AROMATISCHE POLYSULFONE

摘要

PCT No. PCT/GB94/02652 Sec. 371 Date Oct. 15, 1996 Sec. 102(e) Date Oct. 15, 1996 PCT Filed Dec. 2, 1994 PCT Pub. No. WO95/15351 PCT Pub. Date Jun. 8, 1995An aromatic polyethersulphone incorporating sub-unit (1) where A is an electron withdrawing group, the designation "o,p" represents that the bond is at the ortho or para position to the A group, and X is selected from: OH; -O M where M is an organic or inorganic cation (other than hydrogen) and n is at least 1; -NR1R2 where R1 and R2 are the same or different and are selected from hydrogen and alkyl, aryl, aminoalkylene or ammonoalkylene groups; and -OR3 where R3 is an alkyl or aryl group; either as the only sub-units of the polymer or in combination with comonomer units. The polymer are useful for the production of membranes for separation processes: (I)