Abstract: The present invention relates to a working method of breaking up a ship, particularly a large ship, and is characterized by cutting the hull to shorten the length thereof as it is floating on the sea, and more particularly characterized by, on the cutting of the hull, inserting a buoyancy body under the stem portion or the stern portion to trim the hull and floating up said portion and locating there a marine workshop, drawing the hull into the marine workshop while performing breaking up the hull. According to the present invention, it is possible to break up a hull without special harbor facilities and even at locations such as the lee of island and other position where there is no harbor facilities. Also, since the hull is drawn in the marine workshop and broken up to shorten the length of the hull, the working is greatly simplified compared with a prior method wherein the hull is broken up to shorten the height thereof, and as a result the working period can be shortened.

Abstract: Highly stereoregular polymers or copolymers of .alpha.-olefins containing at least 3 carbon atoms are prepared in high yields by polymerizing or copolymerizing the .alpha.-olefins in the presence of a catalyst composed of (a) an improved solid transition metal catalyst component prepared by reacting (1) a magnesium-containing reaction product derived from a member of the group consisting of (i) a magnesium halide, (ii) an active hydrogen-containing compound, (iii) an organic acid ester and (iv) a silicon or tin compound containing at least one halogen atom or hydrocarbon group bonded directly to silicon or tin with (2) a titanium compound, and (b) an organometallic compound of a metal selected from aluminum, magnesium and zinc.

Abstract: A process is disclosed for preventing oxidative coloring while maintaining good solderability of copper foil wherein a thin layer of tin or a combination of tin and zinc alloy is electro-deposited on the surface of the shiny side of copper foil and the tin or binary alloy diffuses into the surface portion of electrodeposited copper foil by heating, such as drying, baking or lamination under heat and pressure. By virtue of an extremely thin layer of the tin alloy thus formed, the bright tone of the copper surface is maintained during storage or during subsequent lamination of the foil, and the solderability thereof is also improved.

Abstract: Carbon dioxide is reacted with a stoichiometric excess of ammonia at urea synthesis temperatures and pressures in a urea synthesis zone with the mol ratio of ammonia to carbon dioxide being in the range of from 5:1 to 12:1. The urea synthesis effluent from the urea synthesis zone is pressurized to a pressure higher than the urea synthesis pressure, and heated to a temperature higher than the urea synthesis temperature in a separation zone, wherein unreacted ammonium carbamate and excess ammonia contained in said urea synthesis effluent are separated from urea synthesis effluent in the form of a gaseous mixture of ammonia and carbon dioxide. The thus separated gaseous mixture of ammonia and carbon dioxide is recycled to said urea synthesis zone by means of the pressure difference.

Abstract: A process for continuously producing anhydrous sodium dithionite in the form of large granules which comprises reacting formic acid, sodium formate, sodium hydroxide and sulfurous acid anhydride in hydrous methanol using a multi-stage reaction apparatus, wherein all the required amounts of the formic acid or sodium formate, sodium hydroxide, methanol and water, and at least 60%, based on the required amount, of sulfurous acid anhydride are introduced into a first reactor, and the residence time in the first reactor is adjusted so that the conversion of the sulfurous acid anhydride to anhydrous sodium dithionite is within the range of 25 to 50%; the remainder of the sulfurous acid anhydride is introduced into a second reactor; and the reaction temperature in any given reactor is maintained at a point not lower than the reaction temperature in the immediately preceding reactor.

Abstract: A process is described for preparing aromatic isocyanates by contacting an aromatic carbamate of the formula R(NHCO.sub.2 R')n at 150.degree.-350.degree. C under reduced pressure with one or more metal or metal compound catalysts dissolved in an inert solvent. In the formula R is a divalent aromatic, R' is a monovalent aliphatic, alicyclic or aromatic with at most 8 carbon atoms and n is 1 or 2. The metal is dissolved in a concentration of at least 1/1000% by weight of the solvent. The vapors of the resulting aromatic isocyanate and alcohol or phenol are fractionally condensed under reduced pressure and the aromatic isocyanate is separately collected.

Abstract: A process for the production of alcohols by the direct hydration of an olefin with water under liquid phase hydration conditions and in the presence of a catalytic amount of a sulfonic acid catalyst represented by the general formulae (1) or (2)ACF.sub.2 SO.sub.3 H (1)b(cf.sub.2 so.sub.3 h).sub.n (2)wherein A represents hydrogen, halogen, a sulfonic radical, a sulfodifluoromethyl radical or a monovalent unsubstituted aliphatic, alicyclic or aromatic residue consisting of hydrocarbon or fluorohydrocarbon radicals containing less than 20 carbon atoms and B represents a di-, tri- or tetravalent unsubstituted aliphatic, alicyclic or aromatic residue consisting of hydrocarbon or fluorohydrocarbon radicals containing less than 20 carbon atoms in direct corresponding to the value of n being 2, 3 or 4.

Abstract: Aromatic urethanes can be produced in exceedingly improved yield when an aromatic nitro compound, an organic compound containing hydroxyl groups, and carbon monoxide are reacted in the presence of a catalyst composed of metallic (elemental) selenium or a selenium compound and a base serving as promoter, to which reaction system an aromatic amino compound and/or an aromatic urea compound which will be secondarily produced by the reaction has been previously added in order to suppress side reactions. For instance, when nitrobenzene, methanol and carbon monoxide are interacted in the presence of metallic selenium and triethylenediamine, the conversion of nitrobenzene is 68% and the percentage of formed methyl N-phenylcarbamate to the interacted nitrobenzene is 80%, whereas when the reaction is effected under the same reaction conditions indicated above with addition to the reaction system of aniline in an amount of about 15 wt.

Abstract: A press apparatus which comprises a press body formed of a bed and a ram, fitted with an upper die; an auxiliary bed disposed adjacent to the bed and designed to be rotated at a prescribed angle thereto; a rotation mechanism for rotating the auxiliary bed; a bolster reciprocating along both beds; a shifting mechanism for effecting the reciprocation of the bolster; a lock mechanism designed normally to keep both beds engaged with each other, thereby preventing the rotation of the auxiliary bed, when the bolster is shifted to that prescribed point on the auxiliary bed at which the rotation axes of both bolster and auxiliary bed are aligned with each other, to disengage both beds from each other, thereby allowing the rotation of the auxiliary bed and bolster for complete removal of a press-worked product, for example a trimmed product, or scrap (including runner refuse) attached to a lower die and a forwarding mechanism designed to send forth a press-worked product taken off by a product-pushing cylinder to the

Abstract: A process for preparing a highly stereoregular olefin polymer or copolymer in high yield and with good reproducibility of quality and yield, which comprises polymerizing or copolymerizing an olefin containing at least 3 carbon atoms in the presence of a catalyst comprising(a) a solid titanium catalyst component obtained by reacting a solid magnesium component with a titanium compound in the absence of a free organometallic compound of a metal of Groups I to III of the periodic table and separating the solid component of the resulting reaction product, said magnesium component being obtained by separating a solid from a suspension of a reaction product derived from (i) a magnesium dihalide, (ii) an active hydrogen-containing organic compound, (iii) an organic acid ester and (iv) an organometallic compound of a metal of Groups I to III of the periodic table, and(b) an organometallic compound of a metal of Groups I to III of the periodic table.

Abstract: The present invention provides a process for preventing the generation of a mist of electrolyte in the electrowinning metal recovery which is carried out by using an aqueous solution of a metal salt as an electrolyte and an insoluble electrode, said process being characterized in that said electrode is surrounded with an inert woven fabric screen over the area of the electrode plate from a position above the level of electrolyte to the bottom in parallel with and in the vicinity of the electrode plate; and the electrode for use in recovering a metal by the electrolysis.

Abstract: In a door latch system having a metal latching member engageable with a metal striker, a noise suppressor of resilient material is dovetail jointed to the latching member, in such a position thereon that the striker makes noiseless contact therewith upon closure of the door. The latch further comprises a stop of resilient material arranged for contact with the striker in a fully latched position, and a guide of relatively rigid, wear-resistant material extending along a striker guideway in the main body of the latch.

Abstract: Olefins are polymerized with superior activity, using a catalyst composition consisting essentially of (a) a transition metal catalyst component prepared by reacting a titanium or vanadium compound with the reaction product formed between an alcohol-adduct of a magnesium dihalide solid carrier and an organometallic compound or a metal of groups I to III of the periodic table, and (b) an organometallic compound catalyst component of a metal of Groups I to III of the periodic table.

Abstract: In a process for polymerizing or copolymerizing olefins in the presence of a catalyst composed of (a) a transition metal catalyst component prepared by reacting a titanium or vanadium compound and a solid carrier of a magnesium compound and (b) an organometallic compound catalyst component of a metal of groups I to III of the periodic table; the improvement wherein said transition metal catalyst component is a reaction product of a solid carrier which is an adduct formed between a magnesium dihalide and an electron donor, a compound of Si or Sn selected from the group consisting of their halogen and organohalogen compounds and a titanium or vanadium compound.

Abstract: 1-Carbamoyl-5-fluorouracil derivatives represented by the formula ##STR1## wherein R represents alkyl containing 3-8 carbon atoms are effective oral anti-tumor agents with low toxicity.

Abstract: A method for treating a cyanide-containing waste water by mixing the waste water with a treating agent containing a carbonyl compound such as formaldehyde and subjecting said mixture to an elevated temperature in an atmosphere containing oxygen to evaporate water and volatile materials therefrom, decompose the cyanide-containing component thereof and burn the decomposed cyanide component and other combustible materials to provide exhaust gases of substantially reduced cyano component. Metals contained in the waste water in the form of noxious compounds are also converted into harmless forms and recovered and no toxic components are released into the atmosphere or discharged as waste. An apparatus useful in carrying out the method is also disclosed.

Abstract: The blast furnace in the present invention comprises a V-shaped or an inclined hearth, tuyeres disposed along said hearth, a tap hole for discharging matte and/or slag, said tap hole being disposed at the lowest part of the hearth, and dampers having V-shaped or inclined fore end, each of said dampers being disposed to agree with said tuyeres. The present blast furnace, when employed for smelting by feeding briquetted Zn bearing materials as the material thereto and blowing preheated air therein through the tuyeres disposed along the hearth, displays an improved smelting efficiency in separating and recovering volatile valuable metals and non-volatile valuable metals.

Abstract: A method for the preparation of a halogenated aromatic amine, wherein a halogenated aromatic nitro compound is hydrogenated in liquid phase in the presence of a platinum-base catalyst to obtain a corresponding halogenated aromatic amine, the hydrogenation being carried out in the presence of an alkylmonoamine, an alicyclic amine or a polyalkylenepolyamine. The presence of the amine well suppresses a dehalogenation reaction which would otherwise be involved, so that not only a high purity halogenated aromatic amine is obtained, but also corrosion of a reactor is prevented.

Abstract: A process for preparing a catalyst component supported on a carrier which comprises contacting a titanium tetrahalide in the liquid or gaseous phase with a solid in the absence of mechanical pulverization, said solid being obtained by mechanically pulverizing specified combinations of components selected from the group consisting of a magnesium dihalide component selected from magnesium dihalides and adducts thereof with monocyclic aromatic monocarboxylic acid esters; a monocyclic aromatic monocarboxylic ester; and a titanium component selected from titanium compounds of the formula Ti(OR).sub.n X.sub.4-n wherein R is alkyl or optionally substituted phenyl, X is halogen, and n is an integer of 0 to 4 and complexes thereof with monocyclic aromatic monocarboxylic acid esters, the amounts of the magnesium dihalide (a), the monocyclic aromatic monocarboxylic acid ester (b), and the titanium compound (c) being selected such that the molar ratio of (a):(b):(c) is 1: (not less than 0.005):(100 to 0.001).

Abstract: A seat lock device which comprises a lock unit fixed on each side of a back rest swingable back and forth and at a point spaced from a seat shaft and a plurality of strikers engageable with the lock unit, and wherein the lock unit includes elongate grooves engageable with the strikers and lock grooves; a circular actuating unit provided with elongate grooves engageable with the strikers and lock grooves, held at a free position ready for engagement with the striker when the elongate groove remains disengaged from the striker and rotated when the elongate groove is engaged with the striker; a latch for locking the lock groove by engagement therewith when the circular actuating unit is rotated to a lock position; a gate mechanism for preventing the lock action of the latch when the elongate groove remains disengaged from the striker; and a releasing mechanism for releasing the lock action of the latch, thereby enabling the back rest to be locked in an inclined position corresponding to any of the strikers engag