Abstract: A corrosion-preventing soyabean-glycerol alkyd resin is preprared by combng soyabean oil and glycerol in a reaction kettle, and after heating to about 400.degree. F., fused litharge is loaded. The temperature is then increased to about 440.degree. F. and held until a clear solution is formed. Phthalic anhydride is then loaded and heat gained cautiously to about 450.degree. F. Butylphenol resin is loaded. Then China wood oil is loaded. A first carbon dioxide blow is commenced. Then a second carbon dioxide blow is initiated. The mixture is then cooled to about 425.degree. F. and held. The mixture is dropped into xylene and thinned with Varnish Makers' and Painter's Naptha (petroleum thinner) prior to use with the barium metaborate corrosion preventer compound of this invention which was developed to replace chromium which has reduced availability due to exportation restrictions from the major supplier country.

Abstract: A hypervelocity penetrator for an electromagnetic accelerator that includes nosetip section that is made of a composite material that is ablative, an intermediate section of a heavy metal such as tungsten or tungsten alloy, and a rear section that is made of ultrahigh-strength material such as steel alloy with the rear section being hollow to provide a cone-shaped penetrator that has a center of gravity that is forward of the center of pressure of the penetrator structure.

Abstract: A method of installing a polysiloxane insulation in an interceptor rocket motor comprises of applying an adhesive composition, which is compatible with a composite rocket motor case and polysiloxane with which it interfaces; applying a polysiloxane in an uncured state and any added reinforcing fibers to the inside surface of rocket motor case containing the adhesive coating; curing the polysiloxane to form a polysiloxane insulation; casting a solid propellant composition on the cured siloxane insulation; and curing the cast solid propellant composition to complete the method of installing a polysiloxane insulation. The polysiloxane insulation enables the use of a wider selection of reinforcing fibers, even fragile fibers, since the fibers can be incorporated with less energy and the mixing and extruding of the polysiloxane does not destroy the fiber length.

Abstract: Disclosed is a method of enhancing the rate of consumption of a propellant s a result of having shrink tubes or spheres embedded in the propellant. The shrink tubes suitable for use in this method are derived from various polyurethane or polyolefin resins which undergo shrinkage when exposed to moderate heat. The mechanism of enhancement derives from the fact that when the flame front reaches the shrink tube or sphere, the tube or sphere undergoes shrinkage, and thus, exposes additional propellant surface to the burning process. High burning rate are achieved because of the apparent reduced overall propellant web created by the presence of and resultant action to these shrink tubes or spheres.A modification of the method of this invention is to embed these plastic tubings in the propellant, raise the temperature of the propellant mass to a temperature at which the tubing will undergo shrinkage.

Abstract: A method of safely detoxifying mustard gases comprises reacting the gases a first reaction with incandescent pyrophoric metallic powder compounded in specific formulation. A second reaction enhances the neutralization of the toxicity of the mustard gases by thermal pyrolysis or deflagration. To accomplish the basic reaction which results in formation of thiacyclopentane, aluminum powder which is a preferred incandescent, pyrophoric metallic powder, is compounded in a basic formulation of aluminum powder, a binder, a curing agent, oxidizing agent, and burn rate catalyst. Examples of detoxification formulation which accomplishes the first reaction as well as a second reaction which enhances the neutralization of the toxicity of the mustard gases or toxic chemical agents by thermal pyrolysis or deflagration are shown under Table II and Table III.

Abstract: Ultra-ultrahigh burning rate composite modified double-base propellants are btained by use of porous ammonium perchlorate as a replacement for the ultra-ultrafine ammonium perchlorate. The porous ammonium perchlorate is used in combination with aluminum powder fuel and aluminum staples, nitroglycerin as an explosive plasticizer, triacetin as a non-explosive plasticizer, stabilizers selected from resorcinol and 2-nitrodiphenylamine and other selected additives for achieving desired processing, mechanical, ballistic, and other properties of the propellant.

Abstract: A non-shrinking, strain-free, dimensionally-stable modified epoxy resin is disclosed for use in the fabrication of composite, structural laminates. The uniqueness of product preparation is that the optimum amount of the lactone compound can be copolymerized with the epoxy resin since equimolar amounts of each monomer do not necessarily need to be copolymerized to achieve the optimum shrink resistance. By varying the ratio of shrink-resistant monomer and epoxy in a resin blend, a means is available for controlling the shrinkage, and, in this manner, it would be possible to produce a laminate with a matrix so tailored so that reinforcing fibers would not undergo breakage, or pull out of the matrix on being stressed. The modified epoxy resin is the reaction product produced from reacting a compound selected from 6-hexanolactone and 5-norbornene-2,2-dimethanol with the diglycidyl ether of bisphenol A and cured with the curing agent hexahydrophthalic acid.

Abstract: Mechanical enhancement of the burning rate of solid propellants is achieved y the incorporation of limited percentages of gas-generated-expandable beads into the solid propellant composition during propellant mixing and which are chemically crosslinked during propellant curing to a solid propellant grain. When the flame front reaches an individual bead during propellant grain burning, the bead which contains a blowing agent selected from 4-toluenesulfonyl hydrazide and 4,4'-oxybis(benzenesulfonyl hydrazide) and coated with a bead forming material consisting of about 95 parts by weight hydroxyl-terminated polybutadiene prepolymer, of about 5 parts by weight of trimethylolpropane, and of about 6 parts by weight of isophorone diisocyanate expands to several times its volume and ruptures. Bead expansion or rupture causes a disruption of the propellant's surface, and the flame can penetrate into the propellant. The penetration results in a major increase in burning rate.

Abstract: A fast-acting cure catalyst for use in hydroxyl-terminated polybutadiene-ed solid propellant formulation is tris(ethoxyphenyl)bismuthine. The incorporation of this catalyst as an additive in an amount of about 0.025 weight percent into a composite propellant formulation enables the formulation to be ambient mixed and ambient cured at 80.degree. F. or accelerated oven cured at 140.degree. F. Both oven and ambient cures are considerably more cost effective than the conventional oven cure if the prior art cure catalyst, triphenylbismuthine (TPB), is used. Other composite propellant ingredients comprise ammonium perchlorate of about 65 weight percent, aluminum powder of about 14 weight percent, the organic oxidizer, cyclotetramethylenetetranitramine, of about 10 weight percent, isophorone diisocyanate additive to provide an isocyanate/hydroxyl ratio of about 0.92, and hydroxyl-terminated polybutadiene polymer of about 11.5 weight percent.

Abstract: A signal flare with luminous oscillations resulting from a combustible cosition of octafluorohexanediol, magnesium or aluminum, chlorinated benzene, an inorganic oxidizer, and polyisocyanate.

Abstract: A method and a product employed in the method for the mechanical and cheml removal of dental plaques are disclosed. The method comprises providing cotton filaments of a size suitable for passing between teeth as a dental floss, chemically impregnating the cotton filaments by soaking in a saturated solution of potassium hydrogen tartrate and potassium hydrogen citrate, subsequently drying the chemically impregnated cotton fibers, and passing the dried chemically impregnated cotton filaments in the form of a dental floss between teeth and over the surfaces of the teeth containing plaque compositions including a calcium phosphate to thereby convert the calcium phosphate to the more soluble compounds calcium citrate and calcium tartrate which go into solution and the plaque is, thus, removed from the surfaces of the teeth.

Abstract: The mechanical burning rate accelerators, e.g., graphite linters or alumi whiskers, which are employed to enhance the burning rate of solid propellants are modified by depositing specks of metal selected from the group of metals consisting of iron, vanadium, or palladium on the graphite linters or aluminum whiskers. An increase in burning rate of the propellant composition is achieved when the modified mechanical burning rate accelerators in an approximately equal percentage by weight is substituted for the unmodified graphite linters or aluminum whiskers in the propellant composition. During the propellant burning the specks of metal generate localized hot spots of heat which is graphite linters or aluminum whiskers conduct into the propellant and thereby produces the increase in burning rate.

Abstract: High intensity yellow smoke and flame flare compositions are manufactured a procedure which closely parallels that of solid rocket propellants. These compositions use similar ingredients to those used in solid rocket propellants. These compositions are castable whereas conventional flares consist of pressed flare charges. Both colored flame and smoke are produced from the same composition. A liquid curable binder composition is selected from triethylene glycol succinate or carboxyl-terminated polybutadiene crosslinked with O,NN-tris(2,3-epoxypropyl)-4-aminophenol, and hydroxyl-terminated polybutadiene crosslinked with isophorone diisocyanate. The color producing ingredient is a first inorganic salt of lead iodide which can be further enhanced by an additive of a reactive source of iodine selected from iodine pentoxide and iodoform. A second inorganic salt is selected from inorganic oxidizing salts consisting of potassium perchlorate and amononium perchlorate.

Abstract: Solid propellant is first placed in a closed container with a solution of ter and detergent. A water slurry is then created by injecting compressed air in superheated steam into the solution to place the propellant and solution under several atmospheres of pressure and at the same time to raise the temperature of the solution to 400.degree.-600.degree. F. This results in oxidation of the propellant into such constituents as carbon dioxide, water, nitrous oxide and etc. These constituents are then removed by absorption.

Abstract: Disclosed is a liner-barrier system which is impermeable when cured to the igh concentrations of carboranyl burning rate accelerator which are incorporated into ultrahigh-burning rate propellants which are being developed for advanced interceptors. The liner-barrier composition, when uncured, comprises a polyvinyl butyral resin coblended with thermosetting resins, such as, phenolic, epoxy etc., that employs triphenylbismuthine as a quick cure catalyst, 4,5-epoxycyclohexylmethyl 4',5'-epoxycyclohexyl carboxylate and polyisocyanate as curative and crosslinking agents to further modify the liner-barrier formulation by reacting with the secondary hydroxyl groups. Further modification of the liner-barrier formulation is achieved by incorporation of aluminum powder to impart additional properties of impermeability. The uncured liner-barrier composition contains from 8.90 to about 10.21 weight percent solids in a solvent blend of isopropyl acetate and isopropyl alcohol which comprises from about 89.79 to about 91.

Abstract: A method of generating reactive crosslinking sites on the surface of the onium perchlorate particles contained in a Catocene-catalyzed, high-burning rate solid propellant composition by a processing agent which also results in a major improvement in the processibility thereof. The fluid state of the propellant is retained during mixing as a result of interaction between the processing agent prepared prior to incorporating it or when the processing agent is prepared in situ during the propellant mix cycle. There are two alternates available toward improving the processibility of Catocene-catalyzed, high-burning rate propellants. These are: a. The synthesis of a condensation product (processing agent) by the interaction at room temperature of 1,3,5,7,9-pentaazanonane, acrylonitrile, oxiranylmethanol and octadecyl isocyanate in predetermined ratios; or b.

Abstract: The glycidyl azide polymer produced by hydrolysis of glycidyl chloride fowed by reaction with sodium azide is employed in a crosslinked composite-modified double-base propellant composition both in the casting powder portion and casting solvent portion as a superior replacement for nitroglycerin in each portion specified. The crosslinked composite-modified double-base propellant composition is characterized by having a greater safety in handling, reduced sensitivity to detonation, higher burning rate, higher specific impulse, and improved mechanical properties as compared with a like composition containing nitroglycerin in the casting powder and the casting solvent portions.

Abstract: Solid oxidizer particles of ultrahigh surface area are produced by an etching process which includes employing selective extractants in a process which causes the formation of indentations and/or cavities on the surfaces of the oxidizer particles, and crevasses and tunnels in the oxidizer particles. The method is particularly attractive for manufacturing ultrahigh surface area ammonium perchlorate which has limited solubility in the extractants ethanol, butanol, or a mixture of these extractants.

Abstract: The effectiveness of the burning rate accelerator, iron oxide (Fe.sub.2 Ob.3), is enhanced, and a markedly improvement in the mechanical properties of a propellant composition are simultaneously achieved as a result of grinding a composite propellant paste in a roller mill instead of in a conventional sigma blade propellant mixer. The propellant paste is composed of a hydroxyl-terminated polybutadiene prepolymer, fluid-energy mill-ground ammonium perchlorate, dioctyl adipate, aluminum oxide, isophthaloyl bis-1-(2-methylaziridine), and iron oxide. The final product has a higher stress capability, higher strain capability, higher modulus, and higher gel fraction, and a burning rate that is about 80% higher as compared with sigma blade propellant ground and mixed propellant.

Abstract: Recovery and disposing of waste materials containing inorganic chemicals not be effected by incineration to meet environmental regulations as is the situation with waste organic materials. As long as the inorganic toxic materials are in some soluble form, they can pollute the environment, and, also, end up in the water supplies. Two different disposal methods are disclosed wherein one method is effective for removing the insoluble inorganic salts by converting them into mesylates by reaction with methanesulfonic acid or with methanedisulfonic acid. Most mesylate salts are highly soluble in aqueous and certain organic systems. As an illustration, 1.0 part of silver mesylate or 2.0 parts of stannous mesylate or lead(II) mesylate will dissolve in 1.0 part of water at room temperature. This unique solubilizing property offers the ability of leaching such toxic metal contaminants as lead, cadmium, etc. from sewage sludge. The metal salts can thus be recovered and recycled.