| abstract |
PROBLEM TO BE SOLVED: To produce a stable and storable cellulose dialysis membrane and a cellulose dialysis membrane. Cellulose having a degree of polymerization (DP)> 300 and / or modification having a degree of polymerization (DP)> 200. 3 to 40 parts of cellulose, tertiary amine oxide and 1 One or several other liquids, one or several stabilizers and optionally one or several pore formers, other spinning solution additives and optionally low molecular weight organic or inorganic compounds and / or Or a mixture 97-6 composed of a synthetic polymer Preparation of a spinning solution from 0 parts, extrusion of this solution through a nozzle into a precipitation bath, washing or extraction of the resulting membrane in one or several steps, and optionally one or several The treatment in the bath containing the pore stabilizer, the avibarge of the membrane and the drying and, if appropriate, the corrugation of the membrane before drying and the winding of the membrane are carried out. |