摘要:
An organic electroluminescence device including an anode, an emitting layer, a blocking layer, an electron-injecting layer and a cathode in sequential order; wherein the emitting layer contains a host and a dopant which gives fluorescent emission of which the main peak wavelength is 550 nm or less; the affinity Ad of the dopant is smaller than the affinity Ah of the host; the triplet energy E T d of the dopant is larger than the triplet energy E T h of the host; the triplet energy E T b of the blocking layer is larger than E T h ; and the blocking layer includes an aromatic hydrocarbon compound.
摘要:
After introducing gas into a cavity (113) of a clamped die to boost a pressure therein, a resin material (X) containing a foaming agent is injected. After forming a skin layer, at the same time as a start of a core-back operation for foaming the resin material (X) or after the core-back operation, gas in the cavity (113) is vacuum-suctioned to make a pressure in the cavity (113) less than the atmospheric pressure. By cooling and solidifying, an injection foam molded article is obtained. Before complete solidification, gas between the resin material (X) and an inner surface of the die (110) is reliably discharged out of the cavity (113), so that surface recesses and generation of swirl marks due to gas accumulation can be prevented.
摘要:
The present invention provides an aromatic polycarbonate resin product for producing optical disc substrates of high reliability at high molding yield. The aromatic polycarbonate resin for optical disc substrates is produced by adding 0.015 to 0.05 parts by mass of a C 14 -C 30 fatty acid monoglyceride to 100 parts by mass of an aromatic polycarbonate resin, adding water having an electric conductivity, as measured at 25°C, of 1 µS/cm or less to the resin, the water content of the resin being controlled to 0.05 to 0.3 mass%, melt-extruding the water-added resin, cooling, and cutting to form pellets, the resin having a viscosity average molecular weight (Mv) of 10,000 to 20,000.
摘要:
A method for recording and erasure of images using a rewritable thermal label of the non-contact type which enables complete elimination of residual images after the erasure and repeated rewriting. The absorptivity of laser light used for the recording with the surface of the label is 50% or greater, the laser light irradiating the surface of the label for the recording has a wavelength of 700 to 1,500 nm and an amount of energy of irradiation of 5.0 to 15.0 mJ/mm 2 , the product of the amount of energy of irradiation of the laser light and the absorptivity of the laser light during the recording is 3.0 to 14.0 mJ/mm 2 , and the product of the amount of energy of irradiation of the laser light and the absorptivity of the laser light with the surface of the label during the erasure is 1.1 to 3.0 times as great as the corresponding product during the recording.
摘要:
There is disclosed an overlaminating adhesive film comprising a transparent film, an adhesive layer and a release material successively laminated in this order, wherein said release material has a surface contacting with the adhesive layer, said surface having a centerline average surface roughness of 0.5 µm or lower; an adhesive forming said adhesive layer has a pH of 7.2 to 8.5 in a solution state before applied, and is an acrylic emulsion-type adhesive having an average particle size of 200 nm or smaller; and a monomer component used for production of said adhesive includes an alkoxysilane group-containing unsaturated monomer in which each alkoxy group has 1 to 4 carbon atoms, but includes no hydroxy-containing unsaturated monomer. The overlaminating adhesive film of the present invention exhibits a good water resistance and is free from deterioration in its transparency due to lifting or bubbles when laminated on an adherend, and further prevents an ink-jet printed surface over which the adhesive film is laminated, from suffering from ink bleeding even when the printed surface is allowed to stand under humidified conditions.
摘要:
A perfluoroadamantyl acrylate compound which is highly useful as a raw material for functional resins, etc.; and an intermediate therefore. The perfluoroadamantyl acrylate compound comprises perfluoroadamantane having a CH 2 = C(R)COO group( wherein R is a hydrogen atom, a methyl group or a trifluoromethyl group) at the 1-position, at each of the 1- and 3-positions, at each of the 1-,3- and 5-positions, at each of the 1-,3-,5- and 7-positions, or at the 2-position.
摘要:
There is disclosed a process for producing an α-olefin oligomer by subjecting an α-olefin to oligomerization reaction in the presence of a catalyst and an organic solvent which comprises the step of spraying a solvent containing the organic solvent in the form of a linear or bar-like pressure fluid toward a wall surface of a vapor phase portion of a reactor from a nozzle fitted within a space of the vapor phase portion of the reactor to conduct the oligomerization reaction while cleaning the wall surface of the vapor phase portion of the reactor. In the production process of the present invention, it is possible to effectively prevent deposition of polymers onto the wall surface of the vapor phase portion of the reactor and stably operate the reactor for a long period of time.
摘要:
A compound is shown by the following formula (1).
wherein I, m, and n are independently an integer from 1 to 3, Ar 1 to Ar 4 are independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroaryl group having 5 to 30 ring atoms, Ar 5 , Ar 6 , and Ar 7 are independently a substituted or unsubstituted arylene group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heteroarylene group having 5 to 30 ring atoms, and p is an integer from 0 to 2, and Ar 6 and N are bonded via a single bond when p is 0, provided that at least one of Ar 1 to Ar 4 is substituted with a substituted silyl group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 10 carbon atoms, and at least one of Ar 1 to Ar 4 is substituted with a cyano group.
摘要:
A nitrogen-containing aromatic heterocyclic derivative represented by the following formula, wherein X 1 to X 3 are a single bond, CRaRb, NRc, an oxygen atom or a sulfur atom, and when all of X 1 to X 3 is a single bond, at least one of Ara, Arb and Arc is an aryl group having 6 to 20 ring carbon atoms substituted with a heteroaryl group, an aryloxy group or a heteroaryloxy group, or a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms.
摘要:
An organic electroluminescence device includes an anode, a cathode, and an organic thin-film layer interposed between the anode and the cathode, in which the organic thin-film layer includes an emitting layer at least containing a first host, a second host and a luminous dopant, the first host is a compound having one or more carbazolyl groups and one or more nitrogen-containing heterocyclic groups in a molecule, and the second host is a compound represented by the following formula (1) or (2).