EP1438103A1

EP1438103A1 - Betaine-containing cosmetics

Info

Publication number: EP1438103A1
Application number: EP02777256A
Authority: EP
Inventors: Rainer Kröpke; Boris Syskowsyi; Urte Koop; Andreas Bleckmann; Jens Nielsen
Original assignee: Beiersdorf AG
Current assignee: Beiersdorf AG
Priority date: 2001-10-04
Filing date: 2002-09-28
Publication date: 2004-07-21
Also published as: DE10148966A1; US20040258722A1; JP2005504837A; WO2003030992A1

Abstract

The invention relates to cosmetic and/or dermatological preparations containing a) polyols in a concentration of 5 to 50 wt. %, b) betaines in a concentration of 0.01 to 75 wt. %, respectively in relation to the total weight of the preparation, as well as optionally other active agents, auxiliaries and additives.

Description

Beiersdorf Aktiengesellschaft Hamburg

Betainhaltiqe cosmetics

The present invention relates to cosmetic and / or dermatological preparations containing polyols and betaines and their use.

The skin is the largest human organ. Among its many functions (for example for heat regulation and as a sensory organ), the most important is the barrier function that prevents the skin (and ultimately the entire organism) from drying out. At the same time, the skin acts as a protective device against the penetration and absorption of substances coming from outside. This barrier function is brought about by the epidermis, which as the outermost layer forms the actual protective cover against the environment. At around a tenth of the total thickness, it is also the thinnest layer of the skin.

The task of cosmetic skin care is to strengthen or strengthen the natural function of the skin as a barrier against environmental influences (e.g. dirt, chemicals, microorganisms) and against the loss of the body's own substances (e.g. water, natural fats, electrolytes) restore.

The aim of skin care is also to compensate for the loss of fat on the skin caused by daily washing. This is especially important when the natural regeneration ability is insufficient.

However, one of the most important tasks of skin care is to moisturize the skin. Classic skin moisturizers include polyols such as glycerin and sorbitol. However, other compounds such as ethoxylated polyols and hydrolyzed proteins are also used. In addition, components of the skin's natural moisturizing factor (NMF) are used, for example urea and certain amino acids. The most common is glycerin. A major disadvantage of the prior art is the negative sensory properties of cosmetic and / or dermatological preparations containing polyol. These usually feel sticky and greasy on the skin and make the corresponding products unattractive for the consumer. It was therefore the object of the present invention to eliminate or reduce the disadvantages of the prior art and to develop polyol-containing cosmetic and / or dermatological preparations whose sticky and greasy skin feel is reduced.

Surprisingly, the object is achieved by cosmetic and / or dermatological preparations containing a) polyols in a concentration of 5 to 50% by weight, b) betaines in a concentration of 0.01 to 75% by weight, in each case based on the total weight of the preparation , along with any other active ingredients, auxiliaries and additives.

A concentration of polyols of 5 to 20% by weight and in particular 5 to 15% by weight, in each case based on the total weight of the formulation, is particularly advantageous.

A particularly advantageous concentration of betaines is from 0.5 to 50% by weight and in particular from 3 to 15% by weight, in each case based on the total weight of the formulation.

These preparations are characterized by a pleasant, slightly sticky, slightly greasy skin feel without losing the good skin-moisturizing properties.

The betaine which is particularly preferred according to the invention is trimethylglycine; glycerol is used as the preferred polyol according to the invention.

Part of the invention is the use of betaines to reduce the stickiness of polyol-containing cosmetic and / or dermatological preparations.

The invention furthermore relates to the use of betaines to reduce the greasy skin feel of cosmetic and / or dermatological preparations containing polyol. In general, the use of betaines to improve the sensory properties of cosmetic and / or dermatological preparations is in accordance with the invention.

Furthermore, the use of betaines in cosmetic and / or dermatological preparations according to the invention to reduce the adherence of foreign particles, in particular sand, to skin treated with cosmetic and / or dermatological preparations.

The cosmetic and / or dermatological preparations according to the invention can be used according to the invention as a skin cream, face cream and / or body lotion and as a sunscreen.

It is of course known to the person skilled in the art that sophisticated cosmetic compositions are usually inconceivable without the customary auxiliaries and additives. The cosmetic preparations according to the invention can therefore contain cosmetic auxiliaries as are usually used in such preparations, e.g. Preservatives, bactericides, perfumes, vitamins, dyes, anti-foaming agents, thickeners, plasticizers, fats, oils, waxes or other usual components of a cosmetic formulation such as alcohols, polymers, foam stabilizers, electrolytes or organic solvents.

It is advantageous according to the invention to add UV filters to the preparations according to the invention. Oil-soluble UVA filters and / or UVB filters in the lipid phase and / or water-soluble UVA filters and / or UVB filters in the aqueous phase can be used.

Advantageous oil-soluble UVB filter substances include:

- 4-aminobenzoic acid derivatives, preferably 4- (dimethylamino) benzoic acid (2-ethylhexyl) ester, 4- (dimethylamino) benzoic acid amyl ester; Esters of benzalmalonic acid, preferably 4-methoxybenzalmalonic acid di (2-ethylhexyl) ester;

- Esters of cinnamic acid, preferably 4-methoxycinnamic acid (2-ethylhexyl) ester, 4-methoxycinnamic acid isopentyl ester;

- Derivatives of benzophenone, preferably 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone; Methylidene camphor derivatives, preferably 4-methylbenzylidene camphor, benzylidene camphor,

Symmetrically substituted triazines, preferably 4,4 ', 4 "- (1,3,5-triazine-2,4,6-triyltriimino) tris-benzoic acid tris (2-ethylhexyl ester), synonymously: 2,4,6- Tris- [anilino- (p-carbo-2 ^, -ethyl-1 '- hexyloxy)] - 1,3,5-triazine [UVINUL T 150 (BASF)],

Unsymmetrically substituted triazines, preferably 2,4-bis - {[4- (2-ethylhexyloxy) -2-hydroxy] phenyl} -6- (4-methoxyphenyl) -1, 3,5-triazine (INCI : Aniso triazine) and 2,4-bis- (p-aminobenzoic acid 2-ethylhexyl ester) -6- (p-aminobenzoic acid-N-1,1-dimethylethylamide) -

1, 3,5-triazine dioctylbutylamidotriazon (INCI: Dioctylbutamidotriazone).

Advantageous water-soluble UVB filter substances include:

- Sulfonic acid derivatives of 3-benzylidene camphor, e.g. 4- (2-oxo-3-bornylidene methyl) benzenesulfonic acid, 2-methyl-5- (2-oxo-3-bornylidene methyl) sulfonic acid and their salts,

- 2-phenylbenzimidazole-5-sulfonic acid and its salts [Eusolex 232 (Merck), Neo Heliopan Hydro (H&R), Parsol HS (Givaudan)].

The list of the UVB filters mentioned, which can additionally be used in the sense of the present invention, should of course not be limiting.

Advantageous UVA filters include:

- 1,4-phenylenedimethine camphorsulfonic acid derivatives such as e.g. 3,3 '- (1,4-phenylenedimethine) - bis- (7,7-dimethyl-2-oxobicyclo [2.2.1] -heptane-1-methamsulfonic acid and its salts

- Dibenzoylmethane derivatives, preferably 4-isopropyldibenzoylmethane, 4- (tert-butyl) -4'-methoxydibenzoylmethane

- Phenylene-1,4-bis (2-benzimidazyl) -3,3 ', 5,5'-tetrasulfonic acid and its sodium, potassium and triethanolammoium salts, in particular the disodium salt [Neo Heliopan AP (Haarmann & Reimer) ].

It may also be advantageous according to the invention to provide the preparations with further UVA and / or UVB filters, for example certain silicic acid derivatives such as 4-isopropylbenzyl salicylate, 2-ethylhexyl salicylate, octyl salicylate and homomenthyl salicylate. Further light protection filter substances which can advantageously be used according to the invention are ethylhexyl-2-cyano-3,3-diphenylacrylate (octocrylene), which is available from BASF under the name UVINUL® N 539, and 2,2'-methylene-bis- (6- ( 2H-benzotriazol-2-yl) -4- (1, 1, 3,3-tetramethylbutyl) phenol).

These further UV light protection filters which are advantageous according to the invention are preferably used in a concentration of 0.1 to 20% by weight, in particular in a concentration of 0.5 to 10% by weight, based on the total weight of the formulation.

According to the invention, the cosmetic and / or dermatological light protection formulations can be composed as usual and serve the cosmetic and / or dermatological light protection, furthermore for the treatment, care and cleaning of the skin and / or hair and as a make-up product in decorative cosmetics.

For use, the cosmetic and / or dermatological preparations according to the invention are applied to the skin and / or the hair in a sufficient amount in the manner customary for cosmetics.

The cosmetic and / or dermatological preparations can according to the invention

Contain pigments (for example TiO ₂ , ZnO, BaSO ₄ ) which have a coloring effect and / or can advantageously be used according to the invention as inorganic light protection filters.

Further auxiliaries according to the invention are fats, oils, waxes or other customary constituents of a cosmetic or dermatological formulation such as alcohols,

Polymers, foam stabilizers, electrolytes, organic solvents or silicone derivatives.

An additional level of antioxidants is generally preferred. According to the invention, all the antioxidants suitable or customary for cosmetic and / or dermatological applications can be used as favorable antioxidants.

The antioxidants are 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 DL-carnosine, D-carnosine, L-carnosine and their derivatives (eg anserine), carotenoids, Carotenes (e.g. α-carotene, ß-carotene, lycopene) and their de- derivatives, chlorogenic acid and its derivatives, lipoic acid and its derivatives (e.g. dihydroliponic acid), aurothioglucose, propylthiouracil and other thiols (e.g. thioredoxin, glutathione, cysteine, cystine, cystamine and their glycosyl, N-acetyl, methyl, ethyl) , Propyl, amyl, butyl and lauryl, palmitoyl, oleyl, γ-linoleyl, cholesteryl and glyceryl esters) and their salts, dilaurylthiodipropionate, distearylthiodipropionate, thiodipropionic acid and their derivatives (esters, ethers, peptides, lipids, Nucleotides, nucleosides and salts) as well as sulfoximine compounds (e.g. buthioninsulfoximines, homocysteine sulfoximine, buthioninsulfones, penta-, hexa-, heptathioninsulfoximine) in very low tolerable dosages (e.g. pmol to μmol / kg), also (metal) chelators (e.g. α- Hydroxy fatty acids, palmitic acid, phytic acid, laotoferrin), α-hydroxy acids (e.g. citric acid, lactic acid, malic acid), humic acid, bile acid, bile extracts, bilirubin, biliverdin, EDTA, EGTA and their derivatives, unsaturated fatty acids and their derivatives (e.g. γ-linolenic acid, linoleic acid, oleic acid), folic acid and their derivatives, ubiquinone and ubiquinol and their derivatives, vitamin C and derivatives (e.g. ascorbyl palmitate, Mg ascorbyl phosphate, ascorbyl acetate), tocopherols and derivatives (e.g. vitamin E-acetate), vitamin A and derivatives (vitamin A palmitate) as well as coniferyl benzoate of benzoin, rutinic acid and its derivatives, α-glycosylrutin, ferulic acid, furfurylidene glucitol, carnosine, butylated hydroxytoluene, butylated hydroxyanisole, nordihydroguanajarbaronic acid, nordihydroxy acid, nordihydric acid, nordihydroxy acid, nordihydroxy acid, nordihydroxy acid, nordihydroxy acid, nordihydroxy acid, nordihydroxychloride their derivatives, mannose and their derivatives, zinc and their derivatives (for example ZnO, ZnSO ₄ ) selenium and their derivatives (for example selenium methionine), stilbenes and their derivatives (for example stilbene oxide, trans-stilbene oxide) and the derivatives (salts, Esters, ethers, sugars, nucleotides, nucleosides, peptides and lipids) of these active ingredients.

The amount of the aforementioned antioxidants (one or more compounds) in the preparations is preferably 0.001 to 10% by weight, particularly preferably 0.05 to 7% by weight, in particular 0.5 to 5% by weight on the total weight of the preparation.

If vitamin E and / or its derivatives represent the antioxidant (s), it is advantageous to choose their respective concentrations from the range from 0.001 to 5% by weight, based on the total weight of the formulation.

If 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 to 5% by weight, based on the total weight of the formulation. to choose. In addition, selected recipes according to the invention are suitable, which e.g. B. known anti-wrinkle active ingredients such as flavone glycosides (especially α-glycosylrutin), coenzyme Q10, vitamin E and / or derivatives and the like, particularly advantageous for the prophylaxis and treatment of cosmetic or dermatological skin changes, such as z. B. occur during skin aging (eg wrinkles and fine lines). They are also advantageous against the appearance of dry or rough skin.

Any lipid phase that may be present can advantageously be selected from the following group of substances:

Mineral oils, mineral waxes

Oils, such as triglycerides of capric or caprylic acid, but preferably castor oil;

Fats, waxes and other natural and synthetic fat bodies, preferably

Esters of fatty acids with low C alcohols, e.g. with isopropanol, propylene glycol or glycerin, or esters of fatty alcohols with low C number alkanoic acids or with fatty acids;

benzoates;

Silicone oils such as dimethylpolysiloxanes, diethylpolysiloxanes, diphenylpolysiloxanes and

Mixed forms of it.

An oil phase of the emulsions, oleogels or hydrodispersions or lipodispersions for the purposes of the present invention is advantageously selected from the group of esters from saturated and / or unsaturated, branched and / or unbranched alkane carboxylic acids with a chain length of 3 to 30 carbon atoms and saturated and / or unsaturated, branched and / or unbranched alcohols with a chain length of 3 to 30 carbon atoms, from the group of the esters from aromatic carboxylic acids and saturated and / or unsaturated, branched and / or unbranched alcohols with a chain length of 3 to 30 carbon atoms atoms. Such ester oils can then advantageously be selected from the group of isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl oleate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, isooctyl stearate, isononyl stearate, isononylisononanoate, 2-ethylhexyl hexyl urate, 2-ethylhexyl hexyl urate Octyldodecyl palmitate, oleyl oleate, olerlerucate, erucyl oleate, erucylerucate as well as synthetic, semi-synthetic and natural mixtures of such esters, for example jojoba oil. Furthermore, the oil phase can advantageously be selected from the group of branched and unbranched hydrocarbons and waxes, the silicone oils, the dialkyl ethers, the group of saturated or unsaturated, branched or unbranched alcohols, and also the fatty acid triglycerides, especially the triglycerol esters of saturated and / or unsaturated, branched and / or unbranched alkane carboxylic acids with a chain length of 8 to 24, in particular 12 - 18 carbon atoms. The fatty acid triglycerides can, for example, advantageously be selected from the group of synthetic, semisynthetic and natural oils, for example olive oil, sunflower oil, soybean oil, peanut oil, rapeseed oil, almond oil, palm oil, coconut oil, palm kernel oil and the like.

Any mixtures of such oil and wax components can also be used advantageously for the purposes of the present invention. It may also be advantageous to use waxes, for example cetyl palmitate, as the sole lipid component of the oil phase.

The oil phase is advantageously selected from the group consisting of 2-ethylhexyl isostearate, octyldodecanol, isotridecyl isononanoate, isoeicosane, 2-ethylhexyl cocoate, C ₁₂ . _5- alkyl benzoate, caprylic-capric acid triglyceride, dicaprylyl ether, dicaprylyl carbonate, butylene glycol dicaprylate / dicaprate.

Mixtures of C ₁₂ i ₅ alkyl benzoate and 2-ethylhexyl isostearate, mixtures of C ₁₂ i ₅ alkyl benzoate and isotridecyl isononanoate and mixtures of C ₁₂ are particularly advantageous. -, _5- Alkylbenzoate, 2-ethylhexyl isostearate and isotridecyl isononanoate.

Of the hydrocarbons, paraffin oil, squalane and isoparaffin can be used advantageously for the purposes of the present invention.

The oil phase can advantageously also have a content of cyclic or linear silicone oils or consist entirely of such oils, although it is preferred to use an additional content of other oil phase components in addition to the silicone oil or the silicone oils.

Cyclomethicone (octamethylcyclotetrasiloxane) or dimethicone is advantageously used as the silicone oil to be used according to the invention. But other silicone oils are also to be used advantageously for the purposes of the present invention, for example hexamethylcyclotrisiloxane, polydimethylsiloxane, poly (methylphenylsiloxane).

Mixtures of cyclomethicone and isotridecyl isononanoate, of cyclomethicone and 2-ethylhexyl isostearate are also particularly advantageous.

The aqueous phase of the preparations according to the invention advantageously advantageously contains - alcohols, diols or polyols of low C number, and their ethers, preferably ethanol,

Isopropanol, propylene glycol, glycerin, ethylene glycol, ethylene glycol monoethyl or monobutyl ether, propylene glycol monomethyl, monoethyl or monobutyl ether, diethylene glycol monomethyl or monoethyl ether and similar products, furthermore low C number alcohols, e.g. Ethanol, isopropanol, 1, 2-propanediol, glycerol and in particular one or more thickeners, which one or more can advantageously be selected from the group consisting of silicon dioxide, aluminum silicates, polysaccharides or their derivatives, e.g. Hyaluronic acid, xanthan gum, hydroxypropylmethyl cellulose, particularly advantageously from the group of polyacrylates, preferably a polyacrylate from the group of so-called carbopols, for example carbopoles of types 980, 981, 1382, 2984, 5984, each individually or in combination.

The cosmetic and / or dermatological preparations according to the invention can advantageously be used according to the invention in O / W emulsions in and in emulsifier-free O / W emulsions (hydrodispersions).

The following examples are intended to illustrate the present invention without restricting it. Unless otherwise stated, all quantities, parts and percentages are based on the weight and the total amount or on the total weight of the emulsion. W / O emulsions,

W / Q emulsions

W / S-emulsion

W / S emulsions

Oil-in-water emulsion

Oil-in-water emulsions

Claims

claims

1. Cosmetic and / or dermatological preparations containing a) polyols in a concentration of 5 to 50% by weight, b) betaines in a concentration of 0.01 to 75% by weight, in each case based on the total weight of the preparation, in addition, if appropriate other active ingredients, auxiliaries and additives.

2. Preparations according to claim 1, characterized in that trimethylglycine is used as betaine.

3. Preparations according to one of claims 1 or 2, characterized in that glycerol is used as the polyol.

4. Use of betaines according to one of the preceding claims to reduce the stickiness of polyol-containing cosmetic and / or dermatological preparations.

5. Use of betaines according to one of the preceding claims for reducing the greasy skin feeling of polyol-containing cosmetic and / or dermatological

Preparations.

6. Use of betaines according to one of the preceding claims to improve the sensory properties of cosmetic and / or dermatological preparations.

7. Use of betaines in cosmetic and / or dermatological preparations according to one of the preceding claims for reducing the adherence of foreign particles, in particular sand, to skin treated with cosmetic and / or dermatological preparations.

8. Use of cosmetic and / or dermatological preparations according to one of the preceding claims as a skin cream, face cream and / or body lotion.

9. Use of cosmetic and / or dermatological preparations according to one of the preceding claims as a sunscreen.