Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1991-10-11
1993-10-19
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502103, 502117, 502125, 526153, C08F 4642
Patent
active
052545172
ABSTRACT:
This invention relates to a catalyst system using a diethylaluminum alkoxide-aluminum alkyl cocatalyst and to a process for polymerization of olefins using the catalyst system. Use of this catalyst system increases polymerization yield. The diethylaluminum alkoxide is preferably diethylaluminum ethoxide and the aluminum alkyl is preferably triethyl aluminum. The mole-to-mole ratio of diethylaluminum alkoxide to aluminum alkyl ranges from 0.05 to 0.2. This invention is effective for the aluminum/transition metal ratio for the polymerization of olefins ranges from about 100 to about 500. Polymerization yield increases of greater than 10% are realized.
REFERENCES:
patent: 3784539 (1974-01-01), Ort
patent: 4399055 (1983-08-01), Matsuura et al.
patent: 4985515 (1991-01-01), Matsuura et al.
Malbari Shabbir
Rauscher David J.
Shamsoum Edwar S.
Cheairs M. Norwood
Fina Technology, Inc.
Garvin Patrick P.
Wheelington Jim D.
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