Abstract: Oxygen adsorbent for adsorbing oxygen from a mixed gas containing oxygen which comprises Na-A type zeolite containing iron with a valence of at least 2 or Na-A type zeolite in which a portion of Na is substituted with K and also contains iron. A process for the separation of oxygen from a mixed gas containing it by contacting the gas with the oxygen adsorbent at a low temperature to adsorb oxygen selectively.

Abstract: An apparatus for tire transportation in a tire-forming machine is described. The apparatus comprises a pair of circular plates attached to transfer means adapted to move in the axial direction of a tire-forming drum. A plurality of rotatable shafts are provided at substantially equal intervals in the circumferential direction on said circular plates and positioned on a circle concentric with said circular plates. To these shafts are attached levers having holding members for green tire or an intermediate assembly body for green tire and angular levers, said angular levers being connected together by means of linking members combined together through pins so as to form a number of parallelogram links of mutually cooperative movement and at least a driving means being provided for swinging said angular levers.

Abstract: The invention relates to a process and apparatus for separating mixed gas by adsorption in which adsorption and desorption steps are repeatedly carried out in a plurality of adsorption towers in staggered timings.The invention is characterized in that upon commencement of the desorption step, mixed gas having a low adsorbate constituent gas concentration which is delivered in the initial part of a pressure-reducing period (a primary pressure-reducing period) in an adsorption tower which has completed adsorption, is fed into an adsorption tower which has finished pressure-reduction to scavenge and desorb the adsorbate constituent gas adsorbed by an adsorbent, whereby enhancement of a yield of an unadsorbate gas can be achieved as compared to scavenging desorption making use of a part of an unadsorbate gas delivered during an adsorption step.

Abstract: An improved vulcanizing press for manufacturing tires is disclosed which is constructed such that a molding die assembly is clamped by means of a plurality of hydraulic cylinder units, wherein the respective hydraulic cylinder units are provided with a booster for serving to pressurize hydraulic liquid to actuate a ram slidably contained in a hydraulic chamber and a pilot operated check valve for controlling supply of hydraulic liquid into said hydraulic chamber or discharge of the same therefrom.

Abstract: A process for producing resinous lactone high polymers by the catalytic polymerization of lactones having a water content of less than 0.1% in the presence of a catalyst selected from the group consisting of stannous chloride, stannous bromide, stannous iodide, titanium trichloride, titanium tetrachloride, ammonium molybdate, zirconium nitrate, zirconium oxychloride and zirconium carboxylates, as a catalyst.

Abstract: In a process for producing a lactone polyester which comprises ring-opening polymerization of a lactone in the presence of a metal containing organic compound as a catalyst, the improvement wherein said compound is an alcoholate, chelate or organic acid salt of vanadium or molybdenum.

Abstract: A filter press for filtering a slurry in which there are a plurality of filter frames movable toward and away from each other and in which at least one movable pressure plate is positioned between each pair of filter frames. The pressure plate and filter frames form a filter chamber on each side of the pressure plate. This pressure plate is a combination of a partition plate positioned between the filter frames and frame members on opposite sides of the partition plate adjacent the filter frames. The frame members and filter frames have an open space thereinbetween which defines the filter chamber. The pressure plate also has a plurality of diaphragm members, one member on each side of the partition plate between the frame member and the partition plate. The diaphragm members and the partition plate have interstices thereinbetween.

Abstract: A process for preparing alkyd resins, characterized by reacting one or a mixture of two or more straight chain, inner epoxyalkanes having 6 to 20 carbon atoms with a cyclic dicarboxylic acid and a polyhydric alcohol.

Abstract: In a filter press having filter frames arranged parallel to each other so that they may be opened and closed, a liquid-feed metallic member, positioned at a side portion of the filter frame for feeding liquid to be processed to each filter chamber formed between adjacent filter frames, is fixedly secured to one of two links pivotably mounted with pins onto the respective adjacent filter frames in such manner that in response to opening and closing of the filter frames the liquid-feed metallic member may be automatically engaged with and disengaged from recessed portions of the filter frames. These recessed portions communicate with said filter chamber via filter cloths.

Abstract: A method for press-bonding molding of breaker layers for radial tires by pressing the breaker plys on a molding drum to form a cylindrical breaker layer. The method is characterized in that at least during the press-bonding of the breaker plys, the press-bonding face which makes no parallel relative movement with respect to the face of the breaker ply to be press-bonded.

Abstract: A catalyst for preparing .alpha.,.beta.-unsaturated aldehydes by the gas phase catalytic oxidation of .alpha.,.beta.-unsaturated hydrocarbons, comprising as critical metal components molybdenum, bismuth and at least one transition metal selected from iron, nickel and cobalt, said catalyst being prepared by adding ammonium rhodanide to all or some of the starting liquid mixtures containing said catalytic metal components.