Ethylene → Ethene;oct-1-ene

Participants

Reaction Steps

All liquid and gas feeds were passed through columns of alumina and a decontaminant (Q-5™ catalyst available from Englehardt Chemicals Inc.) prior to introduction into the reactor. Catalyst components are handled in a glovebox containing an atmosphere of argon or nitrogen. A stirred 2.0 liter reactor is charged with 740 g of mixed alkanes solvent and 118 g of 1-octene comonomer. Hydrogen (25 psi, 170 kPa) is added as a molecular weight control agent by differential pressure expansion from a 75 mL addition tank. The reactor is heated to 140° C. and saturated with ethylene at 500 psig (3.4 MPa). Metal complex as dilute toluene solution and cocatalyst as dilute solutions in hexane, were mixed and transferred to a catalyst addition tank and injected into the reactor. The cocatalyst was methylalumoxane used in a 1000:1 molar ratio to the catalyst. The polymerization conditions were maintained for 15 minutes with ethylene added on demand. The resulting solution was removed from the reactor, quenched with isopropyl alcohol, and stabilized by addition of a toluene solution containing 67 mg/100 g polymer of a hindered phenol antioxisant (Irganox™ 1010 from Ciba Geigy Corporation) and 133 mg/100 g polymer of a phosphorus stabilizer (Irgafos 168 from Ciba Geigy Corporation).

Provenance & Evidence