Anion exchanger

Details Anion exchanger Anion exchanger

1989-07-26

1993-01-19

Page, Thurman K.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 27, 521 30, B01J 4100

Patent

active

051807505

ABSTRACT:
An anion exchanger consisting essentially of an aromatic polysulfone block copolymer of the formula: ##STR1## wherein Ar is ##STR2## or ##STR3## X is --SO.sub.2 --, ##STR4## --S-- or --O--, Y is --SO.sub.2 --, --S-- or --O--, Z is a single bond, --O--, --S--, --SO.sub.2 --, ##STR5## each of R.sub.1 to R.sub.9 which may be the same or different is a hydrocarbon group having from 1 to 8 carbon atoms, each of a to d is an integer of from 0 to 4, e is an integer of from 0 to 3, (f+g) is from 0 to 7, (h+i) is from 0 to 5, each of R.sub.10 and R.sub.11 is a hydrogen atom or a hydrocarbon group having from 1 to 6 carbon atoms, and each of m and n is an integer of from 2 to 200, provided m
=100/1-1/10, and having anion exchange groups introduced to the aromatic rings of the copolymer.

REFERENCES:
patent: 3236808 (1966-02-01), Goldberg et al.
patent: 3663507 (1972-05-01), Vogel et al.
patent: 4273878 (1981-06-01), Amick
patent: 4577000 (1986-03-01), Chen et al.
patent: 4654410 (1987-03-01), Kashiwame et al.
Chem. Abstracts vol. 109, entry 7656w.
Journal of Membrane Science 22 (1985) 325-332.

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