EP2654691A2

EP2654691A2 - Active ingredient combinations of glyceryl glucosides and one or more acidic preservatives

Info

Publication number: EP2654691A2
Application number: EP11807646.2A
Authority: EP
Inventors: Rainer Kröpke; Christian Frese; Cathrin Scherner; Svenja Lena Möllgaard; Sven Fey
Original assignee: Beiersdorf AG
Current assignee: Beiersdorf AG
Priority date: 2010-12-23
Filing date: 2011-11-28
Publication date: 2013-10-30
Also published as: US9314651B2; WO2012084418A3; WO2012084418A2; US20140005130A1; DE102010055838A1

Abstract

Disclosed are active ingredient combinations of (i) acidic preservatives and (ii) one or more glyceryl glucosides.

Description

Beiersdorf Aktiengesellschaft

description

Drug combinations of glucosylglycerides and one or more acidic

preservatives

The present invention relates to active ingredient combinations of glucosylglycerides and one or more acidic preservatives and their use in the field of cosmetic and pharmaceutical dermatology.

In particular, the present invention relates to active ingredients and cosmetic or dermatological preparations containing such drug combinations.

The present invention preferably relates to washing-active cosmetic preparations.

The outermost layer of the epidermis, the stratum corneum (hom layer), is of particular importance as an important barrier layer, inter alia. for protection against environmental influences and dehydration. The horny layer is constantly worn in contact with the environment and must therefore be renewed continuously.

A skin model widely used today in the art understands the stratum corneum as a two-component system, similar to a brick wall (brick-mortar model). In this model, the corneocytes (horny cells) correspond to the bricks, the complex composite lipid membrane in the intercellular spaces corresponds to the mortar.

In addition to their barrier effect against external chemical and physical influences, the epidermal lipids also contribute to the cohesion of the horny layer and have an influence on the skin smoothness. In contrast to the sebaceous gland lipids, which do not form a closed film on the skin, the epidermal lipids are distributed over the entire horny layer. The extremely complex interaction of the moisture-binding substances and the lipids of the upper skin layers is very important for the regulation of skin moisture. Therefore, cosmetics usually contain, in addition to balanced lipid mixtures and water, water-binding substances. These include polyols such as glycerin, sorbitol and xylitol, ethoxylated polyols and hydrolyzed proteins. Other uses include those contained in the natural moisturizing factor (so-called Natural Moisturizing Factor = NMF), such as urea, carbohydrates (eg glucose) and amino acids (eg serine). These substances are therefore of particular importance for the care performance of a cosmetic product, in particular because of their relatively good skin and mucous membrane compatibility.

The desire for clean skin is probably as old as humanity, because dirt, sweat and remains of dead skin particles provide the ideal breeding ground for pathogens and parasites of all kinds. The desire for personal hygiene was steadily increased, as in the 60s of the 20th century In addition to the "classic" soap and liquid detergents could be formulated with newly developed synthetic surfactants. Since then, bathing and showering have become indispensable in our daily lives. Consumers today have a variety of products available for cleaning the various body parts.

Cleaning means the removal of (environmental) dirt and thus causes an increase in mental and physical well-being. Cleaning the surface of the skin and hair is a very complex process, depending on many parameters. On the one hand, substances coming from outside such as, for example, hydrocarbons or inorganic pigments from a wide variety of environments as well as residues of cosmetics or undesired microorganisms should be removed as completely as possible. On the other hand, the body's excretions such as sweat, sebum, dandruff and hair dandruff are to be washed off without profound interventions in the physiological balance.

There is a high demand for the preservation of cosmetic preparations, since on the one hand sufficient preservation must be ensured to protect the formulation against bacterial attack, on the other hand negative influences of the preservatives on the compatibility, stability and sensory properties. Shocks of the formulation must be prevented. The preservatives must therefore be effective, toxicologically safe, well tolerated by the skin, stable formulatable and inexpensive to produce.

While a variety of preservatives, such as formaldehyde scavengers, parabens, phenols and their derivatives, bisguanidines, and halogenated compounds, have high antimicrobial efficacy, they can cause skin irritation and allergic reactions, and are therefore viewed critically by consumers and are believed to be undesirable.

A class of preservatives which are characterized by good compatibility are organic acids which are effective as preservatives, especially salicylic acid, benzoic acid, propionic acid, dehydroacetic acid (3-acetyl-6-methyl-2H-pyran-2,4 (3H) -dione) and sorbic acid, or their physiologically acceptable water-soluble metal salts.

A disadvantage of these preservatives is the fact that they are effective only in comparatively high concentrations and at acidic pH values. This complicates or limits the incorporation of the acids into the preparations. Furthermore, the required concentrations lead to an impairment of the sensory properties and have an adverse effect on the stability of the formulation.

There is therefore a need for preparations which overcome the disadvantages of the prior art.

It was surprising and unpredictable after all this drug combinations

(i) one or more acidic organic acids effective as preservatives

and

(ii) one or more glucosylglycerides

or cosmetic preparations containing such combinations of active substances, eliminate the disadvantages of the prior art. It has surprisingly been found that combinations of organic acid preservatives with glucosylglycerides can overcome the disadvantages of the prior art. These preparations are distinguished by good antimicrobial activity, good skin tolerance and excellent sensory properties in comparison with preparations of the prior art. Furthermore, these preparations have better stability.

Preferred preservatives effective organic acids are salicylic acid, benzoic acid, propionic acid, dehydroacetic acid (3-acetyl-6-methyl-2H-pyran-2,4 (3H) -dione) and sorbic acid. Particularly preferred are salicylic acid, benzoic acid and dehydroacetic acid. Particularly preferred are salicylic acid and benzoic acid. Also preferred is the use of physiologically acceptable water-soluble metal salts of these acids.

Preferred concentration of the preservatives is 0.0001 to 10%, more preferably 0.005-5%, most preferably 0.01% - 3%.

Furthermore, the rinse-off preparations contain surfactants, thickeners, preservatives, perfume, oils and possibly other cosmetic ingredients.

For the purposes of the present invention, glucosylglycerides of the general formula are advantageous

and / or the general formula

are preferred according to the invention.

According to the invention, those preparations are particularly advantageous, which are characterized in that the glucosylglyceride or in the water and / or oil phase in concentrations of 0.001 to 40.00 wt .-%, preferably 0.005 to 15.00 wt .-%, especially preferably 0.01 to 12.00 wt .-%, each based on the total weight of the composition.

It is advantageous according to the invention, the molar ratio of one or more glucosylglycerides to one or more acidic preservative effective organic acids is from the range of 100: 1 to 1: 100, preferably 50: 1 to 1: 50, particularly preferably 20: 1 to 1: 20 to choose.

The use of the preparation according to the invention as a cosmetic cleansing preparation is advantageous according to the invention. The preparation according to the invention is preferably used as a shower gel, foam bath and bath, shampoo and / or facial cleanser.

It is advantageous according to the invention if the cosmetic preparation according to the invention is stored in a bottle, squeeze bottle, pump spray or aerosol can and applied out of it. Accordingly, fla- See, squeeze bottles, dual-chamber packaging, Pumpspray-, or aerosol cans containing a preparation according to the invention, according to the invention.

The preparation according to the invention advantageously contains one or more anionic surfactants. These are according to the invention advantageously in a concentration of 1 to 20% by weight, and according to the invention preferably in a concentration of 5 to 12% by weight, in each case based on the total weight of the preparation, in the preparation. Particularly preferred according to the invention is the use of narium lauryl ether sulfate as anionic surfactant.

According to the invention, the preparation advantageously contains one or more amphoteric surfactants. These are according to the invention advantageously in a concentration of 1 to 20% by weight, and according to the invention preferably in a concentration of 3 to 8% by weight, in each case based on the total weight of the preparation, in the preparation. Particularly preferred according to the invention is the use of cocamidopropylbetaine as the amphoteric surfactant.

In addition, the preparation according to the invention may advantageously also contain nonionic surfactants. Particularly preferred according to the invention is the use of PEG-7 glyceryl cocoate and / or PEG-40 hydrogenated castor oil as nonionic surfactant.

It is likewise advantageous to add cationic polymers to the preparations for the purposes of the present invention. Suitable cationic polymers are, for example

quaternized cellulose derivatives, e.g. Polyquaternium-10, as are commercially available under the names Celquat and Polymer JR cationic guar derivatives, in particular those sold under the trade names Cosmedia Guar and Jaguar products

polymeric dimethyldiallylammonium salts and their copolymers with esters and amides of acrylic acid and methacrylic acid, in particular the products sold under the names Merquat 100 and Merquat 550 commercially available.

In the context of the present invention, it is advantageous in particular to use cationic polymer or mixtures of cationic polymers in a concentration of 0.01 to 2% by weight, preferably in a concentration of 0.05 to 1.5% by weight. % and particularly preferably from 0.1 to 1.0% by weight, based in each case on the total weight of the preparation.

The compositions according to the invention optionally contain, in addition to the aforementioned substances, the additives customary in cosmetics, for example perfumes, dyes, antimicrobials, moisturizing agents, complexing and sequestering agents, pearlescing agents, plant extracts, vitamins, active ingredients, preservatives, bactericides, pigments containing a have coloring, thickening, softening, wetting and / or moisturizing substances, or other conventional ingredients of a cosmetic or dermatological formulation such as alcohols, polyols, polymers, foam stabilizers, electrolytes, organic solvents or silicone derivatives.

The inventively advantageous usable active ingredients, auxiliaries and additives are by no means limited to the substances and compounds mentioned here by name.

Niacinamide, panthenol, polidocanol, [gamma] -Oryzanol, ubiquinones (especially Q-10) creatine, creatinine, biotin (vitamin H), vitamin E and vitamin E acetate, plant extracts, such as, for example, are particularly advantageous active ingredients according to the invention. Bamboo extract, water-lily extract, alpha-hydroxy acids, e.g. Citric acid, tartaric acid, malic acid, salts such as calcium salts or marine minerals, BHT, propyl gallate and UV filters (for example benzophenone-4 particularly advantageously).

According to the invention, such active ingredients may advantageously be present in concentrations (individual concentration of an active substance) of from 0.001 to 5% by weight, based in each case on the total weight of the preparation, in the preparations.

It is furthermore advantageous according to the invention if effect substances (for example colored and / or active substance beads, glitter substances and the like) are added to the preparations according to the invention and / or the preparation is provided with stable air bubbles and bubbles.

Opacifying agents / pearlescing agents or mixtures which are advantageous according to the invention include:

PEG-3 distearate (eg CUTINA TS from Cognis), a combination of glycol distearate, glycerol, laureth-4 and cocamidopropylbetaine (eg Euperlan PK 3000 and Euperlan PK 4000 from Cognis),

a combination of glycol distearate, coco glucosides, glyceryl oleate and glyceryl stearate (e.g., Lamesoft ™ Benz from Cognis).

Styrene / acrylate copolymers (e.g., Acusol OP 301 from Rohm & Haas)

It is likewise advantageous to add conventional antioxidants to the preparations for the purposes of the present invention. According to the invention, all antioxidants which are suitable or customary for cosmetic and / or dermatological applications can be used as favorable antioxidants.

The amount of antioxidants (one or more compounds) in the preparations is preferably from 0.001 to 30% by weight, particularly preferably from 0.05 to 20% by weight, in particular from 1 to 10% by weight, based on the total weight of the preparation ,

If the cosmetic or dermatological preparation in the sense of the present invention is a solution or emulsion or dispersion, it is possible to use as solvent:

Water or aqueous solutions

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

Fats, waxes and other natural and synthetic fats, preferably esters of fatty acids with lower C-number alcohols, e.g. with isopropanol, propylene glycol or glycerol, or esters of fatty alcohols with alkanoic acids of low C number or with fatty acids;

Alcohols, diols or polyols of low C number, and their ethers, preferably ethanol, isopropanol, propylene glycol, glycerol, ethylene glycol, ethylene glycol monoethyl or monobutyl ether, propylene glycol monomethyl, monoethyl or monobutyl ether, diethylene glycol monomethyl or monoethyl ether and analog products.

In particular, mixtures of the abovementioned solvents are used. For alcoholic solvents, water can be another ingredient. Cosmetic preparations according to the present invention may also be present as gels which, in addition to an effective content of the active ingredient according to the invention and solvents customarily used for it, preferably water, are also organic thickeners, for example gum arabic, xanthan gum, sodium alginate, cellulose derivatives, preferably methylcellulose, Hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose or inorganic thickening agents, e.g. For example, aluminum silicates such as Benetonite, or a mixture of polyethylene glycol and polyethylene glycol stearate or distearate.

Embodiments of the present invention which are advantageous according to the invention are characterized in that the preparation likewise contains polyacrylates as thickening agent.

Polyacrylates which are advantageous according to the invention are polymers of acrylic acid, in particular those selected from the group of the so-called carbomers or carbopols (Carbopol <(R)> is actually a registered trademark of the B.F. Goodrich Company). Advantageous carbopols are for example the types 907, 910, 934, 940, 941, 951, 954, 980, 981, 1342, 1382, 2984 and 5984 or also the types ETD (Easy-to-disperse) 2001, 2020, 2050, Aqua -SF1 wherein these compounds can be present individually or in any desired combinations with one another.

Also advantageous for the purposes of the present invention, the copolymers of C10-30-alkyl acrylates and one or more monomers of acrylic acid, methacrylic acid or their esters which are comparable to the acrylate-alkyl acrylate copolymers are advantageous. The INCI name for such compounds is "Acrylates / C 10-30 Alkyl Acrylate Crosspolymer". Particularly advantageous are those available under the trade names Pemulen TR1 and Pemulen TR2 from the B.F. Goodrich Company.

It is according to the invention of particular advantage when used as polyacrylates C10 to C30-alkyl acrylate copolymers.

The thickener is present in the gel e.g. in an amount of between 0.1 and 30% by weight, preferably between 0.5 and 15% by weight.

Following are advantageous embodiments of the present invention. used raw materials

Trade name INCI Active content manufacturer

Cetiol HE PEG-7 glyceryl cocoate 100% Cognis

DC 5-7139 dimethicone + cocamidopro- 65% + 1% + Dow coming pylbetaine + C12-15 pareth-3 + 1% + 0.6% guar hydroxypropyltrimonium chloride

Dehyquart A-CA Cetrimonium chloride -25% Cognis

Dehyton AB 30 Cocobetaine -30% Cognis

Eumulgin HRE 40 PEG-40 Hydrogenated castor oil 100% Cognis

Euperlan PK 771 sodium laureth sulfate + glycol 25% + 15% + Cognis

distearate + Laureth-10 5%

Euperlan PK 900 PEG-3 distearate + sodium 25% + 14% Cognis

rethsulfat

Glucamate DOE-PEG-120 Methyl glucose dioleate 100% Lubrizol 120

Glycerylglucosid

Jaguar Excel Guar Hydroxypropyltrimonium -90% Rhodia

chloride

Lanette-0 Cetylstearylalcohol 100% Cognis

Merquat 550 Polyquaternium-7 -8% Nalco

Opulyn 301 styrene / acrylate copolymer -40% Rohm & Haas

Polyox WSR-301 PEG-90M -95% Dow Chemical

Rewoderm LI PEG-200 Hydrogenated -70% Evonik Gold520-70 Glycerylpalmat schmidt

Rewopol SB CS disodium PEG-5 lauryl citrate -30% Evonik Gold50 sulfosuccinate schmidt

Tego Amide S 18 Stearamidopropyldimethylamine 100% Evonik Goldschmidt

Tego Betain F 50 Cocamidopropylbetaine + Gly- 36% + -3% Evonik Goldcerin schmidt

Texapon N 70 Sodium Laureth Sulfate -70% Cognis

Ucare Polymer JR Polyquaternium-10 -90% Dow Chemical 400

Uvinul MS-40 Benzophenone-4 100% BASF Comparative experiment shower gel

The following products were manufactured and compared in a test subject:

all concentration data in% by weight

^* Variable amount for setting a pH of 4.8 to 5.3

** Quantity variable for setting a viscosity in the range of 3000 - 5000 mPas (measured with HAAKE viscotester VT02 with rotor 1)

manufacturing

The ingredients of phase A are mixed until a homogeneous phase is obtained.

Eumulgin HRE 40 is melted at a temperature of about 40 ° C. The remaining Phase B raw materials are added to the Eumulgin HRE 40. The phase is mixed homogeneously and added to phase A. The addition of the ingredients of phase C is carried out with stirring in the order given.

Results

7 out of 9 subjects rated the sensor technology of the inventive product A better overall than the sensors of the comparative product B. The other subjects could not detect a difference.

5 out of 9 subjects found the skin feel of the inventive product A to be less greasy-slippery than the skin feeling of the comparative product B. The other subjects could not detect any difference.

It can be clearly seen that the inventive product A is clearly superior to the comparison product with respect to all features.

Comparative experiment shampoo

The following products were manufactured and compared in a test subject:

all concentration data in% by weight

(according to HAAKE viscotester VT02 with rotor 1)

^** Quantity variable to set a pH of 4.8 to 5.8

manufacturing

The Inhalststoffe of phase A are mixed together until a homogeneous phase is formed.

Eumulgin HRE 40 is melted at a temperature of about 40 ° C. The perfume is given to Eumulgin HRE 40. The phase is mixed homogeneously and added to phase A.

The addition of the ingredients of phase C is carried out in the order given. It is stirred until a homogeneous shampoo is formed. Results

5 out of 9 subjects found the sensors of the inventive product A better overall than the sensors of the comparative product B. The other subjects were unable to detect any difference.

4 out of 9 subjects found the skin feel of the inventive product A to be less greasy-slippery than the skin feel of the comparative product B. One subject felt the skin feel of Comparative Product B was less greasy-slippery than the skin feel of Inventive Product A. The remaining subjects could not distinguish determine.

stability

The viscosities of Inventive Product A and Comparative Product B were measured at room temperature (25 ° C) and compared with the viscosity after one day or 7 days storage of the samples at a temperature of -20 ° C (each measured with a HAAKE Viscotester VT02 with rotor 1). Before the measurements of the samples stored at -20 ° C were stored for one day at 25 ° C and measured at this temperature. Product A Product B

(inventive) (comparative product)

Viscosity at 25 ° C 3500 mPas 3200 mPas

Viscosity after 1 day storage at - 3300 mPas 2200 mPas

20 ° C

Viscosity after 7 days storage at 3350 mPas 2350 mPas

-20 ° C

It can be clearly seen that the viscosity of the inventive product A remains approximately constant regardless of the storage at -20 ° C, while the viscosity of the comparative product B by storage at -20 ° C falls by about 30%. The use of glyceryl glucoside leads to an increased stability of the products.

example recipes

shampoo preparations

all concentration data in% by weight

* Quantity variable for setting a viscosity in the range of 3000 - 4500 mPas

(according to HAAKE viscotester VT02 with rotor 1)

^** Quantity variable to set a pH of 4.8 to 5.8

Ucare Polymer JR 400 is interspersed in the water of phase B. The phase B is heated with stirring to about 70 ° C until a clear solution is formed. Phase B is cooled and added to Phase A. The water of phase C is mixed with the sodium hydroxide solution. Jaguar Excel is slowly sprinkled while stirring. Subsequently, the mixture is heated to 70 ° C and stirred until a homogeneous phase is formed. With stirring, the citric acid is added. Phase C is cooled and added to phase A.

Eumulgin HRE 40 is melted at a temperature of about 40 ° C. The remaining phase D raw materials are added to the Eumulgin HRE 40. The phase is mixed homogeneously and added to phase A.

The addition of the ingredients of phase E is carried out in the order given. It is stirred until a homogeneous shampoo is formed.

shower gel preparations

all concentration data

^* Variable amount for setting a pH of 4.8 to 5.3

^** Quantity variable for setting a viscosity in the range of 3000 - 5000 mPas (measured with HAAKE viscotester VT02 with rotor 1)

The ingredients of phase A are mixed until a homogeneous mixture is obtained.

Rinse-off conditioner

all concentration data in% by weight

^* Variable amount for adjusting the pH of the water phase from 3.8 to 4.8

The raw materials of phase A are mixed together and heated to 80 ° C.

The water of phase B is mixed with the sodium hydroxide solution. Jaguar Excel is slowly sprinkled while stirring. Subsequently, the mixture is heated to 70 ° C and stirred until a homogeneous phase is formed. With stirring, the citric acid is added. Phase B is added to Phase A.

In a Kitchen Aid the raw materials of phase C are heated to 80 ° C and mixed homogeneously with stirring. Phase A is added to Phase C.

Phase A and Phase C are mixed and cooled in a Kitchen Aid. At 40 ° C, Phase C is added and at 30 ° CD. It is stirred until a homogeneous conditioner is formed. The viscosity of the conditioner is 3000-4000 mPas (measured with HAAKE viscotester VT02 with rotor 1)

Claims

claims:

1. drug combinations from

(i) one or more acidic preservatives

and

(ii) one or more glucosylglycerides.

2. active compound combinations according to claim 1, in which the molar ratio of one or more acidic preservatives from the range of 100: 1 to 1: 100, preferably 50: 1 to 1: 50, particularly preferably 20: 1 to 1: 20 is selected ,

3. active compound combinations according to claim 1, characterized in that the acidic preservatives or is selected from the group of salicylic acid, benzoic acid, propionic acid, dehydroacetic acid (3-acetyl-6-methyl-2H-pyran-2,4 (3H) - dion) and sorbic acid, wherein salicylic acid, benzoic acid and dehydroacetic acid are preferred and it may also be advantageous to use physiologically acceptable water-soluble metal salts of these acids.

4. Cosmetic preparations containing active substance combinations according to one of claims 1-3.

5. Cosmetic preparations according to claim 4, in which the glucosylglycerides in the water and / or oil phase are present in concentrations of 0.001-40.00 wt.%, Preferably 0.005-15.00 wt.%, Particularly preferably 0.01 - 12.00 wt .-%, each based on the total weight of the composition.

6. Cosmetic preparations according to claim 4 or 5, in which one or more acidic preservatives, in particular those selected from the group of salicylic acid, benzoic acid, propionic acid, dehydroacetic acid (3-acetyl-6-methyl-2H-pyran-2,4 (3H ) -dione) and sorbic acid, or physiologically acceptable water-soluble metal salts of these acids in concentrations of 0.0001 to 10%, more preferably 0.005-5%, particularly preferably 0.01% - 3%, each based on the total weight of the composition, present or present.

7. Preparations according to one of the preceding claims, characterized in that they contain one or more surface-active substances.

8. Use of preparations according to one of the preceding claims as detergent preparations.