# US 9,520,205 B2 · Copper containing particle and method for manufacturing same

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- Number: US 9,520,205 B2
- Document ID: US9520205B2
- Status: Granted
- Kind: B2
- Application number: 14/433,814
- Filed: 2014-05-12
- Published: 2015-10-01
- Granted: 2016-12-13
- Earliest claimed: 2013-05-10
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Jong Min Shin; Jung Hyun Seo; Young Chang Byun; Jae Hoon Choe
- Web page: https://patentgrep.com/patent/US9520205B2

## CPC

- H01B 1/02: mainly consisting of metals or alloys
- B22F 1/065: Spherical particles
- B22F 1/102: Metallic powder coated with organic material
- B22F 1/17: Metallic particles coated with metal
- B22F 1/18: Non-metallic particles coated with metal
- B22F 9/24: starting from liquid metal compounds, e.g. solutions
- C03C 17/3644: {the metal being silver}
- C09D 5/24: Electrically-conducting paints {(conductive materials H01B1/00)}
- H01B 1/026: {Alloys based on copper}
- H01B 1/22: the conductive material comprising metals or alloys
- B22F 2301/10: Copper
- B22F 2301/255: Silver or gold
- B22F 2998/10: Processes characterised by the sequence of their steps
- B22F 2999/00: Aspects linked to processes or compositions used in powder metallurgy
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

The present invention relates to a copper containing particle with a surface layer for preventing oxidation and a method for manufacturing the same, and provides a copper containing particle including: a core containing a copper component; a shell formed on the surface of the core, containing a silver component, and having at least one pore; and a filler part configured to fill the pore of the shell and contain an antioxidant component.

## Claims

### Claim 1

A copper-containing particle comprising:
a core containing a copper component;
a shell formed on the surface of the core, containing a silver component, and having at least one pore; and
a filler part configured to fill the pore of the shell and contain an antioxidant component,
wherein a size of the pore is in the range of 0.1 to 100 nm,
wherein the copper-containing particle begins to be oxidized at a temperature over 500° C. based on thermogravimetric analysis, and
wherein the antioxidant component is a compound including a thiocyanate group.

### Claim 2 (depends on 1)

The particle of claim 1, wherein the antioxidant component does not react with the silver component.

### Claim 3 (depends on 1)

The particle of claim 1, wherein a thickness variation of the shell is ±50% of an average thickness of the shell.

### Claim 4 (depends on 1)

The particle of claim 1, wherein the core is one or more types selected from the group consisting of a copper particle, a glass particle coated with copper, a ceramic particle coated with copper, a metal particle coated with copper, a polymer particle coated with copper, and a graphite particle coated with copper.

### Claim 5 (depends on 4)

The particle of claim 4, wherein a ceramic of the ceramic particle coated with the copper is one or more types selected from the group consisting of aluminum oxide, aluminum nitride, beryllium oxide, tungsten carbide, silicon carbide, and zirconium oxide.

### Claim 6 (depends on 4)

The particle of claim 4, wherein a metal of the metal particle coated with the copper is one or more types selected from the group consisting of nickel, iron, silicon, tungsten, cobalt, and aluminum.

### Claim 7 (depends on 1)

The particle of claim 1, wherein the content of the silver component is in the range of 0.1 to 50 wt % with respect to a total weight of the copper-containing particle.

### Claim 8 (depends on 1)

The particle of claim 1, wherein the content of the antioxidant component is in the range of 0.1 to 50 wt % with respect to a total weight of the copper-containing particle.

### Claim 9 (depends on 1)

A conductive paste composition comprising the copper-containing particle of claim 1, a binder resin, and a solvent.

### Claim 10 (depends on 9)

The composition of claim 9, further comprising a glass frit.