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Catalyzer component for olefin polymerization reaction and catalyzer thereof

A technology of olefin polymerization and catalyst, which is applied in the field of catalyst components and catalysts, and can solve the problems of insufficient polymerization activity and unsatisfactory activity

Active Publication Date: 2011-10-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN02155556.7 has introduced the preparation method of the catalyst that prepares polypropylene, and this catalyst preparation technology uses the dissolving system of magnesium chloride, isooctyl alcohol, phthalic anhydride and organosilicon compound, precipitates solid matter under the effect of titanium tetrachloride, then uses Electron donor compound and titanium tetrachloride are treated to obtain a solid catalyst, and the particle shape of the catalyst is improved, but the polymerization activity is still not high enough
[0006] Patent JP10212314 also introduces a method for olefin polymerization catalyst and high-yield production of high stereoregular polyolefin, which includes a cocatalyst, a R3R43-mSi(OR5)m compound, and a compound containing Ti, Mg, halogen and given The solid catalyst component prepared by contacting the component of the electron body with R12Si(OR2)2, the catalyst system has a higher isotacticity and bulk density of the polymer, but the activity is not very satisfactory

Method used

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  • Catalyzer component for olefin polymerization reaction and catalyzer thereof
  • Catalyzer component for olefin polymerization reaction and catalyzer thereof
  • Catalyzer component for olefin polymerization reaction and catalyzer thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In the reactor fully replaced by high-purity nitrogen, add 4.8g of magnesium chloride, 95ml of toluene, 4ml of epichlorohydrin, and 12.5ml of tributyl phosphate in sequence, raise the temperature to 50°C under stirring, and maintain it for 2.5 hours until the solid is completely dissolved After that, add 1.4g of phthalic anhydride and 1.8mmol of tetraethoxysilane, and keep it for 1 hour, cool the solution to below -25°C, and add TiCl dropwise within 1 hour 4 56ml, slowly warming up to 80°C, adding 6mmol of electron donor compound 2,4-pentanediol dibenzoate, maintaining 1 hour at 80°C, after filtering, adding 70ml of toluene, washing twice, adding 60ml of toluene, TiCl 4 40ml, heated up to 100°C, maintained for 2 hours, filtered, added 60ml of toluene, TiCl 4 40ml, heated up to 100°C, maintained for 2 hours, filtered, added 60ml of toluene, washed at boiling temperature for 5 minutes, added 60ml of hexane, washed twice at boiling temperature, each time for 5 minutes, the...

Embodiment 2

[0049] Same as embodiment 1, just add toluene 60ml, TiCl 4 40ml, heated to 110°C. The solid contains 3.0% (wt) titanium, 16.5% (wt) magnesium, 55.4% (wt) chlorine, 0.1% (wt) silicon, 0.35% (wt) tributyl phosphate, 2,4-pentanediol diphenyl Formate 11.8% (wt).

Embodiment 3

[0051] Same as Example 1, except that 3.6 mmol of tetraethoxysilane was added. The solid contains 3.3% (wt) titanium, 16.1% (wt) magnesium, 57.2% (wt) chlorine, 0.2% (wt) silicon, 0.4% (wt) tributyl phosphate, 2,4-pentanediol diphenyl Formate 12.3% (wt).

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Abstract

The invention relates to a catalyzer component for olefin polymerization reaction, comprising magnesium, titanium, halogen and at least two electron donor compounds a and b, wherein the electron donor compound a is chosen from a diol ester compound, the electron donor compound b is chosen from one organic silicon compound in a formula (II) or a formula (III), and the molar ratio of the electron donor compound a and the electron donor compound b is 50-0.5.The catalyzer is used for olefin polymerization, in particular for propene polymerization, high polymerization activity and high directionalcapacity are shown.

Description

technical field [0001] The present invention relates to a kind of catalyst component and catalyst for olefin polymerization, and this catalyst is in CH 2 = Application in CHR olefin polymerization, where R is hydrogen or C 1 -C 6 Alkyl or aryl. More particularly, it relates to a catalyst component and catalyst comprising at least two electron donor compounds a and b. technical background [0002] Ziegler-Natta catalysts for olefin polymerization are well known in the literature. Since U.S. Patent No. 4,495,388 proposed active magnesium halide as the carrier of Ziegler-Natta catalysts, high-efficiency carrier catalysts have been developed rapidly. Such catalysts typically include a transition metal-containing active component, usually with magnesium, titanium, halogen, and an internal electron donor as main components; a cocatalyst component, usually an organoaluminum compound; and an external electron donor component, Usually organosilicon compounds. Among them, the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/658C08F10/00
Inventor 刘海涛高明智蔡晓霞马吉星陈建华马晶杨林娜
Owner CHINA PETROLEUM & CHEM CORP