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专利名称：Separation membrane and method of
preparing and using same
发明人：Cheng H. Lee申请号：US06/592519申请日：19840323公开号：US04527999A公开日：19850709
摘要：A differential pore-collapsed separation membrane particularly useful as a gas-separation membrane and a method of preparing such differential pore-collapsedmembrane, which method comprises treating an asymmetric membrane, while under one-sided constraint, with a treating solution comprising a volatile nonsolvent and a swellingagent and/or a solvent, and drying the treated membrane, to provide for the controlled,differential pore collapse of the small pores of the top skin of the membrane to asmaller pore-size distribution in the membrane generally less than about 10 Angstroms.
申请人：ABCOR, INC.
代理人：Richard P. Crowley
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