JPS64211A - Production of fine gold particles - Google Patents

Production of fine gold particles

Info

Publication number
JPS64211A
JPS64211A JP15477787A JP15477787A JPS64211A JP S64211 A JPS64211 A JP S64211A JP 15477787 A JP15477787 A JP 15477787A JP 15477787 A JP15477787 A JP 15477787A JP S64211 A JPS64211 A JP S64211A
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
Application number
JP15477787A
Other languages
Japanese (ja)
Other versions
JPH01211A (en
Inventor
Motoyuki Nakanishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tanaka Kikinzoku Kogyo KK
Original Assignee
Tanaka Kikinzoku Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tanaka Kikinzoku Kogyo KK filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP62-154777A priority Critical patent/JPH01211A/en
Priority claimed from JP62-154777A external-priority patent/JPH01211A/en
Publication of JPS64211A publication Critical patent/JPS64211A/en
Publication of JPH01211A publication Critical patent/JPH01211A/en
Pending legal-status Critical Current

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  • 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 an anionic surfactant to an aq. soln. contg. iodoauric acid ions and by further adding alkali hydroxide to the aq. soln. to decompose gold iodide.
CONSTITUTION: An anionic surfactant such as 'SURFLON S111(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
JP62-154777A 1987-06-22 Method for producing gold particles Pending JPH01211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-154777A JPH01211A (en) 1987-06-22 Method for producing gold particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-154777A JPH01211A (en) 1987-06-22 Method for producing gold particles

Publications (2)

Publication Number Publication Date
JPS64211A true JPS64211A (en) 1989-01-05
JPH01211A JPH01211A (en) 1989-01-05

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004049902A (en) * 1999-01-22 2004-02-19 Adachi Kogyo:Kk Slide-proof cut scissors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004049902A (en) * 1999-01-22 2004-02-19 Adachi Kogyo:Kk Slide-proof cut scissors

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