IMPROVED AND STABLE CATALYST-CONTAINING POLYURETHANE GENERATING COMPOSITIONS WHICH ARE NOT CYTOTOXIC AFTER CURING AND SEPARATING DEVICES USING SAME

摘要

P AT LEAST ONE NCO-TERMINATING PREPOLYMER AND AT LEAST ONE POLYOL SHOULD BE REACTED IN THE PRESENCE OF A CATALYST COMPOSITION BASED ON DIALCOYL DICARBOXYL TIN. THE CATALYST REDUCES THE CURING TIME OF THE POLYURETHANE RESIN AND IT CAN NOT BE RELEASED THEREFROM. IMPROVED POLYURETHANE COMPOSITIONS ARE ENABLABLY IMPLEMENTED IN SEPARATING DEVICES SUCH AS HOLLOW FIBER SEPARATOR DEVICES FOR BIOMEDICAL APPLICATIONS. THE SEPARATING DEVICE USING AT LEAST ONE SEPARATION MEMBRANE SUITABLE FOR THE INTENDED USE, WHICH MEMBRANE IS FIXED, ENCAPSULATED, SEALED OR COATED USING A FLEXIBLE CURED POLYURETHANE COMPOSITION. / P