Dic Corporation

Atsushi Oshio

Hiroshi Kinoshita

Daisuke Ito

Kunihiro Morinaga

Kazuo Itoya

Jian-Jun Yuan

Junji Yamaguchi

Hironobu Oki

Masamichi Hayashi

Yasuyo Yoshimoto

Takayuki Kanematsu

Fumihiko Maekawa

Masaki Iida

Yasuyo Sakamoto

Provided is a surface-treated spinel particle (B) including a spinel particle (A) including a magnesium atom, an aluminum atom, and an oxygen atom and a surface treatment layer disposed at least a portion of the surface of the spinel particle (A). The surface treatment layer includes a surface-treating agent including an organic compound or a cured product of the surface-treating agent. The spinel particle (A) further includes molybdenum. The crystallite diameter of the [111] plane of the spinel particle (A) is 220 nm or more. Also provided are a method for producing the surface-treated spinel particle (B), a resin composition including the surface-treated spinel particle (B), and a molded article.

Surface-treated spinel particles, method for producing the same, resin composition, and molded article

The present invention provides an epoxy resin composition including 2,2',7,7&#x2032;-tetraglycidyloxy-1,1&#x2032;-binaphthalene as an epoxy resin (A), and a filler (B). Further, the present invention provides an epoxy resin composition in which the filler (B) in the epoxy resin composition is a thermally conductive filler and an epoxy resin composition in which the filler (B) is silica. Further, the present invention provides a cured product produced by curing the epoxy resin composition of the present invention and a heat dissipation material and an electronic material each including the cured product.

Epoxy resin composition, cured product, heat radiating material, and electronic member

Provided is an optical disc in which at least a light reflecting layer and a light transmitting layer that includes a cured film of an ultraviolet curable composition are stacked on a substrate, and information is reproduced by making a blue laser beam be incident on the optical disc from a side of the light transmitting layer, wherein an elastic modulus (25&#xb0; C.) measured by indenting a Vickers indenter having a vertex angle of 136&#xb0; under a load of 100 mN into a surface of the cured film of the ultraviolet curable composition is 1,500 MPa or less; and a loss modulus (E&#x2033;) at 60&#xb0; C. in a dynamic viscoelastic spectrum of the cured film measured at a frequency of 3.5 Hz is 10 MPa or less. Thus, warpage is reduced during curing and plastic deformation is less likely even under a load for a long period of time.

Optical disc

Growing community of inventors

Sakura, Japan

Atsushi Oshio