Ethylene → Decane

Temperature

10 °C

In a 200 ml glass flask replaced with nitrogen, 52.7 ml of hexane was placed, and the hexane slurry of the solid catalyst component (X-4) (4.0 g in terms of solid part) prepared above was introduced. Next, the system was cooled down to 10° C., then 5.32 mmol of TIBAL and 0.535 ml of 1-hexene were added, and feed of ethylene was started at 30 l/hr at atmospheric pressure. Polymerization was carried out at 25° C. until the integrated absorption quantity of ethylene by the solid catalyst component became 10.3 liters, and after the polymerization was completed, the system was replaced with nitrogen. Thus, prepolymerizaion was completed. Thereafter, the supernatant liquid was removed by decantation, and the remainder was washed with decane three times to give a decane slurry. Thus, a prepolymerized catalyst (XP-4) was prepared. A part of the resulting decane slurry of the prepolymerized catalyst (XP-4) was withdrawn, and the concentration was examined. As a result, the Zr concentration was 0.067 mg/ml, and the Al concentration was 4.77 mg/ml.

1. additionabove was introduced
2. customPolymerization
3. customwas carried out at 25° C. until the integrated absorption quantity of ethylene by the solid catalyst component
4. customThereafter, the supernatant liquid was removed by decantation
5. washthe remainder was washed with decane three times

ORD record

ord-1e3159a90b454a9092ca0e5fc007d8e8

Source dataset

uspto-grants-2012_10

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08299193B2