Catalyst for ethylene polymerization and application thereof

A technology of ethylene polymerization and catalyst, which is applied in the field of olefin polymerization and can solve the problem of demanding ligand substituents

Active Publication Date: 2021-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of catalyst has strict requirements on ligand substituents.

Method used

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  • Catalyst for ethylene polymerization and application thereof
  • Catalyst for ethylene polymerization and application thereof
  • Catalyst for ethylene polymerization and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Preparation of bisphenol metal complex 7

[0074] Dissolve bisphenol compound 3 (2.24mmol) in ether solvent, add pure KH solid (8.96mmol) to the solution at -78°C and react for 1 hour, return to room temperature, and continue to react for 2 hours. Afterwards, the solution was transferred to a dichloromethane solution of metal complex 2 (4.48 mmol) at -78 °C through a double-angled needle, and reacted at this temperature for 1 hour, and then the system was gradually returned to room temperature, and then reacted for 12 Hour. After the reaction was finished, the solvent was removed with a vacuum line, the residue was washed with dichloromethane and filtered through diatomaceous earth, the filtrate was sucked dry, and the crude product was recrystallized with dichloromethane / n-hexane to obtain an orange product (yield 90% ), the orange product is characterized as follows:

[0075] 1 H NMR (CDCl 3 ,400MHz):δ=7.45(dd,J=7.6,2.0Hz,2H,aryl-H),7.25(s,4H,aryl-H),7.14-7.21(m,4...

Embodiment 2

[0079] Preparation of bisphenol metal complex 7

[0080] Dissolve bisphenol compound 3 (2.24mmol) in ether solvent, add pure KH solid (2.24mmol) to the solution at -78°C and react for 1 hour, return to room temperature, and continue to react for 8 hours. Afterwards, the solution was transferred to a dichloromethane solution of metal complex 2 (4.00 mmol) at -78°C through a double-angled needle, and reacted at this temperature for 1 hour, and then the system was gradually returned to room temperature, and then reacted for 18 Hour. After the reaction was finished, the solvent was removed with a vacuum line, the residue was washed with dichloromethane and filtered through diatomaceous earth, the filtrate was sucked dry, and the crude product was recrystallized with dichloromethane / n-hexane to obtain an orange product (yield 61% ).

Embodiment 3

[0082] Preparation of bisphenol metal complex 7

[0083] Dissolve bisphenol compound 3 (2.24mmol) in ether solvent, add pure KH solid (22.4mmol) to the solution at 40°C and react for 1 hour, return to room temperature, and continue to react for 0.5 hour. Afterwards, the solution was transferred to a dichloromethane solution of metal complex 2 (4.93 mmol) at 40°C through a double-angle needle, and reacted at this temperature for 6 hours. After the reaction was completed, the solvent was removed with a vacuum line, and the remaining The product was washed with dichloromethane and filtered through celite, the filtrate was sucked dry, and the crude product was recrystallized with dichloromethane / n-hexane to obtain an orange product (yield 73%).

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Abstract

The present invention discloses an ethylene polymerization catalyst, which comprises a main catalyst and a co-catalyst, the main catalyst is a bisphenol metal complex represented by a formula I, and the co-catalyst comprises an organic aluminum compound; in the formula I, R1, R1', R2 and R2' are the same or different and are independently selected from hydrogen and substituted or unsubstituted C1-C20 alkyl; R3-R7 and R3'-R7' are the same or different and are each independently selected from hydrogen and substituted or unsubstituted C1-C20 hydrocarbyl; R8 and R9 are the same or different, and are each independently selected from hydrogen or substituted or unsubstituted C1-C20 hydrocarbyl; M and M'are the same or different and are selected from group IV metals; and X is halogen.

Description

technical field [0001] The invention relates to a catalyst for ethylene polymerization and its application in olefin polymerization, belonging to the field of olefin polymerization. Background technique [0002] Since the beginning of the 21st century, with the improvement of the national economy and the needs of the national defense industry, polymer materials, especially polyolefin materials, have played an increasingly important role: due to the abundance and low cost of polyolefin raw materials, easy processing and molding, every year in the world The polyolefin products produced within the scope exceed 100 million tons, becoming one of the largest industries; polyolefin materials have relatively small density, good chemical resistance, water resistance, good mechanical strength, electrical insulation, etc. Features, can be used for films, pipes, plates, various shaped products, wires and cables, etc., not only widely used in agriculture, packaging, automobiles, electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F4/6592C08F110/02C08F210/16C08F210/14C07F1/06C07F1/02C07F1/04
CPCC08F10/02C08F210/16C08F110/02C07F1/06C07F1/02C07F1/04C08F2420/04C08F4/65925C08F2500/03C08F2500/12C08F210/14
Inventor 韩书亮宋文波李昊坤金钊王路生方园园
Owner CHINA PETROLEUM & CHEM CORP
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