A METHOD OF VIRAL REMOVAL FROM A LIQUID CONTAINING PHYSIOLOGICALLY ACTIVE SUBSTANCE
Application 103/KOLNP/2004 published 2006-05-19, filed 2004-01-28
A multilayer micro porous membrane containing a thermoplastic resin, comprising a coarse structure layer with a higher open pore ratio and a fine structure layer with a lower open pore ratio, wherein said coarse structure layer is present at least in one membrane surface having a thickness of not less than 5.0µm, a thickness of said fine structure layer is not less than 50% of the whole membrane thickness, and said coarse structure layer and said fine structure layer are formed in one-piece. (FIG.1 )
Applicant
ASAHI KASEI KABUSHIKI KAISHA
2-6, DOJIMAHAMA 1-CHOMA, KITA-KU, OSAKA, JAPAN
Inventor
(1) NAGOYA FUJIHARU (2) KOGUMA ICHIRO
International Info
Classification: B01D 69/02; 71/34; 69/08; C08J 9/26
Publication Number: WO03/026779A1 – 03.04.2003
Application Date: 2002-07-31
Priority Information
2001-234035 JAPAN 2001-08-01