Catalyst for copolymerization of carbon dioxide and epoxy and method of manufacturing the same

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United States of America

PATENT NO 11965061
APP PUB NO 20230159700A1
SERIAL NO

17876498

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Abstract

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A ternary composite catalyst of diethylzinc and yttrium trifluoroacetate loaded on chitin for copolymerization of carbon dioxide, epoxy cyclohexane and ethylene oxide is provided. The ternary composite catalyst exhibits strong catalytic activity for the ternary copolymerization of carbon dioxide, cyclohexane oxide and ethylene oxide. A high molecular weight and content of ester chain is maintained. Conventional rare earth ternary catalysts leave residues in the polymer, and the polymer requires rinsing with hydrochloric acid. The ternary composite catalyst can be removed through filtration. The average molecular weight of the resulting polycarbonate is more than 100,000, and the ester chain content is more than 90%. The resulting polymer has a lower metal content. The ternary composite catalyst can be used in agricultural film, disposable packaging and other polymer materials.

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Patent Owner(s)

  • CHANGZHOU UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Qun Changzhou, CN 43 348
Chen, Shengchun Changzhou, CN 7 0
He, Mingyang Changzhou, CN 11 1
Ji, Zenan Changzhou, CN 1 0
Qian, Junfeng Changzhou, CN 7 0
Sun, Zhonghua Changzhou, CN 6 15
Zhou, Weiyou Changzhou, CN 3 1

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