Abstract: A method for producing aryl alkyl hydroperoxides which comprises selectively oxidizing an aryl alkyl hydrocarbon having the formula: ##STR1## wherein P and Q are hydrogen or an alkyl and may be the same or different from each other; x is an integer of 1-3; and Ar is an aromatic hydrocarbon group having a valence of x, with an oxygen-containing gas in the presence of a transition metal complex which contains, as a ligand, a cyclic polyfunctional amine compound having at least three nitrogen atoms in the ring forming molecular chain or an open chain polyfunctional amine compound having at least three nitrogen atoms in the main chain of the molecule.

Abstract: A degradable copolymer obtained by heat-dehydration reaction of aromatic polycarbonate and aliphatic polyester in the presence of a catalyst, has degradability which cannot be exhibited by common aromatic polycarbonate, transparency equal to polycarbonate, thermal resistance which cannot be exhibited by common aliphatic polyester, melt flowability superior to common aromatic polycarbonate and other excellent characteristics, and thus can be widely used for processed articles which require severe properties.

Abstract: A novel carbonate compound represented by the general formula ?I!:R.sup.1 CH.sub.2 O--CO--OCH.sub.2 R.sup.2 ?I!wherein R.sup.1 represents a hydrogen atom, an alkyl group or an alkyl group substituted with one or more halogen atoms, and R.sup.2 represent an alkyl group having no hydrogen atom at the .alpha.-position thereof or an alkyl group substituted with one or more halogen atoms having no hydrogen atom at the .alpha.-position thereof, with the proviso that R.sup.1 is not identical to R.sup.2, which has excellent properties as solvent, is disclosed. A non-aqueous electrolytic solution and a battery utilizing the novel carbonate compound are also disclosed.

Abstract: A multi-layer pipe has an innermost layer formed of a butene polymer composition. At least one other layer is formed of a polyolefin resin composition comprising (A) 95-5 parts by weight of a polyolefin resin, (B) 5-95 parts by weight of a filler, and (C) 0.1-10 parts by weight per 100 parts by weight of components (A) and (B) combined of a modified polyolefin resin. This multi-layer pipe undergoes minimal elongation by heat so that it is free from troubles by thermal deformation even when high temperature fluid is passed therethrough, has high rigidity, and is thus suitable as plumbing for cold and hot water.

Abstract: An impact resistant vehicle door latch device comprises a locking mechanism provided on a metal back plate fixed to a latch body. The locking mechanism has an inner locking lever which has a first base portion rotatably mounted to the back plate by a metal supporting shaft and a first tip portion extending toward an interior side of a door for being connected to an inside lock button, and an outer locking lever which has a second base portion rotatably mounted to the back plate by the supporting shaft and a second tip portion extending toward an exterior side of the door for being connected to a key cylinder. The supporting shaft has a large-diameter cylindrical part which supports the inner and outer locking levers, and a substantially annular flange which is integrally formed with the cylindrical part and has a plane surface perpendicular to an axis of the supporting shaft. The annular flange is located between the first base portion and second base portion.

Abstract: A process for preparing an olefin polymer comprising the steps of: preparing an olefin polymer ?I! by polymerizing or copolymerizing an olefin in the presence of an olefin poymerization catalyst comprising a specific solid titanium catalyst component ?A!, a specific organoaluminum compound catalyst component ?B! and a specific electron donor catalyst component ?C!; preparing an olefin polymer ?II! by polymerizing or copolymerizing an olefin in an polymerizer different from that for the polymerization of the above step in the presence of an olefin poymerization catalyst comprising a specific solid titanium catalyst component ?A!, a specific organoaluminum compound catalyst component ?B! and a specific electron donor catalyst component ?D!; and then allowing the resulting olefin polymer ?I! and the resulting olefin polymer ?II! to coexist in one polymerizer to further polymerize or copolymerize an olefin.

Abstract: Biaxially oriented films from high molecular weight polyethylene are characterized by a gas permeable structure formed from random-arranged microfibrils. The films have coefficients of static friction and kinetic friction of not more than 1.0. The biaxially oriented films are further characterized by service smoothness as well as tensile (tangent) modulus and tensile strength. The films may be used for lamination, filter, or for packaging for moisture absorbers. The biaxially oriented films may be obtained by extracting a hydrocarbon plasticizer from a sheet formed from the high molecular weight polyethylene and a hydrocarbon plasticizer, stretching the resulting sheet to obtain an oriented film having a specific surface area of at least 70 m.sup.2 /g and a fibril structure, and heating the oriented film under a standard length constraint to reduce the oriented film in specific area by at least 20 m.sup.2 /g.

Abstract: In accordance with the present invention, there are provided an olefin polymerization catalyst comprising an organoaluminum oxy-compound (A), a transition metal compound (B) and a hydrogenated organoaluminum compound (C); a solid olefin polymerization catalyst comprising the above-mentioned components (A), (B), (C) and a carrier (D); a prepolymerized catalyst formed by prepolymerization of olefin on a catalyst component comprising the above-mentioned components (A), (B), (C) and (D); an olefin polymerization catalyst comprising the above-mentioned solid olefin polymerization catalyst or the above-mentioned prepolymerized catalyst and an organoaluminum compound; and a method for the polymerization of olefin which comprises polymerizing olefin in the presence of the above-mentioned catalysts.

Abstract: 3-Formyltetrahydrofuran is prepared by reacting 2,5-dihydrofuran with hydrogen and carbon monoxide in the presence of a group VIII metal compound and tris(2-t-butyl-5-methylphenyl) phosphite.

Abstract: Disclosed is a process for the production of high-strength activated coke for desulfurization and denitrification. The process comprises forming a mixture of plural coals of different caking properties and a binder, said mixture containing said coal of higher caking property in an amount of 10-50 wt. %, subjecting the thus-formed mixture to oxidization treatment in an atmosphere having an oxygen concentration of 1-18 vol. % and a temperature of 50.degree.-250.degree. C., subjecting the thus-treated mixture to carbonization treatment under conditions of an oxygen concentration not higher than 8 vol. %, a heating efficiency of 10.degree.-50.degree. C./min and a final temperature 600.degree.-900.degree. C., and then subjecting again the thus-carbonized mixture to oxidation treatment at an oxygen concentration of 3-18 vol. % and a temperature of 200.degree.-600.degree. C.

Abstract: A novel phytase is disclosed. The phytase consists essentially of a single type of subunits, and can hydrolyze a phytate to myo-inositol. A gene encoding the phytase, which is originated from Schwanniomyces occidentalis is also disclosed.

Abstract: The present invention provides processes for preparing olefin polymers, by which olefin polymers composed of a propylene block copolymer component and an ethylene/.alpha.-olefin copolymer component are directly prepared by polymerization and olefin polymers excellent in impact resistance as well as in mechanical strength such as rigidity, moldability and heat resistance can be prepared. In the processes of the invention, a step (i) for preparing a crystalline polypropylene component and a step (ii) for preparing a low-crystalline or non-crystalline ethylene/.alpha.-olefin copolymer component are carried out in an arbitrary order using an olefin polymerization catalyst to form a propylene block copolymer component; then another catalyst component is added to the polymerization system; and a step (iii) for preparing a low-crystalline or non-crystalline ethylene/.alpha.-olefin copolymer component is carried out.

Abstract: This invention is a method of manufacturing liquid crystal device, wherein a high molecular liquid crystal layer of the device is formed by applying a high moleculer liquid crystal solution to form an active layer on the substrate and evaporating the solvent, and as high molecule liquid crystal, for example, high molecular liquid crystal having a structure formula as following is utilized.

Abstract: A molded article obtained by blow molding a propylene having a substantially syndiotactic structure or a resin composition comprising a polypropylene having a substantially syndiotactic structure and a copolymer of ethylene and propylene, and a multi-layer molded article obtained from this resin composition in which at least one surface of the molded article is a polypropylene layer having the substantially syndiotactic structure.

Abstract: The present invention provides an ethylene copolymer comprising constituent units (a) derived from ethylene and constituent units (b) derived from an .alpha.-olefin having 3 to 20 carbon atoms, the ethylene copolymer being characterized in that(A) the ethylene copolymer has a density (d) of 0.86 to 0.95 g/cm.sup.3 ;(B) the ethylene copolymer has a MFR of 0.001 to 50 g/10 min as measured at a temperature of 190.degree. C. and a load of 2.16 kg;(C) the melt tension (MT) and MFR of the ethylene copolymer satisfy the relationlog MT>-0.66log MFR+0.6; and(D) the temperature (T) at which the exothermic curve of the ethylene copolymer measured by a differential scanning calorimeter (DSC) shows the highest peak and the density (d) satisfy the relationT<400d-250.

Abstract: A novel unsaturated copolymer of ethylene comprises a random copolymer of (i) ethylene, (ii) an .alpha.-olefin of 3 to 20 carbon atoms and (iii) at least one straight chain or branched chain nonconjugated triene or tetraene having one vinyl group in the molecule, which contains 30-92% by mol of ethylene units (i), 6-70% by mol of .alpha.-olefin units (ii) and 0.1-30% by mol of triene or tetraene units (iii), and which has a molar ratio of ethylene units (i) to .alpha.-olefin units (ii) of 40/60 to 92/8 (ethylene units (i)/.alpha.-olefin units (ii)) and an intrinsic viscosity (.eta.), measured in Decalin at 135.degree. C., of 0.05 to 10 dl/g. This novel unsaturated copolymer of ethylene is excellent in weathering resistance, heat resistance and ozone resistance and has a high vulcanizing rate.

Abstract: A polypropylene-laminated steel sheet is provided which is less liable to cause whitening on receiving impact shock and is superior in resistance to corrosion. A process for producing the polypropylene-laminated steel sheet is also provided. The polypropylene-laminated steel sheet comprises, at least on one side of the steel sheet, a layer (A) of modified polypropylene grafted with an unsaturated carboxylic acid, and, if desired, a layer (B) of polypropylene formed additionally on the layer (A), the modified polypropylene of the layer (A) and the polypropylene of the layer (B) having crystallinity of not more than 55%.

Abstract: A novel polythiol having four or more functional groups, a process for producing the polythiol comprising reacting thiourea with a specific compound, a sulfur-containing urethane-based resin prepared from the polythiol and a lens made of the resin. The resin has a high refractive index, and low dispersion of refractive index, is lightweight, colorless and transparent, has no optical distortion, and has excellent characteristics in weatherability, dye-affinity, heat resistance, impact resistance and machinability.

Abstract: A process for producing a polyester of uniform quality, in which a slurry of powdery aromatic dicarboxylic acid in a liquid diol is prepared and the resulting slurry is processed through an esterification step and a polycondensation step in the presence of a catalyst, is provided by performing the reactions in the esterification and the polycondensation in a stabilized condition, which process comprisesrecycling a liquid containing the unreacted diol and the catalyst separated from the reaction mixture in the polycondensation step back to the esterification step as recycling liquor,detecting the concentrations of diol, diol condensation product, catalyst and water in the recycling liquor in the course of being recycled back to the esterification step by a near infrared spectrophotometer of a noise level of at the highest 50.times.10.sup.-6 Abs with a wave length repeatability of 0.

Abstract: A door locking device with an antitheft mechanism comprises a main locking lever connected to a key cylinder and, for changing over the locking device to a locking state or to an unlocking state, a sub locking lever connected to an inside lock button of the door, a connector provided between the locking levers, always linked with the main locking lever and changed over to a normal position where it is linked with the sub locking lever and to an antitheft position where it is not linked therewith, an output member which is turned by the motor and is linked with the main locking lever, and a guide wall provided in the vicinity of the connector. The guide wall is engageable with the connector as the connector is displaced by unlocking rotation of the main locking lever in order to displace the connector from the antitheft position to the normal position.