Enhancing α-Diimine Catalysts for High-Temperature Ethylene Polymerization

被引：195

作者：

Rhinehart, Jennifer L. ^{[1
]}

Mitchell, Nolan E. ^{[1
]}

Long, Brian K. ^{[1
]}

机构：

[1] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

来源：

ACS CATALYSIS | 2014年 / 4卷 / 08期

关键词：

polyethylene; nickel; alpha-diimine; catalysis; high temperature; coordination polymerization; LIVING POLYMERIZATION; HALIDES SYNTHESIS; NICKEL-CATALYST; METAL CATALYSTS; RECENT PROGRESS; COMPLEXES; PROPYLENE; OLEFINS; DESIGN;

D O I：

10.1021/cs500694m

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sterically demanding 2,6-bis(diphenylmethyl)-4-methylaniline was condensed onto acenaphthenequinone via an aminoalane intermediate and metalated using nickel(II) dibromide dimethoxyethane adduct to yield bis[(2,6-dibenzhydry1-4-methylimino) acenaphthene]dibromo nickel(II). This alpha-diimine precatalyst was examined for high-temperature ethylene polymerization and proved to be thermally robust at temperatures as high as 90 degrees C, demonstrating enhanced activity as compared with related catalysts. Furthermore, the resultant polymers displayed increased melting transitions as compared with those produced using catalysts with identical N-aryl moieties appended to nonacenaphthenequinone-derived ligand backbones.

引用

页码：2501 / 2504

页数：4

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