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:
Dec. 27, 2016
Filed:
May. 22, 2012
Stephen R. Schmidt, Silver Spring, MD (US);
Meenakshi S. Krishnamoorthy, Columbia, MD (US);
Manoj M. Koranne, Clarksville, MD (US);
Heiko Morell, Rodgau, DE;
Jochen G. Metzger, Worms, DE;
Stephen R. Schmidt, Silver Spring, MD (US);
Meenakshi S. Krishnamoorthy, Columbia, MD (US);
Manoj M. Koranne, Clarksville, MD (US);
Heiko Morell, Rodgau, DE;
Jochen G. Metzger, Worms, DE;
W. R. Grace & Co.-Conn., Columbia, MD (US);
Abstract
The process of this invention removes impurities from transesterification products comprising primarily fatty acid alkyl esters (FAAE) that are being processed for final fuel products, such as biodiesel. The inventive process is catalytic, and the resulting ester is suitable for use as biodiesel. Metal oxide and mixed metal oxide catalysts are particularly suitable. The invention is particularly suitable for treating fatty acid alkyl ester compositions comprising impurities such as glycerin, sterol glycosides, and/or triglyceride, diglyceride and/or monoglyceride. The invention is particularly useful in treating FAAE transesterification products made using homogeneous alkali catalysts. The treated ester exhibits improved performance under cold weather conditions, which can be measured by methods such as ASTM 7501 Cold Soak Filtration Test (CSFT).