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:
May. 11, 1982
Filed:
Aug. 06, 1980
Kazutoyo Uno, Ichihara, JP;
Hisaya Miki, Ichihara, JP;
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Abstract
In a process for recovering a purified ketone substantially free from aldehydes which comprises contacting a crude ketone containing small amounts of aldehydes with an alkali and then distilling the treated crude ketone, the improvement wherein said alkali is a solid alkali composition composed of an alkali metal compound selected from alkali metal oxides and hydroxides, an alkaline earth metal compound selected from alkaline earth metal oxides and hydroxides and silicon dioxide in which the mole ratio of the alkali metal to the alkaline earth metal is in the range of from 1:1 to 1:15, and the mole ratio of the alkali metal to silicon is in the range of from 1:0.25 to 1:5.