Abstract: In a process for producing a titanium trihalide by reducing a titanium tetrahalide with hydrogen, the improvement wherein the reduction is carried out in an organic solvent in the presence of an ether and at least one member of the group consisting of metals of Groups IB, IIB, IVB and VIII of the periodic table and compounds of these materials.

Abstract: In a spray nozzle including a nozzle structure having an internal chamber and an injecting hole provided through the nozzle structure at an outer end thereof, a control rod is provided in the internal chamber so that the outer end of the control rod projects outwardly through said injecting hole. A planar disc-shaped member is secured to the inner end of the control rod for defining a movable range in the axial direction of the same rod. A spring member is provided around the same rod for urging the rod inwardly, and a nozzle-tip member is secured to the outer end of the control rod for closing the injecting hole from outside. An apparatus utilizing the spray nozzle is further disclosed.

Abstract: A light-sensitive printing plate having a matt layer, which is removable at development, on the surface thereof.

Abstract: A light-sensitive copying material comprising at least two organic coating layers on a support, at least one of the coating layers being a light-sensitive layer which comprises an O-quinone diazide compound whose alkali solubility is increased by irradiation with active rays.

Abstract: A light-sensitive copying material comprising at least two organic coating layers on a support, at least one of the coating layers being a light-sensitive layer which comprises an O-quinone diazide compound whose alkali solubility is increased by irradiation with active rays.

Abstract: A light-sensitive copying layer containing an o-quinone-diazide compound and at least one of a secondary amine and a tertiary amine.

Abstract: A light-sensitive printing plate having a matt layer, which is removable at development, on the surface thereof.

Abstract: A process for eliminating sulphur oxides from combustion exhaust gases, comprising the steps of dividing the combustion exhaust gases into a first stream and a second stream, and passing the first stream through a first activated carbon bed which was previously washed with water, thereby drying the activated carbon, cooling the first stream, and removing a substantial portion of sulphur oxides from the first stream by adsorption. The treated first stream is mixed with the second stream and together passed through a second activated carbon bed which was previously dried, thereby removing sulphur oxides by dry adsorption. A third activated carbon bed which was previously used in the dry adsorption step is washed with water, removing the previously adsorbed sulphur oxides therefrom. Each of the first, second and third activated carbon beds are cyclically treated by the drying, dry adsorption and washing steps.

Abstract: A process for producing a planographic printing plate comprising subjecting a light-sensitive planographic printing plate member to a burning in wherein the light-sensitive planographic printing plate member is treated with a solution containing at least one compound selected from the group consisting of boric acid, or the metal salts or ammonium salt thereof, prior to the burning in.

Abstract: A catalytic device for a battery containing an aqueous electrolyte into which oxygen and hydrogen gases generated as a result of a electrolysis of the aqueous electrolyte pass and are catalytically recombined into water, which returns to the electrolyte: including a catalyst body; a gas-permeable catalyst vessel having the catalyst body arranged therein; a condenser vessel housing the catalyst vessel, the condenser vessel having an opening only at the lower portion thereof; an outer vessel of the catalytic device housing the condenser vessel; and a conduit or passageway for passing a gas from the condenser vessel through a gap between the condenser vessel and the outer vessel.