Drug – bio-affecting and body treating compositions – Inorganic active ingredient containing – Elemental sulfur or compound thereof
Reexamination Certificate
2001-12-11
2004-12-28
Venkat, Jyothsna (Department: 1615)
Drug, bio-affecting and body treating compositions
Inorganic active ingredient containing
Elemental sulfur or compound thereof
C424S401000
Reexamination Certificate
active
06835399
ABSTRACT:
The present invention relates to a composition comprising, in a physiologically acceptable medium, a dispersion of film-forming polymer particles and a polymer containing a specific hetero atom, the composition being intended in particular for cosmetics. The invention also relates to a cosmetic make-up or care process for keratin materials. The make-up or care process and composition according to the invention are intended more particularly for the keratin materials of human beings, such as the skin (including the scalp), the nails, keratin fibers, especially substantially longilinear keratin fibers, such as the eyelashes, the eyebrows and the hair. The invention more especially relates to a mascara.
The composition according to the invention can be in the form of a coating composition for the eyelashes (in particular a mascara), an eyeliner, a product for the eyebrows, a product for the lips, a face powder, an eyeshadow, a foundation, a make-up product for the body, a concealer product, a nail varnish, a skincare product, including a product for scalp care, or a haircare product (hair mascara or spray).
The make-up composition may also be applied to make-up accessories (supports) such as false eyelashes, hairpieces, wigs or false nails or alternatively to pellets or patches adhering to the skin or the lips (such as beauty spots).
Compositions for coating the eyelashes, known as mascaras, generally comprise, in a known manner, at least one wax in the form of a wax-in-water emulsion, and at least one film-forming polymer to deposit a make-up film on the eyelashes and to coat them, for example as described in document WO-A-95/15741. Users expect these products to have good cosmetic properties, such as adhesion to the eyelashes, lengthening or curling of the eyelashes, or alternatively good staying power of the mascara over time, in particular good resistance to rubbing, for example with the fingers or fabrics (handkerchiefs or towels).
However, with these compositions, the make-up properties such as the coating, the lengthening or the curling of the eyelashes are obtained when a large amount of product is deposited on the eyelashes using an applicator, such as a mascara brush. When the composition does not adhere well to the eyelashes, the user must apply the brush impregnated with product onto the eyelashes several times, which requires a certain amount of time to be devoted to applying the make-up and obtaining the desired make-up results. However, this time may be perceived as far too long by users in a hurry. There is thus a need to have available mascaras that allow the expected make-up effect to be obtained quickly and easily.
The aim of the present invention is to provide a composition for making up keratin materials, especially keratin fibers such as the eyelashes, which applies easily to the keratin materials and leads quickly to a make-up effect with good cosmetic properties.
The inventors have found, surprisingly, that the use of a polymer containing a specific hetero atom in a composition comprising particles of a film-forming polymer dispersed in the medium of the composition makes it possible to improve the adhesion properties of the composition on keratin materials, especially on keratin fibers such as the eyelashes. The composition is easy to apply to the keratin materials and allows the composition to be deposited quickly in an amount that is sufficient to obtain a make-up effect with the expected cosmetic properties. In particular, a thick deposit of the make-up on the keratin materials is quickly obtained, which avoids the users having to spend too long applying the composition to the keratin materials.
Thus, for a mascara, a make-up which quickly thickens the keratin fibers, in particular the eyelashes, is obtained; instantaneous loading of the eyelashes is thus observed. The mascara also gives good lengthening to the made-up eyelashes.
More specifically, a subject of the invention is a composition comprising, in a physiologically acceptable medium, at least one first polymer with a weight-average molecular mass of less than 100 000, comprising a) a polymer skeleton containing hydrocarbon-based repeating units containing at least one hetero atom, and optionally b) at least one pendent fatty chain and/or at least one terminal fatty chain, which may be functionalized, containing from 6 to 120 carbon atoms and being linked to these hydrocarbon-based units, and a dispersion of particles of a second film-forming polymer that is insoluble in said medium.
A subject of the invention is also a cosmetic process for making up or caring for the keratin materials of human beings, comprising the application of a composition as defined above to the keratin materials. Preferably, the process applies to substantially longilinear keratin fibers such as the eyelashes, the hair and the eyebrows, and more especially to the eyelashes.
A subject of the invention is also the use of a composition as defined above to obtain a deposit which adheres to keratin materials and/or a quick make-up result on keratin materials.
Another subject of the invention is the use of a mascara comprising a composition as defined above to thicken quickly and/or to lengthen the eyelashes.
A subject of the invention is also the use, in a physiologically acceptable composition, of a combination of at least one first polymer with a weight-average molecular mass of less than 100 000 and better still less than 50 000, comprising a) a polymer skeleton containing hydrocarbon-based repeating units containing at least one hetero atom, and b) optionally at least one pendent fatty chain and/or at least one terminal fatty chain, which may be functionalized, containing from 6 to 120 carbon atoms and being linked to these hydrocarbon-based units, and at least one dispersion of particles [lacuna] a second film-forming polymer that is insoluble in said medium to obtain a deposit which adheres to keratin materials and/or a quick make-up result on keratin materials and/or to thicken quickly and/or lengthen the eyelashes.
The expression “physiologically acceptable medium” means a medium which is non-toxic and which can be applied to the skin, superficial body growths or the lips of human beings, such as a cosmetic medium.
For the purposes of the invention, the expression “functionalized chain” means an alkyl chain comprising one or more functional or reactive groups chosen in particular from amide, hydroxyl, ether, oxyalkylene, polyoxyalkylene and halogen groups, including fluoro or perfluoro groups, ester, siloxane and polysiloxane groups. In addition, the hydrogen atoms of one or more fatty chains may be substituted at least partially with fluorine atoms.
According to the invention, these chains may be linked directly to the polymer skeleton or via an ester function or a perfluoro group.
For the purposes of the invention, the term “polymer” means a compound containing at least 2 repeating units and preferably at least 3 repeating units.
For the purposes of the invention, the expression “hydrocarbon-based repeating units” means a unit containing from 2 to 80 carbon atoms and preferably from 2 to 60 carbon atoms, bearing hydrogen atoms and optionally oxygen atoms, which may be linear, branched or cyclic, and saturated or unsaturated. These units each also comprise one or more hetero atoms that are advantageously non-pendent but are in the polymer skeleton. These hetero atoms are chosen from nitrogen, sulfur and phosphorus atoms and combinations thereof, optionally combined with one or more oxygen atoms. The units preferably comprise at least one nitrogen atom, in particular a non-pendent nitrogen atom. These units also advantageously comprise a carbonyl group.
The units containing a hetero atom are, in particular, amide units forming a skeleton of the polyamide type, carbamate and/or urea units forming a polyurethane, polyurea and/or polyurea-urethane skeleton. These units are preferably amide units. The pendent chains are advantageously linked directly to at least one of the hetero atoms of the polymer skeleton.
Finnegan Henderson Farabow Garrett & Dunner LLP
L'Oreal (S.A.)
Venkat Jyothsna
LandOfFree
Cosmetic composition comprising a polymer blend does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cosmetic composition comprising a polymer blend, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmetic composition comprising a polymer blend will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3302383