USE OF POROUS HOLLOW-FIBER MEMBRANE FOR PRODUCING CLARIFIED BIOMEDICAL CULTURE MEDIUM

Title:

USE OF POROUS HOLLOW-FIBER MEMBRANE FOR PRODUCING CLARIFIED BIOMEDICAL CULTURE MEDIUM

Document Type and Number:

WIPO Patent Application WO/2010/035793

Kind Code:

A1

Abstract:

A use of a porous hollow-fiber membrane comprising a tube, the wall of which is constituted of a blend of a hydrophobic polymer and polyvinylpyrrolidone. The membrane has a polyvinylpyrrolidone content of 0.2-3 mass% of the whole mass of the porous hollow-fiber membrane. When the tube wall is divided in the membrane-thickness direction equally into three regions, then the outer circumferential region including the outer surface has a higher polyvinylpyrrolidone content than the inner circumferential region including the inner surface, and the inner surface has an average pore diameter larger than that of the outer surface. The use of the porous hollow-fiber membrane is for producing a clarified biomedical culture medium by a method comprising a filtration step in which a biomedical culture medium is passed through the porous hollow-fiber membrane.

Inventors:

KATO CHIHIRO (JP)
SEKI YUUKOU (JP)
SHIKI SATOSHI (JP)

Application Number:

PCT/JP2009/066670

Publication Date:

April 01, 2010

Filing Date:

September 25, 2009

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ASAHI KASEI CHEMICALS CORP (JP)
KATO CHIHIRO (JP)
SEKI YUUKOU (JP)
SHIKI SATOSHI (JP)

International Classes:

B01D69/08; B01D63/02; B01D65/02; B01D71/44; B01D71/68; C12M1/12

Domestic Patent References:

WO1997022405A1	1997-06-26
WO2005030375A1	2005-04-07
WO2009054495A1	2009-04-30
WO2002058828A1	2002-08-01
WO1996035504A1	1996-11-14

Foreign References:

JP2004525755A	2004-08-26
JPH0576736A	1993-03-30
JPH05245350A	1993-09-24
JP2005088008A	2005-04-07
JPS6022906A	1985-02-05
JPH07155559A	1995-06-20
JPH04260419A	1992-09-16

Other References: