Title:
電着用水性分散液、高誘電率フィルムおよび電子部品
Document Type and Number:
Japanese Patent JP4265048
Kind Code:
B2
Abstract:
It is an object of the invention to provide an aqueous dispersion for electrodeposition which has excellent shelf life and can form thin, high dielectric constant films, as well as a high dielectric constant film formed from the aqueous dispersion and electronic parts provided with the high dielectric constant film. The aqueous dispersion for electrodeposition according to the invention is characterized in that organic particles with a mean particle size of no greater than 1 mu m and a dielectric constant of at least 30 (titanium dioxide particles and the like) and organic particles composed of either or both a polymerizable compound and a polymer (polyimide-based resin and the like) are dispersed in an aqueous medium, allowing storage for a period of 7 days or longer at 20 DEG C. The high dielectric constant film of the invention obtained by electrodeposition of the aqueous dispersion for electrodeposition may have a dielectric constant of 6 or greater and a volume resistivity of 10<12> OMEGA .cm or greater. It may be used for electronic parts such as printed circuit boards, semiconductor packages, condensers and high-frequency antennas.
Inventors:
Hirofumi Goto
Nobuyuki Ito
Nobuyuki Ito
Application Number:
JP28590499A
Publication Date:
May 20, 2009
Filing Date:
October 06, 1999
Export Citation:
Assignee:
JSR CORPORATION
International Classes:
C09D5/44; C09D201/00; C09D7/12; C25D3/00; C25D15/02; H01L23/498; H01Q1/38; H05K1/16
Domestic Patent References:
| JP11049951A | ||||
| JP9012742A | ||||
| JP1248404A | ||||
| JP51114602A | ||||
| JP57128759A | ||||
| JP2000034352A |
Attorney, Agent or Firm:
Kiyoshi Kojima