SUBMICROSCOPIC PARTICLES OF ANION EXCHANGE RESIN AND ANION EXCHANGE PROCESS USING THEM

Submicroscopic particles of anion exchange resin comprise approximately spherical beads of crosslinked copolymer having diameters of 0.01 to 1.5 micrometers and bear 0.7 to 1.5 anion exchange functional groups per monomer unit. The particles may be used in the removal of ionic impurities from liquid...

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Bibliographische Detailangaben
1. Verfasser:	CHONG, BERNI PATRICIA
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	Submicroscopic particles of anion exchange resin comprise approximately spherical beads of crosslinked copolymer having diameters of 0.01 to 1.5 micrometers and bear 0.7 to 1.5 anion exchange functional groups per monomer unit. The particles may be used in the removal of ionic impurities from liquids and may subsequently be separated from the treated liquids by flocculation. The particles may be made by emulsion polymerization followed by coagulation of the emulsion polymer beads, separation of the resulting coagulum particles from the emulsion polymerization medium and functionalization of the beads, which in some cases will remain as coagulum particles and in other cases will redisperse during functionalization. Also of interest are chloromethylated intermediates for the functionalized resin.