Magnesium oxide powder and resin composition which uses same
AssigneeDenka Company Limited
InventorsToshihiko TSUNEYOSHI, Motoharu FUKAZAWA, Takuto OKABE
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Abstract
Provided are a magnesium oxide powder that has excellent moisture resistance and is capable of achieving a low dielectric loss tangent also applicable to high-frequency-band devices, and a resin composition using the same. A magnesium oxide powder (I) includes a coated particle (X) in which a surface of a core particle (A) including magnesium oxide is coated with a coating layer (B) including MgAl2O4. The ratio of MgAl2O4 to the total mass of the magnesium oxide powder (I) is less than 13% by mass and a BET specific surface area (Si) of the magnesium oxide powder (I) is less than 2.3 m2/g.
Claims15
A magnesium oxide powder (I) comprising a coated particle (X) in which a surface of a core particle (A) comprising magnesium oxide is coated with a coating layer (B) comprising MgAl2O4,
- wherein the ratio of MgAl2O4 to the total mass of the magnesium oxide powder (I) is less than 13% by mass, and
- a BET specific surface area (Si) of the magnesium oxide powder (I) is less than 2.3 m2/g.
Dependencies are inferred from the claim text.