Silver particle dispersion and process for producing the same

A technology of silver particles and dispersion liquids, applied in chemical instruments and methods, conductive materials dispersed in non-conductive inorganic materials, silver compounds, etc., can solve the problems of high cohesion and difficulty in obtaining nanoparticle dispersion liquids, etc.

Inactive Publication Date: 2009-11-18
DOWA ELECTRONICS MATERIALS CO LTD
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] On the other hand, the liquid-phase method is basically a method suitable for mass synthesis, but there is a problem that the aggregation of the nanoparticles is very high in the liquid, so it is difficult to obtain a nanoparticle dispersion liquid dispersed as a single particle

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] To 140 mL of isobutanol (special grade manufactured by Wako Pure Chemical Industries, Ltd.) as a liquid organic medium and a reducing agent, oleylamine (manufactured by Wako Pure Chemical Industries, Ltd.) having one unsaturated bond in the molecule of the compound as an organic protective material was added. Mw=267) 185.83 mL and 19.212 g of silver nitrate crystals (manufactured by Kanto Chemical Co., Ltd.) as a silver compound were stirred with a magnetic stirrer to dissolve the silver nitrate.

[0083] The solution was transferred to a container with a reflux device, placed in an oil bath, and nitrogen gas as an inert gas was blown into the container at a flow rate of 400 mL / min, while using a magnetic stirrer to stir the solution at a rotational speed of 100 rpm , while heating, reflux at a temperature of 100° C. for 2 hours and 30 minutes. Thereafter, the temperature was raised to 108° C., and reflux was performed for 2 hours and 30 minutes to complete the reaction...

Embodiment 2

[0087] To 120 mL of isobutanol (special grade manufactured by Wako Pure Chemical Industries, Ltd.) as a liquid organic medium and a reducing agent, oleylamine (manufactured by Wako Pure Chemical Industries, Ltd.) having one unsaturated bond in the molecule of the compound as an organic protective material was added. Mw=267) 199.11 mL and 20.59 g of silver nitrate crystals (manufactured by Kanto Chemical Co., Ltd.) as a silver compound were stirred with a magnetic stirrer to dissolve the silver nitrate.

[0088] The solution was transferred to a container with a reflux device, placed in an oil bath, and nitrogen gas as an inert gas was blown into the container at a flow rate of 400 mL / min, while using a magnetic stirrer to stir the solution at a rotational speed of 100 rpm , while heating, and reflux at a temperature of 108° C. for 5 hours to complete the reaction. At this time, the rate of temperature increase to 108°C was 2°C / min.

[0089] The total amount of the slurry afte...

Embodiment 3

[0092] To 120 mL of isobutanol (special grade manufactured by Wako Pure Chemical Industries, Ltd.) as a liquid organic medium and a reducing agent, oleylamine (manufactured by Wako Pure Chemical Industries, Ltd.) having one unsaturated bond in the molecule of the compound as an organic protective material was added. Mw=267) 199.11 mL and 20.59 g of silver nitrate crystals (manufactured by Kanto Chemical Co., Ltd.) as a silver compound were stirred with a magnetic stirrer to dissolve the silver nitrate.

[0093] The solution was transferred to a container with a reflux device, placed in an oil bath, and nitrogen gas as an inert gas was blown into the container at a flow rate of 400 mL / min, while using a magnetic stirrer to stir the solution at a rotational speed of 100 rpm , while heating, and reflux at a temperature of 108° C. for 5 hours to complete the reaction. At this time, the rate of temperature increase to 108°C was 2°C / min.

[0094] The total amount of the slurry afte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
boiling pointaaaaaaaaaa
viscosityaaaaaaaaaa
Login to view more

Abstract

A silver particle dispersion which is a dispersion of silver particles in a liquid organic medium which has a boiling point of 60-300 DEG C and is nonpolar or lowly polar, the surface of the particles being coated with an organic protective material and the particles having an average particle diameter (DTEM) of 50 nm or smaller. It is characterized in that the organic protective material is an amine compound having one or more unsaturated bonds per molecule. This silver particle dispersion can be produced by reducing a silver compound in a liquid comprising one or more alcohols or polyols which function as a reducing agent, the reduction reaction being conducted in the presence of an amine compound having one or more unsaturated bonds per molecule and having a molecular weight of 100-1,000.

Description

technical field [0001] The present invention relates to a silver particle dispersion obtained by dispersing silver particle powder with a particle diameter of nanometer order in a liquid medium (called a liquid organic medium) of an organic compound and a method for producing the same. A wiring-forming material for forming a fine circuit pattern, for example, a silver particle dispersion of a wiring-forming material by an inkjet method and a method for producing the same. The silver particle dispersion liquid of the present invention is suitable as a material for forming wiring of an LSI substrate or a FPD (flat panel display), and a material for forming wiring such as fine trenches, via holes, and embedding of contact holes. It is suitable as a coloring material for vehicle painting and the like. Background technique [0002] Since the specific surface area becomes very large when the size of the solid substance is in the nm order (nanometer order), although it is a solid,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/00H01B1/22B22F1/0545C09D7/62
CPCB22F9/24C09D11/30C09D7/1225C08K9/04C09D7/1266B22F1/0022B82Y30/00C08K3/08C09D11/52C09D7/62C09D7/67Y10T428/2982Y10T428/2991Y10T428/2998B22F1/0545H01B1/22C01G5/00
Inventor 佐藤王高尾木孝造
Owner DOWA ELECTRONICS MATERIALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap