Catalyst component and catalyst system for olefin polymerization, application of catalyst component and catalyst system, and olefin polymerization method

An olefin polymerization and catalyst technology, which is applied to catalyst components and catalyst systems for olefin polymerization and its application and the field of olefin polymerization, can solve problems such as mutual adhesion of carrier particles, and achieve good particle shape, good shape and high stereo-orientation. effect of ability

Active Publication Date: 2012-11-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of the carrier, the cooling efficiency of the magnesium halide adduct must be carefully controlled during rapid cooling, otherwise it is easy to cause the mutual adhesion of the carrier particles; and the hydrogen adjustment sensitivity and stereospecificity of the catalyst prepared by the adduct carrier The balance between abilities needs to be further improved

Method used

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  • Catalyst component and catalyst system for olefin polymerization, application of catalyst component and catalyst system, and olefin polymerization method
  • Catalyst component and catalyst system for olefin polymerization, application of catalyst component and catalyst system, and olefin polymerization method
  • Catalyst component and catalyst system for olefin polymerization, application of catalyst component and catalyst system, and olefin polymerization method

Examples

Experimental program
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preparation example Construction

[0076] According to the preparation method of magnesium halide adduct of the present invention, MgX 1 Y, LB 1 , LB 2 And LB 3 It is the same as the previous definition, so I won't repeat it here.

[0077] According to the preparation method of magnesium halide adduct of the present invention, MgX 1 Y, ethanol, LB 1 , LB 2 And LB 3 The dosage can be appropriately selected according to the expected composition of the magnesium halide adduct, as long as MgX 1 Y, ethanol, LB 1 , LB 2 And LB 3 The dosage can make the composition of the final magnesium halide adduct meet the requirements. Generally speaking, relative to 1 mole of MgX 1 Y, the amount of ethanol can be 1-5.5 moles, LB 1 The amount can be 0.005-2.3 moles, LB 2 The amount can be 0.0005 to 0.32 moles, LB 3 The amount of MgX can be 0.0005 to 0.32 moles; preferably, relative to 1 mole of MgX 1 Y, the amount of ethanol is 2-3.7 moles, LB 1 The amount is 0.01-0.85 mole, LB 2 The amount is 0.001-0.12 mole, LB 3 The amount is 0.001...

Embodiment 1

[0174] This example is used to illustrate the catalyst component and catalyst system for olefin polymerization and its application and olefin polymerization method according to the present invention.

[0175] (1) Preparation of magnesium halide adduct

[0176] In a 500mL reactor, add 150mL white oil, 30g anhydrous magnesium chloride (commercially purchased from Fushun Xinyi Titanium Factory), 50mL of absolute ethanol (commercially purchased from Beijing Chemical Plant, analytically pure), 4mL 2,2-two Methoxypropane (commercially available from Ningbo Warner Chemical Co., Ltd.) and 1 mL of 2-methoxybenzoyl chloride (commercially available from TOKYO KASEI KOGYO CO.LTD) were heated to 120°C under stirring. After a constant temperature reaction for 2 hours, the mixture was pressed into 300 mL of methyl silicone oil (commercially available from Dow Corning, viscosity of 300 cps / 20°C) preheated to 120°C, and stirred at a speed of 1600 rpm for 30 minutes. emulsification. Then, the emul...

Embodiment 2

[0184] This example is used to illustrate the catalyst component and catalyst system for olefin polymerization and its application and olefin polymerization method according to the present invention.

[0185] (1) Preparation of magnesium halide adduct

[0186] The spherical magnesium halide adduct was prepared by the same method as in Example 1, except that the amount of 2,2-dimethoxypropane was 9 mL. The composition of the magnesium halide adduct is shown in Table 1, and the particle morphology observed by an optical microscope is as image 3 Shown.

[0187] (2) Preparation of catalyst components

[0188] The spherical catalyst component was prepared by the same method as in Example 1, except that the magnesium halide adduct was the magnesium halide adduct prepared in step (1) of Example 2. The content of titanium in the spherical catalyst component is 2.1wt%, and the particle morphology observed with an optical microscope is as Figure 4 Shown.

[0189] (3) Propylene polymerization ...

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Abstract

The invention provides a catalyst component for olefin polymerization and application of the catalyst component. The catalyst component contains a product obtained by reacting a magnesium halide adduct, a titanium compound and at least one optional internal electron donor compound, wherein the magnesium halide adduct is shown as MgX<1>Y-mEtOH-n(LB1)-k(LB2)-p(LB3). The invention also provides a catalyst system for olefin polymerization and application of the catalyst system. The catalyst system contains the catalyst component and one or more organic aluminum compounds. The invention also provides an olefin polymerization method. The method comprises the following step of: contacting one or more olefins and the catalyst system under the condition of olefin polymerization. The catalyst system has high hydrogen regulation sensitivity and stereospecificity in olefin polymerization, and good balance between the hydrogen regulation sensitivity and the stereospecificity of the catalyst system is achieved.

Description

Technical field [0001] The invention relates to a catalyst component and a catalyst system for olefin polymerization, its application and an olefin polymerization method. Background technique [0002] The preparation of Ziegler-Natta catalysts by supporting titanium compounds and electron donor compounds on active magnesium halide is well known in the prior art. Among them, the active magnesium halide often adopts 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 for olefins (especially propylene). During polymerization, it has higher polymerization activity and stereospecific ability, and the obtained polymer also has better particle morphology and higher apparent density. [0003] Most of the published magnesium halide·alcohol adducts are alcoholates of magnesium chloride, usually containing magnesium chloride and alcohol as a binary compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/646C08F4/649C08F4/02C08F110/06
Inventor 张纪贵夏先知刘月祥赵瑾高平李威莅谭扬彭人琪乔素珍张志会段瑞林
Owner CHINA PETROLEUM & CHEM CORP
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