Abstract: An ethylenically unsaturated group-containing fluoropolymer, which is obtained by reacting a compound containing one isocyanate group and at least one ethylenically unsaturated group, and a hydroxyl group-containing fluoropolymer at an isocyanate group/hydroxyl group molar ratio of 1.1 to 1.9. According to the present invention, an ethylenically unsaturated group-containing fluoropolymer having superior antiscratching property, coating property and durability, as well as a curable resin composition and an antireflection film using the same can be provided.

Abstract: An ethylenically unsaturated group-containing fluoropolymer, which is obtained by reacting a compound containing one isocyanate group and at least one ethylenically unsaturated group, and a hydroxyl group-containing fluoropolymer at an isocyanate group/hydroxyl group molar ratio of 1.1 to 1.9. According to the present invention, an ethylenically unsaturated group-containing fluoropolymer having superior antiscratching property, coating property and durability, as well as a curable resin composition and an antireflection film using the same can be provided.

Abstract: The coating composition of the present invention contains an organic-inorganic hybrid polymer and a polysiloxane having a specific molecular weight, wherein the organic-inorganic hybrid polymer is prepared from a specific silane compound and a specific silyl group-containing polymer, and the weight ratio (Wa/Wb) between the silane compound content (Wa) and the silyl group-containing polymer content (Wb) is within the range from 5/95 to 50/50 (provided that Wa+Wb=100). The coating composition enables to obtain a coating film excellent in transparency, adhesion to organic substrates and radical resistance, and the coating composition has excellent storage stability.

Abstract: An antireflection film laminate comprising a low refractive index film on the surface side and a high refractive index film which is disposed under the low refractive index film in contact therewith, wherein the high refractive index film is formed as a discontinuous layer in the planar direction. If the high refractive index film is formed as a discontinuous layer, the high refractive index film can enter into the low refractive index film to restrain movement of the low refractive index film, and therefore an antireflection film laminate exhibiting superior antiscratching property and transparency can be obtained.

Abstract: A flat speaker comprising a vibrating plate including a spiral voice coil, a lead portion extracted from the vice coil and reinforced by the reinforcing member, and an electric supply line; an edge portion supporting the vibrating plate; and a yoke, supporting the edge portion, on which the permanent magnet arranged to face the voice coil. The flat speaker 1 of the invention includes a vibrating membrane 2 of an insulating base film 3 with a spiral or meandering voice coil 4 formed on one or both faces thereof, a permanent magnet 5 arranged on corresponding location facing the voice coil 4; and a yoke 6 on which the permanent magnet 5 is arranged. The vibrating membrane 2 is avoided from hitting the permanent magnet by providing a perforated sheet on the back face of the yoke to control acoustic resistance.

Abstract: An antireflection film laminate comprising a low refractive index film on the surface side and a high refractive index film which is disposed under the low refractive index film in contact therewith, wherein the high refractive index film is formed as a discontinuous layer in the planar direction. If the high refractive index film is formed as a discontinuous layer, the high refractive index film can enter into the low refractive index film to restrain movement of the low refractive index film, and therefore an antireflection film laminate exhibiting superior antiscratching property and transparency can be obtained.

Abstract: Photocatalytic coating compositions contain a photocatalytic material such as obtained by doping nitrogen atoms to an interstitial site of metal oxide crystals, a titanium compound having a specific structure, an organosilane hydrolysate having a specific structure, and an organosiloxane oligomer having a specific structure. The photocatalytic coating compositions can give coating films that exhibit adequate photocatalytic action even in an environment with less spectral components having wavelengths of 400 nm or below and more visible light, for example in an indoor environment and in vehicle interiors having UV protection glass, and that have high transparency. Further, the photocatalytic coating compositions have good storage stability of dispersions.

Abstract: [PROBLEM TO BE SOLVED] To provide a cured product, which is excellent in the prevention of adherence of a water repellent oil component, finger prints and the like and wiping-off properties (anti-fouling properties) thereof, as well as in thermal shock properties, adhesion or other properties, and a photosensitive fluororesin composition for easily providing the above cured product. [SOLUTION] A photosensitive fluororesin composition comprising (A) a fluorocopolymer, (B) a compound having at least two alkyletherized amino groups in its molecule, (C) a photosensitive acid generating agent, and (D) a solvent, wherein the fluorocopolymer (A) is a copolymer comprising (A1) a structural unit derived from at least one monomer selected from fluoro(meth)acrylic esters, fluoroolefins, and fluoroolefin derivatives and (A2) a structural unit derived from at least one monomer selected from hydroxyl-containing monomers, epoxy-containing monomers, and carboxyl-containing monomers.

Abstract: A weight is attached to the rear side of a magnetic circuit of a speaker unit. The tip of a boss that projects from the front side of the weight is joined to the rear side of a center pole of the magnetic circuit with a bolt. Even if reactive force that is generated when an electrical signal is converted into mechanical vibration by the magnetic circuit and a voice coil and sound waves are emitted from a vibration plate is transmitted to the magnetic circuit, the vibration of the magnetic circuit is suppressed by the weight. In this manner, sound quality with a good transient characteristic can be obtained.

Abstract: A weight is attached to the rear side of a magnetic circuit of a speaker unit. The tip of a boss that projects to the front side from the weight is joined to the rear side of a center pole of the magnetic circuit with a bolt. Even if reactive force that is generated when an electrical signal is converted into mechanical vibration by the magnetic circuit and a voice coil and sound waves are emitted from a vibration plate is transmitted to the magnetic circuit, the vibration of the magnetic circuit is suppressed by the weight. In this manner, sound quality with a good transient characteristic can be obtained.

Abstract: A speaker device has a pair of speaker units each including a magnetic circuit. The magnetic circuits are opposed and connected to each other by a binding member. Vibrations generated by the speaker units are canceled to each other so that the occurrence of unnecessary vibrations can be suppressed and the transient characteristic can be improved. Acoustic load members are arranged in the front portions of frames so that the resonance frequency can be lowered and a band of reproducing sound of low frequency can be expanded.

Abstract: An exciter for directly vibrating a board, which enables a sufficient rotational torque to be obtained by a work tool at the time of attachment or detachment, provided with a magnetic circuit unit having an outside yoke comprised of a side wall and a bottom, a permanent magnet fastened to the bottom, and an inside yoke and with a coil inserted into a clearance between the side wall and inside yoke, the magnetic circuit unit being vibratably supported at the coupler member by elastic members, the coupler member being screwed with the bracket member fastened to the surface of the board, two parallel flat surfaces engaging with ends of a work tool being provided at an outer circumference of the outside yoke, and the work tool being turned to attach/detach the coupler member with respect to the bracket member.

Abstract: Coating compositions are silane-based coating compositions containing (a) fine metal particles and/or fine metal oxide particles, and (b) a titanium compound of specific structure and/or (d) an organosiloxane oligomer of specific structure, and (c) a silane compound of specific structure. The silane-based coating compositions can give coating films having good dispersibility of fine particles (a) and high transparency even at high concentrations.

Abstract: A positive-tone radiation-sensitive composition including: (A) at least one compound selected from the group consisting of a hydrolyzable silane compound represented by general formula (R1)pSi(X)4?p (wherein R1 is a non-hydrolyzable organic group having 1 to 12 carbon atoms, X is a hydrolyzable group, and p is an integer from 0 to 3), hydrolyzates thereof and condensates thereof; (B) a photoacid generator; and (C) a basic compound. A cured product that is excellent in terms of pattern precision and so on can be obtained by using the composition. The composition can be used as a material for forming optical waveguides.

Abstract: A speaker for vehicle has a weight mounted on the backside of a magnetic circuit of a speaker unit. The weight includes a weighting part having a shape in which the thickness in an axial line of the speaker unit is made small and the diameter in a direction perpendicular to the axial line is extended. The outer diameter of the weighting part is made longer than that of the magnetic circuit. The weighting part has a peripheral edge extending forward in the axial direction to cover the outer periphery of the magnetic circuit at least partially. Where a frame of the speaker unit is provided with an opening, the weight is designed to have a shape and position so as not to face the opening.

Abstract: An exciter for directly vibrating a board, which enables a sufficient rotational torque to be obtained by a work tool at the time of attachment or detachment, provided with a magnetic circuit unit having an outside yoke comprised of a side wall and a bottom, a permanent magnet fastened to the bottom, and an inside yoke and with a coil inserted into a clearance between the side wall and inside yoke, the magnetic circuit unit being vibratably supported at the coupler member by elastic members, the coupler member being screwed with the bracket member fastened to the surface of the board, two parallel flat surfaces engaging with ends of a work tool being provided at an outer circumference of the outside yoke, and the work tool being turned to attach/detach the coupler member with respect to the bracket member.

Abstract: The subject invention provides a communication management system that allots transmission rights according to requests from the communication stations. The allocation of the transmission rights is carried out within a specified predefined period. The system re-allots transmission rights to at least a part of the communication stations at a time point where all communication stations, that have been provided with transmission rights, consume their transmission right grant periods, or complete their transmission within the transmission right grant periods. With this arrangement, it is possible to securely prevent waste of the communication band, realizing effective use of the communication band. Further, the transmission station in a tolerable communication condition can be immune to bad influence from the transmission station in a bad condition.

Abstract: A antireflection laminate having a first layer formed on the outermost side and a second layer formed under the first layer. The second layer contains a needle-like antimony-containing tin oxide and may be a cured product prepared by curing an organic solvent type curable composition containing the needle-like antimony-containing tin oxide; a reaction product of a hydroxyl group-containing polyfunctional (meth)acrylate and a diisocyanate; a polyfunctional (meth)acrylate; and photoinitiator.

Abstract: An exciter for directly vibrating a board treated for dustproofing and heat dissipation, provided with a vibrator comprised of an outer yoke, a permanent magnet, and inner yoke, having a coil fixed inserted between the outer yoke and inner yoke, and having a coupler member for coupling the exciter to the surface of the board. The coupler member and vibrator are connected by an elastic member. A closed space is formed in the exciter by providing a sealing member between the outer yoke and coupler member. A through hole is formed in the outer yoke. Due to the vibration-of the vibrator at the time of coil excitation, air convection is caused through the through hole between the closed space and the outside space.

Abstract: A speaker box is covered with a buffer material exclusive of a portion where an acoustic output is derived from a speaker unit. The speaker box covered with the buffer material is attached to the surface of a wall member such as an interior member of a vehicle body or a side plate outside the vehicle body in a manner the speaker box is pressed by a holding member, which is a part of the interior member or designed member, and secured by bolts. Even when the surface of the speaker box is vibrated, the buffer material prevents an acoustic output due to the vibration from being generated so that no unnecessary acoustic signal is generated.