Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1980-06-17
1981-10-20
Konopka, P. E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252429R, 252429B, 526125, 526127, 526128, C08F 402, C08F 464, C08F 1002, C08F 1006
Patent
active
042959926
ABSTRACT:
A catalyst for the polymerization of olefins is prepared by the reaction of an aliphatic alcohol such as n-propyl alcohol with a mixture of an alkyl magnesium compound such as n-butyl, sec-butyl magnesium and a silicon tetrahalide such as SiCl.sub.4. After washing the precipitate several times with a hydrocarbon such as hexane, it is suspended in a hydrocarbon such as hexane and an organic titanium compound such as TiCl.sub.4 is added after which a suitable reducing agent such as diethyl aluminum chloride is added. The thus formed solid catalyst is washed several times with a hydrocarbon solvent such as hexane.
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patent: 4115319 (1978-09-01), Scata et al.
patent: 4120820 (1978-10-01), Birkelbach
Carter J. G.
Konopka P. E.
The Dow Chemical Company
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