Title:
GRAFTED QUATERNARY AMMONIUM GROUP CATION RESIN AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/238315
Kind Code:
A1
Abstract:
A grafted quaternary ammonium group cation resin and a preparation method therefor. The method comprises sequentially adding cross-linked chloromethyl polystyrene resin, trimethylamine hydrochloride, and a 20% sodium hydroxide aqueous solution into a reactor in parts by weight, keeping the temperature of the reactor at 30-40°C, stirring for reaction for 3 h, filtering, washing, and drying to obtain a quaternary ammonium group-introduced resin; and sequentially adding the resin, 1,2-dichloroethane, and silver sulfate into the reactor, heating to 50-60°C, adding concentrated sulfuric acid and fuming sulfuric acid, reacting for 1 h, heating to 70-80°C, reacting for 1 h, heating to 115-125°C, reacting for 5 h, cooling to room temperature, diluting a reaction liquid, filtering, washing, and drying to obtain the grafted quaternary ammonium group cation resin. The obtained resin has good electric regeneration performance, and can be used for preparing high-purity water and treating heavy metal wastewater in a membrane-free electrodeionization technology.
Inventors:
CHEN XUEMING (CN)
ZHANG XUEJIAO (CN)
ZHANG XUEJIAO (CN)
Application Number:
PCT/CN2021/078380
Publication Date:
December 02, 2021
Filing Date:
March 01, 2021
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
C08F8/36; B01J39/20; B01J49/30; C08F8/44; C08F12/06
Foreign References:
| CN111607024A | 2020-09-01 | |||
| CN110300735A | 2019-10-01 | |||
| CN103249485A | 2013-08-14 | |||
| CN109485766A | 2019-03-19 | |||
| CN101406853A | 2009-04-15 | |||
| CN104861194A | 2015-08-26 | |||
| JPS61254257A | 1986-11-12 | |||
| US5523327A | 1996-06-04 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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