Olefin polymerization catalyst carrier and preparation method, olefin polymerization catalyst component, olefin polymerization catalyst and their applications
A catalyst carrier, a technology for olefin polymerization, which is applied to olefin polymerization catalyst carrier and preparation, olefin polymerization catalyst component and olefin polymerization catalyst and their application fields, can solve the problem of low ethylene structural unit content, carrier carrier adhesion, polymer bulk density low problems, to achieve the effect of increased bulk density, good shape and high activity
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[0044] According to a preferred embodiment of the present invention, the average particle diameter of the olefin polymerization catalyst carrier can be 10-100 microns, preferably 40-60 microns, and the particle size distribution is less than 1.2, preferably 0.6-0.8. In this preferred embodiment, the catalyst prepared from the olefin polymerization catalyst support can obtain an olefin polymer having a higher bulk density. In the present invention, the average particle diameter and particle size distribution of the olefin polymerization catalyst carrier can be measured with a Master Sizer 2000 laser particle size analyzer (manufactured by Malvern Instruments Ltd).
[0045] According to the present invention, the olefin polymerization catalyst carrier may also carry a trace amount of water, which comes from the trace amount of water carried by the synthesis raw material and the reaction medium.
[0046] According to the present invention, the synthetic raw materials of the catalyst c...
preparation example 1
[0102] This preparation example is used to illustrate the olefin polymerization catalyst support provided by the present invention and the preparation method thereof.
[0103] In a 0.6L reaction kettle, 8.0g (0.08mol) magnesium chloride, 56mL (0.96mol) ethanol, and 4.3g (0.016mol) chromium trichloride hexahydrate were added, and the temperature was raised to 90°C under stirring. Constant temperature reaction for 2 hours. The mixture was stirred at low speed (400 revolutions per minute) and dispersed for 30 minutes to emulsify. And 0.48 mol (38 ml) of epichlorohydrin was added to the emulsified product, and after reacting for half an hour, it was filtered under pressure. The filtered product was washed 5 times with hexane and dried under vacuum to obtain a catalyst carrier Z1 for olefin polymerization.
[0104] Characterized by nuclear magnetic resonance and elemental analysis, the structure of the catalyst carrier Z1 obtained is as follows:
[0105]
[0106] The average particle di...
preparation example 2
[0108] This preparation example is used to illustrate the olefin polymerization catalyst support provided by the present invention and the preparation method thereof.
[0109] In a 1.6L reactor, add 300mL white oil, 8.0g (0.08mol) magnesium chloride, 28mL (0.48mol) ethanol, 2.1g (0.008mol) chromium trichloride hexahydrate, and heat up to 100°C with stirring. React for 0.5 hour. The mixture was stirred at low speed (800 revolutions per minute) and dispersed for 30 minutes to emulsify. And 12.5 mL (0.16 mol) of epichlorohydrin was added to the emulsified product, and after reacting for 20 minutes, it was filtered under pressure, and the filtered product was washed 5 times with hexane, and finally the product was vacuum dried to obtain an olefin polymerization catalyst carrier Z2.
[0110] Characterized by nuclear magnetic resonance and elemental analysis, the structural formula of the obtained catalyst carrier Z2 is as follows:
[0111]
[0112] The average particle diameter (D50) of...
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Abstract
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