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:
Oct. 21, 1997
Filed:
Oct. 22, 1996
Applicant:
Inventors:
Mark J Hintze, Charlotte, NC (US);
Wen Jing Quan, Gastonia, NC (US);
Assignee:
Cyprus Foote Mineral Company, Kings Mountain, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564-2 ; 564463 ;
Abstract
Lithium diorganoamide compositions are prepared in ethers with an ether to diorganoamide mole ratio of from about 2.0 to about 5.0. These compositions have enough thermal stability generally due to the addition of stabilizers that the decomposition rate for lithium diorganoamide is less than 0.20% per day. Preferred stabilizers are LiBr, LiCl, LiI or Li-tert-butoxide, or combinations thereof. A preferred diorganoamide is lithium diisopropylamide.