DE102014223166A1 - Foamable O / W emulsion - Google Patents

Abstract

Cosmetic oil-in-water emulsion (O / W emulsion) having a viscosity of less than 250 mPas, containing a) sodium stearoyl glutamate (INCI Sodium Stearoyl Glutamate), b) myristyl alcohol, c) one or more 1,2-alkanediols with a carbon chain of 4 to 10 carbon atoms, which contains no surfactants with an HLB value of more than 14.

Description

The present invention relates to an oil-in-water cosmetic emulsion (O / W emulsion) having a viscosity of less than 250 mPas containing sodium stearoyl glutamate (INCI Sodium Stearoyl Glutamate), myristyl alcohol, one or more carbon-chain 1,2-alkanediols from 4 to 10 carbon atoms, which is characterized in that it contains no surfactants with an HLB value of more than 14.

The desire to look beautiful and attractive is inherently rooted in man. Although the ideal of beauty has undergone changes over time, the pursuit of an impeccable appearance has always been the goal of man. An essential part of a beautiful and attractive appearance is the condition and appearance of the skin.

Skin care products usually consist of emulsions. Emulsions are generally understood to mean heterogeneous systems which consist of two liquids which are immiscible or only slightly miscible with one another, which are usually referred to as phases, and in which one of the two liquids is dispersed in the form of very fine droplets in the other liquid. Viewed externally and with the naked eye, emulsions appear homogeneous.

If the two liquids are water and oil and oil droplets are finely distributed in water, then it is an oil-in-water emulsion (O / W emulsion, eg milk). The basic character of an O / W emulsion is characterized by the water. A water-in-oil emulsion (W / O emulsion, eg butter) is the reverse principle, with the basic character being determined by the oil.

However, the large number of commercially available cosmetic emulsions must not obscure the fact that the preparations of the prior art have a number of disadvantages.

A specific group of emulsions are foamable emulsions, i. Preparations which can be foamed to a foam with the aid of mechanical piston pumps and air or propellant gas. Such preparations must be particularly thin in order to be able to be conveyed out of the storage container by the foam applicator (aerosol can or pump ooamer) and to foam. Foaming surfactants having an HLB of greater than 20, as known from cleaning products, must also be added to the prior art formulations to foam. These surfactants usually have a significantly higher skin irritation potential than emulsifiers, which is generally not critical for cleansing products (rinse-off products), but is of importance for products remaining on the skin over an extended period of time (leave-on products). Due to the surfactant content and the requirement of a low viscosity of the preparation (which is usually associated with a low emulsifier content), the emulsions of the prior art are usually not very stable in storage and temperature. It comes regularly to the separation of water from the preparation.

It was therefore the object of the present invention to eliminate the deficiencies of the prior art and to develop a readily foamable, surfactant-free, low viscosity O / W emulsion.

• a) Natriumstearoylglutamat (INCI Sodium Stearoyl Glutamate),
• b) Myristylalkohol,
• c) ein oder mehrere 1,2-Alkandiole mit einer Kohlenstoffkette von 4 bis 10 C-Atomen,

die keine Tenside mit einem HLB-Wert von mehr als 14 enthält. Surprisingly, the object is achieved by a cosmetic oil-in-water emulsion (O / W emulsion) having a viscosity of less than 250 mPas, containing

• a) sodium stearoyl glutamate (INCI Sodium Stearoyl Glutamate),
• b) myristyl alcohol,
• c) one or more 1,2-alkanediols having a carbon chain of 4 to 10 carbon atoms,

which contains no surfactants with an HLB value greater than 14.

The viscosity according to the invention is measured as follows:
Measurement at 25 ° C in 150 ml rolled edge glass by means of Rheomat R123 from the company proRheo The Rheomat 123 from proRheo GmbH is a rotational viscometer, ie a measuring element rotates in the substance to be measured. It measures the force needed to rotate the sample in the sample at a given speed. From this torque, the speed of the measuring body and the geometric dimensions of the measuring system used, the viscosity is calculated. Measuring body no.3 (article number 200 0193), suitable for a viscosity range up to 1,000 [mPas], speed range 62.5 min ^-1 .

It is advantageous according to the invention if the preparation contains sodium stearoylglutamate (INCI Sodium Stearoyl Glutamate) in a concentration of 0.1 to 2% by weight, based on the total weight of the preparation.

It is preferred according to the invention if the preparation contains sodium stearoyl glutamate (INCI Sodium Stearoyl Glutamate) in a concentration of 0.1 to 1% by weight, based on the total weight of the preparation.

It is particularly preferred according to the invention if the preparation contains sodium stearoyl glutamate (INCI Sodium Stearoyl Glutamate) in a concentration of 0.2 to 0.7% by weight, based on the total weight of the preparation.

Embodiments of the present invention which are advantageous according to the invention are characterized in that the preparation contains myristyl alcohol in a concentration of 0.1 to 2% by weight, based on the total weight of the preparation.

Embodiments of the present invention which are preferred according to the invention are characterized in that the preparation contains myristyl alcohol in a concentration of 0.3 to 1% by weight, based on the total weight of the preparation.

Preferred 1,2-alkanediols having a carbon chain of 4 to 10 carbon atoms according to the invention are: 2-methylpropane-1,3-diol, 1,2-pentanediol, 1,2-hexanediol and 1,2-octanediol. Particularly preferred according to the invention is 1,2-hexanediol.

It is advantageous according to the invention if the preparation contains 1,2-alkanediols having a carbon chain of 4 to 10 carbon atoms in a total concentration of 0.1 to 3% by weight, based on the total weight of the preparation.

It is preferred according to the invention if the preparation contains 1,2-alkanediols having a carbon chain of 4 to 10 carbon atoms in a total concentration of 0.1 to 1.5% by weight, based on the total weight of the preparation.

The term "total concentration" here means the sum of individual concentrations of all 1,2-alkanediols containing a carbon chain of 4 to 10 carbon atoms. That if only one (or two) of these 1,2-alkanediols are contained in the emulsion, then the total concentration refers to this one (or these 2) 1,2-alkanediol (s).

Embodiments of the present invention which are advantageous according to the invention are characterized in that the content of fatty alcohols and waxes in the preparation (i.e., the total amount of all fatty alcohols and waxes) contains at most 1% by weight, based on the total weight of the preparation.

It is advantageous according to the invention if the preparation according to the invention contains microcrystalline cellulose and / or the sodium salt of carboxymethylcellulose (cellulose gum). According to the invention, the combination of microcrystalline cellulose and the sodium salt of carboxymethylcellulose (cellulose gum) is preferred.

It is inventively advantageous if the total concentration of microcrystalline cellulose and sodium salt of carboxymethylcellulose from 0.1 to 2% by weight, based on the total weight of the preparation, wherein the concentration range of 0.2 to 1% by weight based on the total weight of the preparation is preferred according to the invention.

The term "total concentration" here means the sum of the individual concentrations of microcrystalline cellulose and sodium salt of carboxymethylcellulose. That if only one of these substances is contained in the emulsion, then the total concentration refers to this one cellulose derivative.

Embodiments of the present invention which are advantageous according to the invention are characterized in that the preparation contains polyacrylate and / or acrylamide / ammonium acrylate copolymer (INCI acrylamide / ammonium acrylate copolymer). In this case, a combination of polyacrylate and acrylamide / ammonium acrylate copolymer (INCI acrylamide / ammonium acrylate copolymer) erfndungsgemäß preferred.

It is advantageous according to the invention if the preparation contains polyacrylate and acrylamide / ammonium acrylate copolymer (INCI acrylamide / ammonium acrylate copolymer) in a total concentration of 0.1 to 2% by weight, based on the total weight of the preparation.

It is preferred according to the invention if the preparation contains polyacrylate and acrylamide / ammonium acrylate copolymer (INCI acrylamide / ammonium acrylate copolymer) in a total concentration of 0.2 to 0.5% by weight, based on the total weight of the preparation.

The term "total concentration" means the sum of the individual concentrations of polyacrylate and acrylamide / ammonium acrylate copolymer. That if only one of these substances is contained in the emulsion, then the total concentration refers to this one polymer.

For the purposes of the present invention, emulsions which are characterized in that the preparation contains phenoxyethanol and / or ethylhexylglycerol are advantageous. In this case, phenoxyethanol is advantageously used according to the invention in a concentration of 0.1 to 2% by weight, based on the total weight of the preparation; Ethylhexylglycerol, if present, according to the invention advantageously used in a concentration of 0.3 to 1% by weight, based on the total weight of the preparation. Moreover, in certain embodiments of the present invention, it may also be advantageous if the emulsion according to the invention contains methylparaben.

According to the invention, however, the emulsion according to the invention is advantageously free from propyl and butyl paraben, methylisothiazolinones and 3-iodo-2-propynyl butylcarbamate.

It is inventively advantageous if the emulsion of the invention contains ethanol and / or glycerol.

If the emulsion contains glycerol, an application concentration of 0.1 to 15% by weight, based on the total weight of the emulsion, is advantageous according to the invention.

Advantageous embodiments of the present invention are also characterized in that the emulsion comprises one or more active ingredients selected from the group of the compounds UV filter, magnolia extract, glycyrrhetinic acid, urea, arctiin, alpha-lipoic acid, folic acid, panthenol, phytoene, D-biotin, coenzyme Q10, hyaluronic acid, alpha-glucosylrutin, carnitine, carnosine, caffeine, natural and / or synthetic isoflavonoids, glyceryl glucose, creatine, creatinine, taurine, tocopherol, cocoa extract, marine minerals, lotus extract, tocopherol acetate, β-alanine and / or licochalcone A.

UV filters which are advantageous according to the invention can be selected, for example, from the group of the compounds 2-phenylbenzimidazole-5-sulphonic acid and / or salts thereof; Phenylene-1,4-bis- (2-benzimidazyl) -3,3'-5,5'-tetrasulfonsäuresalze; 1,4-di (2-oxo-10-sulfo-3-bomylidenemethyl) benzene and its salts; 4- (2-oxo-3-bornylidenemethyl) benzenesulfonic acid; 2-methyl-5- (2-oxo-3-bornylidenemethyl) sulfonic acid salts; 2,2'-methylene-bis- (6- (2H-benzotriazol-2-yl) -4- (1,1,3,3-tetramethylbutyl) -phenol); 2- (2H-benzotriazol-2-yl) -4-methyl-6- [2-methyl-3- [1,3,3,3-tetramethyl-1 - [(trimethylsilyl) oxy] disiloxanyl] propyl] phenol ; 3- (4-methylbenzylidene) camphor; 3-benzylidenecamphor; ethylhexyl salicylate; Terephthalidendicamphersulfonsäure; 2-ethylhexyl-2-cyano-3,3-diphenylacrylate; 4- (dimethylamino) benzoic acid (2-ethylhexyl) ester; 4- (dimethylamino) benzoic acid amyl ester; 4-Methoxybenzalmalon-säuredi (2-ethylhexyl) ester; 4-methoxycinnamate (2-ethylhexyl) ester; Isoamyl 4-methoxycinnamate; 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone; 2,2'-dihydroxy-4-methoxybenzophenone; homomenthyl; 2-ethylhexyl 2-hydroxybenzoate; dimethicodiethylbenzalmalonate; 3- (4- (2,2-bisethoxycarbonylvinyl) phenoxy) propenyl) methoxysiloxane / dimethylsiloxane copolymer; 4- (tert-butyl) -4'-methoxydibenzoylmethane; 2- (4'-diethylamino-2'-hydroxybenzoyl) benzoate; Dioctylbutylamidotriazone (INCI: diethylhexyl-butamidotriazone); 2,4-bis- [5-1 (dimethylpropyl) benzoxazol-2-yl- (4-phenyl) -imino] -6- (2-ethylhexyl) -imino-1,3,5-triazine having the (CAS No 288254-16-0); 2,4-bis - {[4- (2-ethyl-hexyloxy) -2-hydroxy] -phenyl} -6- (4-methoxyphenyl) -1,3,5-triazine (INCI: bis-ethylhexyloxyphenol methoxyphenyl triazine) ; 4,4 ', 4 "- (1,3,5-triazine-2,4,6-triyltriimino) tris-benzoic acid tris (2-ethylhexyl ester) (also: 2,4,6-tris [anilino - (p-carbo-2'-ethyl-1'-hexyloxy)] - 1,3,5-triazine (INCI: ethylhexyl triazone); 2,4,6-tribiphenyl-4-yl-1,3,5- triazine; merocyanines; titanium dioxide; zinc oxide.

It is also advantageous for the purposes of the present invention if the oil phase of the emulsion comprises one or more oil components selected from the group consisting of the compounds caprylic / capric triglyceride, ethylhexyl stearate, almond oil, soybean oil, isopropyl palmitate, shea butter (Butyrospermum Parkii Butter), cocoa butter, Octyldodecanol, dicaprylyl ether, mineral oil (INCI Paraffinum liquidum), ethylhexyl stearate, dimethicone, C12-15 alkyl benzoate.

In addition, the oil phase and the water phase can be composed as usual in cosmetics and contain the usual ingredients for this purpose.

Also according to the invention is a foam applicator comprising a cosmetic O / W emulsion according to the invention. It is inventively preferred when the applicator is mechanically operated with a pump (Pumpfoamer).

The emulsion according to the invention is advantageously used according to the invention as a leave-on product. It is particularly preferably used according to the invention as a personal care emulsion or daily care product.

Examples

The following examples are intended to illustrate the present invention without limiting it. Unless indicated otherwise, all amounts, proportions and percentages are based on the weight and the total amount or on the total weight of the preparations. composition A B C D e F % % % % % % panthenol 1.30 0.75 0.5 Caprylic / Capric triglyceride 2.50 2.50 mineral oil 2.00 2.00 Ethylhexyl stearate 4.00 2.50 2.00 2.00 dimethicone 0.90 0.90 1.00 0.90 1.00 C12-15 alkyl benzoate 2.00 2.00 Butyrospermum Parkii butter 0.50 0.50 0.50 Dicaprylyl ether 4.00 Natriumstearoylglutamat 0.40 0.40 0.40 0.40 0.40 0.40 Tapioca strength 5.00 Perfume 0.35 0.35 0.35 0.35 0.35 0.35 glycerin 10.0 5.00 1.00 7.00 8.00 3, 00 Sodium hydroxide solution for pH adjustment (quantum satis) x x x x x x methylparaben 0.30 0.30 phenoxyethanol 0.80 0.50 0.80 0.50 0.50 0.80 Benzethonium Chloride 0.05 Caprylyl glycol 0.30 0.30 1,2-Hexanediol 1.00 0.70 1.00 1.00 Myristyl alcohol 0.10 0.50 0.20 0.50 0.50 0.20 Acrylates / C10-30 Alkyl Acrylate Crosspolymer 0.10 0.30 0.30 0.20 Carbomer 0.10 0.10 Microcrystalline Cellulose + Cellulose Gum 0.50 0.50 0.50 0.50 Acrylamide / ammonium acrylate copolymer + polyisobutene + water + polysorbate 20 + sorbitan isostearate 0.20 0.20 EDTA 0.20 0.1 0.2 Butyl methoxydibenzoylmethane 4.00 2.00 2.00 Phenylbenzimidazole sulfonic acid 2.00 1.00 1.00 Ethylhexyl salicylate 4.00 4.00 octocrylene 5.00 2.00 2.00 water ad. 100 ad. 100 ad. 100 ad. 100 ad. 100 ad. 100 Viscosity at 25 ° C in mPa · s 130 120 220 100 250 200

The formulas are foamable in the pressurized gas container with e.g. 6% propane / butane mixture with pressure level 2.7 bar or 3.0 to 3.5 bar.

In addition, the formulas are using a Pumpfoamers (see A. Arzhavitina, H. Steckel / International Journal of Pharmaceutics 394 (2010) 1-17 ) foamable.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited non-patent literature

• A. Arzhavitina, H. Steckel / International Journal of Pharmaceutics 394 (2010) 1-17 [0039]

Claims (15)

 Cosmetic oil-in-water emulsion (O / W emulsion) having a viscosity of less than 250 mPas, containing a) sodium stearoyl glutamate (INCI Sodium Stearoyl Glutamate), b) myristyl alcohol, c) one or more 1,2-alkanediols having a carbon chain of 4 to 10 C-atoms, which contains no surfactants having an HLB value of more than 14. Cosmetic O / W emulsion according to claim 1, characterized in that the preparation contains sodium stearoyl glutamate (INCI Sodium Stearoyl Glutamate) in a concentration of 0.1 to 2% by weight, based on the total weight of the preparation. Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the preparation contains myristyl alcohol in a concentration of 0.1 to 2% by weight, based on the total weight of the preparation. Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the preparation of 1,2-alkanediols having a carbon chain of 4 to 10 carbon atoms in a total concentration of 0.1 to 3% by weight, based on the total weight the preparation contains. Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the content of fatty alcohols and waxes in the preparation contains at most 1% by weight, based on the total weight of the preparation. Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the preparation contains microcrystalline cellulose and / or the sodium salt of carboxymethylcellulose (cellulose gum). Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the preparation contains polyacrylate and / or acrylamide / ammonium acrylate copolymer (INCI acrylamide / ammonium acrylate copolymer). Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the preparation polyacrylate and acrylamide / ammonium acrylate copolymer (INCI acrylamide / ammonium acrylate copolymer) in a total concentration of 0.1 to 2% by weight, based on the total weight the preparation contains. Cosmetic O / W emulsion according to any one of the preceding claims, characterized in that the total concentration of microcrystalline cellulose and sodium salt of the carboxymethylcellulose is from 0.1 to 2% by weight, based on the total weight of the preparation. Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the preparation contains phenoxyethanol and / or ethylhexylglycerol. Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the preparation emulsion is free of propyl and Butylparaben, Methylisothiazolinonen and 3-iodo-2-propinylbutylcarbamat. Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the preparation UV filter, magnolia extract, glycyrrhetinic acid, urea, arctiin, alpha-lipoic acid, folic acid, panthenol, phytoene, D-biotin, coenzyme Q10, hyaluronic acid, alpha Glucosylrutin, carnitine, carnosine, caffeine, natural and / or synthetic isoflavonoids, glyceryl glucose, creatine, creatinine, taurine, tocopherol, tocopherol acetate, cocoa extract, marine minerals, lotus extract, β-alanine and / or licochalcone A. Cosmetic O / W emulsion according to one of the preceding claims, characterized in that the oil phase of the emulsion contains one or more oil components selected from the group of the compounds caprylic / capric triglyceride, mineral oil (INCI Paraffinum liquidum), ethylhexyl stearate, dimethicone, C12-15 alkyl benzoate , Foam applicator comprising a cosmetic O / W emulsion according to one of the preceding claims. Foam applicator according to claim 13, characterized in that the applicator is operated mechanically with a pump (pump oozer).