2414-98-4Relevant articles and documents
Sclar,Kilpatrick
, p. 584 - 593 (1937)
Alkoxymagnesium, method for producing alkoxymagnesium, solid catalyst component for olefin polymerization, olefin polymerization catalyst, and method for producing olefin polymer
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Page/Page column 24; 26-34, (2021/05/19)
There is provided a novel alkoxymagnesium which, when used as a constituent of a solid catalyst component for olefin polymerization to polymerize an olefin, may reduce the formation rate of a fine powder and may form a polymer having an excellent particle size distribution under high polymerization activity. The alkoxymagnesium is characterized by comprising secondary particles each of which is an aggregate of primary particles having an average particle diameter of less than 1 μm and by having a ratio represented by the average particle diameter of the primary particles/the average particle diameter of the secondary particles of 0.1 or less, a total pore volume of 0.5 to 1 cm3/g, a specific surface area of less than 50 m2/g, and a particle size distribution index (SPAN) 1 or less.
Alkoxy metal powder as well as preparation method and application thereof
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Paragraph 0069-0070; 0103-0104, (2019/12/02)
The invention relates to a preparation method and an application of alkoxy metal powder, which are applied to preparation of an alkoxy metal carrier of an olefin polymerization catalyst. The alkoxy metal carrier comprises the following components: metal halide, sodium alcoholate or potassium alcoholate, or a solvent. The molar ratio of the components for preparing the alkoxy metal compound is as follows: metal halide: sodium alcoholate or potassium alcoholate = 1:(0.001-30); wherein the metal halide is a metal chloride, a metal bromide, a metal fluoride or a metal iodide; the metal is a main group metal, a sub-group metal or a VIII group metal. The catalyst prepared from the carrier is used for preparing an olefin polymerization catalyst, and has the advantages of high catalyst activity, good hydrogen regulation performance, good copolymerization performance, low polymer powder content, low wax content and good particle morphology; the catalyst is used for ethylene homopolymerization,ethylene and alpha-olefin copolymerization or ethylene and polar alkene monomer copolymerization, propylene homopolymerization, propylene and alpha-olefin copolymerization, or propylene and polar alkene monomer copolymerization.
A preparation method of spherical magnesium ethylate (by machine translation)
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Paragraph 0017, (2017/01/26)
The invention relates to a method for preparing spherical magnesium ethylate, which belongs to the technical field of the preparation of metal oxide. The invention of the preparation method of spherical magnesium ethylate, the protection of inert gas in the reactor, the alcohol and the metal magnesium in including Ding b acid amide base cobalt phthalocyanine and halogen or its salt composite catalyst reaction is carried out under the action of, controlling the reaction temperature at 40?48 °C, fed-batch, after the reaction to the end point, vacuum drying. The resulting ethoxy magnesium has better ball stereoregularity. The method has the special magnesium ethylate in petro-chemical industry are suitable for olefin polymerization catalyst precursor. (by machine translation)
