Solid catalyst component of olefin polymerization catalyst, preparation method thereof, olefin polymerization catalyst and olefin polymerization method

A solid catalyst and olefin polymerization technology, applied in the field of olefin polymerization, to achieve the effect of low fine powder content, good regularity and good regularity

Pending Publication Date: 2021-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned problems existing in existing olefin polymerization catalysts, the invention provides a solid catalyst component of an olefin polymerization catalyst and a preparation method thereof, an olefin polymerization catalyst and a method for olefin polymerization

Method used

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  • Solid catalyst component of olefin polymerization catalyst, preparation method thereof, olefin polymerization catalyst and olefin polymerization method
  • Solid catalyst component of olefin polymerization catalyst, preparation method thereof, olefin polymerization catalyst and olefin polymerization method
  • Solid catalyst component of olefin polymerization catalyst, preparation method thereof, olefin polymerization catalyst and olefin polymerization method

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preparation example Construction

[0063] According to a second aspect of the present invention, the present invention provides a method for preparing a solid catalyst component of an olefin polymerization catalyst, the preparation method comprising:

[0064] (1) In the presence of an inert solvent, the catalyst component A, an aluminum alkyl and an external electron donor compound are subjected to a contact reaction; the catalyst component A contains titanium, magnesium, chlorine and an internal electron donor compound;

[0065] (2) adding α-olefin to the reaction system obtained in step (1) to carry out the first polymerization reaction;

[0066] (3) Adding ethylene to the reaction system obtained in step (2) to carry out the second polymerization reaction.

[0067] In the preparation method of the present invention, the internal electron donor compound includes a 1,3-diether compound, and the structure of the 1,3-diether compound is shown in formula (1):

[0068]

[0069] Among them, R 1 and R 2 each i...

preparation example 1

[0101]Add 1.1L of titanium tetrachloride to a stirred 3L glass reaction bottle and cool down to -20°C, then add 100g of magnesium chloride alcoholate spherical carrier [Mg(C 2 h 5 Oh) 2.6 ] (average particle size D50=45μm, the same below), after reacting at -20°C for 0.5 hours, slowly raise the temperature to 120°C, add 15g of 2-isopropyl-2-isopentyl-1,3-di Methoxypropane and 0.6g tributyl phosphate were reacted at 120°C for 0.5 hours, the liquid was filtered off, 1L titanium tetrachloride was added, and the liquid was filtered off at 120°C for 2 hours to obtain a solid product. The obtained solid product was washed 5 times with hexane, and finally vacuum-dried to obtain catalyst component A (average particle size D50=40 μm), denoted as A1.

preparation example 2

[0103] Add 1.2L of titanium tetrachloride to a stirred 3L glass reaction bottle and cool down to -20°C, then add 100g of magnesium chloride alcoholate spherical carrier [Mg(C 2 h 5 Oh) 2.6 ], after reacting at -20°C for 0.5 hours, slowly raise the temperature to 120°C, add 15g of 2-isopropyl-2-isopentyl-1,3-dimethoxypropane during the heating process, and then at 120°C React for 0.5 hours, filter off the liquid, add 1L of titanium tetrachloride, and maintain at 120°C for 2 hours, then filter off the liquid to obtain a solid product, wash the obtained solid product with hexane for 5 times, and finally dry it in vacuum to obtain a catalyst Component A (average particle size D50=40 μm) is denoted as A2.

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Abstract

The invention relates to the field of olefin polymerization, and discloses a solid catalyst component of an olefin polymerization catalyst, a preparation method of the solid catalyst component, the olefin polymerization catalyst and an olefin polymerization method. The solid catalyst component comprises polyethylene, poly alpha-olefin, titanium, magnesium, chlorine and an internal electron donor compound. Based on the total weight of the solid catalyst component, the content of polyethylene is 0.1-89 wt%, the content of poly alpha-olefin is 0.1-89 wt%, the content of titanium is 0.1-3.5 wt%, the content of magnesium is 1-16 wt%, the content of chlorine is 2-50 wt%, and the content of the internal electron donor compound is 0.6-15 wt%. The internal electron donor compound comprises a 1, 3-diether compound shown as a formula (1). The solid catalyst component of the olefin polymerization catalyst is high in regularity and few in broken particles, and the fine powder content of polyolefinprepared through catalysis of the olefin catalyst containing the catalyst component is low.

Description

technical field [0001] The invention relates to the field of olefin polymerization, in particular to a solid catalyst component of an olefin polymerization catalyst and a preparation method thereof, an olefin polymerization catalyst and an olefin polymerization method. Background technique [0002] The preparation of Ziegler-Natta catalysts by supporting titanium compounds and electron donor compounds on active magnesium halides is well known in the prior art. Usually, the active magnesium halide often uses the adduct of magnesium halide and alcohol, which is used as a carrier to react with titanium halide and electron donor compound to obtain a spherical catalyst. At present, a large number of internal electron donor compounds have been disclosed, such as polycarboxylic acid, monocarboxylic acid ester or polycarboxylic acid ester, acid anhydride, ketone, monoether or polyether, alcohol, amine, etc. and their derivatives, among which Commonly used are dibasic aromatic carbo...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F110/06C08F4/649
CPCC08F10/00C08F110/06C08F4/6494C08F4/6497Y02P20/52
Inventor 刘月祥夏先知赵瑾谭扬陈龙高富堂任春红张天一李威莅凌永泰刘涛
Owner CHINA PETROLEUM & CHEM CORP
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