Polyamide gas separation membranes and process of using same
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United States of America Patent
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-
Dec 31, 1991
Grant Date -
N/A
app pub date -
Nov 30, 1990
filing date -
Nov 30, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Polyaramide gas separation membranes and the process of using them are disclosed. The polyaramide gas separation membranes have the formula, ##STR1## where --R-- is ##STR2## --Ar'-- is ##STR3## --Ar'-- is an aromatic moiety such as phenylene, naphthalene, or ##STR4## --x-- is a divalent radical preferably --o-- or ##STR5## and --R'-- is a variety of divalent moieties such as ##STR6##
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