Nissan Chemical Industries Limited

Other

Hoya Corporation

Idemitsu Kosan Company, Limited

Petroleum Energy Center, a Juridical Incorporated Foundation

Nissan Chemical Corporation

Yoshinari Koyama

Keitaro Suzuki

Yoshitane Watanabe

Motoko Iijima

Motoko Asada

Natsumi Murakami

Tomoki Furukawa

Taku Kato

Osamu Tanegashima

Osamu Fujimoto

Masaaki Ozawa

Naoya Nishimura

Ai Miyamoto

Takeshi Takahashi

Hirokazu Kato

Naohiko Suemura

Masayoshi Suzuki

Keiko Yoshitake

Yutaka Ohmori

Kenji Yamaguchi

Shoichi Kaneko

Takanobu Itoh

Natsumi Tsuihiji

Daiki Iijima

Tomonari Shinji

Tomonori Furukawa

A substrate is coated with a transparent coating film using a coating liquid for forming a transparent coating film including metal oxide particles and a matrix formation component. The metal oxide particles each include a metal oxide particle containing titanium oxide coated with silicon dioxide-stannic oxide complex oxide, including a titanium oxide-containing core particle; and a coating layer with which the titanium oxide-containing core particle is coated and that is made of silicon dioxide-stannic oxide complex oxide colloidal particles having a mass ratio of silicon dioxide/stannic oxide of 0.1 to 5.0, where one or more intermediate thin film layers that are made of any one of an oxide; a complex oxide of at least one element selected from Si, Al, Sn, Zr, Zn, Sb, Nb, Ta, and W; and a mixture of the oxide and the complex oxide are interposed between the core particle and the coating layer.

Metal oxide particles containing titanium oxide coated with silicon dioxide-stannic oxide complex oxide

There are provided a coating composition being possible to form a cured film which has excellent transparency and weather resistance, and especially hardness. A coating composition obtained by which a silicon-containing substance as a component (M) and a silica colloidal particle having a primary particle diameter of 2 to 80 nm as a component (S) are mixed, and then the component (M) is hydrolyzed, and the resulting aqueous solution is subsequently mixed with a colloidal particle (C) wherein a component (F) is a modified metal oxide colloidal particle (C) having a primary particle diameter of 2 to 100 nm, which includes a metal oxide colloidal particle (A) having a primary particle diameter of 2 to 60 nm as a core, whose surface is coated with a coating (B) formed of an acidic oxide colloidal particle.

Coating composition and optical member

A coating film-forming composition includes a hydrolysis-condensation product of a hydrolyzable silane and fine inorganic particles subjected to a special dispersion treatment, that can be formed into a highly heat-resistant, highly transparent coating film capable of exhibiting a high refractive index and having a large thickness and excellent storage stability as a coating composition; and a process for producing the coating film-forming composition.

Coating film-forming composition and process for producing the same

A dispersion that inorganic oxide microparticles may be dispersed at a high concentration in a solvent, a composition for film formation having high transparency, high refractive index and adhesion to a base layer. Inorganic oxide microparticles wherein an amphiphilic organosilicon compound having one or more selected from a polyoxyethylene group, a polyoxypropylene group, or a polyoxybutylene group as a hydrophilic group, and one or more selected from a Calkylene group or a vinylene group as a hydrophobic group bonded to a surface of modified metal oxide colloidal particles (C) having a primary particle diameter of 2 to 100 nm, the modified metal oxide colloidal particles wherein a surface of metal oxide colloidal particles (A) having a primary particle diameter of 2 to 60 nm as a nucleus is coated with a coating material (B) including metal oxide colloidal particles having a primary particle diameter of 1 to 4 nm.

Inorganic oxide microparticles having amphiphilic organic silane compound bonded thereto, organic solvent dispersion thereof, and composition for film formation

A film-forming composition including a triazine ring-containing hyperbranched polymer with a repeating unit structure indicated by formula (1), and inorganic micro particles is provided. This enables the provision of a film-forming composition capable of hybridizing without reducing dispersion of the inorganic micro particles in a dispersion fluid, capable of depositing a coating film with a high refractive index, and suitable for electronic device film formation. In the formula, R and R' are mutually independent and indicate a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, or an aralkyl group, and Ar indicates a divalent organic group including either an aromatic ring or a heterocyclic ring, or both.

Film-forming composition

A film-forming composition including a triazine ring-containing hyperbranched polymer with a repeating unit structure indicated by formula (1), and inorganic micro particles is provided. This enables the provision of a film-forming composition capable of hybridizing without reducing dispersion of the inorganic micro particles in a dispersion fluid, capable of depositing a coating film with a high refractive index, and suitable for electronic device film formation. (In the formula, R and R' are mutually independent and indicate a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, or an aralkyl group, and Ar indicates a divalent organic group including either an aromatic ring or a heterocyclic ring, or both.)

There is provided a colloidal particle of an oxide of at least one metal selected from the group consisting of Ti, Fe, Zr, Sn, Ta, Nb, Y, Mo, W, Pb, In, Bi, and Sr, which is capable of being dispersed in a hydrophobic organic solvent, and a hydrophilic organic solvent dispersed sol thereof or a sol thereof dispersed in a hydrophobic organic solvent having a solubility of water of 0.05 to 12% by mass, and further, a fine powder of a metal oxide colloidal particle capable of being redispersed in various organic solvents. A silane treated modified metal oxide colloidal particle on the surface of which an amine compound and 1 to 4 silyl group(s) per 1 nmof the surface area are bonded, and which is produced by coating a metal oxide colloidal particle as a core with a complex oxide colloidal particle.

Silane surface-treated metal oxide fine particles and production method for same

There is provided provide a method for efficiently producing a rutile type titanium sol having a particle diameter based on dynamic light scattering method of 5 nm to 100 nm that is excellent in dispersibility. The method for producing a rutile type titanium oxide sol comprising: process (a): mixing metastannic acid, a titanium alkoxide, a quaternary ammonium hydroxide, oxalic acid, and water so as to contain 0.02 moles to 0.8 moles of tin atoms, 0.1 moles to 3.5 moles of the quaternary ammonium hydroxide, and 0.1 moles to 8.0 moles of the oxalic acid with respect to 1 mole of titanium atoms of the titanium alkoxide to prepare a titanium-containing aqueous solution with a concentration in terms of TiOof 0.1% by mass to 15% by mass; and process (b): subjecting the titanium-containing aqueous solution obtained in process (a) to a hydrothermal treatment at a temperature from 100&#xb0; C. to 170&#xb0; C.

Method for producing rutile type titanium oxide sol

A method for producing a rutile titanium oxide sol having a particle diameter measured by dynamic light scattering of 5 nm to 100 nm, the method comprising: a process (a): mixing a tin oxalate aqueous solution, a titanium alkoxide, oxalic acid, a quaternary ammonium hydroxide, and water, while adjusting, per mole of titanium atoms, a proportion of tin atoms to be from 0.1 mol to 0.8 mol, a proportion of the oxalic acid to be from 0.01 mol to 5 mol, and a proportion of the quaternary ammonium hydroxide to be from 0.1 mol to 3.5 mol to prepare a titanium-containing aqueous solution having a concentration in terms of TiOof 0.1% by mass to 15% by mass; and a process (b): performing hydrothermal treatment on the titanium-containing aqueous solution produced in the process (a) at 100&#xb0; C. to 200&#xb0; C.

Method for producing rutile titanium oxide sol

A hydrophobic organic solvent-dispersed sol of anhydrous zinc antimonate colloidal particles and a method for producing the same. The hydrophobic organic solvent-dispersed sol includes surface-modified anhydrous zinc antimonate colloidal particles dispersed in a hydrophobic organic solvent having a water solubility of 0.002 to 12% by mass. The surface-modified anhydrous zinc antimonate colloidal particles are formed by: coating outer surfaces of anhydrous zinc antimonate colloidal particles (A) serving as cores with at least one substance (B) of colloidal particles of a composite oxide containing silica and stannic oxide or silica and antimony pentoxide at a silica/stannic oxide or silica/antimony pentoxide ratio of 0.1 to 10, an oligomer of the colloidal particles, or a mixture of the colloidal particles and the oligomer to form modified anhydrous zinc antimonate colloidal particles (C); and bonding an organosilicon compound and an amine compound to surfaces of the colloidal particles (C).

Hydrophobic organic solvent-dispersed sol of anhydrous zinc antimonate colloidal particles and method for producing the same

There is provided an organosol of surface-modified fluoride colloid particles obtained by coating the surface of a fluoride colloid particle as a core with an organophosphorus compound and a method for producing the organosol. An organosol of a surface-modified fluoride colloid particle comprising: a fluoride colloid particle as a core; and at least one type of an organophosphorus compound selected from a group consisting of organophosphorus compounds represented by the following general formula (1), (2), and (3):(R&#x2014;O)P(&#x2550;O)(OM)&#x2003;&#x2003;(1)(R&#x2014;O)P(OM)&#x2003;&#x2003;(2)(R)P(&#x2550;O)(OM)&#x2003;&#x2003;(3)where R represents a substituted or unsubstituted alkyl group, alkenyl group or aryl group, M represents a hydrogen atom, an alkali metal or NZ(Z represents a hydrogen atom or an alkyl group); and n represents an integer of 1 or 2, the organophosphorus compound coating a surface of the fluoride colloid particle.

Organosol of fluoride colloid particle and method for producing the same

It is intended to provide a stable sol containing zirconium oxide-tin oxide composite colloids to be used for improving the performance such as abrasion resistance, transparency, adhesiveness, water resistance or weather resistance of a dried film obtained by applying a hard coating agent containing colloidal particles to the surface of plastic lens. A production method includes the steps of obtaining a sol containing colloidal particles (A1) in which the surface of particles in a sol containing hydrothermally-processed zirconium oxide-tin oxide composite colloids (A) is coated with amine-containing SbOcolloidal particles; obtaining a sol containing colloids (A2) coated with amine-containing SbOcolloidal particles by performing a hydrothermal treatment at a temperature of from 200 to 350&#xb0; C.; and mixing the sol containing the colloidal particles (A2) and a sol containing tungsten oxide-tin oxide-silicon dioxide composite colloidal particles (B2) and aging the resulting aqueous medium at 20 to 100&#xb0; C.

Method for producing modified zirconium oxide-tin oxide composite sol

There is provided a conductive tin oxide sol having a high transparency, and a process for producing the sol, a coating composition by use of the sol and a material coated with the coating composition. The conductive tin oxide sol containing phosphorus-doped conductive tin oxide colloidal particles (A), wherein a sol prepared so as to have the colloidal particles (A) in a concentration of 10 mass % in the sol has a transmittance of 30% or more at a wavelength of 600 nm in an optical path length of 10 mm. The particle diameter of the conductive tin oxide sol by observation with transmission electron microscope is 2 to 25 nm. The molar ratio of the doped phosphorus (P) to the tin oxide (SnO) in the colloidal particles (A) is 0.005 to 0.2. The conductive tin oxide sol is produced by mixing a phosphorus compound in a tin oxide sol, and then subjecting to a hydrothermal treatment. The coating composition contains the conductive tin oxide sol and a binder. The material having a coating film formed from the coating composition is also provided.

Conductive tin oxide sol and process for producing same

A process for producing an inorganic oxide organosol that has good dispersibility and low viscosity, has excellent transparency, and shows good compatibility with resin solutions, and includes the steps (A) and (B) of: (A) adding silicon alkoxide having two or more alkoxy groups bonded to a silicon atom or having one or more hydroxy groups bonded to a silicon atom and one or more alkoxy groups bonded to a silicon atom to a hydrophilic inorganic oxide sol containing a hydrophilic solvent having a boiling point (1 atm) of 100&#xb0; C. or less in an amount of 25 to 100% by weight in a dispersion medium to treat surface of the inorganic oxide particles in the sol; and (B) replacing the dispersion medium of the surface treated inorganic oxide sol obtained in step (A) with a non-alcoholic organic solvent in the presence of a primary alcohol having 3 to 12 carbon atoms.

Process for producing inorganic oxide organosol

It is to provide a sol useful as a component of a hard coating agent to be applied on the surface of a plastic lens or useful for other applications, and its production process. A sol containing modified metal oxide particles which comprise, as nuclei, colloidal particles (A) being stannic oxide particles or composite particles comprising stannic oxide particles and zirconium oxide particles, containing these oxides in a weight ratio of ZrO:SnOof from 0:1 to 0.50:1 and having particle sizes of from 4 to 50 nm, and as a coating covering the surface of the nuclei, alkylamine-containing SbOcolloidal particles, an oligomer thereof or a mixture thereof (B1), or composite colloidal particles comprising diantimony pentaoxide and silica, an oligomer thereof or a mixture thereof (B2), in a weight ratio of (B)/(A) of from 0.01 to 0.50 based on the weights of the metal oxides, and have particle sizes of from 4.5 to 60 nm. A coating composition containing a silicon-containing substance and the above particles. An optical element covered with the coating composition.

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Sodegaura, Japan

Yoshinari Koyama