Spherical magnesium halide alcohol polymer as well as preparation method and application thereof

A magnesium halide alcoholate and compound technology, which is applied in the field of olefin polymerization, especially propylene polymerization or copolymerization catalyst components, can solve the problems of difficult formation of spherical particles with small particle size, easy stickiness, and reduction of fine powder content, and achieve High isotacticity, simple preparation route, and good catalyst activity

Active Publication Date: 2009-10-07
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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  • Spherical magnesium halide alcohol polymer as well as preparation method and application thereof
  • Spherical magnesium halide alcohol polymer as well as preparation method and application thereof
  • Spherical magnesium halide alcohol polymer as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Preparation of the carrier:

[0048] In a 500mL pressure-resistant reactor, sequentially add 250ml of silicone oil, 15g of magnesium chloride, 26ml of ethanol and 25g of polyethylene terephthalate (PET, the melting point of which is determined by DSC is 89°C). The emulsifying machine is emulsified into pre-cooled hexane, filtered with suction and washed three times with hexane, and dried in vacuum to obtain a spherical carrier, referred to as Sp-p for short.

[0049] Catalyst preparation:

[0050] Into a 300 mL glass reaction bottle, add 100 ml of titanium tetrachloride, cool to -20°C, add 8 grams of the above-mentioned Sp-p spherical carrier, and heat up to 100°C. Add 1.5ml of diisobutyl phthalate in the heating process, filter off the liquid, wash twice with titanium tetrachloride, wash three times with hexane, and dry in vacuo to obtain the catalyst made by the Sp-p spherical carrier, Abbreviated as SpC-p.

[0051] Propylene polymerization:

[0052] The liquid-ph...

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Abstract

The invention relates to a catalyst component for olefinic polymerization particularly for propylene polymerization or copolymerization, in particular to a novel alcohol polymer containing three components of magnesium halide, alcohol and polyester and an application of the alcohol polymer in the preparation of an olefin polymerization catalyst. When a catalyst prepared by using the alcohol polymer as a carrier is used for the olefinic polymerization, particularly the propylene polymerization, the catalyst shows better polymerization activity, and a polymer has higher isotacticity. The catalyst is used in the field of petrochemical engineering.

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 polyester. Background technique [0002] It is well known that the titanium-based catalyst supported on the magnesium halide carrier is an important catalyst for the production 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. [0003] Most of the magnesium halide alcoholates widely used in industry are alcoholates of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/649C08F4/02C08F10/00C08F110/06
Inventor 凌永泰陈伟谭扬
Owner CHINA PETROLEUM & CHEM CORP
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