Support, catalyst and process for polymerizing olefins

Details Support, catalyst and process for polymerizing olefins Support, catalyst and process for polymerizing olefins

1980-06-17

1981-08-11

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 526125, 526128, 526352, C08F 402, C08F 1002

Patent

active

042835151

ABSTRACT:
Olefins are polymerized in the presence of a catalyst which is prepared by the controlled reaction of an aliphatic alcohol such as n-propyl alcohol and 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 a 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.

REFERENCES:
patent: 3644318 (1972-02-01), Diedrich et al.
patent: 4071672 (1978-01-01), Kashiwa
patent: 4115319 (1978-09-01), Scata et al.

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