Metal particle composition, method for producing metal particle composition, and paste

Patent metadata

Field	Value
Publication number	US-12221550-B2
Application number	US-202117792009-A
Country	US
Kind code	B2
Filing date	Jun 30, 2021
Priority date	Jul 20, 2020
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

To provide a metal particle composition having excellent oxidation resistance, which does not require a transition metal catalyst and can be applied to existing metal particles, a method for producing the metal particle composition, and a paste. The metal particle composition contains, with respect to 100 parts by mass of metal particles, 0.1 to 5 parts by mass of a compound (A) having a structure represented by the following general formula (I):

in which R 1 and R 2 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group, R 3 and R 4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group, an aryl group, or an aralkyl group.

First claim

The invention claimed is:

1. A metal particle composition comprising, with respect to 100 parts by mass of metal particles, 0.1 to 5 parts by mass of a compound (A) having a structure represented by the following general formula (I):

wherein R 1 and R 2 each independently represent an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, R 3 and R 4 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group.

2. The metal particle composition according to claim 1 , wherein
R 1 and R 2 in the general formula (I) are each independently an alkyl group having 1 to 4 carbon atoms.

3. The metal particle composition according to claim 1 , wherein
the metal particles are made of at least one metal selected from a group consisting of copper and iron.

4. The metal particle composition according to claim 1 , wherein
the compound (A) having the structure represented by the general formula (I) is a compound having a structure represented by the following general formula (II):

wherein R 5 and R 6 each independently represent an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, R 7 and R 8 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group, R 9 represents a hydrogen atom, a (meth)acryl group, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group.

5. The metal particle composition according to claim 1 , wherein
at least a part of the compound (A) is attached to the metal particles.

6. The metal particle composition according to claim 1 , wherein
R 1 and R 2 in the general formula (I) are each independently an alkyl group having 1 to 4 carbon atoms, and
the metal particles are made of at least one metal selected from a group consisting of copper and iron.

7. The metal particle composition according to claim 1 , wherein
R 1 and R 2 in the general formula (I) are each independently an alkyl group having 1 to 4 carbon atoms, and
the compound (A) having the structure represented by the general formula (I) is a compound having a structure represented by the following general formula (II):

wherein R 5 and R 6 each independently represent an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, R 7 and R 8 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group, R 9 represents a hydrogen atom, a (meth)acryl group, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group.

8. The metal particle composition according to claim 1 , wherein
the metal particles are made of at least one metal selected from a group consisting of copper and iron, and
the compound (A) having the structure represented by the general formula (I) is a compound having a structure represented by the following general formula (II):

wherein R 5 and R 6 each independently represent an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, R 7 and R 8 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group, R 9 represents a hydrogen atom, a (meth)acryl group, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group.

9. The metal particle composition according to claim 1 , wherein
R 1 and R 2 in the general formula (I) are each independently an alkyl group having 1 to 4 carbon atoms, and
at least a part of the compound (A) is attached to the metal particles.

10. The metal particle composition according to claim 1 , wherein
the metal particles are made of at least one metal selected from a group consisting of copper and iron, and
at least a part of the compound (A) is attached to the metal particles.

11. The metal particle composition according to claim 1 , wherein
the compound (A) having the structure represented by the general formula (I) is a compound having a structure represented by the following general formula (II):

wherein R 5 and R 6 each independently represent an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms, R 7 and R 8 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group, R 9 represents a hydrogen atom, a (meth)acryl group, an alkyl group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an aryl group, or an aralkyl group, and
at least a part of the compound (A) is attached to the metal particles.

12. A paste comprising the metal particle composition according to claim 1 .

13. A paste comprising the metal particle composition according to claim 2 .

14. A paste comprising the metal particle composition according to claim 3 .

15. A paste comprising the metal particle composition according to claim 4 .

16. A method for producing a metal particle composition, which is a method for producing the metal particle composition according to claim 1 , the method comprising mixing the metal particles and the compound (A).

17. The method for producing the metal particle composition according to claim 16 , the method further comprising
removing an organic solvent after mixing the metal particles, the compound (A), and the organic solvent.

18. A method for producing a metal particle composition, which is a method for producing the metal particle composition according to claim 2 , the method comprising mixing the metal particles and the compound (A).

19. A method for producing a metal particle composition, which is a method for producing the metal particle composition according to claim 3 , the method comprising mixing the metal particles and the compound (A).

20. A method for producing a metal particle composition, which is a method for producing the metal particle composition according to claim 4 , the method comprising mixing the metal particles and the compound (A).

Assignees

• Kuraray Co

Inventors

• Nishijima Yuki
• Noguchi Daiki
• Fukumoto Takashi

Classifications

• H01B1/22

  the conductive material comprising metals or alloys · CPC title

• C09D11/037

  characterised by the pigment · CPC title

• C09C3/08

  Treatment with low-molecular-weight {non-polymer} organic compounds {(C09C3/006, C09C3/048 take precedence)} · CPC title

• C09C1/627

  Copper · CPC title

• C01P2006/40

  Electric properties · CPC title