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Grafted methylenediphosphonate ion exchange resins

United States Patent

*** EXPIRED ***
April 8, 1997
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
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.
Trochimcznk; Andrzej W. (Knoxbille, TN), Gatrone; Ralph C. (Plymouth, PA), Alexandratos; Spiro (Knoxville, TN), Horwitz; E. Philip (Naperville, IL)
Arch Development Corp. (Chicago, IL), The University of Tennessee Research Corp. (Knoxville, TN)
08/ 383,798
February 6, 1995
GOVERNMENTAL RIGHTS This invention was made with government support pursuant to Contract No. W-31-109-ENG-38 between the U.S. Department of Energy and The University of Chicago, contractor for Argonne National Laboratory. The Government has certain rights in this invention.