04527999 is referenced by 78 patents and cites 29 patents.

A differential pore-collapsed separation membrane particularly useful as a gas-separation membrane and a method of preparing such differential pore-collapsed membrane, which method comprises treating an asymmetric membrane, while under one-sided constraint, with a treating solution comprising a volatile nonsolvent and a swelling agent 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 a smaller pore-size distribution in the membrane generally less than about 10 Angstroms.

Title
Separation membrane and method of preparing and using same
Application Number
6/592519
Publication Number
4527999
Application Date
March 23, 1984
Publication Date
July 9, 1985
Inventor
Cheng H Lee
Wilmington
MA, US
Agent
Richard P Crowley
Assignee
Abcor
MA, US
IPC
B01D 53/22
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