Spherical forsterite particles, method for producing the same, and resin composition including spherical forsterite particles

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United States of America

PATENT NO 12129360
APP PUB NO 20220017724A1
SERIAL NO

17298086

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Abstract

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Forsterite particles have an average size of 0.1 μm to 10 μm and a dielectric loss tangent of 0.0003 to 0.0025. Sphericity=(Average particle size (μm) measured with a laser diffraction particle size distribution analyzer)/(Average primary particle size (μm) calculated by conversion using specific surface area measured by a nitrogen gas adsorption method) may be from 1.0 to 3.3. This method for producing forsterite particles may include: step (A): mixing a magnesium compound as a magnesium source and a silicon compound as a silicon source so MgO/SiO2 has a molar ratio of 1.90 to 2.10 to prepare particles; step (B): putting the particles prepared in step (A) into a hydrocarbon combustion flame to recover the resulting particles; and step (C): firing the particles obtained in step (B) at 700° C. to 1100° C. The ratio between a resin and the particles may be 1:0.001 to 1000 by mass ratio.

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Patent Owner(s)

Patent OwnerAddress
NISSAN CHEMICAL CORPORATIONTOKYO 103-6119

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hida, Masahiro Funabashi, JP 17 136
Yamada, Shuhei Funabashi, JP 107 1367

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