Catalyst component and its preparation method and application, catalyst system for olefin polymerization and its use, and olefin polymerization method
An olefin polymerization and catalyst technology, applied in the application field of the catalyst system, can solve the problems of poor hydrogen conditioning sensitivity, poor hydrogen conditioning sensitivity and low polymerization activity of the catalyst, and achieves improved hydrogen conditioning sensitivity, low energy consumption and material consumption, The effect of changing production is convenient and easy
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preparation example Construction
[0065] As mentioned above, the present invention provides a method for preparing a catalyst component for olefin polymerization, the method comprising: carrying out a contact reaction of a magnesium halide adduct, a titanium compound and a succinate compound, the magnesium halide The preparation steps of the adduct include:
[0066] (1) the aqueous MgX 1 Y and R 1 OH and an alkoxybenzoyl compound are mixed, and the resulting mixture is heated to obtain a liquid magnesium halide adduct; or
[0067] Anhydrous MgX 1 Y and R 1 OH, an alkoxybenzoyl compound and water are mixed, and the obtained mixture is heated to obtain a liquid magnesium halide adduct;
[0068] (2) In the presence of an inert liquid medium, pass the liquid magnesium halide adduct through the structural unit with holes under pressure to the liquid cooling medium for rapid cooling and drying to obtain spherical magnesium halide adduct particles.
[0069] According to the method of the present invention, the M...
Embodiment approach
[0093] According to a preferred embodiment of the present invention, the structural unit with holes is a mesh layer.
[0094] According to a preferred embodiment of the present invention, the mesh layer is a metal mesh layer.
[0095] According to the method of the present invention, the adduct solid particles with equivalent particle morphology can be obtained by adopting the metal mesh with multi-layer large-aperture structure and the metal mesh with relatively small number of layers with small-aperture structure. When preparing a small particle size (such as less than 30 μm) adduct carrier, it is preferable to use a metal mesh structure with 1-20 layers of small pore structure (such as a pore size of 30-50 μm). It is preferred to use a metal mesh structure with 1-20 layers of relatively large aperture (eg, 65-200 μm aperture) structure.
[0096] According to a preferred embodiment of the present invention, the mesh layer includes 1-20 layers, preferably 2-8 layers, more pr...
preparation Embodiment 1
[0161] In a 1000mL reaction kettle, add 150mL of white oil (commercially purchased from Guangzhou Mingen Petrochemical Co., Ltd., with a water content of less than 50ppm by weight), 300mL of methyl silicone oil (commercially purchased from Dow Corning, with a viscosity of 300 centipoise / 20°C, by weight, the water content is less than 50ppm), 30g magnesium chloride containing 0.44wt% moisture (commercially purchased from Fushun Xinyi Titanium Factory), 50mL absolute ethanol (commercially purchased from Beijing Chemical Plant, by weight , the water content is less than 100 ppm) and 1 mL of 2-methoxybenzoyl chloride (commercially purchased from TOKYO KASEI KOGYO CO.LTD), and the temperature was raised to 125° C. under stirring. After 3 hours of constant temperature reaction, the mixture was pressed into 2L of hexane pre-cooled to -30°C (with By weight, the water content is lower than 5ppm), and quenched and formed. The liquid was removed by filtration, and the obtained solid wa...
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