Ester compound and application thereof in catalyst for olefin polymerization

An ester compound, selected technology, applied in the direction of organic chemistry, etc., can solve the problems of low catalytic activity and narrow molecular mass distribution of polymers

Active Publication Date: 2010-06-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In industrial production, each of these internal electron donors has certain defects in practical applications: the catalysts using aromatic diester compounds have low catalytic activity; the catalysts using diether compounds have relatively low catalytic activity. High, with good hydrogen modulation sensitivity, but the relative molecular mass distribution of the obtained polymer is narrow, etc.

Method used

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  • Ester compound and application thereof in catalyst for olefin polymerization
  • Ester compound and application thereof in catalyst for olefin polymerization
  • Ester compound and application thereof in catalyst for olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0047] Embodiment 1~3 prepares 1-acyloxy-3-alkoxypropane compounds

Embodiment 1

[0048] Example 1: Preparation of 2,2-dimethyl-1-o-toluoyloxy-3-methoxypropane

[0049] Add 1.6 g of 2,2-dimethyl-3-methoxy-1-propanol into a 100 ml three-neck flask, and then add 20 ml of dichloromethane. Stir and add 1.5 ml pyridine. Add 10ml of dichloromethane to the constant pressure dropping funnel, and dissolve 2.5ml of o-toluoyl chloride in it. Under stirring conditions, o-benzoyl chloride solution was added dropwise. React at room temperature for 12 hours. After stopping the reaction, add 30 ml of 5% hydrochloric acid solution to wash twice, then wash with 30 ml of saturated sodium bicarbonate solution for 2 to 3 times, and finally wash with water until the pH value is 7. The organic layer was separated and dried overnight by adding anhydrous magnesium sulfate. Filter and evaporate the solvent dichloromethane. The obtained crude product was separated and purified by column chromatography. The filler is 60-80 mesh silica gel for column chromatography, and the eluen...

Embodiment 2

[0052] Example 2: Preparation of 2,2-dimethyl-1-m-toluoyloxy-3-methoxypropane

[0053] According to the operation method of Example 2, 5.1g of 2,2-dimethyl-3-methoxyl-1-propanol, 3.6ml of pyridine, and 6ml of m-toluoyl chloride undergo an acylation reaction, and the obtained crude product is purified by distillation under reduced pressure , to give 2,2-dimethyl-1-m-toluoyloxy-3-methoxypropane.

[0054] Elemental analysis: C content: 71.43%; H content: 8.35%. (the compound C 14 h 20 o 3 Theoretical content of elements: C, 71.16%; H, 8.53%).

[0055] 1 H-NMR (300MHZ, CDCl 3 )(δ, ppm): 1.03(s, 6H, C(CH 3 ) 2 ), 2.41(s, 3H, ArCH 3 ), 3.24(s, 2H, CH 2 OCH 3 ), 3.34(s, 3H, OCH 3 ), 4.13 (s, 2H, COOCH 2 ), 7.26-7.35 (t, 2H, ArH), 7.83-7.85 (d, 2H, ArH).

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Abstract

The invention designs an ester compound having the general formula (I), which is used as an internal electron donor of a titaniferous catalyst component and applied to the titaniferous catalyst component for olefin polymerization. A 1-subsituted benzoyloxy-3-alkoxypropane compound using the general formula (I) is used as the titaniferous catalyst component synthesized by the internal electron donor. When a catalyst made from the titaniferous catalyst component is used for olefin polymerization, especially propylene polymerization, the catalyst has high catalytic activity; an obtained polymer has high isotacticity and wide molecular weight distribution.

Description

technical field [0001] The present invention relates to an ester compound for olefin polymerization. More specifically, it relates to the use of 1-substituted benzoyloxy-3-alkoxypropane compounds as internal electron donor compounds in the synthesis of olefin polymerization catalysts, and their application in olefin polymerization reactions. Background technique [0002] In the research of Ziegler-Natta catalysts in this field, titanium-based catalysts supported on magnesium halide carriers have been widely used in the synthesis of polypropylene. After magnesium halide and alcohol form alcoholate, the catalyst prepared by reacting with titanium halide and electron donor compound has high catalytic efficiency and stereospecificity when used in olefin polymerization, especially propylene polymerization. As one of the components of the catalyst, the electron donor compound plays an important role in the catalyst, especially when participating in the synthesis of supported cata...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/76C08F4/649C08F10/00
Inventor 谢伦嘉李志强赵思源凌永泰胡青
Owner CHINA PETROLEUM & CHEM CORP
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