Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Reexamination Certificate
2005-12-15
2009-02-03
Greene, Jason M (Department: 1797)
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
C095S050000, C095S051000, C095S054000, C095S055000, C096S004000, C096S008000, C096S010000, C096S012000, C096S013000, C096S014000, C210S640000
Reexamination Certificate
active
07485173
ABSTRACT:
The present invention is for novel high performance cross-linkable and cross-linked mixed matrix membranes and the use of such membranes for separations such as for CO2/CH4, H2/CH4and propylene/propane separations. More specifically, the invention involves the preparation of cross-linkable and cross-linked mixed matrix membranes (MMMs). The cross-linkable MMMs were prepared by incorporating microporous molecular sieves or soluble high surface area microporous polymers (PIMs) as dispersed microporous fillers into a continuous cross-linkable polymer matrix. The cross-linked MMMs were prepared by UV-cross-linking the cross-linkable MMMs containing cross-linkable polymer matrix such as BP-55 polyimide. Pure gas permeation test results demonstrated that both types of MMMs exhibited higher performance for CO2/CH4and H2/CH4separations than those of the corresponding cross-linkable and cross-linked pure polymer matrices.
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Chiou Jeffrey J.
Liu Chunqing
Wilson Stephen T.
Goldberg Mark
Greene Jason M
UOP LLC
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