The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 2010
Filed:
Jan. 31, 2007
Yoshitaka Kobayashi, Ichihara, JP;
Takanori Nakashima, Ichihara, JP;
Yuusuke Yamada, Ichihara, JP;
Iku Kouzai, Yokkaichi, JP;
Youichi Maeda, Yokkaichi, JP;
Kouji Nakayama, Yokkaichi, JP;
Keiji Fukuda, Yokkaichi, JP;
Yoshitaka Kobayashi, Ichihara, JP;
Takanori Nakashima, Ichihara, JP;
Yuusuke Yamada, Ichihara, JP;
Iku Kouzai, Yokkaichi, JP;
Youichi Maeda, Yokkaichi, JP;
Kouji Nakayama, Yokkaichi, JP;
Keiji Fukuda, Yokkaichi, JP;
Japan Polypropylene Corporation, Tokyo, JP;
Abstract
Disclosed is a production method of polypropylene having high MFR value and excellent product qualities with high productivity. The method enables to produce a propylene polymer by a gas phase process where the reaction heat is removed mainly by the heat of vaporization of liquefied propylene. The method is characterized by using a solid catalyst component (A) which is prepared by contacting components (A1), (A2) and (A3) shown below. Further disclosed are: a propylene polymer produced by the method; a propylene polymer composition; and a molded body of the composition. Component (A1): a solid component containing titanium, magnesium and a halogen as essential components. Component (A2): a vinyl silane compound. Component (A3): an organosilicon compound having an alkoxy group (A3a) and/or a compound having at least two ether bonds (A3b).