Hairstyling composition which makes possible remodelling of the hairstyle and process for remodelling the hairstyle using such a composition

• US 20030143180A1
• Filed: 12/27/2002
• Published: 07/31/2003
• Est. Priority Date: 07/18/2000
• Status: Active Grant

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: Samain, Henri, Giroud, Franck
• Granted Patent: US 7,335,348 B2
• Time in Patent Office: Days
• US Class Current: 424/70.16
• CPC Class Codes: A61K 2800/54 Polymers characterized by specific structures/properties
• CPC Class Codes: A61K 8/046 Aerosols; Foams
• CPC Class Codes: A61K 8/8152 Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• CPC Class Codes: A61Q 5/06 Preparations for styling the hair, e.g. by temporary shaping or colouring

Abstract

The invention relates to a styling composition comprising, in a physiologically acceptable liquid medium, the combination of at least one film-forming fixing polymer and of at least one crystalline hot-melt polymer which is soluble in the said medium and which has a crystalline melting temperature, measured by differential scanning calorimetry, of between 30° C. and 80° C., and to a process for the thermal remodelling of the hair using this composition.

Claims

1. Styling composition comprising, in a physiologically acceptable medium, the combination

(a) of at least one film-forming fixing polymer and

(b) of at least one crystalline hot-melt polymer which is soluble in the said medium and which has a crystalline melting temperature, measured by differential scanning calorimetry, of between 30°

C. and 80°

C.

2. Styling composition according to claim 1, characterized in that the said crystalline hot-melt polymer is composed

i) of 85 to 98% by weight of hydrophobic units derived from α

,β

-ethylenic monomers with a C_12-50, preferably C_14-24, n-alkyl side chain which form crystalline homopolymers and

ii) of 2 to 15% by weight of hydrophilic units derived from α

,β

-unsaturated C_1-6 monocarboxylic acids, from unsaturated C_4-6 dicarboxylic acids, from the esters and amides comprising a C_1-4 alkyl chain of these monocarboxylic or dicarboxylic acids, from hydroxyethyl methacrylate and from vinylpyrrolidone.

3. Styling composition according to claim 1 or 2, characterized in that the said crystalline hot-melt polymer is a copolymer comprising approximately 10% by weight of units derived from acrylic acid and approximately 90% by weight of units derived from octadecyl methacrylate.

4. Styling composition according to any one of the preceding claims, characterized in that the said film-forming fixing polymer is chosen from anionic, cationic, amphoteric or nonionic film-forming fixing polymers.

5. Styling composition according to any one of the preceding claims, characterized in that the ratio by weight of the said hot-melt polymer (b) to the fixing polymer (a) is between 1/10 000 and 3/1, preferably between 1/200 and 3/5.

6. Styling composition according to any one of the preceding claims, characterized in that the total amount of fixing polymer (a) and of hot-melt polymer (b) is between 1% and 20% by weight with respect to the final styling composition.

7. Styling composition according to any one of the preceding claims, characterized in that the said physiologically acceptable liquid medium comprises a solvent chosen from water, lower C_1-4 alcohols, such as ethanol or isopropanol, acetone, methyl ethyl ketone, ethyl acetate, methyl acetate, butyl acetate, diethoxyethane, dimethoxyethane, C_6-10 alkanes or mixtures of these compounds.

8. Process for remodelling the hair, which consists

(1) in applying, to dry or wet hair, a styling composition according to any one of the preceding claims,

(2) in giving the hair the desired shape by heating the hair by means of an appropriate heat source to a temperature close to or greater than the crystalline melting temperature of the crystalline hot-melt polymer present in the styling composition, and

(3) in allowing the hair to cool to a temperature below the said crystalline melting temperature of the said crystalline hot-melt polymer,

it being possible for these latter two stages to be repeated many times without the, introduction of additional styling composition.