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Catalyst component and its preparation method and application and catalyst system for olefin polymerization and its application and olefin polymerization method

An olefin polymerization and catalyst technology, applied in the application field of the catalyst system, can solve the problems of low polymerization activity, poor hydrogen adjustment sensitivity, and the catalyst needs to be further improved, and achieves simple equipment, convenient and easy conversion to production, and improved hydrogen adjustment sensitivity. sexual effect

Active Publication Date: 2019-03-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] CN1169840C and CN1286863C disclose a kind of " magnesium chloride-alcohol-phthalate " spherical magnesium chloride adduct, but, the catalyst that forms with this adduct and titanium tetrachloride reaction is low in the polymerization activity when being used for propylene polymerization And the sensitivity of hydrogen adjustment is poor
[0015] CN102796127A discloses a kind of formula is MgXY-mEtOH-n (LB 1 )-k(LB 2 )-p(LB 3 ), wherein X is chlorine or bromine, and Y is chlorine, bromine, C 1 -C 14 Straight chain or branched chain alkyl, C 6 -C 14 Substituted or unsubstituted aryl, C 1 -C 14 straight-chain or branched-chain alkoxy and C 6 -C 14 One of the substituted or unsubstituted aryloxy groups, LB 1 , LB 2 and LB 3 Each is one of carboxylic acid, aldehyde, ether, ester, ketone, silane, amine, nitrile, phenol and alcohol other than ethanol, m is 1-5, n is 0.005-2, k is 0.0005-0.3, p is 0.0005-0.3, the catalyst further prepared by reacting the adduct with titanium halide and an optional internal electron donor can obtain a better balance between hydrogen tuning ability and stereospecific ability, but the polymerization activity of the catalyst still needs to be further improved

Method used

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  • Catalyst component and its preparation method and application and catalyst system for olefin polymerization and its application and olefin polymerization method
  • Catalyst component and its preparation method and application and catalyst system for olefin polymerization and its application and olefin polymerization method
  • Catalyst component and its preparation method and application and catalyst system for olefin polymerization and its application and olefin polymerization method

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preparation example Construction

[0063] As mentioned above, the present invention provides a method for preparing a catalyst component for olefin polymerization, the method comprising: carrying out a contact reaction of a magnesium halide adduct, a titanium compound and an aromatic carboxylate compound, the halogenated The preparation step of magnesium adduct comprises:

[0064] (1) the aqueous MgX 1 Y and R 1 OH and an alkoxybenzoyl compound are mixed, and the resulting mixture is heated to obtain a liquid magnesium halide adduct; or

[0065] Anhydrous MgX 1 Y and R 1 OH, an alkoxybenzoyl compound and water are mixed, and the obtained mixture is heated to obtain a liquid magnesium halide adduct;

[0066] (2) In the presence of an inert liquid medium, pass the liquid magnesium halide adduct through the structural unit with holes under pressure to the liquid cooling medium for rapid cooling and drying to obtain spherical magnesium halide adduct particles.

[0067] According to the method of the present in...

Embodiment approach

[0092] According to a preferred embodiment of the present invention, the structural unit with holes is a mesh layer.

[0093] According to a preferred embodiment of the present invention, the mesh layer is a metal mesh layer.

[0094] According to the method of the present invention, the adduct solid particles with equivalent particle morphology can be obtained by adopting the metal mesh with multi-layer large-aperture structure and the metal mesh with relatively small number of layers with small-aperture structure. When preparing a small particle size (such as less than 30 μm) adduct carrier, it is preferable to use a metal mesh structure with 1-20 layers of small pore structure (such as a pore size of 30-50 μm). It is preferred to use a metal mesh structure with 1-20 layers of relatively large aperture (eg, 65-200 μm aperture) structure.

[0095] According to a preferred embodiment of the present invention, the mesh layer includes 1-20 layers, preferably 2-8 layers, more pr...

preparation Embodiment 1

[0147] In a 1000mL reaction kettle, add 150mL of white oil (commercially purchased from Guangzhou Mingen Petrochemical Co., Ltd., with a water content of less than 50ppm by weight), 300mL of methyl silicone oil (commercially purchased from Dow Corning, with a viscosity of 300 centipoise / 20°C, by weight, the water content is less than 50ppm), 30g magnesium chloride containing 0.44wt% moisture (commercially purchased from Fushun Xinyi Titanium Factory), 50mL absolute ethanol (commercially purchased from Beijing Chemical Plant, by weight , the water content is less than 100 ppm) and 1 mL of 2-methoxybenzoyl chloride (commercially purchased from TOKYO KASEI KOGYO CO.LTD), and the temperature was raised to 125° C. under stirring. After 3 hours of constant temperature reaction, the mixture was pressed into 2L of hexane pre-cooled to -30°C (with By weight, the water content is lower than 5ppm), and quenched and formed. The liquid was removed by filtration, and the obtained solid wa...

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Abstract

The invention relates to the field of olefin polymerization, and specifically provides a catalyst component used for olefin polymerization and a preparation method and application thereof. The preparation method comprises a step of subjecting a magnesium halide adduct, a titanium compound and an aromatic carboxylate compound to a contact reaction. The magnesium halide adduct is prepared through the following steps: (1) mixing aquo MgX1Y, R1OH and an alkoxy benzoyl compound and heating the obtained mixture so as to obtain a liquid magnesium halide adduct, or mixing anhydrous MgX1Y, R1OH, the alkoxy benzoyl compound and water and heating the obtained mixture so as to obtain the liquid magnesium halide adduct; and (2) allowing the liquid magnesium halide adduct to penetrate through a structural unit with holes to a liquid cooling medium under the action of pressure in the presence of an inert liquid medium, and carrying out quenching formation and drying. The invention provides a catalyst system used for olefin polymerization and application thereof, and an olefin polymerization method. The catalyst component synthesized from an adduct carrier prepared by using the method has improved hydrogen sensitivity when used for olefin polymerization.

Description

technical field [0001] The present invention relates to a method for preparing a catalyst component for olefin polymerization, and the catalyst component for olefin polymerization obtained by the method and its application in the preparation of a catalyst system for olefin polymerization; and for olefin A catalyst for polymerization and its use in olefin polymerization; and an olefin polymerization method using the catalyst for olefin polymerization of the present invention. technical background [0002] It is known in the prior art to support titanium compounds and electron donor compounds on active magnesium halides to prepare Ziegler-Natta catalysts. Among them, the active magnesium halide often uses the adduct of magnesium halide and alcohol, which is used as a carrier to react with titanium halide and electron donor compound to obtain a spherical catalyst. The spherical catalyst is used in olefins (especially propylene) During polymerization, it has higher polymerizati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F10/06C08F4/02C08F4/649C08F4/651C08F4/654
Inventor 夏先知张纪贵刘月祥高富堂李威莅彭人琪凌永泰赵瑾任春红谭扬张天一张志会段瑞林万真马长友
Owner CHINA PETROLEUM & CHEM CORP
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