Abstract: Provided is a method for removing a coating film from a coated film including a coating film containing a water-soluble resin on at least one side of a base film. The method includes: supplying a cleaning liquid in a form of droplets to a surface of the coating film, and retaining the cleaning liquid in the form of droplets on the surface of the coating film; and subsequently removing the coating film containing the cleaning liquid from the coated film.

Abstract: A vibrator includes an electromechanical transducer which is a piezoelectric ceramic made of sodium-potassium niobate metal oxides and whose temperature characteristics of a relative permittivity is 500 [ppm/° C.] or less in absolute value in a temperature range from ?40° C. to 170° C., wherein excitation of the electromechanical transducer produces a vibration wave. Another vibrator includes an electromechanical transducer which is a piezoelectric ceramic made of sodium-potassium niobate metal oxides and whose temperature characteristics of a relative permittivity is 390 [ppm/° C.] or less in absolute value in a temperature range from 0° C. to 60° C., wherein excitation of the electromechanical transducer produces a vibration wave.

Abstract: A composite electronic component includes a multilayer body, coils, an antistatic element and outer electrodes. The multilayer body is configured by laminating insulator layers. The coils are provided on the upper surfaces of the insulator layers. The antistatic element is connected to the coils and includes ground electrodes. The outer electrodes are connected to the coils. The upper surfaces of the insulator layers on which the coils are provided do not intersect with the ground electrodes.

Abstract: To provide a process capable of efficiently producing a spherical aluminum nitride powder having a size most suited for use as a filler, and having a high sphericalness and a large particle strength. A spherical aluminum nitride powder is produced by using a spherical granulated product of an alumina powder or an alumina hydrate powder as a starting material, and feeding the spherical granulated product to the step of reductive nitrogenation so as to be reductively nitrogenated.

Abstract: To provide a method of producing a spherical aluminum nitride powder which has a large thermal conductivity and excellent filling property, and is useful as a filler for heat-radiating materials. [Means for Solution] The spherical aluminum nitride powder is produced by reductively nitriding a mixture of 100 parts by mass of an alumina or an alumina hydrate, 0.5 to 30 parts by mass of a rare earth metal compound and 38 to 46 parts by mass of a carbon powder at a temperature of 1620 to 1900° C. for not less than 2 hours.

Abstract: [Problems] To provide a spherical aluminum nitride powder that features high thermal conductivity and filling property, and that is useful as a filler for a heat radiating material, and a method of producing the same. [Means for Solution] A spherical aluminum nitride powder comprising aluminum nitride particles having an average particle diameter of 3 to 30 ?m, a sphericalness of not less than 0.75, and an oxygen content of not more than 1% by weight wherein, when the average particle diameter is d (?m), the specific surface area S (m2/g) satisfies the following formula (1), (1.84/d)?S?(1.84/d+0.5)??(1).

Abstract: [Problem] To provide a method of producing aluminum nitride that has high conducting property and can be excellently filled and is useful as a filler for heat-radiating materials, and an aluminum nitride powder obtained by the same method.

Abstract: A composite electronic component includes a multilayer body, coils, an antistatic element and outer electrodes. The multilayer body is configured by laminating insulator layers. The coils are provided on the upper surfaces of the insulator layers. The antistatic element is connected to the coils and includes ground electrodes. The outer electrodes are connected to the coils. The upper surfaces of the insulator layers on which the coils are provided do not intersect with the ground electrodes.

Abstract: [Problem] To provide a method of producing aluminum nitride that has high conducting property and can be excellently filled and is useful as a filler for heat-radiating materials, and an aluminum nitride powder obtained by the same method. [Means for Solution] An aluminum nitride powder is produced by reducing and nitriding: an alumina powder or a hydrated alumina powder having a primary grain size of 0.001 to 6 ?m; and a powder of a compound containing a rare earth metal element and having an average grain size in a range of 2 ?m to 80 ?m, the average grain size being not less than 6 times as great as the primary grain size of the alumina powder or the hydrated alumina powder; in the presence of a carbon powder at a temperature of 1620° C. to 1900° C. for not less than 2 hours.

Abstract: To provide a method of producing a spherical aluminum nitride powder which has a large thermal conductivity and excellent filling property, and is useful as a filler for heat-radiating materials. [Means for Solution] The spherical aluminum nitride powder is produced by reductively nitriding a mixture of 100 parts by mass of an alumina or an alumina hydrate, 0.5 to 30 parts by mass of a rare earth metal compound and 38 to 46 parts by mass of a carbon powder at a temperature of 1620 to 1900° C. for not less than 2 hours.

Abstract: [Problems] To provide a spherical aluminum nitride powder that features high thermal conductivity and filling property, and that is useful as a filler for a heat radiating material, and a method of producing the same. [Means for Solution] A spherical aluminum nitride powder comprising aluminum nitride particles having an average particle diameter of 3 to 30 ?m, a sphericalness of not less than 0.75, and an oxygen content of not more than 1% by weight wherein, when the average particle diameter is d (?m), the specific surface area S (m2/g) satisfies the following formula (1), (1.84/d)?S?(1.84/d+0.

Abstract: [Problems] To provide a process capable of efficiently producing a spherical aluminum nitride powder having a size most suited for use as a filler, and having a high sphericalness and a large particle strength. [Means for Solution] A spherical aluminum nitride powder is produced by using a spherical granulated product of an alumina powder or an alumina hydrate powder as a starting material, and feeding the spherical granulated product to the step of reductive nitrogenation so as to be reductively nitrogenated.

Abstract: Disclosed are silica-filled rubber granules comprised of a cocoagulation product of rubber and silica, which are extremely less powdery and excellent in handling and kneading, as well as an industrially advantageous process for producing same. The silica-filled rubber granules of the present invention are dried granules of a cocoagulation product of rubber and silica particles, which are characterized in that an average particle diameter (D50) in terms of the sieve analysis is 300˜3000 ?m and the weight ratio of the granules within the range of D50±(D50×0.5) is at least 50% by weight. The silica-filled rubber granules are produced by supplying a cake of a cocoagulation product of silica and rubber having a water content of 40˜80% by weight to a drier provided with an indirect-heating type container having stirring wing blades, and then drying the cake while stirring it with the stirring wing blade.

Abstract: A silica-containing conjugated diene rubber composition comprising a conjugated diene rubber-silica mixture (A) containing at least 30 wt % of toluene insoluble components obtainable by co-coagulating an aqueous dispersion or solution of conjugated diene rubber (a) having a glass transition temperature of ?120 to 0° C. with an aqueous dispersion of silica, blended with a conjugated diene rubber (b) having a glass transition temperature such that the difference in absolute value between the glass transition temperature of rubber (b) and that of rubber (a) is 3 to 100° C. According to the invention, it is possible to provide a rubber composition having highly balanced fuel efficiency, wet grip performance, mechanical strength, wear resistance and low temperature brittleness resistance; and suitably used for tire treads.

Abstract: The present invention is to provide a diene rubber composition and a cross-linked diene rubber thereof excellent in tensile strength, wear resistance and processability, keeping compatibility of both good fuel efficiency and high gripping property, and a production method thereof. What is characterized in the composition is that the composition is comprised of 100 parts by weight of a diene rubber having a molecular weight distribution expressed in terms of the ratio of the weight-average molecular weight to the number-average molecular weight of 1.1 to 30, 20 to 200 parts by weight of silica and a cationic polymer, and that a toluene-insoluble rubber content per gram of the silica within the range from 0.2 to 1 g, and diene cross-linked rubber thereof.

Abstract: Disclosed are silica-filled rubber granules comprised of a cocoagulation product of rubber and silica, which are extremely less powdery and excellent in handling and kneading, as well as an industrially advantageous process for producing same. The silica-filled rubber granules of the present invention are dried granules of a cocoagulation product of rubber and silica particles, which are characterized in that an average particle diameter (D50) in terms of the sieve analysis is 300˜3000 ?m and the weight ratio of the granules within the range of D50±(D50×0.5) is at least 50% by weight. The silica-filled rubber granules are produced by supplying a cake of a cocoagulation product of silica and rubber having a water content of 40˜80% by weight to a drier provided with an indirect-heating type container having stirring wing blades, and then drying the cake while stirring it with the stirring wing blade.

Abstract: A silica-containing rubber composition produced by filtering slurry of silica-containing rubber crumbs obtained by co-coagulating a mixture of rubber latex and silica to give a moisture content of 80 wt % or less, dehydrating by a dehydrator having a compression function, then, drying. According to the present invention, a silica-containing rubber composition with improved silica dispersibility can be provided.

Abstract: To resolve a problem of decreasing a heat exchange rate of a refrigerating cycle owing to a large amount of a refrigerator oil delivered from a discharge pipe to the refrigerating cycle, there is provided a sealed compressor driven by a motor having a compressor unit and a motor unit in which a ring is provided at an outer periphery of a coil end of a stator on a side of the compressor unit to reduce the amount of delivering the refrigerator oil to the refrigerating cycle and a shape of a balance weight of a rotor on the side of the compressor unit is formed in a cylindrical shape a portion of a side face of which is opened and an end face of which is flat to thereby reduce stirring of fluid.

Abstract: To provide an optical disk device wherein information reading/writing of a desired content of a recording medium can be started immediately when its disk tray is re-loaded without removal of the recording medium, the optical disk device comprises a disk tray (2) whereon an optical disk to be loaded is set, a disk detection switch (3) for discriminating whether an optical disk is set or not on the disk tray, a main controller (4) having a function for controlling the optical disk device to read medium information only when a removal of an optical disk loaded on the optical disk device is checked to have been performed just before loading of the optical disk, referring to a logical sequence of a detection signal output from the disk detection switch (3).

Abstract: A portable electronic calculator which has incorporated therein a writing instrument. A miniature electronic calculator is built in a rectangular, elongated body. A cover made of metal covers a control panel for the electronic calculator and a display part, and the cover is mounted on the body to be removable therefrom by sliding the cover in the lengthwise direction of the body. The side marginal portions of the cover are bent inwardly for engagement with both side surfaces of the body to reinforce the body when the cover has been mounted thereon.