Preparation of metallocene catalyst
A metallocene catalyst, metallocene technology, applied in metallocene, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of reducing polymer crystallinity, reducing syndiotacticity, etc. The effect of the dirt phenomenon
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Embodiment 1
[0077] The preparation of embodiment 1 miPP catalyst
[0078] 5 g of MAO on P-10 silica was added to a 100 mL round bottom flask containing 30 mL of toluene and the flask was allowed to cool to 15°C. In a 20mL Wheaton bottle, the rac-Me 2 Si(2-Me-4-PhInd) 2 ZrCl 2 (65 mg) was slurried with 10 mL of toluene. This metallocene slurry was applied to a stirred dispersion of MAO on silica. The transfer of the metallocene was accomplished with a second 10 mL portion of toluene. The metallocene was reacted with MAO / silica at 15°C for 1 hour. After the solids had settled, the supernatant was removed with a cannula. Wash the loaded wet catalyst with 50 mL of toluene, let the solid settle, and take out the upper liquid with a cannula. Then, the supported wet catalyst was washed with 3 portions of 50 mL of hexane at 0° C. for 3 times. After the third hexane decantation, the wet catalyst slurry was diluted with 45 g of mineral oil. The miPP supported catalyst was obtained as a slu...
Embodiment 2
[0079] The preparation of embodiment 2 miPP catalyst
[0080] 4 g of MAO on P-10 silica was added to a 100 mL round bottom flask containing 30 mL of toluene and the flask was cooled to 0°C. In a 20mL Wheaton bottle, the rac-Me 2 Si(2-Me-4, 5-BzInd) 2 ZrCl 2 (60 mg) was slurried with 10 mL of toluene. This metallocene slurry was applied to a stirred dispersion of MAO on silica. The transfer of the metallocene was accomplished with a second 10 mL portion of toluene. The metallocene was reacted with MAO / silica at 0 °C for 1 hour. After the solids had settled, the supernatant was removed with a cannula. The supported wet catalyst was washed three times with 3 portions of 50 mL of hexane in sequence. After the third hexane decantation, the wet catalyst slurry was diluted with 45 g of mineral oil. A 7.0% solids slurry of the miPP supported catalyst was obtained.
Embodiment 3
[0081] The preparation of embodiment 3 miPP catalyst
[0082]4.8 g of MAO on P-10 silica was added to a 100 mL round bottom flask with 30 mL of toluene and the flask was cooled to 0°C. In a 20mL Wheaton bottle, the rac-Me 2 Si(2-MeInd) 2 ZrCl 2 (71 mg) was slurried with 10 mL of toluene. This metallocene slurry was applied to a stirred dispersion of MAO on silica. The transfer of the metallocene was accomplished with a second 10 mL portion of toluene. The metallocene was reacted with MAO / silica at 0 °C for 1 hour. After the solids had settled, the supernatant was removed with a cannula. The loaded wet catalyst was washed with 50 mL of hexane, and after the solid was allowed to settle, the upper liquid was taken out with a cannula. The supported wet catalyst was washed three times sequentially with 3 portions of 50 mL of hexane at 0°C. After the third hexane decantation, the wet catalyst slurry was diluted with 45 g of mineral oil. A 7.5% solids slurry of the miPP supp...
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