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Title:
ASYMMETRIC GEL-FILLED MICROPOROUS MEMBRANES
Document Type and Number:
WIPO Patent Application WO2003008078
Kind Code:
A3
Abstract:
The invention provides asymmetric membranes composed of a microporous substrate whose pores contain a crosslinked gel, the density of the crosslinked gel being greater at or adjacent to one major surface of the membranethan the density at the other major surface. The membranesare useful for separating matter from liquids and display good flux and good rejection at low pressure.

Inventors:
CHILDS RONALD F (CA)
MIKA ALICJA M (CA)
GE JIJUN (US)
MCCRORY CHRIS (US)
Application Number:
PCT/CA2002/001102
Publication Date:
June 26, 2003
Filing Date:
July 18, 2002
Export Citation:
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Assignee:
UNIV MCMASTER (CA)
CHILDS RONALD F (CA)
MIKA ALICJA M (CA)
GE JIJUN (US)
MCCRORY CHRIS (US)
International Classes:
B01D69/12; B01D67/00; B01D69/10; B01D69/14; B01D71/28; B01D71/38; B01D71/40; B01D71/44; B01D71/60; C02F1/44; (IPC1-7): B01D69/14; B01D67/00; B01D69/10; B01D69/02; B01D69/12; B01D71/72; C08J9/42
Domestic Patent References:
WO1998017377A11998-04-30
WO1997017129A11997-05-15
WO2000050160A12000-08-31
WO1999040996A11999-08-19
Foreign References:
US5049275A1991-09-17
Other References:
A.M.MIKA ET AL: "a new class of polyelectrolyte-filled microfiltration membranes with environmentally controlled porosity", JOURNAL OF MEMBRANE SCIENCE, vol. 108, 1995, amsterdam,nl, pages 37-56, XP004041222
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