Electrodeposition solution and method for producing conductor with insulating film using same

Patent metadata

Field	Value
Publication number	US-11286576-B2
Application number	US-201816464847-A
Country	US
Kind code	B2
Filing date	Feb 13, 2018
Priority date	Feb 16, 2017
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

An electrodeposition dispersion of the present invention is formed of a dispersion medium and a solid content. The solid content includes polyimide-based resin particles and fluorine resin particles. Also, a content ratio of the fluorine resin particles in the solid content is 20 to 70% by mass. In addition, a median diameter of the polyimide-based resin particles is 50 to 400 nm.

First claim

The invention claimed is:

1. An electrodeposition dispersion comprising:
a dispersion medium; and
a solid content,
wherein the solid content includes polyamide imide resin particles and fluorine resin particles,
a content ratio of the fluorine resin particles in the solid content is 20 to 70% by mass,
a median diameter of the polyamide imide resin particles is 50 to 400 nm,
the dispersion medium consists of a polar solvent, water, and a base,
a content ratio of the water in the dispersion medium is 15 to 40% by mass,
a content ratio of the polar solvent in the dispersion medium is 60 to 70% by mass,
a content ratio of the base in the dispersion medium is 0.1 to 0.3% by mass, and
a content ratio of the solid content in the electrodeposition dispersion is 1 to 10% by mass.

2. The electrodeposition dispersion according to claim 1 ,
wherein the polar solvent has a boiling point higher than the water.

3. The electrodeposition dispersion according to claim 1 ,
wherein the polyamide imide resin particles have a median diameter smaller than the fluorine resin particles.

4. A method for producing a conductor with an insulating film which forms an insulating film by electrodeposition on a surface of a conductor using the electrodeposition dispersion according to claim 1 .

5. The method for producing a conductor with an insulating film according to claim 4 , wherein the conductor is a metal wire.

6. The electrodeposition dispersion according to claim 2 ,
wherein the polyamide imide resin particles have a median diameter smaller than the fluorine resin particles.

7. A method for producing a conductor with an insulating film which forms an insulating film by electrodeposition on a surface of a conductor using the electrodeposition dispersion according to claim 2 .

8. A method for producing a conductor with an insulating film which forms an insulating film by electrodeposition on a surface of a conductor using the electrodeposition dispersion according to claim 3 .

9. A method for producing a conductor with an insulating film which forms an insulating film by electrodeposition on a surface of a conductor using the electrodeposition dispersion according to claim 6 .

10. The method for producing a conductor with an insulating film according to claim 7 , wherein the conductor is a metal wire.

11. The method for producing a conductor with an insulating film according to claim 8 , wherein the conductor is a metal wire.

12. The method for producing a conductor with an insulating film according to claim 9 , wherein the conductor is a metal wire.

Assignees

• Mitsubishi Materials Corp

Inventors

• Iida Shintaro
• Sakurai Hideaki

Classifications

• C09D5/44 Primary

  for electrophoretic applications (processes for coating by electrophoresis C25D13/00) · CPC title

• C08L27/18

  Homopolymers or copolymers or tetrafluoroethene · CPC title

• C25D13/08 Primary

  by polymerisation in situ of monomeric materials {(not used, see C09D5/4476)} · CPC title

• C25D13/16

  Wires; Strips; Foils · CPC title

• C08L79/08

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title