METHOD FOR PRODUCING GEL-TYPE CATION EXCHANGERS

Spherical copolymers prepared by a seed/feed process with a feed comprising vinylaromatic compounds, divinylbenzene, methyl acrylate, and free-radical initiator can be converted into cation exchangers in gel form having high stability and purity by sulfonation in the absence of a swelling agent.

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Bibliographische Detailangaben
Hauptverfasser:	KLIPPER, REINHOLD, SCHNEGG, ULRICH, SCHMID, CLAUDIA, PODSZUN, WOLFGANG
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G APPARATUS SPECIALLY ADAPTED THEREFOR 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 PRODUCTION OF SUCROSE SUGAR INDUSTRY THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE WORKING-UP
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Beschreibung
Zusammenfassung:	Spherical copolymers prepared by a seed/feed process with a feed comprising vinylaromatic compounds, divinylbenzene, methyl acrylate, and free-radical initiator can be converted into cation exchangers in gel form having high stability and purity by sulfonation in the absence of a swelling agent.