HEXAGONAL BORON NITRIDE POWDER, PRODUCTION METHOD THEREFOR, RESIN COMPOSITION AND RESIN SHEET

Title:

HEXAGONAL BORON NITRIDE POWDER, PRODUCTION METHOD THEREFOR, RESIN COMPOSITION AND RESIN SHEET

Document Type and Number:

WIPO Patent Application WO/2017/145869

Kind Code:

A1

Abstract:

The present invention provides a hexagonal boron nitride powder in which orientational anisotropy in a resin composition or a resin sheet is suppressed more than for a conventional hexagonal boron nitride powder and which has excellent thermal conductivity, a production method therefor, a resin composition and a resin sheet including the hexagonal boron nitride powder. In the hexagonal boron nitride powder, a content of primary particles having an average long diameter (L) of 10 µm or less, an average thickness (D) of 0.20 µm or more, a ratio (L/D) of the average long diameter (L) to the average thickness (D) of 3.0 or more to 5.0 or less, and a ratio (l/d) of a long diameter (l) to a thickness (d) of 3.0 or more to 5.0 or less, is 25% or more.

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Inventors:

OTSUKA YUKI (JP)
FUKASAWA MASARU (JP)

Application Number:

PCT/JP2017/005332

Publication Date:

August 31, 2017

Filing Date:

February 14, 2017

Export Citation:

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Assignee:

SHOWA DENKO KK (JP)

International Classes:

C01B21/064; C08K3/38; C08L101/00

Domestic Patent References:

WO2015122378A1	2015-08-20
WO2016092951A1	2016-06-16
WO2016092952A1	2016-06-16

Foreign References:

JP2011098882A	2011-05-19
JP2015212217A	2015-11-26
JP2007308360A	2007-11-29
JP2004035273A	2004-02-05

Other References: