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Catalyst component and catalyst system for olefin polymerization and application thereof

A technology for olefin polymerization and catalysts, which is applied in the field of catalyst components for olefin polymerization, and can solve problems such as high preparation costs and narrow molecular weight distribution of olefin polymers

Active Publication Date: 2017-11-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation cost of this type of compound is high, and the molecular weight distribution of the prepared olefin polymer is narrow

Method used

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  • Catalyst component and catalyst system for olefin polymerization and application thereof
  • Catalyst component and catalyst system for olefin polymerization and application thereof
  • Catalyst component and catalyst system for olefin polymerization and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Take 10 g of the above-mentioned dialkoxymagnesium carrier, 50 mL of toluene, and 0.8 g of compound 1 to prepare a suspension. In a 300mL reaction kettle that has been repeatedly replaced with high-purity nitrogen, add 40mL of toluene and 60mL of titanium tetrachloride, raise the temperature to 65°C, then slowly add the prepared suspension into the kettle, keep the temperature at 65°C for 1 hour, and slowly raise the temperature to 110°C, when the temperature rises to 80°C, add 2.2g of compound 1, keep the temperature at 110°C for 1 hour, press filter to obtain a solid. The obtained solid was washed twice with 150 mL of toluene, and the liquid was removed by pressure filtration. A mixed solution of 90 mL of toluene and 60 mL of titanium tetrachloride was added and stirred at 110° C. for 1 hour, and treated twice in this way. Press filtration, wash the obtained solid once with toluene and 4 times with 150 mL of hexane, press filter and dry to obtain the catalyst solid c...

Embodiment 2

[0110] Using the same preparation method as in Example 1, replacing compound 1 with compound 2, the catalyst solid component was prepared.

Embodiment 3

[0112] Using the same preparation method as in Example 1, replacing compound 1 with compound 3, the catalyst solid component was prepared.

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PUM

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Abstract

The invention relates to a catalyst component and a catalyst system for olefin polymerization and an application thereof. The catalyst component provided by the invention consists of titanium, magnesium, halogen, and internal electron donor, wherein the internal electron donor comprises 1,2-cyclohexyl dicarbonate ester compound shown as formula (I). The catalyst component and the catalyst system comprising same provided by the invention are applicable to the development of polyolefin, particularly polypropylene, resin. (img file='DDA0000982187580000011.TIF' wi='309' he='517' / ).

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a catalyst component for olefin polymerization, a catalyst system and applications thereof. Background technique [0002] A solid titanium catalyst component based on magnesium, titanium, halogen and an electron donor, known in the art as a Ziegler-Natta catalyst, can be used for CH 2 =CHR Polymerization of olefins, especially in the polymerization of α-olefins with 3 or more carbon atoms, can give polymers with higher yield and higher stereoregularity. It is well known that electron donor compounds are one of the essential components in Ziegler-Natta catalyst components. From the monobasic carboxylate compounds disclosed in the early stage, such as ethyl benzoate, to the widely used dibasic aromatic carboxylate compounds, such as di-n-butyl phthalate or diisobutyl phthalate, Then to the recently disclosed 1,3-diethers (CN1020448C), succinates (CN1313869) and 1,3-diol ester...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/649C08F110/06
CPCC08F10/00C08F110/06C08F4/6494C08F2500/04C08F2500/12C08F2500/18C08F2500/15
Inventor 张锐谭忠周奇龙徐秀东李凤奎宋维玮于金华尹珊珊
Owner CHINA PETROLEUM & CHEM CORP
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