Tokuyama Corporation | Date: 2014-11-05
The present invention relates to a method for producing inorganic oxide particles, comprising at least the following steps of: The inorganic oxide particles obtained by the method of the present invention have high purity and are excellent in flowability.
Tokuyama Corporation | Date: 2015-03-31
Provided is a method for producing a photochromic optical article having a photochromic coating layer exhibiting photochromism formed on an optical base such as a plastic lens which has good optical characteristics and photochromic characteristics, and also has good adhesion between the base and the photochromic layer. The method enables to easily produce such a photochromic optical article by improving wettability of a photochromic coating agent for a primer. In this method, the photochromic optical article is produced by forming a primer layer on the optical base surface by coating a primer comprising an emulsion which has a colloidally dispersed urethane resin in a dispersion medium, and then forming on the primer layer.
Tokuyama Corporation | Date: 2014-02-07
A sapphire single crystal core having an r-axis direction, a length of 200 mm or more and a diameter of 150 mm or more and containing no air bubbles, and a method of producing the sapphire single crystal core, comprising the steps of:
Tokuyama Corporation | Date: 2014-02-28
A photochromic curable composition comprising a silsesquioxane monomer (A1) having a radically polymerizable group and an acid value of 0.5 to 2.0 ngKOH/g and a photochromic compound (B). This photochromic curable composition can be advantageously used for the manufacture of a photochromic cured product having an excellent photochromic function and is suitable for the provision of a photochromic cured product for obtaining a laminate having excellent adhesion in a lamination method.
Tokuyama Corporation | Date: 2014-02-13
A resin composition containing aluminum nitride particles, a heat-curable resin or a thermoplastic resin, and an alkyl acid phosphate having a specific structure is produced by mixing the aluminum nitride particles, the heat-curable resin or thermoplastic resin, and the alkyl acid phosphate having the specific structure. Molding and curing the resin composition make it possible to obtain a resin-molded article having high thermal conductivity.