Title:
金属除去のための多孔質ＰＴＦＥ膜
Document Type and Number:
Japanese Patent JP6569721
Kind Code:
B2
Abstract:
Disclosed is a porous membrane comprising a porous polytetrafluoroethylene (PTFE) substrate and a coating comprising a copolymer of formula (I):
H-[-O-CH(Rf)-CH 2 -] m -[-O-CHM-CH 2 -] n --[-O-CHL-CH 2 -] s -OH (I),
wherein Rf is perfluoro-substituted alkyl or perfluoro-substituted alkyloxy alkyl; M is -CH 2 -O-(CH 2 ) 3 -S-(CHP) t -Y, wherein P is hydrogen or -CH 2 COOH, and for example, Y is -COOH or -SO 3 H, R is hydrogen or alkyl, L is -CH 2 -O-CH 2 -CH=CH 2 , m and n are each independently from about 10 to about 1000, n:s ranges from 0.3:0.7 to 1:0, and t is 0 or 1. Also disclosed is a method of preparing the porous membrane and a method of filtering a fluid, such as isopropanol, containing dissolved metals at a low concentration by the use of such membrane.
Inventors:
Hassan Ait-Haddu
Karredo Abdul-Herkim Helmy Amer
Karredo Abdul-Herkim Helmy Amer
Application Number:
JP2017231789A
Publication Date:
September 04, 2019
Filing Date:
December 01, 2017
Export Citation:
Assignee:
Pall Corporation
International Classes:
B01D71/46; B01D69/10; B01D69/12; B01D71/36; B01D71/80; B01D71/82; B01J39/05; B01J39/07; B01J39/19; B01J41/05; B01J41/07; B01J41/13; C02F1/44; C08G65/22
Domestic Patent References:
| JP2017002273A | ||||
| JP2016029146A | ||||
| JP2016194038A | ||||
| JP2016196625A |
Foreign References:
| US20160317982 |
Attorney, Agent or Firm:
Ikeda adult
Junichiro Sakamaki
Masakazu Noda
Kazuhiro Yamaguchi
Junichiro Sakamaki
Masakazu Noda
Kazuhiro Yamaguchi