Shape-shifted magnesium alkoxide component for polymerizing olefins
First Claim
1. A process for preparing a catalyst component comprising:
- (1) contacting dihydrocarbyloxide magnesium with carbon dioxide in the presence of a slurrying agent to form a magnesium hydrocarbyl carbonate;
(2) adding a filler an average particle size of no greater than 1 μ
m either before or after the duhydrocarbyloxide magnesium is contacted with carbon dioxide;
(3) spray drying the slurry of step (2) to evaporate the slurrying agent and to produce solid particles of magnesium hydrocarbyl carbonate incorporating the filler; and
(4) heating the solid particles to remove carbon dioxide to produce a hydrocarbyloxide magnesium catalyst component having an average particle size from about 5 μ
m to 200 μ
m.
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Accused Products
Abstract
A process is provided for preparing a shape-shifted catalyst component comprising (1) contacting a dihydrocarbyloxide magnesium compound with carbon dioxide in the presence of a slurrying agent to form a slurry of a carboxylated dihydrocarbyloxide magnesium compound; (2) adding a filler to the slurry either before or after the carboxylation of step (1); (3) spray drying the slurry of step (2) to evaporate the slurrying agent and to produce solid particles of the carboxylated dihydrocarbyloxide magnesium compound incorporating the filler; and, optionally, (4) heating the solid particles to remove carbon dioxide to produce a shape-shifted dihydrocarbyloxide magnesium compound component. A catalyst system using the component and a polymerization process employing the catalyst system are also provided.
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Citations
7 Claims
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1. A process for preparing a catalyst component comprising:
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(1) contacting dihydrocarbyloxide magnesium with carbon dioxide in the presence of a slurrying agent to form a magnesium hydrocarbyl carbonate; (2) adding a filler an average particle size of no greater than 1 μ
m either before or after the duhydrocarbyloxide magnesium is contacted with carbon dioxide;(3) spray drying the slurry of step (2) to evaporate the slurrying agent and to produce solid particles of magnesium hydrocarbyl carbonate incorporating the filler; and (4) heating the solid particles to remove carbon dioxide to produce a hydrocarbyloxide magnesium catalyst component having an average particle size from about 5 μ
m to 200 μ
m. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification