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Kōtō-ku, Japan

Patent
OJI Holdings Corporation | Date: 2013-01-08

A biaxially stretched polypropylene film for a capacitor containing an isotactic polypropylene. The weight average molecular weight (Mw) of the isotactic polypropylene as measured by gel permeation chromatography (GPC) is 250,000 to 450,000, the molecular weight distribution Mw/Mn is 7 to 12 and Mz/Mn is 20 to 40, and the value of a difference obtained by subtracting a differential distribution value when the logarithmic molecular weight Log(M)=6 from a differential distribution value when Log(M)=4.5 on a molecular weight distribution curve thereof is 8% to 20%. The ultrathin biaxially stretched polypropylene film for a capacitor has superior heat resistance performance and withstands voltage performance.


The present invention provides a multicolor thermal recording material that allows multicolor printing in at least four colors, depending on differences in the conditions of applying heat from a thermal head, and that is inexpensive and has excellent material selectivity, as well as providing a method for developing color of the multicolor thermal recording material. The multicolor thermal recording material comprises (1) a support, and in order from a side close to the support, (2) a first thermal color-developing layer containing a first dye precursor and a color-developing compound reactive with the first dye precursor under heating to develop the color of the first dye precursor, (3) an intermediate layer, (4) a second thermal color-developing layer containing a particle component containing a second dye precursor, and a color-developing compound reactive with the second dye precursor under heating to develop the color of the second dye precursor, and (5) a third thermal color-developing layer containing a particle component containing a third dye precursor, and a color-developing compound reactive with the third dye precursor under heating to develop the color of the third dye precursor; wherein the first, second, and third dye precursors are capable of developing mutually different colors; the second dye precursor-containing particle component contained in the second thermal color-developing layer comprises composite fine particles containing the second dye precursor and a polymeric compound; and the third dye precursor-containing particle component contained in the third thermal color-developing layer comprises composite fine particles containing the third dye precursor and a polymeric compound.


Objects of the present invention are to provide a phosphoric acid-esterified fine cellulose fiber of which slurry shows superior transparency, and to provide a method for producing a phosphorylated fine cellulose fiber showing superior transparency with good efficiency and high yield. According to the present invention, there is provided a phosphoric acid-esterified fine cellulose fiber, of which 0.2 mass % aqueous dispersion shows a solution haze of 15% or lower.


An organic light emitting diode and a method for manufacturing the same. The organic light emitting diode includes an anodic conductive layer, an organic EL layer, and a cathodic conductive layer formed from Ag or an alloy of Ag, or the like, sequentially laminated on a substrate, such that a two-dimensional lattice structure is provided on a surface of the cathodic conductive layer on an organic EL layer side, an extraction wavelength and a distance between centers of concave portions or convex portions in the two-dimensional lattice structure are within a region surrounded by specific coordinates in a graph illustrating a relationship between the light extraction wavelength and the distance, and the depth of the concave portions or a height of the convex portions is 12 nm to 180 nm.


Patent
Oji Holdings Corporation | Date: 2014-02-07

The present invention provides a heat-sensitive recording material having a high recording density, excellent plasticizer resistance in recorded portions, and excellent resistance to thermal background fogging in high-temperature environments. The heat-sensitive recording material includes a heat-sensitive recording layer containing a specific sulfonamide compound.

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