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Monodentate compound containing phenoxy, preparation method and application thereof

A compound, phenoxy technology, applied in the field of phenoxy-containing monocene compounds and their preparation and application, can solve the problem of low catalytic activity

Active Publication Date: 2007-11-28
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alastair J.Nielson et al. reported in 1999 that they synthesized a non-monocene phenol oxygen type catalyst (structure shown in Figure b) to catalyze the synthesis of random polypropylene from propylene, and the catalytic activity of these compounds is low

Method used

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  • Monodentate compound containing phenoxy, preparation method and application thereof
  • Monodentate compound containing phenoxy, preparation method and application thereof
  • Monodentate compound containing phenoxy, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1-Phenyl-2,3,4,5-tetramethylcyclopentadienyl-(2,4,6-tri-tert-butylphenoxy)-titanium dichloride catalyst

[0022] (1) Synthesis of 1-phenyl-2,3,4,5-tetramethylcyclopentenyl titanium trichloride

[0023]

[0024] In a 50ml dry ampoule, weigh 1.61g (8.13mmol) of 1-phenyl-2,3,4,5-tetramethyl-cyclopentadiene, add 20ml of anhydrous tetrahydrofuran, and slowly 7.5ml n-BuLi (9.00mmol) was slowly added dropwise. After one hour, the reaction system gradually rose to room temperature. After 8 hours of reaction, the solution turned into a white paste. 2.06ml of trimethylchlorosilane was slowly added to the reaction solution at -78°C, and then reacted at room temperature for 2 After 1 hour, the solution gradually turned bright yellow. The remaining trimethylchlorosilane and tetrahydrofuran solvents were distilled off under reduced pressure and extracted with hexane to obtain a yellow oil.

[0025] In a dry ampoule, under a nitrogen atmosphere, the above-mentioned trimethylsily...

Embodiment 2

[0033] The synthetic process of 1-phenyl-2,3,4,5-tetramethylcyclopentenyl titanium trichloride, reaction under ice-water bath condition, other operations are identical with embodiment 1, obtain catalyst product 0.78g, produce Rate 71.80%.

[0034] Catalyze ethylene polymerization according to the method in embodiment 1, obtain polymerization product 5.24g, catalyst activity is 2.21 * 10 6 gPE(molTi h) -1 , The weight-average molecular weight of polymer measured by GPC instrument is 270,000.

Embodiment 3

[0036] The synthesis process of 1-phenyl-2,3,4,5-tetramethylcyclopentenyl titanium trichloride, reacted at 40°C, and other operations were the same as in Example 1 to obtain 0.75g of product, the yield 69.15%.

[0037] Catalyze butene polymerization according to the method in embodiment 1, obtain polymerization product 3.84g, catalyst activity is 1.14 * 10 6 gPE(molTi h) -1 , The weight-average molecular weight of polymer measured by GPC instrument is 83000.

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PUM

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Abstract

The present invention relates to monocyclopentadienyl phenoxyl substituted cyclopentadienyl metallocene compound serving as olefin polymerizing catalyst and its preparation process and application. The preparation process includes the following steps: 1. reaction of cyclopentadienyl derivative and MCl4 in the molar ratio of 2 to 1 in ether solvent to produce cyclopentadienyl metal chloride; 2. reaction of strong alkali compound and ligand derivative containing phenoxyl side chain in the equal molar ratio in ether solvent to produce metal salt of the corresponding ligand derivative; and 3. reaction of the ligand derivative containing phenoxyl side chain and the cyclopentadienyl metal chloride in the equal molar ratio in organic solvent to obtain the catalyst. The catalyst has excellent olefin polymerizing catalyzing effect.

Description

technical field [0001] The invention relates to a monophenoxy-substituted cyclopentadienyl metallocene compound as an olefin polymerization catalyst, a preparation method and application thereof, and is especially suitable for catalytically synthesizing high-molecular-weight random polypropylene. Background technique [0002] Atactic polypropylene (APP) was initially used as a by-product of isotactic polypropylene, and it was mostly used as fuel or used to make waterproof paper, paper interlayer or coating, etc. Now the use of APP has a new development. Blending APP with other polymer materials can make adhesives, sealants, sound insulation boards and communication cables. APP mixed with asphalt for paving can improve impact resistance and heat resistance. APP with high molecular weight can also be used as additives for rubber, plastics, lubricating oil and paraffin, low-voltage cable materials and strippable coatings. Chlorination modification of APP can be used to prepar...

Claims

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Application Information

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IPC IPC(8): C07F17/00C08F4/649
Inventor 郎笑梅母瀛吕春胜吴林美王刚付义李金才张铭辉高宇新赵增辉邹恩广赵成才姜进宪李欣王淑英
Owner PETROCHINA CO LTD
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