06187987 is referenced by 34 patents and cites 16 patents.

Permselective separation of aromatic hydrocarbons from non-aromatic hydrocarbons in a feed stream is accomplished using improved asymmetric membranes. The preferred membranes are fashioned from a polyimide and conditioned with a lubricating oil. Feed streams containing a mixture of aromatic and non-aromatic hydrocarbons are contacted with the dense active layer side of the polyimide membrane under a pressure and temperature sufficient to selectively permeate the desired aromatic hydrocarbon.

Title
Recovery of aromatic hydrocarbons using lubricating oil conditioned membranes
Application Number
9/126256
Publication Number
6187987 (B1)
Application Date
July 30, 1998
Publication Date
February 13, 2001
Inventor
Lloyd S White
Columbia
MD, US
Terry R Waldron
PT Neches
TX, US
Jeffrey C Trewella
Kennett Square
PA, US
Bryan M Knickerbocker
Beaumont
TX, US
Arthur A Chin
Cherry Hill
NJ, US
Agent
Malcolm D Keen
US
Assignee
Exxon Mobil Corporation
VA, US
IPC
C07C 7/144
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