Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions
Reexamination Certificate
2000-09-15
2003-10-07
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
C424S070110, C424S070120, C424S070160, C424S401000
Reexamination Certificate
active
06630133
ABSTRACT:
The invention relates to cosmetic compositions comprising at least one specific silicone/acrylate copolymer and at least one thickening agent. The invention also relates to cosmetic processes, in particular processes for fixing and/or holding the hairstyle by using said compositions, as well as to processes for manufacturing cosmetic formulations comprising including in said formulations at least one composition according to the invention.
Thickened compositions, in particular hair gels, which are generally applied to the hair before placing the hair in shape, are known. A blow-drying or hairsetting operation is then carried out to shape the hair and set the hairstyle. These thickened compositions, in particular these gels, can contain polymeric resins.
However, they can have the drawback of adversely affecting the cosmetic properties of the hair. Thus, the hair may become coarse and difficult to disentangle, it may lose its pleasant feel and appearance or it may lack body. Such cosmetic hair compositions which afford improved cosmetic properties, in particular in terms of at least one of disentangling, softness and feel, are thus sought.
In addition, thickened cosmetic hair compositions can also have the drawback of giving rise to a powdering effect. For the purposes of the present invention, the term “powdering” means the aptitude of the material obtained, on drying of the hair composition, to form a powder after it has been applied to the hair. Accordingly, some unpleasant effects can be that the powder can fall on the user's shoulders or clothing, or attach to the comb or brush.
Thus, it would be advantageous to find thickened cosmetic hair compositions, in particular gels, which overcome at least one of the drawbacks indicated above, and which in particular fix the hairstyle well, while at the same exhibit good cosmetic properties, and which do so without a powdering effect.
The inventor has discovered, surprisingly and unexpectedly, that when silicone/acrylate copolymers are combined with thickening agents, it is possible to obtain such a cosmetic composition.
One subject of the invention is a cosmetic composition comprising, in a cosmetically acceptable medium, at least one silicone/acrylate copolymer and at least one non-cellulose thickening agent, wherein the at least one silicone/acrylate copolymer can be obtained by radical-mediated polymerization of at least one ethylenically unsaturated monomer (a) in the presence of at least one silicone derivative (b) comprising at least one oxyalkylene group.
Another subject of the invention relates to a cosmetic hair process, in particular a process for fixing and/or holding the hairstyle using said composition.
Yet another subject of the invention relates to the use of this composition for the manufacture of a cosmetic hair formulation which is intended in particular for holding and/or shaping the hairstyle.
Representative silicone/acrylate copolymers targeted by the present invention include those described in International patent application WO 99/04750. Specifically, the copolymer sold by BASF under the name Luviflex Silk can be used. This polymer is a grafted copolymer of tert-butyl acrylate/methacrylic acid and silicone copolyol.
For example, the at least one ethylenically unsaturated monomer (a) can be chosen from at least one monomer of formula (I
a
):
in which:
X is chosen from OH, OM, OR
8
, NH
2
, NHR
8
and N(R
8
)
2
wherein:
R
8
, which may be identical or different, are each chosen from hydrogen atoms, linear and branched C
1
to C
40
alkyl groups, optionally substituted with at least one group chosen from alkoxy groups, amino groups and carboxyl groups, monohydroxylated linear and branched C
1
to C
40
alkyl groups, optionally substituted with at least one group chosen from alkoxy groups, amino groups and carboxyl groups, polyhydroxylated linear and branched C
1
to C
40
alkyl groups, optionally substituted with at least one group chosen from alkoxy groups, amino groups and carboxyl groups, hydroxylated polyethers; and
M is chosen from Na
+
, K
+
, Mg
++
, NH
4+
, an alkylammonium group, a dialkylammonium group, a trialkylammonium group and a tetraalkylammonium group; and
R
7
and R
6
, which may be identical or different, are each chosen from hydrogen atoms, linear and branched C
1
to C
8
alkyl groups, methoxy groups, ethoxy groups, 2-hydroxyethoxy groups, 2-methoxyethoxy groups, 2-ethoxyethyl groups, CN groups, COOH groups and COOM groups, wherein M is defined as above.
For example R
8
, which may be identical or different, can each be chosen from N,N-dimethylaminoethyl groups, 2-hydroxyethyl groups, 2-methoxyethyl groups, 2-ethoxyethyl groups, hydroxypropyl groups, methoxypropyl groups and ethoxypropyl groups.
In the present invention, the at least one monomer of formula (I
a
) can be chosen from acrylic acid and its salts, esters and amides. The at least one monomer of formula (I
a
) may also optionally be substituted. For example, the at least one monomer of formula (I
a
) can also be chosen from methacrylic acid, ethacrylic acid and 3-cyanoacrylic acid.
The at least one monomer of formula (I
a
) can also be chosen from esters which may be chosen from derivatives of linear C
1
to C
40
alkyls, derivatives of branched C
3
to C
40
alkyls, derivatives of C
3
to C
40
carboxylic alcohols, derivatives of polyfunctional alcohols comprising 2 to 8 hydroxyl groups, derivatives of alcohol ethers and derivatives of polyalkylene glycols. Non-limiting examples of polyfunctional alcohols comprising 2 to 8 hydroxyl groups which may be used according to the present invention include ethylene glycol, hexylene glycol, glycerol and 1,2,6-hexanetriol. Non-limiting examples of alcohol ethers which may be used according to the present invention include methoxymethanol and ethoxyethanol.
The at least one monomer of formula (I
a
) can also be chosen from N,N-dialkylaminoalkyl acrylates, N,N-dialkylaminoalkyl methacrylates, N-dialkylaminoalkyl acrylamides and N-dialkylaminoalkyl methacrylamides, wherein the amide group may optionally be unsubstituted, N-alkyl-monosubstituted, N-alkylamino-monosubstituted or N,N-dialkylamino-disubstituted, and wherein the alkyl and alkylamino groups are chosen from groups derived from linear C
1
to C
40
carboxylic units and groups derived from branched C
3
to C
40
carboxylic units.
The at least one ethylenically unsaturated monomer (a) can be chosen from C
1
to C
40
vinyl esters, C
1
to C
40
allyl esters, linear C
3
to C
40
carboxylic acids, branched C
3
to C
40
carboxylic acids, vinyl halides, allyl halides, vinyllactams, heterocyclic compounds substituted with at least one group chosen from vinyl groups and allyl groups, N-vinylimidazoles, diallylamines, vinylidene chloride, carbon-based unsaturated compounds, acrylic acid derivatives quaternized with epichlorohydrin and methacrylic acid derivatives quaternized with epichlorohydrin. Non-limiting examples of vinyllactams include vinylpyrrolidone and vinylcaprolactam. Non-limiting examples of heterocyclic compounds substituted with at least one group chosen from vinyl groups and allyl groups include vinylpyridine, vinyloxazoline and allylpyridine. Non-limiting examples of carbon-based unsaturated compounds include styrene and isoprene.
In one embodiment, the at least one ethylenically unsaturated monomer (a) is chosen from N-vinylimidazoles, diallylamines, vinylidene chloride, carbon-based unsaturated compounds, acrylic acid derivatives quaternized with epichlorohydrin and methacrylic acid derivatives quaternized with epichlorohydrin.
Representative at least one ethylenically unsaturated monomers (a) according to the present invention comprise acrylic acid, methacrylic acid, ethacrylic acid, methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, decyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, decyl met
Finnegan Henderson Farabow Garrett & Dunner LLP
Fubara Blessing
L'Oreal (S.A.)
Page Thurman K.
LandOfFree
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