Catalyst component, catalyst and preparation method thereof for olefin polymerization
A catalyst and a technology for propylene polymerization, which are applied in the field of preparing the olefin polymerization catalyst components, catalyst components and catalysts for olefin polymerization, can solve the problems of low melt flow rate of polymers, and achieve good hydrogen adjustment sensitivity, Effect of High Stereotropic Ability and High Isotactic Index
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Embodiment 1
[0045] (1) Preparation of catalyst solid components
[0046] In the reactor fully replaced by high-purity nitrogen, 4.8g of magnesium chloride, 97ml of toluene, 4ml of epichlorohydrin, and 12.5ml of tributyl phosphate were sequentially added, and the temperature was raised to 50°C under stirring and maintained for 2.5 hours. After the solid is completely dissolved, add 1.4 g of phthalic anhydride and keep it for 1 hour, cool the solution to below -25°C, add TiCl4 dropwise within 1 hour, slowly raise the temperature to 80°C, and add the electron donor compound 4-ethane 6 mmol of 3,5-heptanediol dibenzoate was maintained at 80°C for 1 hour. After filtering, add 70ml of toluene and wash twice. Add 60ml of toluene, TiCl 4 40ml, heated up to 110°C and maintained for 2 hours. After filtration, add toluene 60ml, TiCl 4 40ml, heated up to 110°C and maintained for 2 hours. After filtration, 80 ml of toluene and 2.66 g of tributyl phosphate were added, and the mixture was maintaine...
Embodiment 2
[0050] Same as Example 1, except that 0.67 g of tributyl phosphate is added when washing with toluene. Aggregated data are shown in Table 1.
Embodiment 3
[0052] With embodiment 1, difference is to add 1.33g triethyl phosphate when washing with toluene. Aggregated data are shown in Table 1.
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