Resins and processes for preparing them

Details Resins and processes for preparing them Resins and processes for preparing them

1992-08-19

1994-10-18

Page, Thurman K.

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

Synthetic resins

Ion-exchange polymer or process of preparing

521 31, C08F 800, B01J 3900

Patent

active

053569377

ABSTRACT:
The resin has a polymeric matrix and functional groups of formula I wherein the radicals have the meaning stated in claim 1. The resin is prepared by reacting a corresponding resin having functional groups of formula II with HC(O)R.sup.2 and (R.sup.3).sub.2 SO.sub.3 or (R.sup.3).sub.2 S.sub.2 O.sub.5. The resin is useful for reducing the concentration of alkaline earth or transition metal ions in a solution.

REFERENCES:
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patent: 4442231 (1984-04-01), Kataoka et al.
patent: 4777219 (1988-10-01), Long
patent: 4952642 (1990-08-01), Long
Trans. of U.S.S.R. Inventor's Certificate 385,977.
"Ion Exchange", F. Helfferich, McGraw-Hill Book Co., N.Y. 1962.
"Ullmann's Enzyklpadie der Technischen Chemie", 4th Edition, vol. 13, pp. 279 et seq.
"Sulphonation and related reactions", E. E. Gilbert, Interscience Publisher, 1965, pp. 242 et seq.

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