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:
Aug. 23, 2016
Filed:
Oct. 22, 2007
Hiroki Emoto, Kurashiki, JP;
Kei Yoshizuru, Kurashiki, JP;
Hiroki Emoto, Kurashiki, JP;
Kei Yoshizuru, Kurashiki, JP;
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Abstract
A method of producing an α-olefin low polymer, wherein an α-olefin is subjected to low polymerization in a solvent in the presence of a chromium catalyst and at least one inert gas. The proportion of the inert gas is maintained from 0.010 to 50.00% by volume in a gas phase part of a reactor, such that inert gas is discharged from the reactor and/or circulation piping when the proportion exceeds 50.00%. The chromium catalyst contains a chromium compound, at least one nitrogen-containing compound, an aluminum-containing compound, and optionally a halogen-containing compound. Unreacted α-olefin and solvent separated from a reaction liquid are circulated back into the reactor.