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. 05, 2006
Filed:
Jun. 21, 2002
Applicants:
Christian Wulff, Mannheim, DE;
Stefan Orsten, Ellerstadt, DE;
Alfred Oftring, Bad Dürkheim, DE;
Peter Zehner, Ludwigshafen, DE;
Inventors:
Christian Wulff, Mannheim, DE;
Stefan Orsten, Ellerstadt, DE;
Alfred Oftring, Bad Dürkheim, DE;
Peter Zehner, Ludwigshafen, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F 9/22 (2006.01); C07F 9/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for preparing N-phosphono-methylglycine by reacting a hexahydrotriazine compound with a triacyl phosphite in an organic solvent, hydrolyzing the resulting phosphono compound after prior extraction into an aqueous phase and separation from the organic phase. The process avoids decomposition of the organic solvent during hydrolysis.