摘要:
A curable composition comprises (A) an organic/inorganic composite in which a hydrolyzable silyl group and/or SiOH group-containing polysiloxane is bonded to a vinyl polymer through a Si—C bond, and (B) an organic UV absorber having a molecular weight of at least 500 and a weight retentivity of at least 95% when held at 150° C. for 24 hours in an open state. The curable composition is coated and cured to an article, whereby the article is endowed with satisfactory weathering resistance while minimizing coloration or degradation.
摘要:
A method and apparatus for welding members formed of thermoplastic resin material, with high welding strength and small strength variations. A laser welding apparatus 1 brings a first member 2 formed of a transmissive thermoplastic resin that transmits a laser beam into contact with a second member 3 formed of an absorptive thermoplastic resin that absorbs the laser beam, and joins the thermoplastic resin members by melting their contact surfaces 4 with the laser beam. The laser welding apparatus 1 further comprises a laser beam generator 10 for irradiating the contact surfaces with the laser beam shone from the side of the first member 3 so as to melt at least one of the contact surfaces of the first member and the second member. The apparatus also comprises a clamp mechanism 20 for pressing the first member and the second member together, a temperature sensor 31 as an adjusting means for adjusting the pressing force applied to the first member and the second member, and a personal computer 32 for calculating the pressing force based on the output of the temperature sensor. The clamp mechanism is controlled with the calculated pressing force.
摘要:
A process for producing a polyol by reacting an aliphatic aldehyde with formaldehyde in the presence of a basic catalyst, which comprises a step of concentration which comprises removing water and unreacted formaldehyde from a reaction liquid by distillation; a step of extraction which comprises extracting the polyol from a concentrated reaction liquid with an extracting reagent; a step of washing with water which comprises washing an extract liquid with water and separating the liquid into an oil layer containing the polyol and an aqueous layer; wherein by useing an specific aliphatic aldehyde as the extracting agent and recovering the extracting reagent from the oil layer containing the polyol after adjusting pH of the oil layer, a high purity polyhydric alcohol can be obtained at a high yield with suppressed formation of byproducts such as acetal compounds and aldol compounds.
摘要:
A physical distribution system comprises a tag writer device provided in a manufacturing facility for manufacturing common products to be supplied to a plurality of destinations, that writes related information concerning a product into a wireless tag included in the product, and a distribution facility system provided at a distribution facility, for determining a destination for the product and for shipping the product to the determined destination. The distribution facility system comprises a customized indication information acquiring device that acquires basic indication information corresponding to the determined destination of the product, a tag reader device that reads out the related information of the product from the wireless tag included in the product, a print information generator device that generates a label print information including the basic indication information acquired by the customized indication information acquiring device and the related information read out by the reader device, and a printer device that reads, on the product or on a label to be attached to the product, the label print information generated by the print information generator device.
摘要:
This invention provides an optical element for correcting a chromatic aberration corresponding to a short wavelength of a light source and further provides an optical pick-up device having the optical element for correcting a chromatic aberration and adapting for a further higher recording density and larger capacity of the optical recording medium, the optical reproducing device and the optical recording and reproducing device. The optical element for correcting a chromatic aberration arranged between a light source such as a semiconductor laser or the like with a wavelength being 440 nm or less and an objective with numerical aperture NA being 0.55 or more, a focal distance being 1.8 mm or more and an Abbe number at the d-line (587.6 nm) being 95.0 or less has a convex lens with at least an Abbe number at the d-line being 55 or more and a concave lens with an Abbe number at the d-line being 35 or less.
摘要:
An improved liquid crystal device and manufacturing method for same are described. In the device, a pair of substrates, between which a liquid crystal layer is disposed, is joined with pillars inbetween functioning as spacers which are provided of photocurable resin by photolithography. With this structure, the spacers can be in surface contact with the inside surfaces of the substrates on which electrode arrangement and active devices are formed.
摘要:
An outboard motor is provided with an intake device, in which a throttle body is connected to an upstream side of an intake manifold connected to an intake port formed in a cylinder head of an outboard motor engine and a silencer is connected to an upstream side of the throttle body. A noise reduction device is further disposed between a connecting portion of the throttle body and the silencer.
摘要:
Cores of an optical waveguide forming a Y-branch structured thermo-optic switch are stacked in a direction perpendicular to a substrate, and a heater is disposed on a clad right above an area where the cores overlap, thereby utilizing a large temperature gradient by the heater in the direction perpendicular to the substrate. The resulting stacked thermo-optic switch is low in power consumption and signal loss and high in extinction ratio.