Abstract: The production process of an electromagnetic wave shielding material of the present invention comprises screen printing a conductive paste containing conductive particles, binder and solvent in a geometrical pattern on the surface of a transparent porous layer of a transparent resin substrate provided with the transparent porous layer, the porous layer containing as a main component thereof at least one type selected from the group consisting of an oxide ceramic, a non-oxide ceramic and a metal, followed by forming a conductive portion in a geometrical pattern on the surface of the transparent porous layer by heat treatment. An electromagnetic wave shielding material produced according to this production process has high electromagnetic wave shielding effects and superior transparency and visibility.

Abstract: A method for producing a surface-treated silver-containing powder comprises vacuum freeze drying a dispersion liquid, which is obtained by dispersing silver or silver compound particles (a) in a solvent together with a surfactant (b) of an alkylamine type or an alkylamine salt type, or a phosphate type having a phosphorus content of 0.5 to 10% by mass so that the surfactant (b) is adsorbed in the surface of the silver or silver compound particles (a), thereby producing a silver-containing powder (c) whose surface is treated with the surfactant (b). Moreover, a silver paste is produced by dispersing the surface-treated silver-containing powder (c) in a solvent, or in a solvent with a resin.

Abstract: The production process of an electromagnetic wave shielding material of the present invention comprises screen printing a conductive paste containing conductive particles, binder and solvent in a geometrical pattern on the surface of a transparent porous layer of a transparent resin substrate provided with the transparent porous layer, the porous layer containing as a main component thereof at least one type selected from the group consisting of an oxide ceramic, a non-oxide ceramic and a metal, followed by forming a conductive portion in a geometrical pattern on the surface of the transparent porous layer by heat treatment. An electromagnetic wave shielding material produced according to this production process has high electromagnetic wave shielding effects and superior transparency and visibility.

Abstract: A method for producing a surface-treated silver-containing powder comprises vacuum freeze drying a dispersion liquid, which is obtained by dispersing silver or silver compound particles (a) in a solvent together with a surfactant (b) of an alkylamine type or an alkylamine salt type, or a phosphate type having a phosphorus content of 0.5 to 10% by mass so that the surfactant (b) is adsorbed in the surface of the silver or silver compound particles (a), thereby producing a silver-containing powder (c) whose surface is treated with the surfactant (b). Moreover, a silver paste is produced by dispersing the surface-treated silver-containing powder (c) in a solvent, or in a solvent with a resin.

Abstract: The present invention provides a process for producing a porous sintered metal, in which the pore diameter distribution of porous sintered metal can be easily controlled. The present invention also provides a process including: forming a molding containing a metal powder, a pore forming material, and a binder resin: heating the molding at the decomposition temperature of the pore forming material to thereby effect thermal decomposition thereof: and then sintering the molding at a sintering temperature higher than the decomposition temperature, wherein as the pore forming material, there is used particles of polyhydroxyalkanoate produced in microbial cells. The above molding may be formed by coating or printing onto a base material, a metal powder dispersion containing a metal powder, a pore forming material, a binder resin, and a solvent so as to form a coated material or printed material, and then detaching the base material from the coated material or printed material.

Abstract: The present invention provides a molding having excellent workability and a production method therefore. In addition, the present invention provides a molding with which a capacitor element having excellent electric properties can be obtained, and which has excellent workability that can be used to make a porous anode element for an electrolytic capacitor. The molding with a substratum has a sheet-shaped substratum and a molding which is provided on this sheet-shaped substratum such that the molding can be separated, in which the molding has a protective layer and a porous-body-forming layer, the protective layer includes resin as a main component, and the porous-body-forming layer includes valve action metal powder and binder resin.

Abstract: The present invention provides a molding having excellent workability and a production method therefore. In addition, the present invention provides a molding with which a capacitor element having excellent electric properties can be obtained, and which has excellent workability that can be used to make a porous anode element for an electrolytic capacitor. The molding with a substratum has a sheet-shaped substratum and a molding which is provided on this sheet-shaped substratum such that the molding can be separated, in which the molding has a protective layer and a porous-body-forming layer, the protective layer includes resin as a main component, and the porous-body-forming layer includes valve action metal powder and binder resin.

Abstract: An assembly of a dry coating (A) that has a magnetic powder with a saturation flux density of at least 100 emu/g is dispersed in a binder. A magnetostrictive metal (B), when the coating (A) is magnetized, resonates mechanically at a predetermined frequency in the range of varying frequencies. The varying frequencies are generated from an applied alternating magnetic field. Changes in flux density and permeability are experienced. When the coating (A) is not magnetized, metal (B) does not resonate at the predetermined frequency, thus experiencing no changes in flux density or permeability. The dry coating (A) and the metal (B) have a superposed relationship in such a way that the latter is capable of mechanical resonance, the marker being so adapted that when said coating (A) is magnetized, the predetermined frequency at which the flux density or permeability will change is generated as a signal in response to the applied alternating magnetic field.