Process for preparing polyolefins

Details Process for preparing polyolefins Process for preparing polyolefins

C - Chemistry, Metallurgy

08

F

402/638, 402/645

C08F 10/02 (2006.01) C08F 4/02 (2006.01) C08F 4/08 (2006.01) C08F 4/16 (2006.01) C08F 4/20 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1042144

ABSTRACT OF THE DISCLOSURE A process is provided for preparing polyolefins using an improved polymerization catalytic agent. The polyolefins are provided by polymerizing or copolymerizing olefins using as a catalytic agent an organometallic ?ompound of a metal of Group I-IV of the Periodic Table, and a catalyst one selected from the group consisting of [1] a substance obtained by copulverizing in an inert gas atmosphere (A) a magnesium dihalide, (B) an aluminum compound represented by the general formula Al(OR)3 wherein R is a hydrocarbon radical and may be the same or different, and (C) a tetravalent titanium compound; and [II] a substance obtained by copulverizing in an inert gas atmosphere the aboved described (A) and (B) as well as (D) a solid titanium compound and/or vanadium compound. The use of such catalyst provides a process which is extremely economical, and provides a polymer whose bulk density is high.

210923

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