公开(公告)号：US20240327644A1

公开(公告)日：2024-10-03

申请号：US18743283

申请日：2024-06-14

Applicant: ADMATECHS CO., LTD.

Inventor： Kohei OGATA ,  Yusuke WATANABE ,  Nobutaka TOMITA

IPC: C09C1/30 ,  C08K9/06 ,  C09C3/04 ,  C09C3/12

CPC classification number: C09C1/3081 ,  C08K9/06 ,  C09C3/043 ,  C09C3/12 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/82

Abstract: A filler for electronic material according to the present invention has a silica particle material produced by a dry method, wherein D50 is 0.2 μm or greater and 7.0 μm or less. Further, in the filler for electronic material according to the present invention, (BET specific surface area)/(theoretical specific surface area calculated from D50) is 0.85 or greater and 1.2 or less (requirement 1), and/or D10/D50 is 0.55 or greater and 0.75 or less (requirement 2). When at least one of the requirements 1 and 2 is satisfied, electric characteristics such as a Df value are improved. Here, the BET specific surface area is a value measured by using nitrogen, and D50 is a 50 mass % cumulative diameter, i.e., a median diameter, and means a particle diameter at 50 mass % when the masses of particles are sequentially integrated from smaller particle diameters. Similarly, D10 is a 10 mass % cumulative diameter.

公开(公告)号：US20230352435A1

公开(公告)日：2023-11-02

申请号：US18206789

申请日：2023-06-07

Applicant: ADMATECHS CO., LTD.

Inventor： Shinta HAGIMOTO ,  Nobutaka TOMITA ,  Susumu ABE

IPC: H01L23/00

CPC classification number: H01L24/27 ,  H01L24/29 ,  H01L2224/2711 ,  H01L2224/2919

Abstract: Provided is a method for producing an electronic material filler having excellent performance. The method includes a burning step of putting a particle raw material in flame obtained by burning combustible carbon-free gas containing no carbon to form a particle material to be contained in the electronic material filler. By adopting, as combustible gas, combustible gas containing no carbon, conductive particles formed of carbon are not generated in principle. Therefore, a step of removing the conductive particles formed of carbon by sieving or the like is not required. Particularly, carbon derived from hydrocarbon gas is adhered to and formed on, for example, the surface of the particle material or is formed in the particle material. Therefore, the carbon may not be completely removed by sieving or the like. However, the production method of the present invention prevents the carbon from being mixed in principle.

公开(公告)号：US11613625B2

公开(公告)日：2023-03-28

申请号：US16921334

申请日：2020-07-06

Applicant: ADMATECHS CO., LTD.

Inventor： Shinta Hagimoto ,  Nobutaka Tomita ,  Osamu Nakano

IPC: C08K9/06 ,  C08K3/34 ,  C08K7/18 ,  C09C1/40 ,  C09C3/12

Abstract: A filler for resinous composition is contained and used in resinous composition, and includes: a crystalline siliceous particulate material with a crystal structure made of at least one member selected from the group consisting of type FAU, type FER, type LTA and type MFI, and/or type MWW; and a surface treatment agent including an organic silica compound reacted with or adhered to a surface of the crystalline siliceous particulate material; the filler including the surface treatment agent in an amount falling in a range allowing the filler to exhibit a negative thermal expansion coefficient.

公开(公告)号：US20210261823A1

公开(公告)日：2021-08-26

申请号：US17318025

申请日：2021-05-12

Applicant: ADMATECHS CO., LTD.

Inventor： Yusuke TOMIOKA

IPC: C09G1/02 ,  C09K3/14

Abstract: To provide a multi-core ferrule polishing material suitable for polishing a multi-core ferrule. A multi-core ferrule polishing material of the present invention addressing the above problem includes a binder formed from a resin material, and abrasive grains dispersed in the binder. The abrasive grains are contained in an amount of not less than 88.5% with respect to a sum of masses of the abrasive grains and the binder, include particles having a particle diameter of not greater than 100 nm, the particles being present in an amount of not less than 70% and less than 100% with respect to the mass of the abrasive grains, and are formed from silica.

公开(公告)号：US10851246B2

公开(公告)日：2020-12-01

申请号：US16715204

申请日：2019-12-16

Applicant: ADMATECHS CO., LTD.

Inventor： Yusuke Watanabe ,  Nobutaka Tomita ,  Yoshiaki Kato

IPC: C09C3/12 ,  C01B33/18 ,  C08J3/205 ,  C08K9/06 ,  C08J3/20

Abstract: A production method for an electronic material filler includes: a preparation step of preparing a silica particle material produced by a dry method; and a first surface treatment step of performing surface treatment on the silica particle material with a silane compound having a vinyl group, a phenyl group, a phenylamino group, an alkyl group having four or more carbon atoms, a methacryl group, or an epoxy group, to obtain a first surface treatment-processed particle material. After the silica particle material is produced by the dry method, the silica particle material is not brought into contact with liquid water, and has a particle diameter of 100 nm to 600 nm or a specific surface area of 5 m2/g to 35 m2/g.

公开(公告)号：US20200231507A1

公开(公告)日：2020-07-23

申请号：US16822176

申请日：2020-03-18

Applicant: ADMATECHS CO., LTD.

Inventor： Kimitoshi SATO ,  Yusuke WATANABE ,  Nobutaka TOMITA ,  Akihiko SUDA ,  Tatsuo FUKANO

IPC: C04B35/56 ,  H01M4/1393 ,  H01M4/583 ,  C04B35/626

Abstract: A particulate material with a composition expressed by MaAlbXc in which “M” includes one or more elements selected from the group consisting of Ti, V, Cr, Zr, Nb, Mo, Hf and Ta and “X” includes C or one or more chemical structures selected from the group consisting of C(1.0−x)Nx (where “x” is 0

公开(公告)号：US12187903B2

公开(公告)日：2025-01-07

申请号：US17953430

申请日：2022-09-27

Applicant: ADMATECHS CO., LTD.

Inventor： Kenta Takei ,  Yusuke Watanabe ,  Nobutaka Tomita

IPC: C09C3/12 ,  C09C1/30 ,  C09D7/62 ,  C09D17/00

Abstract: A particle material that has high dispersibility in a dispersion medium such as toluene having high hydrophobicity, and a slurry composition in which the particle material is used, are provided for solving the problem. A surface-modified particle material of the present invention includes: a particle material formed of an inorganic material; and a surface treatment agent formed of a silane compound having a first functional group that has any of C, N, and O atoms away over five or more atoms from Si to which an alkoxide is bound, the surface treatment agent allowing surface treatment of the particle material in such an amount that a degree of hydrophobicity becomes not less than 30%. Dispersibility is enhanced also in a dispersion medium having high hydrophobicity in a case where a functional group having a predetermined structure is introduced so as to impart predetermined or higher hydrophobicity.

公开(公告)号：US20240392110A1

公开(公告)日：2024-11-28

申请号：US18790034

申请日：2024-07-31

Applicant: ADMATECHS CO., LTD.

Inventor： Keisuke KURITA ,  Nobutaka TOMITA ,  Yuki ARAI

IPC: C08K9/06 ,  C01G39/00 ,  C09C1/00 ,  C09C3/12

Abstract: An object of the present invention is to provide a composite oxide particle material formed of zinc molybdate having a high purity and a high circularity. The composite oxide particle material is formed of a composite oxide, of molybdenum and zinc, having an average particle diameter of 0.1 μm or more and 5.0 μm or less, a BET specific surface area of 1 m2/g or more and 20 m2/g or less, (peak intensity at 26.6° according to XRD)/(peak intensity at 24.2°) of 1.20 or more, an impurity concentration of 1 mass % or less, and a circularity of 0.90 or more. XRD is measured with CuKα radiation.

公开(公告)号：US11072735B2

公开(公告)日：2021-07-27

申请号：US16777096

申请日：2020-01-30

Applicant: ADMATECHS CO., LTD.

Inventor： Shingi Noguchi ,  Masaru Kuraki ,  Tempo Nakamura

IPC: C09K5/14 ,  C01F7/02 ,  C08K3/22 ,  C08K7/18

Abstract: A particulate material is mainly composed of alumina, has a volume average particle diameter of from 70 to 200 μm, has a degree of sphericity of from 0.89 or more to less than 0.99, has a degree of alfa-aluminization of from 40 to 85%, and produces a result of 0.017 g or less in an abrasion test for equipment.

公开(公告)号：US11021590B2

公开(公告)日：2021-06-01

申请号：US16841423

申请日：2020-04-06

Applicant: ADMATECHS CO., LTD.

Inventor： Shingi Noguchi ,  Masaru Kuraki ,  Tempo Nakamura ,  Tomio Inoue

IPC: C09C3/12 ,  C08K9/06 ,  C08K3/22 ,  C08L83/04 ,  C09C1/40

Abstract: A silicone-coated filler comprises: a particulate material mainly composed of an inorganic oxide formed by oxidizing a predetermined element; a first silicone structure bonded to a surface of the particulate material by way of a “-‘the predetermined element’-OSi—” structure; and a second silicone structure including a cross-linking structure with a carbon-carbon structure directly bonded to a silicon atom of the first silicone structure, and a polysiloxane structure bonded to the cross-linking structure.