Abstract: The present invention relates to novel block polymers comprising at least one first block and at least one second block that are incompatible with each other, have different glass transition temperatures (Tg), and are linked together via an intermediate segment comprising at least one constituent monomer of the at least one first block and at least one constituent monomer of the at least one second block. The block polymer has a polydispersity index I of greater than 2. The invention also relates to cosmetic compositions comprising the block polymers and processes for their use.

Abstract: Disclosed herein is a nail varnish composition comprising, in a cosmetically acceptable medium, at least one film-forming polymer, wherein the varnish composition is capable of forming a film having an adherence, measured according to the ASTM D 3359-7 standard, corresponding to a percentage of detachment of less than 35%, as well as a method for making up and/or non-therapeutic caring of nails comprising applying to the nails the nail varnish composition.

Abstract: The present invention relates to polyurethanes and a process for preparing them.

Abstract: Linear block ethylenic copolymer, comprising:

Abstract: The invention relates to novel amphiphilic cationic associative polyurethanes of formula (I):

Abstract: A cosmetic composition comprising at least one continuous liquid fatty phase containing at least one hydrocarbon-based oil and structured with at least one polymer chosen from polyurethanes, polyurethaneureas, and polyureas, said at least one polymer being soluble or dispersible in said at least one hydrocarbon-based oil, and wherein said at least one polymer comprises in the chain thereof and/or grafted thereto:

Abstract: A cosmetic composition comprising, in a cosmetically acceptable medium, at least one film-forming polymer (A) chosen so that a material, obtained by drying the at least one polymer (A) in an aqueous or alcoholic medium at ambient temperature and at a relative humidity of 50%±5%, exhibits a mechanical profile defined by at least:

Abstract: A cosmetic composition comprising at least one continuous liquid fatty phase containing at least one hydrocarbon-based oil and structured with at least one polymer chosen from polyurethanes, poliyurethaneureas, and polyureas, said at least one polymer being soluble or dispersible in said at least one hydrocarbon-based oil, and wherein said at least one polymer comprises in the chain thereof and/or grafted thereto:

Abstract: The invention features a composition for treating keratin materials in particular human hair, containing in a cosmetically and dermatologically acceptable aqueous medium at least: a) a polyampholyte polymer comprising in the chain or in a lateral position relative to the chain, equimolar or practically equimolar amounts of negative charges and positive charges; the said polymer being water-insoluble at a concentration of 0.1% by weight or above and at 20° C.; b) a non-volatile, water-insoluble organopolysiloxyne of a viscosity higher than 3.10−5 m2/s (300 centistokes).

Abstract: The subject-matter of the present invention is the use, in and for the preparation of cosmetic or dermatological compositions, of a grafted copolymer, the skeleton (S) of which is composed of a hydrophilic copolymer, with a glass transition temperature Tg greater than 25° C., obtained by radical polymerization or by polycondensation, comprising, on the chain of the skeleton (S), at least one graft composed of a hydrophobic macromonomer (M) with a glass transition temperature T'g of less than 25° C., as well as the cosmetic or dermatological compositions employed.

Abstract: The present invention relates to hair-care compositions comprising aqueous polymer dispersions as film-forming agent. These polymers are obtained by free-radical polymerization of a radical monomer in the interior and/or partially at the surface of already existing polymer particles of polyester type.

Abstract: A nail varnish or nailcare composition containing an aqueous dispersion of particles of acrylic polymer having a glass transition temperature (Tg) greater than or equal to 45° C. and a minimum film-forming temperature (MFT) such that Tg−MFT≦20° C., a first organic solvent having a boiling point measured at ambient pressure of greater than or equal to 225° C. and a second organic solvent having a boiling point measured at ambient pressure ranging from 70° C. to 180° C. A method of making up and/or caring for the nails which includes applying the composition to the nails. The nail composition is adherent to the nail, is bright and is easily removed with conventional removers.

Abstract: A cosmetic or dermatological composition comprising a graft copolymer having a backbone comprising a copolymer with a glass transition temperature ranging from 0 to 30.degree. C., capable of being obtained by radical polymerization or by polycondensation and comprising on the backbone chain at least one graft unit including a hydrophobic macromonomer with a glass transition temperature higher than 25.degree. C.

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): ##STR1## The polyester urethanes according to the present invention form pseudolatices which may be utilized in cosmetic compositions.

Abstract: The present application relates to hair-care compositions comprising aqueous polymer dispersions as film-forming agent. These polymers are obtained by free-radical polymerization of a radical monomer in the interior and/or partially at the surface of already existing polymer particles of polyester type.

Abstract: A composition comprising at least one film forming polymer and at least one oligomer chosen from homopolymers or copolymers of monomers containing ethylenic unsaturation and polycondensates, having an average molecular weight, measured at the peak height by steric exclusion chromatography, ranging from 400 to 10,000 and having a glass transition temperature ranging from -80 to 10.degree. C., the composition containing no film-forming polymer of the nitrocellulose type is disclosed.Topical formulations formulated from this composition, in particular hair compositions for styling, holding and/or fixing the hair, and make-up compositions are also disclosed.

Abstract: The subject of the present invention is the use, in, and for the preparation of, cosmetic or dermatological compositions, of a copolymer which can be obtained by copolymerization of a monomer mixture comprising:(a) from 5 to 25% by weight of at least one monomer (A) with ethylenic unsaturation containing at least one carboxylic acid function;(b) from 3 to 30% by weight of at least one monomer (B) of formula (I):H.sub.2 C=C(R.sub.1)--COOR.sub.2 (I)in whichR.sub.1 denotes a hydrogen atom or a methyl radical,R.sub.2 denotes a saturated or unsaturated, linear or branched or cyclic alkyl radical or an aromatic radical, having from 8 to 40 carbon atoms,(c) at least one monomer (C) chosen from the group consisting of tert-butyl methacrylate, tert-butyl acrylate and mixtures thereof, in a proportion greater than 50%, such that the glass transition (Tg) of the polymer is greater than or equal to 15.degree. C.

Abstract: An aqueous cosmetic composition for fixing hair includes an aqueous dispersion of: a) particles of a film-forming polymer containing carboxylic acid functions neutralized to a degree of neutralization of between 10 and 80% using a non-volatile monobasic agent, the particles having an average diameter of between 10 and 300 nm, and b) at least one plasticizing agent. The composition may be utilized in an aerosol lacquer, a fixing or setting lotion or a styling mousse.

Abstract: An aqueous cosmetic composition for fixing hair is an aqueous particulate dispersion. The dispersion includes particles of a film-forming polymer containing carboxylic acid functions neutralized to a degree of neutralization from between 10 and 80 percent using a non-volatile monobasic agent. The particles have an average diameter of between 10 and 300 nm. The aqueous dispersion also includes at least one plasticizing agent. The composition may be used as an aerosol lacquer, a fixing or setting lotion or a styling mousse.

Abstract: The present invention relates to a cosmetic or pharmaceutical composition comprising an aqueous dispersion of polymers, in particular as film-forming agent. The said aqueous dispersions are obtained by radical polymerization of radical monomer, within and/or partially at the surface, of preexisting particles of at least one polymer chosen from the group consisting of polyurethanes and/or polyureas.