摘要:
A process for producing a vulcanized rubber composition that includes S-(3-aminopropyl)thiosulfuric acid, a rubber component, a filler, a sulfur component, and a vulcanization accelerator, the process comprising the following Steps (A), (B) and (C); (A): a step of kneading S-(3-aminopropyl)thiosulfuric acid having a median diameter (50% D) of 10 μm to 100 μm, a rubber component and a filler, (B): a step of kneading the kneaded mixture obtained in Step (A), a sulfur component and a vulcanization accelerator, and (C): a step of subjecting the kneaded mixture obtained in Step (B) to thermal treatment.
摘要:
A method for using S-(3-aminopropyl)thiosulfuric acid and/or a metal salt thereof added to a rubber component as a raw material of a vulcanized rubber composition, comprisinga pre-kneading step A of kneading a rubber component, a filler, S-(3-aminopropyl)thiosulfuric acid and/or a metal salt thereof,a post-kneading step B of kneading the kneaded substance A obtained in the pre-kneading step A, a sulfur component, and a vulcanization accelerator having a weight over the weight of the above-described sulfur component, anda thermal treatment step C of thermally-treating the kneaded substance B obtained in the post-kneading step B to obtain a vulcanized rubber composition, wherein durability is imparted to the vulcanized rubber composition;
摘要:
A process for manufacturing a vulcanized rubber comprising the first step of kneading S-(3-aminopropyl)thiosulfuric acid and/or a metal salt thereof, a rubber component, a filler and a sulfur component to obtain a kneaded product, and the second step of subjecting the kneaded product obtained in the first step to a heat treatment.
摘要:
A condensation product of resorcin and acetone, wherein the ratio of the area of the first elution peak to the total area of all peaks is 20 to 50% as determined by gel permeation chromatography of which detector is a differential refractive index detector.
摘要:
A semiconductor device manufacturing method includes forming circuit devices and a plurality of electrode pads within a semiconductor chip formation region. The method also includes forming, on the main surface of the semiconductor wafer, an insulating film which exposes a portion of each of the electrode pads. The method also includes forming a conducting film covering the electrode pads, on the insulating film, and forming a wiring layer on the conducting film. The method also includes forming a negative resist layer in the semiconductor chip formation region and a peripheral region. The method also includes covering protruding electrode formation regions in the semiconductor chip formation region and covering electrode portion formation regions in the peripheral region, and performing optical exposure of the negative resist layer. The method also includes forming aperture portions in the protruding electrode formation regions and a plurality of electrode portions. The aperture portions expose a portion of the wiring layer. The electrode portions are formed by exposing the conducting film. The method also includes performing plating using the resist layer as a mask to form protruding electrodes.
摘要:
An optical pickup device comprises a light emitting element for emitting a laser beam, and a housing in which the light emitting element is mounted, wherein the light emitting element is contained in a holder for protecting the light emitting device, the holder including a projecting portion for dissipating heat generated by the light emitting element, and the projecting portion is located within the housing. Thus, an optical pickup device having a light emitting element held in a holder which is superior in heat dissipation and is resistant to damage can be provided.
摘要:
An electrotherapeutic device for passing a DC electric current through a living organism by applying a voltage to the living organism includes a battery with an internal resistance which is high enough so that changes in the resistance value of the living organism can be disregarded. Excessive flow of current is avoided even when the resistance of the living organism fluctuates. The device is safe, easy to handle, and inexpensive. It is particularly suited for use with iontophoresis; a technology by which drugs are administered using electricity.
摘要:
A television telephone system utilizes a tone signal of a predetermined duration. The tone signal has a plurality of frequencies and is positioned at the starting portion of a transmission signal. The tone signal reduces the possibility of mis-detection of signals during reception and allows video signals to be transmitted more satisfactorily.