Olefin polymerization catalyst composition
First Claim
1. A solid magnesium halide/titanium halide catalyst component containing no carbonate magnesium compound useful for the polymerization of alphaolefins which has been obtained by(a) heating a carbonated magnesium compound of the formula MgR'"'"'R"xCO2 wherein R'"'"' is an alkoxide or aryloxide group, R" is an alkoxide group, aryloxide group or halogen, and x has a value between about 0.1 and 2.0 to a temperature above 100°
- C. for a period of time sufficient to cause complete loss of CO2 ;
(b) contacting the resulting product with a halide of tetravalent titantium in the presence of a halohydrocarbon and an electron donor;
(c) contacting the resulting halogenated product with a tetravalent titanium halide;
(d) washing the resulting product to remove unreacted titanium compounds; and
(e) recovering the solid product.
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Accused Products
Abstract
Olefin polymerization catalyst components having improved activity and morphological properties are disclosed and claimed. In particular, the components are prepared by reacting a carbonized magnesium alkoxide or aryloxide component with a halogenated tetravalent titanium component, a halohydrocarbon component and an electron donor.
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Citations
14 Claims
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1. A solid magnesium halide/titanium halide catalyst component containing no carbonate magnesium compound useful for the polymerization of alphaolefins which has been obtained by
(a) heating a carbonated magnesium compound of the formula MgR'"'"'R"xCO2 wherein R'"'"' is an alkoxide or aryloxide group, R" is an alkoxide group, aryloxide group or halogen, and x has a value between about 0.1 and 2.0 to a temperature above 100° - C. for a period of time sufficient to cause complete loss of CO2 ;
(b) contacting the resulting product with a halide of tetravalent titantium in the presence of a halohydrocarbon and an electron donor; (c) contacting the resulting halogenated product with a tetravalent titanium halide; (d) washing the resulting product to remove unreacted titanium compounds; and (e) recovering the solid product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- C. for a period of time sufficient to cause complete loss of CO2 ;
Specification