気相流動床反応器内における有機遷移金属化合物存在下での高分子量ポリオレフィンの製造

Japanese Patent JP2006522189

A

Process for preparing polyolefins having high molecular weights in the presence of a catalyst comprising an organic transition metal compound in a gas-phase fluidized-bed reactor, where the polyolefins prepared have a melt flow rate at 2.16 kg and 190° C. in accordance with ISO 1133 of less than 4 g/10 min. According to the present invention, a start-up phase during which a polyolefin having an increased melt flow rate of above 4 g/10 min is produced for a transitional period is provided. In this way, trouble-free start-up of the reactor is ensured even in the case of polymer products having a high molecular weight and a melt flow rate below 4 g/10 min and even when using catalysts based on organic transition metal compounds, in particular metallocene catalysts.

WO/2007/147714	MAGNESIUM CHLOROALKOLATE-BASED CATALYST PRECURSORS
JP3845532	CATALYST FOR OLEFINIC POLYMERIZATION AND PREPARATION OF OLEFINIC POLYMER THEREWITH
JP2962841	INDUSTRIAL APPLICABILITY [Invention title] Polymerization component and catalyst of olefin

Kepple, alexander
Curry, liner
Ulrich, Nienken

JP2006504946A

September 28, 2006

April 01, 2004

Click for automatic bibliography generation  

Basel, Polyolefin, Game Beher

C08F10/00; C08F2/00; C08F2/01; C08F2/38; C08F4/642; C08F210/16

Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shinya Hosokawa

Previous Patent: 微細な充填材の水性スラリー、その製法および充填材含有紙を製造するた�...

Next Patent: エレクトロステリックに安定化されたポリウレタン樹脂、その製法及びそ�...