Abstract: An absolute thickness distribution cannot be accurately calculated with a conventional technique. A sensor device is provided that includes a plurality of magnetic sensors arranged to face an outer circumference surface of a pipeline and ultrasonic sensors arranged to face the outer circumference surface and measure a thickness of the pipeline in a measurement region in which the plurality of magnetic sensors measure a magnetic field, the ultrasonic sensors being less than the plurality of magnetic sensors.

Abstract: An insulation wire 10 according to the invention includes: a conductor 11 of any shape; an insulation film 12 made of a first thermoplastic resin that is formed around the conductor 11; and a self-bonding layer 13 made of a second thermoplastic resin that is formed around the insulation film 12 and has a self-bonding property, wherein the first thermoplastic resin contains at least one of polyphenylene sulfide and polyether ether ketone, and wherein the second thermoplastic resin contains a thermosetting resin and an inorganic filler.

Abstract: An insulation wire includes a conductor, a first insulating layer formed in an outer surface of the conductor, and a second insulating layer formed in an outer surface of the first insulating layer. In the insulation wire, the first insulating layer is a thermoplastic resin layer that is made of polyphenylene sulfide or polyether ether ketone, and the second insulating layer is a thermosetting resin layer.

Abstract: Etching is performed through the following process. A substrate is loaded into a processing chamber and mounted on a mounting table therein. Then, in the state where a ring member at least a surface of which is made of a same material as a main component of an etching target film is provided to surround the substrate, a processing gas is injected in a shower-like manner from a gas supply unit oppositely facing the substrate and the etching target film is etched by using a plasma of the processing gas; and evacuating the inside of the processing chamber through an exhaust path. Through this process, unbalanced distribution of plasma active species in the vicinity of a circumferential edge portion of the substrate can be suppressed.

Abstract: Provided are an insulated wire which is excellent in heat resistance and pressure resistance, and a rotary electric machine which uses the same. An insulated wire includes an insulating resin layer that is formed on an outer periphery of a conductor, in which the insulating resin layer has a thermoplastic phenoxy resin, an epoxy resin, a cross-linking agent, an inorganic filler, and fine rubber particles.

Abstract: Etching is performed through the following process. A substrate is loaded into a processing chamber and mounted on a mounting table therein. Then, in the state where a ring member at least a surface of which is made of a same material as a main component of an etching target film is provided to surround the substrate, a processing gas is injected in a shower-like manner from a gas supply unit oppositely facing the substrate and the etching target film is etched by using a plasma of the processing gas; and evacuating the inside of the processing chamber through an exhaust path. Through this process, unbalanced distribution of plasma active species in the vicinity of a circumferential edge portion of the substrate can be suppressed.

Abstract: Etching is performed through the following process. A substrate is loaded into a processing chamber and mounted on a mounting table therein. Then, in the state where a ring member at least a surface of which is made of a same material as a main component of an etching target film is provided to surround the substrate, a processing gas is injected in a shower-like manner from a gas supply unit oppositely facing the substrate and the etching target film is etched by using a plasma of the processing gas; and evacuating the inside of the processing chamber through an exhaust path. Through this process, unbalanced distribution of plasma active species in the vicinity of a circumferential edge portion of the substrate can be suppressed.

Abstract: Etching is performed through the following process. A substrate is loaded into a processing chamber and mounted on a mounting table therein. Then, in the state where a ring member at least a surface of which is made of a same material as a main component of an etching target film is provided to surround the substrate, a processing gas is injected in a shower-like manner from a gas supply unit oppositely facing the substrate and the etching target film is etched by using a plasma of the processing gas; and evacuating the inside of the processing chamber through an exhaust path. Through this process, unbalanced distribution of plasma active species in the vicinity of a circumferential edge portion of the substrate can be suppressed.

Abstract: A recyclable epoxy resin composition using a plant biomass in a resin skeleton and a cured material of the epoxy resin composition, and various types of products using them are provided. The epoxy resin composition comprises an epoxy resin; and a curing agent, wherein the curing agent is a biomass-derived acid anhydride having an acid anhydride bonded via an ester linkage to a biomass with a weight-average molecular weight of 300 to 5000.

Abstract: There is disclosed a biomass-derived epoxy compound as an epoxidized product of a raw-material biomass-derived compound having a weight-average molecular weight of 300 to 10000. The biomass-derived epoxy compound has a weight-average molecular weight of 600 to 20000 and is soluble in an organic solvent for the preparation of a varnish. The epoxy compound is prepared by dissolving the raw-material biomass-derived compound in an aqueous alkali solution; adding epichlorohydrin to the solution and heating the mixture; and evaporating epichlorohydrin from the heated mixture and precipitating a biomass-derived epoxy compound, in which the aqueous alkali solution has a pH of 13.5 to 11.0. The biomass-derived epoxy compound has both high solubility in organic solvents and satisfactory heat resistance and can be manufactured in a high yield on the basis of the raw material through a less number of processes.

Abstract: Provided is an environmentally friendly novel plant-based polycarbonate resin. Specifically, disclosed are: a plant-based polycarbonate resin which is a polymer derived from a plant-based material having a plurality of hydroxyl groups, in which molecules of the plant-based material are linked to each other through carbonate groups to form the polymer; and a production method of the polycarbonate resin.

Abstract: A recyclable epoxy resin composition using a plant biomass in a resin skeleton and a cured material of the epoxy resin composition, and various types of products using them are provided. The epoxy resin composition comprises an epoxy resin; and a curing agent, wherein the curing agent is a biomass-derived acid anhydride having an acid anhydride bonded via an ester linkage to a biomass with a weight-average molecular weight of 300 to 5000.

Abstract: Provided is an epoxy resin composition which excels in heat resistance properties and electrical properties, and is easily decomposable for the recycling of resources. The epoxy resin composition includes an epoxy compound and a curing agent, in which at least one of the epoxy compound and the curing agent contains a hydrolyzable tannin having a weight-average molecular weight (Mw) of 500 to 5000.

Abstract: There is disclosed a biomass-derived epoxy compound as an epoxidized product of a raw-material biomass-derived compound having a weight-average molecular weight of 300 to 10000. The biomass-derived epoxy compound has a weight-average molecular weight of 600 to 20000 and is soluble in an organic solvent for the preparation of a varnish. The epoxy compound is prepared by dissolving the raw-material biomass-derived compound in an aqueous alkali solution; adding epichlorohydrin to the solution and heating the mixture; and evaporating epichlorohydrin from the heated mixture and precipitating a biomass-derived epoxy compound, in which the aqueous alkali solution has a pH of 13.5 to 11.0. The biomass-derived epoxy compound has both high solubility in organic solvents and satisfactory heat resistance and can be manufactured in a high yield on the basis of the raw material through a less number of processes.

Abstract: A photosensitive composition comprising a polyimide precursor, a photosensitive material having a structure represented by the following formula wherein A1 is an atom belonging to Group VI of the periodic table, in the molecule thereof and/or a photosensitive material having a structure represented by the following formula: wherein A2 is O, S or N atom, in the molecule thereof is suitable for formation of a positive tone pattern excellent in heat resistance, and applicable to electronic devices.

Abstract: A highly reliable positive type photosensitive resin composition composed of diamine having a carboxyl group as a structural unit, which can be developed with an alkaline aqueous solution, comprising polyamic acid ester having hydrophobic group, o-quinonediazidesulfonyl amide compound, and/or o-quinonediazidesulfonyl amide sulfonic ester compound, and electronic devices using the same. A polyamide film having preferable positive type relief patterns, of which the unexposed portion is not corroded, can be obtained.

Abstract: A thermosetting resin composition comprising (A) a thermosetting polyimide and (B) a bismaleimide and showing a modulus of elasticity of 10.sup.7 to 10.sup.2 dyne/cm.sup.2 during heat curing thereof is suitable for forming an adhesive film used in a thin film wiring board having excellent heat resistance and high reliability.

Abstract: A photosensitive resin composition comprising (a) a polymer having carboxyl groups (b) a photoacid generator which generates an acid when irradiated with light, and (c) an aliphatic amine is capable of development with ease by use of a wide variety of aqueous solvents.

Abstract: Low-thermal-expansivity polyimides have a linear rigid skeleton, so that adhesion between perfectly cured low-thermal-expansivity polyimide films is very low. On the other hand, a film of a polyimide having a flexible skeleton shows high adhesiveness even after perfect curing, so that it is possible to enhance adhesion between the low-thermal-expansivity polyimide films by interposing a polyimide having a flexible skeleton. A flexible polyimide thin film is formed as a highly adhesive film on a low-thermal-expansivity polyimide film in a half-cured state, then metallic wiring is applied thereon, followed by formation of another highly adhesive thin film in a half-cured state, and then a low-thermal-expansivity polyimide film is further formed thereon. It is possible to provide a multilayer wiring structure which has improved adhesion between the low-thermal-expansivity polyimide film and the wiring pattern layer or the substrate.

Abstract: A plastic optical fiber comprising a core and a clad, said core being formed by an amorphous and optically transparent polymer and said clad being formed by a polymer having a refractive index lower than that of the core by at least 0.3%, at least one of the core and the clad being formed by an amorphous and optically transparent polymer containing metal elements and halogen atoms, is low in light loss and excellent in heat resistance.