Invention Grant
- Patent Title: Process of making microporous membranes from poly(etheretherketone)-type polymers and low melting point crystallizable polymers
- Patent Title (中): 由聚（醚醚酮）型聚合物和低熔点可结晶聚合物制备微孔膜的方法
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Application No.: US633600Application Date: 1990-12-21
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Publication No.: US5227101APublication Date: 1993-07-13
- Inventor: Robert D. Mahoney , H. Nelson Beck , Richard A. Lundgard , Hawk S. Wan , Jiro Kawamoto , Mark F. Sonnenschein
- Applicant: Robert D. Mahoney , H. Nelson Beck , Richard A. Lundgard , Hawk S. Wan , Jiro Kawamoto , Mark F. Sonnenschein
- Applicant Address: MI Midland
- Assignee: The Dow Chemical Company
- Current Assignee: The Dow Chemical Company
- Current Assignee Address: MI Midland
- Main IPC: B01D67/00
- IPC: B01D67/00 ; B01D69/08 ; B01D71/52 ; C08J3/09 ; C08J5/18 ; C08J9/26 ; C08J9/28 ; D01D5/24 ; D01D5/247 ; D01F6/66
Abstract:
The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, a low melting point crystallizable polymer, and a plasticizer, heating the resulting mixture, extruding or casting the mixture into a membrane, quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, after leaching, or a combination thereof.
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