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Polymers
Volume 16
Issue 8
10.3390/polym16081136
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Article

Non-Isocyanate Synthesis of Aliphatic Polyurethane by BiCl3-Catalyzed Transurethanization Polycondensation

by
Bungo Ochiai
* and
Yuriko Kobayashi
Graduate School of Science and Engineering, Yamagata University, Yamagata 990-8510, Japan
*
Author to whom correspondence should be addressed.
Polymers 2024, 16(8), 1136; https://doi.org/10.3390/polym16081136
Submission received: 29 March 2024 / Revised: 15 April 2024 / Accepted: 17 April 2024 / Published: 18 April 2024
(This article belongs to the Section Polymer Chemistry)
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Abstract

Non-isocyanate polyurethane synthesis by non-Sn catalysis is an essential challenge toward green polyurethane synthesis. Bismuth compounds are attractive candidates due to their low cost, low toxicity, and availability to urethane chemistry. This work applied various Bi catalysts to the self-polycondensation of a bishydroxyurethane monomer and found BiCl3 to be an excellent catalyst through optimization. The catalytic activity and price of BiCl3 are comparable to those of Bu2SnO, while its toxicity is significantly low. BiCl3 is, therefore, a promising alternative to Sn-based catalysts in non-isocyanate polyurethane synthesis.
Keywords: polyurethane; bismuth; polycondensation; non-isocyanate polyurethane; bismuth; polycondensation; non-isocyanate

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MDPI and ACS Style

Ochiai, B.; Kobayashi, Y. Non-Isocyanate Synthesis of Aliphatic Polyurethane by BiCl3-Catalyzed Transurethanization Polycondensation. Polymers 2024, 16, 1136. https://doi.org/10.3390/polym16081136

AMA Style

Ochiai B, Kobayashi Y. Non-Isocyanate Synthesis of Aliphatic Polyurethane by BiCl3-Catalyzed Transurethanization Polycondensation. Polymers. 2024; 16(8):1136. https://doi.org/10.3390/polym16081136

Chicago/Turabian Style

Ochiai, Bungo, and Yuriko Kobayashi. 2024. "Non-Isocyanate Synthesis of Aliphatic Polyurethane by BiCl3-Catalyzed Transurethanization Polycondensation" Polymers 16, no. 8: 1136. https://doi.org/10.3390/polym16081136

APA Style

Ochiai, B., & Kobayashi, Y. (2024). Non-Isocyanate Synthesis of Aliphatic Polyurethane by BiCl3-Catalyzed Transurethanization Polycondensation. Polymers, 16(8), 1136. https://doi.org/10.3390/polym16081136

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