Metal chelate-forming fiber, process for producing the same,...

Details Metal chelate-forming fiber, process for producing the same,... Metal chelate-forming fiber, process for producing the same,...

2005-03-22

2005-03-22

Barry, Chester T (Department: 1724)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C210S684000, C210S685000, C210S686000, C210S687000, C210S688000, C210S912000, C210S913000, C210S914000

Reexamination Certificate

active

06869537

ABSTRACT:
A fiber capable of forming a metal chelate and a process for producing the same are disclosed, wherein the fiber is characterized in that at least one metal chelate-forming compound selected from the group consisting of aminocarboxylic acid, aminocarboxylic acid, thiocarboxylic acid and phosphoric acid, which are reactive with a glycidyl group, is bonded to a molecule of a synthetic fiber through a crosslinkable compound having a reactive double bond and a glycidyl group in its molecule. The chelate-forming fiber is excellent in capturing harmful heavy metal ions and can be easily produced in a simple and safe way at a low cost.

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Waly A. et al., Synthesis and Characterization of Cellulose Ion Exchanger; Pilot Scale and Utilization in Dye-Heavy Metal Removal, Paperchem, XP002191928.

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