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Catalyst component for olefin polymerization, preparation method of catalyst component, catalyst, application of catalyst, polyolefin and preparation method of polyolefin

A technology of olefin polymerization and catalyst, which is applied in the field of catalyst and its application and polyolefin and its preparation, which can solve the problems of high polymer fine powder content, poor hydrogenation sensitivity, poor catalyst morphology, etc., and achieve melt flow index High, wide molecular weight distribution, good morphology of olefin polymerization catalyst

Active Publication Date: 2022-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the disadvantages of poor hydrogen adjustment sensitivity, poor catalyst morphology, and high fine powder content of the polymer obtained when used for olefin polymerization in the prior art.

Method used

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  • Catalyst component for olefin polymerization, preparation method of catalyst component, catalyst, application of catalyst, polyolefin and preparation method of polyolefin
  • Catalyst component for olefin polymerization, preparation method of catalyst component, catalyst, application of catalyst, polyolefin and preparation method of polyolefin
  • Catalyst component for olefin polymerization, preparation method of catalyst component, catalyst, application of catalyst, polyolefin and preparation method of polyolefin

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specific Embodiment approach

[0091] In a second aspect of the present invention, according to a preferred embodiment of the present invention, the method includes:

[0092] Mix the titanium-containing compound and the carrier at minus 30°C to minus 120°C, then add the internal electron donor compound into the mixed system, and raise the temperature to 80°C to 130°C to carry out the contact reaction, The catalyst component is obtained.

[0093] According to the first and second aspects of the present invention, preferably, the carrier represented by formula (2) is prepared by the following method:

[0094] (1) Under the condition that an inert liquid medium is optionally present, the components in the first component are mixed and emulsified in turn to obtain an emulsified product. The first component contains zinc metal elemental, represented by the formula MgXY Magnesium halide and formula R 1 Alcohol compounds represented by OH;

[0095] (2) reacting the emulsified product with the second component, ...

preparation example 1

[0163] It is used to illustrate the preparation of the catalyst support of the present invention.

[0164] (1) In a 0.6L reaction kettle, add 0.08mol magnesium chloride, 0.96mol ethanol, 0.015mol zinc powder (average particle size 15 microns), 0.3g polyvinylpyrrolidone, and heat up to 90°C under stirring. After constant temperature reaction for 2 hours, then emulsification to obtain emulsified product;

[0165] (2) Add 0.48mol epichlorohydrin to the emulsified product to carry out contact reaction. The conditions of contact reaction include: the temperature is 90° C., the time is 30 min, press filter after the reaction, and wash the press filter product 5 times with hexane , and vacuum-dried to obtain a catalyst spherical carrier Z1 for olefin polymerization.

[0166] After testing, the composition of the catalyst carrier Z1 is:

[0167]

[0168] After testing, the average particle diameter (D50) of the catalyst carrier Z1 is 59 microns, and the particle size distribution...

preparation example 2

[0171] It is used to illustrate the preparation of the catalyst support of the present invention.

[0172] (1) In a 0.6L reaction kettle, add 300mL white oil, 0.08mol magnesium chloride, 0.48mol ethanol, 0.015mol zinc powder (average particle size 11 microns), 0.3g polyvinylpyrrolidone, and heat up to 100°C under stirring, After constant temperature reaction for 1 hour, emulsification is then obtained to obtain an emulsified product;

[0173] (2) Add 0.16mol epichlorohydrin to the emulsified product to carry out contact reaction, the conditions of contact reaction include: the temperature is 100°C, the time is 20min, press filter after the reaction, and wash the press filter product 5 times with hexane , and finally the product was vacuum-dried to obtain a spherical carrier Z2 for an olefin polymerization catalyst.

[0174] After testing, the composition of the carrier Z2 is:

[0175]

[0176] After testing, the average particle diameter (D50) of the carrier Z2 is 51 micr...

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Abstract

The invention relates to the field of olefin polymerization catalysts, and discloses a catalyst component for olefin polymerization, a preparation method of the catalyst component, a catalyst, application of the catalyst, polyolefin and a preparation method of the polyolefin, and the catalyst component is obtained by contact reaction of an internal electron donor compound shown in a formula (1), a carrier shown in a formula (2) and a titanium-containing compound shown in a formula (3). The olefin polymerization catalyst obtained by using the catalyst component provided by the invention is high in hydrogen regulation sensitivity, and prepared polyolefin such as polypropylene powder is relatively high in melt flow index and low in fine powder content. Ti (ORn) 4-yLy is represented by formula (3).

Description

technical field [0001] The invention relates to the field of olefin polymerization catalysts, in particular to catalyst components for olefin polymerization and its preparation method, catalyst and its application, polyolefin and its preparation method. Background technique [0002] As we all know, Ziegler-Natta catalyst is a multi-component heterogeneous catalyst, and the internal electron donor as one of its components plays a crucial role in the performance of the catalyst. It will have an important impact on the stereospecific ability of the catalyst, the activity of the catalyst and the properties of the resulting polymer. [0003] It is based on this important role of internal electron donors that different types of electron donors have been studied in detail. However, the supporting medium of the internal electron donor, that is, the support of the Ziegler-Natta catalyst also plays a very important role in the catalyst, and the performance of the catalyst prepared by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F110/06C08F4/02C08F4/649
CPCC08F10/00C08F110/06C08F4/02C08F4/6494C08F4/6495C08F2500/12C08F2500/03Y02P20/52
Inventor 凌永泰周俊领冯再兴夏先知刘月祥谢伦嘉李威莅任春红赵瑾谭扬高富堂陈龙张天一万真段瑞林马长友
Owner CHINA PETROLEUM & CHEM CORP
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