Abstract: The present invention provides a metal paste composition which can obtain the calcined bodies having low volume resistivity in a wiring substrate after calcining. More specifically, the present invention provides a metal paste composition comprising a metal, an aliphatic polycarbonate, and an organic solvent.

Abstract: Metal nanoparticles having improved migration resistance are provided. The present invention relates to a method for manufacturing composite nanoparticles including obtaining composite nanoparticles containing at least silver and copper in a single particle by heat treating a mixture containing an organic silver compound and an organic copper compound at a temperature of 150° C. or more in a non-oxidative atmosphere in the presence of a tertiary amine compound represented by the general formula R1R2R3N (wherein R1 through R3 are optionally substituted alkyl groups or aryl groups that may be the same or different, R1 through R3 may be linked in a ring, and the number of carbon atoms in each of R1 through R3 is 5 through 18 and may be the same or different).

Abstract: Copper-containing nanoparticles with excellent oxidation resistance is provided. The present invention relates to a method for manufacturing copper-containing nanoparticles including obtaining copper-containing nanoparticles that contain an organic component by heat treating an organic copper compound at a temperature equal to or higher than a decomposition initiation temperature of the compound and lower than a complete decomposition temperature of the compound in a non-oxidative atmosphere in the presence of an organic material containing a 1,2-alkanediol having 5 or more carbon atoms and/or a derivative thereof.

Abstract: The present invention provides a metal paste composition which can obtain the calcined bodies having low volume resistivity in a wiring substrate after calcining. More specifically, the present invention provides a metal paste composition comprising a metal, an aliphatic polycarbonate, and an organic solvent.

Abstract: Copper-containing nanoparticles with excellent oxidation resistance is provided. The present invention relates to a method for manufacturing copper-containing nanoparticles including obtaining copper-containing nanoparticles that contain an organic component by heat treating an organic copper compound at a temperature equal to or higher than a decomposition initiation temperature of the compound and lower than a complete decomposition temperature of the compound in a non-oxidative atmosphere in the presence of an organic material containing a 1,2-alkanediol having 5 or more carbon atoms and/or a derivative thereof.

Abstract: Metal nanoparticles having improved migration resistance are provided. The present invention relates to a method for manufacturing composite nanoparticles including obtaining composite nanoparticles containing at least silver and copper in a single particle by heat treating a mixture containing an organic silver compound and an organic copper compound at a temperature of 150° C. or more in a non-oxidative atmosphere in the presence of a tertiary amine compound represented by the general formula R1R2R3N (wherein R1 through R3 are optionally substituted alkyl groups or aryl groups that may be the same or different, R1 through R3 may be linked in a ring, and the number of carbon atoms in each of R1 through R3 is 5 through 18 and may be the same or different).

Abstract: The main object of the present invention is to manufacture, on an industrial scale, metal nanoparticles with excellent dispersion stability, and therefore provides metal nanoparticles containing a metal component, further containing at least one of phosphorus, nitrogen, and oxygen, and the average particle size being from 1 to 100 nm.

Abstract: An object of the present invention is to manufacture of an industrial scale noble metal nanoparticles with superior dispersion stability. The present invention relates to a noble metal nanoparticle controlled to a mean particle size of 20 nm or less that is a metal nanoparticle comprising a noble metal component, and that contains at least one type of an organic component containing N and an organic component containing S.

Abstract: The main object of the present invention is to manufacture, on an industrial scale, metal nanoparticles with excellent dispersion stability, and therefore provides metal nanoparticles containing a metal component, further containing at least one of phosphorus, nitrogen, and oxygen, and the average particle size being from 1 to 100 nm.

Abstract: As a method of treating a frame of spectacles which enables fine color modulation with ease, good reproducibility, and at low cost, there is provided a method of treating the surface of a frame of spectacles characterized in that a surface treating composition comprising a metal complex is used to form a coating layer on part or the whole of the surface of the frame of spectacles.

Abstract: Primarily dedicated to the production of ultrafine particles with good dispersion stability on a industrial scale, the invention provides ultrafine particles characterized in that each of its constituent particles comprises a shell substantially composed of a metal organic compound and a core substantially composed of the metal derived from the metal organic compound, the ultrafine particles having a mean diameter of 1-100 nm, and a process for producing the ultrafine particles.

Abstract: Using a material comprising a metal organic compound and an inorganic filler, a composite film is obtained by coating a substrate with said material and heat-treating the coating. The obtained composite film improves the properties of the substrate.