Application of Cyclotriveratrol and Its Derivatives in Olefin Polymerization Catalysts

A technology for olefin polymerization and derivatives is applied in the application field of cyclotriveratrol and its derivatives in olefin polymerization catalysts, and can solve the problems of poor versatility, ethyl benzoate cannot be used as a gas-phase polyethylene catalyst, and the like, to increase activity

Active Publication Date: 2021-02-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned electron donation can improve the performance of olefin polymerization catalysts in a certain aspect, but in the field of Ziegler-Natta type olefin polymerization catalysts, there are few reports on electron donors that can simultaneously improve catalyst activity, hydrogen modulation sensitivity and copolymerization performance , and its versatility is not good; for example, ethyl benzoate used in slurry polyethylene catalyst cannot be applied to gas phase polyethylene catalyst

Method used

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  • Application of Cyclotriveratrol and Its Derivatives in Olefin Polymerization Catalysts
  • Application of Cyclotriveratrol and Its Derivatives in Olefin Polymerization Catalysts
  • Application of Cyclotriveratrol and Its Derivatives in Olefin Polymerization Catalysts

Examples

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preparation example 1

[0129] Under ice-bath conditions, 1,2-phthalylene dimethyl ether (1.0g) was added dropwise to a mixture of aqueous formaldehyde (4mL / 38%) / 0.1mL chloroform / concentrated hydrochloric acid (6mL) for reaction, 30 After 1 min, the solution became a paste and stirring was continued for 4 h at room temperature. The solid was collected by filtration, washed with ice water, and thoroughly dried to obtain 0.5 g of compound A represented by formula (IV).

[0130]

preparation example 2

[0132] Under ice-bath conditions, 3-methoxy-4-bromo-benzyl alcohol (3.6 g) was dissolved in 30 mL of methanol, and 15 mL of 65% perchloric acid was added dropwise under ice-bath and stirring. Under nitrogen protection, the mixture was stirred in an ice bath for 18 h. 30 mL of water was slowly added to the reaction product, followed by extraction of the organic phase with dichloromethane. The organic phase was carefully washed with aqueous sodium hydroxide solution, then with deionized water, and dried. After exhausted and purified by column chromatography, 0.8 g of compound M represented by formula (V) was obtained.

[0133]

preparation example 3

[0135] Dissolve 1,2-o-phenylenediethyl ether (3.3g) and paraformaldehyde (0.63g) in dry dichloromethane (30mL), stir under ice bath, and slowly drop into boron trifluoride ether (4.25g) , after the dropwise addition, remove the ice-water bath, stir at room temperature for 3 h, follow the reaction by TLC until the reaction is complete, stop the reaction, wash the mixture 3 times with water, separate the organic layer, spin dry the organic solvent to obtain an oil, add a small amount of acetone to dissolve the oil The substance was dissolved, and a large amount of methanol was added to it, and it was left standing in the refrigerator to precipitate a white solid. After suction filtration and thorough drying, 1.5 g of compound B represented by formula (VI) was obtained.

[0136]

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Abstract

The invention belongs to the field of olefin polymerization catalysts, and specifically relates to applications of cyclotriveratrylene and derivatives thereof in the olefin polymerization catalysts. The structure of the cyclotriveratrylene and the derivatives thereof is shown as a formula (1), and M1-M6 are selected from hydrogen, hydroxy, amino, an aldehyde group, a carboxyl group, an acyl group,halogen atoms, etc. The cyclotriveratrylene and the derivatives thereof can be used as internal electron donors and / or external electron donors of a Ziegler-Natta type olefin polymerization catalyst;and compared with olefin polymerization catalysts without containing the cyclotriveratrylene and the derivatives thereof, the activity, hydrogen modulation sensitivity and copolymerization performance of the catalysts can be simultaneously enhanced by introducing the cyclotriveratrylene and the derivatives thereof into the olefin polymerization catalysts. The structure of the cyclotriveratryleneand the derivatives thereof is shown as the formula (1).

Description

technical field [0001] The invention belongs to the field of olefin polymerization catalysts, and specifically relates to the application of cyclotriveratrol and its derivatives in olefin polymerization catalysts. Background technique [0002] In the past 60 years, due to the continuous development of technology, the activity of Ziegler-Natta type olefin polymerization catalysts, hydrogen adjustment sensitivity, copolymerization performance and the bulk density, melt index, molecular weight distribution, fine powder content, copolymerization unit distribution and other parameters of the polymerization powder have been significantly optimized. However, in order to better adapt to the needs of industrial production and produce products with better performance, the above-mentioned parameters of this type of catalyst and its polymerization powder need to be further improved. [0003] In the prior art, the introduction of certain electron donors into olefin polymerization cataly...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F110/02C08F210/16C08F4/649
CPCC08F10/00C08F110/02C08F210/16C08F4/6494C08F4/6498
Inventor黄庭孙竹芳郭子芳周俊领谢伦嘉苟清强杨红旭朱孝恒李秉毅黄廷杰
OwnerCHINA PETROLEUM & CHEM CORP