Title:
MULTILAYER MEMBRANE WITH NANOFIBERS FOR BLOOD FILTRATION AND ITS PREPARATION
Document Type and Number:
WIPO Patent Application WO/2015/091181
Kind Code:
A3
Abstract:
The present invention relates to a multi-layer membrane construction for the separation of blood cells and plasma comprising: a) at least one layer comprising a hydrophilic nanoweb made of polymeric nanofibers, wherein the nanoweb mean flow pore size is in the range from 1 μm to 5 μm, wherein the nanoweb has a basis weight in the range from 1 to 3 g/m2 and a porosity in the range from 60 to 95%, and wherein the nanofibers have a number average diameter in the range from 200 to 500 nm; b) at least one support layer; c) at least one intermediate layer between the nanoweb and the support layer; characterized in that the polymeric nanofibers of the nanoweb comprise polyamide (PA) and polyethyleneoxide (PEO) in a weight ratio (w/w) in the range from 10/1 to 1/1 and the at least one intermediate layer comprises PEO. Further, the present invention relates to a method for fabricating said membrane. Furthermore, the present invention relates to a method for separating blood cells and plasma and to a filter comprising the membrane construction.
Inventors:
DORSCHU MARKO (NL)
BOONEN PETRUS JOHANNES LAMBERTUS (NL)
OOSTERLINCK FILIP STEFAN EMIEL (NL)
STEPANYAN ROMAN (NL)
BOONEN PETRUS JOHANNES LAMBERTUS (NL)
OOSTERLINCK FILIP STEFAN EMIEL (NL)
STEPANYAN ROMAN (NL)
Application Number:
PCT/EP2014/077317
Publication Date:
December 17, 2015
Filing Date:
December 11, 2014
Export Citation:
Assignee:
DSM IP ASSETS BV (NL)
International Classes:
B01D69/10; A61M1/16; A61M1/36; B01D39/16; B01D69/12; B01D71/52; B01D71/56; D01F6/60; D04H1/728; G01N33/48; G01N33/52
Domestic Patent References:
WO2011151314A1 | 2011-12-08 |
Foreign References:
EP2671627A1 | 2013-12-11 |
Attorney, Agent or Firm:
PACIFICO, Jessica (AA Echt, NL)
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