Nissan Chemical Corporation

University Public Corporation Osaka

Hirotake Kitagawa

Satoru Murakami

Kazutoshi Sekiguchi

Masashi Abe

Jiahao Liu

Tomohiro Iwasaki

Masaya Kashihara

Takahiro Ohori

A dispersion includes silane-bonded inorganic oxide particles having surfaces modified with a hydrolyzable silane, and a liquid dispersion medium which contains a hydrolysate of the hydrolyzable silane; the ratio of (the number of moles of silicon atoms of the hydrolysate of the hydrolyzable silane in the dispersion medium)/(the number of moles of silicon atoms of the silane bonded to the surfaces of the particles) is 0.2 to 30; and Q4 is greater than that before the surface modification with silane, wherein Q4 corresponds to the case where the number of bridging oxygen atoms between silicon atoms of the silica particles is 4/2 per one silicon atom as determined by Si-NMR observation. The inorganic oxide particles have an average diameter of 5 nm to 100 nm and are particles of silica and at least one inorganic oxide from the group of alumina, tin oxide, zirconium oxide, titanium oxide, and antimony oxide.

Dispersion of surface-treated silica-containing inorganic oxide particles and method for producing same

A stable dispersion of exfoliated layer substances is prepared through interlayer exfoliation of a layered compound. A dispersion including quaternary ammonium ions (A) each having a total carbon atom number of 15 to 45 and one or two Calkyl groups, and an anionic surfactant (B) having an ammonium ion, wherein plate-like particles (C) having an average thickness of 0.7 to 40 nm, an average major-axis length of 100 to 600 nm, an average minor-axis length of 50 to 300 nm, and a ratio of average major-axis length to average minor-axis length of 1.0 to 10.0 are dispersed in a liquid medium, and the plate-like particles (C) in the dispersion have an average particle diameter of 10 to 600 nm as measured by dynamic light scattering, and a transparent substrate using the dispersion.

Exfoliated layer dispersion of layered compound, and transparent substrate using same

Provided is a method capable of easily producing a layered silicate in a short time. The problem may be solved by a method of producing a layered silicate, including the following steps (a) and (b):

Method of producing layered silicate, and application thereof in production of silica nanosheet and so on

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Sodegaura, Japan

Hirotake Kitagawa