Title:
BORON-NITRIDE POWDER AND RESIN COMPOSITION CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2014/136959
Kind Code:
A1
Abstract:
Provided is a boron-nitride powder that is suitable for use in a resin composition for transmitting heat from a heat-producing electronic component such as a power device to a heat-dissipating member. In particular, said boron-nitride powder is useful in a resin composition for a thermal interface material or insulating layer for a printed circuit board. Furthermore, this boron-nitride powder reduces thermal-conductivity anisotropy and thermal contact resistance, resulting in high thermal conductivity. This boron-nitride powder contains boron-nitride particles each consisting of hexagonal boron-nitride primary particles joined together. The boron-nitride powder, which is an aggregate of said boron-nitride particles, exhibits a mean sphericity of at least 0.70, a mean particle diameter of 20-100 µm, a porosity of 50-80%, a mean pore diameter of 0.10-2.0 µm, a maximum pore diameter of at most 10 µm, and a calcium content of 500-5,000 ppm. Under X-ray powder diffraction, the graphitization index of the boron-nitride powder is preferably between 1.6 and 4.0, inclusive, and the peak intensity ratio (I(002)/I(100)) between the (002) plane and the (100) plane is preferably at most 9.0.
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Inventors:
NISHI TAIKI (JP)
IGARASHI ATSUKI (JP)
MITSUNAGA TOSHIKATSU (JP)
IGARASHI ATSUKI (JP)
MITSUNAGA TOSHIKATSU (JP)
Application Number:
PCT/JP2014/056034
Publication Date:
September 12, 2014
Filing Date:
March 07, 2014
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KK (JP)
International Classes:
C01B21/064; C08K3/28; C08K3/38; C08L101/00
Domestic Patent References:
| WO2011043082A1 | 2011-04-14 | |||
| WO2011021366A1 | 2011-02-24 | |||
| WO2012070289A1 | 2012-05-31 |
Foreign References:
| JP2014040341A | 2014-03-06 | |||
| JP2000154265A | 2000-06-06 | |||
| JPH09202663A | 1997-08-05 | |||
| JP2011098882A | 2011-05-19 | |||
| JP2001122615A | 2001-05-08 | |||
| JP2010157563A | 2010-07-15 | |||
| JP2012171842A | 2012-09-10 |
Other References:
See also references of EP 2966036A4
R.F. HILL; P.H. SUPANCIC, J. AM. CERAM. SOC., vol. 85, 2002, pages 851
J. THOMAS, J. AM. CHEM. SOC., vol. 84, 1962, pages 4619
TANAKA, PHYSICS RESEARCH, vol. 85, no. 4, 2006, pages 499 - 518
R.F. HILL; P.H. SUPANCIC, J. AM. CERAM. SOC., vol. 85, 2002, pages 851
J. THOMAS, J. AM. CHEM. SOC., vol. 84, 1962, pages 4619
TANAKA, PHYSICS RESEARCH, vol. 85, no. 4, 2006, pages 499 - 518
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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