Patent ID: 7968153
Filing Date: 2011-06-28
Classification: B01D,B01J

Abstract:
1. A method for continuous production of a porous hollow fibre membrane having regioselective affinity for compounds in blood or other biologically active fluids to be removed during purification of blood or said fluids, the method comprising: providing a porous hollow fibre membrane substrate having a blood side and a filtrate side connected via pores; providing a vacuum system comprising: feeding said porous hollow fibre membrane substrate through the vaccum system; introducing a precursor gas containing functional groups to the sealed plasma ignition chamber to a pressure of at most 10 mbar when said porous hollow fibre membrane substrate reaches the vacuum sealed plasma ignition chamber, displacing any residual air present in the sealed plasma ignition chamber, subjecting the porous hollow fibre membrane substrate to a plasma ignition, wherein said functional groups in the precursor gas are homogeneously bound to the filtrate side surface and pore surface of the porous hollow fibre membrane substrate so as to provide regioselective affinity for compounds in blood or other biologically active fluids.