Sintered absorbents prodn - by halogen treatment of sintered polymer powder for filter candles

Sinter absorbent article is produced by treating sintered polymer powder with halogens. Prod. can absorb liquids, esp., water. The halogens should be diluted with inert gas to prevent excessive temp. rise and the reaction is pref. carried out in the dark. Treatment is suitable for all thermoplastic...

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Bibliographische Detailangaben
Hauptverfasser:	MERKEL,HELMUT,DR, PFIRRMANN,GUENTHER,DR, ZEITLER,GERHARD,DR, GEORGII,BENEDIKT
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	Sinter absorbent article is produced by treating sintered polymer powder with halogens. Prod. can absorb liquids, esp., water. The halogens should be diluted with inert gas to prevent excessive temp. rise and the reaction is pref. carried out in the dark. Treatment is suitable for all thermoplastic filter candles, esp., of polyethylene, polypropylene and polystyrene and also halogenated polymers, esp., PVC.