Polymerization of conjugated dienes with a homogeneous Ziegler–Natta catalytic system based on a carbon-bridged bis(phenolate) yttrium alkyl complex
作者:Kan Hong、Zhenhua Liang、Xufeng Ni、Zhiquan Shen
DOI:10.1039/c6ra06144c
日期:——
A novel carbon-bridged bis(phenolate) yttrium alkyl complex [(EDBP)Y(CH2SiMe3)(THF)3] (1) was synthesized by a reaction of 2,2′-ethylidene-bis(4,6-di-tert-butyl-phenol) (EDBPH2) and Y(CH2SiMe3)3. The structure of complex 1 was determined by X-ray crystallography. Homo- and copolymerization of isoprene and 1,3-butadiene was carried out and catalyzed by the 1/MAO/triisobutylaluminum (TIBA) system. The
通过2,2'-亚乙基-双(4,6-)的反应合成了一种新型的碳桥双(酚盐)钇烷基络合物[(EDBP)Y(CH 2 SiMe 3)(THF)3 ](1)。二-叔丁基苯酚)(EDBPH 2)和Y(CH 2森达3)3。配合物1的结构通过X射线晶体学确定。进行异戊二烯和1,3-丁二烯的均相和共聚,并通过1 / MAO /三异丁基铝(TIBA)体系进行催化。TIBA / MAO和总[Al] / [ 1的影响还研究了摩尔比对聚合活性和区域选择性,聚合体系动力学和可控特性的影响。