Abstract: A process for making hydrogen peroxide by catalytically reacting oxygen with hydrogen in a liquid reaction medium, which comprises(a) filling a reactor with a liquid reaction medium containing a catalyst,(b) dissolving oxygen and hydrogen in the liquid reaction medium by contacting the gases separately and simultaneously with the liquid reaction medium in the reactor,(c) thus forming hydrogen peroxide in the liquid reaction medium containing the catalyst,(d) while maintaining the reactor at such condition that a gaseous phase containing a combination of both oxygen and hydrogen is substantially absent during the reaction, and(e) separating the catalyst from the resulting reaction mixture containing hydrogen peroxide.

Abstract: An improved process for producing benzophenone-azine in which a catalyst can be removed, recovered and recycled is disclosed.

Abstract: A process for continuously preparing benzophenone-azines comprising oxidizing benzophenone-imines with molecular oxygen or a molecular oxygen-containing gas in the presence of a copper halide catalyst is disclosed. The oxidation reaction is carried out in a multistage system under an oxygen partial pressure gradually decreasing from the former stage to the latter stage and at a conversion gradually decreasing from the former stage to the latter stage, while controlling the conversion so that the molar ratio of the benzophenone-imines to the copper halide in the final stage be maintained at 1 or more. By the process, the continuous reaction can stably be performed at a high conversion of the benzophenone-imines without involving insolubilization and sedimentation of the catalyst.

Abstract: A process for preparing hydrazine hydrohalogenide is disclosed.

Abstract: A process for producing vinyl acetate which comprises decomposing ethylidene diacetate in the presence of at least one compound selected from fluorides, bromides, chlorides, iodides, halogens and mixtures thereof is disclosed. According to this invention decomposition rate of ethylidene diacetate is high and selectivity to vinyl acetate is also high.

Abstract: An oxygen and carbon dioxide absorbent comprising (A) a particulate substance wherein the particles of a hydrous alkali substance are covered with separator particles, (B) iron powder and (C) an electrolyte and a process for storing coffee by using the same is disclosed.

Abstract: An oxygen indicator adapted for printing or coating which comprises (a) at least one reducing agent, (b) a dyestuff causing color change when it is reduced with the reducing agent, (c) at least one thickening agent and (d) at least one solvent and a sheet-like oxygen indicator in which a composition comprising the above four components (a)-(d) is coated or printed on a substrate are disclosed.

Abstract: At least part of the material constituting the bag in which an oxygen absorbent is sealed is composed of a laminated sheet in which a gas permeable sheet is laminated to one or both sides of a microporous film to provide a lamination the two outside layers of which have different softening points, the layer having a lower softening point constituting the inner surface of the bag is disclosed. The bag of this invention can be produced at a high speed by using an ordinary heat-seal machine.

Abstract: An oxygen absorbent comprising (a) metal halide-coated metal powder having at least one metal halide coated on the surface of at least one metal powder, the amount of metal halide coated being in the range of from about 0.001 part to about 10 parts by weight per 100 parts by weight of the metal powder, and the water content of the metal halide-coated metal powder being less than 1% by weight on the basis of total weight of the metal halide-coated metal powder an (b) a water-containing material and a process for producing the same are disclosed.

Abstract: Dithionites are produced by reacting hydroquinones with bisulfites, pyrosulfites, alkyl sulfites, or aryl sulfites, substances capable of forming these salts upon reacting with sulfur dioxide or sulfurous acid, and sulfur dioxide or sulfurous acid.

Abstract: An oxygen indicator comprising at least one dyestuff, at least one alkaline substance and at least one reducing agent is disclosed.

Abstract: A thermoplastic blend composition having especially superior impact strength and fatigue resistance comprising 15 ro 80% by weight of a polyphenylene oxide, 16 to 75% by weight of a rubber-modified polystyrene, 2 to 15% by weight of an aromatic polycarbonate and 2 to 15% by weight of a high styrene rubber, the sum total of the proportions of these ingredients being 100% by weight.

Abstract: Polyphenylene ether resins are stabilized with a substituted dicarboxylic acid dihydrazide.