Large-pole polyolefin, a method for its production and a procata

Details Large-pole polyolefin, a method for its production and a procata Large-pole polyolefin, a method for its production and a procata

1995-05-01

1998-01-20

Nagumo, Mark

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526351, 5261253, 5261256, 5261246, 502107, 502127, C08F21000, C08F 4654

Patent

active

057102295

ABSTRACT:
The invention relates to a method for preparing polyolefins by polymerizing an olefin with a procatalyst composition prepared by bringing together MgCl.sub.2, a lower alcohol, a titanium compound and a phthalic acid ester. The invention also relates to a polyolefin obtained by polymerizing an olefin in the presence of a procatalyst prepared by bringing together MgCl.sub.2, a lower alcohol, a titanium compound and a phthalic acid ester, as well as to a procatalyst composition suitable for the preparation of a large-pore polyolefin, which composition has been prepared by bringing together MgCl.sub.2, a lower alcohol, a titanium compound and a phthalic acid ester.

REFERENCES:
patent: 4442276 (1984-04-01), Kashiwa et al.
patent: 4473660 (1984-09-01), Albizzati et al.
patent: 4761461 (1988-08-01), Jaggard et al.
patent: 4829034 (1989-05-01), Iiskolan et al.
patent: 5234879 (1993-08-01), Garoff et al.
patent: 5360776 (1994-11-01), Iiskola et al.

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