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: 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: A synthetic fiber having an uneven surface structure consisting of wrinkles having ridges and recesses of the surface of the fiber and not presenting specular luster, which may be used, for example, as artificial hair for wigs, can be produced easily and stably by melt-spinning a starting synthetic resin such as nylon and passing the spun monofilament through a cooling bath at a temperature not lower than 30.degree. C. for a period of time sufficient for developing wrinkles in its surface. Inclusion of a pigment such as carbon black in an appropriate amount in the starting material is effective in providing dense distribution of wrinkles.

Abstract: A synthetic fiber having an uneven surface structure consisting of wrinkles having ridges and recesses of the surface of the fiber and not presenting specular luster, which may be used, for example, as artificial hair for wigs, can be produced easily and stably by melt-spinning a starting synthetic resin such as nylon and passing the spun mono-filament through a cooling bath at a temperature not lower than 30.degree. C. for a period of time sufficient for developing wrinkles in its surface. Inclusion of a pigment such as carbon black in an appropriate amount in the starting material is effective in providing dense distribution of wrinkles.

Abstract: An electrochromic display device containing at least two electrodes and electrolyte in contact therewith is disclosed, wherein the electrolyte is an electrolytic solution which has been gelated by polymer.

Abstract: Rubber compositions containing relatively large amounts of benzoic acid or monohydroxy benzoic acid providing vulcanized rubber products having improved adhesion to metallic or fibrous materials and an improved chipping and cutting resistance. This is a continuation of application Ser. No. 588,047, filed June 18, 1975, now abandoned.

Abstract: An electrochromic display device containing at least two electrodes and electrolyte in contact therewith is disclosed, wherein the electrolyte is an electrolytic solution which has been gelated by polymer.