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US 4,308,170 AGranted
Titanium catalyst for the polymerization of olefins
AssigneeIdemitsu Kosan Co., Ltd.
InventorsShigeyoshi Mizogami, Satoshi Asahi, Yasuhiro Takeshita
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AssigneeIdemitsu Kosan Co., Ltd.
InventorsShigeyoshi Mizogami, Satoshi Asahi, Yasuhiro Takeshita
Estimating the term…
A process for producing an improved titanium catalyst for use in the polymerization of olefins comprising heating a magnesium dialkoxide and an alcohol adduct of a magnesium dihalide to form a solid product, treating said solid product with an alcohol to form an alcohol treated solid product, and then reacting said alcohol treated solid product with a halogen-containing titanium compound. The reaction product of said alcohol treated solid product with the halogen-containing titanium compound may optionally be reacted with an organoaluminum compound. The products of the processes described in the preceding two sentences is an improved titanium catalyst which is generally used with an organoaluminum olefin polymerization cocatalyst.
A process for producing an improved titanium catalyst for use in the polymerization of olefins comprising heating a magnesium dialkoxide and an alcohol adduct of a magnesium dihalide at a temperature of from about 100.degree. C. to 200.degree. C. under reduced pressure to form a solid product, treating said solid product with an alcohol at a temperature of between 0.degree. C. and 200.degree. C. for between about 5 minutes and 5 hours to form an alcohol treated solid product, and then reacting said alcohol treated solid product with a titanium compound containing at least on halogen atom directly bonded to a titanium atom at a temperature of from about 0.degree. C. to 200.degree. C. for a period of from about 5 minutes to about 10 hours.
Dependencies are inferred from the claim text.