ULTRAFILTRATIONSMEMBRANEN AUS LINEAREN POLYURETHANEN

An ultrafiltration membrane comprised of a linear polyurethane having a hydraulic permeability for water of about 50 to 500 1/m2 x h and a separation factor alpha of about 2x10-3 to 1x10-4, the permeability being based on determination with a membrane of a thickness of about 0.02 mm, a pressure diff...

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Bibliographische Detailangaben
Hauptverfasser:	ROESENER W, HOHM E, BEHNKE J, GERLACH K
Format:	Patent
Sprache:	ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON FUELS GENERAL PROCESSES OF COMPOUNDING LUBRICANTS LUBRICATING COMPOSITIONS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION WORKING-UP
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Beschreibung
Zusammenfassung:	An ultrafiltration membrane comprised of a linear polyurethane having a hydraulic permeability for water of about 50 to 500 1/m2 x h and a separation factor alpha of about 2x10-3 to 1x10-4, the permeability being based on determination with a membrane of a thickness of about 0.02 mm, a pressure differential of 1 bar and a temperature of 20 DEG C. and the separation factor alpha being established with a 2% oil-water emulsion at 25 DEG C. The membrane is particularly suited for operation of oil-water mixtures or emulsions.