C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
403/69
C08J 9/36 (2006.01) A61M 1/14 (2006.01) A61M 1/34 (2006.01) B01D 67/00 (2006.01) B01D 69/00 (2006.01) B01D 69/02 (2006.01) B01D 71/34 (2006.01) C08J 9/40 (2006.01)
Patent
CA 1300806
ABSTRACT OF THE DISCLOSURE A hydrophilic porous membrane of polyvinylidene fluoride excelling in perviousness to water and other various properties and enjoying high commercial value, having uniform hydrophilicity imparted to the surface of pores therein, which porous membrane is characterized by the fact that the reflection spectrum thereof in the visible zone is substantially unchanged from that which existed before the treatment for impartation of hydrophilicity. A method for the produciton of the hydrophilic porous membrane, characterized by chemically treating the porous membrane in a strong alkali solution containing an oxidizing agent.
556360
Koyama Noriyuki
Onishi Makoto
Seita Yukio
Macrae & Co.
Terumo Kabushiki Kaisha
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