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. 19, 2009
Filed:
Aug. 05, 2008
Applicants:
Rajiv Manohar Banavali, Rydal, PA (US);
Robert Tryon Hanlon, Philadelphia, PA (US);
Alfred Karl Schultz, Maple Glen, PA (US);
Inventors:
Rajiv Manohar Banavali, Rydal, PA (US);
Robert Tryon Hanlon, Philadelphia, PA (US);
Alfred Karl Schultz, Maple Glen, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/74 (2006.01); C07C 29/76 (2006.01); C07C 29/80 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for purification of crude glycerol, especially crude glycerol derived from biodiesel production using alkaline catalysts. The method comprises combining the crude glycerol with acid, separating a glycerol layer, and treating the glycerol layer to decolorize it.