Abstract: To provide an alumina-based fibrous mass having a high areal pressure and is usable as a holding material for an exhaust gas cleaners and a production process thereof; the alumina-based fibrous mass has a chemical composition containing an Al2O3 in an amount of 70% or more and less than 90% and having a total pore volume of 0.0055 mL/g or less.

Abstract: Provided is a resin composition comprising (A) an epoxy compound, (B) an epoxy resin, and (C) a photocationic polymerization initiator. Preferably, this resin composition has a moisture content of 1000 ppm or less and a chlorine content of 1000 ppm or less. This resin composition is an energy beam-curable resin composition having accurate coating properties, excellent adhesiveness, low moisture permeability, excellent adhesive durability, and excellent storage stability.

Abstract: An object of the invention is to provide a sulfur-modified chloroprene rubber composition improved in heat resistance. A sulfur-modified chloroprene rubber composition, comprising a sulfur-modified chloroprene rubber containing sulfur chemically bound thereto and sulfur not chemically bound to the sulfur-modified chloroprene rubber, wherein: the ratio of the amount of sulfur chemically bound to the sulfur-modified chloroprene rubber to the total amount of sulfur in the sulfur-modified chloroprene rubber composition (amount of chemically bound sulfur [mass %]/total amount of sulfur [mass %]) is 0.1 to 0.45; and the sulfur-modified chloroprene rubber has, at the molecular terminal, at least one structure represented by the following General Formula (1) or (2): —S—C(?S)—O—R1 . . . (1) (in General Formula (1), R1 represents an alkyl group having 1 to 4 carbon atoms) or —S—R2 . . . (2) (in General Formula (2), R2 represents an alkyl group having 8 to 20 carbon atoms).

Abstract: Provided are a multilayer sheet, a backsheet for solar cell, and a solar cell module superior in weather resistance, heat resistance, moisture resistance, flame resistance, and also interlayer adhesion. A multilayer sheet 10, comprising a first resin layer 1 of a polyphenylene ether-containing resin composition, a second resin layer 2 of a polyvinylidene fluoride-based resin composition, and an adhesion resin layer 3, which is placed between the first and second resin layers, of one or more resins selected from acrylic resins and polymers having a structural unit derived from conjugated diene, wherein the adhesion resin layer 3 is fused both to the first and second resin layers 1 and 2. In addition, a backsheet comprising the multilayer sheet 10 is placed on and bonded to the non-light-receiving surface of a solar cell module, to give a solar cell module.

Abstract: This invention provides a means to produce improved sulfur-modified chloroprene rubber for use in making products with improved heat resistance. The products of the invention require sulfurization of the chloroprene followed by plasticization. A preferred plasticizer is tetraethylthiuram.

Abstract: Provided is a method of producing a polyvinyl alcohol resin, wherein the impurities in the resin are removed efficiently with a small amount of a washing liquid. A polyvinyl alcohol obtained after a polymerization step (step S1) and a saponification step (step S2) is washed with a washing liquid consisting of methyl acetate: 1 to 40 parts by mass, methanol: 50 to 98.9 parts by mass and water: 0.1 to 10 parts by mass in a washing step (step S3). The solid matter concentration of the slurry containing the washing liquid then is 1 to 30 mass %.

Abstract: A crosslinking reaction and a reaction for reducing molecular weight that take place in a hyaluronic acid-methotrexate conjugate upon irradiation with light are suppressed to improve the photostability of the conjugate. Specifically, a substance having a quenching effect and/or a radical scaveng effect is added to a pharmaceutical composition containing the hyaluronic acid-methotrexate conjugate.

Abstract: Provided are a chloroprene rubber that is less adhesive to rolls and gives a vulcanized product superior in physical properties, a production method thereof, a chloroprene rubber composition and a vulcanized product thereof. A chloroprene rubber comprising a steroid skeleton-containing compound. The chloroprene rubber may contain a steroid skeleton-containing compound in an amount of 0.01 to 1 mass %. A vulcanized product is prepared by vulcanizing a composition containing the chloroprene rubber. The chloroprene rubber can be prepared, for example, by emulsion-polymerizing chloroprene alone or chloroprene and other monomers in combination in the presence of a rosin containing a steroid skeleton-containing compound.

Abstract: Provided is a method for disassembling a bonded body, whereby the bonded body can be easily disassembled and peeled. The method for disassembling a bonded body formed by bonding substrates with an adhesive comprises irradiating light having a wavelength of 280 nm or more such that irradiation energy is 1000-5000000 mJ/cm2 at a wavelength of 365 nm while heating the bonded body to 150° C.-300° C.

Abstract: To provide an acrylic rubber composition and its vulcanized product, having excellent workability and an excellent balance of the vulcanization properties, the reduction of scorching, the rubber mechanical properties, the compression set and the heat resistance. An acrylic rubber composition comprising a carboxy group-containing acrylic rubber, a novolac phenol resin salt of a diazabicycloalkene compound and a polyamine compound. Particularly, the diazabicycloalkene compound is preferably 2,3,4,6,7,8,9,10-octahydropyrimido(1,2-a)azepine or 2,3,4,6,7,8-hexahydropyrrolo(1,2-a)pyrimidine, and the polyamine compound is preferably an aromatic polyamine or an aliphatic polyamine.

Abstract: Provided is a method for manufacturing a translucent rigid substrate laminate which can improve a thickness precision while decreasing the risk of fractures. In the method for manufacturing a translucent rigid substrate laminate according to the present invention, translucent rigid substrates are placed opposite to each other such that bonding surfaces thereof are parallel to each other, both rigid substrates are brought toward each other while being kept parallel, the both rigid substrates are preliminarily bonded using a photo-curable fixing agent, the bonded translucent rigid substrates are roll-pressed, and the fixing agent is then cured.

Abstract: A block copolymer composition with a good balance of physical properties suitable for various types of packaging such as food product containers, beverage containers, industrial containers and blister packs, having excellent transparency, gloss, strength, rigidity and formability, having excellent anti-blocking properties and anti-sticking properties, and excelling in the aforementioned properties even when used in mixture with vinyl aromatic hydrocarbon-type polymers is offered.

Abstract: Provided is a curable composition which contains: an organic peroxide encapsulated in microcapsules which further contains a plasticizer; an accelerator which reacts with the organic peroxide to accelerate polymerization; (meth)acrylate compounds which may contain a (meth)acrylate having a carboxylic group and a (meth)acrylate having an alicyclic hydrocarbon; and a multifunctional (meth)acrylate different from the (meth)acrylate having a carboxylic group. The curable composition exhibits a quick curing rate.

Abstract: Provided is a multilayer adhesive sheet which enables easy separation between an adhesive layer and a die attach film during the pick-up even in cases where an acrylate ester copolymer is used in the die attach film, thereby making the pick-up work of semiconductor chips after the dicing easy. The multilayer adhesive sheet comprises a base film, an adhesive layer that is disposed on one surface of the base film, and a die attach film that is disposed on an exposed surface of the adhesive layer. The adhesive that constitutes the adhesive layer contains: (A) a (meth)acrylate ester copolymer; (B) an ultraviolet polymerizable compound; (C) a multifunctional isocyanate curing agent; (D) a photopolymerization initiator; and (E) a silicone polymer.

Abstract: An electronic component packaging sheet formed of a styrene resin composition includes: (A) 29-65 mass parts of a styrene-conjugated diene block copolymer; (B) 51-15 mass parts of a polystyrene resin; and (C) 20-9 mass parts of an impact resistant polystyrene resin. Components (A)-(C) each have a weight average molecular weight (Mw) within a specified range.

Abstract: An object of the present invention is to provide a phosphor that is combined with a blue LED to achieve white light at a low color temperature as if singly, has a broad fluorescence spectrum for excellent color rendering properties, has a high luminous efficiency, is thermally and chemically stable like conventional nitride-based phosphors, and has a small decrease in luminance at high temperatures. Another object of the present invention is to provide a light emitting device using such a phosphor. The present invention relates to a ?-sialon that is expressed by the general formula, Si6-zAlzOzN8-z:Eu (0<z<4.2). In the ?-sialon, P2/P1 is not lower than 0.5 and not higher than 1000 (P1 representing the height of an absorption line appearing in the region where g is 2.00±0.02 in a first derivative spectrum obtained by an electron spin resonance technique at 25° C., P2 representing the difference between the maximum value and the minimum value in a spectrum on the lower magnetic field side of P1).

Abstract: The present invention discloses a laminated sheet for packaging electronic components comprising a front surface layer, a center core layer and a rear surface layer, wherein the front surface layer and the rear surface layer each contains a rubber-modified styrenic copolymer (A) having a graft ratio of grafted rubber of 30 to 50%, a grafted rubber particle diameter of 0.1 to 0.5 ?m and a butadiene content of 5 to 25% by weight, and polyetheresteramide (B), and the center core layer contains a rubber-modified styrenic copolymer (C) having a graft ratio of grafted rubber of 70 to 90%, a grafted rubber particle diameter of 0.4 to 1.0 ?m, and a butadiene content of 5 to 15% by weight, and 5 to 50% by weight of a recycled material of this laminated sheet.

Abstract: Provided is a method of processing a translucent rigid substrate laminate, whereby it becomes possible to maintain peeling properties and good appearance of the translucent rigid substrate laminate during the processing of the translucent rigid substrate laminate even when a process such as transportation and storage is included in the method.

Abstract: Provided are an ?-SiAlON activated by Eu, which can realize a higher luminance in a light-emitting device such as a white LED, and also a light-emitting device. The ?-SiAlON is represented by the general formula: (M)x(Eu)y(Si)12-(m+n)(Al)m+n(O)n(N)16-n (wherein M denotes one or more elements including at least Ca, selected from the group consisting of Li, Mg, Ca, Y and lanthanide elements (except for La and Ce)), and is constituted by an ?-SiAlON having Eu in the form of a solid solution. The 50% mean area diameter of primary particles of the ?-SiAlON is 5 ?m or more, and the ratio of the 50% mean area diameter of primary particles to the 50% mean area diameter of secondary particles of the ?-SiAlON is preferably 0.56 or more.

Abstract: Provided are an apparatus for removing residual monomers and a method of producing a polyvinyl alcohol resin that can prevent drift of the organic solvent gas and residual of the polymerization solution on the trays and permits efficient removal of the unreacted monomers from the polymerization solution. An apparatus 1 for removing residual monomers having a column main body and valve trays 2 having multiple gas blowout ports each having openings only in a direction perpendicular to the flow direction of the polymerization solution 4 or openings directed downward in the flow direction of the polymerization solution, which are installed in multiple stages in the column main body is used in a monomer-removing step of removing monomers in a polymerization solution 4 by bringing an organic solvent gas, such as methanol gas, into contact with a polymerization solution 4 obtained from a polymerization reactor 3.