Preparation method of catalyst component for polymerization reaction of olefins and catalyst thereof

A technology for olefin polymerization and catalysts, which is applied in the preparation method of catalyst components and the field of catalysts. It can solve the problems of many polymer fine powders, difficult adjustment of particle size, and difficult control of catalyst particle shape, so as to achieve less fine powder content, Excellent stereospecificity, the effect of reducing the amount of addition

Active Publication Date: 2010-10-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shape of catalyst particles prepared by this method is difficult to control, the particle size is not easy to adjust, and there are more fine polymer powders, so it is mostly suitable for ethylene polymerization processes that do not have strict requirements on fine powder.

Method used

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  • Preparation method of catalyst component for polymerization reaction of olefins and catalyst thereof
  • Preparation method of catalyst component for polymerization reaction of olefins and catalyst thereof
  • Preparation method of catalyst component for polymerization reaction of olefins and catalyst thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In the reaction kettle that has been repeatedly replaced by high-purity nitrogen, add 0.05 moles of anhydrous magnesium chloride, 0.75 moles of toluene, 0.1 moles of epichlorohydrin, and 0.033 moles of tributyl phosphate in sequence. , reacted for 2 hours, lowered the temperature to -28°C, added 0.51 moles of titanium tetrachloride dropwise, then added 2.0 mmoles of 4-ethyl-3,5 heptanediol dibenzoate diluted with 0.1 moles of toluene, and continued the reaction for a Hours, the temperature was gradually raised to 85°C, and solid particles were precipitated during the heating process. Add 4.0 mmoles of dibutyl phthalate to 85°C, keep the temperature for one hour, filter the mother liquor, wash and filter the liquid with inert diluent toluene several times, then add 0.44 moles of titanium tetrachloride and 0.7 moles of toluene at 110°C Keep the temperature for 2 hours, filter and repeat the treatment twice, then wash with hexane for 5 times, and vacuum dry the remaining s...

Embodiment 2

[0048] Same as Example 1, only 2.0 mmoles of 4-ethyl-3,5-heptanediol dibenzoate diluted with 0.1 moles of toluene was added, and 2.0 mmoles of 4-ethyl-3 dibenzoate diluted with 0.2 moles of toluene was added instead , 5 Heptanediol Dibenzoate.

Embodiment 3

[0050] Same as Example 1, only 2.0 mmoles of 4-ethyl-3,5-heptanediol dibenzoate diluted with 0.1 moles of toluene was added, and 1.6 mmoles of 4-ethyl-3 dibenzoate diluted with 0.1 moles of toluene was added instead , 5 Heptanediol Dibenzoate.

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Abstract

The invention provides a method for preparing a catalyst component for the polymerization reaction of olefins, which comprises the following steps: (1) dissolving magnesium halide in a solvent system comprised of an organic epoxy compound, an organic phosphorus compound and an inert diluent to form uniform solution; (2) mixing a titanium compound with the uniform solution formed by the step (1) and adding a precipitant to form a mixture, or adding the precipitant into the uniform solution formed by the step (1) first and mixing the uniform solution with the titanium compound to form a mixture; and (3) heating the mixture obtained by the step (2), adding any selected electronic donor compound during heating or after heating, and washing the resulting product with an inert diluent to obtain a magnesium / titanium-containing solid material, wherein the precipitant is a glycol ester compound. The catalyst component has high polymerization activity and stereoselectivity and causes little polymer fine powder when used in the polymerization reaction of olefins.

Description

technical field [0001] The present invention relates to a kind of preparation method of the catalyst component that is used for olefin polymerization reaction and its catalyst, more specifically relate to a kind of solid particle type catalyst component that is used for olefin reaction with magnesium, titanium, halogen as basic components Preparation method and its catalyst. technical background [0002] The solid particle type polyolefin catalyst with magnesium, titanium, halogen and electron donor as the basic components is firstly prepared into a uniform solution of magnesium chloride, and then precipitated by crystallization and loaded with titanium-containing active components. In the process of dissolution and separation, it is usually possible to obtain solids with uniform particle size only in the presence of a precipitation aid. Generally, organic acid anhydrides, organic acids, ketones, ethers and other compounds are used as precipitation aids. [0003] A kind of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/649C08F10/00
Inventor 谭忠严立安徐秀东宋维玮李凤奎尹珊珊于金华周奇龙
Owner CHINA PETROLEUM & CHEM CORP
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