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：US20240417544A1

公开(公告)日：2024-12-19

申请号：US18701748

申请日：2022-10-07

Applicant: DENKA COMPANY LIMITED

Inventor： Takuto OKABE ,  Motoharu FUKAZAWA ,  Tsuyoshi KANEKO ,  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. The spherical silica particles (X) are those in which the number of water molecules desorbed from the spherical silica particles (X) when the spherical silica particles (X) are heated from 50° C. to 1000° C. at a rate of temperature increase of 25° C./min. is 0.001-0.010 mmoL/g and in which the specific surface area is 0.1-2.0 m2/g. The resin composition contains the silica particles (X) and at least one resin selected from a thermoplastic resin and a thermosetting resin.

公开(公告)号：US20240343636A1

公开(公告)日：2024-10-17

申请号：US18685295

申请日：2022-06-22

Applicant: DENKA COMPANY LIMITED

Inventor： Kohei KARIYA ,  Takako EBISUZAKI ,  Motoharu FUKAZAWA

IPC: C03C12/00 ,  C03C10/00

CPC classification number: C03C12/00 ,  C03C10/0009 ,  C03C2204/00

Abstract: [Summary] One embodiment of the present invention provides a powder. The powder includes ZnO, Al2O3, and SiO2 as components. In a ternary phase diagram of the ZnO, the Al2O3, and the SiO2, the powder has a composition included in a rectangular area having as the four corners thereof (ZnO (mol %), Al2O3 (mol %), SiO2 (mol %))=(24, 13, 63), (19, 18, 63), (37, 12, 51), (32, 17, 51). The ratio (S001/S101) of the area S001 of a peak appearing in the range of 15°≤2θ≤17° and the area S101 of a peak appearing in the range of 24°≤2θ≤27° in an X-ray diffraction pattern is 0.001-0.07.

公开(公告)号：US20220105707A1

公开(公告)日：2022-04-07

申请号：US17425680

申请日：2020-01-22

Applicant: Denka Company Limited

Inventor： Ikuka INODA ,  Yusuke MASUDA ,  Shun UCHIYAMA ,  Takako EBISUZAKI

IPC: B32B15/08 ,  H05K3/02 ,  B32B15/20 ,  B32B37/06 ,  B32B37/10 ,  B32B37/08

Abstract: A method of producing a double-sided metal-clad laminate comprises a supplying step of supplying an insulating film interposed between two metal foils continuously to between a pair of endless belts, a heat and pressure applying step of forming a laminate of the insulating film and the metal foils by heating and applying a pressure to the insulating film and the metal foils under predetermined condition while the insulating film is interposed by the two metal foils in between the endless belts, and a cooling step of cooling the laminate, wherein the insulating film has a thickness of 10 to 500 μm, a degree of planar orientation of 30% or more, an average coefficient of linear expansion in an MD direction of −40 to 0 ppm/K and an average coefficient of linear expansion in a TD direction of 0 to 120 ppm/K.