摘要:
The room-temperature curable silicone rubber composition is formulated, in addition to the conventional ingredients of a hydroxy-terminated diorganopolysiloxane and an organosilicon compound having at least two hydrolyzable groups in a molecule, a substantial amount of an alkali metal salt of a weak acid having an acid dissociation constant as expressed by pK.sub.a in the range from 2.0 to 12.0 at 25.degree. C. such as acrylic, methacrylic, benzoic and acetic acids. By virtue of this unique ingredient compounded therein, the composition of the invention can give a vulcanized rubber having outstandingly high resistance against oils used in automobiles even at elevated temperatures.
摘要:
A method of manufacturing a semiconductor device comprises forming a mask of a predetermined pattern on a first conductive layer (3) deposited over a semiconductor substrate (1) and etching physically first conductive layer so that the side surfaces thereof are substantially perpendicular to a surface of the semiconductor substrate. After removing the mask on the pattern, a first insulating layer (7) is deposited over the whole upper surface of the semiconductor substrate including the first conductive layer. A physical etching is made over the first insulating layer until the surface of the semiconductor substrate is exposed, so that a portion (7a) of the first insulating layer (7) is left in a stepped portion of the side surfaces of the first conductive layer. Then, a second insulating layer (5) is formed over a whole upper surface of the semiconductor substrate including the portion (7a) of the insulating layer and the first conductive layer. Subsequently, a second conductive layer (6) is formed over the whole upper surface thereof.
摘要:
A scroll type compressor has a rotary shaft, a fixed scroll member, a movable scroll member and a rib. The fixed scroll member has a fixed end plate and a fixed scroll wall. The fixed end plate has first and second sides. The fixed scroll wall is formed on the first side. The movable scroll member has a movable end plate and a movable scroll wall. The movable scroll wall is formed on the movable end plate. The movable scroll member is adapted to make an orbital motion in accordance with the rotation of the rotary shaft whereby a compression chamber to decrease the volume of the compression chamber with the orbital motion of the movable scroll member is formed between the fixed scroll member and the movable scroll member. The rib is provided on the second side so as to extend behind the inner end of the fixed scroll wall.
摘要:
A valve timing control apparatus including a housing, a vane rotor rotatable relative to the housing toward a phase-advance side and a phase-retard side, a first lock member and a second lock member disposed on the vane rotor, a first lock concave portion disposed on the housing so as to be engaged with a tip end portion of the first lock member, a second lock concave portion disposed on the housing so as to be engaged with a tip end portion of the second lock member, and a communication passage formed in the vane rotor and serving to always establish fluid communication between the first and second lock concave portions.
摘要:
A compressor includes a rotary shaft, a cam, a cylinder block, pistons, a thrust bearing, a rotary valve, and an oil passage. The rotary shaft has an in-shaft passage formed therein. The in-shaft passage has an outlet open to the outer peripheral surface of the rotary shaft. The cam rotates integrally with the rotary shaft. The pistons are coupled to the rotary shaft through the cam. The thrust bearing is provided between the cam and the cylinder block. The thrust bearing includes a first race in contact with the cam, a second race in contact with the cylinder block, and rolling elements retained between the first and second races to form a gap therebetween. The oil passage is formed in the outer peripheral surface of the rotary shaft so as to extend from the gap to the outlet of the in-shaft passage.
摘要:
A coil component having an easily discernible orientation, and a method of producing such a coil component that facilitates the injection of resin. A coil component includes a core with a winding portion, first and second flanges disposed on either end of the winding portion, and a winding accommodating region defined by the winding portion and the first and second flanges, terminal electrodes disposed on the second flange and a winding wound about the winding portion and connected to the terminal electrodes. An insulating resin is formed over the winding at the winding accommodating region. A marker made from a material the same as the insulating resin is provided at outer peripheral surface of the flanges.
摘要:
This invention provides a spectacle lens excellent in hue, and provides a spectacle lens formed from a resin composition containing (1) 100 parts by weight of a polycarbonate resin, (2) 0.05 to 0.5 part by weight of a fatty acid ester mold release agent that is at least one member selected from the group consisting of (i) an ester of a monohydric alcohol having 1 to 20 carbon atoms and a saturated or unsaturated fatty acid having 10 to 30 carbon atoms and (ii) a full ester of glycerin and a saturated or unsaturated fatty acid having 10 to 30 carbon atoms, and that has a metal potassium content of 15 ppm or less and a metal sodium content of 30 ppm or less, (3) 0.1 to 0.25 part by weight of a benzotriazole ultraviolet absorbent, (4) 0.1 to 0.3 part by weight of a hindered phenol antioxidant, and (5) 0.005 to 0.1 part by weight of a phosphorus heat stabilizer, and a process for the production thereof.
摘要:
A perfluoropolyether rubber composition is useful for forming a polymer electrolyte membrane, comprising (A) an alkenyl-containing perfluoropolyether, (B) a silicon-oxygen crosslinked structure having ionic conduction, and (C) a peroxide crosslinker. The silicon-oxygen crosslinked structure is obtained by simultaneously effecting oxidation and hydrolysis on an organoxysilane having an epoxy group and an organoxysilane having a mercapto group for thereby converting the mercapto group into a sulfonic group, and neutralizing the resulting sulfonic group-containing siloxane with a nitrogen-containing compound.
摘要:
A coating composition comprising (A) a hydroxyl end-capped diorganopolysiloxane, (B) an organosilicon compound having at least three silicon-bonded hydrolyzable groups in a molecule, and (C) a perfluoropolyether compound having a perfluoropolyether group at one end and a hydrolyzable group at the other end is effective for preventing fouling of a substrate in a marine environment.
摘要:
A compressor includes a rotary shaft, a cam, a cylinder block, pistons, a thrust bearing, a rotary valve, and an oil passage. The rotary shaft has an in-shaft passage formed therein. The in-shaft passage has an outlet open to the outer peripheral surface of the rotary shaft. The cam rotates integrally with the rotary shaft. The pistons are coupled to the rotary shaft through the cam. The thrust bearing is provided between the cam and the cylinder block. The thrust bearing includes a first race in contact with the cam, a second race in contact with the cylinder block, and rolling elements retained between the first and second races to form a gap therebetween. The oil passage is formed in the outer peripheral surface of the rotary shaft so as to extend from the gap to the outlet of the in-shaft passage.