公开(公告)号：US20240166530A1

公开(公告)日：2024-05-23

申请号：US18550804

申请日：2022-03-16

Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.

Inventor： Takuma IEDA ,  Kappei FUKUROI ,  Takanori MORITA ,  Hironobu OGATA

IPC: C01G25/02

CPC classification number: C01G25/02 ,  C01P2004/64 ,  C01P2006/22 ,  C01P2006/80 ,  C01P2006/90

Abstract: An object of the present invention is to provide a dispersion of a zirconium element-containing metal oxide having high transparency and low viscosity even at high concentration. The present invention relates to a method of producing a zirconium element-containing metal oxide dispersion, and the production method includes a step of heating a slurry containing a zirconium element-containing compound as a metal element-containing compound to perform a hydrothermal reaction, in which the heating in the hydrothermal reaction step is performed at a temperature rising rate of 90° C./hour or more.

公开(公告)号：US20240345292A1

公开(公告)日：2024-10-17

申请号：US18577096

申请日：2022-06-27

Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.

Inventor： Kappei FUKUROI ,  Kasumi ONISHI ,  Hirotaka TAKETSUNA ,  Takuma IEDA ,  Takanori MORITA

IPC: G02B1/14

CPC classification number: G02B1/14

Abstract: The present invention provides a composition for coating which is excellent in stability over time and exhibits excellent transparency when being formed into a coating film. The composition for coating contains a zirconium element-containing metal oxide (A), and a silane compound (B), wherein the zirconium element-containing metal oxide (A) has a zeta potential value as measured by the following method of 30 mV or higher:




a 10-mass % zirconium element-containing metal oxide (A) water dispersion is measured at room temperature (25° C.) by a laser doppler electrophoresis method.

公开(公告)号：US20240150544A1

公开(公告)日：2024-05-09

申请号：US18547836

申请日：2022-02-07

Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.

Inventor： Kappei FUKUROI ,  Takuma IEDA ,  Toyonao YAMAUCHI ,  Hirotaka TAKETSUNA ,  Takashi SHIKIDA ,  Shinji IKESHITA ,  Hironobu OGATA

IPC: C08K3/22 ,  C08K5/521

CPC classification number: C08K3/22 ,  C08K5/521 ,  C08K2003/2244 ,  C08K2201/003

Abstract: The present invention provides a zirconium element-containing resin composition capable of achieving both high transparency and a high refractive index. The present invention is a zirconium element-containing resin composition containing a zirconium element-containing metal oxide (A); a dispersant (B); and a polymerizable resin (C), in which the zirconium element-containing metal oxide (A) has an average particle diameter of 20 nm or less as measured by a dynamic light scattering method, and the dispersant (B) contains a compound represented by the following formula (1), the zirconium element-containing resin composition may contain a silane coupling agent, and a content ratio of the silane coupling agent is less than 30 parts by mass with respect to 100 parts by mass of a total of the compound represented by the formula (1) and the silane coupling agent.