Abstract: The present invention relates to pellets comprising a liquid crystal polyester resin, wherein an average length (L) of the pellets is 3.2 to 12 mm, an average diameter (D) of the pellets is 3.2 to 6.0 mm, and a value of the average length (L)/the average diameter (D) of the pellets is 1 to 2.

Abstract: A resin-made pipe is provided, the resin-made pipe containing: a liquid crystal polyester resin composition as a formation material, in which the pipe has a bending part, a melt viscosity of the liquid crystal polyester resin composition satisfies Formula (A), and an arithmetic mean roughness (Ra) of an inner surface of the pipe in an extension direction is 0.2 ?m or more and 5 ?m or less. B/A?10??(A) (A is a melt viscosity of the liquid crystal polyester resin composition at a temperature being a flow starting temperature+20° C. and B is a melt viscosity of the liquid crystal polyester resin composition at the flow starting temperature.

Abstract: This banding band has a belt-like portion having a plurality of teeth on at least one surface thereof, and a securing portion positioned at one end of the belt-like portion, wherein the securing portion has a through-hole into which the other end of the belt-like portion can be inserted, and at least the belt-like portion comprises an amorphous resin having a glass transition temperature of 180° C. or higher.

Abstract: A method for manufacturing a welded molding made of liquid crystal polyester as a formation material is provided, the method including: a step of heating each of a first ridge portion of a first member made of the liquid crystal polyester as a formation material and a second ridge portion of a second member made of the liquid crystal polyester as a formation material to a temperature equal to or higher than a flow start temperature of the liquid crystal polyester; and a step of abutting the first ridge portion and the second ridge portion to each other to perform vibration welding while pressing the first ridge portion and the second ridge portion in a direction in which the first ridge portion and the second ridge portion are brought relatively close to each other.

Abstract: A liquid crystalline polymer composition for foam molding using a supercritical fluid as a foaming agent. The liquid crystalline polymer composition includes a liquid crystalline polymer and a scale-like inorganic filler, in which a content of the scale-like inorganic filler is 1 part by mass or more and 20 parts by mass or less with respect to 100 parts by mass of the liquid crystalline polymer composition.

Abstract: This banding band has a belt-like portion having a plurality of teeth on at least one surface thereof, and a securing portion positioned at one end of the belt-like portion, wherein the securing portion has a through-hole into which the other end of the belt-like portion can be inserted, and at least the belt-like portion comprises an amorphous resin having a glass transition temperature of 180° C. or higher.

Abstract: A liquid crystal polymer resin composition for an outer plate includes a liquid crystal polymer and a plate-shaped filler, in which the amount of the plate-shaped filler is 20 parts by mass or more and 70 parts by mass or less with respect to 100 parts by mass of the liquid crystal polymer.

Abstract: A plate-shaped molded body manufacturing method is provided. The manufacturing method involves a step of injection-molding a liquid crystal polymer resin composition using a mold that satisfies the following conditions (i) to (iii). (i) The mold includes a cavity and a gate that is connected to the cavity, the cavity has a shape that corresponds to the plate-shaped molded body, and the gate is provided across approximately an entire width of one side of the cavity. (ii) The mold includes a runner that is connected to the gate, and the runner extends along approximately an entire width of the gate. (iii) In a cross section perpendicular to an extension direction of the runner, a shape of an inside space of the runner has a wedge-shaped portion in which a width of the inside space gradually decreases toward the gate.

Abstract: A foamed molded article of a liquid crystalline aromatic polyester resin composition is described. The foamed molded article includes an inner layer and an outer layer: the inner layer is a foamed layer, the outer layer is a non-foamed layer, and a weight reduction rate represented by the following formula (1) is 20% or more and 90% or less, weight reduction rate (%)=100×(dB?dA)/dB??(1) In formula (1), dB represents a true density (g/cm3) of the liquid crystalline aromatic polyester resin composition and dA represents an apparent density (g/cm3) of the foamed molded article.

Abstract: A resin composition for foam molding uses a supercritical fluid as a foaming agent. The resin composition includes a thermoplastic resin and an inorganic filler, in which a water absorption rate of the inorganic filler in atmospheric air at a temperature of 25° C. and a relative humidity of 50% is 0.05% or more and 2.0% or less, and a content of the inorganic filler with respect to 100 parts by mass of the resin composition is 1 part by mass or more and 25 parts by mass or less.

Abstract: A liquid crystalline polymer composition for foam molding using a supercritical fluid as a foaming agent. The liquid crystalline polymer composition includes a liquid crystalline polymer and a scale-like inorganic filler, in which a content of the scale-like inorganic filler is 1 part by mass or more and 20 parts by mass or less with respect to 100 parts by mass of the liquid crystalline polymer composition.

Abstract: A resin composition comprising an aromatic polysulfone, a liquid crystal polyester and a glass filler, wherein the boron oxide content, relative to the total mass of the resin composition, is less than 1.4% by mass.

Abstract: A polymer electrolyte membrane which exhibits superior high-temperature operability and a fuel cell and the like comprising the polymer electrolyte membrane are provided. In an aspect, the present invention relates to a polymer electrolyte membrane comprising a polymer electrolyte and having a first surface and a second surface, wherein the water vapor permeability coefficient from the first surface of the polymer electrolyte membrane to the second surface which is measured in a state where the first surface is exposed to a humidified environment of a temperature of 85° C. and a relative humidity of 20% and the second surface is exposed to a non-humidified environment of a temperature of 85° C. and a relative humidity of 0% is equal to or higher than 7.0×10?10 mol/sec/cm, and the breaking stress at a temperature of 80° C. and a relative humidity of 90% is equal to or greater than 20 MPa.

Abstract: It is an object of this invention to provide a catalyst ink which allows formation of catalyst layers that can adequately improve durability of fuel cells. The catalyst ink of the invention is a catalyst ink for formation of a fuel cell catalyst layer, comprising a catalyst substance, a solvent and an aromatic polymer compound having a phosphorus atom-containing functional group, wherein at least the aromatic polymer compound is dispersed, and not dissolved, in the solvent.

Abstract: A method for producing a membrane-electrode-gas diffusion layer-gasket assembly 30, having a cathode sealing step in which a cathode side gasket 6 is formed on the edges of a cathode side gas diffusion layer 4 and cathode catalyst layer 2, and an anode sealing step in which an anode side gasket 7 is formed on the edges of an anode side gas diffusion layer 5 and anode catalyst layer 3, in a membrane-electrode-gas diffusion layer assembly 20, wherein the thickness C1 of the cathode side gasket 6 used in the cathode sealing step is in the following relationship with A1 as the thickness of the cathode catalyst layer 2 and B1 as the thickness of the cathode side gas diffusion layer 4. (A1+B1)/C1?1.

Abstract: A membrane-electrode assembly, containing an electrode catalyst containing a base metal complex, in which exchange current density i0 obtained from a Tafel plot, which is related to current density and voltage, is 5.0×10?4 Acm?2 or more, and in which a Tafel slope obtained from the Tafel plot is 450 mV/decade or less; and a membrane-electrode assembly, containing catalyst layers each containing an electrode catalyst on both sides of an electrolyte membrane, in which at least one of the catalyst layers comprises a non-noble metal-based electrode catalyst, and in which the electrolyte membrane is a hydrocarbon-based electrolyte membrane.