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. 30, 1993
Filed:
Jul. 10, 1992
Michael L Levinthal, Marshall, TX (US);
Rodney L Willer, Newark, DE (US);
Dennis J Park, Newark, DE (US);
Ronnelle Bridges, Hallsville, TX (US);
Thiokol Corporation, Ogden, UT (US);
Abstract
The present invention pertains to a method for making energetic oxidizer salts and solutions thereof, and in particular relates to processes for making aqueous solutions of hydroxylammonium nitrate in high purity suitable for use in making liquid gun propellants. The present alcohol-free process yields high purity alcohol-free hydroxylammonium nitrate in a simple chemical neutralization reaction by combining an aqueous nitric acid solution 120 to 70 wt. %) with an alcohol-free aqueous hydroxylamine solution at temperatures ranging from about -50.degree. C. to above ambient to produce the desired alcohol-free aqueous hydroxylammonium nitrate solution in a usable concentration and in high purity. The process is economical, environmentally acceptable, and facile.