FROM-MELT FORMED POLYSULFONE SEMIPERMEABLE MEMBRANES AND METHOD OF PREPARATION THEREOF

FIELD: semipermeable membranes. SUBSTANCE: invention relates to technology of preparing polysulfone membranes that can be used to separate liquids, in particular for microfiltering, ultrafiltration, dialysis, and reverse osmosis. Membranes are prepared by stirring homogenous composition containing p...

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Bibliographische Detailangaben
Hauptverfasser:	VASHINGTON DZHORDZH, DZHAANIN KHAMID, NGUJEN TANKH, RUZIUS KIS, CHIANG CHUNG-JUAN, SILVA LALIT K, MELUK TIMOTI B
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	FIELD: semipermeable membranes. SUBSTANCE: invention relates to technology of preparing polysulfone membranes that can be used to separate liquids, in particular for microfiltering, ultrafiltration, dialysis, and reverse osmosis. Membranes are prepared by stirring homogenous composition containing polysulfone compound, solvent such as sulfolane, antipyrin, deltavalerolactam, diethyl phthalate, and their mixtures, and nonsolvent such as polyethylene glycol, diethylene glycol, triethylene glycol, glycerol, and their mixtures. Composition is melted and subjected to from-melt formation of membranes. EFFECT: enabled convenient preparation of membranes with good physicochemical properties, biological compatibility, and resistance to bleaching agents, disinfecting substances, and salt solutions. 56 cl, 4 dwg, 7 ex