Ethylene → Ethene propene 1-butene

Temperature

40 °C

A 1.5-1 autoclave purged completely with nitrogen and equipped with a stirrer was charged with 1 l of liquefied propylene, 40 g of 1-butene and 1 mmol of triethylaluminum, and the mixture was stirred at 40° C. for 15 minutes. Subsequently, the autoclave was pressurized with ethylene, the pressure within the autoclave was kept at 1.63 MPa, and stirring was continued for 30 minutes. Further, 31 mg of the preactivated, supported metallocene catalyst as prepared above were added, and the copolymerization was continued for one hour, while keeping the internal temperature of the autoclave at 40° C. After completion of the copolymerization, unreacted monomer was discharged, and the contents were taken out of the autoclave to obtain 85 g of a propylene/ethylene/1-butene terpolymer (PEB4).

1. customA 1.5-1 autoclave purged completely with nitrogen
2. customequipped with a stirrer
3. stirringstirring
4. waitwas continued for 30 minutes
5. customas prepared
6. additionabove were added
7. waitthe copolymerization was continued for one hour
8. customat 40° C
9. customAfter completion of the copolymerization, unreacted monomer

ORD record

ord-9792e68dd2f54a93b7f4bd5617255647

Source dataset

uspto-grants-2002_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06388040B1