A kind of olefin polymerization catalyst system and its application

An olefin polymerization and catalyst technology, applied in the field of olefin polymerization, can solve problems such as difficulties, and achieve the effects of simple polymerization method, high polymerization activity, and improved hydrogen modulation sensitivity
CN106543312BActive Publication Date: 2019-06-28CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2019-06-28

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Abstract

The invention relates to the field of olefin polymerization, and discloses a catalyst system. The catalyst system comprises a titanium containing solid catalyst component, an aluminium alkyl compound and an external electron donor compound; the titanium containing solid catalyst component comprises at least two kinds of internal electron donor compounds, which contain a diol ester type compound and a carboxylate compound; and the external electron donor compound is an ether ester compound. The invention also provides an application of the catalyst to the olefin polymerization. The solid catalyst component which comprises the diol ester type compound and the carboxylate compound as internal electron donors is used for carrying out the olefin polymerization, and the ether ester compound is used for the olefin polymerization, so that high polymerization activity of the catalyst is maintained, and at the same time hydrogen response of the catalyst is improved.
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Description

Technical field

[0001] The present invention relates to the field of olefin polymerization. Specifically, the present invention relates to a catalyst system and its application in olefin polymerization. Background technique

[0002] As we all know, the catalyst system used in the homopolymerization or copolymerization of α-olefins is generally composed of three parts: (1) main catalyst (solid catalyst), (2) co-catalyst (usually alkyl aluminum compound) And (3) The external electron donor compound added during polymerization.

[0003] The use of one or more external electron donor compounds to control the stereoregularity and morphology of the polymer during the polymerization reaction is well known to those skilled in the art. In addition to affecting the stereoregularity of the polymer, external electron donors often affect other aspects of the catalyst's performance to varying degrees. Although many kinds of compounds are known as external electron donors, the use of different ...

Claims

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