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:
Mar. 22, 2011
Filed:
Nov. 15, 2007
Applicants:
Seong Hoon Kang, Daejeon, KR;
IN Kyu Park, Daejeon, KR;
Yeong Dae Kim, Daejeon, KR;
Jong Suh Park, Chungcheongnamdo, KR;
Inventors:
Seong Hoon Kang, Daejeon, KR;
In Kyu Park, Daejeon, KR;
Yeong Dae Kim, Daejeon, KR;
Jong Suh Park, Chungcheongnamdo, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/90 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method for purifying terephthalaldehyde which comprises a first step of dissolving terephthalaldehyde containing impurities in an aromatic solvent at high temperature to prepare a solution; and a second step of quenching the solution to re-crystallize it into terephthalaldehyde. In accordance with the present invention, high pure terephthalaldehyde may be economically prepared.