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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 phosphorus. The pendent groups have the formula as shown in the patent 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:
; ; ;
Issue Date:
OSTI Identifier:
462849
Assignee:
Arch Development Corp., Chicago, IL (United States); Univ. of Tennessee Research Corp., Knoxville, TN (United States) PTO; SCA: 320302; 400201; PA: EDB-97:061495; SN: 97001767257
Patent Number(s):
US 5,618,851/A/
Application Number:
PAN: 8-383,798
Contract Number:
W-31109-ENG-38
Resource Relation:
Other Information: PBD: 8 Apr 1997
Research Org:
Univ. of Chicago, IL (United States)
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 40 CHEMISTRY; ORGANIC ION EXCHANGERS; COPOLYMERS; GRAFT POLYMERS; PHOSPHORUS COMPOUNDS; CHEMICAL PREPARATION; USES