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:
May. 27, 2014
Filed:
Nov. 05, 2010
Takanori Nakashima, Yokkaichi, JP;
Katsuhiko Oono, Yokkaichi, JP;
Kenji Mitsutani, Yokkaichi, JP;
Takao Tayano, Yokkaichi, JP;
Tomoyuki Yoshida, Yokkaichi, JP;
Shigeo Mizukami, Yokkaichi, JP;
Yusuke Yamada, Yokkaichi, JP;
Takanori Nakashima, Yokkaichi, JP;
Katsuhiko Oono, Yokkaichi, JP;
Kenji Mitsutani, Yokkaichi, JP;
Takao Tayano, Yokkaichi, JP;
Tomoyuki Yoshida, Yokkaichi, JP;
Shigeo Mizukami, Yokkaichi, JP;
Yusuke Yamada, Yokkaichi, JP;
Japan Polypropylene Corporation, Tokyo, JP;
Abstract
A propylene polymerization reaction apparatus and a production method of a propylene-based polymer are capable of producing a continuous multi-stage polymer in low cost, high productivity and stably, and significantly reducing generation amount of an off-specification product accompanying change of polymerization condition, in multi-stage continuous vapor phase polymerization method of a propylene-based polymer using a catalyst for olefin polymerization. A reaction apparatus for producing a propylene-based polymer by a multi-stage continuous vapor phase polymerization method is used. One or more reactor of a horizontal-type reactor having inside a stirring machine which rotates around a horizontal axis, and a continuous stirred tank reactor to be connected to the horizontal-type reactor are provided, and a production method of a propylene-based polymer using the same.