Toluene → 2-Butylcyclopenta-1,3-diene;zirconium(4+);dichloride

HRID 1952391Notes

Reaction equation

C1(C)C=CC=CC=1.[Cl-:8].[Cl-].[CH2:10]([C:14]1([Zr+2:19]C2(CCCC)C=CC=C2)[CH:18]=[CH:17][CH:16]=[CH:15]1)[CH2:11][CH2:12][CH3:13].C=C>CO>[CH3:13][CH2:12][CH2:11][CH2:10][C:14]1[CH:15]=[CH:16][CH2:17][C-:18]=1.[CH3:13][CH2:12][CH2:11][CH2:10][C:14]1[CH:15]=[CH:16][CH2:17][C-:18]=1.[Cl-:8].[Cl-:8].[Zr+4:19]

Participants

Conditions

Temperature: 40 °C

Procedure

To a 500 mL four-necked flask equipped with magnetic stirrer was charged 250 mL of toluene. The toluene was heated to 34° C. To this was added a toluene solution of 0.043 g (1.6 mmol) of polymethylaluminoxane composition based on aluminum atoms. Bis(n-butylcyclopentadienyl)zirconium dichloride ((nBu-Cp)2ZrCl2) was added to achieve an Al/Zr mole ratio of 5,000. While raising the temperature to 40° C., ethylene gas was blown in. After 10 minutes, the ethylene gas feed was halted and methanol was introduced to deactivate the catalyst. The polyethylene produced was filtered and dried. The polymerization activity was calculated to be 35×106 g-PE/mol-Zr·atm·hr.

Workup

customTo a 500 mL four-necked flask equipped with magnetic stirrer

Sources & evidence

ORD record: ord-05c0e5419f19417189bce0cdfe4f9a9d
Source dataset: uspto-grants-2013_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08404880B2

Reaction notes

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