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:
Feb. 05, 1991
Filed:
Aug. 09, 1989
Applicant:
Inventors:
Thomas Buenemann, Zevenhuizen, NL;
Johannes C Oudejans, Zevenaar, NL;
Pietro Gamba, Cremona, IT;
Aldo Rampi, Cremona, IT;
Assignee:
Unilever Patent Holdings B.V., Rotterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568869 ;
Abstract
The invention provides a process for purifying crude glycerol such as splitters crude, soaplye crude and methanolysis crude which comprises a microfiltration step over a filter material on a ceramic support preferably comprising alumina. Preferably the filter material comprises zirconia and/or alumina. Preferably the process further comprises the step of distillation and/or treatment with ion exchange resins. Also the process may involve a combination of microfiltration and ultrafiltration.