L'oreal

Loreal Sa

Bertrand Lion

Jean Aulnay Mondet

Nathalie Mougin

Christine DuPuis

Béatrice Toumi

Jean-Michel Sturla

Bertrand Piot

Jean-Thierry Simonnet

Henri Sebag

Didier Candau

Andrew Greaves

Roland De La Mettrie

Pascal Simon

François Cottard

Véronique Ferrari

Colette Cazeneuve

Nathalie Martin

Julien Portal

Laurent Sabatie

Xavier Blin

Nathalie Jager Lezer

Karine Lucet-Levannier

Xavier Schultze

Val&eacute;rie De La Poterie

Isabelle Rollat-Corvol

Céline Farcet

Franck Hernandez

Katarina Benabdillah

Dani&eacute;le Cauwet-Martin

Fr&eacute;d&eacute;ric Leuridan

Dolores Colombel

Elise Maury

Anne Potter

The invention relates to a cosmetic process for caring for or making up keratin materials, comprising the topical application to the keratin materials of a cosmetic composition comprising a phosphonic polymer derived from the polymerization of: (a) 45% to 95% by weight of ethylenic monomer bearing an at least Clinear or branched alkyl group; (b) 5% to 25% by weight of vinylphosphonic acid monomer; (c) 0 to 50% by weight of additional monomer chosen from linear or branched CCalkyl (meth)acrylates, C-Ccycloalkyl (meth)acrylates, and polydimethylsiloxanes bearing a mono(meth)acryloyloxy end group, optionally combined with an additional compound chosen from polyamine compounds bearing several primary amine and/or secondary amine groups, aminosilanes, salts of divalent or trivalent metal ions, clays and metal oxides. The process makes it possible to obtain a film-forming deposit that has good resistance to water, to oil and to sebum. The film is also non-tacky and transfer-resistant. The invention also relates to polymers containing the three monomers (a), (b) and (c).

Phosphonic ethylenic polymer and cosmetic uses thereof

The invention relates to a cosmetic process for treating keratin materials, comprising: either the sequential application to the keratin materials of a composition comprising a maleic anhydride ethylenic polymer and of an amine compound chosen from polyamine compounds bearing several primary amine and/or secondary amine groups and amino alkoxysilanes, or the topical application to the keratin materials of a composition derived from the mixing of a composition comprising a maleic anhydride acrylic polymer and of an amine compound chosen from amino alkoxysilanes; the ethylenic polymer being derived from the polymerization of: (a) 45% to 95% by weight, relative to the total weight of monomers, of an ethylenic monomer bearing an at least C8 linear or branched alkyl group; (b) 5% to 25% by weight of maleic anhydride; (c) 0 to 50% by weight of additional monomer; the compositions used being anhydrous when the amine compound is an amino alkoxysilane. The process makes it possible to obtain a film-forming deposit that has good resistance to water, to oil and to sebum. The film is also non-tacky and transfer-resistant.

Cosmetic process for treating keratin materials with a maleic anhydride ethylenic polymer

The invention relates to a copolymer resulting from the polymerization of: (i) 70% to 95% by weight, of the total weight of the monomers, of isobornyl (meth)acrylate; (ii) 1% to 30% by weight of vinylphosphonic acid monomer; (iii) 0 to 20% by weight of an additional monomer. The invention also relates to a cosmetic composition comprising the copolymer and to a cosmetic process for caring for or making up keratin materials, comprising the topical application of the composition to the keratin materials. It also relates to the use of the copolymer as a skin-tensioning agent.

Phosphonic copolymer and use thereof in the cosmetics field

Process for treating keratin fibres with an ethylenicpolymer bearing a maleic anhydride group and a polyol The invention relates to a cosmetic process for treating keratin fibres, comprising the application to the keratin fibres of a mixture of a maleic anhydride ethylenic polymer, a liposoluble polyol and an amine catalyst; said maleic anhydride ethylenic polymer being obtained by polymerization of: (a) 25% to 95% by weight, relative to the total weight of monomers, of an ethylenic monomer bearing an at least C8 linear or branched alkyl group; (b) 5% to 25% by weight of maleic anhydride; (c) 0% to 50% by weight of additional (meth)acrylate monomer; and a step of heating the keratin fibres to a temperature ranging from 90&#xb0; C. to 250&#xb0; C. The invention also relates to the crosslinked polymer obtained by reacting said ethylenic polymer with said liposoluble polyol. The treated keratin fibres have good water-resistant fixing properties.

Process for treating keratin fibres with an ethylenic polymer bearing a maleic anhydride group and a polyol

The invention relates to a copolymer resulting from the polymerization of: The invention also relates to a composition comprising said copolymer in a physiologically acceptable medium. The invention also relates to a cosmetic method for caring for or making up the skin or the lips, comprising the topical application, to the skin or the lips, of a cosmetic composition comprising said copolymer.

Acrylic polymer of maleic anhydride and use thereof in cosmetics

A photoprotective composition, in particular a cosmetic composition, that includes particles of photonic material having a polymeric multilayer interference structure, where at least two layers of the structure contain an amphiphilic polymer.

Photoprotective compositions and films, and a preparation method

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.

Styling composition comprising, in a predominantly aqueous medium, a pseudo-block polymer, processes employing same and uses thereof

Disclosed herein are novel block polymers comprising at least one first block and at least one second block, wherein the at least one first block comprises at least one acrylate monomer of formula CH&#x2550;CH&#x2014;COORwherein Ris chosen from Cto Ccycloalkyl groups and at least one methacrylate monomer of formula CH&#x2550;C(CH)&#x2014;COOR'wherein R&#x2032;is chosen from Cto Ccycloalkyl groups, and the second block comprises at least one acrylic acid monomer and at least one monomer with a glass transition temperature of less than or equal to 20&#xb0; C. Also disclosed herein is a process for the preparation of such polymers which may be carried out continuously in a single reactor. Finally, further disclosed herein are compositions comprising the novel polymers and processes using the composition for making up and/or caring for keratinous substances or for improving the hold of a cosmetic composition while maintaining its gloss.

Block polymers and their process of preparation

A linear, block copolymer, which is useful in cosmetics and improves the styling power and hold of hair laquer, adhesion of nail varnish and hold/adhesion of makeup, includes at least two blocks having different glass transition temperatures, Tg; where at least one of said blocks has a glass transition temperature of 20&#xb0; C. to &#x2212;100&#xb0; C., and wherein the at least one block having a Tg of 20&#xb0; C. to &#x2212;100&#xb0; C. is a copolymer B having a first monomer wherein the Tg of the corresponding homopolymer is in the range from more than 20&#xb0; C. to 200&#xb0; C., and a second monomer wherein the Tg of the corresponding homopolymer is in the range from 20&#xb0; C. to &#x2212;100&#xb0; C.

Adhesive block ethylenic copolymers, cosmetic compositions containing them and cosmetic use of these copolymers

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.

Block polymers and cosmetic compositions and processes comprising them

A cosmetic composition where a linear, block ethylenic copolymer is dissolved in a physiologically acceptable medium, wherein the linear, block ethylenic copolymer improves the hold of hair lacquer, increases the adhesion of a nail varnish and improves the hold and adhesion of makeup.

A cosmetic composition of a linear, block ethylenic copolymer dissolved in a physiologically acceptable medium where the linear, block ethylenic copolymer includes at least two blocks having different glass transition temperatures, Tg; and one of the blocks is a copolymer of different monomers chosen from acrylates and/or methacrylates.

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.

Growing community of inventors

Luzarches, France

Bertrand Lion