Abstract: Provided are a phenoxy resin having excellent heat resistance, low hygroscopicity, and solvent solubility, a resin composition using the same, and a cured object obtained therefrom. The phenoxy resin is represented by Formula (1) below and has an Mw of 10,000 to 200,000: where, X represents a divalent group, and includes, essentially, a group having a cyclohexane ring structure and a group having a fluorene ring structure. Y represents a hydrogen atom or a glycidyl group. n is the number of repetitions and an average value thereof is 25 to 500.

Abstract: Provided is a polyurethane-modified epoxy resin having favorable processing operability in casting, impregnation, or the like in a composition state, a method for producing the same, and a composition of the same. Provided is a low-concentration polyurethane-modified epoxy resin including: a polyurethane having a secondary hydroxyl group-containing bisphenol-based epoxy resin that has an epoxy equivalent of 150 to 200 g/eq and a hydroxyl equivalent of 2,000 to 2,600 g/eq, added to both terminals and/or a single terminal thereof, in which the polyurethane is a modified product of the epoxy resin that is modified with a middle- and high-molecular-weight polyol compound having an Mn of 200 or larger, a polyisocyanate compound, and a low-molecular-weight polyol compound as a chain extender having an Mn of less than 200, and the epoxy resin is used in an amount of 68 to 92 weight % based on a total amount of the components.

Abstract: Aluminum nitride particles which are excellent in high thermal conductivity and useful as a filler for a heat dissipating material and which have good fluidity for improving the fillability, that is, spherical AlN particles containing Zr atoms with respect to Al atoms in an amount of a molar ratio Zr/Al=4.0×10?4 to 4.2×10?2, having an AlN conversion rate of 70.0% or more, and having a circularity of 0.85 to 1.00.

Abstract: Provided is a thermally activated delayed fluorescence organic EL device having high emission efficiency and a long lifetime. An organic EL device comprising light emitting layers between an anode and a cathode opposite to each other; wherein at least one of the light emitting layers contains, as a thermally activated delayed fluorescence material, a compound in which a boron-containing electron acceptor backbone is linked with an electron donor backbone having a specific fused ring structure; and the compound is represented by the following general formula (1) where X1 is O or S.

Abstract: An adhesive resin composition for bonding two adherends of different materials together, the composition comprising a phenoxy resin and a polyester elastomer at a weight ratio (phenoxy resin:polyester elastomer) ranging from 20:80 to 80:20, wherein the area of portions where solid matter forms a phase separation structure attributed to both of the phenoxy resin and the polyester elastomer is at most 1 area % of an entire observation area in an elastic modulus phase image of a plurality of arbitrarily defined 10-?m square regions observed by an atomic force microscope (AFM) to which a probe having a tip radius of curvature of 10 nm at 25° C. is attached.

Abstract: To provide an organic electroluminescent device having long lifetime characteristics while having a low driving voltage and high power efficiency. The organic electroluminescent device includes one or more light-emitting layers between an anode and a cathode opposed to each other, wherein at least one of the light-emitting layers contains a host material including a first host material, a second host material and a third host material, and a light-emitting dopant material. A LUMO energy of the first host material is ?1.95 eV or less, and LM2?LM3?LM1 is satisfied under the assumption that LUMO energies of the first host material, the second host material and the third host material are LM1, LM2 and LM3, respectively.

Abstract: The electrically conductive resin composition may contain matrix resin, coke powder, and carbon fiber. The volume mean particle diameter of the coke powder may be not less than 1 ?m and not more than 500 ?m. The content percentage of the coke powder in the electrically conductive resin composition may be not less than 1 wt % and not more than 60 wt %. The aspect ratio of the carbon fiber may be not less than 3 and not more than 1700. The content percentage of the carbon fiber in the electrically conductive resin composition may be not less than 0.5 wt % and not more than 10 wt %.

Abstract: To provide an epoxy resin composition that exhibits excellent low dielectric properties and that is excellent in copper foil peel strength and interlayer cohesion strength in a printed-wiring board application, a phenol resin and an epoxy resin for providing the composition, and a method for producing such a resin. A phenol resin containing a dicyclopentenyl group and represented by the following general formula (1): wherein each R1 independently represents a hydrocarbon group having 1 to 8 carbon atoms; each R2 independently represents a hydrogen atom or a dicyclopentenyl group, and at least one R2 is a dicyclopentenyl group; i is an integer of 0 to 2; and n represents the number of repetitions and an average value thereof is a number of 10 to 10.

Abstract: Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime. This organic EL device includes one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers has a difference between excited singlet energy (Si) and excited triplet energy (Ti) of 0.20 eV or less and includes a light emitting dopant represented by the following formula (5), a first host selected from biscarbazole compounds, and a second host selected from N-containing 6-membered ring compounds, wherein X3 is N—Ar4, O, or S and at least one X3 is N—Ar4.

Abstract: To provide an organic EL device having a low driving voltage and also high efficiency and high driving stability, and a compound suitable therefor. The compound for an organic EL device has a structure in which a nitrogen-containing 6-membered ring group like triazine is directly bonded to one of two N-positions in an indolocarbazole ring and a nitrogen-containing 6-membered ring group is bonded to other thereof via an aromatic hydrocarbon group like phenylene. The organic EL device of the present invention contains the compound for an organic EL device and a biscarbazole compound as hosts in a light-emitting layer.

Abstract: A resin-metal composite to be used as a marker in an immunoassay, said resin-metal composite comprising a resin particle and metal particles and having the following constitution (A) or constitution (B): (A) the average particle size of the resin-metal composite exceeding 300 nm; or (B) the average particle size of the metal particles being in the range of more than 20 nm and less than 70 nm. It is preferred that a part of the metal particles are two- or three-dimensionally distributed in the surface layer part of the resin particle, a part of the three-dimensionally distributed metal particles are partly exposed to the outside of the resin particle, and a part of the remainder particles are enclosed in the resin particle.

Abstract: To provide a thermosetting resin composition that provides a cured product excellent in low-dielectric properties, high heat resistance, high adhesiveness, and the like. The thermosetting resin composition includes an aromatic polyhydroxy compound represented by the following formula (1), and a maleimide compound. In the formula, R1 independently represents a hydrocarbon group having 1 to 8 carbon atoms, R2 independently represents a hydrogen atom or a dicyclopentenyl group, and at least one R2 is a dicyclopentenyl group; and n represents the number of repetitions and an average value thereof is a number of 1 to 5.

Abstract: To provide an epoxy resin composition that exhibits excellent low-dielectric properties and that is excellent in copper foil peel strength and interlayer cohesion strength in a printed-wiring board application. An epoxy resin composition containing an epoxy resin and a curing agent, wherein the curing agent is partially or fully a polyvalent hydroxy resin represented by the following general formula (1). Each R1 independently represents a hydrocarbon group having 1 to 8 carbon atoms, each R2 independently represents a hydrogen atom or a dicyclopentenyl group, and at least one R2 is a dicyclopentenyl group; and n represents a number of repetitions of 0 to 5.

Abstract: To provide an epoxy resin composition that exhibits excellent low-dielectric properties and that is excellent in copper foil peel strength and interlayer cohesion strength in a printed-wiring board application. An epoxy resin composition containing an epoxy resin and a curing agent, wherein the epoxy resin is partially or fully an epoxy resin represented by the following general formula (1). Each R1 represents a hydrocarbon group having 1 to 8 carbon atoms, each R2 represents a hydrogen atom or a dicyclopentenyl group, and at least one R2 is a dicyclopentenyl group; and m represents a number of 0 to 5.

Abstract: Disclosed is a polyurethane-modified epoxy resin composition capable of satisfying both high toughness and high elasticity. This epoxy resin composition is an epoxy resin composition, in which (A) a polyurethane-modified epoxy resin having a polycarbonate structure in the molecule and having a urethane modification rate of 20 to 60% by weight, (B) a non-polyurethane-modified epoxy resin that is liquid at 30° C., (C) a solid epoxy resin having a glass transition temperature or melting point of 50° C. or higher and (D) an amine-based curing agent that is dicyandiamide or a derivative thereof are as essential components, and 20.0 to 50.0% by weight of (A), 0.1 to 50.0% by weight of (B) and 0.1 to 50.0% by weight of (C) are contained relative to the total of (A) to (D).

Abstract: Provided is a resin material showing a high thermal conductivity and having high heat resistance while having a low dielectric constant and a low dielectric loss tangent. The material is a polyfunctional vinyl resin, which is represented by the following general formula (1): where R1s each independently represent a hydrocarbon group having 1 to 8 carbon atoms, R2s each independently represent a hydrogen atom or a dicyclopentenyl group, and at least one thereof represents a dicyclopentenyl group, Xs each independently represent a hydrogen atom or a vinyl group-containing aromatic group represented by the formula (1a), and at least one thereof represents a vinyl group-containing aromatic group, “n” represents a number of repetitions, and the average thereof is a number of from 1 to 5, and Ar represents an aromatic ring.

Abstract: Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime. This organic EL device includes one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers includes a first host selected from indolocarbazole compounds, a second host selected from the compounds represented by the following general formula (2), and, as a light emitting dopant, a polycyclic aromatic compound represented by the following general formula (3) or a polycyclic aromatic compound represented by the general formula (3) as a substructure, wherein Y4 is B, P, P?O, P?S, Al, Ga, As, Si—R4 or Ge—R5, and X4 is O, N—Ar4, S or Se.

Abstract: To provide an organic EL device having high efficiency and extended lifetime while having a low driving voltage, and a compound suitable therefor. A material for an organic electroluminescent device of the present invention is comprised of an indolocarbazole compound represented by the following general formula (1): wherein a ring A is a heterocycle represented by formula (1a); Ar1 and Ar2 each represent an aromatic hydrocarbon group, an aromatic heterocyclic group, or a linked aromatic group in which two to five of these aromatic rings are linked to each other; L1 represents an aromatic hydrocarbon group or an aromatic heterocyclic group; L2 represents an aromatic heterocyclic group; Ar3 represents a carbazolyl group; and a+b+c?1.

Abstract: A high-strength steel foil for the positive and negative electrode current collectors of nickel-hydrogen secondary batteries which uses a light weight and economical steel foil and which is thin and strong and has excellent rust resistance and resistance to metal ion leaching. Also, a high-strength steel foil for the positive and negative electrode current collectors of nickel-hydrogen secondary batteries which has excellent elongation. The Ni-plated steel foil for hydrogen secondary battery current collectors comprises, by mass %, C: 0.0001 to 0.0200%, Si: 0.0001 to 0.0200%, Mn: 0.005 to 0.300%, P: 0.001 to 0.020%, S: 0.0001 to 0.0100%, Al: 0.0005 to 0.1000%, N: 0.0001 to 0.0040%, one or both of Ti and Nb: 0.800% or less respectively, and a balance of Fe and impurities. The Ni-plated steel foil has an Ni plating layer on both surfaces. The thickness of the Ni plating layer on both surfaces of the Ni-plated steel foil is greater than or equal to 0.

Abstract: Provided is a blue light emitting organic EL device having high emission efficiency and a long lifetime. This organic EL device comprises one or more light emitting layers between an anode and a cathode opposite to each other, wherein at least one of the light emitting layers contains a first host, a second host, and a light emitting dopant; the first host is a carbazole compound or a bicarbazole compound; the second host is an indolocarbazole compound; and the light emitting dopant is a polycyclic aromatic compound represented by the general formula (4) or a polycyclic aromatic compound having this structure as a partial structure. In the formula, Y4 is B, P, P?O, P?S, AL, Ga, As, Si—R4, or Ge—R41, and X4 is O, N—Ar4, S, or Se.