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:
Mar. 10, 2009
Filed:
Aug. 23, 2005
Applicants:
Ute Emmel, Frankfurt am Main, DE;
Peter Rittmeyer, Sulzbach/Taunus, DE;
Ulrich Wietelmann, Friedrichsdorf, DE;
Rainer Aul, Rodgau, DE;
Inventors:
Ute Emmel, Frankfurt am Main, DE;
Peter Rittmeyer, Sulzbach/Taunus, DE;
Ulrich Wietelmann, Friedrichsdorf, DE;
Rainer Aul, Rodgau, DE;
Assignee:
Chemetall GmbH, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 3/00 (2006.01); C07F 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A synthesis agent containing methyllithium and lithium bromide is described, in which MeLi and LiBr are dissolved in a solvent of the general formula (I) wherein Rand Rindependently of one another are H, methyl (Me) or ethyl (Et), and Rand Rare Me or Et,the molar ratio of LiBr to MeLi being at least 0.7 and not more than 1.5 and the methyllithium concentration being at least 4 wt. %.