摘要:
A curable resin composition for forming transparent abrasion-resistant coating on the surface of organic and inorganic materials comprising glycidol prepolymer. The composition can contain polymerizable alkoxysilane compounds in addition to glycidol prepolymer. The resulting coating has abrasion resistance far better than most known organic resins.
摘要:
A watch body for an electronic watch containing an integrated circuit chip and a printed circuit board is disclosed. The watch body comprises an upper case and a bottom cover which are selectively interconnected one with the other. A lead package frame is sandwiched between the upper case and the bottom cover and contains a plurality of electrical leads disposed thereon and electrically coupled to the integrated circuit chip. The lead frame has first and second sides with the first side having a first cavity with the integrated circuit chip matingly engaged therein. The plurality of leads are disposed on the first side of the lead frame so as to surround this first cavity down the circuit chip. The second side of the lead frame has a second cavity with the printed circuit board disposed therein. By the use of the watch body of the instant invention, a significantly smaller number of components, a simpler manufacturing process is achieved.
摘要:
A disk-shaped substrate supports on its front side a liquid-crystal cell bracketed by an upper and a lower glass plate and on its rear side an electric battery along with circuit elements for controlling the selective energization of various electrode leads of the cell to generate different digital symbols, the substrate being sandwiched between two flexible printed sheets whose conductors establish the necessary connections between the battery and the electrode leads of the cell. The connection between corresponding conductors of the two printed sheets is established by metal pins passing insulatedly through apertures in the substrate. A crystal oscillator included in the control circuit is enclosed in a sealed envelope which is received in a trough of the rear substrate face offset from a depression for the battery, the front substrate face being provided with a recess accommodating a chip connected in the wiring pattern of the printed sheet overlying that front face whose extremities are flexed around the lower glass plate to establish contact with conductor terminals carried on projecting marginal portions of the upper glass plate.
摘要:
A transparent coated resin composite comprising: (a) a resin substrate mainly comprising polymethyl methacrylate, (b) a precoating which is formed of a silicon compound selected from the group consisting of methacryloxyalkyltrialkoxysilanes, aminoalkyl-trialkoxysilanes, vinyltris(alkoxyalkoxy)silanes, vinyltrialkoxysilanes and hydrolysates thereof on said substrate, and (c) an over-coating which is formed of a silicon compound selected from the group consisting of glycidoxyalkyltrialkoxysilanes, N-aminoalkylaminoalkyl-trialkoxysilanes, (3,4-epoxycyclohexyl)alkyltrialkoxysilanes and hydrolysates thereof on said precoating is provided. The over-coating may contain other polymerizable monomers. The over-coating which provides the substrate with the good abrasion resistance and anti-fogging property is firmly bonded to the substrate by virtue of the precoating and exhibits excellent abrasion resistance as well as anti-fogging property without impairing the optical characteristics of methyl methacrylate resins.
摘要:
A mount bracket system (20) includes a wall-mount part (2) including an axis portion (4) with a cylindrical column shape and a stopper (5) provided at the axis portion and having a width larger than a diameter of the axis portion (4); and a wall-mount frame (3) including a path (7) continuing from an opening (7a) and having a width larger than the diameter of the axis portion (4) and smaller than the width of the stopper (5). The path includes a projection (7b) projecting inward from an edge of the path (7), and the projection (7b) is located nearer the opening (7a) than the axis portion (4) of the wall-mount part (2) is when the axis portion (4) is retained at a retaining point of the wall-mount frame (3).
摘要:
A functional membrane is provided, which has high functionality combined with the gas barrier performance and mechanical strength inherent in a polymer film substrate. In particular, a polymer electrolyte membrane is provided, which is excellent in terms of high proton conductivity and gas barrier performance and is most appropriate to serve as a polymer electrolyte membrane for fuel cells. A method for producing a functional membrane is provided, which comprises: a step of ion irradiation, in which active species are generated in a polymer film substrate containing nonconductive inorganic particles by irradiating the polymer film substrate with high-energy heavy ions to the extent of 104/cm2 to 1014/cm2; and a step of graft polymerization subsequent to the step of ion irradiation, in which one or more monomers selected from group A consisting of monomers containing useful functional groups are added such that the monomers are graft polymerized with the polymer film substrate.
摘要:
Disclosed is a novel ionic liquid gel electrolyte having high photoelectric conversion efficiency. Also disclosed are a novel dye-sensitized photoelectric conversion device using such an ionic liquid gel electrolyte, and a solar cell composed of such a dye-sensitized photoelectric conversion device. Specifically disclosed is an ionic liquid gel electrolyte obtained by gelling a liquid electrolyte by using an ionic organic oligomer gelling agent represented by the general formulae (1) and (2) below. Also specifically disclosed are a dye-sensitized photoelectric conversion device, wherein the ionic liquid gel electrolyte is arranged between a counter electrode and a dye-absorbed semiconductor substrate which is arranged in contact with a transparent conductive substrate, and a solar cell.
摘要:
An aromatic polymer film substrate, or a grafted aromatic polymer film substrate having a monomer introduced therein as graft chains is irradiated with ionizing radiation to impart a crosslinked structure. The aromatic polymer film substrate or the grafted aromatic polymer film substrate, provided with the crosslinked structure, is directly sulfonated to obtain a crosslinked aromatic polymer electrolyte membrane. The crosslinked aromatic polymer electrolyte membrane has low water uptake, high proton conductivity, low methanol permeability, high chemical stability, and excellent mechanical characteristics. A method for producing the crosslinked aromatic polymer electrolyte membrane is also provided.
摘要:
For the purpose of making available an RF coil which makes possible a reduction in elements to be controlled in varying the size of the RF coil, there are provided an original loop unit, a conductor so connected to the original loop unit as to split the original loop unit into split loop units, a capacitor connected in series to the conductor, and switching means which makes the conductor either conductive or non-conductive, wherein the electrostatic capacitance of the capacitor is so set as not to allow the split loop units to interfere with each other when the conductor is made conductive by the switching means.
摘要:
A magnetic resonance imaging apparatus capable of receiving magnetic resonance signals with a plurality of coils while uniformly exciting such signals is to be provided. An RF coil of the magnetic resonance imaging apparatus is provided with an original loop unit, and a conductor which is so connected to the original loop unit as to split the original loop unit into split loop units. A control unit applies a high frequency magnetic field with the original loop unit and receives magnetic resonance signals with the split loop units.