Catalyst component for olefin polymerization and catalyst

A technology for olefin polymerization and catalyst, which is applied in the production of bulk chemicals, etc., and can solve the problems of low catalytic activity, low catalytic activity, and reduced catalytic activity.

Active Publication Date: 2011-08-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In industrial applications, these internal electron donors have certain defects in practical applications: the catalytic activity of catalysts using aromatic diester compounds is low, and the relative molecular mass distribution of the obtained polymers is moderate; the Chinese patent The catalyst of the diol ester compound used in CN1453298 is not as sensitive to hydrogen adjustment as the catalyst using diether compounds, and the relative molecular mass distribution of the resulting polymer is generally not as good as using 2,3-dihydrocarbyl succinate compounds. Evaluation results: Although the catalyst using diether compounds has high catalytic activity and good hydrogen modulation sensitivity, the relative molecular mass distribution of the obtained polymer is narrow; The mass distribution is wide, but there are problems such as the difficulty in the synthesis process of internal electron donor compounds in industrial applications; in the patent CN1242780A, C with ω-cyano group is used 2 ~C 5 Monobasic acid ester compounds are catal

Method used

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  • Catalyst component for olefin polymerization and catalyst
  • Catalyst component for olefin polymerization and catalyst
  • Catalyst component for olefin polymerization and catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Preparation of spherical catalyst solid components

[0062] Prepare spherical magnesium chloride alcoholate MgX with reference to the embodiment 1 method in Chinese patent CN1091748A 2 ·(ROH) m , where X=Cl, R=C 2 h 5 , m=2.4.

[0063] In a 300ml double-layer glass reaction bottle, add 100ml of titanium tetrachloride, cool to -20°C, add 8 grams of the above-mentioned spherical magnesium chloride alcoholate, heat up to 100°C, and add according to the Chinese invention patent application number during the heating process. 2.5mmol of 2,3-diisopropyl-2-cyanodiethyl succinate prepared by the method described in the patent application description of 200910077779.6, 2.5mmol of diisobutyl phthalate, filter off the liquid, and use four Titanium chloride was washed twice, washed four times with hexane, and vacuum-dried to obtain a spherical catalyst solid component. Infrared spectrogram data of catalyst solid components:

[0064] IR (cm -1 ): 2291, 1701, 1459, 1378, 12...

Embodiment 2

[0069] (1) preparation of spherical catalyst solid component, with embodiment 1.

[0070] (2) Propylene polymerization

[0071] In a 5L autoclave, 5ml of a hexane solution of triethylaluminum (the concentration of triethylaluminum is 0.5mmol / ml), 1.25ml of cyclohexylmethyldimethoxysilane (CHMMS ) in hexane solution (the concentration of CHMMS is 0.1 mmol / ml), 10 ml of anhydrous hexane and 10 mg of the solid catalyst component obtained above. Close the autoclave, introduce 6 L of hydrogen gas (standard volume) and 2.3 L of liquid propylene, raise the temperature to 70° C., and polymerize for 1 hour. The test results are shown in Table 1.

Embodiment 3

[0073] (1) The preparation of the solid component of the spherical catalyst is the same as in Example 1, except that diisobutyl phthalate is replaced by 9,9-di(methoxymethyl)fluorene (2.5 mmol).

[0074] Infrared spectrogram data of catalyst solid components:

[0075] IR (cm -1 ): 2286, 1697, 1637, 1460, 1377, 1294, 1009, etc.

[0076] The wavelength dispersive X-ray fluorescence spectrometry (WDXRF) analysis results of the solid components of the catalyst: Mg 21.8%, Cl 74.8%, Ti 3.0%, and the balance is other elements.

[0077] (2) The propylene polymerization method is the same as that of Example 1, and the test results are shown in Table 1.

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Abstract

The invention relates to a catalyst component for olefin polymerization, a catalyst and application of the catalyst in olefin homopolymerization and polymerization. By using a composite internal electronic donor compound which contains an alpha-cyanosuccinate compound A and a single-functional group or double-functional group compound B which is selected from ester, ether, ketone and ketal exceptfor the compound A as the catalyst of internal electronic donor synthesis, the catalyst has the characteristics of high catalytic activity, high hydrogen adjusting sensitivity, high isotactic index of polymerized products, wide molecular weight distribution and high weight-average molecular weight when being used for propylene polymerization. The favorable performance of the catalyst is beneficial to the preparation of polypropylene and the brand development of products.

Description

technical field [0001] The present invention relates to a catalyst component and catalyst for olefin polymerization, and its application in olefin homopolymerization and copolymerization. Background technique [0002] It is well known in the art that halides, oxyhalides, acetylacetonates, etc. of transition metals and organometallic compounds containing elements from Groups IA to IIIA of the periodic system are the basic constituents of Ziegler-Natta catalysts. The former is often called the main catalyst, and the commonly used transition metal compounds are titanium and vanadium. The latter are often referred to as cocatalysts and are mainly aluminum alkyls or halides of aluminum alkyls. In some cases, especially when it is used in the catalysis of propylene polymerization, an electron donor is often added as the third component to control the isotacticity of the product and improve the polymerization activity. Since U.S. Patent No. 4,544,717 disclosed that by adding an i...

Claims

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Application Information

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IPC IPC(8): C08F10/00C08F4/649C08F4/645C08F10/06
CPCY02P20/52
Inventor 谢伦嘉凌永泰田宇冯再兴赵思源胡青亢宇
Owner CHINA PETROLEUM & CHEM CORP
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