Insulated ultrafine powder, method for producing same, and high dielectric constant resin composite material

Patent metadata

Field	Value
Publication number	US-9394447-B2
Application number	US-201414176890-A
Country	US
Kind code	B2
Filing date	Feb 10, 2014
Priority date	Jul 28, 2009
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

Provided are an insulated ultrafine powder obtained by adding liquid metal alkoxide to a methanol-containing organic solvent in which a conductive ultrafine powder comprising a carbon material is dispersed and further adding water thereto and a method for producing the same. Also, provided are an insulated ultrafine powder obtained by adding liquid metal alkoxide to a methanol-containing organic solvent in which a conductive ultrafine powder comprising a carbon material is dispersed, further adding a coupling agent having an alkoxide group and then adding water thereto and a method for producing the same. Further, provided is a high dielectric constant resin composite material obtained by blending the insulated ultrafine powder of the present invention with a resin in a volume ratio (insulated ultrafine powder/resin) falling in a range of 5/95 to 50/50.

First claim

What claimed is:

1. A method for producing an insulated ultrafine powder, comprising:
adding a liquid metal alkoxide to a methanol-containing organic solvent, which has a conductive ultrafine powder comprising a carbon material dispersed therein, and further
adding water thereto,
separating a resulting solid material,
and drying the solid material to obtain the insulated ultrafine powder.

2. A method for producing an insulated ultrafine powder, comprising:
adding a liquid metal alkoxide to a methanol-containing organic solvent, which has a conductive ultrafine powder comprising a carbon material is dispersed therein;
further adding thereto a coupling agent having an alkoxide group; and
then adding water thereto,
separating a resulting solid material,
and drying the solid material to obtain the insulated ultrafine powder.

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• Matsumoto Takahiro
• Tsuruya Hirotaka
• Ban Hajime
• Akita Reiki

Classifications

• Y10T428/2982

  Particulate matter [e.g., sphere, flake, etc.] · CPC title

• H05K2201/0239

  Coupling agent for particles · CPC title

• H05K2201/0323

  Carbon · CPC title

• C08K9/04

  Ingredients treated with organic substances {(treated with macromolecular compounds C08K9/08)} · CPC title

• H01B3/004

  with conductive additives or conductive layers · CPC title