Process for polymerizing or copolymerizing olefins

Details Process for polymerizing or copolymerizing olefins Process for polymerizing or copolymerizing olefins

1975-07-28

1978-01-31

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, 252429C, 526125, 526127, 526128, 526352, C08F 402, C08F 1002

Patent

active

040716724

ABSTRACT:
In a process for polymerizing or copolymerizing olefins in the presence of a catalyst composed of (a) a transition metal catalyst component prepared by reacting a titanium or vanadium compound and a solid carrier of a magnesium compound and (b) an organometallic compound catalyst component of a metal of groups I to III of the periodic table; the improvement wherein said transition metal catalyst component is a reaction product of a solid carrier which is an adduct formed between a magnesium dihalide and an electron donor, a compound of Si or Sn selected from the group consisting of their halogen and organohalogen compounds and a titanium or vanadium compound.

REFERENCES:
patent: 3642746 (1972-02-01), Kashiwa et al.

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