Abstract: A double-base granular propellant consisting mainly of nitroglycerine and nitrocellulose, said nitrocellulose being formed into a three-dimensional structure by the crosslinking reaction of a polyfunctional isocyanate, is disclosed. The propellant is superior to conventional double-base granular propellant in the shooting performance, and can be obtained by a simple solvent-granulation process.

Abstract: A copolymer having peroxy bonds in the molecule thereof which is obtained by copolymerizing an diacyl type polymeric peroxide having ester bonds therein with one or more monomers having double bonds therein, may have a broad range of average molecular weight and a lot of peroxy bonds therein, and it may be used as an useful polymerization initiator in producing a block copolymer.

Abstract: Hydrogenated fatty acid having excellent color and stability can be obtained by hydrogenating fatty acid, oil or fat, and distilling the crude hydrogenated fatty acid; or splitting the hydrogenated oil or fat into crude hydrogenated fatty acid and distilling the crude hydrogenated fatty acid.

Abstract: When polystyrenes having peroxy bonds therein are charged into a polymerization system of methyl methacrylate series monomers, the said polystyrenes act as an opaquing agent and a polymerization initiator.The obtained opaque or translucent plate is splendid in optical and mechanical properties.

Abstract: A non-aqueous liquid dispersion of polymers is obtained by a first step of copolymerizing one or more vinyl-type monomers with one or more polymerized peroxides, capable of further polymerization followed by a second step of copolymerizing the resulting copolymer having peroxy bonds therein with one or more vinyl-type monomers different than the one or ones used in the first copolymerization step, in an organic liquid which dissolves the polymers of the vinyl-type monomers of the first copolymerization but does not dissolve the polymers of the vinyl-type monomers used in the second copolymerization. The dispersion is splendid in dispersion stability and it is very useful as a thermosetting, film-type, coating composition.

Abstract: A double-base granular propellant consisting mainly of nitroglycerine and nitrocellulose, said nitrocellulose being formed into a three-dimensional structure by the crosslinking reaction of a polyfunctional isocyanate, is disclosed. The propellant is superior to conventional double-base granular propellant in the shooting performance, and can be obtained by a simple solvent-granulation process.

Abstract: Coal dispersing oil compositions containing 10-89.99% by weight of a petroleum oil, 10-89.99% by weight of coal powders and 0.01 to 5% by weight of a surface active agent are produced by mixing previously milled coal powders and a petroleum oil and then dehydrating, or by millng and dehydrating coal in the petroleum oil, and then adding a surface active agent thereto to obtain dispersion.

Abstract: Two molecules of mono-substituted acetaldehyde having the following general formula (I) and one molecule of organic halide having the following general formula (II) are reacted in an alkaline aqueous solution in the presence of a phase transfer catalyst whereby a .beta.-.gamma.-unsaturated aldehyde having the general formula (III) as shown in the following reaction scheme (A) is obtained directly from the monosubstituted acetaldehyde without forming an .alpha.,.beta.-unsaturated aldehyde ##STR1## wherein R.sub.1 is straight chain or branched chain alkyl, alkenyl, cycloalkyl or aryl, R.sub.2 is allyl, substituted allyl, propargyl, substituted propargyl, benzyl or substituted benzyl, and X is halogen.

Abstract: A water-gel explosive comprising ammonium nitrate alone or in admixture with other inorganic oxidized acid salt, water, nitroparaffin having 1 to 3 carbon atoms, a gelatinizing agent for water, a gelatinizing agent for nitroparaffin, glass hollow microspheres and an amide has a high initiation sensitivity even at low temperature.

Abstract: Polymeric diacyl peroxides containing ester groups in the molecules are insensitive to impact, friction and heat. Accordingly, they can be safely produced and handled. They are useful as industrial polymerization initiators and they dissolve promptly in vinyl-type monomers.

Abstract: Dicyclododecyl peroxydicarbonate of the formula: ##STR1## is stable and can be stored at room temperature. It has a high solubility in organic solvents and good compatibility with unsaturated polyester resins.This compound is an improved polymerization initiator for free radical polymerizations of ethylenically unsaturated monomers, including copolymerization with monomers capable of copolymerizing therewith.This compound also is a catalyst for curing unsaturated polyester resin compositions.

Abstract: A sintered compact of boron nitride with high density form having high oxidation resistance, water resistance, compressive strength and hardness can be obtained by sintering wurtzite-structured boron nitride together with a boride of titanium, zirconium or hafnium, or with mixtures thereof under a condition of high temperature and high pressure.

Abstract: Novel sulfur-containing complex esters are constituted with thiodipropionic acid, polyhydric alcohols having at least three valencies and monobasic acids having 5 - 24 carbon atoms. The sulfur-containing complex esters are excellent in the thermal stability and the lubricity, so that these esters are useful as base oils for spin finishing compositions for synthetic fibers.

Abstract: An automatically inflating lifesaving buoy device having a gas generating device in which the gas generating composition is ignited by an electric ignition device powered by a water-activated electric cell or battery. The gas then generated is cooled as it flows into an inflatable bag to form the lifesaving buoy.

Abstract: A gas generator for an inflatable life raft having a gas-generating chamber filled with a gas-generating composition which generates gas by chemical reaction, either a chemical cooling chamber or a physical cooling-and-filtering chamber or both, a gas passage in communication with a safety valve, and an ignition device which provides rotational friction between a friction means and a frictional igniting agent. The gas generator has the advantages that it is not influenced by the environmental temperature, a gas temperature drop due to adiabatic gas expansion accompanying the gas discharge does not occur and therefore the generated gas can very reliably be discharged, the gas is fully cleaned, troubles due to abnormality of the gas-generating composition can be avoided, and it can be made light and small.

Abstract: Stable peroxyesters containing both conjugated diene and peroxidic groups in their molecule; e.g., t-butylperoxysorbate, t-hexylperoxysorbate, 1,1,3,3-tetra-methylbutylperoxysorbate, are copolymerizable with other polymerizable monomers and the said compounds are useful for polymerizing monomers as free radical initiators.

Abstract: High-purity dicumyl peroxide is obtained by mixing a melted crude dicumyl peroxide containing not less than 50% of dicumyl peroxide with an aqueous solution of surfactant, emulsifying the resulting mixture, and cooling the emulsion to a temperature lower than the temperature for solidifying dicumyl peroxide.