Spherical magnesium halide adduct and preparation method and application thereof

A technology of adducts and magnesium halides, applied in the direction of magnesium organic compounds, etc.

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, the magnesium halide adduct prepared according to the method of this patent application has a large amount of irregular particles, such as needle-shaped particles and rod-shaped particles, and when the catalyst using the magnesium halide adduct as a carrier is used for olefin polymerization, it will undoubtedly cause The resulting polymer also has a large number of irregular particles

Method used

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  • Spherical magnesium halide adduct and preparation method and application thereof
  • Spherical magnesium halide adduct and preparation method and application thereof
  • Spherical magnesium halide adduct and preparation method and application thereof

Examples

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Embodiment approach

[0028] According to one embodiment of the present invention, the general formula of the magnesium halide adduct can be expressed as MgXY-mROH-nCH 3 OH-tDOE-qH 2 O, wherein, in MgXY, X is a halogen, Y can be a halogen, C 1 -C 14 Alkyl, C 1 -C 14 Alkoxyl, C 6 -C 14 Aryl or C 6 -C 14 The aryloxy group; in ROH, R can be C 2 -C 12 Alkyl, C 3 -C 10 Cycloalkyl or C 6 -C 10 Aryl group; m is 1-2.4, n is 0.1-1.0, t is 0.0001-0.1, q is 0-0.8; in the preferred case, in the above general formula of magnesium halide adduct, m is 1.5-2.2 , n is 0.3-0.8, t is 0.0002-0.01, q is 0-0.5.

[0029] In the present invention, in the general formula MgXY, both X and Y are halogen, or X is halogen, and Y can be C 1 -C 6 Alkyl, C 1 -C 6 Alkoxyl, C 6 -C 12 Aryl or C 6 -C 12 of aryloxy groups. The halogen is preferably chlorine or bromine. The C 1 -C 6 The alkyl group can be, for example, methyl, ethyl, propyl, isopropyl, butyl or isobutyl, and the C 1 -C 6 The alkoxy group can...

Embodiment 1

[0053] This example is used to illustrate the magnesium halide adduct provided by the present invention and its preparation method and application.

[0054] (1) Preparation of magnesium chloride adduct

[0055] In a 300L autoclave, add 90L of white oil, 90L of silicone oil, 9.0kg of magnesium chloride (94.7mol) and 14.5L of ethanol (249.0mol), raise the temperature to 125°C under stirring, and stir at 125°C for 2.5 hours, then, the resulting mixed liquid was passed through a high-gravity rotating bed into hexane pre-cooled to -30°C, the liquid was filtered off, washed five times with hexane, and then vacuum-dried at 40°C for 2 hours to obtain 18 kg of Solid material (i.e. alcoholate of magnesium chloride).

[0056] In a 1.6L reactor, add 900ml of hexane, add 90 grams of the solid matter prepared above, and then dissolve 45ml of dimethoxypropane solution (dimethoxypropane in 180ml of hexane) content of 0.37mol) was added therein, then, the temperature was raised to 60°C, and ...

Embodiment 2

[0063] This example is used to illustrate the magnesium halide adduct provided by the present invention and its preparation method and application.

[0064] The magnesium chloride adduct was prepared, the olefin polymerization catalyst was prepared, and the propylene polymerization was carried out according to the method of Example 1, except that the amount of hydrogen added during the propylene polymerization was 6.5 L.

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Abstract

The invention provides a spherical magnesium halide adduct and a preparation method and application thereof. The method comprises the following steps of: (1) mixing magnesium halide, alcohol except methanol, and an optional inert liquid medium, and heating the obtained mixture with stirring to form a magnesium halide adduct melt; (2) performing shear dispersion on the magnesium halide adduct melt, and adding into a cooling medium to form spherical solid particles; (3) performing contact reaction on the spherical solid particles and dimethoxy propane in an inert dispersion medium; and (4) performing contact reaction on a product obtained in the step (3) and a polyol ester compound in the inert dispersion medium. The magnesium halide adduct has a good particle shape, a smooth surface and high liquidity, and special-shaped particles do not exist; and a catalyst prepared by taking the magnesium halide adduct as a catalyst carrier has high hydrogen regulation sensitivity when used for olefin polymerization.

Description

technical field [0001] The invention relates to a magnesium halide adduct, a preparation method of the magnesium halide adduct, a magnesium halide adduct prepared by the method, and an application of the magnesium halide adduct as a catalyst carrier. Background technique [0002] The preparation of Ziegler-Natta catalysts by supporting titanium compounds and electron donor compounds on active magnesium halides is well known in the prior art. Usually, the active magnesium halide uses an adduct of magnesium halide and alcohol, which is used as a carrier to react with titanium halide and an electron donor compound to obtain a spherical catalyst. When the spherical catalyst is used for olefin polymerization (especially propylene polymerization), it has high polymerization activity and stereospecificity, and the obtained polymer has good particle shape. [0003] The disclosed adducts of magnesium halides and alcohols generally include binary components of magnesium chloride and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/02C08F4/02C08F10/00
Inventor 夏先知刘月祥赵瑾张纪贵凌永泰李威莅乔素珍谭扬彭人琪高平高富堂张志会
Owner CHINA PETROLEUM & CHEM CORP
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