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Catalyst component for olefin polymerization and preparation method thereof

A technology of olefin polymerization and catalyst, which is applied in the field of olefin polymerization, can solve the problems of long synthetic route, high production cost, and difficult synthesis, and achieve the effects of narrow particle size distribution, high isotacticity of polymers, and high catalytic activity

Active Publication Date: 2017-05-10
SICHUAN JINCHENG CHEM CATALYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, phthalate ester electron donors will cause certain harm to the human body and the environment, and succinate, glycol esters, and diether electron donors have problems such as difficult synthesis, long synthesis routes, and high production costs.

Method used

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  • Catalyst component for olefin polymerization and preparation method thereof
  • Catalyst component for olefin polymerization and preparation method thereof
  • Catalyst component for olefin polymerization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1. Synthesis of solid titanium main catalyst components:

[0057] ⑴ After high-purity N 2 In a fully replaced glass bottle, 7.14 g (75 mmol) of anhydrous magnesium chloride, 37.5 ml of decane and 35.1 ml (225 mmol) of 2-ethylhexanol were added successively, and the suspension was heated at 130°C for 3 hours to obtain homogeneous solution.

[0058] (2) Add the magnesium chloride alcoholate solution in step (1) dropwise to 200 ml (1.8 moles) of titanium tetrachloride solution maintained at -24°C.

[0059] (3) Heat the mixture in step (2) to 40°C within a certain period of time, add 1.08 g (7.5 mmol) of cycloisopropyl malonate to the mixture, and then raise the temperature to 110°C. After the temperature reached 110°C, the mixture was stirred at the same temperature for 2 hours.

[0060] ⑷Recover the generated solid by hot filtration. It was resuspended in 200 ml of titanium tetrachloride, then reheated to 110°C, stirred for 2 hours, and filtered. The solid was thorou...

Embodiment 2

[0064] 1. Synthesis of solid titanium main catalyst components:

[0065] Except replacing cycloisopropyl malonate with cycloisopentyl malonate, other is the same as embodiment 1.

[0066] The analysis results of solid titanium main catalyst components are as follows: Ti, 2.83%; Mg, 16.8%; electron donor, 9.2%.

[0067] 2. Polymerization: with embodiment 1, catalyst analysis results are shown in Table 1, and polymerization results are shown in Table 2 and Table 3.

Embodiment 3

[0069] 1. Synthesis of solid titanium main catalyst components:

[0070] Except that cycloisopropyl malonate is replaced with cycloisopropyl malonate, other is the same as embodiment 1.

[0071] The analysis results of solid titanium main catalyst components are as follows: Ti, 2.4%; Mg, 15.9%; electron donor, 11.3%.

[0072] 2. Polymerization: with embodiment 1, catalyst analysis results are shown in Table 1, and polymerization results are shown in Table 2 and Table 3.

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Abstract

The invention relates to an internal electron donor of an olefinic polymerization catalyst, a catalyst ingredient, a preparation method of the catalyst ingredient and a catalyst. The structure of the internal electron donor compound is shown in formula I. The internal electron donor compound can be matched with MgCl2, so that the chemical action of the internal electron donor and MgCl2 is relatively high, the internal electron donor is prevented from being removed by a promoter alkyl aluminum during a polymerization reaction process, the stereotactic capability of a solid titanium catalyst is improved, the catalytic activity is relatively high, and the hydrogen response capability and the copolymerization performance are relatively good. When the internal electron donor is combined with electron donors of phthalate esters and diethers, polyolefin resin with high molecular weight distribution can be prepared. The catalyst prepared according to the method is high in particle shape, centralized in particle size distribution, and adjustable in particle diameter and size, is used for olefinic polymerization, and is an olefin polymer being environment-friendly, high in polymer isotacticity, good in particle shape, and less in fine powder.

Description

technical field [0001] The invention belongs to the field of olefin polymerization, and relates to a catalyst for olefin polymerization, especially an internal electron donor and a catalyst component of a solid titanium-based catalyst for olefin polymerization, especially propylene polymerization or copolymerization, a preparation method for the catalyst component, and The catalyst of the catalyst component. Background technique [0002] Since the Italian scientist Professor Natta discovered the Ziegler-Natta catalyst for the production of isotactic polypropylene in 1954, after more than sixty years of research and development, the polypropylene catalyst has developed from the first generation to the fifth generation. The replacement of the catalyst is due to the continuous use of new electron donor compounds, so it can be said that the electron donor compound is the core of the polypropylene catalyst. USP 4,298,718 and USP 4,495,338 disclose Ziegler-Natta catalysts using m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/649C08F4/646
Inventor 刘富明张波高金龙
Owner SICHUAN JINCHENG CHEM CATALYST CO LTD
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