Highly alkali-stable cationic polymers and their preparation methods and applications

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United States of America

PATENT NO 12240924
APP PUB NO 20240317902A1
SERIAL NO

18652840

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Abstract

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The present invention discloses a preparation method of highly alkali-stable cationic polymers, including the following steps: placing a polymerization mixture comprising 1-R1-3-piperidinone or its salts or hydrate thereof and arene monomers in a first organic solvent, performing catalytic polycondensation by adding organic strong acids, and obtaining a polymer dispersion with piperidine moieties; slowly dropping the dispersion of the polymer with piperidine moieties into a first precipitant, and obtaining a polymer powder with piperidine moieties after drying; dissolving the polymer powder with piperidine moieties of in a second organic solvent, after adding the quaternization reagent, obtaining a cationic polymer solution. The cationic polymers prepared by the above steps can greatly improve its alkaline stability by adjusting the connection position between the piperidinium group and the arylene units, it can be used in applications such as, for example, anion exchange membranes and catalyst layer binders, featuring with outstanding alkaline stability.

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Patent Owner(s)

  • HEFEI UNIVERSITY OF TECHNOLOGY; ANQING POLYROCKS TECHNOLOGY RESEARCH CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Duoying Hefei, CN 1 0
Ding, Yunsheng Hefei, CN 3 0
Liang, Yatao Anqing, CN 1 0
Wang, Tao Hefei, CN 1447 9693
Wei, Haibing Hefei, CN 3 0
Xu, Ming Hefei, CN 491 9425
Zhu, Hongfang Anqing, CN 1 0

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