Ligand and preparation method thereof, olefin polymerization catalyst and preparation method and application thereof

A technology of catalysts and ligands, which is used in ligands and their preparation, olefin polymerization catalysts and their preparation. The catalyst is used in the field of catalytic olefin polymerization, which can solve the problem of low insertion rate, low polymerization activity, poor thermal stability of catalysts, etc. problems, achieve different performance, high insertion rate, and maintain high activity

Pending Publication Date: 2022-03-01
WANHUA CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two types of catalysts have a phenomenon that the insertion rate is too low for large hindered olefin monomers such as cycloolefins.
When the metallocene catalyst (structure d) constructed with non-bridging phenocene group

Method used

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  • Ligand and preparation method thereof, olefin polymerization catalyst and preparation method and application thereof
  • Ligand and preparation method thereof, olefin polymerization catalyst and preparation method and application thereof
  • Ligand and preparation method thereof, olefin polymerization catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0073] Example L, ligand Indch 2 (T-bu) C = NH (ligand 1) synthesis

[0074]

[0075] (a) under a nitrogen atmosphere, dissolved in fluid (200 mmol) in 500 ml of anhydrous THF, -45 ° C, adding n-butyllithium (300 mmol), gradually increased to room temperature, stirring at room temperature overnight, filtered, and water with no water The n-hexane was washed three times to obtain a lithium salt of indole: Indli.

[0076] (b) Under the nitrogen atmosphere, lithium salt Indli (125 mmol) was added to 500 ml of anhydrous THF, and 1-bromo-3,3-dimethyl-2-butanone BR was added dropwise under -45 ° C. CH 2 (T-bu) C = O (100 mmol), after the end of the drop, gradually increased to room temperature, and continued to react 2H, filtered, remove the solvent under reduced pressure, and purified with column chromatography to obtain an intermediate.

[0077] (c) The intermediate (50 mmol) was dissolved in tetrahydrofuran (200 mL), and the stirring was added to the system to add ammonium chlorid...

Example Embodiment

[0078] Example 2, ligand CH 3 Indch 2 (T-bu) C = NH (ligand 2) synthesis

[0079]

[0080] (a) under a nitrogen atmosphere, the methacole (200 mmol) was dissolved in 50 ml of anhydrous THF, and the n-butyl lithium (200 mmol) was added dropwise, gradually increased to room temperature, stirred at room temperature overnight, filtered, and used Unhydrated n-hexane washing three times to obtain a lithium salt of methylpase: CH 3 Indli.

[0081] (b) Under the nitrogen atmosphere, the lithium salt of methylline 3 Indli (110mmol) was added to 50 ml of anhydrous THF, and 1-bromo-3,3-dimethyl-2-butanone BR was added dropwise under -45 ° C. CH 2 (T-bu) C = O (100 mmol), gradually increased to room temperature after the dropwise addition, stirred at room temperature for 2 h, filtered, removed the solvent under reduced pressure, and purified by column chromatography to obtain an intermediate.

[0082] (c) The intermediate (50 mmol) was dissolved in tetrahydrofuran (200 mL), and the stirri...

Example Embodiment

[0083] Example 3, ligand Ind (me) CH (T-bu) C = NH (ligand 3) synthesis

[0084]

[0085] (a) under a nitrogen atmosphere, lyal (200 mmol) was dissolved in 50 ml of anhydrous THF, and n-butyl lithium (160 mmol) was added dropwise, gradually increased to room temperature, stirred at room temperature overnight, filtered, and water with no water The n-hexane was washed three times to obtain a lithium salt of indole: Indli.

[0086] (b) Under a nitrogen atmosphere, a lithium salt Indli (100 mmol) of nitrogen was added to 500 ml of anhydrous THF, and 2-bromo-4-dimethyl-3-pentanone Br (ME) was added dropwise under -45 ° C. CH (T-bu) C = O (150 mmol), gradually increased to room temperature after completion of the dropwise, stirred at room temperature for 2 h, filtered, evaporated.

[0087] (c) The intermediate (50 mmol) was dissolved in tetrahydrofuran (200 mL) and ammonium chloride (40 mmol), water (100 ml) was added to the system. The system temperature was raised to 60 ° C, and the...

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Abstract

The invention discloses a ligand and a preparation method thereof as well as an olefin polymerization catalyst and a preparation method thereof. The ligand has a structure as shown in a formula I. The ligand and IVB group metal are complexed to form the catalyst, and the catalyst can be used for catalyzing an olefin polymerization reaction. The catalyst, alkyl aluminum, methylaluminoxane (MAO) or modified methylaluminoxane (MMAO), a boron reagent and the like form a catalyst composition which can efficiently catalyze olefin polymerization. The catalyst is simple to prepare, high in catalytic activity and good in thermal stability, the using amount of the cocatalyst in the catalyst composition is low, and the catalyst composition can be suitable for preparing high-quality polyolefin materials, especially polyethylene, ethylene/1-octylene copolymer and ethylene/norbornene copolymer through solution polymerization.

Description

Technical field: [0001] The invention relates to the field of olefin polymerization, in particular to a ligand and a preparation method thereof, an olefin polymerization catalyst and a preparation method thereof, and the application of the catalyst in catalyzing olefin polymerization. Background technique: [0002] Polyolefin materials are the fastest growing and most productive synthetic resins. They have become an important pillar of modern science and technology and social development, and are widely used in various fields of industrial production and daily life. Driven by the market's drive for new polyolefin materials, high-end polyolefin materials such as polyolefin elastomer (POE), polyolefin block copolymer (OBC), and cycloolefin copolymer (COC) have been developed and applied. In the research and development of these polyolefin materials, the research and development and industrialization of olefin polymerization catalysts are important drivers for the development o...

Claims

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Application Information

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IPC IPC(8): C07C251/16
CPCC07C251/16C07D333/58C07C251/24C07C251/20C07F1/02C07C45/68C07C249/02C07D333/56C07F7/28C07F7/00C08F4/6592C08F110/02C08F110/06C08F110/08C08F110/14C08F210/16C08F210/02C07C2602/08C07C2602/10C07C2603/50C07C2601/08C07C49/792C07C49/84C07C49/563C08F210/14C08F232/08C07C49/225
Inventor 邓明郭华石正喜吕英东贾礼洋高原黄明路
Owner WANHUA CHEM GRP
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