Title:
FERRITE POWDER, RESIN COMPOSITION, AND MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2017/170427
Kind Code:
A1
Abstract:
This ferrite powder can be detected by a metal detector, wherein the ferrite powder is characterized by including hard ferrite particles containing 7.8-9.0% by mass of Sr and 61.0-65.0% by mass of Fe, the Na content measured by ion chromatography being 1-200 ppm. The volume-average grain size of the constituent particles of the ferrite powder is preferably 0.1-100 μm. The residual magnetization by VSM measurement when a magnetic field of 10 K ∙ 1000/4 πA/m is applied is preferably from 25 A ∙ m2/kg to 40 A ∙ m2/kg.
Inventors:
AGA KOJI (JP)
IGARASHI TETSUYA (JP)
IGARASHI TETSUYA (JP)
Application Number:
PCT/JP2017/012438
Publication Date:
October 05, 2017
Filing Date:
March 27, 2017
Export Citation:
Assignee:
POWDERTECH CO LTD (JP)
International Classes:
C01G49/00; C08K3/22; C08L101/00; H01F1/113
Domestic Patent References:
| WO2016117648A1 | 2016-07-28 |
Foreign References:
| JPS55145303A | 1980-11-12 | |||
| JPH0820066A | 1996-01-23 | |||
| JP2002260913A | 2002-09-13 |
Other References:
G. R. GORDANI ET AL.: "Enhanced magnetic properties of substituted Sr-hexaferrite nanoparticles synthesized by co-precipitation method", CERAMICS INTERNATIONAL, vol. 40, no. 3, April 2014 (2014-04-01), pages 4945 - 4952, XP055467345, ISSN: 0272-8842
See also references of EP 3438055A4
See also references of EP 3438055A4
Attorney, Agent or Firm:
MASUDA, Tatsuya et al. (JP)
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