Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-02-21
2006-02-21
Cheung, William K. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S303100, C526S317100, C526S310000, C526S227000
Reexamination Certificate
active
07001963
ABSTRACT:
The present invention provides a polymer composition for the selective removal of cobalt, a process for the preparation thereof and the process for removal of cobalt, using the said polymer composition. More particularly it relates to a cross-linked polymer composition prepared by the molecular imprinting technique. The preparation of the cross linked polymer involves selection of vinyl monomers bearing functional groups that bind to cobalt, formation of a complex of these monomers with cobalt and subsequent polymerization of the complex in presence of a crosslinker. The process for the removal of cobalt comprises treating the solution containing a mixture of cobalt and other metal ions with the polymer under conditions sufficient for cobalt to form a complex with the polymer and separating the polymer from the cobalt depleted solution.
REFERENCES:
patent: 5780578 (1998-07-01), Mashelkar et al.
Kuchen et al., “Metal-Ion Selective Resins by Matrix Imprint with Methacrylates”, Angew. Chem. Int. Ed., vol. 27, No. 12, 1988, pp. 1695-1697, XP002295591.
Karmalkar Rohini Nitin
Kulkarni Mohan Gopalkrishna
Cheung William K.
Council of Scientific and Industrial Research
Nixon & Vanderhye P.C.
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