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:
Sep. 14, 1982
Filed:
Feb. 03, 1981
Applicant:
Inventors:
Assignee:
Mitsui Petrochemical Industries Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203 70 ; 568750 ;
Abstract
In a process for separating at least two alkyl phenols having close boiling points by azeotropic distillation of a mixture composed of the alkyl phenols with a hydrocarbon azeotroping agent, the improvement wherein said hydrocarbon azeotroping agent is selected from saturated aliphatic hydrocarbons of 9 to 13 carbon atoms having a boiling point of 150.degree. to 190.degree. C. at 760 mmHg.