Abstract: Provided is a nickel powder manufacturing method capable of efficiently manufacturing a high-quality nickel powder using as little ammonium gas or ammonium water as possible. The nickel powder manufacturing method according to the present invention is characterized by comprising: a first step for generating a post-neutralization slurry including nickel hydroxide by mixing a nickel sulfate aqueous solution and a neutralizing agent; a second step for causing a complex-forming reaction by mixing an ammonium sulfate aqueous solution with the post-neutralization slurry and obtaining a post-complexation slurry including a nickel ammine complex aqueous solution; and a reducing step for obtaining a nickel powder and a post-reduction solution by contacting hydrogen gas with the nickel ammine complex aqueous solution. Further, it is preferable that a post-complexation solution obtained in the reduction step be repeatedly used as the ammonium sulfate aqueous solution to be added to the post-neutralization slurry.

Abstract: A nickel sulfate amine complex liquid and nickel powder having a particle diameter of 0.1 ?m to 300 ?m are supplied to a reaction container, hydrogen gas is continuously supplied while the inside of the reaction container is maintained at 150° C. to 250° C., and the pressure is set to 2.5 MPa to 3.5 MPa, whereby nickel ions in the nickel sulfate amine complex liquid are reduced to nickel and deposited on the surfaces of the nickel powder supplied to the reaction container, a reacted slurry including the nickel sulfate amine complex liquid and the nickel powder is then transferred to a pressurized storage container at the same or slightly lower pressure than the internal pressure of the reaction container, and the pressure of the pressurized storage container to which the reacted slurry is transferred is then reduced, after which the reacted slurry is extracted from the pressurized storage container.

Abstract: A nickel sulfate amine complex liquid and nickel powder having a particle diameter of 0.1 ?m to 300 ?m are supplied to a reaction container, hydrogen gas is continuously supplied while the inside of the reaction container is maintained at 150° C. to 250° C., and the pressure is set to 2.5 MPa to 3.5 MPa, whereby nickel ions in the nickel sulfate amine complex liquid are reduced to nickel and deposited on the surfaces of the nickel powder supplied to the reaction container, a reacted slurry including the nickel sulfate amine complex liquid and the nickel powder is then transferred to a pressurized storage container at the same or slightly lower pressure than the internal pressure of the reaction container, and the pressure of the pressurized storage container to which the reacted slurry is transferred is then reduced, after which the reacted slurry is extracted from the pressurized storage container.

Abstract: Provided is a method for producing seed crystals of cobalt powder, sequentially including: a complexing step of adding ammonia, an ammonia compound solution, or both of ammonia and an ammonia compound solution to a cobalt sulfate solution to obtain a solution containing a cobalt ammine sulfate complex; a mixing step of adding a solid to the solution containing the cobalt ammine sulfate complex to form a mixture slurry; a reduction and precipitation step of charging a reaction vessel with the mixture slurry, blowing hydrogen gas into the reaction vessel and reducing cobalt contained in the mixture slurry to obtain a cobalt powder slurry containing cobalt precipitate with a cobalt component precipitated on the surface of the solid as cobalt powder; and a solid-liquid separation step of performing solid-liquid separation on the cobalt powder slurry to obtain cobalt precipitate and a solution after reduction.

Abstract: A method for manufacturing nickel powder whereby a reduction in production efficiency due to abrasion of a flash vessel connected to a pressurized container can be suppressed when nickel powder is generated using the pressurized container and subsequently recovered. The method for manufacturing nickel powder comprises charging a pressurized container with a nickel sulfate ammine complex solution and seed crystals, adding hydrogen gas to the pressurized container, and reducing the nickel included in the nickel sulfate ammine complex solution, wherein, when a nickel powder slurry obtained in the pressurized container is extracted to a flash vessel connected to the pressurized container, the slurry is extracted to the flash vessel while the supply rate of the nickel ammine complex solution to the pressurized container and/or the extraction rate of the nickel slurry from the pressurized container is controlled so the liquid level in the pressurized container is in a fixed range.

Abstract: Provided is a method for producing cobalt powder with high reaction efficiency by controlling the amount of added seed crystals when cobalt powder is produced from a solution containing a cobalt ammine sulfate complex. The method sequentially includes: a mixing step of adding, to the solution containing a cobalt ammine sulfate complex, cobalt powder as seed crystals in an amount of 1.5 times or more and 3.0 times or less the amount of cobalt contained in the solution and then adding a dispersant in an amount of 1.5% by weight to 3.0% by weight of the added seed crystals to form a mixture slurry; and a reduction and precipitation step of charging a reaction vessel with the mixture slurry and then blowing hydrogen gas into the mixture slurry to reduce cobalt complex ions contained in the mixture slurry to form cobalt precipitate on the surface of the seed crystals.

Abstract: Provided is a production method for producing coarse particles of high purity Co powder from a cobalt ammine sulfate complex solution using fine Co powder and using industrially inexpensive H2 gas.

Abstract: The wiring board 1 is provided with the first resin insulating layer 7, the first filled via 19 penetrating it and filled and formed by the plating, and the second conductor layer 29 formed by the plating on them. In them, the second conductor layer 29 comprises the first resin insulating layer 7, the electroless plating layer 33 formed on the first filled via 19, and the electrolytic plating layer 37 composed of plating particle of substantially uniform size, formed thereon.

Abstract: A process for producing a substrate 1 having a base-metal plating layer, which includes an immersion step for immersing the substrate 1 in a plating solution contained in a plating tank 33, to thereby form a base-metal plating layer; a washing step for removing the substrate 1 from the plating tank 33, transferring the substrate 1 to a washing tank, and washing the substrate 1; and a cooling step for applying a cooling liquid to the substrate 1 during at least a portion of the period during which the substrate is transferred to a position where the washing step is carried out after completing the immersion step, to thereby cool the substrate 1. An apparatus for carrying out the above process is also disclosed.

Abstract: The wiring board 1 is provided with the first resin insulating layer 7, the first filled via 19 penetrating it and filled and formed by the plating, and the second conductor layer 29 formed by the plating on them. In them, the second conductor layer 29 comprises the first resin insulating layer 7, the electroless plating layer 33 formed on the first filled via 19, and the electrolytic plating layer 37 composed of plating particle of substantially uniform size, formed thereon.

Abstract: A process for producing a substrate 1 having a base-metal plating layer, which includes an immersion step for immersing the substrate 1 in a plating solution contained in a plating tank 33, to thereby form a base-metal plating layer; a washing step for removing the substrate 1 from the plating tank 33, transferring the substrate 1 to a washing tank, and washing the substrate 1; and a cooling step for applying a cooling liquid to the substrate 1 during at least a portion of the period during which the substrate is transferred to a position where the washing step is carried out after completing the immersion step, to thereby cool the substrate 1. An apparatus for carrying out the above process is also disclosed.

Abstract: A composition for visible light sensitive electrodeposition coating which comprises (A) a photocurable resin having light sensitive groups capable of being crosslinked or polymerized by light irradiation and ionic groups, (B) a sensitizer which is excited by absorption of visible light and has a property to interact with the resin (A), (C) a water-insoluble polymerization initiator, and optionally, (D) at least one specific nitrogen-containing compound; and an image-forming method which comprises (i) coating the surface of a conductor by electrodeposition with the aforesaid composition, (ii) exposing the resulting film by electrodeposition by partially irradiating the film with visible light, and then (iii) contacting the resulting film with a developing solution to remove the unexposed areas.

Abstract: A visible radiation sensitive composition comprising:(A) a photosetting resin containing a photosensitive group capable of crosslinking or polymerizing by photoirradiation,(B) a sensitizer represented by the formula (i): ##STR1## wherein R.sub.1 and R.sub.2 are the same or different lower alkyl, and R.sub.3 is a hydrogen atom, lower alkyl group, alkoxyalkyl group, hydroxyalkoxyalkyl group or alkoxycarbonylalkyl group, and(C) a polymerization initiator.

Abstract: An antibiotic composition which comprises 7.beta.-[(Z)-(5-amino-1,2,4-thiadiazol-3-yl)-2(Z)-methoxyiminoacetamide]-3 (1-imidazo[1,2-b]pyridazinium)-methyl-3-cephem-4-carboxylate hydrochloride and a pharmaceutically acceptable water-soluble basic substance, which is stable in storage and improved in solubility as well as free of local actions or hemolytic action.

Abstract: A fluid control valve, which relates to fluid control valves in which a pilot passage is opened or closed as a pilot flow is detected in the said pilot passage by means of a limit orifice mechanism located at the middle of the flow and a valve spool is switched by the differential pressure produced in the fluid passing the said limit orifice mechanism so as to effect a switch-over between unloaded and loaded states, and incorporates, as the said valve spool, a first valve spool effecting the switching action based on the differential pressure of the fluid passing the limit orifice mechanism and a second valve spool arranged in series with the first valve spool effecting a switching action being effected by the fluid pressure so that a load check function may also be provided.