05286280 is referenced by 65 patents and cites 43 patents.

This invention provides a composite gas separation membrane comprising: (a) a porous polyacrylonitrile structural support material having a polyacrylonitrile surface; (b) a gutter layer coating comprising a crosslinked polar phenyl-containing-organopolysiloxane material on the polyacrylonitrile surface of the structural support material, leaving an uncoated gutter layer surface; and (c) an ultrathin 6FDA type polyimide selective membrane layer coating on the uncoated gutter layer surface. In preferred embodiments, the phenyl-containing-organopolysiloxane material additionally comprises a silica-sol. Processes for making the composite gas separation membrane and for using the membrane to carry out gas separations are also provided.

Title
Composite gas separation membrane having a gutter layer comprising a crosslinked polar phenyl-containing - organopolysiloxane, and method for making the same -
Application Number
7/999449
Publication Number
5286280
Application Date
December 31, 1992
Publication Date
February 15, 1994
Inventor
Jeffrey J Chiou
Irvine
CA, US
Agent
Jay M Brown
Assignee
Hoechst Celanese Corporation
NC, US
IPC
B01D 71/64
B01D 53/22
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