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. 16, 1979
Filed:
Feb. 21, 1978
Applicant:
Inventor:
Brian J Ozero, New York, NY (US);
Assignee:
Halcon Research & Development Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; C07D / ;
U.S. Cl.
CPC ...
203 75 ; 203 82 ; 203 98 ; 203 99 ; 203D / ; 26034837 ;
Abstract
A process for the recovery of ethylene oxide containing low levels of aldehydic impurities from an impure aqueous ethylene oxide solution containing the same is provided in which the impure solution is treated in a novel multi-stage, countercurrent distillation zone for improved separation of said aldehydic impurities and recovery of an ethylene oxide-containing product stream having the desired low concentration of aldehydic impurities.