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Preparation method of catalyst component for olefin polymerization and catalyst

An olefin polymerization and catalyst technology, which is applied to the preparation of catalyst components for olefin polymerization and the field of catalysts, can solve the problems of difficult adjustment of particle size, too many fine polymer powders, and difficult control of catalyst particle shape.

Active Publication Date: 2012-08-29
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 olefin polymerization and catalyst
  • Preparation method of catalyst component for olefin polymerization and catalyst
  • Preparation method of catalyst component for olefin polymerization and catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 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 1.5 hours, then added 1.9 mmoles of dibutyl phthalate, reacted for 1.0 hours, cooled to -28°C, added dropwise 0.51 moles of titanium tetrachloride, and then added 1.4 mmoles of 3,5 diluted with 0.1 moles of toluene Heptanediol dibenzoate and 4.4 mmol of diphenyldimethoxysilane continued to react for one hour, and the temperature was gradually raised to 85° C., during which solid particles were precipitated. Add 2.6 millimoles of dibutyl phthalate to 85°C, keep the temperature for one hour, filter off the mother liquor, wash and filter the liquid with inert diluent toluene several times, add 0.44 moles of titanium tetrachloride, 0.7 moles of toluene at 110°C Keep the temperature for 2 hours, filter and repeat the treatment twic...

Embodiment 2

[0053] 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 1.5 hours, then added 3.9 mmoles of dibutyl phthalate, reacted for 1.0 hours, cooled to -28°C, added dropwise 0.51 moles of titanium tetrachloride, and then added 1.4 mmoles of 3,5 diluted with 0.1 moles of toluene Heptanediol dibenzoate and 4.4 mmol of diphenyldimethoxysilane continued to react for one hour, and the temperature was gradually raised to 85° C., during which solid particles were precipitated. Keep the temperature at 85°C for one hour, filter the mother liquor, wash and filter the liquid with inert diluent toluene several times, add 0.44 moles of titanium tetrachloride and 0.7 moles of toluene, keep the temperature at 110°C for 1 hour, and repeat the treatment twice after filtration. Then, it was washed with hexa...

Embodiment 3

[0055] Same as in Example 1, only changing 4.4 mmoles of diphenyldimethoxysilane to 6.6 mmoles of diphenyldimethoxysilane.

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Abstract

The invention provides a preparation method of a catalyst component for olefin polymerization. In the preparation method of the catalyst component, a separation assistant component consists of polyol ester compounds expressed by a general formula (I) and organosilane compounds expressed by the general formula (II) of RIaRIIbSi (ORIII) c; and the separation process of catalyst particles is effectively controlled through combining action of the organosilane compounds and the polyol ester compounds. Compared with the traditional catalyst, the catalyst has greatly improved activity and yield and has little polymer fine powder.

Description

technical field [0001] The present invention relates to a preparation method of a catalyst component for olefin polymerization and its catalyst, more specifically to a preparation of a solid particle type catalyst component for olefin reaction with magnesium, titanium and halogen as basic components 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 dissolution and elution system, only with the presence of a precipitation aid can it be possible to obtain solids with uniform particle size. The precipitation aid generally uses organic acid anhydrides, organic acids, ketones, ethers, esters and other compounds. [0003] In CN85100997A, the titanium-containing catalyst component is a homo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/645C08F4/658C08F4/649
Inventor 谭忠严立安徐秀东宋维玮李凤奎尹姗姗于金华周奇龙
Owner CHINA PETROLEUM & CHEM CORP
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