Abstract: Disclosed are a compound for an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and of simple constitution and an organic EL device using said compound. The compound for an organic EL device has two indolocarbazole skeletons each of which is bonded to an aromatic group or two skeletons similar thereto. The organic EL device comprises a light-emitting layer disposed between an anode and a cathode piled one upon another on a substrate and said light-emitting layer comprises a phosphorescent dopant and the aforementioned compound for an organic EL device as a host material.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and simple in structure and also disclosed is a heterocyclic compound useful for the said device. Specifically, the heterocyclic compound is represented by the following general formula (I) and the organic EL device comprises an organic layer containing the said heterocyclic compound. In general formula (I), X1 and X2 respectively denote O, S, or N—R, R denotes a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group, Ar1, Ar2, Ar3, and Ar4 respectively denote a substituted or unsubstituted aryl group, Ar1, Ar2, and the nitrogen atom bonded thereto or Ar3, Ar4, and the nitrogen atom bonded thereto may form a nitrogen-containing hetero ring, and m and n respectively denote an integer of 1 or 2.

Abstract: Disclosed are an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and of simple constitution and a compound useful for the fabrication of said organic EL device. The compound for the organic EL device has an indolocarbazole structure or a structure similar thereto in the molecule wherein an aromatic group is bonded to the nitrogen atom in the indolocarbazole. The organic EL device has a light-emitting layer disposed between an anode and a cathode piled one upon another on a substrate and said light-emitting layer comprises a phosphorescent dopant and the aforementioned compound for an organic electroluminescent device as a host material.

Abstract: Disclosed is a thermosetting resin composition of excellent low-temperature curability comprising an oxetane compound and also disclosed is a cured article obtained therefrom. The thermosetting resin composition comprises an oxetane compound (A) containing two or more oxetane functional groups in the molecule represented by the following general formula (1) and a heteropolyacid (B) as essential components. A cured article obtained by heat curing of this composition shows excellent mechanical properties, electrical properties, adhesive properties, resistance to heat, moisture, and chemicals, and the like. In formula (1), R1 is a hydrogen atom, alkyl group of 1 to 6 carbon atoms, fluorine atom, fluoroalkyl group of 1 to 6 carbon atoms, allyl group, aryl group, aralkyl group, furyl group, or thienyl group.

Abstract: A resin composition for an optical waveguide is provided, which comprises: an epoxy compound represented by the following general formula (1): wherein m is 1 or a positive integer, n is 1 or a positive integer, R and R? which may be the same or different are each represented by the following formula (2) or (3), wherein c is a positive integer of 1 to 3 and each one of c may be the same or different, and X is represented by the following formula (4): wherein a is an integer of 0 to 2, and b is a positive integer of 1 to 3, and satisfy a condition of a+b=3; and a photoacid generator. The resin composition has a lower viscosity, and is excellent in flexibility and moisture absorption resistance. An optical waveguide produced by employing the resin composition is also provided.

Abstract: Disclosed are an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of driving stability, and simple in constitution and a compound for use therein. The organic electroluminescent device comprises a light-emitting layer disposed between an anode and a cathode piled one upon another on a substrate and the light-emitting layer contains a phosphorescent dopant and a compound for use in an organic electroluminescent device having two or more indolocarbazole skeletons as a host material. An example of the compound having indolocarbazole skeletons for use in the device is expressed by the following formula.

Abstract: In order to provide a flexible laminate circuit board using a surface treated copper foil satisfying all of a bonding strength of a copper foil with respect to polyimide, acid resistance, and etching property, in a flexible laminate circuit board formed by a copper foil on the surface of a polyimide resin layer, the copper foil is a surface treated copper foil formed by depositing an Ni—Zn alloy onto at least one surface of a untreated copper foil, and the Zn deposition amount in the deposited Ni—Zn alloy is 6% or more and 15% or less of the (Ni deposition amount+Zn deposition amount), and the Zn deposition amount is 0.08 mg/dm2 or more to provide a flexible cupper clad laminate.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) that utilizes phosphorescence and is improved in luminous efficiency and fully secured of driving stability. The organic EL device comprises an anode, an organic layer containing a hole-transporting layer, a light-emitting layer, and an electron-transporting layer, and a cathode piled one upon another on a substrate while the hole-transporting layer is disposed between the light-emitting layer and the anode and the electron-transporting layer is disposed between the light-emitting layer and the cathode. The light-emitting layer comprises an aluminum heterocomplex or dimeric complex of deuterated substituted or unsubstituted 2-methyl-8-hydroxyquinoline (Me8HQ-D) in which the hydrogen atoms in the methyl group of substituted or unsubstituted 2-methyl-8-hydroxyquinoline (Me8HQ) are deuterated as a host material and an organic metal complex containing at least one metal selected from groups 7 to 11 of the periodic table as a guest material.

Abstract: Provided are a hole-injecting material for an organic electroluminescent device (organic EL device) exhibiting high luminous efficiency at a low voltage and having greatly improved driving stability, and an organic EL device using the material. The hole-injecting material for an organic EL device is selected from benzenehexacarboxylic acid anhydrides, benzenehexacarboxylic acid imides, or N-substituted benzenehexacarboxylic acid imides. Further, the organic EL device has at least one light-emitting layer and at least one hole-injecting layer between an anode and a cathode arranged opposite to each other, and includes the above-mentioned hole-injecting material for an organic EL device in the hole-injecting layer. The organic EL device may contain a hole-transporting material having an ionization potential (IP) of 6.0 eV or less in the hole-injecting layer or a layer adjacent to the hole-injecting layer.

Abstract: An end-modified soluble polyfunctional vinyl aromatic copolymer, which is improved in heat resistance, thermal stability, solvent solubility, and compatibility with acrylate compounds, and a curable resin composition using the same are disclosed. The end-modified soluble polyfunctional vinyl aromatic copolymer is obtained by allowing a divinyl aromatic compound (a), a monovinyl aromatic compound (b), and an aromatic ether compound (c) to react with each other, and has, at an end, an end group derived from the aromatic ether compound and having an acrylate bond. The copolymer has a number average molecular weight Mn of 500 to 100,000, an introduction amount (c1) of the end group derived from the aromatic ether compound satisfies (c1)?1.0 (group/molecule), a molar fraction a? of a structural unit derived from the divinyl aromatic compound and a molar fraction b? of a structural unit derived from the monovinyl aromatic compound in the copolymer satisfy 0.05?a?/(a?+b?)?0.95.

Abstract: An epoxy resin possessing one or more primary hydroxyl groups and one or more epoxy groups in one molecule is useful in a photo-curing method.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) that is improved in the luminous efficiency, fully secured of the driving stability, and of a simple structure and disclosed also is a compound useful therefor. The organic EL device comprises a light-emitting layer disposed between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer comprises a phosphorescent dopant and an indolocarbazole derivative as a host material. The indolocarbazole derivative is represented by the following formula (3) wherein Ar is an aromatic group and L is a direct bond or an aromatic group.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) which can achieve high efficiency and long lifetime even when driven at low voltage. The organic El device comprises at least a light-emitting layer and an electron-transporting layer between an anode and a cathode facing each other. The electron-transporting layer consists of two layers, namely, a first electron-transporting layer and a second electron-transporting layer and the first electron-transporting layer and the second electron-transporting layer are arranged sequentially in this order from the light-emitting layer side to the cathode side. The first electron-transporting layer contains an indole derivative in which the ring nitrogen atom is substituted with an aromatic group and an aromatic ring is fused to the indole ring.

Abstract: A novel flame-retardant thermoplastic polyhydroxy polyether resin obtained by reacting at least one epoxy resin (A) selected from glycidyl esters of divalent aliphatic carboxylic acids having 15 to 64 carbon atoms or glycidyl ethers of divalent aliphatic alcohols having 15 to 64 carbon atoms with a phosphorus atom-containing divalent phenol compound (B) as essential components, wherein the component (A) accounts for 2 to 52 mol % with respect to the whole resin, the weight average molecular weight thereof is 10,000 to 200,000, and the phosphorus content thereof is 1 to 5 wt %.

Abstract: Disclosed is a water-soluble, thermally polymerizable oxetane composition essentially comprising a water-soluble oxetane compound and a heteropolyacid. The water-soluble thermally polymerizable oxetane resin composition essentially comprises (A) a water-soluble oxetane compound and (B) at least one heteropolyacid compound selected from heteropolyacids and heteropolyacid salts. The water-soluble oxetane compound may contain one or more oxetane functional groups in the molecule and one or more alcoholic OH groups in the molecule. The heteropolyacids include phosphotungstic acid, phosphomolybdic acid, silicotungstic acid, and silicomolybdic acid and mixtures thereof. The heteropolyacid salts include phosphotungstic acid salts, phosphomolybdic acid salts, silicotungstic acid salts, and silicomolybdic acid salts and mixtures thereof.

Abstract: Provided is an organic electroluminescent device which is suitable for use in full-color and multicolor panels and shows higher luminous efficiency and better driving stability than organic electroluminescent devices utilizing luminescence from the singlet state. The organic electroluminescent device comprises a substrate 1 and an anode 2, organic layers, and a cathode 8 piled one upon another on the substrate, at least one of the organic layers comprises a light-emitting layer 5 containing a host material and a dopant material, and a compound having 2 to 4 pyrazole structures represented by the following formula I (wherein Ar4 to Ar6 are independently hydrogen or substituted or unsubstituted aromatic hydrocarbon groups or aromatic heterocyclic groups) is used as said host material.

Abstract: A new lignin degradation product, a method for producing the same, and methods for producing a saccharide raw material and a monosaccharide raw material are provided. The method for producing the new lignin degradation product includes: (a first step) mixing 100 parts by mass of a powder, obtained by pulverizing a lignocellulosic raw material and defatting the resulting powder with an organic solvent, with aqueous hydrogen peroxide in an amount of 20 to 400 parts by mass in terms of hydrogen peroxide and heating the mixture for 5 to 120 minutes at a pressure of 0.1 to 1.5 MPa and a temperature of 80 to 200° C. while irradiating the mixture with microwaves; (a second step) separating insoluble matter from the aqueous hydrogen peroxide; (a third step) extracting the insoluble matter with a solvent to produce an extract; and (a fourth step) distilling the solvent away from the extract to yield a solubilized lignin as a residue.

Abstract: An organic electroluminescence device of a long emission life is obtained by stacking an anode, a hole transport layer comprising an organic compound, a light emitting layer comprising an organic compound, an electron transport layer comprising an organic compound, and a cathode, in which the light emitting layer comprises an organic host material of an aluminum chelating complex of a specific structure and a phosphorescent organic guest material.

Abstract: Disclosed are a volume phase hologram recording material having high sensitivity, high contrast, and excellent multiple recording and record holding properties and a volume phase hologram recording medium using the same. The volume phase hologram recording material comprises mainly a polymer matrix (a), a radically photopolymerizable compound (b), and a radical photopolymerization initiator (c) and the polymer matrix is a three-dimensionally crosslinked or linear polymer matrix formed from a polymer matrix-forming material containing 0.5-50 wt % of an episulfide compound (f), an epoxy compound (g), and a curing agent (h).

Abstract: Provided is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, fully secured of driving stability, and simply constructed. The EL device has a light-emitting layer disposed between an anode and a cathode stacked one upon another on a substrate and the light-emitting layer comprises a phosphorescent dopant and an indolocarbazole derivative as a host material. Examples of the indolocarbazole compounds include a compound represented by the following formula (2) or (3), wherein X is N or CH, at least one of Xs is N, and Ar1 to Ar3 each is a substituted or unsubstituted aromatic group.