B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
18/14
B01D 53/22 (2006.01) B01D 71/64 (2006.01) C08G 73/10 (2006.01)
Patent
CA 1320803
TITLE POLYIMIDE GAS SEPARATION MEMBRANES ABSTRACT OF THE DISCLOSURE Aromatic polyimide gas separation membranes containing the repeating unit: Image where --Ar-- is Image or mixtures thereof, Image is Image , Image or mixtures thereof Where -X, X1, X2, and X3 are independently primary or secondary alkyl groups having 1 to 6 carbon atoms preferably methyl or ethyl, -Z is -H, -X, -X1, -X2, or -X3 and R' is Image , Image ,--o-- ,--s-- , Image , Image , Image D-5656 Image Image , or where n = 0 to 4 or alkylene radicals of 1 to 3 carbon atoms and -R"- is Image , Image , -o-, -s-, Image , Image , or Image
566991
E. I. Du Pont de Nemours And Company
L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Proced Es Geo
L`air Liquide S.a.
Sim & Mcburney
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