JPS5638406A - Manufacture of gold powder - Google Patents
Manufacture of gold powderInfo
- Publication number
- JPS5638406A JPS5638406A JP11259579A JP11259579A JPS5638406A JP S5638406 A JPS5638406 A JP S5638406A JP 11259579 A JP11259579 A JP 11259579A JP 11259579 A JP11259579 A JP 11259579A JP S5638406 A JPS5638406 A JP S5638406A
- Authority
- JP
- Japan
- Prior art keywords
- gold
- aqueous solution
- gold powder
- manufacture
- feso
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
PURPOSE: To manufacture a gold powder having excellent surface shape by adding a specific proportion of FeSO4 or FeCl2 and Na2SO3 or K2SO3, together with an organic dispersant, to an aqueous solution of gold chloride and causing them to react.
CONSTITUTION: A gold chloride aqueous solution is mixed at the rate of 0.02W 0.3g/l of an organic dispersant, e.g., polyvinyl alcohol, stearic acid, or sodium benzene sulfonate, and then the mixture is further mixed with an aqueous solution containing 0.7W0.9 equivalents of FeSO4.7H2O or FeCl2 as a reducing agent for gold chloride, or with a small amount of sulfuric acid, and further with 0.1W0.3 equivalents of an auxiliary reducing agent, e.g., sulfites such as Na2SO3, K2SO3, etc., and they are reacted at a temperature below 30°C. The gold powder being deposited is filtered, washed, and dried to obtain a gold powder for a conductive gold paste, having a very smooth surface shape, which is used in the electronic industry.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11259579A JPS5638406A (en) | 1979-09-03 | 1979-09-03 | Manufacture of gold powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11259579A JPS5638406A (en) | 1979-09-03 | 1979-09-03 | Manufacture of gold powder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5638406A true JPS5638406A (en) | 1981-04-13 |
JPS6140003B2 JPS6140003B2 (en) | 1986-09-06 |
Family
ID=14590664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11259579A Granted JPS5638406A (en) | 1979-09-03 | 1979-09-03 | Manufacture of gold powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5638406A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60154903A (en) * | 1984-01-20 | 1985-08-14 | Sumitomo Rubber Ind Ltd | Reinforcing construction of bead portion of radial tire for heavy load |
JPS61143207A (en) * | 1984-12-13 | 1986-06-30 | Sumitomo Rubber Ind Ltd | Bead portion reinforcing structure of radial tire for heavy load |
JPH0374209A (en) * | 1989-08-15 | 1991-03-28 | Bridgestone Corp | Pneumatic radial tire superior in durability of bead portion |
US5320703A (en) * | 1991-05-09 | 1994-06-14 | Canon Kabushiki Kaisha | Process for forming gold crystal film |
JP2004200190A (en) * | 2002-12-16 | 2004-07-15 | Kunihito Kawamoto | Method for forming metallic film and method for manufacturing ceramic electronic part |
JP2008019504A (en) * | 2006-07-10 | 2008-01-31 | Samsung Electro-Mechanics Co Ltd | Manufacturing method of metal nanoparticle |
-
1979
- 1979-09-03 JP JP11259579A patent/JPS5638406A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60154903A (en) * | 1984-01-20 | 1985-08-14 | Sumitomo Rubber Ind Ltd | Reinforcing construction of bead portion of radial tire for heavy load |
JPS61143207A (en) * | 1984-12-13 | 1986-06-30 | Sumitomo Rubber Ind Ltd | Bead portion reinforcing structure of radial tire for heavy load |
JPH0374209A (en) * | 1989-08-15 | 1991-03-28 | Bridgestone Corp | Pneumatic radial tire superior in durability of bead portion |
US5320703A (en) * | 1991-05-09 | 1994-06-14 | Canon Kabushiki Kaisha | Process for forming gold crystal film |
JP2004200190A (en) * | 2002-12-16 | 2004-07-15 | Kunihito Kawamoto | Method for forming metallic film and method for manufacturing ceramic electronic part |
JP2008019504A (en) * | 2006-07-10 | 2008-01-31 | Samsung Electro-Mechanics Co Ltd | Manufacturing method of metal nanoparticle |
Also Published As
Publication number | Publication date |
---|---|
JPS6140003B2 (en) | 1986-09-06 |
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