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:
Aug. 05, 1986
Filed:
Sep. 30, 1985
Ross I Wagner, Woodland Hills, CA (US);
Louis R Grant, Los Angeles, CA (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A direct low temperature process for the preparation of pure magnesium borohydride diammoniate or the deuterated analog thereof based on the addition of 90-95% of the stoichiometric amount of NH.sub.3 to an excess of Mg(BH.sub.4).sub.2.X(C.sub.2 H.sub.5).sub.2 O in a benzene reaction solvent in accordance with equation 1: ##STR1## wherein X is a numeral from about 2.0 to about 2.5; or when the reaction is conducted in an ether reaction solvent with the same quantities of reactants and under the same experimental conditions, the triammoniate or the deuterated analog thereof is formed in accordance with equation 2: ##STR2## wherein X is a numeral from about 2.0 to about 2.5. In either case the pure product is readily isolated by filtration, solvent washing to remove excess Mg(BH.sub.4).sub.2.X(C.sub.2 H.sub.5).sub.2 O, and vacuum drying at ambient temperature. Yields are 95-99%; purities are typically about 97%.