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:
May. 30, 1995
Filed:
Aug. 31, 1994
Applicant:
Inventors:
Kuen-Wai Chiu, Wexford, PA (US);
David H Ellenberger, Fenelton, PA (US);
Joseph M Barendt, Mars, PA (US);
Assignee:
Mine Safety Appliances Company, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556412 ;
Abstract
A one-step synthesis of an alkali-metal hexamethyldisilazane is provided in which an alkali metal selected from the group consisting of lithium, sodium and potassium is reacted with 1,1,1,3,3,3,-hexamethyldisilazane at a reaction temperature above the melting point of the alkali metal without the use of an electron carrier, alkali-metal derivatized reagents, such as alkyl-aryl organometals, alkali-metal amides and alkali-metal hydrides, or a catalyst.