PRODUCTION OF FINE PARTICLE OF ACRYLONITRILE-BASED POLYMER

PURPOSE:To produce spherical and porous fine particles of acrylonitrile-based polymer having especially 1-10mum average particle size in readily control of particles diameters. CONSTITUTION:A mixed solvent of (a) 50-95wt.% hydrophilic solvent dissolving an acrylonitrile-based monomer and an acryloni...

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Hauptverfasser:	MIZOGUCHI MASATAKA, MIYAMORI SHIGEO, TAKAHASHI KAZUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To produce spherical and porous fine particles of acrylonitrile-based polymer having especially 1-10mum average particle size in readily control of particles diameters. CONSTITUTION:A mixed solvent of (a) 50-95wt.% hydrophilic solvent dissolving an acrylonitrile-based monomer and an acrylonitrile-based polymer produced by polymerization or showing affinity for the monomer and the polymer and (b) 50-5wt.% hydrophilic solvent showing solubility in and affinity for the acrylonitrile-based monomer but not affinity for the acrylonitrile-based polymer produced by polymerization is used as a dispersion medium and the acrylonitrile- based monomer is subjected to dispersion polymerization in the dispersion.