Abstract: The appearance of post-transition-metal catalysts breaks the history of preparing branched polyolefin. Not only do these catalysts synthesize hyperbranched polyethylene, but also they could control the topology and molecular weight of polyethylene. In this paper, we summarize the advance in preparing branched polyethylene by following the route of Ni and Pd-based post-transition-metal catalysts. We illustrate the methods and influencing factors of controlling the topology and structure of polyolefin. Furthermore, we introduce the present application of hyperbranched polyethylene as polymer processing aids and lubricant improvers, which provide new ideas for further studying the application of polyethylene on materials processing aids.

Key words: post-transition-metal catalyst, hyperbranched polyethylene, topology, control, application

摘要： 后过渡金属催化剂的出现改写了超支化聚烯烃的合成历史，其不仅可以催化乙烯聚合成超支化聚乙烯，还可以实现对聚乙烯产品拓扑结构的控制以及相对分子质量的裁剪。本文沿着镍系以及钯系两大类后过渡金属催化剂的路线综述了近年来合成超支化聚乙烯的研究进展，重点对控制聚乙烯拓扑结构的方法及影响因素进行了详细的综述，并对超支化聚乙烯在高分子加工助剂及润滑油改进剂等领域的应用现状进行了介绍，这为进一步研究超支化聚乙烯在材料加工助剂等方面的应用提供了新的思路。

关键词: 后过渡金属催化剂, 超支化聚乙烯, 拓扑, 控制, 应用