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:
Jan. 14, 2020
Filed:
Nov. 10, 2017
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 37/78 (2006.01); C07C 39/04 (2006.01); B01D 3/32 (2006.01); B01D 3/36 (2006.01); C07C 45/84 (2006.01);
U.S. Cl.
CPC ...
C07C 37/78 (2013.01); B01D 3/32 (2013.01); B01D 3/36 (2013.01); C07C 39/04 (2013.01); C07C 45/84 (2013.01); B01D 2257/70 (2013.01);
Abstract
The present invention relates to a method for purifying phenol, which comprises: supplying a feed comprising phenol, acetone, hydroxyacetone and water to a distillation column at 60° C. to 95° C.; separating the feed into a first fraction, which comprises the acetone, and separates to the upper part of the distillation column and a second fraction, which comprises the phenol, and separates to the lower part of the distillation column; and recovering the first fraction and the second fraction, respectively.