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Catalyst components, catalyst systems and applications thereof for olefin polymerization

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

Active Publication Date: 2021-03-16
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 components, catalyst systems and applications thereof for olefin polymerization
  • Catalyst components, catalyst systems and applications thereof for olefin polymerization
  • Catalyst components, catalyst systems and applications thereof for olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] 10 g of the above-mentioned dialkoxy magnesium carrier, 50 mL of toluene, and 0.8 g of compound internal electron donor 1 were taken respectively to prepare a suspension. In a 300mL reaction kettle that has been repeatedly replaced by high-purity nitrogen, add 40mL of toluene and 60mL of titanium tetrachloride, heat up to 65°C, then slowly add the prepared suspension to the kettle, keep the temperature at 65°C for 1 hour, and slowly heat up to 110°C, when the temperature rises to 80°C, 2.2 g of compound internal electron donor 1 is added, the temperature is kept at 110°C for 1 hour, and the solid is obtained by pressure filtration. 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 the mixture was stirred at 110° C. for 1 hour and treated in this manner twice. Press filter, the obtained solid is washed once with toluene and...

Embodiment 2-9

[0109] The internal electron donors were respectively replaced with compound internal electron donors 2-9, and other steps were the same as those in Example 1, and the catalyst solid component was prepared.

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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 2,2'-dialkyl-1,3-dicarbonate ester compound shown as formula (I) and 2,2'-dialkyl-1,3-diether compound shown as formula (II). 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='DDA0000982150690000011.TIF' wi='1028' he='414' / ).

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 carbon atoms or more, 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 early disclosed monobasic carboxylic acid ester compounds, such as ethyl benzoate, to the widely used dibasic aromatic carboxylic acid ester compounds, such as di-n-butyl phthalate or diisobutyl phthalate, Then to the recently disclosed 1,3-diethers (CN1020448C), succinates (CN1313869) and 1,3-dio...

Claims

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Application Information

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