Method for regenerating basic anion-exchange resin
US7622608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Mar 28, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J49/07
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.