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. 26, 2008
Filed:
Dec. 13, 2006
Jong Hyun Chae, Daejeon, KR;
Won Ho Lee, Daejeon, KR;
Dong IL Lee, Gyeonggi-do, KR;
IN Kyu Park, Daejeon, KR;
Yong Jin Choe, Daejeon, KR;
Sung Kyu Lee, Daejeon, KR;
Yeong Dae Kim, Daejeon, KR;
Jong Suh Park, Chungnam, KR;
Seong Hoon Kang, Daejeon, KR;
Jong Hyun Chae, Daejeon, KR;
Won Ho Lee, Daejeon, KR;
Dong Il Lee, Gyeonggi-do, KR;
In Kyu Park, Daejeon, KR;
Yong Jin Choe, Daejeon, KR;
Sung Kyu Lee, Daejeon, KR;
Yeong Dae Kim, Daejeon, KR;
Jong Suh Park, Chungnam, KR;
Seong Hoon Kang, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention relates to a method for preparing an aromatic dialdehyde, comprising, a) a step of gas phase oxidation reaction for preparing aromatic dialdehyde from dimethyl benzene; b) a step of separation for selectively recovering crude aromatic dialdehyde of molten phase from the reaction product of the step (a); and c) a step of purification for obtaining highly pure aromatic dialdehyde by purifying said crude aromatic dialdehyde, and a manufacturing system used for the preparation method. The method for preparation of the aromatic dialdehyde according to the present invention is simple, effective, and advantageous in that highly pure aromatic dialdehyde can be continuously prepared.