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:
Apr. 07, 1987
Filed:
Oct. 26, 1984
Rolf Brockmann, Langenfeld, DE;
Lutz Jeromin, Hilden, DE;
Wilhelm Johannisbauer, Erkrath, DE;
Helmut Meyer, Duesseldorf-Benrath, DE;
Otto Michel, Langenfeld, DE;
Juergen Plachenka, Mettmann, DE;
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;
Abstract
An improved process for purification of glycerol obtained from natural sources comprising alkalizing a glycerol-containing crude mixture in the presence of air for oxidation, evaporating the mixture in a thin-layer evaporator with redistillation of the residue, rectification and reevaporation in a packed column characterized by low-pressure-loss plates with a falling-film evaporator designed for internal and external partial condensation and to separate off unwanted constituents of the mixture, bleaching the product with activated carbon and separating the bleach in known manner.