Rhodia Chimie

Rhodia Operations

Centre National De La Recherche Scientifique

Other

Vencorex Frence

Phodia Chimie

Université Paul Sabatier (Toulouse III)

Vencorex France

Mathias Destarac

Dominique Charmot

Bernard Boutevin

Bruno Thierry Bavouzet

Pascal Herve

Samir Z Zard

Agnieszka Zofia Wilczewska

James Wilson

Daniel Taton

Mathieu Joanicot

Olivier Anthony

Gérard Mignani

Yves Gnanou

Chakib Kalai

Arnaud Cadix

David James Wilson

Roland Reeb

Frédéric Leising

Natalie Cadena

Hervé Adam

Isabelle Gauthier-Gillaizeau

Alex Dureault

Stéphane Mazieres

Gerard Mignani

Jean-Yves Chane-Ching

Etienne Fleury

Evelyne Prat

Ian Michael Harrison

Marie-Pierre Labeau

Guillaume Criniere

Gilda Maria Lizarraga

Ghislain David

Wojciech Bzducha

Katerina Karagianni

Zofia Agnieszka Wilczewska

Aymeric Guinaudeau

Silvia Stoilova

Antoine Baceiredo

Tsuyoshi Kato

Cécile Bonnet-Gonnet

Claire Pitois

Béatrice Sire

Cédric Geffroy

Corine Gerardin

Xavier Franck

C&eacute;cile Bonnet-Gonnet

Roya Farhoosh

Jean-Marie Schwob

Gary Woodward

Thíerry Hamaide

Ramiro Guerrero-Santos

Gopakumar Sivasankarapillai

Fabien Bonnette

Iñigo Gonzalez

Morgan Tizzotti

Eric Drockenmuller

Simon Harrisson

Olivier Coutelier

Ihor Kulai

James David Wilson

Graham Otter

The present invention relates to a method for preparing an aqueous dispersion of water-soluble polymers, which comprises a step (E) of radical polymerization, wherein the following are brought into contact in an aqueous medium (M) in which the synthesised polymer is not soluble:

Controlled radical polymerization in water-in-water dispersion

The present invention relates to a method for preparing an aqueous dispersion of water-soluble polymers, which comprises a step (E) of radical polymerization, wherein the following are brought into contact in an aqueous medium (M) in which the synthesized polymer is not soluble:

The present invention concerns a process for preparing a polymer comprising at least one gel polymerization step (E) in which the following are contacted:

Preparation of hydrophilic polymers of high mass by controlled radical polymerization

The present invention relates to the preparation of block copolymers, which can be used in particular as rheology agents, suitable, inter alia, for oil extraction, comprising a step of radical micellar polymerization wherein the following are brought into contact in an aqueous medium: &#x2014;hydrophilic monomers, dissolved or dispersed in the aqueous medium; &#x2014;hydrophobic monomers in the form of a micellar solution, i.e. containing, in a dispersed state, micelles comprising these hydrophobic monomers; &#x2014;at least one radical polymerization initiator; and &#x2014;at least one radical polymerization control agent. The polymers obtained according to the invention can be used in particular for enhanced oil recovery (EOR).

Preparation of amphiphilic block polymers by controlled radical micellar polymerisation

The present invention relates to a method for preparing a polymer based on N-vinyl lactam monomer units, which comprises a step (E) for controlled radical polymerization of a composition comprising:

Controlled free-radical polymerization of N-vinyl lactams in an aqueous medium

The present invention concerns a method for preparing a polymer comprising a step (EI) for dispersed phase polymerization in the presence of a reactive stabiliser, wherein the following are brought into contact in an aqueous phase:&#x2014;at least one ethylenically unsaturated monomer; &#x2014;at least one source of free radicals; and&#x2014;a reactive stabiliser comprising a polymer chain including monomer units (N-vinyl lactam) and a thiocarbonylthio-S group (C&#x2550;S)&#x2014;.

Live poly(n-vinyl lactam) reactive stabilizers for dispersed phase polymerization

The present invention concerns a method for the dispersed phase polymerization of halogenated vinyl compounds, having the formula RRC&#x2550;CXX, where: X&#x2550;F or CI, X&#x2550;H, F or CI, each of Rand R, separately represents: &#x2014;H, CI, F; or&#x2014;an alkyl group, preferably chlorinated and/or fluorinated, and more advantageously perchlorinated or perfluorinated, comprising a step (E1) wherein said monomers are introduced into an aqueous phase together with&#x2014;at least one source of free radicals; and&#x2014;at least one reactive stabilizer comprising a polymer chain and a thiocarbonylthio-S group (C&#x2550;S)&#x2014;, said polymer chain comprising non-(N vinyl lactam)monomer units.

Dispersed phase polymerization of halogenated vinyl monomers in the presence of live reactive stabilizers

The invention relates to novel hybrid compounds containing at least one polysaccharide entity (PS), such as guar, in which at least one hydroxyl function is substituted by at least one A polyoxyalkylene entity (PEG). The swivel Ro between the entity PS and the entity A is obtained by click chemistry and has the following formula (IL1) or (IL2), in which Z is a carbon or nitrogen atom. These hybrid compounds can be used as emulsifiers, particularly in cosmetics.

Hybrid compounds containing polysaccharide(s) and at least one polyoxyalkylene, method for preparing same, and applications thereof

The present invention relates to a process for preparing a compound comprising at least a urethane group &#x2014;HN&#x2014;C(&#x2550;O)&#x2014;O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group &#x2014;N&#x2550;C&#x2550;O is reacted with an organic compound (II) carrying at least a hydroxyl group &#x2014;OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst.

Synthesis of urethanes and polyurethanes catalysed by carbenes

The invention concerns an aqueous composition comprising particles of a water-soluble or water-dispersible chemical microgel, associated with at least a water-soluble or water-dispersible crosslinking polymer, differing in composition from the particles; the amount of chemical microgel particles ranging between 0.05 to 40% by dry weight of the composition and the amount of crosslinking polymer being such that the viscosity of the composition is at least three times higher than that of an aqueous solution of chemical microgel particles and than that of an aqueous solution of crosslinking polymer, in similar conditions. The invention also concerns said composition, its use and formulations comprising same.

Aqueous compositions comprising a chemical microgel associated with an aqueous polymer

Colloidal dispersions of inorganic particles in a liquid phase include ampholytic copolymers containing at least one macromolecular chain B and a moiety A bonded to a single end thereof and in which the macromolecular chain B includes cationic units Bc, deriving from cationic monomers Bc and the moiety A is a polymeric or non-polymeric group containing at least one anionic or potentially anionic group; such dispersions may have a positive zeta potential within a pH ranging from 1 to 11.

Colloidal dispersions of inorganic particles in liquid phases comprising ampholytic copolymers

The present invention relates to a cosmetic composition comprising at least one diblock copolymer, as well as to the use of the said diblock copolymer as a modifier of properties of cosmetic compositions, more preferably of compositions for the skin and/or the hair. The diblock copolymer comprises two blocks, block A and block B, wherein block A is a polycationic block and block B is a neutral block.

Cosmetic composition comprising a block copolymer

The present invention concerns a controlled structure copolymer comprising at least two different parts, a first part A, amphoteric or zwitterionic, including anionic or potentially anionic units, and cationic or potentially cationic units, or zwitterionic units, and another part B, non amphoteric or zwitterionic. Said copolymer further exhibits a high potential for adaptation, through variation in its composition, in order to improve or modify the properties of compositions in which it is introduced.

Controlled structure copolymer comprising an amphoteric or zwitterionic part

The invention relates to a method of preparing statistical microgels. The inventive method comprises a step involving the radical polymerisation of a composition containing: at least one monoethylenically-unsaturated monomer, at least one multiethylenically-unsaturated monomer, a free radical source and a control agent. The invention also relates to first generation microgels thus prepared and all the compounds resulting from said microgels (next-generation microgels).

Synthesis of statistical microgels by means of controlled radical polymerisation

The invention relates to a formulation comprising an ionic compound and a polyionic polymer. The invention more specifically relates to an improved formulation thereof, further comprising a copolymer. The improved formulation avoids phase-separation of colloidal particles comprising the ionic compound and the polyionic polymer. The formulation comprises a copolymer comprising two moieties A and B, wherein moiety A is polyionic in the pH conditions of the formulation, and moiety B is neutral in the pH conditions of the formulation.

Formulation comprising an ionic compound, a polyionic polymer, and a block copolymer

Growing community of inventors

Paris, France

Mathias Destarac