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Adduct of round magnesium halides, preparation method and application

A magnesium halide and adduct technology, applied in the application field of preparing olefin polymerization catalysts, can solve the problems of unsatisfactory, sticky, difficult to form spherical particles with particle size, etc., to achieve uniform particle size, easy control, particle size The effect of narrow size distribution, high catalytic activity and stereoregularity

Active Publication Date: 2007-05-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the composite spherical carrier is easily sticky during the preparation process, it is difficult to form spherical particles with a suitable particle size. The size of the disclosed spherical carrier is D50: 70-200, and its catalytic activity for propylene polymerization is only 406gPP / gcat, so not yet satisfactory

Method used

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  • Adduct of round magnesium halides, preparation method and application
  • Adduct of round magnesium halides, preparation method and application
  • Adduct of round magnesium halides, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In a 1L autoclave, add 9ml of white oil, 180ml of silicone oil, 15g of magnesium chloride, 28ml of ethanol and 5ml of 2,4-pentanediol dibenzoate, heat up to 125°C under stirring, and stir at 125°C for 3 After 1 hour, the mixture was put into 3 L of hexane pre-cooled to -30°C, the liquid was filtered off, the solid was washed three times with hexane, and dried in vacuo to obtain 31 g of spherical magnesium chloride adduct.

[0042] The test results are shown in Table 1.

Embodiment 2

[0044] Same as Example 1 except 10ml of 2,4-pentanediol dibenzoate. The test results are shown in Table 1.

Embodiment 3

[0046] Same as Example 1 except 15ml of 2,4-pentanediol dibenzoate. The test results are shown in Table 1.

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PUM

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Abstract

This invention provides a magnesium halide adduct, whose chemical formula is MgX2-mROH-nE, where X is Cl or Br; R is C1-C12 alkyl, C3-C10 cycloalkyl or C6-C10 aryl; m is 1-5; n is 0.005-0.5; E is diol ester compound shown in formula I. The particle sizes of the magnesium halide adduct are easy to control, and the particle size distribution is narrow. The catalyst using the magnesium halide adduct as the carrier has a uniform active center distribution. When the catalyst is used for propylene polymerization, the fine powder of the polymer is obvious reduced. The catalyst shows high catalytic activity and steric regularity.

Description

technical field [0001] The invention relates to a magnesium halide adduct, a preparation method and application thereof. More specifically, it relates to a spherical adduct of magnesium halide, alcohol and ester ternary components, and the application of the adduct in the preparation of olefin polymerization catalysts. technical background [0002] Magnesium halide / alcohol adducts and their use as supports in the preparation of olefin polymerization catalysts are well known in the art. The adduct reacts with titanium halide and electron donor compound to obtain a spherical catalyst, which has high polymerization activity and stereoregularity when used in olefin polymerization, especially propylene polymerization, and the obtained polymer also has good particles morphology and higher apparent density. [0003] Most of the disclosed magnesium halide adducts are alcoholates of magnesium chloride, usually including binary components of magnesium chloride and alcohol. Some of ...

Claims

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Application Information

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IPC IPC(8): C08F4/02C08F4/72C08F10/00C08F10/06
Inventor 刘月祥高明智王新生张天一夏先知谭忠范桂荣乔素珍高平刘海涛郭正阳马晶彭人琪
Owner CHINA PETROLEUM & CHEM CORP
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