Sponge for the absorption of metal ions

Details Sponge for the absorption of metal ions Sponge for the absorption of metal ions

1990-07-31

1997-01-28

Zitomer, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 25, 521 28, 521 32, C08J 520

Patent

active

055978509

ABSTRACT:
An open-celled cellulosic sponge contains a thermally insolubilized polyethyleneimine (PEI) capable of selectively removing dissolved ions from aqueous systems. By virtue of a cuboid configuration of critically selected dimensions, the insolubilized PEI is substantially uniformly distributed in useful amounts throughout the sponge.

REFERENCES:
patent: 3715339 (1973-02-01), Rainer
patent: 4332916 (1982-06-01), Thill
patent: 5002984 (1991-03-01), Rainer

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