公开(公告)号：US20220055951A1

公开(公告)日：2022-02-24

申请号：US17415267

申请日：2019-12-05

Applicant: FUJIMI INCORPORATED

Inventor： Souma Taguchi ,  Keigo KAMOSHIDA ,  Tomoaki NAKAMURA ,  Naoya MIWA ,  Keiji ASHITAKA

IPC: C04B35/565 ,  C04B35/628

Abstract: The present invention provides means capable of satisfactorily exhibit the properties inherent in the inorganic particle and the constituent material of the coating layer, such as obtaining high dispersibility and high mechanical properties in the coated particle that contains the inorganic particle having at least the inorganic substance capable of forming an inorganic oxide on a surface, and the coating layer with which the inorganic particle is coated. The present invention relates to a coated particle that contains an inorganic particle having at least an inorganic substance capable of forming an inorganic oxide on a surface, and a coating layer with which the inorganic particle is coated, in which the amount of the inorganic oxide per unit surface area of the inorganic particle does not exceed 0.150 mg/m2.

公开(公告)号：US10941318B2

公开(公告)日：2021-03-09

申请号：US16338002

申请日：2017-09-05

Applicant: FUJIMI INCORPORATED

Inventor： Souma Taguchi ,  Keiji Ashitaka ,  Naoya Miwa

IPC: C09G1/02 ,  C01B33/146 ,  C09K3/14 ,  H01L21/304 ,  B24B37/00 ,  H01L21/321 ,  H01L21/306 ,  H01L21/3105 ,  B24B37/04

Abstract: To provide a means capable of suppressing the generation of gelation at the time of or after the addition of a silane coupling agent in the production of a cationically modified silica including modifying a silica raw material with a silane coupling agent. The present invention is a method for producing a cationically modified silica, including: mixing a silica raw material having a negative zeta potential with a silane coupling agent having an amino group or a quaternary cationic group; and reacting the silica raw material with the silane coupling agent to obtain a cationically modified silica, in which the cationically modified silica satisfies the following relational expression (1): X

公开(公告)号：US10913857B2

公开(公告)日：2021-02-09

申请号：US16465790

申请日：2018-09-28

Applicant: FUJIMI INCORPORATED

Inventor： Shogo Tsubota ,  Souma Taguchi ,  Keiji Ashitaka ,  Naoya Miwa

IPC: C09C1/30 ,  C01B32/956

Abstract: According to the present invention, there is provided a means for producing an aluminum hydroxide-coated SiC particle powder having a coating layer containing aluminum hydroxide on a surface of SiC particles. The present invention relates to a method for producing an aluminum hydroxide-coated SiC particle powder, which includes a coating step of maintaining a pH of a dispersion containing SiC particles, sodium aluminate, and water in a range of from 9 to 12 and forming coated particles having a coating layer containing aluminum hydroxide on a surface of the SiC particles.

公开(公告)号：US11760697B2

公开(公告)日：2023-09-19

申请号：US17042404

申请日：2019-03-26

Applicant: FUJIMI INCORPORATED

Inventor： Keigo Kamoshida ,  Souma Taguchi ,  Keiji Ashitaka ,  Naoya Miwa

IPC: C04B35/80 ,  C04B35/626 ,  C04B35/628 ,  C04B35/634 ,  C04B35/64 ,  B28B19/00

CPC classification number: C04B35/80 ,  C04B35/6264 ,  C04B35/62802 ,  C04B35/62813 ,  C04B35/6342 ,  C04B35/63416 ,  C04B35/64 ,  B28B19/0046 ,  C04B2235/386 ,  C04B2235/3826 ,  C04B2235/5244 ,  C04B2235/5256 ,  C04B2235/5436 ,  C04B2235/616

Abstract: Provided are a dispersion for a silicon carbide sintered body having a small environmental load, high dispersibility, and excellent temporal stability, and a manufacturing method thereof.
The dispersion is a dispersion for a silicon carbide sintered body, containing: silicon carbide particles; boron nitride particles; a resin having a hydroxyl group; and water, wherein the dispersion has a pH at 25° C. of less than or equal to 7.0, and the silicon carbide particles and the boron nitride particles have charges of the same sign. The dispersion is manufactured by a manufacturing method of a dispersion for a silicon carbide sintered body, including a mixing step of mixing a water dispersion containing silicon carbide particles, a water dispersion containing boron nitride particles, and an aqueous solution containing a resin having a hydroxyl group.

公开(公告)号：US11167995B2

公开(公告)日：2021-11-09

申请号：US16089945

申请日：2017-03-29

Applicant: FUJIMI INCORPORATED

Inventor： Souma Taguchi ,  Keiji Ashitaka ,  Naoya Miwa

IPC: C08K3/36 ,  C01B33/146 ,  C09K3/14 ,  C09G1/02 ,  C09D7/62 ,  C07F7/08

Abstract: Provided is a means capable of introducing a sufficient amount of a cationic group onto the surface of silica particles even in a case where a silica raw material having a high silica concentration is used while occurrence of gelation is suppressed at the time of or after addition of a silane coupling agent in production of a cationically modified silica dispersion including modifying raw silica using a silane coupling agent.
Adding a silane coupling agent having a cationic group to a silica raw material in which a zeta potential shows a negative value, and causing the silica raw material to react with the silane coupling agent to obtain a cationically modified silica.