烯烃聚合用耐热型（α-二亚胺）镍催化剂的进展
Progress in thermal-stable (α-diimine) nickel catalyst for olefin polymerization
臧丹丹 1何峰 1范志强 1傅智盛1
作者信息
- 1. 高分子合成与功能构造教育部重点实验室，浙江大学高分子科学与工程学系，浙江省杭州市 310027
- 折叠
摘要
（α-二亚胺）镍催化剂可以高效地催化乙烯聚合得到高相对分子质量及不同拓扑结构的聚乙烯，但其耐热性能差，在温度不高于60.0℃时会迅速分解，而且随着聚合温度的升高，聚乙烯的相对分子质量通常会下降，限制了该催化剂在工业生产中的应用。通过对与N相连的苯环或者α-二亚胺的骨架结构进行修饰，制备了一系列耐热型（α-二亚胺）镍催化剂。（α-二亚胺）镍催化剂的热稳定性不仅受苯环上取代基及α-二亚胺骨架位阻的影响，也与金属中心周围的空间结构有关。
Abstract
A?series?of?polyethylene?with?high?relative?molecular?mass?and?different?topology?structures?were?produced?with?high-efficiency(α-diimine)nickel?catalyst,however,the?catalyst?was?decomposed?quickly?at?a?temperature?of?less?than?60.0?℃?for?its?poor?thermal?stability.?The?relative?molecular?mass?of?the?resultant?poly-ethylene?would?decrease?with?the?increase?of?the?polymerization?temperature,which?limited?the?application?of?the?catalyst?in?industrial?production.?A?series?of(α-diimine)nickel?catalysts?were?prepared?by?modifying?the?benzene?ring?connected?with?the?N?atom?or?the?skeletal?structure?of?α-diimine.?The?thermal?stability?of?α-diimine?nickel?catalyst?was?affected?not?only?by?the?substituent?groups?on?the?benzene?but?the?spatial?structure?around?the?metal?center?as?well.
关键词
烯烃聚合/镍催化剂/α-二亚胺/支化度Key words
olefin polymerization/nickel catalyst/α-diimine/degree of branching引用本文复制引用
基金项目
国家重点基础研究发展规划项目(2011C B 606 001)
浙江省公益技术研究工业项目(2012C21056)
出版年
2015
NETL
NSTL
维普
万方数据