Invention Grant
US4177150A Dried porous acrylonitrile polymer membrane, process for producing same
and separators made therefrom
失效
干多孔丙烯腈聚合物膜，其制造方法和由其制成的分离器
- Patent Title: Dried porous acrylonitrile polymer membrane, process for producing same and separators made therefrom
- Patent Title (中): 干多孔丙烯腈聚合物膜，其制造方法和由其制成的分离器
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Application No.: US831017Application Date: 1977-09-06
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Publication No.: US4177150APublication Date: 1979-12-04
- Inventor: Akio Inoue , Tadahiro Kobayashi , Toshio Iwasa
- Applicant: Akio Inoue , Tadahiro Kobayashi , Toshio Iwasa
- Applicant Address: JPX Tokyo
- Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
- Current Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
- Current Assignee Address: JPX Tokyo
- Priority: JPX51/106613 19760908
- Main IPC: B32B5/18
- IPC: B32B5/18 ; B01D71/40 ; B01D71/42 ; B32B5/14 ; C08J5/18 ; C08J9/28 ; C08L33/20 ; H01M2/14 ; H01M2/16 ; H01M10/14 ; B01D13/04
Abstract:
Provided is dried porous membrane composed of acrylonitrile polymer walls separating predominantly interconnecting small-size pores. The membrane has surface layers integrated with a support layer to form a single continuous acrylonitrile polymer phase. At least one of the surface layers has pores of from 0.001 to 0.05 micron in average size, and the support layer has pores which are on the average larger than the pores in the surface layer or layers. The membrane has a porosity of from 20% to 70% by volume and a fragility of below 30. The membrane exhibits improved mechanical properties.
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