Abstract: To provide a membrane electrode assembly which is excellent in strength and is capable of reducing the electrolysis voltage when applied to a water electrolysis apparatus, and such a water electrolysis apparatus. The membrane electrode assembly of the present invention is a membrane electrode assembly for use in a water electrolysis apparatus, comprising an anode having a catalyst layer, a cathode having a catalyst layer, and a polymer electrolyte membrane disposed between the anode and the cathode, wherein the polymer electrolyte membrane comprises a fluorinated polymer having ion exchange groups, and a woven fabric, the aperture ratio of the woven fabric is at least 50%, the denier number of warp yarns and the denier number of weft yarns, constituting the woven fabric, are each independently at least 2, and a relationship of Y?240X?170 is satisfied where the membrane thickness of the polymer electrolyte membrane is Y ?m, and the ion exchange capacity of the fluorinated polymer is X meq/g dry resin.
Abstract: A reflective mask blank for EUV lithography includes a substrate, a reflective layer for reflecting EUV light, and an absorption layer for absorbing EUV light. The reflective layer and the absorption layer are formed on or above the substrate in this order. The absorption layer contains tantalum (Ta) and niobium (Nb), and the absorption layer has a composition ratio Ta:Nb of Ta (at %) to Nb (at %) of from 4:1 to 1:4. Among diffraction peaks derived from the absorption layer observed at 2?: from 20° to 50° by out-of-plane XRD method, a peak having the highest intensity has a half width FWHM of 1.0° or more.
Abstract: The present invention relates to a chemically strengthened glass having a sheet shape, having a compressive stress layer on a glass surface, having a compressive stress value on the glass surface of 800 MPa or more, having a sheet thickness (t) of 100 ?m or more, having a depth of the compressive stress layer (DOL) of (t×0.1) ?m or more, and satisfying: CSB>CSA>0, where DB is a depth in a range of 10 ?m or more and not more than DOL from the glass surface, at which a compressive stress value is maximum; CSB is the compressive stress value at the depth DB; D? is a depth in a range of equal to or less than DB from the glass surface, at which a compressive stress value is minimum; and CSA is the compressive stress value at the depth DA.
Abstract: To provide an azeotrope-like composition which provides a working fluid for heat cycle with a small composition change, with a small temperature glide and with excellent cycle performance, and a working fluid for heat cycle employing the azeotrope-like composition, and a heat cycle system. An azeotropic or azeotrope-like composition consisting of 1-chloro-2,3,3,3-tetrafluoropropene and (E)-1-chloro-3,3,3-trifluoropropene, and a working fluid for heat cycle comprising it.
Abstract: There is provided a working fluid for heat cycle that uses (Z)-1-chloro-2,3,3,3-tetrafluoropropane (HCFO-1224yd(Z)) which has a less impact on the ozone layer, has a less impact on global warming, and has excellent cycle performance, the working fluid for heat cycle having sufficiently ensured stability and having high productivity. The working fluid for heat cycle contains HCFO-1224yd(Z) and an impurity, wherein the impurity includes a specific trace component, and a total content ratio of the trace component to a total amount of the working fluid is less than 1.5 mass %.
January 28, 2019
Date of Patent:
October 19, 2021
Mai Tasaka, Hirokazu Takagi, Masato Fukushima, Toshiyuki Tanaka
Abstract: A reflective mask blank includes, on/above a substrate in the following order from the substrate side a multilayer reflective film which reflects EUV light and an absorber film which absorbs EUV light. The absorber film is a tantalum-based material film containing a tantalum-based material. The absorber film provides a peak derived from the tantalum-based material in an X-ray diffraction pattern, the peak having a peak diffraction angle (2?) of 36.8 degrees or more and a full width at half maximum of 1.5 degrees or more.
Abstract: A transparent display device includes a transparent substrate, a film provided on the transparent substrate via an adhesive layer, and a plurality of light-emitting units provided on the film, wherein each of the light-emitting units includes a light-emitting diode having a surface area of 1 mm2 or less, a thickness of the film is 2 ?m or more and 400 ?m or less, a value obtained by multiplying a tensile strength of the film by the thickness is 5×102 (Pa·m) or more, and a transmittance of visible light is 20% or more.
June 25, 2021
October 14, 2021
Ryo EGUCHI, Masahide KOGA, Yoko MITSUI, Yukihiro TAO
Abstract: A simulation method executed by a computer includes: dividing an analysis domain into divided domains; generating a calculation data model on the divided domains that includes the volume of each divided domain and a characteristic of the domain with respect to each adjacent domain as the quantities not requiring the vertices and connectivity; generating a requested number of aggregated domains by aggregating the divided domains; generating a calculation data model on the aggregated domains that includes the volume of each aggregated domain and a characteristic quantity of the domain with respect to each adjacent domain as the quantities not requiring the vertices and connectivity; and calculating with respect to the physical quantity, based on a physical property in the analysis domain and the calculation data model on the aggregated domains, conductance representing transfer characteristic between the aggregated domains, and capacitance representing accumulation characteristic for each aggregated domain.
Abstract: Each of a mirror surface display device and a light reflecting member includes a support member having an optical thin film thereon, a broadband selective reflection film and a display in this order; the optical thin film being formed on a surface of the support member facing the broadband selective reflection film; and the broadband selective reflection film being a film selectively transmitting one of clockwise circularly polarized light and counterclockwise circularly polarized light, and selectively reflecting the other polarized light, and having cholesteric regularity.
Abstract: A vibration device includes a plate-like glass vibrator and a plurality of exciters that are attached to the glass vibrator and configured to generate vibration according to an input electrical signal. An aspect ratio La/Lb of a length La of a longer side to a length Lb of a shorter side of a rectangle in which the glass vibrator is inscribed is 1.2 to 50. Provided that the number of the exciters is n and a minimum value of distance between the exciters is Smin, a relational value ? (?=Smin?1)/La) is 0.2 to 0.8. In the case where the number n of exciters is 3 or larger, a value ?(?=S?/Save) obtained by dividing a standard deviation S? of distances by an average Save of the distances between the exciters is 0 to 0.5.
Abstract: A chemically strengthened glass obtained by chemically strengthening a lithium-containing aluminosilicate glass, when representing a sheet thickness of the chemically strengthened glass by t (?m) and an internal stress at a depth×(?m) from a surface of the chemically strengthened glass by ?(x) (MPa), has a value of a ratio C=rE/rElimit being greater than or equal to 0.7 and less than 1.0 where rE (kJ/m2) is calculated from Expression (3) described above and rElimit=16×t/1000+3.
Abstract: To provide a process for producing a coated article, capable of producing a coated article having a coating film excellent in weather resistance, using a powder coating material. A process for producing a coated article having a substrate, comprising: applying a curable powder coating material containing a curable polymer containing no fluorine atom, a curing agent and a pigment to a surface of a substrate, to form a first coating layer composed of the curable powder coating material, then applying a powder coating material containing a fluorinated polymer and containing no pigment to a surface of the first coating layer, to form a second coating layer composed of the powder coating material, and heating the first coating layer and the second coating layer simultaneously to form a coating film on the surface of the substrate.
Abstract: To provide a modified polytetrafluoroethylene which is excellent in the moldability by paste extrusion and the mechanical property of the molded article. A modified polytetrafluoroethylene fine powder which is a fine powder of a non-melt-moldable modified polytetrafluoroethylene, characterized in that the modified polytetrafluoroethylene comprises units derived from tetrafluoroethylene, units derived from a perfluoroalkyl vinyl ether represented by CF2?CFO—CnF2n+1 (wherein n is an integer of from 1 to 6), and units derived from a perfluoroalkylethylene represented by CH2?CH—CmF2m+1 (wherein m is an integer of from 3 to 6), and that the content of the units derived from the perfluoroalkyl vinyl ether is from 0.1 to 0.25 mass % and the content of the units derived from a perfluoroalkylethylene is from 0.001 to 0.1 mass %, based on all monomer units in the modified polytetrafluoroethylene.
Abstract: Provided is an antireflective film-attached transparent substrate, including a transparent substrate having first and second principal surfaces and an antireflective film formed on the first principal surface of the transparent substrate, in which the antireflective film has a luminous reflectance being 1% or lower, and the antireflective film-attached transparent substrate has a transmittance being 85% or higher over the whole wavelength range of from 700 nm to 950 nm and has a reflectance being maximum in a wavelength range of from 750 nm to 900 nm in a reflection spectrum of a wavelength range of from 450 nm to 950 nm.
Abstract: To provide a water/oil repellent layer-provided substrate having improved long-term reliability of abrasion resistance, and a method for producing it. A water/oil repellent layer-provided substrate comprising a substrate, an undercoat layer formed on the surface of the substrate, and a water/oil repellent layer formed on the surface of the undercoat layer, in this order, wherein the alkali deficiency index is higher than 0.0, as determined by a depth profile obtained by X-ray photoelectron spectroscopy (XPS) by C60 ion sputtering from the side of the surface of the water/oil repellent layer, taking the total concentration of fluorine, silicon, aluminum, alkali metal elements and oxygen as 100 at %.
Abstract: Processes for producing a fluorinated ether compound are provided by which fluorinated ether compound capable of imparting excellent water/oil repellency, to a substrate surface or a hard coat layer can be easily produced in high yield. A process comprising reacting Rf(CF2)a—CF2OC(?O)Rf4 or Rf(CF2)a—C(?O)X1 with HN(—R1CH?CH2)2 to obtain Rf(CF2)a—C(?O)N(—R1CH2?CH2)2 and a process comprising obtaining the above product and reacting the product with HSiR2nL3?n to obtain Rf(CF2)a—C(?O)N(—R1CH2CH2SiR2nL3?n)2 wherein Rf is a linear polyfluoroalkyl group having at least two carbon atoms and at least one etheric oxygen atom between carbon atoms, Rf4 is a C1-30 perfluoroalkyl group or the like, X1 is a halogen atom, R1 is an alkylene group, a is an integer of from 1 to 5, R2 is a monovalent hydrocarbon group, L is a hydrolyzable group, and n is an integer of from 0 to 2.
Abstract: To provide an acid-type sulfonic acid group-containing polymer which is excellent in hydrogen gas barrier properties and hot water resistance and which generates less oligomer during production; a liquid composition and a polymer electrolyte membrane comprising this acid-type sulfonic acid group-containing polymer; and a membrane electrode assembly and a polymer electrolyte fuel cell provided with the polymer electrolyte membrane. This acid-type sulfonic acid group-containing polymer is a polymer which has perfluoromonomer units, no monomer units having a halogen atom other than a fluorine atom, and acid-type sulfonic acid groups, and of which the hydrogen gas permeability coefficient under the conditions of a temperature of 80° C. and a relative humidity of 10%, is at most 2.5×10?9 cm3·cm/(s·cm2·cmHg), and the mass reduction rate when being immersed in hot water at 120° C.
Abstract: An antenna device includes a power feeding portion; and an antenna including first and second antenna parts, and an amplifier each electrically connected to the power feeding portion. The first antenna part includes a first element including a part extending in a first direction, and a first loop element connected to an end of the first element. The second antenna part includes a second element including a part extending in the first direction, and a second loop element connected to an end of the second element. The first loop element includes a part extending in the first direction, and a part extending in the second direction different from the first direction. The second loop element includes a part extending in the first direction, and a part extending in a third direction opposite to the second direction. The first and second loop elements are positioned apart from each other.
Abstract: To provide a perfluoropolymer capable of producing an electrolyte membrane excellent in electrical conductivity and mechanical strength under high temperature environment, as well as a liquid composition, a polymer electrolyte membrane, a membrane electrode assembly and a polymer electrolyte fuel cell, obtainable by using the perfluoropolymer. The perfluoropolymer of the present invention contains perfluoromonomer units, does not substantially contain units having a halogen atom other than a fluorine atom, does not substantially contain units having a ring structure, and has acid-type sulfonic acid groups, wherein the perfluoromonomer units contain at least one type of units A selected from the group consisting of perfluoro vinyl ether units and perfluoro allyl ether units; the ion exchange capacity is from 1.4 to 2.5 milliequivalent/gram dry resin; and the storage modulus at 120° C. is at least 60 MPa.