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Ethylene polymerization Ziegler-Natta catalyst electron donor, catalyst component, and catalyst

A technology of electron donor and catalyst, which is applied in the field of ethylene polymerization Ziegler-Natta catalyst electron donor, which can solve the problems of high price and limited application, and achieve the effects of low production cost, less fine powder of polymerization products, and good particle size distribution

Active Publication Date: 2016-08-17
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN1958620A adopts tetraethoxysilane as electron donor, and CN2010102089331 adopts a class of siloxane compound (POSS) with organic functional groups as electron donor, but the price of this siloxane compound is very expensive, which limits its Application in catalyst

Method used

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  • Ethylene polymerization Ziegler-Natta catalyst electron donor, catalyst component, and catalyst
  • Ethylene polymerization Ziegler-Natta catalyst electron donor, catalyst component, and catalyst
  • Ethylene polymerization Ziegler-Natta catalyst electron donor, catalyst component, and catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Put 4.76 g (50 mmol) of anhydrous MgCl 2 , 75 milliliters of decane and 16.3 grams (125 mmol) of isooctyl alcohol were heated to 125° C., and reacted at a constant temperature for 3 hours to obtain a homogeneous and transparent solution. To this solution, 15 mmol of acetoxytrimethoxysilane was added and stirred at 50° C. for 2 hours to dissolve acetoxytrimethoxysilane in the solution. The homogeneous solution obtained above was cooled to room temperature, and then added dropwise to 150 mL of TiCl with stirring at -10 °C within 1 hour. 4 middle. After dropping, the temperature of the mixture was maintained at -10°C for 1 hour, then the temperature was raised to 120°C at a certain rate of temperature increase under stirring, and the temperature was maintained for 2 hours. After 2 hours of reaction, the resulting solid was separated by hot filtration. The solid catalyst is fully washed with decane and hexane respectively until no precipitated titanium can be detected in...

Embodiment 2

[0038] Put 4.76 g (50 mmol) of anhydrous MgCl 2 , 75 milliliters of decane and 16.3 grams (125 mmol) of isooctyl alcohol were heated to 125° C., and reacted at a constant temperature for 3 hours to obtain a homogeneous solution. To this solution was added 15 mmol of acetoxytriethoxysilane and stirred at 50° C. for 2 hours to dissolve acetoxytriethoxysilane in the solution. All homogeneous solutions obtained above were cooled to room temperature, and then added dropwise to 200 mL of TiCl with stirring at -15 °C within 1 hour 4 middle. After completion of the dropwise addition, the temperature of the mixture was maintained at -15°C for 1 hour, then raised to 120°C over 4 hours with stirring, and maintained at this temperature for 2 hours. After 2 hours of reaction, the resulting solid was separated by hot filtration. The solid catalyst is fully washed with decane and hexane respectively until no precipitated titanium compound can be detected in the cleaning liquid, and a soli...

Embodiment 3

[0042] 4.76 g (50 mmol) of anhydrous magnesium chloride, 75 ml of decane and 16.3 g (125 mmol) of isooctyl alcohol were heated to 125° C. and reacted at constant temperature for 3 hours to obtain a homogeneous solution. To this solution was added 15 mmol of acetoxytripropoxysilane and stirred at 50° C. for 2 hours to dissolve acetoxytripropoxysilane in the solution. All the homogeneous solutions obtained above were cooled to room temperature, and then added dropwise to 150 mL of TiCl with stirring at 0 °C within 1 hour 4 middle. After completion of the dropwise addition, the temperature of the mixture was maintained at 0°C for 1 hour, then raised to 120°C over 2 hours with stirring, and maintained at this temperature for 2 hours. After 2 hours of reaction, the resulting solid was separated by hot filtration. The solid catalyst is fully washed with decane and hexane respectively until no precipitated titanium compound can be detected in the cleaning liquid, and a solid titani...

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Abstract

The invention relates to Ziegler-Natta catalyst electron donor, comprising a catalyst component of the electron donor and a catalyst of the electron donor. The electron donor is acetoxylsilane compound, the catalyst prepared with the acetoxylsilane compound as an electron donor shows high catalytic activity, good hydrogen modulation sensitivity and good copolymerizing performance when used in ethylene polymerization and copolymerization and can be used in homopolymerization of catalytic ethylene or copolymerization of ethylene with other Alpha-olefins to produce high-performance polyolefin material with high bulk density, narrow particle size distribution and low fine particle content.

Description

technical field [0001] The invention belongs to the field of ethylene polymerization catalysis, and relates to a Ziegler-Natta catalyst, in particular to an ethylene polymerization Ziegler-Natta catalyst electron donor, a catalyst component and a catalyst. technical background [0002] In recent years, the development of high-end polyolefin special materials has always been the focus in this field, and the research and development of corresponding catalysts is also a difficult point in the field of polyolefin research. Ziegler-Natta titanium series catalysts are still the main catalysts for the industrial production of polyolefins. They have been developed with high catalytic activity, good hydrogen adjustment sensitivity, good copolymerization performance, uniform particle size distribution of polymers, less fine powder, and low polymer wax content. Low-cost, stable and controllable production of polyolefin catalysts is the goal pursued by researchers. There are many liter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F110/02C08F4/646
CPCC08F10/02C08F110/02C08F4/6465C08F2500/18C08F2500/12C08F2500/24
Inventor 姜涛高金龙李健李明凯张眉邵怀启陈延辉闫冰
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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