Sakai Chemical Industry Co., Ltd.

Harunobu Saito

Atsuki Terabe

Masaru Mikami

Tsutomu Yamamoto

Satoshi Komori

Takumi Kawada

Mika Onai

An object of the present invention is to provide magnesium oxide particles that have a high heat conductivity and excellent properties as heat-dissipating filler, and can prevent problems such as soft errors in the memory. The magnesium oxide particles have a BET specific surface area of 0.1 to 17 m/g, and an &#x3b1; dose of 0.005 c/cm&#xb7;Hr or lower, the particles exhibiting a relation between an X-ray diffraction peak intensity y (cps) at a Bragg angle (2&#x3b8;) of 42.80&#xb0; to 43.00&#xb0; and the BET specific surface area x (m/g) as represented by the following inequality (1):960+33000&#x2003;&#x2003;(1).

Magnesium oxide particles, magnesium oxide particle production method, resin composition and molded body using such resin composition, and adhesive or grease

Disclosed are titanium dioxide-containing composite particles which can maintain whiteness of natural titanium dioxide even after calcination step, and can provide titanium dioxide-containing composite particles having excellent weather resistance. In each of the composite particles, at least one oxide layer containing silicon oxide and zirconium oxide is provided as coating components of titanium dioxide. That is, provided are composite particles including a base that contains titanium dioxide and at least one oxide layer that contains silicon oxide and zirconium oxide provided on the base, and a method of producing the composite particles.

Composite particles and method for production thereof

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Osaka, Japan

Harunobu Saito