Title:
超撥水性膜
Document Type and Number:
Japanese Patent JP2006524567
Kind Code:
A
Abstract:
A microporous gas permeable membrane having an ultraphobic liquid contact surface. In the invention, ultraphobic surface is provided on the liquid contact surface of the membrane. In an embodiment of the invention, the ultraphobic surface includes a multiplicity of closely spaced microscale to nanoscale asperities formed on a substrate. When liquid at or below a predetermined pressure value is contacted with the ultraphobic liquid contact surface of the membrane, the liquid is "suspended" at the tops of the asperities, defining a liquid/gas interface plane. The area of the liquid/gas interface plane includes the area of the ultraphobic surface as well as the combined area of the micropores, so that the gas transfer rate and efficiency of the membrane is enhanced over prior membranes wherein the liquid/gas interfacial area is limited to only the area of the micropores.
Inventors:
Exstrand, Charles, W
Application Number:
JP2006510089A
Publication Date:
November 02, 2006
Filing Date:
April 15, 2004
Export Citation:
Assignee:
Entegris Incorporated
International Classes:
B01D69/00; B01D67/00; B01D69/02; B01D69/06; B01D69/08; B01D71/00; B29B11/14; B29C47/00; B82B1/00; B82B3/00; C01B31/02; A61M1/16; A61M1/18; A61M1/22; C30B29/66; B01D
Attorney, Agent or Firm:
Okada International Patent Office