Polyimide blends for gas separation membranes

Details Polyimide blends for gas separation membranes Polyimide blends for gas separation membranes

2006-03-28

2006-03-28

Spitzer, Robert H. (Department: 1724)

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

C095S045000, C096S008000, C096S010000, C096S013000, C096S014000, C210S500230, C210S500390

Reexamination Certificate

active

07018445

ABSTRACT:
The present invention provides a selectively gas permeable membrane that has a superior combination of permeability and selectivity. The membrane composition includes a Type 1 copolyimide uniformly blended with a Type 2 copolyimide, which polymers are defined by chemical structure more specifically in this disclosure. The invention also provides a method of using the membrane of the copolyimide blend to separate components of gas mixtures.

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