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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

A technology for olefin polymerization and catalyst, which is applied to catalyst components for olefin polymerization and their preparation and application, catalyst system and application, and the fields of olefin polymerization, can solve problems such as 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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  • 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 catalyst component prepared by the existing catalyst component preparation method for olefin polymerization is used for catalyst system polymerization and has low catalytic activity, and a new catalyst component for olefin polymerization is provided. Method for preparing catalyst components

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

[0031] According to the preparation method of the catalyst component for olefin polymerization provided by the present invention, the method may comprise the following steps:

[0032] (1) carrying out the first contact reaction with magnesium halide and alcohol compound in the presence of hydrocarbon solvent to form a homogeneous solution;

[0033] (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;

[0034] (3) carrying out the third contact reaction with the mixture obtained in step (2) and the internal electron donor compound to obtain a suspension;

[0035] Wherein, the precipitation aid includes a precipitation aid a, a precipitation aid b and a precipitation aid c, and the precipitation aid a is a glycol ester compound shown in formula (I),

[0036]

[0037] In formula (I), R 1...

Embodiment 1

[0100] (1) Preparation of catalyst components

[0101] 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 3.0 hours, a stable and uniform alcoholate solution was obtained; 0.8mmol (0.4ml) of 3,5-heptanediol dibenzoate and 5.6mmol (1.5ml) of diisobutyl phthalate were added. ml), 2.2 mmol (0.75 ml) of tetrabutyl titanate, stirred for 60 minutes, and cooled to room temperature.

[0102] The alcoholate added with 0.8mmol (0.4ml) of 3,5-heptanediol dibenzoate, 5.6mmol of diisobutyl phthalate, and 2.2mmol (0.75ml) of tetrabutyl titanate was uniformly The solution was added to a reactor fully replaced by nitrogen and equipped with 1.0mol (110ml) titanium tetrachloride and 190mmol (20ml) toluene at -20°C, and they were fully contacted at -...

Embodiment 2

[0115] Add 0.8mmol (0.4ml) of 3,5-heptanediol dibenzoate to Example 1, 5.6mmol (1.5ml) of diisobutyl phthalate, 2.2mmol (0.75ml) of tetrabutyl titanate ) was changed to 2.6 mmol of 4-ethyl-3,5-heptanediol dibenzoate, 10.5 mmol of di-n-butyl phthalate, and 4.4 mmol of isopropyl titanate, and the rest were the same as in Example 1.

[0116] 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.

[0117] 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 Table 3.

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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, a separation assistant B and a separation assistant C; 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; the separation assistant C is a titanate compound; 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, 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 particle size. The precipitation aid gener...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/646C08F4/654
Inventor 严立安谭忠周奇龙徐秀东宋维玮尹珊珊于金华李凤奎
Owner CHINA PETROLEUM & CHEM CORP
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