Invention Grant
- Patent Title: Method for producing dispersion liquid containing silver nanoparticles, and dispersion liquid containing silver nanoparticles
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Application No.: US15030816Application Date: 2014-10-01
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Publication No.: US11091663B2Publication Date: 2021-08-17
- Inventor: Kazuki Okamoto , Yuki Iguchi
- Applicant: DAICEL CORPORATION
- Applicant Address: JP Osaka
- Assignee: DAICEL CORPORATION
- Current Assignee: DAICEL CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2013-221420 20131024
- International Application: PCT/JP2014/076270 WO 20141001
- International Announcement: WO2015/060084 WO 20150430
- Main IPC: H01B1/22
- IPC: H01B1/22 ; B22F1/00 ; C09D11/36 ; C09D11/52 ; C09D11/322 ; B22F9/30 ; H05K1/09 ; H01L21/28 ; H01L21/288 ; B82Y40/00 ; B82Y30/00 ; B41J2/01

Abstract:
The present invention provides a dispersion liquid containing silver nano-particles that develops excellent conductivity by low-temperature calcining and has silver nano-particles stably and well dispersed in a dispersion solvent, and a method for producing the dispersion liquid containing silver nano-particles. [solution] A method for producing a dispersion liquid containing silver nano-particles, comprising: mixing a silver compound with amines comprising an aliphatic monoamine (A) comprising an aliphatic hydrocarbon group and one amino group, said hydrocarbon group having 6 or more carbon atoms in total; and further comprising at least one of: an aliphatic monoamine (B) comprising an aliphatic hydrocarbon group and one amino group, said hydrocarbon group having 5 or less carbon atoms in total; and an aliphatic diamine (C) comprising an aliphatic hydrocarbon group and two amino groups, said hydrocarbon group having 8 or less carbon atoms in total; to form a complex compound comprising the silver compound and the amines; thermally decomposing the complex compound by heating to form silver nano-particles; and dispersing the silver nano-particles in a dispersion solvent containing an alcohol-based solvent and an aliphatic hydrocarbon-based solvent in a specific ratio.
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