A pressure-sensitive adhesive sheet contains at least a pressure-sensitive adhesive layer containing an acrylic pressure-sensitive adhesive containing an acrylic polymer composition containing an acrylic polymer as a main component and a tackifier containing a tackifying resin as a main component, wherein reflection rate and attached amount in the fogging test in accordance with German Industrial Standard DIN 75201 are 70% or more and 20 mg or less, respectively In the acrylic pressure-sensitive adhesive which forms the pressure-sensitive adhesive layer, a ratio of components having a molecular weight of 300 or less is preferably 42% by weight or less based on the total amount of solid matter of the acrylic pressure-sensitive adhesive Furthermore, in the tackifying resin in the tackifier, a ratio of components having a molecular weight of 300 or less is suitably 42% by weight or less based on the total amount of solid matter of the tackifying resin

Pressure-sensitive adhesive sheet

A wired circuit board and a producing method thereof are provided which can precisely form an insulating layer and reduce transmission loss with a simple layer structure and also features excellent long-term reliability by preventing the occurrence of an ion migration phenomenon between a ground layer and a positioning mark layer, and the insulating layer to improve the adhesion therebetween and the conductivity of a conductor. A metal supporting board is prepared and a first metal thin film is formed on the metal supporting board. A resist is formed in a pattern and a ground layer and a positioning mark layer are formed on the first metal thin film exposed from the resist at the same time. A second metal thin film is formed over the ground layer and the positioning mark layer, then the resist is removed. An insulating base layer is formed on the first metal thin film including the upper surface of the second metal thin film, thereafter, a conductive pattern is formed on the insulating base layer.

Wired circuit board and producing method thereof

A composite material in the form of a continuous structure comprises an intrinsically conducting polymer (ICP) layer coated on a substrate, the composite material having a surface area of at least 0.1 m2/g, at least 1 m2/g, or at least 5 m2/g. Methods of manufacturing the composite material comprise coating the substrate with a layer of the intrinsically conducting polymer. Electrochemical or electrical devices comprise at least one component formed of the composite material.

Composite materials including an intrinsically conducting polymer, and methods and devices

A wired circuit board has a metal supporting board, a metal foil formed on the metal supporting board to have a thickness of less than 2.0 µm, a first insulating layer formed on the metal supporting board to cover the metal foil, and a conductive pattern formed on the first insulating layer.

Wired circuit board and production method thereof

A sonic emitter, horn array with enhanced emitter-to-air acoustic coupling, with particular application to ultrasonic frequencies. The emitter comprises a plate support member having opposing first and second faces separated by an intermediate plate body. The plate body includes a plurality of conduits configured as an array of acoustic horns, with a small throat opening at the first face and an intermediate horn section which diverges to a broad mouth opening at the second face. An emitter membrane is positioned in direct contact with the first face and extends across the small throat openings. The emitter membrane is biased for (i) applying tension to the membrane extending across the throat openings and (ii) displacing the membrane into a non-planar configuration.

Horn array emitter

PURPOSE: To provide an electrically conductive, transparent protecting film which is excellent in clarity, generates no static electricity on application or peeling and has no defects such as staining of the adhesive. CONSTITUTION: A π electron conjugate system conductive polymer layer 3 is formed on at least one surface of an insulating plastic base film 2, further a peelable adhesive layer 3 on the other surface of the base film so that the whole visible ray transmission exceeds 40% to give the conductive and transparent protecting film. COPYRIGHT: (C)1993,JPO&Japio

Electrically conductive, transparent film for protection purposes

PURPOSE: To obtain easily a composite having excellent durability in its conductivity, by polymerizing a monomer capable of forming an electron-conjugated polymer in the presence of an oxidative polymerization agent and a dopant in a treating liq. wherein a specific material to be made conductive is immersed. CONSTITUTION: A conductive composite comprising a material to be made conductive and an electron-conjugated polymer is obtained by polymerizing a monomer which has conjugated double bonds in its molecular structure and can be polymerized by oxidation (e.g. pyrrole) in a treating liq. wherein a material to be made conductive consisting of a highly water-absorbing synthetic resin or fiber (e.g. nylon-6 film) is immersed in the presence of an oxidative polymerization agent (e.g. potassium peroxodisulfate) and, if necessary, a dopant (e.g. ferric chloride). This composite is useful as materials for preventing occurrence of static electricity such as IC packaging materials, working clothes and the like. COPYRIGHT: (C)1987,JPO&Japio

Preparation of conductive composite

PURPOSE: To obtain a flock excellent in conductivity, flying property, fluidity and classifying property by coating the surface of a fiber with at least one kind of superfine particle selected from a group consisting of the superfine particles of polypyrrole, acidic colloidal silica and acidic silica. CONSTITUTION: This flock for electrostatic flocking used in various flocked articles such as building inetrior material, footgear and automobile parts is formed by oxidation-polymerizing a pyrrole monomer in a processing soln. contg. a fiber and forming a polypyrrole coating on the fiber surface. Namely, at least one kind of superfine particle selected from a group consisting of acidic colloidal silica, acidic silica superfine particle and alumina sol is deposited on the fiber surface along with the polypyrrole to form a coating. In this case, the sp.gr. of the superfine particle is appropriately controlled to 2 to 3 and the diameter to 0.01 to 0.02μm, and the thickness of the superfine particle layer is preferably adjusted to 0.01 to 0.1μm.

Flock for electrostatic flocking

PROBLEM TO BE SOLVED: To prevent defects of contamination or the like of a pressure sensitive adhesive without generating static electircity in a sticking process and peeling while its transparency is excellent. SOLUTION: The film 1 is so constituted that a π electron conjugated conductive polymer layer 3 is formed on one side surface of a base material film 2 consisting of flexible material insulating plastics, and further a removable pressure sensitive adhesive layer 4 is formed on the π electron conjugated conductive polymer layer on the other face side of the base material film. In this case, surface electrical resistivity on a surface of the removable pressure sensitive adhesive layer 4 is at most 10 Ω/(square), visible ray transmissivity is at least 40%, and peel zone voltage is at most 0.1kv.

Conductive transparent protective film

PURPOSE:To obtain a conductive particulate matter useful as a raw material for various conductive products, by coating the surface of a particulate matter with a pyrrole polymer or impregnating the particulate matter with part or the whole of the pyrrole polymer. CONSTITUTION:The title conductive composite power comprises a particulate matter and a pyrrole polymer covering the surface of the particulate matter or part or the whole of which has been infiltrated into the particulate matter. The conductive particulate matter is prepared by the following method. A particulate matter is dispersed in a non-solvent. In the non-solvent, the particulate matter is brought into contact with a pyrrole monomer and an oxidative polymerizing agent, followed by polymerization of the pyrrole monomer in the presence of a dopant. Examples of the particulate matter include synthetic resin particulate matter, natural polymer particulate matter, and inorganic particulate matter. The dopant may be any acceptor dopant which is commonly used in the art. Examples of the oxidative polymerizing agent include halogens, peroxo acids (or their salts), and permanganic acid (or permanganate).

Conductive composite particulate matter and production of same

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