Abstract: The instant invention relates to a process for removing trace sulfuric acid rom nitrocellulose fibers by dispersing the fibers in water and then subjecting them to ultrasonic energy for a time period and at an energy level sufficient to enhance the nitrocellulose fibers contact with water and facilitate sulfuric acid dispersal in the water. The waste water containing the traces of sulfuric acid contaminant from the nitrocellulose fibers is removed and the purified nitrocellulose fibers recovered.

Abstract: There is disclosed a process for the nitration of cellulose with nitric acid in the absence of sulfuric acid which comprises adding sufficient nitric oxide and oxygen or air to the nitration reaction mixture to react with the water formed in the reaction. This regenerates nitric acid which can be recycled to the reaction or removed and collected.

Abstract: A method for producing high density and high energy solid propellants conting of a solid inorganic oxidizing salt, a binder and a granular organic explosive comprising, the suspension of said ingredients in an organic solvent with agitation at ambient temperature to form a colloid, extruding the colloid, and raising the temperature to cure the grain, and the mixing of said propellant ingredients under vacuum, raising the temperature until a bulk viscosity of approximately 60,000 to 70,000 centipoises is reached, pouring said ingredients into a mold under vacuum, and curing the grains until the charge solidifies.