公开(公告)号：US20200048091A1

公开(公告)日：2020-02-13

申请号：US16343574

申请日：2017-08-31

Applicant: DENKA COMPANY LIMITED

Inventor： Go TAKEDA ,  Yoshitaka TANIGUCHI ,  Takemi OGUMA

IPC: C01B21/064 ,  C08L101/00 ,  C08K3/38 ,  C08K9/04

Abstract: The present invention provides a spherical boron nitride fine powder and the other superior in filling property into resin. The present invention relates to a spherical boron nitride fine powder having the following characteristics (A) to (C): (A) the spherical boron nitride fine particles have any one or more of Si, Ti, Zr, Ce, Al, Mg, Ge, Ga, and V in an amount of 0.1 atm % or more and 3.0 atm % or less in its composition on the surface of 10 nm; (B) the spherical boron nitride fine powder has an average particle diameter of 0.05 μm or more and 1 μm or less; and (C) the spherical boron nitride fine powder has an average circularity of 0.8 or more.