lactic acid, malic acid, tartaric acid, citric acid and salicylic acid and mixtures thereof. Particularly preferred esters based on linear Ci _2/15 alkanols, eg. B. C ^ -C ^ alkyl lactate, and branched in 2-position C _{12 /} i ₃ alkanols, for. For example, di-C ₁₂ -C ₁₃ alkyl malate, under the trademark Cosmacol ^® by Nordmann, Rassmann GmbH & Co, Hamburg, refer, in particular the commercial products Cosmacol ^® EMI, Cosmacol ^® ESI and Cosmacol ^® ETI; the branched saturated or unsaturated fatty alcohols having 6 to 30 carbon atoms. These alcohols are also often referred to as Guerbet alcohols, as they are obtainable by the Guerbet reaction. Particularly preferred alcohol oils are, for example, hexyl decanol (for example Eutanol ^® G.), Octyl dodecanol, and 2-ethylhexyl alcohol, and mixtures thereof;

Dicarboxylic acid esters of linear or branched C ₂ -C 10 -alkanols, particularly preferably diisopropyl adipate, di-n-butyl adipate, di (2-ethylhexyl) adipate, dioctyl adipate, diethyl / di-n-butyl / dioctyl sebacate, diisopropyl sebacate, dioctyl malate, dioctyl maleate, Dicaprylyl maleate, diisooctyl succinate, di-2-ethylhexyl succinate and di- (2-hexyldecyl) succinate, and mixtures thereof;

Di-n-alkyl ethers with a total of 12 to 36, in particular 12 to 24 carbon atoms, with di-n-octyl ether (z. B. Cetiol ^® OE), di-n-decyl ether, n-hexyl-n-octyl ether and n Octyl n-decyl ethers and mixtures thereof are particularly preferred.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one ester of linear or branched saturated or unsaturated fatty alcohols having from 2 to 30 carbon atoms with linear or branched saturated or unsaturated fatty acids having from 2 to 30 carbon atoms, which may be hydroxylated, selected from 2-ethylhexyl palmitate, hexyldecyl stearate, hexyldecyl laurate, isodecyl neopentanoate, isononyl isononanoate , 2-ethylhexyl stearate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl isostearate, isopropyl oleate, isooctyl stearate, isononyl stearate, isocetyl stearate, isononyl isononanoate, isotridecyl isononanoate, cetearyl isononanote, 2-ethylhexyl laurate, 2-ethylhexyl isostearate, 2-ethylhexyl cocoate, 2-octyldodecyl palmitate, butyloctanoic acid 2-butyl octanoate, diisotridecyl acetate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, ethylene glycol dioleate and dipalmitate and mixtures thereof.

Further particularly preferred deodorant aerosol compositions of the invention are characterized in that they thereof at least one benzoic acid esters of linear or branched alkanols Cβ- _22, selected from C ₁₂ -C ₅ alkyl benzoates, isostearyl benzoate and ethylhexyl benzoate and mixtures contain.

Further particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one C ₈ -C ₂₂ fatty alcohol ester of monohydric or polyhydric C ₂ -C ₇ hydroxycarboxylic acids selected from the C ₈ -C ₂₂ fatty alcohol esters of glycolic acid, lactic acid, malic acid, tartaric acid , Citric acid and salicylic acid and mixtures thereof.

Further particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one branched saturated or unsaturated fatty alcohol having 6 to 30 carbon atoms selected from hexyl decanol, octyldodecanol and 2-ethylhexyl alcohol and mixtures thereof.

Further particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one dicarboxylic acid ester of linear or branched C ₂ -C ₁₀ -alkanols selected from diisopropyl adipate, di-n-butyl adipate, di- (2-ethylhexyl) adipate, dioctyl adipate, Diethyl / di-n-butyl / dioctyl sebacate, diisopropyl p-racacate, dioctyl malate, dioctyl maleate, dicaprylyl maleate, diisooctyl succinate, di-2-ethylhexyl succinate and di- (2-hexyldecyl) succinate, and mixtures thereof. Further particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one di-n-alkyl ether having a total of 12 to 36 carbon atoms selected from di-n-octyl ether, di-n-decyl ether, n-hexyl n-octyl ether and n- Octyl n-decyl ethers and mixtures thereof.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one of said oils in total amounts of 0.5-15% by weight, preferably 1-10% by weight and particularly preferably 3-7% by weight. wherein amounts of 5 to 6 wt .-% are extremely preferred.

Preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one skin-cooling active ingredient selected from menthol, isopulegol and menthol derivatives, preferably menthyl lactate, menthol propylene glycol carbonate, menthol ethylene glycol carbonate, menthyl pyrrolidonecarboxylic acid, methyl methyl ether, menthoxypropanediol, menthone glycerol acetal (9-methyl-6- (1 -methylethyl) - 1, 4-dioxaspiro (4.5) decane-2-methanol), monomenthyl succinate, menthyl glycolate and 2-hydroxymethyl-3,5,5-trimethylcyclohexanol and mixtures thereof. Menthol, isopulegol, menthyl lactate, menthol propylene glycol carbonate, menthol ethylene glycol carbonate, menthone glycerol acetal (obtainable, for example, from Symrise under the trade name Frescolat MGA), menthoxypropanediol and menthylpyrrolidonecarboxylic acid and mixtures of these substances are particularly preferred as skin-cooling active ingredients. An inventively extremely preferred mixture of skin-cooling agents is selected from Mentholpropylenglycolcarbonat, Mentholethylenglycolcarbonat and menthol, as it is available, for example, under the trade name Optacool A from Symrise.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one skin-cooling active ingredient in total amounts of 0.01-1% by weight, preferably 0.02-0.5% by weight and more preferably 0.05-0.2% by weight. %, in each case based on the total weight of the aerosol composition.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one encapsulated skin-cooling active substance. Preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one deodorizing agent selected from odor absorbers, deodorizing ion exchangers, germ-inhibiting active ingredients, prebiotic active components and inhibitors of the enzymes responsible for the sweat decomposition or, more preferably, combinations of these active ingredients.

Silicates serve as odor absorbers, which at the same time advantageously support the rheological properties of the composition according to the invention. Among the silicates particularly preferred according to the invention are, in particular, phyllosilicates and, among these, in particular montmorillonite, kaolinite, mit, beidellite, nontronite, saponite, hectorite, bentonite, smectite and talcum. Further particularly preferred odor absorbers are, for example, zeolites, zinc ricinoleate, cyclodextrins, certain metal oxides, such as. As alumina, and chlorophyll. They are preferably used in an amount of 0.1-10% by weight, more preferably 0.5-7% by weight and most preferably 1-5% by weight, based in each case on the overall composition.

According to the invention, germ-inhibiting or antimicrobial active ingredients are understood as meaning those active substances which reduce the number of skin germs participating in the formation of the odor or inhibit their growth. These organisms include, but are not limited to, various species of the group of staphylococci (eg, Staphylococcus hominis), the group of corynebacteria (eg, Corynebacterium xerosis, Corynebacterium CDCG2), anaerococci (eg, Anaerococcus octavius), and micrococci. Particularly preferred germ-inhibiting or antimicrobial active ingredients according to the invention are the fragrance mixtures Protectate HR and Protectate MOD 2 from Symrise. The preferred fragrance mixture Protectate HR from Symrise contains 25 to 50% by weight of phenoxyethanol, 5 to 10% by weight of 2-methyl-5-phenylpentan-1-ol with the common name Rosaphen, 34 to 70% by weight. % 2-Benzylheptan-1-ol with the common name Jasmol, 1-5% by weight of 4-methoxybenzyl alcohol (aniseed alcohol) and 0.01-1% by weight of 5-methyl-2-isopropylphenol (thymol). The fragrance mixture Protectate MOD 2 from Symrise, which is particularly preferred according to the invention, contains 25-45% by weight of phenoxyethanol, 5-10% by weight of 2-methyl-5-phenylpentan-1-ol and 45-70% by weight of 2-benzyl heptane-1-ol.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one of the fragrance mixtures Protectate HR or Protectate MOD 2 in total amounts of 0.001 to 5 wt .-%, preferably 0.05 to 2 wt .-% and particularly preferably 0.1 to 1, 0 wt .-%, each based on the total cosmetic composition, contain.

Furthermore, organohalogen compounds and halides, quaternary ammonium compounds, a number of plant extracts and zinc compounds according to the invention are preferred germ-inhibiting or antimicrobial agents. These include triclosan, chlorhexidine and chlorhexidine gluconate, 3,4,4'-trichlorocarbanilide, bromochlorophene, dichlorophene, chlorothymol, chloroxylenol, hexachlorophene, dichloro-m-xylenol, dequalinium chloride, domiphenbromide, ammonium phenolsulfonate, benzalkonium halides, benzalkonium cetyl phosphate, Benzalkonium saccharinates, benzethonium chloride, cetylpyridinium chloride, laurylpyridinium chloride, laurylisoquinolinium bromide, methylbenzedonium chloride. Furthermore, phenol, phenoxyethanol, disodium dihydroxyethylsulfosuccinyl undecylenate, sodium bicarbonate, zinc lactate, sodium phenolsulfonate and zinc phenolsulfonate, ketoglutaric acid, terpene alcohols such. B. the particularly preferred Famesol, chlorophyllin copper complexes, α-monoalkyl glycerol ether with a branched or linear saturated or unsaturated, optionally hydroxylated C ₆ - C ₂₂ alkyl, particularly preferably α- (2-ethylhexyl) glycerol, commercially available as Sensiva SC 50 ^® (ex Schulke & Mayr), Carbonsäureester of mono-, di- and triglycerol (z. B. rinmonolaurat glycerol, diglycerol), as well as plant extracts lantibiotics (for. example, green tea, and components of the linden blossom oil) preferred deodorant actives , Further preferred deodorizing active ingredients are selected from so-called prebi tically active components, which according to the invention are understood to mean those components which inhibit only or at least predominantly the odor-causing germs of the skin microflora, but not the desired, that is, the non-odor-causing germs that belonging to a healthy skin microflora. Explicitly included here are the active substances which are disclosed in the published patent applications DE 10333245 and DE 10 2004 011 968 as being prebiotically effective; these include conifer extracts, in particular from the group of Pinaceae, and plant extracts from the group of Sapindaceae, Araliaceae, Lamiaceae and Saxifragaceae, in particular extracts from Picea spp., Paullinia sp., Panax sp., Lamium album or Ribes nigrum and mixtures of these substances.

Further preferred deodorizing active ingredients are selected from the germ-inhibiting perfume oils and the Deosafe perfume oils, which are available from Symrise, formerly Haarmann and Reimer. Deodorizing enzyme inhibitors are substances which inhibit the enzymes responsible for the sweat decomposition, in particular arylsulfatase, β-glucuronidase, aminoacylase, ester-cleaving lipases and lipoxygenase, trialkyl citric acid esters, in particular triethyl citrate, or zinc glycinate being extraordinarily preferred. Extremely preferred deodorizing agents are selected from the fragrance mixtures Protectate HR and Protectate MOD 2 from Symrise, phenoxyethanol, farnesol, α- (2-ethylhexyl) glycerol ether, glycerol monolaurate, diglycerol monocaprinate, triethyl citrate, conifer extracts from the group of Pinaceae, plant extracts from the Group of Sapindaceae, Araliaceae, Lamiaceae and Saxifragaceae, the Deosafe perfume oils from Symrise, as well as mixtures of these substances. Surprisingly, it has been found that these deodorizing agents in combination with skin-cooling agents, in particular mixtures of the three components menthol propylene glycol carbonate, menthol ethylene glycol carbonate and menthol, and the oils used according to the invention show a particularly long-lasting deodorant performance and / or a particularly long-lasting freshness.

Preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one deodorizing agent in a total amount of 0.1-10 wt.%, Preferably 0.2-7 wt.%, In particular 0.3-5 wt most preferably 0.4 to 1.0% by weight, based on the total weight of the composition.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one encapsulated and / or at least one non-encapsulated fragrance.

The encapsulation of the skin-cooling active ingredients and / or of the fragrances can preferably be selected such that it comprises at least one water-soluble encapsulation material. Under the influence of moisture, here in particular under the influence of skin moisture or perspiration, the water-soluble encapsulation material opens a certain time after application, and the encapsulated perfume and possibly other encapsulated active ingredients, for example skin-cooling agents, are released after a time delay.

Encapsulated and non-encapsulated fragrances, for example perfume oils or perfume oil mixtures, may be identical or different. Particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one encapsulated and at least one non-encapsulated fragrance which are different from each other.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one non-encapsulated fragrance in a total amount of 0.1-3% by weight, preferably 0.2-1.5% by weight and more preferably 0.4-1% by weight %, in each case based on the total weight of the aerosol composition.

Further particularly preferred deodorant aerosol compositions according to the invention are characterized in that they contain at least one encapsulated fragrance in a total amount of 0.01-2% by weight, preferably 0.1-1.0% by weight and more preferably 0.25-0.5 % By weight, based in each case on the total weight of the aerosol composition.

In a further particularly preferred embodiment of the invention, the encapsulated perfume and the encapsulated skin-cooling active ingredient are encapsulated together as a mixture. However, it is also possible for both components to be encapsulated separately next to one another. In a preferred embodiment of the invention, perfume and skin-cooling active ingredient are encapsulated together as a mixture.

The weight ratio of encapsulated perfume and encapsulated skin-cooling active ingredient according to the invention is preferably from 10: 1 to 1:10.

As fragrances or perfume oils fragrance compounds are particularly preferred, for. As the synthetic products of the ester type, ethers, aldehydes, ketones, alcohols and hydrocarbons are used. The preferred phenolic fragrance compounds include, for. B. carvacrol. Preferred fragrance compounds of the ester type are e.g. Benzyl acetate, methyl anthranilate, ortho-t-butylcyclohexyl acetate, p-tert-butylcyclohexyl acetate, diethyl phthalate, nonanediol-1,3-diacetate, isononyl acetate, isononyl formate, phenylethyl phenylacetate, phenoxyethyl isobutyrate, linalyl acetate, dimethylbenzylcarbinyl acetate, phenylethyl acetate , Linalyl benzoate, benzyl formate, ethylmethylphenyl glycinate, allyl cyclohexyl propionate, styrallyl propionate, benzyl salicylate, ethyl salicylate, iso-amyl salicylate, hexyl salicylate and 4-nonanolide. The preferred ethers include, for example, benzyl ethyl ether, to the preferred aldehydes z. B. the linear alkanals having 8 to 18 carbon atoms, citral, citronellal, citronellyloxyacetaldehyde, cyclamen aldehyde, hydroxycitronellal, lilial and bourgeonal, to the preferred ketones z. 6-acetyl-1, 1,3,4,4,6-hexamethyltetrahydronaphthalene, para-t-amylcyclohexanone, 2-n-heptylcyclopentanone, β-methylnaphthyl ketone and the ionones α-isomethylionone and methyl cedryl ketone, for example preferred alcohol cinnamyl alcohol, anethole, citronellol, dimyrcetol, eugenol, geraniol, linalool, phenylethyl alcohol and terpineol, the preferred hydrocarbons include 1, 3,4,6,7,8-hexahydro-4,6,6,7,8, 8-hexamethylcyclopenta-a-2-benzopyran, hydroxymethylisopropylcyclopentane, 3-a-methyldodecahydro-6,6,9a-trimethylnaphtho-2 (2,1-b) furan, iso-butylquinoline, and the terpenes and balsams. Particular preference is given to using mixtures of different fragrances which together produce an attractive fragrance.

Particularly preferred perfume oils may also contain natural fragrance mixtures such as are available from plant or animal sources, e.g. Pine, citrus, jasmine, ylang-ylang, rose, or lily oil. Also essential oils of lower volatility, which are mostly used as aroma components, are particularly preferred as perfume oils, for. B. sage oil, camomile oil, lemon balm oil, mint oil, cinnamon leaf oil, lime blossom oil, juniper berry oil, vetiver oil, Olibanöl, galbanum oil, Laudanumöl, clove oil, iso-eugenol, thyme oil, rose oil, bergamot oil and geranium oil.

Preferred capsule material are water-soluble polymers such as starch, physically and / or chemically modified starches, cellulose derivatives, such as. As carboxymethylcellulose, methylcellulose, hydroxyethylcellulose or hydroxypropylmethylcellulose, Carra- gheene, alginates, maltodextrins, dextrins, vegetable gums, pectins, xanthans, polyvinyl acetate and polyvinyl alcohol, polyvinylpyrrolidine, polyamides, polyesters and homo- and copolymers of monomers selected from acrylic acid , Methacrylic acid, maleic acid, fumaric acid, itaconic acid and the esters and the salts of these acids, as well as any mixtures of these polymers.

Particularly preferred capsule materials are chemically modified starches, especially aluminum starch octenyl succinate, e.g. For example, the commercial product Dry FIo Plus from National Starch, or sodium starch octenylsuccinate, e.g. The commercial product Tylose H 10 from Clariant, furthermore the carboxymethylcellulose, carboxymethylcellulose, methylcellulose, hydroxyethylcellulose and hydroxypropylmethylcellulose, furthermore carrageenans, alginates and maltodextrins, as well as any mixtures of these polymers. Particularly preferred capsule materials are polymer blends which consist of chemically modified starches and / or hydroxyethyl cellulose and a proportion of 0.2-2% by weight of alginates and / or carrageenans.

The encapsulation can be carried out by known methods. Corresponding methods are for. As disclosed in K. Master, Spray Drying Handbook, 3rd Ed., John Wiley, 1979. In a particularly preferred encapsulation process, a mixture is applied to water. about 20 to 50% by weight of the polymeric encapsulating material, about 0.1 to 2.0% by weight of an emulsifier, about 5 to 20% by weight of the encapsulated perfume oil and / or the encapsulated skin-cooling active substance and about 40 to 60 wt.% Water. This mixture is homogenized and then spray-dried. The active substance-loaded capsules are thus obtained as a fine powder having a particle diameter of 1 to 150 μm, preferably 20 to 80 μm, particularly preferably 5 to 50 μm.

In another manufacturing method, the microencapsulation is carried out by coacervation, wherein the carrier is preferably formed from gelatin.

The capsule material, consisting of water-soluble polymers and a low content of emulsifiers, allows a reversible "re-encapsulation" of the encapsulated perfume oils and skin-cooling agents. The re-encapsulation occurs in situ during drying of the skin following a perspiration period. Thus, various, successive activations occur on the skin, without the user having to make a further application of the agent according to the invention.

Fragrance- or perfume-free deodorant aerosol compositions may be preferred in the present invention.

The compositions according to the invention contain ethanol, isopropanol and / or propanol in total amounts of less than 0.5% by weight, based on the total aerosol composition. Preferred deodorant aerosol compositions according to the invention are characterized in that they contain less than 0.2% by weight, particularly preferably 0% by weight of ethanol, isopropanol, 1-propanol and / or 2-propanol, in each case based on the total aerosol composition.

Particularly preferred aerosol deodorant compositions of the present invention are characterized by being substantially anhydrous, i. that is, they contain 0 or at most 2% by weight of water, based on the total aerosol composition.

Further particularly preferred deodorant aerosol compositions according to the invention are characterized in that they are present as a water-in-oil emulsion or as an oil-in-water emulsion. The water content is 5 to 90 wt .-%, preferably 10 to 80 wt .-%, particularly preferably 30 to 60 wt .-%, each based on the weight of the propellant-free emulsion.

Preferred deodorant aerosol compositions according to the invention are characterized in that the at least one propellant gas is selected from n-propane, n-butane, isobutane, n-pentane, isopentane, dimethyl ether, carbon dioxide, nitrous oxide, fluorocarbons and chlorofluorocarbons and mixtures of these substances.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that the at least one propellant gas in total amounts of 20-95 wt.%, Particularly preferably 30-95 wt.% And most preferably 60-95 wt.%, Each based on the total aerosol composition is.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that the weight ratio of oil and skin-cooling, deodorizing and optionally further active substances dissolved or dispersed therein to the propellant gas in the compositions according to the invention is preferably 50:50 to 5:95, particularly preferably 30:70 to 10:90 is.

Particularly preferred deodorant aerosol compositions according to the invention are characterized in that at least one antiperspirant active ingredient is present. Antiperspirant active ingredients preferred according to the invention are the water-soluble astringent inorganic and organic salts of aluminum, zirconium and zinc or any desired mixtures of these salts. Particularly preferred antiperspirant active ingredients are selected from the aluminum chlorohydrates, for example Aluminiumiumses- quichlorhydrat, Aluminiumchlorhydrex-propylene glycol (PG) or polyethylene glycol (PEG), Aluminiumiumsesquichlorhydrex-PG or -PEG, aluminum-PG-dichlorhydrex or aluminum-PEG-dichlorhydrex, aluminum hydroxide further selected from the Aluminiumzirconiumchlorhydraten as Aluminiumzirconiumtrichlorhydrat, zirconium tetrachlorohydrate, aluminum, Aluminiumzirconiumpentachlorhydrat, octachlorohydrate Aluminiumzirconium-, the aluminum-zirconium chlorohydrate glycine complexes, such as aluminum niumzirconiumtrichlorhydrexglycin, Aluminiumzirconiumtetrachlorhydrexglycin, aluminum niumzirconiumpentachlorhydrexglycin, Aluminiumzirconiumoctachlorhydrexglycin, potassium aluminum sulfate (KAI (SO ₄ J ₂ ^{■ 12H} ₂ O, alum), aluminum undecylenoyl collagen amino acid, sodium aluminum lactate + aluminum sulphate, sodium aluminum chlorhydroxylactate, alumina sodium bromide hydrate, aluminum chloride, the complexes of zinc and sodium salts, the complexes of lanthanum and cerium, the aluminum salts of lipoamino acids, aluminum sulfate, aluminum lactate, aluminum chlorohydrate, sodium aluminum chlorhydroxylactate, zinc chloride, zinc sulfocarbolate, zinc sulfate and zirconium chlorohydrate. According to the invention has a solubility of at least 5 wt .-% at 20 ⁰ C is understood to mean water solubility, that is, amounts of at least 5 g of the antiperspirant active ingredient in 95 g of water at 20 ⁰ C are soluble. The antiperspirant active ingredients can be used as aqueous solutions. Particularly preferred deodorant aerosol compositions according to the invention are characterized in that the at least one antiperspirant active ingredient is present in a total amount of 3 to 25% by weight, preferably 5 to 22% by weight and in particular 10 to 20% by weight on the weight of the active substance in the total composition. In a preferred embodiment, the composition comprises an astringent aluminum salt, especially aluminum chlorohydrate, for example, in powder form as Micro Dry ^® Ultrafine from Reheis, is sold as ^® and Chlorhydrol in activated form as Reach ^® 501 from Reheis.

Further preferred deodorant aerosol compositions according to the invention are characterized in that at least one suspension or thickener selected from hydrophobized clay minerals and pyrogenic silicic acids is contained. Preferred hydrophobized clay minerals are montmorillonites, hectorites and bentonites, in particular disteardimonium hectorites and quaternium-18 hectorites. The commercial thickeners provide these hydrophobic clay minerals in the form of a gel in Cyclomethicone and, if desired, an additional oil component such. As propylene carbonate, ready. Further preferred thickeners are fumed silicas, eg. For example, the commercial products of the Aerosil ^® series from Degussa.

The compositions of the invention are preferably in commercial

Aerosol cans packed. The cans can be tinplate or aluminum.

Furthermore, according to a particularly preferred embodiment, the cans may be internally coated in order to minimize the risk of corrosion.

The aerosol cans are preferably equipped with a suitable spray head. Depending on

Spray head ejection rates, based on fully filled cans, from 0.1 g / s to 2.0 g / s are preferred. The following examples are intended to illustrate the invention without limiting it thereto.

Example compositions according to the invention (all amounts in% by weight)

The compositions 1-5 were filled in internally coated tinplate cans, the compositions 6-10 in internally coated aluminum cans.

Claims

claims

A deodorant aerosol composition comprising a) at least one oil selected from the esters of linear or branched saturated or unsaturated fatty alcohols having from 2 to 30 carbon atoms with linear or branched saturated or unsaturated fatty acids having from 2 to 30 carbon atoms which may be hydroxylated Benzoic acid esters of linear or branched Cβ- _22- alkanols, the C ₈ -C ₂₂ fatty alcohol esters of monohydric or polyhydric C ₂ -C ₇ hydroxycarboxylic acids, branched saturated or unsaturated fatty alcohols having 6 to 30 carbon atoms, dicarboxylic acid esters of linear or branched C ₂ -Cio Alkanols, di-n-alkyl ethers having a total of 12 to 36 carbon atoms, b) at least one skin-cooling active ingredient, c) at least one deodorizing agent, d) at least one propellant, wherein ethanol, isopropanol, 1-propanol and / or 2-propanol Total amounts of less than 0.5 wt .-% are included.

2. Composition according to claim 1, characterized in that the at least one ester of linear or branched saturated or unsaturated fatty alcohols having from 2 to 30 carbon atoms with linear or branched saturated or unsaturated fatty acids having from 2 to 30 carbon atoms, which may be hydroxylated, is selected from 2-ethylhexyl palmitate, hexyldecyl stearate, hexyldecyl, Isode- cylneopentanoat, isononyl isononanoate, 2-ethylhexyl stearate, isopropyl myristate, isopropyl pylpalmitat, nonyl stearate isopropyl stearate, isopropyl isostearate, isopropyl oleate, isooctyl stearate, isopropyl, isononanot isocetyl stearate, isononyl isononanoate, isotridecyl isononanoate, cetearyl, 2-ethylhexyl laurate, 2-ethylhexyl isostearate, 2-ethylhexyl cocoate, 2-octyldodecyl palmitate, butyloctanoic acid 2-butyloctanoate, diisotridecyl acetate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, ethylene glycol dioleate and dipalmitate, and Mixtures thereof ,

3. The composition according to claim 1, characterized in that the at least one benzoic acid ester of linear or branched C _8-22 alkanols is selected from C ₁₂ -C ₁₅ alkyl benzoates, isostearyl benzoate and ethylhexyl benzoate and mixtures thereof.

4. The composition according to claim 1, characterized in that the at least one C ₈ -C ₂₂ fatty alcohol ester of monohydric or polyhydric C ₂ -C ₇ hydroxycarboxylic acids is selected from the C ₈ -C ₂₂ fatty alcohol esters of glycolic acid, lactic acid, malic acid , Tartaric acid, citric acid and salicylic acid and mixtures thereof.

5. The composition according to claim 1, characterized in that the at least one branched saturated or unsaturated fatty alcohol having 6 to 30 carbon atoms is selected from hexyldecanol, octyldodecanol and 2-ethylhexylalcohol and mixtures thereof.

6. The composition according to claim 1, characterized in that the at least one dicarboxylic acid ester of linear or branched C ₂ -C ₁ o-alkanols is selected from diisopropyl adipate, di-n-butyl adipate, di- (2-ethylhexyl) adipate, dioctyl adipate, diethyl - / di-n-butyl / dioctyl sebacate, diisopropyl sebacate, dioctyl malate, dioctyl maleate, dicaprylyl maleate, diisooctyl succinate, di-2-ethylhexyl succinate and di- (2-hexyldecyl) succinate and mixtures thereof.

7. The composition according to claim 1, characterized in that the at least one di-n-alkyl ether having a total of 12 to 36 carbon atoms is selected from di-n-octyl ether, di-n-decyl ether, n-hexyl n-octyl ether and n- Octyl n-decyl ether and mixtures thereof.

8. Composition according to one of the preceding claims, characterized in that the at least one skin-cooling active ingredient is selected from menthol, isopulegol and menthol derivatives, preferably menthyl lactate, menthol propylene glycol carbonate, menthol ethylene glycol carbonate, menthylpyrrolidonecarboxylic acid, menthyl methyl ether, menthoxypropanediol, menthone glycerol acetal (9-methyl-6-) (1-methylethyl) -1, 4-dioxaspiro (4.5) decane-2-methanol), monomenthyl succinate, menthyl glycolate and 2-hydroxymethyl-3,5,5-trimethylcyclohexanol and mixtures thereof.

9. Composition according to one of the preceding claims, characterized in that the at least one deodorizing active ingredient is selected from odor absorbers, deodorizing ion exchangers, germ-inhibiting Active substances, prebiotic active components, inhibitors of the enzymes responsible for the sweat decomposition or, more preferably, combinations of these active substances.

10. The composition according to any one of the preceding claims, characterized in that at least one encapsulated skin-cooling agent is included.

11. Composition according to one of the preceding claims, characterized in that at least one encapsulated fragrance and / or at least one non-encapsulated fragrance is contained.

12. The composition according to claim 11, characterized in that at least one encapsulated fragrance and at least one non-encapsulated fragrance is contained, which are different from each other.

Composition according to any one of the preceding claims, characterized in that it contains 0% by weight of ethanol, isopropanol, 1-propanol and / or 2-propanol, relative to the total aerosol composition.

14. A composition according to any one of the preceding claims, characterized in that it contains 0 or at most 2 wt.% Water, based on the total aerosol composition.

15. A composition according to any one of the preceding claims, characterized in that further at least one antiperspirant active ingredient is included.

16. A composition according to any one of the preceding claims, characterized in that further at least one thickener selected from hydrophobized clay minerals and fumed silicas, is included.

17. A composition according to any one of claims 1-9, 13, 15 or 16, characterized in that it is present as a water-in-oil emulsion or as an oil-in-water emulsion.