公开(公告)号：US20240174908A1

公开(公告)日：2024-05-30

申请号：US18283482

申请日：2022-03-22

Applicant: DENKA COMPANY LIMITED

Inventor： Yusuke SASAKI ,  Kenji MIYATA ,  Kei KUBOBUCHI ,  Tomonari MIYAZAKI

IPC: C09K5/14 ,  C01B21/064 ,  C08K3/38

CPC classification number: C09K5/14 ,  C01B21/0646 ,  C08K3/38 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/21 ,  C01P2006/32 ,  C08K2003/385 ,  C08K2201/001 ,  C08K2201/005

Abstract: A boron nitride powder that is an aggregate of boron nitride particles, wherein the boron nitride powder has a BET specific surface area of 4.6 m2/g or more, and an average pore diameter of 0.65 μm or less. A resin composition containing: the boron nitride powder, and a resin.

公开(公告)号：US20240417545A1

公开(公告)日：2024-12-19

申请号：US18701790

申请日：2022-10-07

Applicant: DENKA COMPANY LIMITED

Inventor： Takuto OKABE ,  Motoharu FUKAZAWA ,  Kei KUBOBUCHI ,  Takako EBISUZAKI

IPC: C08K9/06 ,  C09C1/30

Abstract: Provided are spherical silica particles that can achieve a lower dielectric dissipation factor when used to fill a resin, and a resin composition using the same.
Spherical silica particles (X) are those having a surface fractal dimension of 1.0-2.3. The resin composition contains the spherical silica particles (X) and at least one resin selected from a thermoplastic resin and a thermosetting resin. The specific surface area of the spherical silica particles (X) is preferably 0.1-2.0 m2/g. The average particle diameter of the spherical silica particles (X) is preferably 1-30 μm.

公开(公告)号：US20240158230A1

公开(公告)日：2024-05-16

申请号：US18283624

申请日：2022-03-22

Applicant: DENKA COMPANY LIMITED

Inventor： Yusuke SASAKI ,  Kenji MIYATA ,  Kei KUBOBUCHI ,  Takako ARAI

IPC: C01B21/064 ,  C08K3/38

CPC classification number: C01B21/064 ,  C08K3/38 ,  C01P2004/03 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/16 ,  C01P2006/21 ,  C01P2006/32 ,  C08K2003/385 ,  C08K2201/003 ,  C08K2201/006

Abstract: A method for producing a boron nitride particle, including: a step of pressurizing and heating a particle containing boron carbide under a nitrogen atmosphere to obtain a particle containing boron carbonitride; a step of putting a mixture containing a boron source containing at least one selected from the group consisting of boric acid and boron oxide and the particle containing boron carbonitride into a container; and a step of pressurizing and heating the mixture under a nitrogen atmosphere in a state where airtightness in the container has been enhanced to obtain a boron nitride particle, wherein an amount of boron atoms in the boron source is 1.0 to 2.2 mol with respect to 1 mol of the boron carbonitride in the mixture.