Preparation method of catalyst component for olefin polymerization

A technology of olefin polymerization and catalyst, which is applied in the field of preparation of catalyst components, and can solve problems such as limiting the industrial application of catalysts, low catalyst activity, and reduced catalyst orientation ability

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art shows that the use of phthalic anhydride as a co-elution agent is a preferred example, but the catalyst activity thus prepared is not high
In order to improve the activity of the catalyst, it is reported that malonate is used as a precipitation aid, but this type of catalyst reduces the orientation ability of the catalyst while improving the activity of the catalyst, which limits the industrial application of the catalyst.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of catalyst component for olefin polymerization
  • Preparation method of catalyst component for olefin polymerization
  • Preparation method of catalyst component for olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1: the preparation of catalyst component

[0061] Under the protection of nitrogen, add 4.8g of anhydrous magnesium chloride, 19.5g of isooctyl alcohol and 19.5g of decane solvent into a 500mL reactor equipped with a stirrer, heat to 130°C, react for 1.5 hours until the magnesium chloride is completely dissolved, add 2mmol di Diethyl butylmalonate, 6 mmol phthalic anhydride, continue to react at 130°C for 1 hour to obtain an alcoholate; cool the alcoholate to room temperature. Under the protection of nitrogen, the above alcoholate was added dropwise to 120mL titanium tetrachloride solution precooled to -22°C, and slowly warmed up to 100°C, and 10mmol of 3,5-heptanediol dibenzoate compound was added, Raise the temperature to 110°C for 2 hours, filter while hot, add 120 ml of titanium tetrachloride, raise the temperature to 110°C for 1 hour, and filter. The filtered solid particles were washed 4 times with anhydrous hexane, and dried to obtain a dry catalyst c...

Embodiment 2

[0062] Embodiment 2: the preparation of catalyst component

[0063] The method is the same as in Example 1, except that 3,5-heptanediol dibenzoate is replaced by 2,4-pentanediol dibenzoate.

Embodiment 3

[0064] Embodiment 3: the preparation of catalyst component

[0065] The method is the same as in Example 1, except that diethyl diisobutyl malonate is used to replace diethyl dibutyl malonate.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a preparation method of a catalyst component for olefin polymerization. In preparation of the catalyst component, a compound shown in the general formula (I) and an organic acid anhydride compound are used together as a precipitation aid so that a certain synergistic effect is obtained. The prepared catalyst has good fluidity, good particle morphology, uniform particle size distribution and excellent integrated performances. In a propylene polymerization reaction, the catalyst has high activity, a good orientation capacity and high isotacticity and is conducive to industrial application.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a preparation method of a catalyst component for olefin polymerization. Background technique [0002] The preparation of the magnesium chloride supported catalyst usually first activates the magnesium chloride by chemical method, and then treats the highly active magnesium chloride with a titanium compound. Chemical activation of magnesium chloride generally dissolves magnesium chloride in the solvent system first, and then removes the solvent by heat treatment or adds a precipitation agent to re-precipitate magnesium chloride from the solution. And when using techniques such as adding a precipitation agent to make magnesium chloride re-precipitate from the solution, it is often necessary to add a precipitation aid to obtain a solid with uniform particle size. [0003] It has been shown in the prior art that phthalic anhydride is a preferred example as an eluting a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/654C08F4/651C08F4/649C08F4/646C08F10/02C08F10/06
Inventor 蔡晓霞高明智刘海涛马吉星陈建华马晶李昌秀胡建军王军
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap