Sakai Chemical Industry Co., Ltd.

Ryohei Yoshida

Mitsuo Hashimoto

Kazutaka Murai

Satoru Sueda

Mizuho Wada

Takahiro Domoto

Ikuhisa Nakanishi

The present invention provides zinc oxide having excellent infrared blocking ability, high whiteness, and excellent texture during use. The present invention relates to trivalent metal-doped hexagonal plate-shaped zinc oxide having an aspect ratio of 2.5 or greater, the trivalent metal-doped hexagonal plate-shaped zinc oxide having a trivalent metal element content based on the zinc element of 0.15 to 5 mol %, a whiteness of 90 or higher, and a powder spectral reflectance at a wavelength of 1500 nm of 80% or less.

Trivalent metal-doped hexagonal plate-shaped zinc oxide and method for producing same

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&#xb0; C. to 100&#xb0; C.

Method for producing hexagonal plate-shaped zinc oxide

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.

Granular composite containing keratin and hexagonal plate-like zinc oxide

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 &#x3bc;m or more and a D90/D10 of 3.0 or less in particle size distribution.

Hexagonal plate-shaped zinc oxide particles, method for production of the same, and cosmetic, filler, resin composition, infrared reflective material, and coating composition containing the same

Growing community of inventors

Fukushima, Japan

Ryohei Yoshida