AMINATION METHOD FOR POLYSTYRENE RESIN, AND METHOD FOR IMMOBILIZING ENZYME USING AMINATED RESIN

WIPO Patent Application WO/2022/205565

A1

Provided are an amination method for a polystyrene resin, and a method for immobilizing an enzyme using an aminated polystyrene resin. The amination method comprises: in a solvent, using a catalyst to catalyze a polystyrene resin and an enamine salt to carry out Friedel–Crafts alkylation reaction to obtain an aminated polystyrene resin, wherein the catalyst is a Lewis acid catalyst. By means of the Friedel–Crafts alkylation reaction, the enamine salt is grafted onto the polystyrene resin, and the polystyrene resin is aminated. The conditions of the Friedel–Crafts alkylation reaction are easy to control, the post-treatment process is simple, and it is only necessary to remove the catalyst and the unreacted enamine salt by washing, such that the amination method has few steps and is simple and easy to implement; meanwhile, the amination method further avoids the use of a noble metal catalyst, thereby reducing the production cost. When the obtained polystyrene resin is used as an enzyme immobilization carrier, a good immobilization effect and the usability are achieved, and an enzyme immobilization carrier library is greatly expanded.

HONG HAO (US)
XIAO YI (CN)
ZHANG NA (CN)
LIN HAN (CN)
PAN LONG (CN)
VYASA WILLIAMS (US)
MA LITENG (CN)
CUI YUXIA (CN)
GAO YANYAN (CN)

PCT/CN2021/092799

October 06, 2022

May 10, 2021

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ASYMCHEM LAB TIANJIN CO LTD (CN)

C08F8/44; C08F112/08; C12N11/082

WO2018187945A1

2018-10-18

CN112707977A	2021-04-27
CN101776686A	2010-07-14
JP2003024800A	2003-01-28
CN106222157A	2016-12-14

KANGXIN PARTNERS, P.C. (CN)

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