Phenoxy 2-imino imidazolidine metal complex and its preparation method and application

Abstract

The invention relates to phenoxy-2-iminoimidazolidine metal complex and a preparation method and application thereof. The preparation method comprises the steps of first, reacting oxalyl chloride with 1,3-dimethylimidazolidinone to obtain chloroformyl imidazole hydrochloride; second, reacting an amino-containing compound with the chloroformyl imidazole hydrochloride to obtain a ligand; third, subjecting the ligand and a nickel-containing catalyst precursor or palladium-containing catalyst precursor to coordination reaction to obtain the phenoxy-2-iminoimidazolidine metal complex. The phenoxy-2-iminoimidazolidine metal complex is used as a main catalyst, the main catalyst and a promoter jointly catalyze to polymerize norbornene, and the obtained norbornene is higher than 8*105g / mol in weight-average molecular weight and has narrow molecular weight distribution. The phenoxy-2-iminoimidazolidine metal complex prepared herein has high catalytic activity, may be 106-105 orders of magnitude under the action of the promoter, and is effective in catalyzing polymerization of norbornene.

Description

technical field [0001] The invention belongs to the field of catalysts and relates to a phenoxy 2-imine imidazolidine metal complex. Background technique [0002] In the early 1950s, Ziegler-Natta catalysts successfully polymerized ethylene under mild conditions, which led to the gradual development of metal-organic olefin polymerization catalysts. Although Ziegler-Natta catalysts were subsequently applied to the industrial production of polyethylene, due to their heterogeneous nature, the structure of the polymerization product was uncontrollable. In order to control the polymerization process more precisely and obtain products with well-defined structures, more and more researchers have been working on the research of transition metal homogeneous olefin polymerization catalysts for decades. From metallocene catalysts, non-metallocene early transition metal catalysts to late transition metal catalysts, people are trying to develop catalysts with novel structures on the bas...

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Problems solved by technology

[0009] At present, there are relatively few reports on metal-organic olefin polymerization catalysts containing the above-mentioned imidazoline derivatives in the ligand structure, and existing literature shows that many ligands containing imidazoline derivatives are used for early transition metal olefins. Polymerization catalysts, there are few literatures on the coordination of late transition metals, especially nickel and palladium, especially the late transition metals with 2-imino imidazolidine structure formed by saturated C-C bonds at the 4,5-position on the nitrogen heterocycle Olefin polymerization catalysts are almost unreported

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