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Catalyst solid component for olefin polymerization and preparation method thereof

A technology for polymerizing solid components and olefins, which is applied in the field of preparation of solid components of olefin polymerization catalysts, and can solve the problems of environmental hazards, complex preparation processes, and low sensitivity to hydrogen adjustment of catalysts.

Active Publication Date: 2011-10-12
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the hydrogen adjustment sensitivity of the catalyst prepared by alkoxymagnesium is low
[0009] Although the above-mentioned documents disclose some non-aromatic ester compounds, the preparation process is very complicated, and the aromatic solvent of benzene is used, which is harmful to the environment and the yield is low

Method used

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  • Catalyst solid component for olefin polymerization and preparation method thereof
  • Catalyst solid component for olefin polymerization and preparation method thereof
  • Catalyst solid component for olefin polymerization and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Add 5g of anhydrous magnesium chloride, 23mL of isooctyl alcohol, 1mL of dimethyl 1-cyclohexene-1,2-dicarboxylate, tetrabutyl titanate and 30mL of dry decane compound into the reaction flask, titanium The molar weights of tetrabutyl ester and di-n-butyl 1-cyclohexene-1,2-dicarboxylate are equal, and they are reacted at 130°C for 4 hours under the protection of nitrogen to fully dissolve anhydrous magnesium chloride and obtain a stable and uniform alcohol compound. solution, and the reaction system was slowly lowered to room temperature.

[0045] (2) Add the homogeneous solution prepared above dropwise to a reactor fully replaced by nitrogen and equipped with 200ml titanium tetrachloride at -20°C within 1 hour. 1ml of di-n-butyl 1-cyclohexene-1,2-dicarboxylate, continue to heat up for 30min until the temperature reaches 110°C, add 1.5ml of di-n-butyl 1-cyclohexene-1,2-dicarboxylate, at this temperature The reaction was carried out for 2 hours. After the reaction wa...

Embodiment 2

[0052] 1-cyclohexene-1,2-dicarboxylic acid di-n-butyl is replaced by 1-cyclohexene-1,2-dicarboxylic acid diisobutyl ester, and others are the same as in Example 1. Catalyst composition analysis results:

[0053] Titanium content: 2.15% (wt)

[0054] Magnesium content: 16.4% (wt)

[0055] Ester content: 8.2% (wt)

[0056] Polymerization result: catalytic activity 47,600gPP / gCat, polymer apparent density 0.46g / cm 3 , The isotacticity is 97.3%.

Embodiment 3

[0058] 1-cyclohexene-1,2-dicarboxylic acid di-n-butyl ester was replaced by cyclohexane-1,2-dicarboxylic acid di-n-butyl ester (equal ratio mixture of cis and trans isomers), and the others were the same as in Example 1. Catalyst composition analysis results:

[0059] Titanium content: 2.25% (wt)

[0060] Magnesium content: 16.6% (wt)

[0061] Ester content: 8.1% (wt)

[0062] Polymerization result: catalytic activity 45,400gPP / gCat, polymer apparent density 0.46g / cm 3 , The isotacticity is 97.3%.

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Abstract

The invention discloses a catalyst solid component for olefin polymerization. A preparation method of the catalyst solid component comprises the following steps of: fully reacting anhydrous magnesium halide, an alcohol compound, titanate and a lipid compound (an internal electron donor) which is shown as picture 1 in an alkane solvent to obtain stable and uniform alcohol compound solution; contacting and reacting the prepared alcohol compound solution and titanium halide; further adding the lipid compound shown as picture 1; and after filtering and washing, obtaining the catalyst solid component. The catalyst solid component is combined with aluminum alkyl and a silane compound to form a catalyst, which can be applied to olefin polymerization.

Description

technical field [0001] The invention relates to a method for preparing a solid component of an olefin polymerization catalyst, in particular to a method containing 1,2-cyclohexanedicarboxylic acid diester compound or 1-cyclohexene-1,2-dicarboxylic acid diester compound The preparation method of the catalyst component. Background technique [0002] Since the advent of Ziegler-Natta catalysts, the preparation methods and related technologies for olefin polymerization catalysts have made great progress. Some olefin polymerization catalysts have been successfully industrialized and applied to various polymerization processes. Most of the Ziegler-Natta catalyst components used in conventional polymerization contact magnesium compounds, titanium compounds, halides and electron donors to form olefin polymerization catalysts. Usually, the electron donor added in the catalyst preparation process is an internal electron donor, such as Chinese patents CN 85100997A and CN 1172966C. In...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/646C08F4/654
Inventor 李化毅李倩胡友良
Owner INST OF CHEM CHINESE ACAD OF SCI
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