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Supported non-metallocene polyolefin catalyst, preparation method and application

A polyolefin catalyst, non-metallocene technology, applied in the field of supported non-metallocene polyolefin catalysts, can solve the problems of sticky kettle, narrow molecular weight distribution of olefin polymers, low insertion rate of comonomers, etc. Mild conditions and simple preparation

Active Publication Date: 2013-03-13
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a class of supported non-metallocene polyolefin catalysts, which are composed of metal complexes and magnesium compounds, which solves the problem of metal complexes falling off easily during the polymerization process in the traditional loading mode, sticking to the kettle, and particle shape Unable to effectively control, low comonomer insertion rate and other problems, the molecular weight distribution of the synthesized olefin polymer is narrow (1.6-3.0);

Method used

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  • Supported non-metallocene polyolefin catalyst, preparation method and application
  • Supported non-metallocene polyolefin catalyst, preparation method and application
  • Supported non-metallocene polyolefin catalyst, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0063] (1) Chemical treatment of magnesium compounds

[0064] Take 10.0g of spherical magnesium chloride, wherein the ethanol content is 52%, and the volume average particle diameter D[4,3] is 48um, add 50ml of hexane, slowly add 18ml of triethylaluminum dropwise under nitrogen atmosphere, after the dropwise addition, mechanically stir (rotating speed 100 revs / min) continue reaction 2h, suction filtration, wash twice with 50ml hexane, dry under reduced pressure to obtain activated spherical magnesium chloride, denoted as SMC.

[0065] (2) Preparation of Catalyst 1

[0066]

[0067] Add 0.1g of the metal complex A1 shown in the figure above into 10ml of dichloromethane, and after it is completely dissolved, add it into 1.0g of chemically activated spherical magnesium chloride SMC, and mechanically stir for 2 hours under a nitrogen atmosphere (speed 100 rpm ), dried under reduced pressure, washed twice with 50ml hexane, and dried under reduced pressure to obtain a supported ...

Embodiment 2

[0069] Basically the same as in Example 1, the corresponding supported non-metallocene olefin polymerization catalysts C2-C10 were obtained by using the following metal complexes A2-A10 respectively.

[0070]

Embodiment 3

[0072] It is basically the same as Example 1, but the following changes are made:

[0073] 0.15 g of non-metallocene olefin polymerization catalyst A1 was dissolved in 10 ml of dichloromethane.

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Abstract

The invention relates to a supported non-metallocene polyolefin catalyst, a preparation method and an application. The catalyst has the characteristic of directly supporting a metal complex on a magnesium compound. When the non-metallocene catalyst is combined with a cocatalyst of alkyl aluminium or alkyl aluminoxane to be used for catalyzing the homopolymerization / copolymerization of olefins, only a small amount of the cocatalyst is needed, and ethylene copolymer and homopolymer products with narrow molecular weight distribution (1.6-3.0), uniform comonomer distribution, uniform polymer particle size distribution and spherical or spherical-like polymer particles can be obtained in high activity.

Description

technical field [0001] The invention relates to a kind of supported non-metallocene polyolefin catalyst, preparation method and application. The supported non-metallocene polyolefin catalyst has the characteristics of a single active center catalyst. Under the action of a co-catalyst, the catalyst can be used to catalyze the homopolymerization of ethylene or the copolymerization of ethylene and α-olefin to obtain an olefin polymer with narrow molecular weight distribution, uniform particle size distribution, and spherical or near-spherical particle size. Background technique [0002] With the rapid development of the polyolefin industry, the production of high-performance polyolefin materials has attracted more and more attention. At present, international research believes that the production of high-performance polyolefin materials can be realized in two ways: 1) using modified Ziegler-Natta catalysts, relying on the improvement of chemical processes; 2) using new single-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/645C08F2/04C08F2/34C08F10/02C08F10/06
Inventor 唐勇卫兵李军方孙秀丽
Owner SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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