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. 13, 2001
Filed:
Jun. 11, 1999
Applicant:
Inventors:
Jung-Uk Choi, Daejeon, KR;
Seong-Moon Jung, Daejeon, KR;
Kee-Hyouk Lee, Daejeon, KR;
Ji-Joong Moon, Daejeon, KR;
Young-Jin Kim, Daejeon, KR;
Kwang-Ik Moon, Kyongju-shi, KR;
Assignee:
LG Chemical Limited, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 3/118 ;
U.S. Cl.
CPC ...
C07C 3/118 ;
Abstract
A neopentyl glycol having a purity of 98% or more is produced continuously by a process comprising the steps of: conducting an aldol condensation of isobutyraldehyde with an aqueous formaldehyde solution containing methanol in an amount of 0.1 to 15 wt % in the presence of a tertiary alkylamine catalyst; extracting the condensation product mixture with octanol; distilling the extract; hydrogenating the distillation product; extracting the hydrogenation product mixture with water; and subjecting the extract to distillation.