Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Patent
1998-04-17
1999-10-12
Webman, Edward J.
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
5147726, 526318, 52631844, 5263285, A61K 7075, A61K 4732, C08F 2018, C08F12018
Patent
active
059651164
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to the use of acrylic copolymers in, and for the preparation of, cosmetic or dermatological compositions, as well as to the compositions used.
For many cosmetic applications, in particular those intended for the treatment and care of the hair, the skin or the eyelashes, polymers are used which are capable, after application to the support to be treated and drying, of forming a deposit having mechanical properties and adhesive properties. In this respect, polymers are sought which can be removed easily under the action of an aqueous solution of surfactants. In parallel, it is sought to obtain a film-forming deposit which is resistant to environmental moisture, in particular a deposit which does not feel hygroscopic, a rain-resistant deposit (for hair or skin use) or a deposit which is resistant to lachrymal fluid (mascaras). Moreover, a film-forming deposit is sought to provide cosmetic properties such as the soft feel generally imparted by hydrophobic substances in cosmetics.
Another problem relating to deposit polymers occurs in the field of hair care, in particular in the context of products for fixing the hair or for retaining its shape. The reason for this is that it is often difficult to adapt the properties of the polymer which needs to be deposited in order to obtain, at the same time, good fixing of the hair, good staying power of this fixing and easy removal by combing or brushing.
It is known to use acrylic copolymers in cosmetic compositions. By way of example, patent application JP-A-87-167 307 describes a styling polymer obtained by copolymerization of the monomer mixture comprising: acid esters,
This polymer makes it possible to give the hair good slippery properties while at the same time maintaining a good feel. However, the presence of a fatty chain in the polymer, introduced by the acrylic acid esters and/or the methacrylic acid esters, makes it difficult to remove the polymer once fixed on the hair.
A cosmetic hair composition is also known from application JP-A-08092046, this composition containing a copolymer comprising from 6 to 35% by weight of (meth)acrylic acid or of itaconic acid, from 15 to 50% by weight of C.sub.10 -C.sub.18 -alkyl (meth)acrylate, from 15 to 50% by weight of C.sub.4 -C.sub.8 -alkyl (meth)acrylate and from 0 to 25% of vinyl-type monomer, in particular acrylamide-type monomer. However, these polymers are difficult to use in compositions comprising an alcoholic medium, but such compositions are particularly advantageous owing to their fast drying time.
One of the objects of the present invention is thus to use, in cosmetic or dermatological compositions, acrylic polymers having film-forming properties and adhesive and mechanical properties that are satisfactory, these polymers being easily removed under the action of an aqueous solution of surfactants, and being easily incorporated into compositions comprising at least one alcoholic medium. In addition, it is an object of the invention to use film-forming polymers which provide good cosmetic properties before and after removal of the composition.
Another object of the invention is to use, in and for the preparation of hairstyling compositions, polymers having both high-performance fixing properties which offer good resistance to weak mechanical stresses and good rigidity, but are then readily removed by shampooing, brushing or combing, while at the same time providing good cosmetic properties such as a soft feel. In particular, one of the objects of the invention is to propose the use of polymers which are easy to use in hair compositions comprising an alcoholic medium in order to allow rapid drying of the composition, the said composition having good lacquering power and no sensation of stickiness.
The Applicant has discovered, surprisingly, that these objects can be achieved by using certain particular acrylic copolymers in, and for the preparation of, cosmetic or dermatological compositions.
The subject of the present invention is the use, in, and for the preparation of, cosmetic or
REFERENCES:
patent: 4552755 (1985-11-01), Randen
patent: 5116924 (1992-05-01), Bung et al.
T. Shohei et al., "Hair Cosmetic", Patent Abstract of Japan for JP 08 092046, (Abstract Only), 96 (8), Aug. 30, 1996.
Lion Bertrand
Mondet Jean Aulnay Sous
"L'Oreal"
Webman Edward J.
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