Ion exchange compounds on cellulose basis and process for the ma

Details Ion exchange compounds on cellulose basis and process for the ma Ion exchange compounds on cellulose basis and process for the ma

1977-06-29

1978-08-22

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

521 25, C08B 1100

Patent

active

041090802

ABSTRACT:
The present invention relates to ion exchange compounds on cellulose basis having formula ##STR1## wherein R is a group that forms chelate complexes with metal ions, and Cell stands for the cellulose matrix. Suitable functional groups R are derivatives of known metal reactants, which show a high degree of selectivity for specific metal ions. The ion exchange compounds are able to fix specifically preferred ions e.g. metal ions even in a considerable excess of foreign ions, for example in concentrated salt solutions.
The improved ion exchange compounds of this invention are prepared by reacting the compound ##STR2## with cellulose in the presence of alkali, diazotizing the cellulose derivative resulting therefrom and subsequently coupling couplable compounds which form chelate complexes with metal ions.

REFERENCES:
patent: 4022964 (1977-05-01), Lieser et al.

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