Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Raisa Minkov0
Travis C. Bowen0
Chunqing Liu0
Jeffrey J. Chiou0
Syed A. Faheem0
Date of Patent
February 5, 2013
Patent Application Number
12790095
Date Filed
May 28, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention discloses a new type of polyimide membranes including hollow fiber and flat sheet membranes with high permeances for air separations and a method of making these membranes. The new polyimide hollow fiber membranes have O2 permeance higher than 300 GPU and O2/N2 selectivity higher than 3 at 60° C. under 308 kPa for O2/N2 separation. The new polyimide hollow fiber membranes also have CO2 permeance higher than 1000 GPU and single-gas selectivity for CO2/CH4 higher than 20 at 50° C. under 791 kPa for CO2/CH4 separation.
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