Ethylene → Ethene propene 1-butene

Temperature

35 °C

500 ml of dry hexane, 240 g of 1-butene, and 1.0 mmol of triisobutylaluminum were introduced at normal temperature into a polymerization apparatus (polymerization vessel) having a volume of 2000 ml thoroughly purged with nitrogen. Then, the temperature inside the polymerization vessel was raised to 35° C., and the polymerization vessel was pressurized with propylene to 0.6 MPa, and subsequently pressurized with supplied ethylene to 0.62 MPa. Thereafter, a toluene solution in which 0.005 mmol of diphenylmethylene(cyclopentadienyl)fluorenylzirconium dichloride and 1.5 mmol, relative to aluminum, of methylaluminoxane (manufactured by Tosoh Finechem Corp.) were contacted with each other was added to the polymerization vessel, and polymerization was conducted for 5 minutes while maintaining the internal temperature at 35° C. and the polymerization vessel pressure at 0.62 MPa by supplying ethylene. 20 ml of methanol was added to terminate the polymerization. After depressurizing, a polymer was precipitated out from the polymerization solution in 2 L of methanol, and was dried under vacuum at 130° C. for 12 hours.

1. customthoroughly purged with nitrogen
2. additioneach other was added to the polymerization vessel, and polymerization
3. temperaturewhile maintaining the internal temperature at 35° C.
4. customto terminate
5. customthe polymerization
6. customa polymer was precipitated out from the polymerization solution in 2 L of methanol
7. customwas dried under vacuum at 130° C. for 12 hours

ORD record

ord-b0a9cd8b4094455e973a69b0da3aaa89

Source dataset

uspto-grants-2012_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08329825B2