| Autor: |
Zhenyu Han, Yongqiang Zhang, Liang Wang, Guangqian Zhu, Jia Kuang, Guangyu Zhu, Guangqiang Xu, Qinggang Wang |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Polymers, Vol 15, Iss 5, p 1231 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2073-4360 |
| DOI: |
10.3390/polym15051231 |
| Popis: |
3,4-Enhanced polymerization of isoprene catalyzed by late transition metal with high activity remains one of the great challenges in synthetic rubber chemistry. Herein, a library of [N, N, X] tridentate iminopyridine iron chloride pre-catalysts (Fe 1–4) with the side arm were synthesized and confirmed by the element analysis and HRMS. All the iron compounds served as highly efficient pre-catalysts for 3,4-enhanced (up to 62%) isoprene polymerization when 500 equivalent MAOs were utilized as co-catalysts, delivering the corresponding high-performance polyisoprenes. Furthermore, optimization via single factor and response surface method, it was observed that the highest activity was obtained by complex Fe 2 with 4.0889 × 107 g·mol(Fe)−1·h−1 under the following conditions: Al/Fe = 683; IP/Fe = 7095; t = 0.52 min. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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