Method for regenerating basic anion-exchange resin

Details Method for regenerating basic anion-exchange resin Method for regenerating basic anion-exchange resin

2008-03-28

2009-11-24

Puttlitz, Karl J (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

07622608

ABSTRACT:
A simple and efficient method for regenerating a basic anion-exchange resin, whereby at the time of removing a fluorinated emulsifier from a basic anion-exchange resin having the fluorinated emulsifier adsorbed thereon, it is unnecessary to provide a safety device/recovery technique necessary for handling an organic solvent by the use of a combustible organic solvent represented by an alcohol, and a burden imposed by e.g. treatment against COD load, is eliminated.A basic anion-exchange resin having a fluorinated emulsifier adsorbed thereon is contacted with an aqueous alkaline solution having a temperature of from 60 to 105° C. to elute the fluorinated emulsifier thereby to regenerate the basic anion-exchange resin.

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