Organic polymer separation membrane having fluorene skeleton and oxygen enrichment device utilizing same

摘要

A separation membrane consisting of a polyamide having a unit (I) or a mixing of polyamides having units (I) and (II) and (II') or a polyester having a unit (III) or (IV) and (IV') or a mixture of polyesters having units (III) and (IV) and (IV'):PP--HN-- X--NH--Z.sub.1 -- (I)PP--(HN--X--NH--Z.sub.1).sub.l -- (II)P P--(HN--X--NH--Z.sub.1 ').sub.n -- (II')P P--O--X--O-- Z.sub.2 -- (III)PP--(O--X--O--Z.sub. 2).sub.r -- (IV) PP--(O--X--O--Z.sub.2 ').sub.s -- (IV') PP wherein X represents ##STR1## where R represents H, CH. sub.3, or C.sub.2 H.sub.5 ; Z.sub.1 and Z.sub.2 represent ##STR2## Z.sub. 1 ' represents -- CO--(CH.sub.2).sub.p --CO--, Z.sub.2 ' represents --CO-- CHCH--CO--, p is an integer of 4 to 8, n/l is 1.0 to 20, and r/s is 0.5 to 100.