Abstract: The present invention provides pre-expanded noncrosslinked polyethylene resin beads which are made of a mixed resin, as a base resin, comprising a high-pressure-process low-density polyethylene, a linear low-density polyethylene, and a linear high-density polyethylene and, when analyzed with a differential scanning calorimeter (DSC), give a fusion endothermic curve which is a mountain-shaped curve having a single peak and in which, when the peak point of the mountain-shaped curve is referred to as A, the point of intersection of the perpendicular line drawn to the temperature axis from A and the base line of the fusion endothermic curve is referred to as B, and the two points at which the straight line drawn through the point C interiorly dividing segment AB in the perpendicular line in a ratio of 9:1 and parallel to the temperature axis intersects the fusion endothermic curve are referred to as D and E, then that temperature width of the mountain-shaped curve part which is the length of segment DE is 15.

Abstract: The present invention provides an anisotropically porous membrane which is obtained according to a wet process, which comprises a substantially non-sulfonated aromatic polyether ketone having a crystallinity of 10 percent by weight or higher, and which has open pores having an average pore diameter of 0.02 to 30.00 .mu.m on both surfaces of said membrane at an open pore ratio of 7 to 90 percent. In accordance with the present invention, a porous crystalline aromatic polyether ketone membrane is provided which is excellent in heat resistance, chemical resistance, water resistance, water permeability and a balance of water permeability and fractionating characteristics.

Abstract: The present invention relates to a binder for a building structure comprising a main ingredient, a curing agent and an accelerator for the main ingredient; the main ingredient being an epoxy acrylate resin diluted with a reactive monomer comprising a multifunctional ester of carboxylic acid and alcohol, at least one of which contains a reactive double bond; the curing agent being an organic peroxide; and the accelerator of the main ingredient being tertiary aromatic amines containing a hydroxyl group in a nitrogen substituent.

Abstract: The present invention is a process for producing an unsaturated nitrile such as acrylonitrile or methacrylonitrile by ammoxidation of an organic compound such as propylene, isobutene or tertiary butanol. The process comprises carrying out the ammoxidation such that the organic acid/unreacted ammonia ratio in an ammoxidation product gas is controlled to remain within the range from 0.8 to 3.0 inclusive in a reactor, introducing the ammoxidation product gas into a quench tower, and reacting in the tower the unreacted ammonia with the organic acid produced in a reactor, to fix the unreacted ammonia as an ammonium salt of the organic acid.

Abstract: A cellulose multifilament yarn which is a lyocell multifilament yarn and has a breaking tenacity of 2.8-4.0 g/d and a breaking elongation of 13-20% both as dried and which gives a tenacity-elongation curve passing a tenacity range of 0.2-1.0 g/d at an elongation of 5% and a tenacity range of 0.4-2.5 g/d at an elongation of 10%.

Abstract: The present invention is directed to a process for manufacturing a polyether ether ketone (PEEK) membrane which may be used for ultrafiltration or microfiltration at high temperatures. In this process for manufacturing a non-sulfonated PEEK membrane which comprises dissolving PEEK in a solvent to obtain a membrane forming stock solution, forming the stock solution into a desired shape and bringing the formed stock solution in contact with a coagulating liquid capable of coagulating PEEK, the key features involve using concentrated sulfuric acid as the solvent, dissolving PEEK therein to prepare the stock solution and keeping the stock solution at 15 degrees C or lower until initiation of membrane formation.

Abstract: An injection compression molding method is characterized in that a resin is injected from a resin gate provided near a recess portion of a mold corresponding to a thick rib portion, gas is injected from the thick rib portion before the mold is closed and compressed, and thereafter the resin is made to flow back from the resin gate to an injection nozzle while the mold is closed and compressed.

Abstract: Disclosed is a method for quantitatively determining an antibody, contained in a biological sample, having the ability to inhibit the activity of a reverse transcriptase derived from an HIV, comprising: reacting a hybridization product, immobilized on a solid phase, of a primer consisting essentially of oligodeoxythymine nucleotide and an RNA template consisting essentially of adenine ribopolynucleotide with a reverse transcriptase derived from HIV, to thereby bind the reverse transcriptase to the hybridization product; conducting a synthesis of a DNA complementary to the RNA template from a deoxymononucleotide triphosphate in the presence of the reverse transcriptase activity-inhibiting antibody; and measuring the amount of the synthesized DNA and quantitatively determining the above-mentioned antibody, based on the measured amount of the synthesized DNA.

Abstract: An olefin polymerization catalyst comprising (A) a solid catalyst component and (B) an organometallic compound component. The solid catalyst component (A) is prepared by a process comprising the steps of:(I) obtaining a solid (A-1) by reacting:(i) an organomagnesium component soluble in a hydrocarbon solvent and represented by the formula (M.sup.1).sub..alpha. (Mg).sub..beta. (R.sup.1).sub.p (R.sup.2).sub.q (OR.sup.3).sub.r ; and(ii) an Si--H bond-containing chlorosilane compound represented by the formula: H.sub.a SiCl.sub.b R.sup.4.sub.4-(a+b), in a ratio of from 0.01 to 100 mol (ii) per mol (i);(II) reacting the solid (A-1) with an alcohol (A-2) in a ratio of from 0.05 to 20 mol of the alcohol per mol of C--Mg bonds contained in the solid (A-1), to form a reaction product; and(III) reacting the reaction product with a titanium compound (A-4). The solid catalyst component (A) is adjusted to have an alkoxy group/titanium molar ratio of 2.4 or lower and an alkoxy group/magnesium molar ratio of 0.15 or lower.

Abstract: A photosensitive resin composition for cast molding, which has an ultraviolet transmittance of 0.05-5% as measured at a 1-mm thickness.

Abstract: Disclosed is a novel non-aqueous battery comprising a spirally wound electrode assembly comprising a cathode, an anode and a separator which are spirally wound so that the cathode and anode active material layers are arranged opposite to each other through the separator, wherein the battery has a cathode-equipotential metallic segment provided in association with the cathode, wherein the segment has on at least one side thereof a portion free of a cathode active material layer to provide a cathode-equipotential, exposed metallic portion (.alpha.) longitudinally extending over a length of one wind or more of the spirally wound structure, the portion (.alpha.) being positioned opposite to an anode-equipotential, exposed metallic portion (.beta.) which is provided, in association with the anode, over a length of one wind or more of the spirally wound structure.

Abstract: A process for producing a cycloolefin by partial hydrogenation of a monocyclic aromatic hydrocarbon with hydrogen in the presence of a ruthenium catalyst, water and a metal sulfate, wherein the hydrogenation is conducted while changing the concentration of the metal sulfate dissolved in an aqueous phase in which the catalyst is present.

Abstract: Disclosed is a method for producing a homogeneous polycarbonate composition, which comprises feeding a first polycarbonate in a molten state to a first inlet of an extruder, while feeding a mixture of an second polycarbonate and at least one thermal stabilizer to a second inlet of the extruder, wherein the second inlet is disposed downstream of the first inlet, and extruding the first polycarbonate and the mixture through the extruder. By the method of the present invention, additives can be uniformly dispersed in a molten polycarbonate without dissolving the additives in a solvent, and a polycarbonate composition of the polycarbonate and the additive, which has various excellent properties, such as excellent thermal stability, can be produced efficiently.

Abstract: An outer surface of an object 23 is irradiated with visible light from a light source 21, and the reflected light is acquired by a TV camera 24. A two-dimensional image with gradation is Fourier transformed by an image analyzer 20. The brightness and darkness of the image are bipolarized using an emphasis coefficient in a predetermined wavelength range in the process of Fourier transform. The bright regions and dark regions forming closed regions are calculated separately as regions representing gloss irregularity or printing unevenness, thereby outputting a statistical parameter of the areas as a measured result.

Abstract: Disclosed is a high density ethylene polymer comprising a homopolymer of ethylene, or a copolymer of ethylene with at least one comonomer selected from an .alpha.-olefin, a cyclic olefin, and linear, branched and cyclic dienes, and having the following properties: (a) a density d (g/cm.sup.3) of from 0.951 to 0.980; (b) an M.sub.I (g/10 minutes) of more than 3 and not more than 100 (M.sub.I is the melt flow rate as measured at 190.degree. C. under a load of 2.16 kg); (c) the polymer satisfying: log a.sub.kI .gtoreq.-0.844 log M.sub.I +1.462 [M.sub.I is as defined above, and a.sub.kI is the Izod impact strength (kgf.multidot.cm/cm.sup.2)]; (d) the polymer satisfying: log M.sub.IR .gtoreq.-0.094 log M.sub.I +1.520 [M.sub.I is as defined above, and M.sub.IR is the H.sub.MI /M.sub.I ratio in which H.sub.MI (g/10 minutes) is the melt flow rate as measured at 190.degree. C. under a load of 21.6 kg and M.sub.I is as defined above]; and wherein (e) the d (g/cm.sup.3) and the M.sub.I (g/10 minutes) satisfy: d.gtoreq.

Abstract: Process for producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation at a temperature in the range of from 380 to 500.degree. C. in a fluidized-bed reactor containing a catalyst composition preheated to a temperature of not lower than 300.degree. C.

Abstract: Disclosed is a method for the injection molding of a resin to produce a shaped resin article having a thick portion biasedly, wherein an excess filling of the cavity of a mold is effected to form a molten resin mass having opposite, first and second surfaces respectively facing opposite, first and second inner walls of the mold cavity, the mold having a specific structure in which a gas-release passage is formed in association with the mold cavity and with a mating surface of the mold, which gas-release passage has an inner opening in an inner wall surface of the mold cavity and communicates with the outside of the mold, and a pressurized gas is introduced into the mold cavity on a side of the first surface of the molten resin mass, thereby forming a closed space which is filled with the pressurized gas and separated from the gas-release passage through the molten resin mass, so that the pressurized gas filled in the closed space urges the second surface of the molten resin mass to be pressed against the seco

Abstract: A method for producing a cycloolefin and a cycloalkane, which method comprises: a step of hydrogenating a monocyclic aromatic hydrocarbon under an acidic condition in the presence of a catalyst composition, (i) wherein said catalyst composition is a slurry which comprises a ruthenium catalyst, water and zinc sulfate, and which is preserved, prior to being used in said hydrogenation reaction, under a high temperature and high pressure hydrogen atmosphere of from 100 to 200.degree. C. and from 1 to 100 atm for 1 hour or more, and (ii) wherein said hydrogenation reaction is conducted under a controlled pressure, while maintaining a phase separated state of: (a) an oil phase comprising, as main components, the starting materials and the products; and (b) a water phase comprising water as a main component, to thereby control a formation molar ratio of the cycloolefin and the cycloalkane to be formed.

Abstract: Disclosed is a method for producing methyl methacrylate, which comprises: subjecting isobutylene and/or tert-butanol to a gas phase catalytic oxidation reaction with molecular oxygen to thereby obtain gas (a) containing methacrolein gas and steam; introducing gas (a) and a methacrolein/methanol liquid mixture (I) into a dehydration tower at a lower portion thereof and at an upper portion thereof, respectively, thereby allowing the liquid mixture (I) to flow downwardly in the dehydration tower and contact countercurrently with the gas (a) in the dehydration tower, to thereby obtain a dehydrated gas mixture (b) containing methacrolein gas and methanol gas; introducing the dehydrated gas mixture (b) and a methacrolein/methanol liquid mixture (II) into an absorption tower at a lower portion thereof and at an upper portion thereof, respectively, thereby allowing the liquid mixture (II) to flow downwardly and contact countercurrently with the dehydrated gas mixture (b) in the absorption tower, thereby obtaining a m

Abstract: The present invention provides a catalyst to convert hydrocarbons, which comprises a zeolite containing substantially no proton and having an intermediate pore diameter, a molar ratio of SiO.sub.2 to Al.sub.2 O.sub.3 of at least 20 and one or more metals belonging to Group Ib of the Periodic Table. Further, the present invention provides a method to catalytically convert hydrocarbons by using the above catalyst. By means of the present invention, there can be provided a stable catalyst for conversion of hydrocarbons, which is capable of obtaining olefins containing ethylene as a main component and monocyclic aromatic hydrocarbons with good balance and a high yield, and which is hardly deteriorated by steam having a high temperature.