Title:
SPHERICAL CALCIUM TITANATE POWDER AND RESIN COMPOSITION USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/189965
Kind Code:
A1
Abstract:
Provided are: a spherical calcium titanate powder that is unlikely to cause deterioration in processability and workability even when being loaded in resin at a high level, that can be applied as a ceramic filler for a high frequency band device, and that can achieve a high dielectric constant and a low dielectric loss tangent; and a resin composition using the spherical calcium titanate powder. This spherical calcium titanate powder has an average circularity of 0.80 or more and has a shear viscosity of 3,000 Pa·s or less as measured by the following condition. The viscosity of a resin composition comprising 60 vol.% of a bisphenol A type liquid epoxy resin (epoxy equivalent of 184-194) and 40 vol.% of the spherical calcium titanate powder is measured with a rheometer at a shear rate of 0.11/s and a temperature of 25±1°C by using a sample having a thickness of 1 mm and having a plate shape that is flat and circular with a size of 10 mm⌀.
Inventors:
OKABE TAKUTO (JP)
FUKAZAWA MOTOHARU (JP)
MIZUMOTO TAKAHISA (JP)
YOSHIGAI HIROAKI (JP)
HIROTA KAZUKI (JP)
FUKAZAWA MOTOHARU (JP)
MIZUMOTO TAKAHISA (JP)
YOSHIGAI HIROAKI (JP)
HIROTA KAZUKI (JP)
Application Number:
PCT/JP2023/011301
Publication Date:
October 05, 2023
Filing Date:
March 22, 2023
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C01G23/00; C08K3/24; C08L101/00
Domestic Patent References:
| WO2010027074A1 | 2010-03-11 | |||
| WO2022124396A1 | 2022-06-16 |
Foreign References:
| JP2018194775A | 2018-12-06 | |||
| JPH10279925A | 1998-10-20 | |||
| JPH05178617A | 1993-07-20 |
Attorney, Agent or Firm:
SONODA & KOBAYASHI INTELLECTUAL PROPERTY LAW (JP)
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