| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for stably and efficiently producing a propylenic polymer free from the problem of a fish eye and having a wide molecular weight distribution with the use of a Ziegler type solid catalyst component containing titanium, magnesium and halogen as essential components. SOLUTION: The method for producing the propylenic polymer has a continuous polymerization process in which two or more reaction vessels in which bulk polymerization is carried out are connected. In the process, the Ziegler type solid catalyst component (a) is used which is obtained by contact of (A) a raw material solid component containing titanium, magnesium and halogen, (B) an organosilicon compound containing two or more Si-OR<SP>1</SP>bonds, and (C) an organometallic compound of a group I-III metal of the periodic table, the catalyst component (a), an organoaluminum compound (b), hydrogen and propylene are fed into a first vessel, and hydrogen is fed into a second vessel, wherein≥90% of hydrogen fed in bulk polymerization is fed into the first vessel and a production ratio between a propylenic polymer in the first vessel and that in the second vessel is 20/80 to 80/20. COPYRIGHT: (C)2010,JPO&INPIT
|
