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:
Nov. 23, 1993
Filed:
Aug. 20, 1992
Applicant:
Inventors:
Masashi Inaba, Yokkaichi, JP;
Yoshikazu Higaki, Yokkaichi, JP;
Kimikatsu Jinno, Yokkaichi, JP;
Mitsugi Kataoka, Yokkaichi, JP;
Norio Sato, Yokkaichi, JP;
Masayuki Honda, Yokkaichi, JP;
Assignee:
Mitsubishi Petrochemical Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
203 39 ; 203 43 ; 203 96 ; 203 97 ; 203 98 ; 203 93 ; 203 94 ; 203 99 ; 203D / ; 203D / ; 568749 ; 568916 ; 568918 ;
Abstract
A method of continuously distilling off the components of a mixture containing phenols, water and methanol using a single distillation column, wherein methanol is recovered from the top of the column, water containing phenols is dragged as a side stream from a recovery section of the column, and phenols are recovered as a bottom product. The method permits efficient separation by the single distillation column of the three components with high purity and low utility energy.