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. 28, 2013
Filed:
Sep. 19, 2007
Hirofumi Ito, Mito, JP;
Jiro Yoshida, Yokohama, JP;
Shuichi Funatsu, Yokohama, JP;
Koji Ooyama, Yokohama, JP;
Nobuyasu Chikamatsu, Yokohama, JP;
Hirofumi Ito, Mito, JP;
Jiro Yoshida, Yokohama, JP;
Shuichi Funatsu, Yokohama, JP;
Koji Ooyama, Yokohama, JP;
Nobuyasu Chikamatsu, Yokohama, JP;
JGC Corporation, Tokyo, JP;
Abstract
A process for producing propylene, which including feeding at least one of dimethyl ether and methanol to a reactor to be reacted in the presence of a catalyst; supplying an obtained reaction product to a separator by which low-boiling compounds having a boiling point of −50° C. or lower at atmospheric pressure among the reaction product are separated; and recycling a proportion of at least 70% of a total amount of the separated low-boiling compounds to said reactor.