公开(公告)号：US20220213371A1

公开(公告)日：2022-07-07

申请号：US17695318

申请日：2022-03-15

Applicant: FUJIFILM Corporation

Inventor： Takuya KITAMURA ,  Hirotaka KITAGAWA

IPC: C09K5/14 ,  C08K3/38 ,  C08G59/62 ,  C08G59/24 ,  C08G59/32 ,  C08J5/18 ,  H01L23/373

Abstract: An object of the present invention is to provide a composition for forming a thermally conductive material, from which a thermally conductive material having excellent thermally conductive properties and adhesiveness can be obtained. In addition, another object of the present invention is to provide a thermally conductive material, a thermally conductive sheet, and a device with a thermally conductive layer. A composition for forming a thermally conductive material of the present invention contains a thermosetting compound A, boron nitride particles B containing boron nitride and having an average particle diameter of 25.0 μm or more, and boron nitride particles C containing boron nitride and having an average particle diameter of 15.0 μm or less, in which an oxygen atom concentration on a surface of the boron nitride particles C detected by X-ray photoelectron spectroscopic analysis is 1.5 atomic % or more.

公开(公告)号：US20220332921A1

公开(公告)日：2022-10-20

申请号：US17848893

申请日：2022-06-24

Applicant: FUJIFILM Corporation

Inventor： Aki NAKAMICHI ,  Takuya KITAMURA ,  Kengo SAITO ,  Daigo MURAI

IPC: C08K3/38 ,  C01B21/064

Abstract: The present invention provides boron nitride particles that can be used for preparation of a thermally conductive material having excellent thermally conductive properties and peel strength. In addition, the present invention provides a composition for forming a thermally conductive material, a thermally conductive material, a thermally conductive sheet, and a device with a thermally conductive layer, in relation to the boron nitride particles. In the boron nitride particles of the present invention, an atomic concentration ratio of oxygen atomic concentration to boron atomic concentration on a surface, detected by X-ray photoelectron spectroscopy, is 0.12 or greater, and a D value obtained by Equation (1) is 0.010 or less. D value=B(OH)3(002)/BN(002)  Equation (1) B(OH)3(002): Peak strength derived from a (002) plane of boron hydroxide having a triclinic space group measured by X-ray diffraction BN(002): Peak strength derived from the (002) plane of boron nitride having a hexagonal space group measured by X-ray diffraction.