Dic Corporation

Yasuyo Yoshimoto

Hiroshi Kinoshita

Kunihiro Morinaga

Masamichi Hayashi

Kazuo Itoya

Jian-Jun Yuan

Hironobu Oki

Daisuke Ito

Masaki Iida

Atsushi Oshio

A spinel compound oxide particle includes metallic atoms, aluminum atoms, oxygen atoms, and molybdenum atoms, wherein the metallic atoms are selected from the group consisting of zinc atoms, cobalt atoms, and strontium atoms, and a crystallite size in a [111] plane is 100 nm or more. Included are a step (1) of firing a first mixture including a molybdenum compound and a metallic-atom-containing compound or a first mixture including a molybdenum compound, a metallic-atom-containing compound, and an aluminum compound to prepare an intermediate; and a step (2) of firing, at a temperature higher than a temperature selected in the step (1), a second mixture including the intermediate or a second mixture including the intermediate and an aluminum compound.

Spinel compound oxide particle, method for producing the same, resin composition including spinel compound oxide particle, and molded article

The present invention provides an epoxy compound which is 2,2',7,7&#x2032;-tetraglycidyloxy-1,1&#x2032;-binaphthalene. Also, the present invention provides a method for producing [1,1&#x2032;-binaphthalene]-2,2&#x2032;,7,7&#x2032;-tetraol, the method including a step of bringing a crude product produced by dimerization reaction of naphthalene-2,7-diol or a naphthalene-2,7-diol derivative into contact with an aromatic solvent; a step of separating [1,1&#x2032;-binaphthalene]-2,2&#x2032;,7,7&#x2032;-tetraol dissolved in the aromatic solvent from insoluble substances; and a step of removing the solvent from a solution of [1,1&#x2032;-binaphthalene]-2,2&#x2032;,7,7&#x2032;-tetraol. The present invention also provides a method for producing an epoxy compound, the method including reacting [1,1&#x2032;-binaphthalene]-2,2&#x2032;,7,7&#x2032;-tetraol or [1,1&#x2032;-binaphthalene]-2,2&#x2032;,7,7&#x2032;-tetraol monohydrate with epihalohydrin.

Epoxy compound, method for producing the same, epoxy resin composition, and cured product thereof

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

Disclosed is a method for producing a biphenyl-skeleton-containing epoxy resin represented by Formula (1) described below including a step of allowing polyvalent hydroxy biphenyl obtained by a production step including a regioselective cross-coupling reaction to react with epihalohydrin. (In the formula, k1 and l1 each represent an integer of 0 to 4, m and n each represent an integer of 1 to 5, Rand Reach independently represent a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent group, and Rand Rmay be identical to each other or different from each other. (Provided that left and right phenyl structures of a biphenyl skeleton are different from each other.)

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Sakura, Japan

Yasuyo Yoshimoto