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. 06, 2019
Filed:
May. 22, 2015
Airbus Safran Launchers Sas, Issy-les-Moulineaux, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Universite Claude Bernard Lyon I, Villeurbanne, FR;
AIRBUS SAFRAN LAUNCHERS SAS, Issy-les-Moulineaux, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
UNIVERSITE CLAUDE BERNARD LYON I, Villeurbanne, FR;
Abstract
A process for obtaining borazane (NH—BH) includes introducing anhydrous liquid ammonia (NH(l)) into a reactor thermostatically regulated to between a temperature θand 40° C.; introducing, with stirring, into the reactor an amine borane complex (Am.BH), the corresponding amine (Am) of which is soluble in anhydrous liquid ammonia only to a proportion of less than 10 g in 100 g of ammonia at 20° C., being introduced in an amount such that the mole ratio R=(NH(l))/(Am.BH) is greater than or equal to 5; stirring the mixture; stopping the stirring to obtain two demixed phases: a light phase constituted essentially of a solution of anhydrous liquid ammonia (NH(l)) containing borazane; and a heavy phase constituted essentially of the amine corresponding to the amine borane complex introduced; isolating the borazane and drying under vacuum thereof; the temperature θbeing greater than or equal to the melting point of the amine borane complex.