Supported catalyst for olefin polymerization, and method for preparing polyolefin by using same

A technology for supporting catalyst and main catalyst, applied in the field of polyolefin production, can solve the problems of limitation of catalyst activity improvement, reduction of metallocene metal component content, failure to effectively achieve loading, etc.

Pending Publication Date: 2021-06-18
LOTTE CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the above method, although the technical problems such as fouling are improved, since the loading cannot be effectively realized, the content of the metallocene metal component in the support is reduced, thus there is a limit in the improvement of the activity of the catalyst.

Method used

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  • Supported catalyst for olefin polymerization, and method for preparing polyolefin by using same
  • Supported catalyst for olefin polymerization, and method for preparing polyolefin by using same
  • Supported catalyst for olefin polymerization, and method for preparing polyolefin by using same

Examples

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preparation example Construction

[0111] Another embodiment of the present invention provides a method for preparing polyolefin, comprising: a step of polymerizing olefin in the presence of the supported catalyst.

[0112] The olefin monomer can be ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene , 1-undecene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-eicosene, norbornene, nonadiene, ethylidene norbornene , phenyl norbornene, vinyl norbornene, dicyclopentadiene, 1,4-butadiene, 1,5-pentadiene, 1,6-hexadiene, styrene, α-methylbenzene Ethylene, divinylbenzene, 3-chloromethylstyrene or mixtures thereof.

[0113] The polymerization reaction of the olefin monomer can be carried out in slurry phase (Slurry Phase), liquid phase (Solution Phase), gas phase (Gas Phase) or bulk phase (Bulk Phase). When the polymerization reaction is carried out in a liquid phase or a slurry phase, a solvent or the olefin monomer itself may be used as a medium.

[0114] The solvent ...

preparation example 1

[0121] Preparation example 1: Transition metal compound (tetramethylcyclopentadienyl dimethylsilyl 2-methyl-4-(4-tert-butyl phenyl) indenyl zirconium dichloride (tetramethylcyclopentadienyl dimethylsilyl 2-methyl-4-(4- Synthesis of tert-butylphenyl)indenyl Zr dichloride))

[0122] [The first step: Synthesis of Dimethyl tetramethylcyclopentadienyl chlorosilane]

[0123] Add 600ml of tetrahydrofuran and 50g of tetramethylcyclopentadiene to a 2L flask, and slowly add 170ml of n-butyllithium (n-butyllithium; n-BuLi, 2.5M hexane solution), and stirred at room temperature for 12 hours to react to obtain a reaction solution. After the temperature of the reaction solution was lowered to -10°C again, 170 g of dimethyldichlorosilane was added, followed by stirring at room temperature for 12 hours to react, followed by vacuum drying to obtain a solid reactant. After adding 500ml of n-hexane in the solid reactant to dissolve the solid reactant, filter with a diatomaceous earth filt...

preparation example 2

[0133] Preparation Example 2: Preparation of Supported Catalyst

[0134] After charging 2.0 g of silica (manufacturing company: Grace, product name: XPO-2410) calcined to 600° C. in a Schleck flask (100 ml) in a glove box, 10 ml of anhydrous toluene solution was added thereto to obtain Silica dispersion.

[0135] Next, at 10°C, a solution of 1.2mmol of trimethylaluminum and 1mmol of tetrafluoroquinone dissolved in 5ml of toluene and 10.2ml of methylaluminoxane (containing 10w% methyl A solution of aluminoxane, 15 mmol based on Al, prepared by Grace) was slowly added dropwise to the above-mentioned silica dispersion, and stirred at 0° C. for about one hour to react. After the reaction was complete, the resulting reactant was warmed to 70°C and stirred for three hours and then cooled to 25°C. Hereinafter, the reactant obtained by the cooling will be referred to as "reactant-1".

[0136] In addition, 100 μmol of the synthesized transition metal compound-1 was charged into an...

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Abstract

The present invention relates to a supported catalyst for olefin polymerization, and a method for preparing a polyolefin by using same, the supported catalyst comprising: a main catalyst comprising a metallocene-based compound; a cocatalyst comprising an organoaluminum-based compound; an aromatic compound in which two or more polar groups selected from a hydroxyl group (-OH), an amine group (-NH2), a thiol group (-SH), a carboxyl group (-COOH) and an amide group (-CONH2) are bonded, and one or more halogen groups are bonded; and a support for supporting the main catalyst, the cocatalyst and the aromatic compound. When olefins are polymerized by using the supported catalyst of the present invention, the catalyst exhibits excellent activity and fouling can be reduced by inhibiting the generation of polyolefin fine powder.

Description

technical field [0001] This specification requires the filing date of the patent application No. 10-2018-014022 filed with the Korean Patent Office on November 14, 2018 and the patent application No. 10-2019-0107227 filed with the Korean Patent Office on August 30, 2019 rights and interests, all of which are contained in this specification. The present invention relates to a supported catalyst for polymerizing olefins and a method for preparing polyolefins using it, in particular to a supported catalyst for polymerizing olefins and a method for preparing polyolefins using the same, the supported catalyst contains a main Catalysts, co-catalysts and aromatic compounds with specific substituents exhibit excellent catalyst activity and can prepare polyolefins without generating fine powder. Background technique [0002] In the process of polymerizing or copolymerizing olefin monomers to produce polyolefins, various catalyst compounds are used in order to achieve higher reaction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/659C08F4/6592C08F4/52C08F2/38
CPCC08F110/06C08F4/65916C08F2410/01C08F4/65912C08F4/65927C08F2/02C08F4/52C08F2/38
Inventor 闵浚根李海仁李来河申恩惠郑铢正蔡秉勳
Owner LOTTE CHEM CORP
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