公开(公告)号：US20250034401A1

公开(公告)日：2025-01-30

申请号：US18712165

申请日：2022-12-01

Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.

Inventor： Ryohei YOSHIDA ,  Keita KOBAYASHI ,  Ryo IWASAKI

IPC: C09C3/12 ,  C09C1/04

Abstract: To provide zinc oxide particles having a surface coated with organosilicon, the particles exhibiting a high dispersibility and excellent water repellency. Zinc oxide particles having a surface coated with organosilicon, the zinc oxide particles having a primary particle size of 0.1 μm or less as measured based on a transmission electron micrograph, and a median size based on a volume of 0.15 μm or less, where the median size is determined by charging the powder in isopropyl alcohol, dispersing the powder by application of ultrasonic wave with a rated output of 600 W and an oscillation amplitude of 100% generated by an ultrasonic homogenizer at a normal temperature for 30 seconds, and measuring the dispersion by a laser diffraction scattering method.

公开(公告)号：US20200172407A1

公开(公告)日：2020-06-04

申请号：US16615629

申请日：2018-06-08

Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.

Inventor： Ryohei YOSHIDA ,  Mitsuo HASHIMOTO ,  Kazutaka MURAI

IPC: C01G9/02 ,  A61K8/27 ,  A61Q1/00

Abstract: The present invention provides a method capable of producing hexagonal plate-shaped zinc oxide having a small thickness and a small variation in the particle size. The present invention relates to a method for producing hexagonal plate-shaped zinc oxide, the method including: a step (1) of preparing a slurry mixture containing starting particulate zinc oxide, a zinc acetate solution, and a chloride; and a step (2) of heat aging the slurry mixture obtained in the step (1) at 60° C. to 100° C.

公开(公告)号：US20200368124A1

公开(公告)日：2020-11-26

申请号：US16766585

申请日：2018-11-26

Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.

Inventor： Ryohei YOSHIDA ,  Mitsuo HASHIMOTO ,  Ikuhisa NAKANISHI ,  Takahiro DOMOTO

IPC: A61K8/27 ,  A61K8/65 ,  A61K8/89 ,  A61Q17/04 ,  A61K47/42 ,  A61K47/02

Abstract: This invention provides a material that is capable of preparing an external composition that achieves high smoothness and low roughness and that reflects near-infrared rays. Specifically, a granular composite comprising keratin and hexagonal plate-shaped zinc oxide particles is provided.

公开(公告)号：US20160347624A1

公开(公告)日：2016-12-01

申请号：US15116425

申请日：2014-12-16

Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.

Inventor： Ryohei YOSHIDA ,  Satoru SUEDA ,  Mitsuo HASHIMOTO ,  Mizuho WADA

IPC: C01G9/02 ,  A61K8/02 ,  G02B5/20 ,  C09C1/04 ,  C09D7/12 ,  C08K3/22 ,  A61K8/27 ,  A61Q17/04

Abstract: It is one of objects of the present disclosure to provide hexagonal plate-shaped zinc oxide particles which can be used suitably for a cosmetic, a filler, a resin composition, an infrared radiation reflective material, and a coating composition, and a method for producing the same.Hexagonal plate-shaped zinc oxide particles having a primary particle diameter of 1.1 μm or more and a D90/D10 of 3.0 or less in particle size distribution.

Abstract translation: 一次粒径为1.1μm以上，D90 / D10的粒径分布为3.0以下的六角板状氧化锌粒子。