Ion exchange polymers for anion separations
AssigneeThe Regents of the University of California Office of Technology Transfer
InventorsGordon D. Jarvinen, S. Fredric Marsh, Richard A. Bartsch
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Abstract
Anion exchange resins including at least two positively charged sites and a ell-defined spacing between the positive sites are provided together with a process of removing anions or anionic metal complexes from aqueous solutions by use of such resins. The resins can be substituted poly(vinylpyridine) and substituted polystyrene.
Claims10
An anion exchange resin comprised of substantial identical repeating units, said units of a type selected from the group consisting of (a) ##STR19## wherein Q is phosphorus, each R is the same and is an alkyl having from 1 to about 6 carbon atoms, n is an integer from 1 to 6, x+y=1 and x is from about 0.2 to about 1.0, and X.sup.- is a counterion, (b) ##STR20## wherein each R is the same and is an alkyl having from 1 to about 6 carbon atoms, n is an integer from 1 to 6, m is an integer from 1 to 4, p is an integer from 1 to 6, x+y=1 and x is from about 0.2 to about 1.0, and X.sup.- is a counterion, (c) ##STR21## wherein n is an integer from 2 to 6, x+y=1 and x is from about 0.2 to about 1.0, and X.sup.- is a counterion, (d) ##STR22## wherein one of A and B is nitrogen, n is an integer from 1 to 6, x+y=1 and x is from about 0.2 to about 1.0, and X.sup.- is a counterion, and (e) ##STR23## wherein one of A, B and D is nitrogen and one of A', B' and D' is nitrogen, each R and R' is an alkyl having from 1 to about 6 carbon atoms, R' is attached to said A, B or D which is nitrogen, n is an integer from 2 to 6, a+b+c+d=1 and a+b is from about 0.2 to about 1.0, and X.sup.- is a counterion.
Dependencies are inferred from the claim text.