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Catalyst component and catalyst for olefin polymerization, and preparation methods thereof

A technology for olefin polymerization and catalyst is applied in the field of catalyst components, catalysts and their preparation for olefin polymerization, and can solve the problems of poor hydrogen adjustment sensitivity and difficulty in preparing high melting index polyethylene powder.

Active Publication Date: 2017-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned spherical / ellipsoidal N-type polyolefin catalysts have poor hydrogen modulation sensitivity, and it is difficult to prepare polyethylene powder with high melting index

Method used

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  • Catalyst component and catalyst for olefin polymerization, and preparation methods thereof
  • Catalyst component and catalyst for olefin polymerization, and preparation methods thereof
  • Catalyst component and catalyst for olefin polymerization, and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Preparation of catalyst components

[0062] Add 4.0 grams of magnesium chloride, 90 ml of toluene, 8.0 ml of epichlorohydrin, and 16.0 ml of tri-n-butyl phosphate into the reaction kettle, and react for 2 hours at a stirring speed of 450 rpm and a temperature of 60°C, and add 3 g of phthalate Formic anhydride and 2ml of methyl acetate, keep the temperature constant for 1 hour, cool down to -40°C, add 70ml of titanium tetrachloride dropwise, gradually raise the temperature to 95°C, and keep the temperature constant for 1 hour. 1 ml of butyl naphthoate was added, and the temperature was continued for 1 hour. The mother liquor was filtered off, washed several times with inert diluent toluene and organic solvent hexane, and then dried to obtain a solid catalyst component with good fluidity.

[0063] (2) Polymerization reaction

[0064] A: A stainless steel reaction kettle with a volume of 2L, after being fully replaced by high-purity nitrogen, add 1L of hexane and 1.0...

Embodiment 2

[0068] (1) Preparation of catalyst components

[0069] Add 4.0 grams of magnesium chloride, 100ml of toluene, 6.0ml of epichlorohydrin, and 12ml of triisobutyl phosphate into the reaction kettle, and react for 2 hours at a stirring speed of 450rpm and a temperature of 60°C, and add 2g of phthalo Acid anhydride and 1ml ethyl acetate, keep the temperature constant for 1 hour, cool down to -40°C, add 75ml of titanium tetrachloride dropwise, gradually raise the temperature to 95°C, and keep the temperature constant for 1 hour. 1 ml of ethyl benzoate was added and the temperature was continued for 1 hour. The mother liquor was filtered off, washed several times with inert diluent toluene and organic solvent hexane, and then dried to obtain a solid catalyst component with good fluidity.

[0070] (2) Polymerization reaction: with embodiment 1, polymerization result is shown in Table 1.

[0071] (3) Electron microscope photos: Catalyst electron microscope photos see Figure 6 .

Embodiment 3

[0073] (1) Preparation of catalyst components

[0074] Add 4.0 grams of magnesium chloride, 100ml of toluene, 8ml of epichlorohydrin, and 12ml of triisobutyl phosphate into the reaction kettle, and react for 2 hours at a stirring speed of 350rpm and a temperature of 60°C, and add 2g of phthalic anhydride and 1ml of methyl acetate, keep the temperature constant for 1 hour, cool down to -40°C, add 30ml of titanium tetrachloride dropwise, gradually raise the temperature to 95°C, and keep the temperature for 1 hour. 1 ml of n-butyl benzoate was added and the temperature was continued for 1 hour. The mother liquor was filtered off, washed several times with inert diluent toluene and organic solvent hexane, and then dried to obtain a solid catalyst component with good fluidity.

[0075] (2) Polymerization reaction: with embodiment 1, polymerization result is shown in Table 1.

[0076] (3) Electron microscope photos: Catalyst electron microscope photos see Figure 7 .

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Abstract

The invention provides a catalyst component for olefin polymerization. The catalyst component is a reaction product of a magnesium compound, an organic acid anhydride compound, an acetate compound, an aromatic ester compound and a titanium-containing compound. The invention also provides a preparation method for the catalyst component. The invention further provides a catalyst including the catalyst component. The catalyst has high hydrogen regulation sensitivity; and when the catalyst is applied to olefin polymerization, an obtained polymer powder has spherical / spheroidic particles and high bulk density.

Description

technical field [0001] The invention relates to a catalyst component for olefin polymerization, a catalyst and a preparation method thereof. Background technique [0002] In recent years, the hydrogen modulation sensitivity and particle morphology of Ziegler-Natta type olefin polymerization catalysts have gradually become a research hotspot. In order to improve the hydrogen tuning sensitivity of the catalyst, internal electron donors, such as siloxanes, ethers and carboxylate compounds, are usually added to the catalyst components. Such as CN1958620A has introduced siloxane electron donor in catalyst component; Such as CN200410073622.3 has introduced ortho-alkoxy substituted benzoic acid ester / carboxylate (or diether) composite to catalyst component Electron bodies; such as CN201010208966.6 and CN201210397456.7, both introduce benzoic acid ester compounds as electron donors into the catalyst components, thereby improving the hydrogen adjustment sensitivity of the catalyst. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F4/645C08F4/654
Inventor 黄庭周俊领李秉毅寇鹏马永华
Owner CHINA PETROLEUM & CHEM CORP
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