C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/434, 402/438
C08F 4/62 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01)
Patent
CA 1085811
ABSTRACT OF THE DISCLOSURE A process is provided for preparing polyolefins. The process comprises polymerizing or copolymerizing an olefins or olefins using, an a novel catalyst, a transition metal compound component and an organometallic compound of groups I- IV of the Periodic Table. The transition metal compound component is a substance which is obtained by contacting the following compounds (1) and (2), namely: (1) a compound which is obtained by reacting an organomagnesium compound represented by the general formula RMgX, wherein R is an alkyl or aryl group having 1 to 20 carbon atoms and X is a halogen, with an alum- inum compound represented by the general formula A1R'nX3-n, wherein R' is an alkyl or aryl group having 1 to 20 carbon atoms, X is halogen and n is 0 ? n ? 3, and subsequently re- acting that reaction product with a hydroxy compound represented by the general formula R"OH wherein R" is a hydrocarbon radical having 1 to 20 carbon atoms; and (2) a titanium compound and/ or a vanadium compound. By this process, the olefin polymer- ization or copolymerization proceeds with a remarkably high activity of the catalyst. The bulk density of the resulting polymer is remarkable high. Moreover, a polymer having a high merit index can be prepared at a lower hydrogen concentration than heretofore.
269137
Kuroda Nobuyuki
Matsuno Mitsuo
Matsuura Kazuo
Miyoshi Mituji
Marcus & Associates
Nippon Oil Co. Ltd.
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