SURFACE-TREATED SILICA POWDER, RESIN COMPOSITION, AND DISPERSION

Abstract: an aspect of the present invention provides surface-treated silica powder which is excellent in thickening property over time when used as a resin filler for a semiconductor sealant or the like. the surface-treated silica powder according to an embodiment of the present invention is surface-treated silica powder obtained by subjecting silica particles to surface treatment with use of a silica coupling agent. in the surface treated silica powder, a ratio (c/t) of an amount c of a silane coupling agent component chemically bonded to surfaces of the silica particles and an amount t of a silane coupling agent component present on the surface-treated silica powder is 0.7 or less.

Inventor(s): Satoshi WATANABE, Keiji SAIKI

CPC Classification: C01B33/18 (Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof (preparation of aerogels by dehydrating gels ; treatment to enhance the pigmenting or filling properties ))

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