同质非金属素4组金属与[N,N]双酸联 () 进行olefin聚合.
Zhao Wen1, Changjiang Wu1, Jian Chen1
1SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., No. 14 Beisanhuan Donglu, Chao Yang District, Beijing 100013, China.
Polymers
|February 10, 2024
概括
第4组含有[N,N]连接体的非金属催化剂使得先进的多烯材料成为可能. 这些催化剂为各种聚合物应用提供结构稳定性和特殊的聚合行为.
科学领域:
- 聚合物化学 聚合物化学
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
背景情况:
- 催化剂的开发对于聚烯材料至关重要.
- 4组 (Ti,Zr,Hf) 非金属催化剂与[N,N]双联体在烯聚合过程中越来越突出.
- 捐赠体连接物是高度活跃的催化剂的核心,使多样化的聚烯结构成为可能.
研究的目的:
- 在过去二十年中审查了4组非金属催化剂与[N,N]配体的进展.
- 引入催化剂前体并讨论它们在烯聚合中的作用.
- 探索连接体结构,共催化剂和聚合条件对催化剂性能和聚合物特性的影响.
主要方法:
- 专注于具有与4组金属协调的[N,N]双酸连接体的催化剂前体.
- 对连接体结构的分析,包括阿米丁,瓜尼迪纳托,胺和N-异环类型.
- 研究共催化剂选择和聚合条件.
主要成果:
- 这些催化剂产生多聚烯,如超高分子量聚乙烯 (UHMWPE) 和具有高共纳体结合的共聚物 (乙烯/norbornene,乙烯/α-olefin).
- 可以制造出高同位性或同位性聚烯.
- 催化剂活性和由此产生的聚合物特性受到连接物设计和反应参数的显著影响.
结论:
- [N,N]结合的4组非金属催化剂代表了合成先进的多烯材料的强大平台.
- 定制连接体结构和优化聚合条件是控制聚合物结构和特性的关键.
- 这一领域继续为开发具有定制功能的新型聚烯提供重大潜力.
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