Method for preparation of amine salt bonding agents

Abstract

A stoichiometric amount of a polyamine compound selected from the group cisting of cyanoethyl substituted tetraethylene pentamine (TEPAN), or the glycidol reaction product of cyanoethyl substituted tetraethylene pentamine (TEPANOL) is reacted with a stoichiometric amount of perchloric acid to yield an amine salt bonding agent useful in propellant compositions. This improved method prevents the generation of ammonia (as in prior art method) which has to be removed prior to use of amine salt bonding agent in a propellant composition. Also, a lesser amount of diluent water is involved in this method which offers an advantage by not having to strip an excessive amount of water by heat, purge, or vacuum means. The amine salt bonding agents prepared by this improved method are shown to be of like identity and quality as shown by IR spectroscopic examination and their testing in a propellant composition.

We claim: 
     
       1. A method for preparing an amine salt bonding agent comprising: (i) adding a predetermined stoichiometric amount of a polyamine compound selected from a cyanoethyl substituted tetraethylene pentamine and the glycidol reaction product of cyanoethyl substituted tetraethylene pentamine to a reaction container;   (ii) slowly adding with stirring a predetermined amount of a stoichiometric amount of perchloric acid to said polyamine compound, and continue stirring to achieve a homogenious mixture;   (iii) transferring said homogenous mixture to a vessel appropriate for stripping diluent water; and,   (iv) stripping diluent water from said reaction mixture and recovering said amine salt bonding agent.   
     
     
       2. The method of claim 1 wherein said polyamine compound selected is cyanoethyl substituted tetraethylene pentamine, said stoichiometric amount of said polyamine compound is about 25.2 grams, said stoichiometric amount of said perchloric acid which is 60% perchloric is about 21.3 grams, and wherein about 18 percent diluent water is stripped from said homogenous mixture and said amine salt bonding agent is recovered.