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Patent Searching and Data


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)
Application Number:
PCT/EP2014/077317
Publication Date:
December 17, 2015
Filing Date:
December 11, 2014
Export Citation:
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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:
WO2011151314A12011-12-08
Foreign References:
EP2671627A12013-12-11
Attorney, Agent or Firm:
PACIFICO, Jessica (AA Echt, NL)
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