Ethylene → Ethene;oct-1-ene

HRID 1349935Notes

Reaction equation

HRID 1349935 reaction equation
[CH2:1]=[CH:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH3:8].[H][H].C=C.[Al]>>[CH2:1]=[CH2:2].[CH2:1]=[CH:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH3:8]

Participants

5

Reactant 4

HCID 6325Ethylene2×HCID 81251-OcteneHCID 5359268AluminumHCID 178418361HCID 178418361, compound

Product 1

HCID 168495Ethene;oct-1-ene

Procedure

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.

Workup

  1. additionA stirred 3.8 liter reactor was charged with 1450 g of Isopar-E™
  2. additiontransferred to a catalyst addition system
  3. customThe polymerization conditions
  4. temperatureto maintain 450 psig reactor pressure
  5. customThe ethylene consumed during the reaction
  6. customthis consumption

Sources & evidence

ORD record
ord-847e7c41264a4fb68492d1a11013fce5
Source dataset
uspto-grants-2007_05
Patent number
US07214638B2

Reaction notes

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