Olefin polymerization catalyst ingredient, preparation method and use of the olefin polymerization catalyst ingredient, catalyst system, use of the catalyst system, and olefin polymerization method

A technology of olefin polymerization and catalyst, applied in the field of catalyst components for olefin polymerization and its preparation and application, catalyst system and application, and olefin polymerization, which can solve the problems of low catalytic activity and achieve high polymerization activity and high yield , the effect of excellent dynamic performance

Active Publication Date: 2013-04-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first object of the present invention is to overcome the defect that the catalytic activity of the catalyst component prepared by the existing catalyst component preparation method for olefin polymer

Method used

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  • Olefin polymerization catalyst ingredient, preparation method and use of the olefin polymerization catalyst ingredient, catalyst system, use of the catalyst system, and olefin polymerization method
  • Olefin polymerization catalyst ingredient, preparation method and use of the olefin polymerization catalyst ingredient, catalyst system, use of the catalyst system, and olefin polymerization method
  • Olefin polymerization catalyst ingredient, preparation method and use of the olefin polymerization catalyst ingredient, catalyst system, use of the catalyst system, and olefin polymerization method

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preparation example Construction

[0035] According to the preparation method of the catalyst component for olefin polymerization provided by the present invention, the method may comprise the following steps:

[0036] (1) carrying out the first contact reaction with magnesium halide and alcohol compound in the presence of hydrocarbon solvent to form a homogeneous solution;

[0037] (2) In the presence of a precipitation aid, the homogeneous solution obtained in step (1) is subjected to a second contact reaction with a titanium compound to precipitate a solid precipitate to obtain a mixture containing a solid precipitate;

[0038] (3) carrying out the third contact reaction with the mixture obtained in step (2) and the internal electron donor compound to obtain a suspension;

[0039] Wherein, the precipitation aid includes a precipitation aid a, a precipitation aid b, a precipitation aid c and a precipitation aid d, and the precipitation aid a is a glycol ester compound shown in formula (I),

[0040]

[004...

Embodiment 1

[0109] (1) Preparation of catalyst components

[0110] In the reaction kettle that has been repeatedly replaced by high-purity nitrogen, 52.5mmol (5.0g) of anhydrous magnesium chloride, 328mmol (35ml) of toluene, and 140mmol (22ml) of 2-ethylhexanol were added in sequence, at a stirring speed of 450rpm and a temperature of 110°C Under the conditions of the reaction for 3.0 hours, a stable and uniform alcoholate solution was obtained; then 0.8mmol (0.4ml) of 3,5-heptanediol dibenzoate was added, and 2-isopropyl-2-(3-methyl butyl)-1,3-dimethoxypropane 0.6mmol (0.3ml), diisobutyl phthalate 5.6mmol (1.5ml), tetrabutyl titanate 2.2mmol (0.75ml), stirred for 60 minutes, cool to room temperature.

[0111] Add the above-mentioned 3,5-heptanediol dibenzoate 0.8mmol (0.4ml), 2-isopropyl-2-(3-methylbutyl)-1,3-dimethoxypropane 0.6 mmol (0.3ml), diisobutyl phthalate 5.6mmol (1.5ml), tetrabutyl titanate 2.2mmol (0.75ml) homogeneous alcoholate solution was added to the fully replaced nitro...

Embodiment 2

[0123] Add 0.8mmol (0.4ml) of 3,5-heptanediol dibenzoate to Example 1, 2-isopropyl-2-(3-methylbutyl)-1,3-dimethoxy Propane 0.6mmol (0.3ml), diisobutyl phthalate 5.6mmol (1.5ml), tetrabutyl titanate 2.2mmol (0.75ml), add 4-ethyl-3,5-heptanediol instead Dibenzoate 2.6mmol, 2-isopropyl-2-(3-methylbutyl)-1,3-dimethoxypropane 6mmol, di-n-butyl phthalate 10.5mmol, iso-titanate Propyl ester 4.4mmol, all the other are with embodiment 1. The results of the titanium content of the catalyst component, the content of the precipitation aid a and the particle size distribution of the catalyst component are shown in Table 1.

[0124] Catalyst Components The polymerization activity of the prepared catalyst system in propylene polymerization and the performance parameters of the propylene polymer are shown in Table 2. Catalyst Components The polymerization activity of the catalyst system prepared in the butene polymerization and the performance parameters of the butene polymer are shown in T...

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Abstract

The invention relates to a preparation method of an olefin polymerization catalyst ingredient. The preparation method comprises the following steps that 1, a uniform solution is prepared; 2, the uniform solution obtained by the step 1 and a titanium compound undergo a contact reaction in the presence of separation assistants to produce a mixture; and 3, the mixture obtained by the step 2 and an internal donor undergo a contact reaction, wherein the separation assistants comprise a separation assistant A, a separation assistant B, a separation assistant C and a separation assistant D; the separation assistant A is a glycol ester compound shown in the formula (I); the separation assistant B is an alkyl ester of a carboxylic acid; the separation assistant C is a titanate compound; the separation assistant D is a 1,3-diether compound shown in the formula (II); and the separation assistant A is different from the separation assistant B. The invention also relates to the olefin polymerization catalyst ingredient, a use of the olefin polymerization catalyst ingredient, a catalyst system, a use of the catalyst system, and an olefin polymerization method. Catalyst particles prepared from the olefin polymerization catalyst ingredient have good particle morphology and have a high polymerization activity and good dynamic performances in propylene polymerization.

Description

technical field [0001] The present invention relates to a method for preparing a catalyst component for olefin polymerization, the catalyst component for olefin polymerization prepared by the method, the catalyst component for olefin polymerization in a catalyst system for olefin polymerization The application of the catalyst system for olefin polymerization containing the above catalyst components, the application of the catalyst system for olefin polymerization in olefin polymerization reaction and the olefin polymerization method. Background technique [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 p...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/658C08F4/654C08F4/653C08F4/651C08F4/649C08F4/645
Inventor 严立安谭忠徐秀东周奇龙宋维玮于金华李凤奎尹珊珊
Owner CHINA PETROLEUM & CHEM CORP
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