Abstract: Linear block ethylenic copolymer, comprising: at least two blocks having different glass transition temperatures (Tg); at least one of these blocks-having a glass transition temperature of less than equal to 20° C.; the said copolymer also having an adhesion or “tack” value of greater than 1N. Cosmetic composition comprising this copolymer. The copolymer improves the styling power and hold of a hair lacquer, increases the adhesion of a nail varnish and improves the hold and adhesion of a makeup composition.

Abstract: Linear block ethylenic copolymer, comprising: at least two blocks having different glass transition temperatures (Tg); at least one of these blocks having a glass transition temperature of less than equal to 20° C.; the said copolymer also having an adhesion or “tack” value of greater than 1N. Cosmetic composition comprising this copolymer. The copolymer improves the styling power and hold of a hair lacquer, increases the adhesion of a nail varnish and improves the hold and adhesion of a makeup composition.

Abstract: The invention relates to a cosmetic composition comprising at least one cosmetically acceptable organic liquid medium and at least one film-forming linear block ethylenic polymer, the said polymer being such that, when it is present in sufficient amount in the composition, the said composition is capable of forming a deposit that has a transfer of less than or equal to 35%. Application to making up and caring for keratin materials, especially the skin and the lips.

Abstract: The invention provides a cosmetic lipcare and/or lip makeup composition comprising at least one cosmetically acceptable organic liquid medium and a dispersion of a grafted ethylenic polymer, the said polymer being such that, when dispersed in sufficient amount in the composition, the composition is able to form a deposit having a transfer of less than or equal to 35%.

Abstract: The present invention relates to a nail varnish composition comprising, in a cosmetically acceptable medium, at least one particular block polymer, the said composition being free of nitrocellulose and having a mean gloss greater than 50 out of 100. A subject of the invention is also the use of such a composition to obtain a film, deposited on the nails, which is glossy and which shows good staying power and wear resistance.

Abstract: The invention relates to a lip makeup composition comprising at least one organic liquid medium and at least one film-forming linear block ethylenic polymer, the said polymer being such that, when it is present in sufficient amount in the composition, the said composition is capable of forming a deposit that has a resistive index of greater than or equal to 80%.

Abstract: The invention relates to a cosmetic composition comprising, in a cosmetically acceptable medium, at least one dispersion of particles of a non-silicone-based grafted ethylenic polymer in a liquid fatty phase. Use for making up and caring for keratin materials, especially the skin and the lips.

Abstract: Composition for coating keratin fibres with a high dry extract comprising a block polymer A subject of the invention is a composition for coating keratin fibres comprising, in a cosmetically acceptable medium, a block polymer, a styrene-free block polymer, the said composition having a dry matter or dry extract content of greater than or equal to 45% by weight. A subject of the invention is also the use of such a composition for obtaining a makeup for the keratin fibres, in particular the eyelashes, which is charging and/or homogeneous and/or smooth and/or has good staying power.

Abstract: The present disclosure relates to cosmetic compositions comprising particles of at least one polymer dispersed in a fatty phase, wherein the fatty phase is free of volatile oil or comprises less than 50% by weight of volatile oil, relative to the weight of the fatty phase. The polymer may be such that when it is dispersed in the composition in sufficient amount, the composition is capable of forming a deposit having a resistance index of greater than or equal to 30%.

Abstract: Disclosed is a hyperbranched copolymer comprising at least two polymeric branches, which may be identical or different, each comprising at least one at least trifunctional branch point, wherein a first polymeric branch comprises at least one first monomer chosen from isobornyl acrylate, isobornyl methacrylate, isobutyl acrylate, isobutyl methacrylate and 2-ethylhexyl acrylate, a second polymeric branch comprises at least one second monomer chose from isobornyl acrylate, isobornyl methacrylate, isobutyl acrylate, isobutyl methacrylate and 2-ethylhexyl acrylate. Also disclosed is a cosmetic or pharmaceutical composition, for example, a dermatological composition, comprising said hyperbranched copolymer. Further disclosed is a cosmetic method of making up or caring for keratin materials, comprising applying to said materials a cosmetic composition comprising said hyperbranched copolymer.

Abstract: The present disclosure relates to a cosmetic composition comprising particles of at least one polymer dispersed in a fatty phase, the at least one fatty phase is free of volatile oil or comprises less than 50% by weight of volatile oil relative to the weight of the at least one fatty phase, and the liquid fatty phase comprising at least 5% by weight of at least one sparingly polar or apolar oil. The apolar or sparingly polar oil may be, for example, a non-volatile hydrocarbon-based apolar oil.

Abstract: The disclosure provides styling cosmetic compositions comprising, in a cosmetically acceptable medium predominantly comprising water, at least one pseudo-block polymer, cosmetic treatment processes for shaping and/or holding the hairstyle employing the cosmetic compositions and also to uses of the cosmetic compositions for obtaining shaping of the hair that is persistent over time and shaping of the hair that is moisture-resistant.

Abstract: Non-rinsed cosmetic keratin fibre care or makeup composition, comprising at least one fatty phase comprising at least one structuring agent consisting of the combination of a specific compound and at least one oil, said composition containing no waxes and exhibiting a solids content defined by a dry solids extract of more than 45% by weight.

Abstract: Linear block ethylenic copolymer comprising: at least two blocks with different glass transition temperatures (Tg); at least one of these blocks having a glass transition temperature of greater than or equal to 20° C.; said polymer also having mechanical parameters that satisfy at least one of the following three conditions: a Young's modulus E such that: 500 MPa?E?2000 MPa; an ultimate strain ?r such that: 5%??r?50%; an ultimate strain energy wr such that: 0.1×105 J/m3<wr<150×105 J/m3. Cosmetic composition comprising said polymer. The copolymer makes it possible to improve the styling power and the hold of a hair lacquer, to increase the adhesion and the wear strength of a nail varnish and to improve the staying power of a makeup composition without the compositions being tacky.

Abstract: The present disclosure relates to a composition, for example, a cosmetic composition for caring for or making up the skin and/or epidermal derivatives and/or lips, which comprises a) at least one liquid fatty phase, b) a dispersion of at least one polymer particle dispersed in the at least one liquid fatty phase, and c) at least one compound chosen from esters of aliphatic and aromatic polycarboxylic acids and aliphatic and aromatic alcohols comprising from 1 to 10 carbon atoms, the at least one compound being present in an amount sufficient to plasticize the at least one polymer particle. The present invention likewise relates to a cosmetic composition for caring for and making up the skin and/or epidermal derivatives and/or lips, which comprises a physiologically acceptable medium comprising a) at least one liquid fatty phase, b) a dispersion of at least one polymer particle dispersed in the at least one liquid fatty phase, and c) at least one compound having a solubility parameter, &dgr;h, ranging from 5.

Abstract: The invention relates to self-stabilized dispersions of polymer particles in a non-aqueous non-silicone medium, and to a process for preparing the said polymers. The invention also relates to cosmetic or pharmaceutical compositions comprising the said polymer particle dispersions.

Abstract: The present invention relates to polyurethanes and a process for preparing them. These polyester polyurethanes contain units corresponding to the following formulae (I) and (II): The polyester polyurethanes according to the present invention form pseudolatices and may be utilized as film-forming resin in cosmetic compositions.

Abstract: The invention relates to self-stabilized dispersions of polymer particles in a silicone medium, and to cosmetic or pharmaceutical compositions comprising the said polymer particle dispersions.

Abstract: The invention relates to water-soluble amphiphilic cationic associative polyurethanes of formula R—X—(P)n[L-(Y)m]r-L′-(P′)p—X′—R′, the molecule comprising at least one protonated or quaternized amine functional group and at least one hydrophobic group. The invention also relates to the use of these polyurethanes as thickeners or gelling agents in cosmetic compositions for topical application.

Abstract: The present invention relates to a nail varnish composition comprising, in a cosmetically acceptable medium comprising at least one organic solvent, at least one block polymer, the composition being capable of forming a film with a tangent delta (tg&dgr;) dampening power of greater than or equal to 0.4 at a temperature of 30° C. and a frequency of 20 Hz. A further subject of the invention is a method for producing a glossy film comprising applying to nails such a composition, wherein a glossy film is produced and which shows good staying power and/or wear resistance.