Abstract: Granular alkali metal dihaloisocyanurate particles (such as sodium dichloroisocyanurate) comprised of a core of alkali metal dihaloisocyanurate encapsulated in a plurality of layers of hydrated alkali metal dihaloisocyanurate are produced by spraying a pumpable and sprayable aqueous slurry of hydrated alkali metal dihaloisocyanurate particles onto suspended particles of solid alkali metal dihaloisocyanurate in anhydrous or hydrated form above a moving bed of said particles. The solid particles coated with the slurry are heated to simultaneously evaporate and remove water from the slurry whereby said particles are coated with a layer of solid hydrated alkali metal dihaloisocyanurate.A portion of the moving bed of coated particles is removed from the spraying zone and further processed, if desired. In one embodiment, the hydrated particles are sized, and undersize and crushed oversize are recycled to the moving bed.

Abstract: A method of treating karaya gum to stabilize it so that it is less sensitive to the presence of certain priming compositions and will exhibit, when used with priming compositions, improved extrusion characteristics and rheological stability. The karaya gum is suspended in an anhydrous alcohol and treated with a reagent which is soluble in the alcohol whereby the gum renders a priming composition suitable for extrusion for mechanically charging primers.

Abstract: Tungsten hexafluoride is prepared by reacting selected tungsten compounds with a halogen and hydrogen fluoride at elevated temperature and pressure under substantially anhydrous conditions in the substantial absence of air.

Abstract: An improved process is disclosed for the manufacture of perchloromethyl mercaptan by chlorination of carbon disulfide in the presence of aqueous hydrochloric and sulfuric acids in which a high concentration of sulfuric acid is maintained in the reactor to obtain an aqueous by-product acid mixture from which sulfuric and hydrochloric acids may be separated by a simple distillation to give commercial grade hydrochloric acid and sulfuric acid.

Abstract: An improved copper base alloy having good high temperature properties, such as hot rollability, creep strength and stress rupture life. The alloy contains from about 2 to 9.5% aluminum, from about 0.001 to 3% silicon, and a grain refining element selected from the group consisting of iron from about 0.001 to 5%, chromium from about 0.001 to 1%, zirconium from about 0.001 to 1%, cobalt from about 0.001 to 5% and mixtures thereof. In addition, the alloy contains titanium in an amount from about 0.2 to 1%.

Abstract: Haloisocyanuric acids are prepared in a process in which solid cyanuric acid is reacted with a dihalogen monoxide gas, such as dichlorine monoxide or dibromine monoxide.

Abstract: A paper tobacco substitute which produces a neutral taste when blended with tobacco, comprising cellulose fibers and a filler, said filler comprising at least 55% by weight finely pulverized carbon particles based on the weight of the cellulose. In addition to carbon, the filler may include an alkaline earth metal carbonate or oxide such as calcium carbonate or magnesium oxide to further enhance the properties of the paper as a tobacco substitute. The carbon filled paper may be cut or shredded to simulate natural tobacco and can be used as a blend with tobacco in smoking articles.

Abstract: A method of producing multiple gauge metal strip wherein surface reduction is confined to an area comprising from about 5 to about 50% of total surface area, and volume reduction ranges from about 10 to about 60% of initial strip cross section area, which comprises measuring the maximum stock removal in relation to the yield strength of said strip, adjusting a shaving apparatus to prevent it from exceeding said maximum and passing the strip through said apparatus. The method of this invention may be practiced as a single pass procedure.

Abstract: Selected chlorine-containing methylene-bridged diaryl diisocyanates are used in the production of polyurethane foam.

Abstract: Novel alkoxysilane cluster compounds are described having the formulaM {OSi[OSi(OR')3}.sub.aorM {OSiR[OSi(OR')3]2}.sub.awherein a = 2, 3 or 4; M is a substituted or unsubstituted branched or straight chain hydrocarbon di-, tri- or tetraradical having up to 25 carbon atoms; R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms. The preparation of these novel alkoxysilane cluster compounds is also described.

Abstract: A heat exchanger tube, and a method and apparatus for forming a heat exchanger tube are disclosed. The tube is formed from a metal strip having inflatable passages. The passages are inflated after the tube is formed. In use, one fluid flows through the tube and at least one fluid flows through the wall passages. Another fluid, contacting the exterior of the tube, may be employed.

Abstract: 1-Phosphorosemicarbazides having the formula ##EQU1## are effective and durable additives for reducing the combustibility of cotton fabrics to which they are applied.

Abstract: A method is provided for removing silver from aqueous systems contaminated therewith with 2-mercaptopyridine-1-oxide and for recovering the 2-mercaptopyridine-1-oxide.

Abstract: A method of preparing molybdenum derivative compound catalysts for epoxidation reactions is described wherein an oxygen-containing molybdenum compound is reacted with an organic compound having vicinal hydroxyl groups in the presence of a hydrohalic acid selected from hydrofluoric acid, hydrochloric acid, hydrobromic acid and hydroiodic acid.

Abstract: Selected bleaching agents are used to decolorize off-color phosphate polyesters.

Abstract: A means for providing an indication of the length of the bolt member of an anchor bolt assembly of the type including a bolt member and an expandable sleeve member. The end of the bolt member opposite the sleeve expanding portion thereof is provided with a recess, the depth of which is reversely proportional of the length of the bolt member.

Abstract: A method of treating karaya gum to stabilize it so that it is less sensitive to the presence of certain priming compositions and will exhibit, when used with priming compositions, improved extrusion characteristics and rheological stability. The karaya gum is suspended in an anhydrous alcohol and treated with a reagent which is soluble in the alcohol whereby the gum renders a priming composition suitable for extrusion for mechanically charging primers.

Abstract: Selected chlorine-containing methylene bridged diaryl diisocyanates are used in the production of high load-bearing, high strength polyurethane foam.

Abstract: Dihaloisocyanuric acid salts are produced in a process reacting a solid monometal cyanurate selected from the group consisting of a monoalkali metal cyanurate or a monoalkaline earth metal dicyanurate with a gaseous mixture of a dihalogen monoxide and an inert gas. The gaseous mixture is comprised of from about 1 to about 30 percent by volume of the dihalogen monoxide.Alkali metal and alkaline earth metal dihaloisocyanurates and their hydrates are produced in the absence of a solvent as dry, free-flowing products.

Abstract: Alkyl substituted benzene is used as a solvent to extract organic isocyanates from crude reaction mixtures containing organic isocyanates. The crude reaction mixture is admixed with the alkyl substituted benzene solvent and heated to a temperature in the range from 130.degree. C. to about 280.degree. C. for a solvent extraction period ranging from about 0.5 to about 24 hours. The alkyl substituents on the benzene contain between 1 and 15 carbon atoms and sufficient substituents to provide at least two carbon atoms in the substituents.