Polymerization of olefins

Details Polymerization of olefins Polymerization of olefins

1983-09-09

1988-01-12

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526113, 526118, 526119, 526120, 526122, 526125, 526123, 526352, 526904, C08F 402, C08F 464

Patent

active

047192712

ABSTRACT:
A catalyst, a process of forming the catalyst, and polymerizing at least one alpha-olefin with the catalyst, said catalyst produced by precipitating a composition from a solution of a metal halide, for example, magnesium dihalide, and a transition metal compound, for example, titanium tetraalkoxide, in the presence of a particulate diluent, for example, polymeric fibrils, with an agent selected from among specified organometallic compounds, metal halides and oxygen-containing metal halides, hydrogen halides and organic acid halides. The composition is preferably further treated with a halide ion exchanging source, for example, titanium tetrahalide to form a particularly active catalyst. The catalyst is preferably used in combination with a cocatalyst comprising a metal hydride of organometallic compound selected from an element of Periodic Groups IA, IIA and IIIA.

REFERENCES:
patent: 4384087 (1983-05-01), Capshew
patent: 4405769 (1983-09-01), Capshew et al.
patent: 4427573 (1984-01-01), Miles et al.

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