Abstract: Articles such as containers made of a highly crystalline olefin polymer having improved transparency and impact strength are obtained by biaxially extending an extruded tubular body of said polymer at an orientation temperature below the melting point thereof to attain an extension magnification ratio of at least 1.5 for each of the longitudinal and lateral directions. The polymer is a statistical random copolymer of propylene and from 1.5% to 5.0%, and preferably from 3.0% to 5.0%, by weight ethylene having a melt index of 0.6 - 3.0 g/10 min. Optionally, from 0.03 to 0.20 part by weight of p-tert. butyl benzoic acid, benzoic acid or sodium benzoate are added to 100 parts by weight of said copolymer.

Abstract: An improved process for the polymerization of olefins in the presence of catalyst consisting essentially of:A. a titanium trichloride composition obtained by micro-pulverizing a titanium trichloride component prepared by reduction of titanium tetrachloride with a member selected from the group consisting of hydrogen, silicon, metallic titanium and metallic aluminum, in the presence of a complex of aluminum chloride or aluminum bromide with an electron-donor selected from the group consisting of oxygen-containing organic compounds, nitrogen-containing organic compounds and phosphorus-containing organic compounds, the amount of the complex being 0.005 to 0.5 mole per mole of the titanium trichloride component, and extracting the micro-pulverized titanium trichloride component with a solvent selected from the group consisting of saturated aliphatic hydrocarbons, aromatic hydrocarbons and halogenated aromatic hydrocarbons; andB. an organoaluminum compound, and the catalyst therefor.

Abstract: A process for preparing aminoanthraquinones of high purity, which comprises catalytically hydrogenating nitroanthraquinones in the suspended state in an aqueous medium in the presence of a hydrogenating catalyst. In a preferred embodiment, the catalytic hydrogenation may be carried out in the presence of an organic or inorganic base, followed, if desired, by oxidizing the hydrogenation product.

Abstract: A method for separating large-sized film-like plastics, such as polypropylene or polyvinyl chloride, which comprises placing the plastics in a separation tank containing an aqueous liquid medium and introducing gas bubbles into the tank thereby to cause the gas bubbles to adhere to the surface of the plastics. The buoyancy of the gas bubbles causes the plastics to rise to the medium surface. Addition of a flotation agent and/or a wetting agent further promotes the floating of the plastics.

Abstract: In the production of anhydrous sodium dithionite by reacting sodium formate, an alkaline sodium compound and sulfurous acid anhydride in hydrous methanol, a process for treating the mother liquor, which comprises cooling the mother liquor left after the separation of the resulting anhydrous sodium dithionite to a temperature in the range of +5.degree. to -30.degree. C, and separating the precipitated sodium thiosulfate by filtration.

Abstract: In the production of anhydrous sodium dithionite by reacting sodium formate, an alkaline sodium compound and sulfurous acid anhydride in hydrous methanol, a process for treating the mother liquor, which comprises adding an alkali to the mother liquor left after the separation of the resulting anhydrous sodium dithionite to adjust its pH to at least 8, separating the solids precipitated, and oxidizing the filtrate with an oxidizing agent.

Abstract: Solid copolymers are produced by copolymerizing a mixture of: (A) at least 30% by weight of a monomer having the formula: ##STR1## wherein R.sub.1 is H or CH.sub.3 and R.sub.2 is an alkyl radical containing from 1 to 14 carbon atoms; (B) from 3 to 20% by weight of an ethylenic .alpha., .beta. unsaturated carboxylic acid or anhydride thereof, or from 3 to 40% by weight of glycidyl acrylate or glycidyl methacrylate; and (C) from 0 to 67% by weight of a monomer copolymerizable with said monomers (A) and (B). Preferably, the mixture is first bulk-polymerized until conversion to the copolymer is from 10 to 80% by weight and the polymerization is completed by suspension-polymerization. Thermosetting solid coating compositions are produced by mixing a major proportion of a solid copolymer so produced with a minor proportion of a cross-linking compound or with an epoxy resin containing at least 2 epoxy radicals in the molecule in presence of a tertiary amine curing accelerator.

Abstract: A method for the separation of a mixture of a polyester and a cellulose derivative comprising introducing gas bubbles into an aqueous liquid medium containing the mixture of the polyester and the cellulose derivative, optionally in the presence of at least one wetting agent and at least one flotation agent thereby separating the mixture by flotation into the polyester and the cellulose derivative.

Abstract: A method and apparatus for grouping metal ingots of predetermined shape into ingot groups each consisting of four ingots and stacking these ingot groups in tiers to form a stack. In the method and apparatus, two kinds of ingot groups of different patterns are automatically alternately stacked in tiers utilizing the movement of a conveyor conveying the ingots, so that dangerous relative sliding movement of the ingots in the stack may not occur during transportation.

Abstract: A method of producing a modified waxy ethylene polymer, which comprises polymerizing ethylene in an inert hydrocarbon solvent at 120.degree. - 250.degree. C. and pressure ranging from the vapor pressure of the solvent at the polymerization temperature to 100 Kg/cm.sup.2 using a catalyst composed of a halogen compound of titanium and/or vanadium and an organoaluminum compound supported on a carrier comprising a hydrocarbon-insoluble magnesium-containing compound to form a waxy ethylene polymer having a viscosity average molecular weight of 500 to 30000, reacting an unsaturated polycarboxylic acid with the resulting waxy ethylene polymer in the presence of a peroxide at a temperature above the melting point of the waxy ethylene polymer and up to 250.degree. C., and if desired, contacting the ethylene polymer, before or after the reaction with the unsaturated polycarboxylic acid, with oxygen or a gas containing oxygen.

Abstract: A method of electrolytically recovering zinc is described wherein the pH value of a neutral leaching solution is adjusted to about 1 to 3 before being mixed with a circulating electrolyte, a downward stream of the neutral leaching solution in the form of a spray within a first gas-liquid contact type cooling tower is supplied, an upward stream of cooling gas is supplied under pressure at high speed from a lower part of the cooling tower in countercurrent relation to the downward stream of neutral leaching solution, thereby subjecting balls of light weight which are packed within the cooling tower to floating and rotating movement for bringing the neutral leaching solution in the cooling contact with the cooling gas on the surface of the balls so as to cool the neutral leaching solution while, at the same time, removing impurities depositing in gel form on the balls by utilizing the self-cleaning action of the balls.

Abstract: The electrodeposited metal plate peeling off machine comprises a hammering apparatus, a peeling off apparatus, and a transfer means installed throughout the foregoing apparatuses for the purpose of intermittently transferring a cathode plate between different working stations. A discharging apparatus is disposed in the rear of the peeling off apparatus and devised to receive a cathode plate sent out from the peeling off apparatus without having its electrodeposited metal plate peeled off successfully by the peeling off apparatus. The discharge apparatus is activated by a means for sensing success or failure of the peeling-off of the metal plate when the operation of the peeling off apparatus is over.

Abstract: Method of coloring an organic material with the naphthacenequinone derivative having the formula: ##STR1## wherein X is --OH, --NH.sub.2, --NHR" wherein R" is lower alkyl or aryl group, Y is --H, --Cl, --OH, --OR'" --SR'", --NH.sub.2, --NHR'", methyl, cyclohexyl or benzyl group wherein R'" is aryl or alkyl which may be substituted with lower alkoxy or lower alkylthio group, R and R' is --H, --Cl, --CH.sub.3, --OCH.sub.3, phenyl group or may together form a benzene ring. Colored organic materials with the compound exhibit brilliant nuance with characteristic fluorescence.

Abstract: A synergistic herbicidal composition for use in paddy fields comprising a mixture of .alpha.-(.beta.-naphthoxy)-propionanilide and a thiocarbamate compound.

Abstract: Sealing apparatus used for sealing the gap between flanges which comprises an O-ring engaged with a circular groove formed in the coupling surface of one of the flanges and two backup rings engaged with the groove and the O-ring, each of the backup rings having an inclined surface to be axially urged by the O-ring whereby the upper backup ring is moved according to the gap to close it.

Abstract: Method of coloring an organic material with a naphthacenequinone derivative having the formula: ##STR1## wherein R.sub.1 and R.sub.3 are members selected from the group consisting of hydrogen, chlorine, hydroxyl or amino, R.sub.2 is a member selected from the group consisting of carboxyl or its derivative, sulfonamide, sulfonate and phenylsulfonate, X is a member selected from the group consisting of hydrazo and aromatic diamino.Organic materials with the compound have a brilliant hue with characteristic fluorescence and high sublimation fastness.

Abstract: A method for economically concentrating an acrylamide aqueous solution by catalytic hydration without substantial deterioration in the product. According to the method, an acrylamide aqueous solution obtained from catalytic hydration, is concentrated by distillation while maintaining the solution in good contact with at least 0.1 mole. or more of air per mole of water distilled from the acrylamide aqueous solution.

Abstract: Method of coloring an organic material with an asymmetric thioindigoid compound having the formula: ##STR1## wherein R is a hydrogen atom or lower alkyl group; R' is a member selected from the group consisting of a hydrogen atom, halogen atoms, lower alkyl groups, lower alkoxy groups, sulfonamide group or its derivatives, and aryl sulfonate groups or their derivatives; R" is a hydrogen atom or methyl group; and X is an oxygen atom or sulfur atom. Organic materials colored with the compound have a brilliant nuance with characteristic fluorescence.

Abstract: 1-Carbamoyl-5-fluorouracil derivatives represented by the formula ##STR1## wherein R.sub.1 represents methyl, ethyl, phenyl or cyclohexyl and R.sub.2 represents hydrogen or is the same as R.sub.1 are effective anti-metabolites useful in treating lymphatic leukemia L1210, sarcoma 180A and Ehrlich ascites carcinoma in mice.

Abstract: A process is disclosed for manufacturing needle coke, which process involves the steps of comminuting a coal, dispersing it in a suitable solvent, subjecting the dispersion to hydrogenolysis liquefaction at 360.degree.-480.degree. C and 1-150 Kg/Cm.sup.2 H.sub.2 pressure, distilling the resultant ashless coal solution at 250.degree.-600.degree. C to remove impurities, and unreacted coal, and coking selected distillate fractions in a conventional coker.