FROM-MELT FORMED POLYSULFONE SEMIPERMEABLE MEMBRANES AND METHOD OF PREPARATION THEREOF Russian patent published in 2003 - IPC

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