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

A technology of olefin polymerization and catalyst, which is applied in the field of catalyst components for olefin polymerization and its preparation, catalyst system and application, and olefin polymerization. It can solve the problems of low catalytic activity and achieve high polymerization activity, high isotacticity, and high Yield effect

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 of low catalytic activity when the catalyst component is used for catalyst system polymerization prepared by the existing catalyst component preparation method for olefin polymerization, and to provide a new catalyst for olefin polymerization Method of preparation of components

Method used

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

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preparation example Construction

[0030] According to the preparation method of the catalyst component for olefin polymerization provided by the present invention, the method may comprise the following steps:

[0031] (1) carrying out the first contact reaction with magnesium halide and alcohol compound in the presence of hydrocarbon solvent to form a homogeneous solution;

[0032] (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;

[0033] (3) carrying out the third contact reaction with the mixture obtained in step (2) and the internal electron donor compound to obtain a suspension;

[0034] Wherein, described co-separation agent comprises co-separation agent a and co-separation agent b, and described co-separation agent a is the glycol ester compound shown in formula (I),

[0035]

[0036] In formula (I), R 1 -R ...

Embodiment 1

[0096] (1) Preparation of catalyst components

[0097] In the reaction kettle that has been repeatedly replaced by high-purity nitrogen, 52.5mmol of anhydrous magnesium chloride, 328mmol of toluene, and 140mmol of 2-ethylhexanol were sequentially added, and the reaction was carried out for 3.0 hours at a stirring speed of 450rpm and a temperature of 110°C to obtain a stable and uniform 3,5-Heptanediol dibenzoate 0.8mmol (0.4ml) and dibutyl phthalate 2.6mmol (0.7ml) were added, stirred for 60 minutes, and cooled to room temperature.

[0098] Add 0.8mmol (0.4ml) of 3,5-heptanediol dibenzoate and 2.6mmol (0.7ml) of dibutyl phthalate to the homogeneous solution of the alcoholate that has been fully replaced with nitrogen, and the In a reactor with 1mol of titanium tetrachloride and 190mmol of toluene at -20°C, they are fully contacted at -20°C by stirring. After 5 hours, the temperature is raised to 110°C. During the heating process, solid precipitates are precipitated, and o-benz...

Embodiment 2

[0109] Only change 3,5-heptanediol dibenzoate 0.8mmol (0.4ml) and dibutyl phthalate 2.6mmol (0.7ml) in Example 1 to 1.6mmol and 1.05mmol respectively, The olefin polymerization catalyst component and polymer were prepared according to the method of Example 1. Table 1 shows the results of the amount of titanium used in terms of titanium element, the amount of precipitation aid a and the particle size distribution of the catalyst component during the preparation of the catalyst component. The polymerization activity of the catalyst system containing the catalyst components in the polymerization of propylene and the performance parameters of the polymers are shown in Table 2.

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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 of a magnesium halide-alcohol adduct 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 compound undergo a contact reaction to produce a suspension liquid, wherein the separation assistants comprise a separation assistant A and a separation assistant B; the separation assistant A is a glycol ester compound shown in the formula (I); the separation assistant B is an alkyl ester of an aliphatic or aromatic carboxylic acid; and the separation assistant A is different from the separation assistant B. The invention also relates to the olefin polymerization catalyst ingredient for olefin polymerization, 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 basic components is generally prepared by dissolving magnesium chloride to prepare a uniform solution, and then crystallizing and loading 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/646C08F4/654
Inventor 严立安谭忠徐秀东周奇龙宋维玮李凤奎尹珊珊于金华
Owner CHINA PETROLEUM & CHEM CORP