JPS64210A - Production of fine gold particles - Google Patents
Production of fine gold particlesInfo
- Publication number
- JPS64210A JPS64210A JP15477687A JP15477687A JPS64210A JP S64210 A JPS64210 A JP S64210A JP 15477687 A JP15477687 A JP 15477687A JP 15477687 A JP15477687 A JP 15477687A JP S64210 A JPS64210 A JP S64210A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- particle size
- iodide
- alkali hydroxide
- gold
- 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.)
- Pending
Links
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
PURPOSE: To produce singly dispersed fine gold particles having a narrow particle size distribution by adding a nonionic surfactant to an aq. soln. contg. iodoauric acid ions and by further adding alkali hydroxide to the aq. soln. to decompose gold iodide.
CONSTITUTION: A nonionic surfactant such as 'ETHOMID(R)' is added to an aq. soln. contg. iodoauric acid ions prepd. by dissolving gold iodide in an aq. potassium iodide soln. or by other method. Alkali hydroxide is then added to the aq. soln. to decompose gold iodide. The proper concn. of the alkali hydroxide is about 0.1W6N. The pref. reaction temp. is about 20W70°C and the particle size of formed particles can be controlled by changing the temp. condition. The reaction is terminated at ≥about 12.5, preferably ≥about 13 pH. thus, singly dispersed fine gold particles of ≤several μm particle size are obtd.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154776A JPH01210A (en) | 1987-06-22 | Method for producing gold particles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154776A JPH01210A (en) | 1987-06-22 | Method for producing gold particles |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64210A true JPS64210A (en) | 1989-01-05 |
JPH01210A JPH01210A (en) | 1989-01-05 |
Family
ID=
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6369920B1 (en) * | 1999-08-10 | 2002-04-09 | Zebra Imaging, Inc. | Reference beam deflecting element for recording a hologram |
US6894815B1 (en) | 2001-05-25 | 2005-05-17 | Zebra Imaging, Inc. | Reference beam absorbers-blockers |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6369920B1 (en) * | 1999-08-10 | 2002-04-09 | Zebra Imaging, Inc. | Reference beam deflecting element for recording a hologram |
US6894815B1 (en) | 2001-05-25 | 2005-05-17 | Zebra Imaging, Inc. | Reference beam absorbers-blockers |
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