Process for dispersing solid particles in particulate polymers

Details Process for dispersing solid particles in particulate polymers Process for dispersing solid particles in particulate polymers

C - Chemistry, Metallurgy

08

J

C08J 3/07 (2006.01) C08J 3/14 (2006.01) C08K 9/04 (2006.01)

Patent

CA 2630906

Process for dispersing solid particles in a particulate polymer, which comprises the steps of : (a) forming a solution (OS) of particles of a polymer (P1) in an organic solvent (S); (b) forming an aqueous dispersion (AD) of solid particles (P2); (c) mixing said solution (OS) with said dispersion (AD) as to obtain a liquid mixture (M), while avoiding substantial precipitation of either polymer (Pl) or particles (P2); (d) mixing said liquid mixture (M) with a non solvent (NS) as to obtain a slurry (SL) comprising particles (P3); a phase transfer agent (PTA) being further present during steps (b), (c) and/or (d).

Procédé de dispersion de particules solides dans un polymère particulaire, comprenant les étapes consistant à : (a) former une solution (OS) de particules d'un polymère (P1) dans un solvant organique (S) ; (b) former une dispersion aqueuse (AD) de particules solides (P2) ; (c) mélanger ladite solution (OS) avec ladite dispersion (AD) afin d'obtenir un mélange liquide (M) tout en évitant une précipitation notable du polymère (P1) ou des particules (P2) ; (d) mélanger ledit mélange liquide (M) avec un non-solvant (NS) afin d'obtenir une suspension dense (SL) comprenant des particules (P3) ; un agent de transfert de phase (PTA) étant en outre présent lors des étapes (b), (c) et/ou (d).

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