Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Reexamination Certificate
2005-09-12
2008-08-12
Griffin, Walter D. (Department: 1797)
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
C210S500270, C210S500360, C210S502100, C428S314800
Reexamination Certificate
active
07410525
ABSTRACT:
The present invention is for a polymer/polymer mixed matrix membrane and the use of such membranes in gas separation applications. More specifically, the invention involves the preparation of polymer/polymer mixed matrix membranes incorporating soluble polymers of intrinsic microporosity as microporous fillers. These polymeric fillers of intrinsic microporosity exhibit behavior analogous to that of conventional microporous materials including large and accessible surface areas, interconnected micropores of less than 2 nm in size, as well as high chemical and thermal stability, but, in addition, possess properties of conventional polymers including good solubility and easy processability. Gas separation experiments on these mixed matrix membranes show dramatically enhanced gas separation performance for CO2removal from natural gas. Mixed matrix membranes prepared in accordance with the present invention can also be used in the separation of the following pairs of gases: hydrogen/methane, carbon dioxide
itrogen, methane
itrogen and olefin/paraffin such as propylene/propane.
REFERENCES:
patent: 6508860 (2003-01-01), Kulkarni et al.
patent: 7166146 (2007-01-01), Miller et al.
patent: 2005/0230305 (2005-10-01), Kulkarni et al.
patent: 2006/0201884 (2006-09-01), Kulprathipanja et al.
patent: 2006/0246273 (2006-11-01), McKeown et al.
patent: WO 98/14509 (1997-02-01), None
patent: WO 97/03748 (1998-04-01), None
patent: WO 2005/012397 (2005-02-01), None
J. Hradil, V. Krystl, P. Hrabanek, B. Bernauer, M. Kocirik, “Heterogeneous membranes based on polymeric adsorbents for separtion of small molecules”, Jun. 24, 2004, Sceince Direct, pp. 303-313.
Hradil et al, “Heterogenous membranes based on polymeric adsorbents for separation of small molecules”, Apr. 1, 2003, Science Direct.
“Phthalocyanine-Based Nanoporous Network Polymers” by N.B. McKeown et al., Chem. Commun., 2002, 2780-2781.
“Porphyrin-Based Nanoporous Network Polymers” by N.B. McKeown et al., Chem. Commun., 2002, 2782-2783.
“A Nanoporous Network Polymer Derived from Hexaazatrinaphthylene with Potential as an Adsorbent and Catalyst Support” by P.M. Budd et al., J. Mater. Chem., 2003, 13, 2721-2726.
“Polymers of Intrinsic Microporosity (PIMs): Robust, Solution-Processable, Organic Nanoporous Materials” by P.M. Budd et al., Chem. Commun., 2004, 230-231.
“Solution-Processed, Organophilic Membrane Derived from a Polymer of Intrinsic Microporosity” by P.M. Budd et al., Adv. Mater. 2004, 16, No. 5, March 5.
“Polymers of Intrinsic Microporosity (PIMs): Bridging the Void Between Microporous and Polymeric Materials” by N.B. McKeown et al., Chem. Eur. J. 2005, 11, 2610-2620.
“Microporous Polymeric Materials” by P.M. Budd et al., Materials Today, Apr. 2004, 40-46.
Liu Chunqing
Wilson Stephen T.
Goldberg Mark
Griffin Walter D.
Harris Amber Miller
UOP LLC
LandOfFree
Mixed matrix membranes incorporating microporous polymers as... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mixed matrix membranes incorporating microporous polymers as..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mixed matrix membranes incorporating microporous polymers as... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3996028