Abstract: Described herein are imidazole derivatives having a specific structure and satisfactory as antiepileptics from the standpoint of the strength of action, prolonged action and side effects as well as their preparation processes.

Abstract: N-alkyl amino phenols, such as N-ethyl-m-amino phenol are produced in high yield and with high purity by reacting a divalent phenol, such as resorcinol, with an alkylamine, such as ethylamine, in the absence of catalyst and solvent, at a temperature of 120.degree.-210.degree. C. under elevated pressure in an inert gas atmosphere. In a first embodiment, the resulting reaction mixture is acidified to convert the N-alkylaminophenol to its water soluble salt and the resulting aqueous layer is separated from the oily layer. The aqueous layer is rendered alkaline to liberate N-alkylaminophenol as an oily layer. The N-alkyl-aminophenol oily layer is then separated from the aqueous layer and distilled.

Abstract: A packaging container for acrylamide crystals comprising (a) an inner bag consisting of a packaging material having moisture permeability in order to package acrylamide crystals, (b) an interlayer bag consisting of a packaging material having impermeability to atmospheric water-vapor and a gas-barrier property, and, if necessary, (c) an outer bag consisting of an exterior material, and a method for packaging acrylamide crystal by using the above container, is disclosed. According to the present invention, contamination of foreign particles such as lint and dust or tackiness due to moisture can be prevented in transportation and storage.

Abstract: A substituted aryloxyurea of the formula: ##STR1## wherein Ar represents ##STR2## in which X.sup.7 represents a hydrogen atom, a halogen atom, a cyano group, a lower alkoxy group or a trifluoromethyl group, andR.sup.1 and R.sup.2 together form together with carbon and the nitrogen atom to which they are bonded a 4-8 membered heterocyclic ring.The substituted aryloxyureas exhibit an excellent herbicidal efficacy against weeds when applied, for example, to the weeds in a wide range of period from a preemergence stage to a growth stage.The substituted aryloxyureas of the invention have the excellent advantage of maintaining high safety on crops or crop plants in spite of their herbicidal efficacy.

Abstract: A process for the preparation of an indigo compound which comprises reacting a corresponding indole compound having no substituent at the 2- and 3-positions with a percarboxylic acid in the presence of an alcohol solvent, or with heating over 60.degree. C. in the presence of an aprotic solvent.

Abstract: Chlorine is produced by reacting hydrogen chloride and oxygen in the presence of a chromium oxide catalyst in a reactor whose catalyst-contacting part is lined with one of lining materials represented by the following general formula (I):M.sub.a X.sub.b (I)wherein M can be boron, aluminum, silicon, titanium, zirconium or chromium, X denotes oxygen, nitrogen or carbon, a is an integer of 1-2 and b stands for an integer of 1-3 or with a mixture of at least two of the lining materials. The above process and reactor are effective in maintaining the activity of the catalyst.

Abstract: Method and apparatus for manufacturing span bond nonwoven fabrics formed from continuous fibers which are small in fineness and high in strength and manufactured by the steps of spinning for obtaining a continuously drawn fiber by blowing a molten resin extruded out of a spinning nozzle by heated gases blown out of the periphery of the spinning nozzle; drawing for further drawing the obtained continuously drawn fiber by an air stream produced due to a pressure difference of gases; the extreme end of the nozzle being a distance of 0.5 to 2 m from the place where further drawing occurs; collecting for collection the drawn continuous fiber to collect the fibers; and uniting for uniting the collected continuous fibers together to form nonwoven fabrics.

Abstract: There is provided an injection molding apparatus of the screw in-line type which has a screw having the following structural features and is used for injection-molding a high-nitryl resin.(1) A compression ratio is set to a value of 1.8 to 2.5.(2) Ratios of the lengths of the feed section, the compression section, and the metering section are set to[1 to 1.5]:[1.8 to 2.8]:[1].(3) A depth T (unit:mm) of groove of the metering section in relation to an inner diameter D (unit:mm) of the cylinder is set toT.gtoreq.0.057D-0.2.(4) A radius of curvature R (unit:mm) of the arc surface of the rear side corner portion which is formed between a screw shaft and a flight in relation to the inner diameter D (unit:mm) of the cylinder is set toR.gtoreq.0.36D+2.0.

Abstract: Crude tPA containing, as an impurity, a protein which is reactive with an anti-human tPA antibody and has a molecular weight of 110,000.+-.20,000 daltons is purified by bringing the crude tPA into close contact with an affinity reagent containing an immobilized Kunitz inhibitor which is produced in seeds of Erythrina latissima and other Erythrina plants and acts as an inhibitor on trypsin, plasmin and tPA but does not act on urokinase, so that tPA is collected selectively.

Abstract: Sinterable crystalline aluminum nitride powder is produced by reacting alkyl aluminum with ammonia in a gas phase to produce an amorphous aluminum nitride presursor powder, and subjecting the precursor powder to a primary calcination in a reducing gas containing at least 20% (vol.) ammonia at 600.degree. C. to 1300.degree. C., and then subjecting the calcined aluminum nitride to a secondary calination in an inert gas or a reducing gas at 1400.degree.-1750.degree. C.

Abstract: The invention provides a heat-bonding blade and a heat-bonding apparatus capable of heat-bonding thermoplastic resin sheets, in particular non-woven cloth sheets of thermoplastic resin, with or without heat-cutting these sheets. A first-type heat-bonding blade intended for heat-cutting/bonding has pressing members provided on both sides of the blade. The distance between the lower end of each pressing member and the edge of the blade is determined such that the pressing members lightly press the sheets of the thermoplastic resins when the edge of the blade has pressed into the sheets.A second-type heat-bonding blade intended only for heat-bonding the sheets is provided with a contact surface on the edge thereof. The contact surface is embossed so as to have a multiplicity of emboss projections. This type of heat-bonding blade may be formed by removing the pressing members from the blade of the first type and providing an embossed contact surface on the edge of the same.

Abstract: Disclosed herein is a sulfo-group-containing heat-resistant high-molecular material containing sulfo groups in an amount of not less than 1 wt. % in terms of sulfur content and having an ammonia adsorptivity of not less than 10 mg/g, formed by heat-treating at a temperature of 250.degree.-500.degree. C. a starting composition composed mainly of a sulfo-group-containing aromatic high-molecular compound which comprises unit constituents of an aromatic sulfonic acid compound or a salt thereof and is soluble in aqueous solvents, and a preparation process thereof.

Abstract: A non-amalgamated zinc alloy powder for use in an alkaline cell which comprises 1 ppm or less of iron and an elemental component selected from among the following combinations (1) to (5):(1) 0.01 to 0.5% by weight of bismuth, 0.01 to 0.5% by weight of indium and 0.01 to 0.5% by weight of lead,(2) 0.01 to 0.5% by weight of bismuth, 0.01 to 0.5% by weight of indium and 0.01 to 0.5% by weight of calcium,(3) 0.01 to 0.5% by weight of lead and 0 to 1.0% by weight in total of at least one member selected from among bismuth, aluminum and calcium,(4) 0.01 to 0.5% by weight of calcium, 0.01 to 0.5% by weight of bismuth and 0 to 0.5% by weight of aluminum, and(5) 0.01 to 0.5% by weight of lead, 0.01 to 0.5% by weight of indium, 0.01 to 0.5% by weight of calcium and 0 to 0.5% by weight of aluminum, and which can greatly suppress the evolution of hydrogen gas and maintain the discharge performance on a practical level, and a method for the production of the same.

Abstract: Disclosed herein is a process for the electroreduction of aromatic acids comprising reducing an aromatic carboxylic acid electrolytically in an aqueous acidic solution by the use of a material of a low oxygen overvoltage as the anode for oxygen generation, thereby producing the corresponding benzyl alcohol in high yield in a single electrolytic apparatus.

Abstract: Nonwoven fabrics formed, in spun-bonding process, of crimped bi-component composite filaments composed of (A) a first component composed of (a) 3 to 40% by weight of a propylene/ethylene random copolymer having a melting point, determined from DSC main peaks of 110.degree. to 150.degree. C. and a melt flow rate [ASTM D-1238 (L)] of not more than 15 g/10 minutes and (b) 97 to 60% by weight of polyethylene having a melt flow rate [ASTM-D-1238 (E)] of at least 15 g/10 minutes, and (B) a second component comprising crystalline polypropylene having a melt flow rate [ASTM D-1238 (L)] of at least 10 g/10 min. as a main component, have a soft feel and are suitable for use as, e.g., disposable bed sheets and liners for diapers.

Abstract: A thermosensitive recording paper is disclosed useful for thermosensitive recording which comprises a substrate, a thermosensitive recording layer and an undercoat layer interposed therebetween which contains 10 to 40 parts of a binder and 60 to 90 parts by weight of crosslinked polymer microparticles having a particle diameter of 0.2 to 5.0 .mu.m and a ratio of weight average diameter to number average diameter of 2.0 or less.

Abstract: A laminate comprising(A) a layer of a 4-methyl-1-pentene polymer,(B) a layer of a polymer composition comprising(a) 40 to 98% by weight of an ethylene/alpha-olefin random copolymer containing 30 to 95 mole % of ethylene units,(b) 0.1 to 20% by weight of a polyolefin modified with an unsaturated carboxylic acid or its derivative, and(c) 1 to 50% by weight of a tackifier, the proportions of components (a), (b) and (c) being based on the total weight of components (a), (b) and (c), and(C) a layer of a thermoplastic resin, the layers (A), (B) and (C) being laminated in the sequence stated.

Abstract: A setting-up apparatus of over-centering coil springs comprises a base plate having a first opening, an oscillating member having a second opening and journalled on the base plate so as to be displaced between a first position and a second position, a coil spring provided with a first leg engaged with said first opening and a second leg engaged with said second opening in order to hold said oscillating member at either one of said first position and the second position separated by a centering dead point of the oscillating member, and a communication opening communicated with said first opening. The communication opening is adapted to receive the first leg of the coil spring without compression of the coil spring when the second leg is engaged with the second opening which doesn't have the communication opening.

Abstract: A fluidized bed combustion method for burning wastes using a fluidized bed furnace is not affected by a fluctuation in the quantity and quality of wastes fed into the furnace, if any, thereby preventing CO gas, etc. from discharging out of the furnace. The furnace has a number of air-diffusing tubes for feeding primary air to the fluidized bed in parallel with each other at the bottom of the fluidized bed, and a free space part formed above the fluidized bed for burning unburnt matter with a secondary air. Each air-diffusing tube has a number of nozzles provided along the axis of the tube and a primary air control device including an open-close damper for controlling the quantity of air to be fed through the tube. The primary air is fed into the fluidized bed through the air-diffusing tubes one after another according to a predetermined open-close pattern by the primary air control device so that the ratio of the air quantity Uo to the minimum fluidizing air quantity Umf (Uo/Umf) is in the range of 1.

Abstract: The present invention relates to a novel polyurethane resin, a foam prepared from the resin, a preparation process of the foam, and preparation process of a rigid polyurethane foam composite having a face material. The primary object of the present invention is to provide a rigid polyurethane foam and a rigid polyurethane foam composite fitted with a face material which are prepared by using a hydrochlorofluorocarbon foaming agent having very low public hazards such as ozone layer destruction and green house phenomenon of the earth.The above object can be achieved by using a combination of a polyether polyol initiated from a phenol resin with an alkanolamine or an aliphatic polyhydroxy compound in the production of rigid polyurethane foams.Foams thus obtained have equivalent properties to those of foams obtained by using chlorofluorocarbons (CFC) which are conventional foaming agents.