Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Reexamination Certificate
2005-01-04
2005-01-04
Lipman, Bernard (Department: 1713)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
Reexamination Certificate
active
06838412
ABSTRACT:
An α-olefin polymerization catalyst comprising (A) a solid catalyst component containing a titanium compound obtained by treating a solid product having a titanium content of 1.5% by weight or less obtained by reducing Ti(OR1)aX4-n(R1represents a hydrocarbon group having 1 to 20 carbon atoms, X represents a halogen atom and a represents a number satisfying 0<a≦4.) with an organomagnesium compound in the presence of an organosilicon compound having an Si—O bond and an ester compound, with an ester compound, and treating the ester-treated solid with a mixture of an ether compound and titanium tetrachloride or a mixture of an ether compound, titanium tetrachloride and an ester compound, (B) an organoaluminum compound and (C) an electron donative compound, and a process for producing an α-olefin polymer with said α-olefin polymerization catalyst.
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Fujiwara Yasuki
Imai Akio
Satoh Makoto
Lipman Bernard
Steven, Davis, Miller & Mosher L.L.P.
Sumitomo Chemical Company Limited
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