Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1990-11-30
1991-12-31
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 68, 55158, B01D 5322, B01D 7156
Patent
active
050768174
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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E. I. Du Pont de Nemours and Company
Spitzer Robert
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