Loading patent…
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorThomas Liggett
Estimating the term…
A process for preparing concentrated solutions of hydroxylammonium nitrate (HAN) or hydroxylammonium perchlorate (HAP) which comprise reacting hydroxylammonium sulfate with either barium nitrate or barium perchlorate, in such a way that the dissolved barium salt is reacted with the dissolving hydroxylammonium sulfate while agitating the system so as to keep the slurried barium salt from directly contacting the hydroxylammonium sulfate. The rate of addition of the hydroxylammonium sulfate is slower than the rate of solution of the barium salt. An excess of barium nitrate or barium perchlorate ions is needed in the solution to which the hydroxylammonium sulfate is added until the reaction is terminated. The concentration of the HAN or HAP in the final solution can be increased still further if a solution of HAN or HAP is respectively used in forming the barium salt slurry.
In a process for producing concentrated hydroxylammonium nitrate solutions by reacting an alkaline earth nitrate salt selected from the group consisting of barium nitrate and calcium nitrate with a hydroxylammonium salt selected from the group consisting of hydroxylammonium sulfate and hydroxylammonium acid sulfate, the improvement comprising:
In a process for producing concentrated hydroxylammonium perchlorate solutions by reacting an alkaline earth perchlorate selected from the group consisting of barium perchlorate and calcium perchlorate with a hydroxylammonium salt selected from the group consisting of hydroxylammonium sulfate and hydroxylammonium acid sulfate, the improvement comprising:
Dependencies are inferred from the claim text.