Method for preparing magnesium chloride loaded metallocene catalyst

A technology of metallocene catalysts and magnesium chloride, which is applied in the field of preparation of magnesium chloride-supported metallocene catalysts, can solve the problems of complicated carrier preparation, limited industrial application, poor carrier particle shape, etc., and achieve high bulk density, adjustable particle size, and good shape Effect
CN101817892AActive Publication Date: 2010-09-01CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2010-09-01

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Abstract

The invention discloses a method for preparing a loaded metallocene catalyst by taking magnesium chloride as a carrier, which comprises the following steps of: (1), preparation of a magnesium chloride carrier; (2), preparation of a magnesium chloride carrier of alkyl aluminoxane; and (3), preparation of a magnesium chloride loaded metallocene catalyst, wherein the magnesium chloride carrier is prepared by adopting a spraying method in which etrahydrofuran is taken as a solvent. In the method, preparation of the magnesium chloride carrier is simple; and the obtained loaded catalyst granule has good shape and adjustable size. The obtained loaded metallocene catalyst catalyzes copolymerization of ethylene and high-grade alpha-olefin with high copolymerization activity, and has the excellent granule shape of obtained rein powder materials, and high stacking density; and the loaded metallocene catalyst can be suitable for a slurry packing method and a gas phase polymerization process.
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Description

technical field

[0001] The invention relates to a preparation method of a magnesium chloride supported metallocene catalyst and the application of the catalyst prepared according to the invention in olefin polymerization. Background technique

[0002] The development and application of metallocene catalysts is another major breakthrough in the field of olefin polymerization catalysts after the traditional Ziegler-Natta catalysts, especially in the 1980s, Kaminsky and Sinn et al. (Angew.Chem., 1980,19,390; Adv. Organoment.Chem., 1980, 18, 99.) developed a high-efficiency cocatalyst methylaluminoxane (MAO), making the research on metallocene catalysts enter a stage of rapid development. Because the homogeneous metallocene catalyst requires a large amount of MAO to achieve high activity, the production cost is high, and the obtained polymer is amorphous, which cannot be used in the widely used slurry method or gas phase polymerization process. An effective way is to support th...

Claims

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