Ethylene → Ethene;oct-1-ene

Participants

Reaction Steps

A stirred 3.8 liter reactor was charged with 1450 g of Isopar-E™ mixed alkanes solvent (available from Exxon Chemicals Inc.) and 126 g of 1-octene comonomer. Hydrogen (10 mMol) was added as a molecular weight control agent using a mass flow meter. The reactor was heated to the polymerization temperature of 130° C. and saturated with ethylene at 450 psig (3.1 MPa). Catalyst, (t-butylamido)dimethyl(η5-tetramethylcyclopentadienyl)silanetitanium (II) η4-1,3-pentadiene (A), and cocatalyst, trispentafluorophenylborane (FAB), were dissolved in Isopar E™ and premixed in a drybox with the aluminum tertiary component, and transferred to a catalyst addition system and injected into the reactor over approximately 3 minutes using a flow of high pressure Isopar E™ solvent. The polymerization conditions were maintained for 10 minutes with ethylene supplied on demand to maintain 450 psig reactor pressure. The ethylene consumed during the reaction was monitored using a mass flow meter and this consumption was used to calculate the catalyst efficiency.

Provenance & Evidence