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Catalyst support, catalyst component and catalyst for olefin polymerization

A technology for catalyst carrier and olefin polymerization, which is applied in the field of catalyst carrier and can solve the problems of powder with low bulk density and so on

Active Publication Date: 2019-05-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although CN201410638496.5 and CN201410532200.1 propose a simple method for preparing polymer-doped catalysts, the above-mentioned catalysts can only obtain powders with lower bulk density during polymerization

Method used

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  • Catalyst support, catalyst component and catalyst for olefin polymerization
  • Catalyst support, catalyst component and catalyst for olefin polymerization
  • Catalyst support, catalyst component and catalyst for olefin polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1: the preparation of carrier

[0061] Add 4.6 g of magnesium chloride, 90 ml of toluene, 12 ml of tri-n-butyl phosphate, and 5 ml of hydroxyethyl acrylate into the reaction kettle, and keep the temperature constant for 2 hours at a stirring speed of 400 rpm and a temperature of 40°C. 2 ml of ethyl benzoate was added to the system, and the temperature was continued for 1 hour. The system was slowly heated up to 65 degrees, and the carrier particles were gradually precipitated. The temperature was kept constant for 1 hour, the mother liquor was filtered off, and washed several times with toluene and industrial hexane. Transfer it to a chromatographic funnel through hexane, and dry it with high-purity nitrogen to obtain a carrier with a narrow particle size distribution.

Embodiment 2

[0062] Embodiment 2: the preparation of carrier

[0063] Add 4.2 grams of magnesium chloride, 100 ml of toluene, 10 ml of triisobutyl phosphate, 5.0 ml of glycidyl acrylate, and 1.5 ml of hydroxyethyl methacrylate into the reaction kettle, and keep the temperature constant at a stirring speed of 350 rpm and a temperature of 35 °C. 2 hours. Add 2 g of ethyl naphthoate to the system, and keep the temperature constant for 1 hour. Add 0.05 g of benzoyl peroxide to the system, slowly raise the temperature to 70 degrees, and the carrier particles are gradually precipitated. The temperature was kept constant for 1 hour, the mother liquor was filtered off, and washed several times with toluene and industrial hexane. Transfer it to a chromatographic funnel through hexane, and dry it with high-purity nitrogen to obtain a carrier with a narrow particle size distribution.

Embodiment 3

[0064] Embodiment 3: the preparation of carrier

[0065]Add 4.5 grams of magnesium chloride, 70 ml of toluene, 9 ml of tripropyl phosphate, 5.0 ml of glycidyl acrylate, and 2 ml of hydroxyethyl acrylate into the reaction kettle, and keep the temperature constant for 2 hours at a stirring speed of 400 rpm and a temperature of 40°C. Add 2 g of ethyl anthracene carboxylate to the system, and keep the temperature constant for 1 hour. Add 0.05 g of benzoyl peroxide to the system, slowly raise the temperature to 70 degrees, and the carrier particles are gradually precipitated. Keep the temperature constant for 1 hour, filter off the mother liquor, and wash several times with toluene and industrial hexane solvents. Transfer it to a chromatographic funnel through hexane, and dry it with high-purity nitrogen to obtain a carrier with a narrow particle size distribution.

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Abstract

The present invention provides a catalyst carrier, a catalyst component and a catalyst for olefin polymerization. The catalyst carrier comprises a reaction product of the following components: a magnesium compound, an organic phosphorus compound, an alcohol compound having carbon-carbon double bonds, an aromatic monoester compound, optionally an epoxy compound having carbon-carbon double bonds, and optional free radical initiators. The present invention also provides the catalyst carrier and a method for preparing the catalyst component. The catalyst has narrow catalyst particle size distribution and good hydrogen regulation sensitivity, and polyethylene powder obtained by polymerization through the catalyst has a high bulk density.

Description

technical field [0001] The invention relates to a catalyst carrier, catalyst component and catalyst for olefin polymerization. Background technique [0002] A common preparation method of Ziegler-Natta type polyolefin catalyst is: first prepare a magnesium compound (or a solid complex formed by a magnesium compound and an electron donor) carrier with a certain particle shape and particle size distribution, such as patent CN200910176719. The alkoxy magnesium carrier described in X, or the magnesium chloride / ethanol carrier described in patent CN93102795.0, or the novel spherical magnesium compound carrier described in WO2011 / 044761A1. Then, the carrier is converted into a polyolefin catalyst by removing electron donors, chlorination, and titanium loading. [0003] However, the preparation of the above carrier either requires special equipment (such as patent CN93102795.0), or the material conversion rate is low (such as WO2011 / 044761A1), so a simple and efficient new method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F4/02C08F4/645C08F4/654C08F120/28C08F220/28C08F220/32C08F2/44
Inventor 黄庭周俊领李秉毅寇鹏马永华黄廷杰
Owner CHINA PETROLEUM & CHEM CORP