EP4167926A1 - Hochviskose kosmetische nanoemulsion - Google Patents
Hochviskose kosmetische nanoemulsionInfo
- Publication number
- EP4167926A1 EP4167926A1 EP21729827.2A EP21729827A EP4167926A1 EP 4167926 A1 EP4167926 A1 EP 4167926A1 EP 21729827 A EP21729827 A EP 21729827A EP 4167926 A1 EP4167926 A1 EP 4167926A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- emulsion
- inci
- nanoemulsion
- nonionic
- polyglyceryl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/04—Dispersions; Emulsions
- A61K8/06—Emulsions
- A61K8/062—Oil-in-water emulsions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/36—Carboxylic acids; Salts or anhydrides thereof
- A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/37—Esters of carboxylic acids
- A61K8/375—Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
- A61K8/731—Cellulose; Quaternized cellulose derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
- A61K8/737—Galactomannans, e.g. guar; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/89—Polysiloxanes
- A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/413—Nanosized, i.e. having sizes below 100 nm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/48—Thickener, Thickening system
Definitions
- the present invention relates to a highly viscous cosmetic nanoemulsion containing one or more polymers selected from the group of nonionic polysaccharides and to the method for producing a highly viscous cosmetic nanoemulsion, characterized in that a nanoemulsion is produced from an oil phase and a first water phase under high pressure homogenization and then follows is added with stirring into a further aqueous phase containing one or more nonionic polysaccharides.
- Emulsions have excellent cosmetic properties: the lipophilic components are absorbed by the skin relatively quickly, while the aqueous components sustainably increase the skin's moisture content.
- Nanoemulsions are usually O / W emulsions and, in addition to the optical advantage, also have the advantage of being particularly mechanically stable and, due to the large total surface area of all droplets, better releasing lipophilic active ingredients.
- a disadvantage of the prior art is the fact that nanoemulsions are relatively thin and have viscosities of less than 1000 mPas. This makes their application on the skin relatively difficult, since they easily "drip down". Prior art nanoemulsions are therefore usually offered as a spray.
- nanoemulsions are defined as "highly viscous” if they have a viscosity of at least 3000 mPas and this viscosity is determined using the following method:
- the measurement is carried out on the “Rheomat R123” rotational viscometer from ProRheo.
- the nanoemulsion is first stored in a 150ml screw-top jar for at least 24 hours at 25 ° C after production.
- the measurement can then be carried out with the “measuring body 1” spindle (item no. 2000191) (speed range: 62.5 / min, torque range: 0.25-10 mNm).
- Nanoemulsions are defined as “transparent” if they have a transparency of at least 30% at a wavelength of 900 nm and a transparency of at least 20% at a wavelength of 650 nm.
- the transparency is determined with the aid of the following measurement method:
- the transmission is determined by means of VIS photometry.
- the Specord 250 device from Analytik Jena and a 1 cm disposable cuvette are used for this purpose, water is used as the reference used.
- the transmission at the wavelengths 420nm, 650nm and 900nm is measured and displayed digitally.
- the mean droplet diameter is determined by means of dynamic light scattering on the Beckman Coulter - N4 Plus Submicron Particle Size AnalyzerClouter N4 +.
- the device has a 10mW helium-neon laser source (632, 8nm) and the working angle used is 90 °. Before the measurement, the samples are diluted with water until the software detects the required attenuation and the laser can work optimally. Then 5 measurements are carried out each time at 23 ° C so that there is sufficient reproducibility.
- the object is surprisingly achieved by a highly viscous cosmetic nanoemulsion containing one or more polymers selected from the group of nonionic polysaccharides.
- the object is also surprisingly achieved by a method for producing a highly viscous cosmetic nanoemulsion, characterized in that a nanoemulsion is produced from an oil phase and a first water phase, and optionally further phases such as perfume, preservation under high pressure homogenization and this is then produced with stirring is added to a further aqueous phase containing one or more nonionic polysaccharides.
- formulations “according to the invention”, “preparation according to the invention” etc. always relate to the preparations and methods according to the invention, i.e. also to preparations with which the method according to the invention is implemented.
- hydroxyethyl cellulose, hydroxypropyl guar and / or locust bean gum is used as the nonionic polysaccharide.
- hydroxyethyl cellulose or hydroxypropyl guar is used as the nonionic polysaccharide.
- the total amount of nonionic polysaccharide in the emulsion is 0.5 to 2.5% by weight, based on the total weight of the emulsion. If the nanoemulsion according to the invention contains hydroxyethyl cellulose or hydroxypropyl guar as nonionic polysaccharide, then this amounts to 0.7-2.5% by weight, based on the total weight of the nanoemulsion.
- Palmitic Acid + Stearic Acid + Myristic Acid which is partially neutralized (e.g. potassium hydroxide, sodium hydroxide or triethanolamine), polyglyceryl-3-distearate (INCI : Polyglyceryl-3 distearate), polyglyceryl-3-methylglucose distearate (INCI: Polyglyceryl-3 methylglucose distearate), glyceryl stearate (self-emulsifying) (INCI: Glyceryl Stearate SE); Sodium stearoyl glutamate (INCI: Sodium Stearoyl Glutamate + Sodium Chloride), sodium cetearyl sulfate (INCI: Sodium Cetearyl Sulfate) and / or potassium cetyl phosphate (INCI: Potassium Cetyl Phosphate + Aqua) can be used.
- partially neutralized e.g. potassium hydroxide, sodium hydroxide or triethanolamine
- Embodiments advantageous according to the invention are characterized in that the total concentration of emulsifier is from 0.5 to 6.5% by weight, based on the total weight of the emulsion.
- the viscosity of the emulsion is 1000 to 15000 mPas.
- the emulsion according to the invention is transparent.
- the transmission of the preparation at 900 nm is greater than / equal to 30%.
- the transmission of the preparation at 650 nm is greater than / equal to 20%.
- Embodiments of the present invention which are advantageous according to the invention are characterized in that the emulsion has a pH of 5 to 8.
- the amount of the oil phase in the emulsion is less than / equal to 15% by weight, based on the total weight of the emulsion.
- the nonionic polysaccharide is first slurried in glycerol and this slurried nonionic polysaccharide is then added to the further constituents of this phase with stirring.
- a weight ratio of glycerol to nonionic polysaccharide of greater than / equal to 2: 1 is advantageously chosen.
- Advantageous embodiments of the method according to the invention are further characterized in that the high pressure homogenization takes place at 800 to 1000 bar.
- a cosmetic nanoemulsion is produced by the method according to the invention.
- the macroemulsion produced above is now compressed at a process temperature of approx. 35-55 ° C with the GEA Niro Soavi's PandaPLUS 2000 device at 800-1000 bar using high pressure to a droplet size of ⁇ 150 nm.
- the basic recipe for example B is prepared in such a way that the nanoemulsion is used as the water phase and the hydroxypropyl guar, which is slurried in glycerine, is incorporated directly into the nanoemulsion under strong shering.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Emergency Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Dispersion Chemistry (AREA)
- Dermatology (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020207780.0A DE102020207780A1 (de) | 2020-06-23 | 2020-06-23 | Hochviskose kosmetische Nanoemulsion |
| PCT/EP2021/063923 WO2021259580A1 (de) | 2020-06-23 | 2021-05-25 | Hochviskose kosmetische nanoemulsion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4167926A1 true EP4167926A1 (de) | 2023-04-26 |
Family
ID=76269710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21729827.2A Withdrawn EP4167926A1 (de) | 2020-06-23 | 2021-05-25 | Hochviskose kosmetische nanoemulsion |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4167926A1 (de) |
| DE (1) | DE102020207780A1 (de) |
| WO (1) | WO2021259580A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3133617B1 (fr) * | 2022-03-15 | 2025-02-21 | Gattefosse Sas | Utilisation comme base émulsionnante dans une formulation cosmétique ou pharmaceutique, d’une composition comprenant du stéaroyl glutamate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007102052A2 (en) * | 2005-09-14 | 2007-09-13 | Foamix Ltd. | Foam containing unique oil globules |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2730932B1 (fr) * | 1995-02-27 | 1997-04-04 | Oreal | Nanoemulsion transparente a base de lipides amphiphiles non-ioniques fluides et utilisation en cosmetique ou en dermopharmacie |
| FR2811564B1 (fr) * | 2000-07-13 | 2002-12-27 | Oreal | Nanoemulsion contenant des polymeres non ioniques, et ses utilisations notamment dans les domaines cosmetique, dermatologique, pharmaceutique et/ou ophtalmologique |
| CA2600288A1 (en) | 2005-09-19 | 2007-04-12 | Combe Incorporated | Stable emulsion systems with high salt tolerance |
-
2020
- 2020-06-23 DE DE102020207780.0A patent/DE102020207780A1/de not_active Withdrawn
-
2021
- 2021-05-25 EP EP21729827.2A patent/EP4167926A1/de not_active Withdrawn
- 2021-05-25 WO PCT/EP2021/063923 patent/WO2021259580A1/de not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007102052A2 (en) * | 2005-09-14 | 2007-09-13 | Foamix Ltd. | Foam containing unique oil globules |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020207780A1 (de) | 2021-12-23 |
| WO2021259580A1 (de) | 2021-12-30 |
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Legal Events
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| DAX | Request for extension of the european patent (deleted) | ||
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| 18D | Application deemed to be withdrawn |
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