Tokyo, Japan
Tokyo, Japan

Time filter

Source Type

Patent
Tokuyama Corporation | Date: 2017-02-01

The present invention provides a novel anion conductor which comprises a layered metal hydroxide and can be used as an alkaline electrolyte film for use in a fuel cell or the like. An anion conductor characterized by comprising a molded product of a layered metal hydroxide represented by formula (1): [M_(x)(OH)_(y)(A)_((x-y)/z)-nH_(2)O] (wherein M represents a metal that can serve as a bivalent or trivalent cation; represents the number of valency of the metal M, A represents an atom or an atomic group that can serve as an anion, and z represents the number of valency of the anion A, wherein, when (x-y)/z is 2 or greater, As may be different types of anions which can serve as anions having the same valencies as each other, or may be anions having different valencies from each other; and n represents the average number of molecules of interlayer water contained per one repeating unit). The anion conductor according to the present invention is composed of an inorganic material, and therefore has excellent heat resistance and physical strength and can be operated for a longer period at a higher temperature compared with the conventional ones when used as an anion conductor for a fuel cell, an air cell or the like.


Patent
Tokuyama Corporation | Date: 2017-05-10

To enable firm bonding to a member including a polyaryl ether ketone resin. A bonding method including: a bonding material applying step for applying, to the surface of a member including a polyaryl ether ketone resin, a bonding material including (A) a polymerizable monomer and (B) at least a portion of components for configuring a polymerization initiator, the content ratio of polymerizable monomers at least having two or more polymerizable functional groups in a (p2) molecule among all polymerizable monomers being 50% by mass or greater, and the content ratio of polymerizable monomers at least having one or more polymerizable functional groups and one or more functional groups capable of hydrogen bonding in a (p1h1) molecule being 5% by mass or greater; and a curing step for curing the bonding material. A bonding material and bonding kit using the bonding method.


Patent
Tokuyama Corporation | Date: 2017-05-31

A curable composition having excellent storage stability and capable of forming a cured product having excellent scratch resistance. The composition comprises a silsesquioxane monomer having a radically polymerizable group in the molecule and a content of a component having a molecular weight measured by gel permeation chromatography (GPC) of not less than 10,000 of less than 9 mass% and a bifunctional polymerizable monomer represented by the following formula (1).^(5) and R^(6) are each a hydrogen atom or methyl group.)


To provide a photopolymerization device and to provide a production method for a lens that has a photochromic coating layer, the device and the production method being capable of preventing the occurrence of wide liquid pool and of the wrinkle of an end part, even for a workpiece that has a refractive index that is close to that of the photochromic coating layer. A photopolymerization device (20) that has: a workpiece holding part (1) that holds a workpiece (W); and a photoirradiation device (6) that is arranged above the workpiece holding part (1) and that radiates light toward the workpiece (W). The photopolymerization device (20) is configured such that a reflecting plate (3) that has a reflecting surface that has a specular gloss at angles of 60 of 10-200 is arranged below the workpiece holding part (1) and such that light that arrives at the reflecting surface of the reflecting plate (3) is radiated toward the workpiece (W).


Patent
Tokuyama Corporation | Date: 2017-07-19

An object of the present invention is to provide a method for manufacturing a reproduction of a painting, which can use different types of paintings as original paintings and reproduce the matiere of the original painting and which also improves the light stability of ink. According to the present invention, there is provided a method for manufacturing a reproduction of a painting, comprising: forming an irregularity-reproducing layer, which has irregularities reflecting the irregularities of the painting being an original painting, on a base sheet by use of a slurried mixture containing an organic binder, calcium hydroxide having a volume-based median diameter (d50), as measured by laser diffraction scattering, of 10 m or less, and a water-insoluble inorganic powder having a volume-based median diameter (d50), as measured by laser diffraction scattering, of 5.0 m or less; and printing the painting on the irregularity-reproducing layer by inkjet printing.


Patent
Tokuyama Corporation | Date: 2017-07-19

[Problem] To provide a method for effectively removing minute impurities of 1 m or less in size that are present on a surface of an aluminum nitride single-crystal substrate without etching the surface. [Solution] A surface of an aluminum nitride single-crystal substrate is scrubbed using a polymer compound material having lower hardness than an aluminum nitride single crystal, and an alkali aqueous solution having 0.01-1 mass% concentration of an alkali selected from the group consisting of potassium hydroxide and sodium hydroxide, said alkali aqueous solution being absorbed in the polymer compound material.


Patent
Tokuyama Corporation | Date: 2017-07-05

Provided are: a polymerizable monomer excellent in mechanical strength of its cured product and excellent also in handling property with low viscosity even under a room temperature environment, specifically, a polymerizable monomer, which is represented by the following general formula (1):^(1) and Ar^(2) each represent an aromatic group having a valence selected from divalence to tetravalence, L^(1) and L^(2) each represent a divalent hydrocarbon group having a main chain with a number of atoms within a range of from 2 to 10 and containing at least one hydroxy group, and may be identical to or different from each other, R^(1) and R^(2) each represent hydrogen or a methyl group, q represents 0 or 1, and m1 and m2 each represent 1 or 2; and a curable composition and a resin member each using the polymerizable monomer.


Patent
Tokuyama Corporation | Date: 2017-07-05

Provided are: a polymerizable monomer excellent in mechanical strength of its cured product and excellent also in handling property with low viscosity even under a room temperature environment, specifically, a polymerizable monomer, which is represented by the following general formula (1):^(1) and Ar^(2) each represent an aromatic group having a valence selected from divalence to tetravalence, and may be identical to or different from each other, L^(1) and L^(2) each represent a hydrocarbon group having a main chain with a number of atoms within a range of from 2 to 60 and having a valence selected from divalence to tetravalence, and may be identical to or different from each other, R^(1) and R^(2) each represent a hydrogen atom or a methyl group, and m1, m2, n1, and n2 each represent an integer selected from a range of from 1 to 3; and a curable composition and a resin member each using the polymerizable monomer.


To provide an odorant for fuel gases for anion membrane fuel cells, which does not generate a harmful sulfur compound after combustion and does not deteriorate the performance of a fuel cell, while enabling leakage detection at low concentrations, and which enables detection of leakage of a gas by a means other than odor, for example, by visual observation. An odorant for fuel gases for anion membrane fuel cells, which imparts a fuel gas with an odor, and which is characterized in that the odorant contains at least one or more substances selected from the group consisting of ammonia, trimethylamine, triethylamine, N,N-diethylmethylamine, N,N-dipropylmethylamine, N,N-dipropylethylamine, N,N-diisopropylmethylamine, N,N-diisopropylethylamine, dimethylamine, diethylamine, dipropylamine, ethylmethylamine, propylmethylamine, propylethylamine, methylamine, ethylamine and propylamine.


Patent
Tokuyama Corporation | Date: 2017-08-02

A package in which a bag formed from a polyethylene-based resin film having a small thickness, more specifically a thickness of 300 m or less is filled with crushed polysilicon (Si chunks) and damage to the bag by the Si chunks is effectively prevented. In a polysilicon package in which the bag 1 formed from a polyethylene-based resin having an average thickness of 300 m or less is filled with the Si chunks 4, the bag 1 has a heat-sealed bonded part 2 at the bottom and is filled with the Si chunks 4 to ensure that the maximum expansion of the bag 1 becomes 5 % or less when the bag 1 is held in an upright state with the bottom as a ground contact surface.

Loading Tokuyama Corporation collaborators
Loading Tokuyama Corporation collaborators