Catalyst component for olefin polymerization and catalyst thereof

A technology of olefin polymerization and catalyst, applied in the application of olefin homopolymerization and copolymerization, the application field of catalyst in olefin polymerization reaction, can solve the problem of low catalyst activity, narrow relative molecular weight distribution of polymer, poor polymer size, etc. question

Active Publication Date: 2011-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In industrial production, each of these internal electron donors has certain defects in practical applications: the catalytic activity of catalysts using aromatic diester compounds is lower than that of diether compounds; Although the catalyst has high catalytic activity and good hydrogen modulation sensitivity, the relative molecular mass distribution of the obtained polymer is narrow; although the relative molecular mass distribution of the 2,3-dihydrocarbyl succinate ester compound is wide, the presence of this Problems such as difficulties in the industrial application of the internal electron donor compound synthesis process; the C of the ω-cyano group used in the patent CN1242780A 2 ~C 5 Catalyst for monobasic acid ester compounds, there is also C of ω-cyano group 3 ~C 5 Difficulty in the synthesis of monobasic acid ester compounds. Although the synthesis of cyanoacetate compounds containing substituents is relatively easy, compared with the catalysts of aromatic diester compounds, the C of ω-cyano 2 ~C 5 Monobasic acid ester compounds are less active catalysts for internal electron donors, and the resulting polymer is also poor in isotacticity

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Preparation of spherical catalyst solid components

[0046] 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.

[0047] 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. 200910077779.6 2,3-diisopropyl-2-cyanodiethyl succinate 5mmol prepared by the method described in the patent application description, filter off the liquid, wash twice with titanium tetrachloride, wash four times with hexane times, the spherical catalyst solid component was obtained after vacuum drying.

[0048] (2) Propylene polymerization

[0049] In a 5L autoclave, 5ml of a hexane solution of triethylaluminum (the concentration of triethylal...

Embodiment 2

[0055] (1) The preparation of the spherical catalyst solid component is the same as in Example 1, except that 3-methyl-2-isopropyl- Diethyl 2-cyanosuccinate (5 mmol) was substituted for diethyl 2,3-diisopropyl-2-cyanosuccinate.

[0056] Infrared spectrogram data of catalyst solid components:

[0057] IR (cm -1 ): 2287, 1697, 1459, 1377, 1311, 1243, 1008, etc.

[0058] The wavelength dispersive X-ray fluorescence spectrometry (WDXRF) analysis results of the solid components of the catalyst: Mg 22.7%, Cl 74.7%, Ti 2.2%, and the balance is other elements.

[0059] (2) The propylene polymerization method is the same as that of Example 1, and the test results are shown in Table 1.

Embodiment 3

[0061] (1) preparation of spherical catalyst solid component, with embodiment 1.

[0062] (2) Propylene polymerization

[0063] In a 5L autoclave, 5ml of a hexane solution of triethylaluminum (the concentration of triethylaluminum is 0.5mmol / ml), 1.25ml of cyclohexylmethyldimethoxysilane (CHMMS ) hexane solution (the concentration of CHMMS is 0.1mmol / ml), 10ml of anhydrous hexane and 10mg of the solid catalyst component obtained in Example 1 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.

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Abstract

The invention relates to a catalyst and a catalyst component for olefin polymerization as well as application thereof to olefin polymerization and copolymerization. In the invention, the cyan compound with a special structure is used as the catalyst synthesized by an internal electron donor. When the catalyst component is used for propylene polymerization, the catalyst component has high catalytic activity, the isotactic index of the polymerization product is high, and the molecular weight distribution is wide.

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. More specifically, it relates to a solid catalyst component containing a compound of general formula (II) as an internal electron donor, and the application of the catalyst containing this component in olefin polymerization. Background technique [0002] In this field, it is well known that Ziegler-Natta catalyst consists of at least two parts: the active component containing transition metal, also known as the main catalyst, the more transition metal compounds used in practice are titanium and vanadium, generally with carrier magnesium chloride Together to form a solid catalyst component; and metal organic compounds containing elements of Group IA to IIIA of the periodic system, also known as co-catalysts, mainly alkyl aluminum or alkyl aluminum halides. In some cases, especially when it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/649C08F10/06
Inventor 谢伦嘉凌永泰田宇冯再兴赵思源胡青孙竹芳亢宇
Owner CHINA PETROLEUM & CHEM CORP
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