Blends of polyethersulfones with aromatic polyimides,...

C - Chemistry – Metallurgy – 08 – L

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C08L 81/06 (2006.01) B01D 53/22 (2006.01) B01D 69/08 (2006.01) B01D 71/00 (2006.01) B01D 71/64 (2006.01) B01D 71/68 (2006.01) C08L 77/10 (2006.01) C08L 79/08 (2006.01)

Patent

CA 2118429

TITLE BLENDS OF POLYETHERSULFONES WITH AROMATIC POLYIMIDES, POLYAMIDES OR POLYAMIDE-IMIDES AND GAS SEPARATION MEMBRANES MADE THEREFROM ABSTRACT OF THE DISCLOSURE The present invention provides a three-component blend of (i) an aromatic polyethersulfone, (ii) an aromatic polyimide, and (iii) an alkyl-substituted aromatic polyimide, polyamide or polyamide-imide or mixtures thereof. The invention also provides for gas separation membranes with superior gas transport properties made from two-and-three component blends of polyethersulfone with aromatic polyimides to provide a gas separation membrane with superior productivity and good selectivity.

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