C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
252/109
C08F 4/16 (2006.01) C08F 10/00 (2006.01)
Patent
CA 2025297
- 18 - ABSTRACT OF THE DISCLOSURE METHOD FOR THE PREPARATION OF A STABILIZED CATALYST FOR THE POLYMERIZATON OF OLEFINS A so-called Ziegler catalyst composed of a titanium halide-containing solid ingredient and an organoaluminum compound for the polymerization of olefins can be imparted with greatly improved storage stability by first subjecting the catalytic composition to a pre-polymerization treatment and then to a contacting treatment with carbon dioxide and/or carbon monoxide. The catalytic activity is almost unchanged even after storage of the stabilizedf catalyst for 90 days or longer in nitrogen gas. The stabilized catalyst can also be used advantageously in a continuous-process polymerization of propylene by continuously introducing the monomer carrying the catalyst owing to absence of blocking of the pipe line with the polymer formed in-line.
Funabashi Hideo
Iwasaki Shigeo
Matsuo Yoichi
Idemitsu Petrochemical Company Limited
Kirby Eades Gale Baker
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