发明授权
- 专利标题: Microporous membranes from polypropylene
- 专利标题(中): 聚丙烯微孔膜
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申请号: US42138申请日: 1987-04-24
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公开(公告)号: US4874567A公开(公告)日: 1989-10-17
- 发明人: George Lopatin , Larry Y. Yen , Randall R. Rogers
- 申请人: George Lopatin , Larry Y. Yen , Randall R. Rogers
- 申请人地址: MA Bedford
- 专利权人: Millipore Corporation
- 当前专利权人: Millipore Corporation
- 当前专利权人地址: MA Bedford
- 主分类号: B32B5/24
- IPC分类号: B32B5/24 ; B01D67/00 ; B01D71/26 ; B29C67/20 ; B29K23/00 ; B29K105/04 ; B29L7/00 ; B32B27/12 ; C08J5/18 ; C08J9/28 ; D01D5/24
摘要:
Microporous polypropylene membrane or hollow fibers is formed from a melt blend of 5 to 20 weight percent polypropylene and a solvent. The melt blend is shaped and cooled to effect solid phase separation of the polypropylene from the blend. The solvent is separated from the polypropylene by extraction and the porous polypropylene is dried under restraint to prevent shrinkage.
公开/授权文献
- USD375524S Writing instrument 公开/授权日:1996-11-12
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