Catalyst component for ethylene polymerization and catalyst thereof
An ethylene polymerization and catalyst technology, applied in the field of catalyst components, can solve problems such as unsatisfactory hydrogen adjustment sensitivity, and achieve the effect of less subdivision content and high catalytic activity
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[0041] Example 1
[0042] (1) Preparation of catalyst components: In a reactor that has been fully replaced with high-purity nitrogen, add 4.0g magnesium dichloride (0.042mol), 60ml toluene, 19.2g (0.084mol) tetraethoxy titanium, and 6.9ml. (0.1176mol) ethanol, 3ml (0.0135mol) tetraethoxysilane, heated to 70°C with stirring, reacted at 70°C for 1 hour after the solid was completely dissolved to form a uniform solution. The temperature was lowered to 65°C, 21ml of 2M monochlorodiethylaluminum heptane solution was slowly added dropwise, and the reaction was maintained at 65°C for 1 hour, then the temperature was raised to 90°C and the reaction continued for 1 hour. The system was cooled to 30°C, the solid was allowed to settle, the filtrate was filtered, and the solid was washed twice with 60ml of hexane, 60ml of hexane was added to the solid and stirred, 60ml of titanium tetrachloride was slowly added dropwise and reacted at 30°C for 1 hour. Stop stirring and let it stand. The su...
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[0045] Example 2
[0046] (1) The synthesis of the catalyst component is the same as in Example 1. Only the amount of ethanol was changed from 6.9ml to 4.9ml.
[0047] (2) Ethylene polymerization is the same as in Example 1. The catalyst composition and polymerization results are shown in Table 1.
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[0048] Example 3
[0049] (1) The synthesis of the catalyst component is the same as in Example 2. Only diethyl aluminum chloride is changed to isobutyl aluminum dichloride.
[0050] (2) Ethylene polymerization is the same as in Example 1. The catalyst composition and polymerization results are shown in Table 1.
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