Abstract: Provided are a silver powder and a method of producing the same. The method of producing the silver powder includes a first surface smoothing step of causing fine silver particles having internal voids to mechanically collide with one another; a fine powder removal step of dispersing fine silver particles present after the first surface smoothing step using high-pressure airflow while removing fine powder; and a second surface smoothing step of causing fine silver particles present after the fine powder removal step to mechanically collide with one another.

Abstract: This disclosure relates to a method of manufacturing an electrically conductive thick film comprising steps of: (a) applying a fine silver particle dispersion on a substrate, wherein the fine silver particle dispersion comprises, (i) 60 to 95 wt. % of fine silver particles, wherein particle diameter (D50) of the fine silver particles is 50 to 300 nm, (ii) 4.5 to 39 wt. % of a solvent; and (iii) 0.1 to 3 wt. % of a resin, wherein the glass transition temperature (Tg) of the resin is 70 to 300° C., wherein the weight percentages are based on the weight of the fine silver particle dispersion; and (b) heating the applied fine silver particle dispersion at 80 to 1000° C.

Abstract: This disclosure relates to a fine silver particle dispersion comprising: (i) 60 to 95 wt. % of fine silver particles, wherein particle diameter (D50) of the fine silver particles is 50 to 300 nm, (ii) 4.5 to 39 wt. % of a solvent; and (iii) 0.1 to 3 wt. % of a resin, wherein the glass transition temperature (Tg) of the resin is 70 to 300° C., wherein the weight percentages are based on the weight of the fine silver particle dispersion.

Abstract: This disclosure relates to a fine silver particle dispersion including: (1) 65 to 95.4% by weight of fine silver particles which have an average primary particle diameter of 10 to 190 nm and which comprise 25% by number or less of silver particles having a primary particle diameter of 100 nm or larger, (2) 4.5 to 34.5% by weight of a solvent, and (3) 0.1 to 1.0% by weight of ethyl cellulose having a weight average molecular weight of 10,000 to 120,000.

Abstract: There is produced a fine silver particle dispersing solution which contains: fine silver particles (the content of silver in the fine silver particle dispersing solution being 30 to 95% by weight), which have an average primary particle diameter of greater than 100 nm and not greater than 300 nm and which are coated with an amine having a carbon number of 8 to 12, such as octylamine, serving as an organic protective material; a polar solvent (5 to 70% by weight) having a boiling point of 150 to 300° C.; and an acrylic dispersing agent (5% by weight or less with respect to the fine silver particles), such as a dispersing agent of at least one of acrylic acid ester and methacrylic acid ester.

Abstract: This disclosure relates to a conductive paste comprising a fine silver particle dispersion and a glass frit, wherein the fine silver particle dispersion comprising: (1) 65 to 95.4% by weight of fine silver particles which have average primary particle diameter of 10 to 190 nm and which comprise 25% by number or less of silver particles having primary particle diameter of 100 nm or larger, (2) 4.5 to 34.5% by weight of a solvent, (3) 0.1 to 1.0% by weight of ethyl cellulose having weight average molecular weight of 10,000 to 120,000. Also provided are: a method of manufacturing an electrically conductive thick film comprising steps of: (a) applying said fine silver particle dispersion on a substrate, and (b) heating the applied fine silver particle dispersion at 80 to 1000° C.; and an electrical device comprising a conductive thick film made with the foregoing paste.

Abstract: This disclosure relates to a conductive paste comprising a fine silver particle dispersion and a glass frit, wherein the fine silver particle dispersion comprising: (1) 65 to 95.4% by weight of fine silver particles which have average primary particle diameter of 10 to 190 nm and which comprise 25% by number or less of silver particles having primary particle diameter of 100 nm or larger, (2) 4.5 to 34.5% by weight of a solvent, (3) 0.1 to 1.0% by weight of ethyl cellulose having weight average molecular weight of 10,000 to 120,000. Also provided are: a method of manufacturing an electrically conductive thick film comprising steps of: (a) applying said fine silver particle dispersion on a substrate, and (b) heating the applied fine silver particle dispersion at 80 to 1000 ° C.; and an electrical device comprising a conductive thick film made with the foregoing paste.

Abstract: This disclosure relates to a fine silver particle dispersion including: (1) 65 to 95.4% by weight of fine silver particles which have an average primary particle diameter of 10 to 190 nm and which comprise 25% by number or less of silver particles having a primary particle diameter of 100 nm or larger, (2) 4.5 to 34.5% by weight of a solvent, and (3) 0.1 to 1.0% by weight of ethyl cellulose having a weight average molecular weight of 10,000 to 120,000.

Abstract: This disclosure relates to a method of manufacturing an electrically conductive thick film comprising steps of: (a) applying a fine silver particle dispersion on a substrate, wherein the fine silver particle dispersion comprises, (i) 60 to 95 wt. % of fine silver particles, wherein particle diameter (D50) of the fine silver particles is 50 to 300 nm, (ii) 4.5 to 39 wt. % of a solvent; and (iii) 0.1 to 3 wt. % of a resin, wherein the glass transition temperature (Tg) of the resin is 70 to 300° C., wherein the weight percentages are based on the weight of the fine silver particle dispersion; and (b) heating the applied fine silver particle dispersion at 80 to 1000° C.

Abstract: This disclosure relates to a fine silver particle dispersion comprising: (i) 60 to 95 wt. % of fine silver particles, wherein particle diameter (D50) of the fine silver particles is 50 to 300 nm, (ii) 4.5 to 39 wt. % of a solvent; and (iii) 0.1 to 3 wt. % of a resin, wherein the glass transition temperature (Tg) of the resin is 70 to 300° C., wherein the weight percentages are based on the weight of the fine silver particle dispersion.

Abstract: There is produced a fine silver particle dispersing solution which contains: fine silver particles (the content of silver in the fine silver particle dispersing solution being 30 to 95% by weight), which have an average primary particle diameter of greater than 100 nm and not greater than 300 nm and which are coated with an amine having a carbon number of 8 to 12, such as octylamine, serving as an organic protective material; a polar solvent (5 to 70% by weight) having a boiling point of 150 to 300° C.; and an acrylic dispersing agent (5% by weight or less with respect to the fine silver particles), such as a dispersing agent of at least one of acrylic acid ester and methacrylic acid ester.