# US 2013/0156833 A1 · Cosmetic composition comprising peba

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- Number: US 2013/0156833 A1
- Document ID: US20130156833A1
- Status: Published application
- Kind: A1
- Application number: 13/807,783
- Filed: 2011-06-29
- Published: 2013-06-20
- Earliest claimed: 2010-07-01
- Assignees: Arkema France
- Inventors: Frédéric Malet
- Web page: https://patentgrep.com/patent/US20130156833A1

## CPC

- A61K 8/90: Block copolymers (A61K8/89 takes precedence)
- A61K 47/34: Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers (A61K47/10 takes precedence)
- A61Q 1/10: for eyes, e.g. eyeliner, mascara
- A61Q 1/14: Preparations for removing make-up
- A61Q 19/00: Preparations for care of the skin
- A61K 2800/10: General cosmetic use
- A61Q 15/00: Anti-perspirants or body deodorants (deodorisation of air A61L9/00)
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

The present invention relates to a composition comprising from 0.1 to 30% by weight of copolymer comprising polyether blocks and polyamide blocks (PEBA), and from 70 to 99.9% by weight of a medium which is acceptable in the cosmetics industry, in the perfumery industry and/or in the pharmaceutical industry. The present invention also relates in particular to a process for incorporating a copolymer comprising polyether blocks and polyamide blocks into a cosmetic, perfumery and/or pharmaceutical medium. The subject matter of the present invention is also the use of a copolymer comprising polyether blocks and polyamide blocks (PEBA) for producing a cosmetic, pharmaceutical or perfumery product, said PEBA being incorporated in the form of a composition in accordance with the invention.

## Claims

### Claim 1

A composition comprising:
from 0.1 to 30 wt % of polyether-block-amide copolymer (PEBA) and
from 70 to 99.9 wt % of a medium that is acceptable in cosmetics, in perfumery and/or in pharmacy.

### Claim 2 (depends on 1)

The composition as claimed in claim 1, in which said medium comprises at least one component selected from water, alcohols, alcoholic solutions, lipid compounds, carbohydrate compounds, hydrocarbons, synthetic polymers, natural polymers, and/or plant extracts.

### Claim 3 (depends on 1)

The composition as claimed in claim 1, said composition having at least one of the following forms: dispersion, solution, emulsion, microemulsion, nanoemulsion, dry emulsion, suspension, aerosol, gel, compact gel, gum, plastic gum, paste, mousse, cream, powder, loose powder, compact powder, expanded powder, butter, film, elastic film, and mixtures thereof.

### Claim 4 (depends on 1)

The composition as claimed in claim 1, in which said medium comprises an aqueous phase comprising at least 50% water.

### Claim 5 (depends on 1)

The composition as claimed in claim 1, in which said medium comprises an oily phase comprising at least 50% of organic solvent selected from fatty esters, fatty alcohols, fatty acids and mixtures thereof.

### Claim 6 (depends on 1)

The composition as claimed in claim 1 in which said medium comprises from 0.1 to 30 wt % of surfactant based on the total weight of PEBA.

### Claim 7 (depends on 6)

The composition as claimed in claim 6 in which the surfactant is selected from anionic surfactants and nonionic surfactants.

### Claim 8 (depends on 6)

The composition as claimed in claim 6 in which the surfactant is selected from salts of alkyl ether sulfate and of polyoxyalkylene, salts of dialkylsulfosuccinate, salts of fatty acid and ethylene oxide/propylene oxide copolymers, and mixtures thereof.

### Claim 9 (depends on 4)

The composition as claimed in claim 4, characterized in that it comprises:
from 0.1 to 30% of PEBA,
from 40 to 99.9% of oily phase and/or of aqueous phase,
from 0 to 30% of surfactant,
based on the total weight of the composition.

### Claim 10 (depends on 1)

The composition as claimed in claim 1, further comprising a thickener.

### Claim 11 (depends on 1)

The composition as claimed in claim 1, characterized in that it forms a dispersion of PEBA dissolved in an oily phase dispersed in an aqueous phase in the presence of a surfactant.

### Claim 12 (depends on 1)

The composition as claimed in claim 1, characterized in that it forms a dispersion of PEBA dissolved in an aqueous phase dispersed in an oily phase in the presence of a surfactant.

### Claim 13

A method of incorporating a polyether-block-amide copolymer in a cosmetic, perfumery and/or pharmaceutical medium, said method comprising at least one step selected from: mixing, dispersing, homogenizing, high-pressure homogenizing, forming a solution, diluting, dissolving, gelling, thickening, emulsifying, refining, making into a paste, treating thermally, drying, lyophilizing, baking, extruding, grinding, granulating, spraying, filtering, and successive or simultaneous mixtures of several of these steps.

### Claim 14 (depends on 13)

The method as claimed in claim 13, comprising the steps of:
adding polyether-block-amide copolymer (PEBA) to a medium acceptable in cosmetics, in perfumery, and/or in pharmacy, the PEBA/medium weight ratio being in the range from 40/60 to 1/99, inclusive; and
heating said mixture at a temperature in the range from 40 to 190° C., for a time in the range from 5 to 120 minutes;
the steps of addition and of heating being either simultaneous, or successive in this order or in the reverse order.

### Claim 15 (depends on 14)

The method as claimed in claim 14, in which the step of addition comprises adding from 0.1 to 30% of polyether-block-amide copolymer (PEBA) to 70 to 99.9% of a medium acceptable in cosmetics and/or in perfumery, the mixture obtained representing 100%.

### Claim 16 (depends on 13)

The method as claimed in claim 13, in which the PEBA used is in the form of powder with D50 in the range from 1 to 150 μm.

### Claim 17 (depends on 13)

The method as claimed in claim 13, in which the medium that is acceptable in cosmetics, in perfumery and/or in pharmacy comprises an aqueous phase comprising at least 50% water based on the weight of aqueous phase and/or an oily phase comprising at least 50% of organic solvent based on the weight of oily phase, said organic solvent being selected from fatty esters, fatty alcohols, fatty acids and mixtures thereof.

### Claim 18 (depends on 17)

The method as claimed in claim 17, comprising the following steps:
dissolving the PEBA in the oily phase;
emulsifying the solution of PEBA obtained in the aqueous phase containing at least one surfactant selected from anionic surfactants and nonionic surfactants.

### Claim 19 (depends on 17)

The method as claimed in claim 17, comprising a step consisting of emulsifying the PEBA of melting point Tm in the aqueous phase containing at least one surfactant selected from anionic surfactants and nonionic surfactants, at a temperature above Tm, and with stirring at a sufficient shear rate so that D50 of the emulsified PEBA droplets is in the range from 0.1 to 50 μm.

### Claim 20 (depends on 1)

The use of a polyether-block-amide copolymer (PEBA) for making a cosmetic, pharmaceutical or perfumery product, said PEBA being incorporated in the form of a composition as claimed in claim 1.

### Claim 21 (depends on 1)

The composition as claimed in claim 1, said composition being a colored, non-colored and/or transparent product selected from the following products:
makeup products for the face and the human body, such as foundation, tinted cream, loose or compact powder, eye shadow, mascara, eye liner, lipstick, nail varnish;
care products for the face and the human body, such as cream, milk, lotion, mask, peeling product, cleansing and/or makeup removal products, deodorants, antiperspirants, shaving products, epilatories;
hair products, such as shampoos, products for shaping the hair, styling products, anti-dandruff products, products against hair loss, products against dryness of the hair, hair dyes, bleaching products;
perfumery products, such as perfume, milk, cream, perfumed loose or pressed powder.