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Title: Grafted methylenediphosphonate ion exchange resins

An ion exchange resin is disclosed that is comprised of an insoluble copolymer onto which are grafted pendent groups that provide 1.0 to about 10 mmol/g dry weight phosphorous. The pendent groups have the formula ##STR1## wherein R is hydrogen, a cation or mixtures thereof; and R.sup.1 is hydrogen or an C.sub.1 -C.sub.2 alkyl group. The resin also contains zero to about 5 mmol/g dry weight of pendent aromatic sulfonate groups. Processes for making and using an ion exchange resin are also disclosed.
Inventors:
 [1];  [2];  [3];  [4]
  1. (Knoxbille, TN)
  2. (Plymouth, PA)
  3. (Knoxville, TN)
  4. (Naperville, IL)
Issue Date:
OSTI Identifier:
870894
Assignee:
Arch Development Corp. (Chicago, IL); University of Tennessee Research Corp. (Knoxville, TN) ANL
Patent Number(s):
US 5618851
Contract Number:
W-31109-ENG-38
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
grafted; methylenediphosphonate; exchange; resins; resin; disclosed; comprised; insoluble; copolymer; pendent; provide; 10; mmol; dry; weight; phosphorous; formula; str1; hydrogen; cation; mixtures; -c; alkyl; contains; zero; aromatic; sulfonate; processes; dry weight; exchange resin; exchange resins; weight phosphorous; grafted methylenediphosphonate; grafted pendent; insoluble copolymer; /521/525/526/