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:
Nov. 12, 1996
Filed:
Sep. 23, 1994
Wilfried Weiss, Oberursel, DE;
Ulrich Wietelmann, Friedrichsdorf, DE;
Uwe Lischka, Frankfurt am Main, DE;
Ute Emmel, Frankfurt am Main, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
The method of making the stable non-pyrophoric solution containing a lithium diorganoamide of the formula, LiNR'R' wherein R' and R' each have from 2 to 6 carbon atoms, in an inert liquid hydrocarbon solvent includes mixing a secondary amine including the R' and R' groups and an alcohol having 3 to 6 carbon atoms with a lithium granulate or powder in the hydrocarbon solvent and reacting the secondary amine, the alcohol and the lithium with addition of an electron acceptor compound, advantageously styrene or isobutene, to form the stable non-pyrophoric solution containing the lithium diorganoamide and a lithium alkoxide having 3 to 6 carbon atoms.