Title:
DIELECTRIC RESIN COMPOSITION FOR FILM CAPACITORS, AND FILM CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2013/057987
Kind Code:
A1
Abstract:
Provided is a dielectric resin composition for film capacitors that have high withstand voltage, high heat resistance and low dielectric loss.
This dielectric resin composition for film capacitors is a mixture which contains an organic material (A) and an organic material (B). The organic material (A) is configured of at least two organic material components (A1, A2) which respectively have a reactive group (for example, OH or NCO) crosslinkable with each other. The organic material (B) does not have a reactive moiety that is reactive with the organic material (A) and has a dielectric loss (tanδ) at 125˚C of 0.3% or less. It is preferable that both of the organic material (A) and the organic material (B) have an aromatic ring (R). The glass transition temperature of the mixture is 130˚C or more, and preferably 280˚C or less. This dielectric resin composition is capable of increasing heat resistance and dielectric breakdown strength, and is also capable of decreasing dielectric loss.
Inventors:
ICHIKAWA TOMOMICHI (JP)
YOSHIKAWA NORIHIRO (JP)
NAKAMURA ICHIRO (JP)
KOBAYASHI SHINICHI (JP)
NAKASO ICHIRO (JP)
HIOKI YASUNORI (JP)
INAKURA TOMOKI (JP)
YOSHIKAWA NORIHIRO (JP)
NAKAMURA ICHIRO (JP)
KOBAYASHI SHINICHI (JP)
NAKASO ICHIRO (JP)
HIOKI YASUNORI (JP)
INAKURA TOMOKI (JP)
Application Number:
PCT/JP2012/068031
Publication Date:
April 25, 2013
Filing Date:
July 16, 2012
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
ICHIKAWA TOMOMICHI (JP)
YOSHIKAWA NORIHIRO (JP)
NAKAMURA ICHIRO (JP)
KOBAYASHI SHINICHI (JP)
NAKASO ICHIRO (JP)
HIOKI YASUNORI (JP)
INAKURA TOMOKI (JP)
ICHIKAWA TOMOMICHI (JP)
YOSHIKAWA NORIHIRO (JP)
NAKAMURA ICHIRO (JP)
KOBAYASHI SHINICHI (JP)
NAKASO ICHIRO (JP)
HIOKI YASUNORI (JP)
INAKURA TOMOKI (JP)
International Classes:
H01G4/18; C08L29/14; C08L67/03; C08L69/00; C08L71/12; C08L81/06
Domestic Patent References:
| WO2010114087A1 | 2010-10-07 | |||
| WO2010101170A1 | 2010-09-10 | |||
| WO2010101170A1 | 2010-09-10 |
Foreign References:
| JP2008229849A | 2008-10-02 | |||
| JP2010192787A | 2010-09-02 | |||
| JP2003160718A | 2003-06-06 | |||
| JPH10119127A | 1998-05-12 | |||
| JP2010087507A | 2010-04-15 |
Other References:
See also references of EP 2770516A4
Attorney, Agent or Firm:
KOSHIBA, MASAAKI (JP)
Masaaki Koshiba (JP)
Masaaki Koshiba (JP)
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Claims: