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Magnesium halide alcohol adduct and preparation method and application thereof

A technology of magnesium halide alcohol compound and polyether compound, which is applied in the field of olefin polymerization, especially in the field of propylene polymerization or copolymerization catalyst components, can solve the problems such as difficulty in forming spherical particles of particle size, easy stickiness, and reduction in fine powder content. , to achieve the effect of good particle shape, less fine powder and small particle size

Active Publication Date: 2009-09-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the composite spherical carrier is easily sticky during the preparation process, it is difficult to form spherical particles with a suitable particle size. The size of the disclosed spherical carrier is D50: 70-200, and its catalytic activity for propylene polymerization is only It is 406g PP / g cat h, and as Chinese patent CN101050245 discloses a kind of C, C-dioxyl compound is introduced in the support, and the average particle diameter of the obtained support is about 50 μm, and the supported catalyst has better hydrogen To adjust the sensitivity, the content of fine powder in the polymer has a certain reduction

Method used

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  • Magnesium halide alcohol adduct and preparation method and application thereof
  • Magnesium halide alcohol adduct and preparation method and application thereof
  • Magnesium halide alcohol adduct and preparation method and application thereof

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Experimental program
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Embodiment 1

[0049] Preparation of the carrier:

[0050] In a 500mL pressure-resistant reactor, sequentially add 250ml of silicone oil, 15g of magnesium chloride, 26ml of ethanol and 0.3g of polypropylene alcohol (PPG). Suction filtration and washing with hexane three times, and vacuum drying to obtain a spherical carrier referred to as Sp-p for short.

[0051] Catalyst preparation:

[0052] Into a 300 mL glass reaction bottle, add 100 ml of titanium tetrachloride and hexane, cool to -20°C, add 8 grams of the above-mentioned spherical carrier, and heat up to 110°C. During the heating process, 1.5 ml of diisobutyl phthalate was added, the liquid was filtered off, washed twice with titanium tetrachloride, washed three times with hexane, and dried in vacuo. The catalyst prepared by Sp-p carrier is called SpC-p for short.

[0053] Propylene polymerization:

[0054] The liquid-phase bulk polymerization of propylene was carried out in a 5L stainless steel autoclave. Under nitrogen protectio...

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Abstract

The invention relates to a catalyst component used for olefin polymerization, specially for propylene polymerization or copolymerization, in particular to a novel spherical alcohol adduct containing ternary components of magnesium halide, alcohol and polyether as well as the application of the alcohol adduct in the preparation of olefin polymerization catalyst. When the catalyst prepared by taking the alcohol adduct as a carrier is used for olefin polymerization, especially for propylene polymerization, better polymerization activity, good polymer grain forms and less fine powders are shown. The invention is used in the field of petrochemical industry.

Description

technical field [0001] The present invention relates to a catalyst component for olefin polymerization, especially propylene polymerization or copolymerization, in particular to an alcoholate of a ternary component comprising magnesium halide, alcohol and polyether. Background technique [0002] In the field, titanium-based catalysts supported on magnesium halide carriers have been widely used in the synthesis of polypropylene. After magnesium halide and alcohol form alcoholate, the supported catalyst formed after reacting with titanium halide and electron donor compound has high catalytic efficiency and stereospecificity when it is used for olefin polymerization, especially propylene polymerization. In particular, the synthesized polymers have good particle morphology and high apparent density when using catalysts prepared from spherical alcoholates as supports. Good polymer particle morphology is very important in the industrial production of polypropylene synthesis. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/02C08F4/645C08F10/00
Inventor 凌永泰陈伟
Owner CHINA PETROLEUM & CHEM CORP
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