AQUEOUS DISPERSIONS OF POLYMER PARTICLES

The invention provides a method for preparing an aqueous dispersion of polymer particles comprising the following steps: (i) preparing a dispersion having a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and an amphiphilic RAFT agent as...

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Bibliographische Detailangaben
Hauptverfasser:	SUCH, CHRISTOPHER HENRY, HAWKETT, BRIAN STANLEY, GILBERT, ROBERT GOULSTON, HUGHES, ROBERT JOHN, SERELIS, ALGIRDAS KAZIMIERAS, FERGUSON, CHRISTOPHER JAMES, RIZZARDO, EZIO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention provides a method for preparing an aqueous dispersion of polymer particles comprising the following steps: (i) preparing a dispersion having a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and an amphiphilic RAFT agent as a stabiliser for said organic phase, and (ii) polymerising said one or more ethylenically unsaturated monomers under the control of said amphiphilic RAFT agent to form said aqueous dispersion of polymer particles, novel amphiphilic RAFT agents for use in this method, novel RAFT agents useful in making these amphiphilic RAFT agents and methods for their manufacture. L'invention concerne un procédé de préparation d'une dispersion aqueuse de particules de polymère consistant (i) à préparer une dispersion comprenant une phase continue, une phase organique dispersée contenant un ou plusieurs monomères à insaturations éthyléniques et un agent amphiphile de transfert de chaîne par fragmentation-addition réversible (RAFT) en tant qu'agent de stabilisation de la phase organique, et (ii) à polymériser les monomères à insaturations éthyléniques sous régulation de l'agent amphiphile RAFT afin d'obtenir la dispersion aqueuse de particules de polymère. L'invention concerne aussi des agents amphiphiles RAFT utilisés dans le procédé, des agents RAFT utiles dans la fabrication de ces agents amphiphiles RAFT, ainsi que leurs procédés de fabrication.