Process for preparing polyolefins

Details Process for preparing polyolefins Process for preparing polyolefins

1976-12-20

1978-05-09

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429C, 252430, 526 97, 526124, 526129, 526132, 526156, 526352, C08F 402, C08F 1002

Patent

active

040888126

ABSTRACT:
This invention discloses an improved catalyst for the polymerization or copolymerization of olefins, and a process for preparing polyolefins which comprises polymerizing or copolymerizing olefins using the said catalyst. According to the invention there is provided a process for preparing polyolefins by polymerizing or copolymerizing olefins using as a catalyst at least one compound selected from the group consisting of a titanium compound and a vanadium compound supported on a solid carrier, and an organometallic compound, said solid carrier comprising a product obtained by treatment with SO.sub.3 of at least one member selected from the group consisting of an oxide of Group II-IV metals of the Periodic Table and a double oxide of the said oxide and other oxide, which other oxide may be another oxide of Group II-IV metals of the Periodic Table or may be an oxide of other Group metals of the same Table.

REFERENCES:
patent: 2345655 (1944-04-01), Brandenburg
patent: 3705886 (1972-12-01), Kashiwa et al.

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