Polymer product for the selective absorption of dissolved ions

Details Polymer product for the selective absorption of dissolved ions Polymer product for the selective absorption of dissolved ions

1990-07-31

1992-03-17

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

521 25, 521 30, 210688, 528341, 528342, 106168, 525417, 527312, 536 57, C08L 1100, C08J 520, B01D 1500, C08G 6926

Patent

active

050969463

ABSTRACT:
A water-swellable polymer product which may be physically bound to an open celled cellulosic sponge is produced by thermally induced amide-forming insolubilization of polyethyleneimine (PEI). The polymer product has high affinity for the absorption of transition metal ions. A cellulosic sponge containing a high add-on of the polymer product is permeable to water and substantially unaffected by water-borne suspended matter.

REFERENCES:
patent: 3715339 (1973-02-01), Rainer
patent: 4332916 (1982-06-01), Ihill
Letter, Dynaphore, Inc., New Concepts in Chemistry, U.S. Environmental Protection Agency, Region VIII, Jun. 9, 1990.
Letter, Dynaphore, Inc., New Concepts in Chemistry, Colorado Dept of Natural Resources, Jul. 18, 1990.

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