Application of diphosphonic derivatives to cation exchange, new

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing

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525340, 521 25, 521 38, C08D 520, C08C 1924

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active

047742623

ABSTRACT:
A water insoluble ion exchange resin having a crosslinked, three dimensional resin skeleton and an active group of the formula: ##STR1## wherein R is selected from the group consisting of hydrogen and an alkyl radical having 1-15 carbon atoms and having at most two branchings in the alkyl group, and A is a mono-, di-, or tri-substituted ethylene radical or mono- or di-substituted methylene radical, wherein the substituents are selected from the group consisting of an alkyl group having at most two branchings, hydroxy, an amino group and hydrogen and wherein A provides a link binding the active group to the resin skeleton.

REFERENCES:
patent: 3214454 (1965-10-01), Blaser et al.
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patent: 3303139 (1967-02-01), Blaswer et al.
patent: 3784512 (1974-01-01), Masson et al.
patent: 3890228 (1975-06-01), Hwa et al.
patent: 4020091 (1977-04-01), Budnick
Chem. Abstacts, vol. 95, entry 158798N.
Chem. Abstracts, vol. 95, "Phosphonic Acid-bis Derivatives".

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