Abstract: This invention provides a pitch fiber bundle for carbon fibers of small size, a carbon fiber bundle, and a method for the production thereof, i.e. a method for the production of carbon fibers of a small size, a pitch fiber bundle, and a carbon fiber bundle at a lower cost with higher productivity than usual. The method for the production of pitch type carbon fibers according to this invention comprises dividing a plurality of pitch fibers into not less than two bundles, intertwining the bundles by exposure to currents of air thereby forming a first fiber bundle, binding a plurality of such first fiber bundles, and again intertwining the bound pitch fiber bundles by exposure to currents of air thereby forming a second fiber bundle.

Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compound, which has both a structure exhibiting a cathodic electorchromic characteristic and a structure exhibiting an anodic electrochromic characteristic.

Abstract: Fuel additives comprise a compound having a group represented by the formula >C═=N—  (1). Also disclosed are fuel compositions containing such additives. The additives have a superior detergent effect to conventional gasoline detergents and an excellent detergency of the injection nozzles of a diesel engine and is free from being sludge.

Abstract: An ion conductive material comprising a mixture of a solvent, a supporting electrolyte, and an ultraviolet absorber and alternatively a polymerizable monomer and having an ion conductivity at 25° C. of 1×10−7 or greater; the ultraviolet absorber being contained in the ion conductive material in such an amount that the transmissivity of electromagnetic rays having a wavelength from 300 to 360 nm and transmitting through an layer of the ion conductive material of 0.2 mm in thickness can be maintained 0.1% or below. The ion conductive material is suitable for use in various electrochromic devices.

Abstract: A method of preparing an alkyl-substituted aromatic hydrocarbon, which comprises alkylating an aromatic hydrocarbon with an olefin in the presence of a catalyst comprising an iridium compound having at least one iridium atom and at least one &bgr;-diketonato ligand to produce the alkyl-substituted aromatic hydrocarbon.

Abstract: A method for converting benzene and aromatic hydrocarbon compounds having 9 or more carbon atoms contained in a material oil having a boiling point of 30˜210° C. into toluene and aromatic hydrocarbon compounds having 8 carbon atoms in the presence of hydrogen and the said catalyst. The catalyst can be obtained by carrying at least one metal or metal compound selected from Group VIII and Group VIA of the Periodic Table on a carrier containing zeolites in which maximum diameter among diameters of its micropores is 0.6-1.0 nm and a ratio of SiO2/Al2O3 is 50 or more.

Abstract: A process for preparing polyolefins by polymerizing or coploymerizing an olefin or olefins in the presence of a catalyst comprising a solid catalyst component and an organometallic compound is provided.

Abstract: A method of preparing an alkenyl-substituted aromatic hydrocarbon, which comprises alkenylating an aromatic hydrocarbon with an olefin using &bgr;-diketone together with a rhodium complex catalyst in the presence of oxygen.

Abstract: Lubricating oil compositions comprise a lubricating base oil and (A) at least one compound selected from the group consisting of compounds represented by formula (1) below and compounds represented by formula (2) below: 1

Abstract: The electrochromic devices have an ion conductive layer formed by curing a composition comprising a bipyridinium compound represented by the formula 1

Abstract: A process is disclosed for discharging and transferring upwardly fluidized particles from a dense fluidizing layer forming section to a high-velocity transferring section having a diameter which is smaller than the dense fluidized layer forming section, wherein at least one intermediate cylindrical section is provided between the dense fluidized layer forming section and the high-velocity transferring section. The process can decrease the degree of changes in the amount of particles to be discharged from the dense fluidizing forming section and transferred by the riser, thereby proving a stable and uniform transfer of the fluidized particles.

Abstract: Refrigerating machine oils comprising an ester oil for use with a refrigerant containing carbon dioxide are described. The refrigerating machine oils have excellent lubricity, miscibility with a refrigerant, stability and electric insulation.

Abstract: Lubricant compositions comprise a lubricant base oil, and (A) a mono substituted amide type bissuccinimide in an amount from 0.5 to 20 percent by mass, (B) zinc dithiophosphate in an amount from 0.05 to 0.3 percent by mass of phosphorus, and (C) a metal-based detergent in an amount form 0.5 to 4.0 percent by mass of sulfated ash, based on the total mass of the composition. Lubricant compositions preferably further comprises (D) a dispersant type viscosity index improver in an amount from 0.1 to 20 percent by mass, based on the total mass of the composition.

Abstract: An electrochromic mirror comprising two conductive substrates, at least one of which is transparent, and both of an ion conductor layer and an electrochromic color-developing layer sandwiched between the substrates, wherein the color-developing layer contains a high-molecular compound having a biologen structure.

Abstract: An optical laminate comprising, laminated in the order mentioned, a support substrate, adhesive layer, cholesteric liquid crystal layer and protection layer, characterized in that the cholesteric liquid crystal layer has in at least part thereof an area indicating a diffraction power. The optical laminate is used for a polarization diffraction element, liquid crystal display device compensation element, decorative member, and forgery prevention element.

Abstract: A grease composition is disclosed which contains a lubricating base oil, and: (A) 2 to 30 wt % of a urea thickener, (B) 0.1 to 20 wt % of a sulfur-containing extreme pressure agent selected from the group consisting of dihydrocarbyl polysulfide, sulfurized oils and fats and mixtures thereof, and (C) 0.05 to 10 wt % of a sulfonate selected from the group consisting of an over-based zinc sulfonate, an over-based magnesium sulfonate and mixtures thereof having total base number of 100 to 500 mgKOH/g, each based on a total amount of said composition.

Abstract: A complex diffraction device, which is excellent in designability, easy in setting the diffraction angle, adaptable to size increase, and easy to handle by adding a diffraction function resulting from an uneven pattern to the diffraction device comprising a liquid crystalline layer where the helical orientation of the smectic liquid crystal phase having a helical structure is maintained.

Abstract: Disclosed is a method for producing an electrochromic device in which to provide an opening in the surface of each of the two electrically conductive substrates of the cell, not in the end surface of the opposed substrates, to insert into one of the openings an elastically deformable sealing member; to fill the inside of the cell by vacuum-injecting an electrolyte or the precursor thereof through the other opening which remains open; to push the sealing member up to the opening for injecting the electrolyte or the precursor so as to dose this opening as well; and to bond the sealing member extending through the two openings to each of the substrates with an adhesive.

Abstract: A refrigerating machine oil for a carbon dioxide refrigerant according to the present invention contains polyalkylene glycol represented by the following general formula (1):

Abstract: A method for producing a cell for an electrochromic mirror by laminating two electrically conductive substrates which comprises the step of placing at least two plates each having at least one linear portion and provided with in a predetermined position with a punched-out portion having a shape corresponding to that of said substrate, such that each of said linear portions is located on the same line or on each of two lines offset from each other, in a juxtaposed relationship at a predetermined interval; the step of positioning said two substrates by inserting them into each of said punched-out portions; the step of shifting one of said plates holding said substrates therein over the other plate such that the substrates are located in a superposed relationship to each other; and the step of laminating said substrates.