公开(公告)号：US20200377371A1

公开(公告)日：2020-12-03

申请号：US16498121

申请日：2018-02-01

Applicant: FUJIMI INCORPORATED

Inventor： Keiji ASHITAKA

IPC: C01B33/145

Abstract: Provided is a method for producing a silica sol. A gel-like material cannot be generated and highly associated silica particles can be obtained.A method for producing a silica sol, comprising a step of making a reaction liquid by mixing liquid (A) comprising an alkaline catalyst, water, a first organic solvent and silica particles for association with liquid (B) comprising at least one of tetramethoxysilane and a condensate thereof and a second organic solvent, wherein during the mixing, an addition rate of the liquid (B) is 8.5×10−4 to 5.6×10−3 mol/min in terms of silicon atoms with respect to 1 mol of the water contained in the liquid (A).

公开(公告)号：US20200377369A1

公开(公告)日：2020-12-03

申请号：US16498140

申请日：2018-03-20

Applicant: FUJIMI INCORPORATED

Inventor： Mayumi IWAKUNI ,  Keiji ASHITAKA ,  Naoya MIWA

IPC: C01B25/37 ,  A61K8/29

Abstract: The titanium phosphate powder of the present invention includes plate-shaped crystalline particles of titanium phosphate, an average thickness of the plate-shaped crystalline particles is 0.01 μm or more and less than 0.10 μm, and an aspect ratio, which is a value obtained by dividing an average primary particle diameter of the plate-shaped crystalline particles by the average thickness, is 5 or more. In the method for producing a titanium phosphate powder of the present invention, a raw material containing titanium and phosphorus is caused to react by a hydrothermal synthesis method, and when the titanium phosphate powder including plate-shaped crystalline particles of titanium phosphate is produced, a mixture of titanium sulfate and phosphoric acid is used as the raw material.

公开(公告)号：US20200308010A1

公开(公告)日：2020-10-01

申请号：US16818148

申请日：2020-03-13

Applicant: FUJIMI INCORPORATED

Inventor： Masaaki ITO ,  Jun SHINODA ,  Keiji ASHITAKA

IPC: C01B33/148 ,  C01B33/145

Abstract: A method for manufacturing a silica sol according to an embodiment of the present invention includes: a step of preparing a silica sol reaction liquid by hydrolyzing and polycondensing an alkoxysilane or a condensate thereof using an alkali catalyst in a solvent; and at least one of a step of concentrating the silica sol reaction liquid by an ultrasonic atomization separation method and a step of replacing the silica sol reaction liquid with water by the ultrasonic atomization separation method.

公开(公告)号：US20190127230A1

公开(公告)日：2019-05-02

申请号：US16089945

申请日：2017-03-29

Applicant: FUJIMI INCORPORATED

Inventor： Souma TAGUCHI ,  Keiji ASHITAKA ,  Naoya MIWA

IPC: C01B33/146 ,  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.

公开(公告)号：US20170022392A1

公开(公告)日：2017-01-26

申请号：US15300912

申请日：2015-04-02

Applicant: FUJIMI INCORPORATED

Inventor： Keiji ASHITAKA ,  Kazuma TOUJINBARA ,  Naoya MIWA

IPC: C09G1/02 ,  C09K3/14 ,  B24B37/04

CPC classification number: C09G1/02 ,  B24B37/044 ,  C09K3/1409 ,  C09K3/1463 ,  C23F3/06

Abstract: This invention provides a polishing composition with which high-rate polishing is possible in an application where an object formed of a hard material is polished and also a method for producing a hard material, using the polishing composition. The polishing composition provided by this invention is characterized by that an abrasive formed of titanium diboride is dispersed in a dispersing medium. The hard material production method provided by this invention comprises a step of polishing a hard material surface with the polishing composition.

Abstract translation: 本发明提供了一种抛光组合物，其中在由硬质材料形成的物体被抛光的应用中可以进行高速抛光，以及使用抛光组合物的硬质材料的制造方法。 由本发明提供的抛光组合物的特征在于，由二硼化钛形成的磨料分散在分散介质中。 本发明提供的硬质材料制造方法包括用研磨用组合物研磨硬质材料表面的工序。