C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/381, 402/383
C08F 4/62 (2006.01) C08F 10/00 (2006.01)
Patent
CA 1119152
ABSTRACT OF THE DISCLOSURE An improvement is provided in a process for preparing polyolefins wherein olefins are polymerized or copolymerized in the presence of a catalyst. The improvement resides in using, as the catalyst, a solid com- ponent and an organometallic compound. The solid component is either (A) a substance obtained by the copulverization of (1) a reaction product resulting from a heat reaction of magnesium oxide and aluminum trichloride, at an A1/Mg atomic ratio of from 0.3 to 5 at a temperature of from 150° to 600°C., and (2) a titanium compound and/or a vanadium compound, or (B)a substance obtained by copulverization of (1) a reaction product resul- ting from a heat reaction of magnesium oxide and aluminum trichloride at an Al/Mg atomic ratio of from 0.3 to 5 at a temperature of from 150° to 600°C., (2) at least one of a titanium compound and a vanadium compound, and (3) an organic halide. The polyolefins obtained by this process have a wide molecular weight distribution. In other words, they have a large flow parameter. When such polyolefin is extruded, the molding obtained has superior surface conditions.
305579
Kawamata Etsuo
Kuroda Nobuyuki
Matsuno Mitsuo
Matsuura Kazuo
Miyoshi Mitsuji
Marcus & Associates
Nippon Oil Co. Ltd.
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