Quaternary ammonium type anion exchange agent and its preparation method

An anion exchanger, quaternary ammonium type technology, applied in the field of functional polymers, can solve the problem of low exchange capacity of quaternary ammonium groups, and achieve the effects of improving multi-substitution and secondary cross-linking, high conversion rate and reducing harm
CN1597118AInactive Publication Date: 2005-03-23NANJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING UNIV OF TECH
Publication Date
2005-03-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

A quanternary ammonium type anionic exchanging agent with 0.3-3.9 meq / g dry agent of exchange capacity is prepared through Friedel-Crafts acylation reaction to introduce the alpha-haloaceyl to polystyrene and reaction on amine or ammonia.
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Description

technical field

[0001] The invention belongs to the field of functional polymers. Specifically relates to a quaternary ammonium anion exchanger with dual functions of adsorption and exchange and a preparation method thereof. Background technique

[0002] Quaternary ammonium strong basic anion exchanger is a kind of ion exchanger. Its uses are very extensive. In the water treatment industry, strong basic anion exchangers can be used to remove impurity ions; in catalytic chemical reactions, strong basic anion exchangers can be used in reactions such as Michael addition, cyanohydration, and phenolic alcohol condensation; In terms of chemistry, strong basic anion exchangers can be used for the extraction of alkaloids, the separation and purification of streptomycin and amino acids, etc.

[0003] The usual method for preparing strongly basic anion exchangers uses raw materials such as chloromethyl ether or dichloromethyl ether with strong carcinogenicity, such as using chlorom...

Claims

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