O-methoxy phenylhydrazone dicaryon metal complex and preparation method and application thereof

A technology of o-methoxyphenylhydrazone and o-methoxy, which is applied in the application field of preparing high molecular weight polyethylene catalysts, and achieves the effects of high yield, cheap and easy-to-obtain raw materials, and simple and easy preparation methods
CN105503939AInactive Publication Date: 2016-04-20SHANXI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANXI UNIV
Publication Date
2016-04-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an o-methoxy phenylhydrazone dicaryon metal complex, a preparation method thereof. The complex is used as a catalyst for preparing high-molecular-weight polyethylene. The complex is obtained through the method including the steps that o-methoxy phenylhydrazone reacts with a tetrahydrofuran solution with a half of molar weight of TiX4(THF)2 after being subjected to the hydrogen abstraction together with lithium diisopropylamide (LDA). The prepared dual-core dicaryon complex serving as the catalyst is easy to prepare, applied raw materials are low in price and easy to obtain, and the activation of methylaluminoxane (MAO) or modified methylaluminoxane (MMAO) can be used for catalyzing vinyl polymerization. It is shown through experiment results that the catalyst system can be used for preparing high-molecular-weight linear polyethylene, and most of obtained polyethylene has the weight-average molecular weight above one million, the high melting point between 133.4 DEG C and 134.8 DEG C, the molecular weight between 1.90 and 3.33 and intermediate catalysis activity.
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Description

technical field

[0001] The invention relates to a dinuclear titanium metal complex, in particular to a dinuclear titanium metal complex of o-methoxyphenylhydrazone, a preparation method thereof, and an application thereof as a catalyst for preparing high molecular weight polyethylene. Background technique

[0002] Due to the fact that the molecule contains two central metal atoms at the same time, the binuclear metal catalyst has a special effect (that is, a synergistic effect) on each other, which can affect the activity of the olefin polymerization catalyst and the performance of the polymer. The melting point and crystallinity of the obtained polymer , molecular weight and molecular weight distribution have changed to a certain extent (Massimiliano, et al, Chem. Rev., 2011, 111, 2450-2485). For example, the metallocene olefin polymerization catalyst is a kind of olefin polymerization catalyst that has been industrialized very early. It has the characteristics of high cata...

Claims

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