Ethylene → Ethene propene 1-butene

Temperatur

55 °C

To a 2000 ml polymerization apparatus dried under reduced pressure and thoroughly purged with nitrogen, 817 ml of dry hexane, 50 g of 1-butene and triisobutylaluminum (1.0 mmol) were charged at normal temperature, then the temperature inside the polymerization apparatus was elevated to 55° C., and the polymerization apparatus was pressurized with propylene to 0.70 MPa and subsequently pressurized with ethylene to 0.75 MPa. Thereafter, a toluene solution in which 0.001 mmol of diphenylmethylene(3-tert-butyl-5-ethylcyclopentadienyl) (2,7-ditert-butyl-fluorenyl)zirconium dichloride synthesized by Synthesis Method 4 and methylaluminoxane (manufactured by Tosoh Finechem Corp.) in terms of 0.3 mmol of aluminum were contacted, was added to the polymerization vessel, and polymerization was conducted for 25 minutes while maintaining the internal temperature at 55° C. and the total pressure at 0.75 MPa by continuously supplying ethylene. The polymerization was stopped by adding 20 ml of methanol. After depressurizing, a polymer was precipitated out of the polymerization solution in 2 L of methanol, and was dried in a vacuum at 130° C. for 12 hours. The obtained polymer was 46.1 g and the polymerization activity was 110.7 kg/mmol-cat-hr. The polymer had a composition of 74.5 mol % of propylene content, 17.5 mol % of ethylene content and 8.0 mol % of 1-butene content, and had an intrinsic viscosity [η] of 2.98 dl/g. Triad isotacticity was 94%.

1. customTo a 2000 ml polymerization apparatus
2. customdried under reduced pressure
3. additionwere charged at normal temperature
4. customwas elevated to 55° C.
5. additionwas added to the polymerization vessel, and polymerization
6. customa polymer was precipitated out of the polymerization solution in 2 L of methanol
7. customwas dried in a vacuum at 130° C. for 12 hours

ORD-Eintrag

ord-5291282436a44486be3e99f3936fc90e

Quelldatensatz

uspto-grants-2011_02

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07879960B2