Abstract: A lubricating oil composition for a gas engine containing: a base oil (A), at least one overbased calcium detergent (B) selected from the group consisting of calcium salicylate (B1) and calcium phenate (B2), alkenyl succinimide (C), and a hindered amine-based antioxidant (D), where the content (X) of calcium atoms derived from the component (B) is less than 0.090% by mass based on the total amount of the lubricating oil composition; the content (Y) of calcium carbonate contained in the component (B) is 0.060% by mass or more based on the total amount of the lubricating oil composition; the content of boron atoms derived from the component (C) is less than 0.020% by mass based on the total amount of the lubricating oil composition, and the content of the component (D) is more than 0.20% by mass based on the total amount of the lubricating oil composition.

Abstract: A polymer ion exchange membrane including an ion exchange resin (A) having a basic site density DA and an ion exchange resin (B) having a basic site density DB, wherein a difference (DA—DB) between the basic site density DA and the basic site density DB is 0.3 mmol/cm3 or more.

Abstract: A compound represented by the following general formula (1), where Ar1, A, and B are as defined in the description. An organic electroluminescent device containing a cathode, an anode, and organic layers intervening between the cathode and the anode, where the organic layers include a light emitting layer, and where at least one layer of the organic layers contains the compound.

Abstract: An organic electroluminescence device may have good organic electroluminescence device performance by including a light emitting layer, a first electron transporting layer, and a second electron transporting layer from an anode toward a cathode. The first electron transporting layer may include a first compound of formula (1): A-(L)n-Ar—CN??(1).

Abstract: A method for producing a lithium compound, by which a high purity lithium compound can be produced from low-grade lithium carbonate containing impurities, such as salt water. The method includes: mixing lithium carbonate, an acid containing an organic acid, and water in a reaction tank 1 to produce an aqueous organic acid lithium solution containing an organic acid lithium; mixing the organic acid lithium and a metal hydroxide in a reaction tank 2 to produce an aqueous lithium hydroxide solution; and returning an organic acid, which is regenerated by using an electrochemical device from an organic acid metal by-produced by producing the aqueous lithium hydroxide solution to the reaction tank 1 and using the regenerated organic acid as the organic acid. An apparatus for producing a lithium compound, including the reaction tank 1, the reaction tank 2, the electrochemical device, and a return pipe, which each have a specific function.

Abstract: A lubricating oil composition, containing a base oil (A) that satisfies the following requirements (A-1) to (A-4), and a polymer (B) that satisfies the following requirements (B-1) and (B-2): (A-1): a 100° C. kinematic viscosity is 2.0 mm2/s or more and less than 7.0 mm2/s, (A-2): a viscosity index is 100 or more, (A-3): a content of cycloparaffin is 35.0% by volume or less based on a total volume of the base oil (A), (A-4): an aromatic content (% CA) is less than 1.0, (B-1): a ratio of a mass-average molecular weight (Mw) to a number-average molecular weight (Mn), [Mw/Mn] is 1.0 or more and less than 6.0, (B-2): a ratio of a peak integral value (I10) at a chemical shift 10.0 to 11.0 ppm to a peak integral value (I14) at a chemical shift 13.5 to 14.5 ppm, as determined in 13C-NMR analysis, [I10/I14] is 0.05 or more.

Abstract: An organic electroluminescence device may include an anode, a cathode, and an emitting layer provided between the anode and the cathode, in which the emitting layer contains a delayed fluorescent compound M2 and a compound M3 of formula (1) wherein A is a group of formula (11A), (11B)) (11C), (11D), (11E), and/or (11F) and Y1 is O or S. The compound M3 and the compound M2 may be different in structure.

Abstract: A lubricating oil composition, including a base oil (P) and a copolymer (X). The copolymer (X) contains the following structural units (a) to (c): structural unit (a): a structural unit derived from a monomer (A) having a (meth)acryloyl group and a linear or branched alkyl group having 6 to 24 carbon atoms, structural unit (b): a structural unit derived from a monomer (B) having a (meth)acryloyl group and a polar group, and structural unit (c): a structural unit derived from a monomer (C) having a polymerizable functional group and a cyclic structural group. The copolymer (X) has a mass-average molecular weight (Mw) of 5,000 to 50,000, a content of the copolymer (X) in terms of resin content is 0.10% by mass to 2.5% by mass based on the total amount of the lubricating oil composition, and the lubricating oil composition has a 100° C. kinematic viscosity of 8.2 mm2/s or less.

Abstract: A grease composition, containing a base oil (A), a urea-based thickener (B), and melamine cyanurate (C). Particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I): the particles have an area-based arithmetic average particle diameter of 2.0 ?m or less, as measured by a laser diffraction/scattering method.

Abstract: A quench oil may be excellent in thermal stability and may be capable of retaining the brightness for a prolonged period of time. Such a quench oil may contain a base oil containing a mineral oil (A), the mineral oil (A) having a 40° C. kinematic viscosity of 100 to 600 mm2/s and a sulfur content of 0.10 to 0.20% by mass, the base oil having a content of the mineral oil (A) of more than 0.5% by mass, based on the total amount of the base oil.

Abstract: A grease composition, containing a base oil (A), a urea-based thickener (B), and a polymer compound (C). The particles that make up the urea-based thickener (B) in the grease composition satisfy the following requirement (I): the particles have an arithmetic average particle diameter on an area basis as measured by a laser diffraction/scattering method of 2.0 ?m or less, and the polymer compound (C) has a number average molecular weight (Mn) of 30,000 or more and a molecular weight distribution (Mw/Mn) of 2.20 or less.

Abstract: A photoelectric conversion element includes a photoelectric conversion portion, a first infrared emission layer that is formed on the photoelectric conversion portion and includes a first material selected from one or more of Y2O3, HfO2, and ZrO2, and a second infrared emission layer that is formed on the first infrared emission layer and includes a second material selected from SiO2 or Al2O3.

Abstract: An organic electroluminescence device includes: an anode; a cathode; a first emitting unit including a first emitting layer and a first hole transporting zone; a first charge generating layer; and a second emitting unit including a second emitting layer, in which the first emitting unit, the first charge generating layer, and the second emitting unit are provided between the anode and the cathode in this order from the anode, the first hole transporting zone is provided between the anode and the first emitting layer, the first emitting layer contains a compound represented by a formula (1) below, and a thickness d1 of the first hole transporting zone is 60 nm or less. In the formula (1): at least one of R1 to R8 is -L13-Ar13; L11 to L13 are each independently a single bond, an arylene group or the like; and R1 to R8 not being -L13-Ar13 are each independently a hydrogen atom or the like.

Abstract: A compound represented by formula (1) provides a high performance organic electroluminescence device and a novel material for realizing such an organic electroluminescence device: wherein R1 to R6, a to f, L1 to L3, and Ar are as defined in the description.

Abstract: A compound represented by the following general formula (1), where Ar1, Ar2, L, and p are as defined in the description, and A is a group represented by formula (2), where HAr2, m, n, L2, and * are as defined in the description, and HAr1 is a group represented by formula (3), where Y1, X1 to X8, *a, and ** are as defined in the description. An organic electroluminescent device containing the compound, and an electronic device including the organic electroluminescent device is further disclosed.

Abstract: A garnet compound represented by a general formula (I): Ln3In2Ga3-XAlXO12??(I) (in the formula, Ln represents one or more metal elements selected from La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; and X satisfies an expression 0?X<3).

Abstract: A polyetheretherkenote comprising a repeating unit represented by the following formula (1) and a terminal structure represented by the following formula (2):

Abstract: An electrode material containing a carrying body and an anion exchange resin. The carrying body includes a conductive carrier and a catalyst, the catalyst is supported on the conductive carrier, and the catalyst includes one or a plurality of particles selected from a metal complex, a metal, and an inorganic compound. The anion exchange resin covers a part or all of a surface of the carrying body, the anion exchange resin includes an ionomer containing one or a plurality of groups selected from a primary amino group, a secondary amino group, a tertiary amino group, and a quaternary ammonium group, and a basic site density of the ionomer is 2.0 mmol/cm3 or more and 5.0 mmol/cm3 or less.

Abstract: A lubricating oil composition containing a base oil (A), a molybdenum-based friction modifier (B), and a benzotriazole-based compound (C). The molybdenum-based friction modifier (B) contains a compound (B1) represented by the following general formula (b1): R1-R4 and X1-X4 are as defined in the disclosure. A content of the benzotriazole-based compound (C) is 0.03 mass % or less based on a total amount of the lubricating oil composition, and a kinematic viscosity at 100° C. of the lubricating oil composition is 9.3 mm2/s or less.

Abstract: A photoelectric conversion element includes a photoelectric conversion portion, and a proton beam shielding layer that is formed on the photoelectric conversion portion and shields the photoelectric conversion portion from a proton beam. A product of an electron density and a film thickness of the proton beam shielding layer is 5×1020 (cm?2) or more.