公开(公告)号：US20240279494A1

公开(公告)日：2024-08-22

申请号：US18560366

申请日：2022-03-28

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Hiroya YAMAMOTO ,  Rui HASEBE ,  Megumi TOMISAKI ,  Masanori URAYA ,  Tetsuo NISHIDA ,  Keiichi NII ,  Keigo FUJIWARA

IPC: C09D7/61 ,  C09D5/00 ,  C09D5/02 ,  C09D7/20 ,  C09D7/40 ,  C09D7/45 ,  G02B1/11

CPC classification number: C09D7/61 ,  C09D5/006 ,  C09D5/027 ,  C09D7/20 ,  C09D7/45 ,  C09D7/67 ,  G02B1/11

Abstract: Provided are a liquid dispersion of fluoride particles having a refractive index lower than that of, for example, magnesium fluoride, the liquid dispersion being excellent in dispersibility and suitable for production of an optical film such as an antireflection film; a composition for forming an optical film; and an optical film. A liquid dispersion of fluoride particles according to the present invention contains: fluoride particles; an anionic surfactant as a dispersant for the fluoride particles; and an organic solvent, wherein the fluoride particles contain at least aluminum, an alkali metal, and an alkaline earth metal as an optional element in a composition of the fluoride particles, and the fluoride particles are dispersed in the organic solvent.

公开(公告)号：US20230038554A1

公开(公告)日：2023-02-09

申请号：US17788140

申请日：2020-11-11

Applicant: STELLA CHEMIFA CORPORATION

Inventor： Masanori URAYA ,  Hiroya YAMAMOTO ,  Rui HASEBE ,  Megumi TOMISAKI ,  Tetsuo NISHIDA

IPC: C01B33/10 ,  G02B1/111

Abstract: Provided are a liquid dispersion of fluoride particles, which has low viscosity and excellent dispersibility, and is suitable for producing an optical film such as an antireflection film; a method for producing the same; and an optical film using the same. The liquid dispersion of fluoride particles according to the present invention is that in which particles of a fluoride represented by the chemical formula AxCFy (wherein A represents sodium or potassium, C represents silicon or boron, x is 1 or 2, and y is 4 or 6) are dispersed in an aprotic organic solvent having a relative permittivity of 5 to 40, and the optical film according to the present invention is produced by using the liquid dispersion of fluoride particles.