Magnesium halide carrier and application thereof, and olefin polymerization catalyst, olefin polymerization catalyst system, and olefin polymerization method
A technology of olefin polymerization and magnesium halide, applied in olefin polymerization catalysts and olefin polymerization catalyst systems, in the field of olefin polymerization, to achieve the effects of increased production capacity, low production cost, and strong load capacity
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[0020] The preparation method of the magnesium halide carrier according to the present invention may comprise, in the presence of a seed crystal, contacting metallic magnesium with a halogenated alkane represented by formula I to form a magnesium halide,
[0021] R 1 x 1 (Formula I),
[0022] In formula I, R 1 for C 3 -C 12 straight-chain or branched-chain alkyl, X 1 is halogen (for example: fluorine, chlorine, bromine or iodine).
[0023] According to the present invention, in formula I, R 1 preferably C 3 -C 6 Alkyl; X 1 It is preferably chlorine, bromine or iodine, more preferably chlorine or bromine, still more preferably chlorine.
[0024] In the present invention, the C 3 -C 12 Examples of linear or branched alkyl groups can be, but are not limited to: n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, tert-amyl Nyl, neopentyl, n-hexyl, n-heptyl, n-octyl, n-decyl and n-dodecyl.
[0025] According to the present inven...
Embodiment 1
[0060] (1) Preparation of magnesium halide carrier
[0061] In a 500mL five-neck reaction flask equipped with a stirrer, condenser, dropping funnel and heating device, add 150mL of n-hexane, 1.5g of magnesium powder and 6g of clay (commercially purchased from Zhejiang Fenghong Clay Chemical Co., Ltd., average particle 40 microns in diameter, dried at a temperature of 200°C for 4 hours before use), 14mL of n-chlorobutane was added dropwise to the reaction flask at a temperature of 60°C, and the dropping time was 2 hours. After the dropwise addition was completed, The reaction was continued for 2 hours at a temperature of 60°C. After the reaction was completed, the reaction mixture was cooled to room temperature, filtered, and washed 3 times with n-hexane to obtain 100 mL of a suspension containing the magnesium halide carrier according to the present invention (wherein the concentration of the magnesium halide carrier was 0.055 g / mL). Based on the total amount of the magnesium...
Embodiment 2
[0068] (1) Preparation of magnesium halide carrier
[0069] In a 500mL five-neck reaction flask equipped with a stirrer, condenser, dropping funnel and heating device, add 150mL of n-hexane, 1.5g of magnesium powder and 6g of montmorillonite (commercially purchased from Zhejiang Fenghong Clay Chemical Co., Ltd., The average particle diameter is 25 microns, dried at a temperature of 200°C for 4 hours before use), and 14 mL of n-chlorobutane was added dropwise to the reaction flask at a temperature of 60°C, and the addition time was 2 hours, and the addition was completed After that, the reaction was continued for 3 hours at a temperature of 60°C. After the reaction was completed, the reaction mixture was cooled to room temperature, filtered, and washed 3 times with n-hexane to obtain 100 mL of a suspension containing the magnesium halide carrier according to the present invention (wherein the concentration of the magnesium halide carrier was 0.052 g / mL). Based on the total amo...
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