Abstract: A process is provided for the preparation of an .alpha.-tocopherol derivatives which are useful as antisterile vitamins, hypolipidemic blood flow increasing agents, anti-cytosenility agents, antioxidants and the like. Catalysts are also provided.The .alpha.-tocopherol derivatives are represented by the following formula (VII): ##STR1## wherein n stands for 0 or an integer of from 1 to 5. The derivative can be industrially prepared by employing as catalyst a metal ion-exchanged montmorillonite, metal ion-exchanged bentonite or metal ion-exchanged saponite which is substituted with one metal ion selected from the group consisting of scandium, yttrium, lanthanide element, aluminium, iron, tin, copper, titanium, zinc, nickel, gallium or zirconium.

Abstract: A .beta.-glucan detection reagent includes a horseshoe crab hemocyte lysate containing an endotoxin neutralizing peptide and a chromogenic substrate. The reagent provides a very sensitive method for detecting .beta.-glucans and is therefore useful as a diagnostic agent such as for detection of nosomycosis.

Abstract: A process is provided for the preparation of an .alpha.-tocopherol derivatives which are useful as antisterile vitamins, hypolipidemics, blood flow increasing agents, anti-cytosenility agents, antioxidants and the like. Catalysts are also provided.The .alpha.-tocopherol derivatives are represented by the following formula (VII): ##STR1## wherein n stands for 0 or an integer of from 1 to 5. The derivatives can be industrially prepared by employing as catalyst a metal ion-exchanged montmorillonite, metal ion-exchanged bentonite or metal ion-exchanged saponite which is substituted with one metal ion selected from the group consisting of scandium, yttrium, lanthanide element, aluminium, iron, tin, copper, titanium, zinc, nickel, gallium or zirconium.

Abstract: A process is provided for the preparation of an .alpha.-tocopherol derivative represented by the following formula (VII): ##STR1## wherein n stands for 0 or an integer of from 1 to 5. According to the process, trimethylhydroquinone and a particular allyl alcohol derivative or a specific alkenyl alcohol are subjected to a condensation reaction in the presence of a fluorosulfonate [M(RSO.sub.3).sub.3 ], a nitrate [M(NO.sub.3).sub.3 ] or a sulfate [M.sub.2 (SO.sub.4).sub.3 ], wherein M represents a scandium, yttrium or lanthanide atom, and R represents a fluorine atom, a fluorinated lower alkyl group, or an aryl group which may be substituted by one or more fluorine atoms. The lanthanide atom means a lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium or lutetium atom.

Abstract: An aluminate complex represented by formula (I): ##STR1## with the groups in the aluminate complex as defined in the specification, and which is capable of radical generation upon photoexcitation; a photopolymerizable composition comprising an ethylenically unsaturated polymerizable compound and the aluminate complex; and an image-forming material comprising a support, an organoaluminum compound anion represented by formula (I'): ##STR2## with the groups in the organoaluminum compound anion as defined in the specification, and a photobleachable dye; are disclosed.

Abstract: A wrap around caser including a holding and moving robot is provided. The holding and moving robot holds a predetermined number of bottles collected in a collection station and moves the bottles onto a center section of a blank sheet located at a receiving station and in succession pushes the bottles and the blank sheet downward along a predetermined path defined in a folding station so as to have the blank sheet folded into the shape of a box-shaped case around the bottles. The bottles are not released until they are placed in the box-shaped case so that the casing operation is stable and may be carried out at an increased.

Abstract: A starting method for starting a multiphase DC motor having a stator provided with stator coils, a rotor provided with a rotor magnet and detector for detecting revolutions of the rotor, has stepping process and acceleration process. In the stepping process, a plurality of stepping steps is performed. The accelerating process is performed after the stepping process is completed. The plurality of the stepping steps include counter-exciting operation. Each of the plurality of stepping steps is provided by a rotation detection step. The stepping process is completed and the accelerating process is performed when a rotation detector detects that the revolutions of the rotor exceeds a predetermined value.

Abstract: A method for manufacture of an ink jet head comprises the process of forming a head main body by providing a positive resist layer to constitute ink passages for a substrate having ink ejection pressure generating means and then a ceiling member therewith; forming a carbon-contained film for the surface where the ink discharging ports of the head main body are formed; conducting a fluoric plasma treatment given to the carbon-contained film by utilizing a hydrofluoride compound; and removing the positive resist layer. With this method, an F-C coupled water repellent film is formed on the discharging port formation surface of an ink jet recording head evenly with a desirable bonding capability to enhance the reliability of water repellency.

Abstract: A method for manufacturing an ink jet head having a discharge opening for discharging ink and an ink passage communicated with the discharge opening, includes the step of forming the discharge opening by performing a cutting operation along a portion where the discharge opening is to be formed, while maintaining the ink passage in a pressurized condition by filling the ink passage with fluid. Another method includes the step of cleaning an ink passage by introducing liquid and gas into the ink passage alternately; and an ink jet apparatus comprising such an ink jet head, and a member for holding the ink jet head.

Abstract: A heat-sensitive recording medium comprising, on a support, a heat-sensitive color-developing layer containing a colorless or light-colored leuco dye (or an electron-donating dye precursor) and a color-developing agent (or an electron-accepting substance) reacting with the leuco dye to develop color as main constituents, said leuco dye being a compound represented by the formula (I): ##STR1## wherein X represents CH.sub.3 --(CH.sub.2).sub.3 --CH.sub.2 or CH.sub.3 --CH.sub.2 --CH.sub.2 and Y represents CH.sub.3 --(CH.sub.2).sub.3 --Ch.sub.2 or CH.sub.3, and said heat-sensitive color-developing layer containing at least one of the compounds represented by the general formula (II) and (III): ##STR2## where R.sub.1, R.sub.1 ' are respectively any one of H, Cl, and CH.sub.3, and may be the same with or different from each other: ##STR3## where R.sub.2, R.sub.2 ' are respectively any one of H and CH.sub.3, and may be the same with or different from each other.

Abstract: An electron gun arrangement is for use in the electron beam evaporation process, including the permanent magnet circuit for deflecting the electron beam from its supply source toward its crucible, wherein it further includes electromagnetic coil winding means for sweeping the electron beam to one point to the particular point on the substance to be evaporated. The electromagnetic coil winding means is disposed to surround the permanent magnet circuit.

Abstract: Optically active 3,3'-disilylbinaphthol derivatives are disclosed, which are represented by a general formula (I) ##STR1## (wherein, R.sup.1, R.sup.2 and R.sup.3 indicate mutually same or different lower alkyl groups and/or aromatic groups), and the steric configuration of which is R form or S form.