Solid catalyst component and catalyst system for olefin polymerization and olefin polymerization process
A solid catalyst and olefin polymerization technology, applied in the field of olefin polymerization, to achieve the effect of improving copolymerization performance and polymerization activity
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[0078] Specifically, the preparation method of the magnesium halide alkoxide carrier may include: mixing magnesium halide and lower-carbon alcohol, raising the temperature to generate a magnesium halide alcoholate melt, the reaction temperature is 110-130°C, Put it into a cooled inert medium after being subjected to high-shearing action to form spherical magnesium halide alcoholate particles, and obtain a spherical carrier after washing and drying. The dispersant system can use hydrocarbon inert solvents, such as kerosene, white oil, silicone oil, paraffin oil, vaseline oil, etc. The cooling inert medium can be selected from pentane, hexane, heptane, petroleum ether, raffinate and the like.
[0079] In addition, the magnesium halide alcoholate carrier can be obtained by referring to the preparation method of CN1091748A, and the related contents disclosed in it are all incorporated into the present invention as a reference.
[0080] According to the present invention, the tita...
preparation example 1
[0144] Under ice-bath conditions, 1,2-phthalylene dimethyl ether (1.0g) was added dropwise to a mixture of aqueous formaldehyde (4mL / 38%) / 0.1mL chloroform / concentrated hydrochloric acid (6mL) for reaction, 30 After 1 min, the solution became a paste and stirring was continued for 4 h at room temperature. The solid was collected by filtration, washed with ice water, and thoroughly dried to obtain 0.5 g of compound A represented by formula (IV).
[0145]
preparation example 2
[0147] Dissolve 3-ethoxy-4-(2-allyloxy)benzyl alcohol (5g) in 30mL of methanol, add 15mL of 65% perchloric acid dropwise under ice bath and stirring, and stir at room temperature under nitrogen protection 18h. Sufficient dichloromethane was added to the reaction product to dissolve the precipitate. The organic phase was washed with water until neutral (all perchloric acid was removed), dried, and then the organic solvent was spin-dried to obtain 2 g of compound Q precursor. Under nitrogen protection and stirring, 2 g of compound Q precursor was dissolved in 1,4-dioxane 10 mL, and then ethanol and Pt / C catalyst were added. Add 10mL of 65% perchloric acid dropwise, and keep the temperature at 60°C for 20h. The reaction product was filtered with suction to remove the catalyst, washed with 1,4-dioxane and dichloromethane in sequence. The organic phase was fully washed with water, dried and concentrated, compound Q would be gradually precipitated, and 1 g of compound Q represent...
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