摘要:
Dimethyl formamide is produced in high yield with good selectivity by reaction of monomethylamine and trimethylamine, or together with dimethylamine, with carbon monoxide in the presence of metallic iron or an iron compound such as oxide, hydroxide, sulfide, inorganic acid salt, organic acid salt or carbonyl compound of iron.
摘要:
Dimethylformamide mg.multidot.produced by reaction of monomethylamine and trimethylamine at a molar ratio of trimethylamine to monomethylamine of 0.1-10, with carbon monoxide in the presence of 1-500 mg. atom of at least one of iodine, bromine, iodides and bromides as a catalyst in term of halogen per one mole of raw material methylamines at a temperature of 100.degree.-350.degree. C. under a pressure of at least 50 kg/cm.sup.2 gage. Dimethylformamide is produced in a very high yield with a high selectivity from monomethylamine and trimethylamine having less demand among three species of methylamines formed from methanol and ammonia.
摘要:
A power conversion apparatus is for converting polyphase ac power directly to ac power. A conversion circuit includes a plurality of first switching devices 311, 313, 315 and a plurality of second switching devices 312, 314, 316 connected, respectively, with the phases R, S, T of the polyphase ac power, and configured to enable electrical switching operation in both directions. There are provided a plurality of condensers 821˜826 connected with the conversion circuit. At least one of the condensers is provided, for each of the first switching devices and the second switching devices, between two of the phases of the polyphase ac power. It is possible to reduce a wiring distance between the condenser and the switching devices.
摘要:
There is disclosed a power conversion apparatus 3 for converting polyphase ac power directly to ac power. A conversion circuit includes a plurality of first switching devices 311, 313, 315 and a plurality of second switching devices 312, 314, 316 connected, respectively, with the phases R, S, T of the polyphase ac power, and configured to enable electrical switching operation in both directions. Output lines 331, 332 formed by a pair of busbars are connected with the conversion circuit. The first switching devices and the second switching devices are so arranged that output terminals are arranged in a row. The output lines 331, 332 are connected with the output terminals and drawn out rectilinearly in one direction.
摘要:
A power conversion apparatus is for converting polyphase ac power directly to ac power. A conversion circuit includes a plurality of first switching devices 311, 313, 315 and a plurality of second switching devices 312, 314, 316 connected, respectively, with the phases R, S, T of the polyphase ac power, and configured to enable electrical switching operation in both directions. There are provided a plurality of condensers 821˜826 connected with the conversion circuit. At least one of the condensers is provided, for each of the first switching devices and the second switching devices, between two of the phases of the polyphase ac power. It is possible to reduce a wiring distance between the condenser and the switching devices.
摘要:
A battery system including battery blocks (3) having a plurality of battery cells (1) stacked with cooling gaps (4) established between the battery cells to pass cooling gas; ventilating ducts (5), which are supply ducts (6) and exhaust ducts (7), disposed on both sides of the battery blocks to forcibly ventilate the cooling gaps; and ventilating apparatus (9) to force cooling gas to flow through the ventilating ducts. Cooling gas forcibly introduced by the ventilating apparatus flows from the supply ducts through the cooling gaps and into the exhaust ducts to cool the battery cells. In addition, the battery system has temperature equalizing walls (8) disposed in the supply ducts. The temperature equalizing walls are long and narrow with length in the direction of flow greater than the width, and each temperature equalizing wall gradually narrows towards the upstream end.
摘要:
Connection with an ACF is realized relative to a wiring board having an electronic component mounted on the rear surface thereof with high connection reliability and uniform thermal compression bonding. A thermal compression bonding head 12 is used to apply pressure to flexible printed circuit boards 4 and 5 relative to a motherboard substrate 1 having an electronic component 6 mounted thereon and heat an anisotropic conductive film, thereby connecting the motherboard substrate 1 with the ACF to the flexible printed circuit boards 4 and 5 that are connecting members. At this time, in a state in which a receiving plate 13 made of an elastic material, such as silicone rubber, and provided at a mounting position of the electronic component 6 of the motherboard substrate 1 with a concave portion 13a corresponding in shape to the electronic component 6 supports thereon the rear surface of the motherboard substrate 1, the thermal compression bonding is performed.
摘要:
A latent curing agent (30) of the present invention includes a core member (31) and a capsule (37) covering up the surface of the core member (31). The core member (31) includes a secondary particle (32) and a curing agent (35) retained in a gap (38) of the secondary particle (32). The curing agent (35) is liquid at ambient temperature. When the capsule (37) is destructed so that the curing agent (35) is emitted into an adhesive, the curing agent (35) is mixed with other ingredients in the adhesive. A metal alcoholate which is liquid at ambient temperature or a metal chelate which is liquid at ambient temperature is used as the curing agent (35), while a silane coupling agent is added to the adhesive. A reaction takes place between the curing agent (35) and the silane coupling agent to yield cations. By these cations, the epoxy resin undergoes cation in polymerization. Since the cation generating reaction proceeds at a temperature lower than in the case of the conventional adhesive, curing proceeds more promptly and at a lower temperature than in the case of the conventional adhesive.
摘要:
Screen data is generated by a screen generating processor (74) of a control host computer (7) and transmitted to a programmable display apparatus (5). In accordance with the screen data, the programmable display apparatus (5) inquires a PLC (3) or the like about a state of a device (21), so as to update the display or transmit a control instruction depending on an input result. On the other hand, a control host computer (7) has a public server section (77) to transmit to a client apparatus (9) via the Internet an applet, which is generated by a compiler (76) compiling the screen data. The client apparatus (9) executes the applet to transmit to the public server section (77) an or the control instruction inquiry similar to those the programmable display apparatus (5) makes. In this way, the display is updated in accordance with a response. This realizes a control system, which allows a display content of the programmable display apparatus (5) to be remotely checked from a remote area remote from the programmable display apparatus (5), without newly generating a display screen.
摘要:
Screen data is generated by a screen generating processor (74) of a control host computer (7) and transmitted to a programmable display apparatus (5). In accordance with the screen data, the programmable display apparatus (5) inquires a PLC (3) or the like about a state of a device (21), so as to update the display or transmit a control instruction depending on an input result. On the other hand, a control host computer (7) has a public server section (77) to transmit to a client apparatus (9) via the Internet an applet, which is generated by a compiler (76) compiling the screen data. The client apparatus (9) executes the applet to transmit to the public server section (77) an or the control instruction inquiry similar to those the programmable display apparatus (5) makes. In this way, the display is updated in accordance with a response. This realizes a control system, which allows a display content of the programmable display apparatus (5) to be remotely checked from a remote area remote from the programmable display apparatus (5), without newly generating a display screen.