Catalyst for vinyl polymerization or copolymerization as well as preparation and application thereof

A technology of ethylene polymerization and catalyst, applied in the field of catalysts, can solve the problems of unsatisfactory polymer particle shape and particle size distribution, difficulty in uniform distribution of catalyst active ingredients, unsatisfactory catalyst efficiency, etc., and achieve good industrialization prospects , Avoid agglomeration and wall sticking phenomenon, the effect of moderate particle size

Active Publication Date: 2009-09-02
迈瑞尔实验设备(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in patents such as US302565, US4379759, and CN1064870A, titanium compounds, magnesium compounds, and electron donors are loaded on carriers such as inorganic magnesium compounds and silica gel. Due to the uneven particle size distribution of the carrier itself, the effective components of the catalyst are controlled on the catalyst carrier. The uniform distribution on the surface is difficult, the repeat stability during the catalyst preparation process is poor, and the particle morphology and particle size distribution of the obtained polymer are not satisfactory
[0003] In US4376062, on the basis of the above-mentioned active components of the catalyst, fumed silica is used as a carrier, mixed with the matrix prepared by titanium compound, magnesium compound and electron donor compound, and the cata

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] 1. Catalyst Preparation

[0028] Add 3g ethoxymagnesium chloride to the 250ml there-necked flask through nitrogen blowing, add ethanol in a ratio of 1:15 according to the mol ratio of anhydrous magnesium compound and alcohol compound, heat under reflux and stir for 2 hours, cool to room temperature, after filtering Add 30ml heptane to it, add triethylaluminum according to the ratio of anhydrous magnesium compound and organoaluminum compound mol ratio of 2:1, slowly heat up to 60 ℃ and add 2mlTi(OC) 4 H 9 ) 4 , constant temperature reaction for 2 hours, cooling, after filtering off the supernatant liquid, add TiCl according to the ratio of the molar ratio of anhydrous magnesium compound and titanium halide to 1:20 4 , heated to 120°C for 2 hours, cooled to room temperature, washed with hexane for 5 times, and dried in vacuum to obtain a gray-white catalyst. The content of Ti in the catalyst was 3.84wt%, and the content of Mg was 7.86wt%. Slurry cat...

Example Embodiment

[0031] Example 2

[0032] 1. Catalyst Preparation

[0033] Add 3g n-butylmagnesium chloride to the 250ml there-necked flask through nitrogen blowing, add ethanol in a ratio of 1:20 according to the mol ratio of anhydrous magnesium compound and oxygenated compound, heat under reflux and stir for 2 hours, cool to room temperature, filter Then add 30ml heptane to it, add triisobutylaluminum according to the ratio of the anhydrous magnesium compound to the organoaluminum compound mol ratio of 2:1, slowly heat up to 60 ° C and add 2mlTi(OC) 4 H 9 ) 4 , constant temperature reaction for 2 hours, cooling, after filtering off the supernatant liquid, add TiCl according to the ratio of anhydrous magnesium compound and titanium halide molar ratio of 1:20 4 , heated to 120°C for 2 hours, cooled to room temperature, washed with hexane for 5 times, and dried in vacuo to obtain an off-white catalyst. The content of Ti in the catalyst was 3.46wt%, and the content of Mg was 7.38wt%. Slurry...

Example Embodiment

[0036] Example 3

[0037] 1. Catalyst Preparation

[0038] In the there-necked flask of 250ml through nitrogen blowing, add 3g ethoxymagnesium chloride, add butanol in a ratio of 1:15 according to the mol ratio of anhydrous magnesium compound and oxygenated compound, heat under reflux for 2 hours, and cool to room temperature, After filtering, add 30ml heptane to it, add triethylaluminum in a ratio of 2:1 according to the molar ratio of anhydrous magnesium compound and organoaluminum compound, slowly heat up to 60 ° C and add 2mlTi(OC) 4 H 9 ) 4 , constant temperature reaction for 2 hours, cooling, after filtering out the supernatant liquid, add Ti(OC) according to the ratio of anhydrous magnesium compound and titanium halide molar ratio of 1:20 4 H9 ) 4 with TiCl 4 The mixture of (Ti(OC 4 H 9 ) 4 :TiCl 4 = 1:5) heated to 120° C. for 2 hours, cooled to room temperature, washed with hexane for 5 times, and vacuum-dried to obtain a gray-white catalyst. The content of Ti...

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PUM

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Abstract

The invention relates to a catalyst for alkene, in particular a catalyst for vinyl polymerization or copolymerization and a method for preparing the catalyst and application of the catalyst. A carrier obtained through the treatment on anhydrous magnesium compound by an alcohol compound is added with at least one activator composition, at least one reagent for an electron compound and a titanium content control element in the catalyst and at least one titanium composition to prepare the catalyst. The catalyst can be used for vinyl homopolymerization or copolymerization reaction between vinyl and other alkenes.

Description

technical field [0001] The present invention relates to a catalyst for the polymerization or copolymerization of olefins, especially ethylene, as well as the preparation method and application of the catalyst. Background technique [0002] Most of the existing catalysts for ethylene polymerization use magnesium, titanium, halogen and electron donors as the basic catalyst components. Compounds, silica gel and other carriers. For example, in patents such as US302565, US4379759, and CN1064870A, titanium compounds, magnesium compounds, and electron donors are loaded on carriers such as inorganic magnesium compounds and silica gel. Due to the uneven particle size distribution of the carrier itself, the effective components of the catalyst are controlled on the catalyst carrier. The uniform distribution on the surface is difficult, the repeat stability in the catalyst preparation process is poor, and the particle morphology and particle size distribution of the obtained polymer a...

Claims

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Application Information

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IPC IPC(8): C08F4/649C08F10/02
Inventor 朱博源
Owner 迈瑞尔实验设备(上海)有限公司
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