05071452 is referenced by 60 patents and cites 44 patents.

Disclosed is a gas separation membrane, comprising a film with a thickness ranging from 0.05.10.sup.-6 to 20.10.sup.-6 m, at least 90% by mole of which is at least one aromatic polyimide or copolyimide, the recurrent unit of which corresponds to the following formula (I): ##STR1## where A represents a tetravalent aromatic radical at least 50% by mole of which are represented by the following formula (II): ##STR2## and B represents a bivalent aromatic radical or a mixture of bivalent aromatic radicals.

Title
Gas separation membrane
Application Number
7/565845
Publication Number
5071452
Application Date
August 13, 1990
Publication Date
December 10, 1991
Inventor
Eric Robert
Rueil Malmaison
FR
Jean Claude Mileo
Saint Ismier
FR
Alain Driancourt
Bourg la Reine
FR
Andre Deschamps
Noisy le Roi
FR
Rene Avrillon
Maison Laffite
FR
Agent
Millen White & Zelano
Assignee
Institut Francais du Petrole
FR
IPC
B01D 71/64
B01D 53/22
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