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    • 3. 发明授权
    • Thermal recording material
    • 热敏记录材料
    • US08101546B2
    • 2012-01-24
    • US12065115
    • 2006-05-29
    • Atsushi Jikihara
    • Atsushi Jikihara
    • B41M5/337
    • B41M5/3372C08F8/44C08F8/12C08F218/08C08F222/02C09D109/08C08K13/02
    • In the present invention, a dispersion that has excellent dispersion efficiency, shows hardly any premature graying, and exhibits excellent dispersion stability and storage stability when heated is prepared, and the thermal recording material excellent in color developing sensitivity and whiteness of the background is provided.The present invention provides a thermal recording material including a support and a thermosensitive coloring layer that is provided on the support and contains an electron-donating colorless dye and an electron-accepting compound, wherein the thermosensitive coloring layer contains a polyvinyl alcohol-based resin (A) containing a carboxyl group that has been produced by saponification of polyvinyl ester obtained by the polymerization in the presence of aldehydes or ketones and that has an absorbance at 280 nm of 0.20 to 0.85 obtained from an ultraviolet absorption spectrum of a 0.1 wt % aqueous solution thereof.
    • 在本发明中,具有优异的分散效率的分散体几乎不显示任何过早的变灰,并且在制备加热时表现出优异的分散稳定性和储存稳定性,并且提供了显色性和背景白度优异的热敏记录材料。 本发明提供一种热敏记录材料,其包括载体和热敏着色层,其设置在载体上并含有给电子性无色染料和电子接受性化合物,其中热敏着色层含有聚乙烯醇系树脂( A),其含有通过在醛或酮的存在下聚合得到的聚乙烯酯皂化生成的羧基,并且在280nm处的吸光度为0.20至0.85,其由0.1重量%的水溶液 溶液。
    • 6. 发明授权
    • Process for producing vinyl alcohol polymer
    • 制备乙烯醇聚合物的方法
    • US5710211A
    • 1998-01-20
    • US684484
    • 1996-07-19
    • Toshiaki SatoNaoki FujiwaraAtsushi Jikihara
    • Toshiaki SatoNaoki FujiwaraAtsushi Jikihara
    • C08F8/12C08F8/34C08F8/00
    • C08F8/34
    • According to the present invention, there are provided a process for producing a vinyl alcohol polymer comprising reaction of a vinyl ester polymer (A) having an epoxy group with a compound (B) having a thiol or thioester group and hydrolysis thereof, said hydrolysis being conducted during or after said reaction; and a process for producing a vinyl alcohol polymer comprising reaction of a vinyl ester polymer (C) having a thiol or thioester group with a compound (D) having an epoxy group and hydrolysis thereof, said hydrolysis being conducted during or after said reaction. According to the present invention, it is possible to efficiently introduce into PVA various functional groups having excellent reactivity, crosslinkability, ionic interactivity, water-solubility, interfacial physical properties, low-temperature flexibility, etc., under relatively mild reaction conditions. According to the present invention, in addition, it is possible to introduce into PVA such various functional groups, which could not be obtained by conventional methods.
    • 根据本发明,提供一种乙烯醇聚合物的制造方法,其包括具有环氧基的乙烯基酯聚合物(A)与具有硫醇或硫酯基的化合物(B)的反应及其水解反应,所述水解为 在所述反应期间或之后进行; 以及包括具有硫醇或硫酯基的乙烯基酯聚合物(C)与具有环氧基的化合物(D)的水解反应的乙烯醇聚合物的方法,所述水解在所述反应期间或之后进行。 根据本发明,在相对温和的反应条件下,可以有效地向PVA中引入具有优异的反应性,交联性,离子交互性,水溶性,界面物理性质,低温柔韧性等的各种官能团。 根据本发明,另外,可以将常规方法不能得到的各种官能团引入到PVA中。
    • 10. 发明申请
    • MULTILAYERED CHARGE-MOSAIC MEMBRANE AND MANUFACTURING METHOD THEREFOR
    • 多层充电电容膜及其制造方法
    • US20120285881A1
    • 2012-11-15
    • US13519499
    • 2010-12-27
    • Atsushi JikiharaKenichi KobayashiMitsuru Higa
    • Atsushi JikiharaKenichi KobayashiMitsuru Higa
    • B01D71/82B01D67/00B01D69/02
    • B01D69/10B01D69/02B01D69/12B01D71/80B01D71/82B01D2325/18
    • There is provided a multilayered charge-mosaic membrane having a porous supporting layer (A), a porous intermediate layer (B) and a charge-mosaic layer (C), wherein the porous supporting layer (A), the porous intermediate layer (B) and the charge-mosaic layer (C) are located in this order; the porous supporting layer (A) and/or the porous intermediate layer (B) are made of a fiber layer containing hydrophilic fibers; a thickness of the porous intermediate layer (B) is 0.1 to 100 μm; a porosity of the porous supporting layer (A) is larger than a porosity of the porous intermediate layer (B); the cationic and/or the anionic polymers constituting the charge-mosaic layer (C) is a polyvinyl alcohol having an ionic group. Thus, there is provided a multilayered charge-mosaic membrane having a large salt permeation flux and excellent mechanical strength.
    • 提供一种具有多孔支撑层(A),多孔中间层(B)和电荷 - 马赛克层(C)的多层电荷镶嵌膜,其中多孔支撑层(A),多孔中间层(B )和电荷镶嵌层(C)按顺序排列; 多孔支撑层(A)和/或多孔中间层(B)由含有亲水纤维的纤维层制成; 多孔中间层(B)的厚度为0.1〜100μm; 多孔支承层(A)的孔隙率大于多孔中间层(B)的孔隙率。 构成电荷马赛克层(C)的阳离子和/或阴离子聚合物是具有离子性基团的聚乙烯醇。 因此,提供了具有大的盐渗透通量和优异的机械强度的多层电荷镶嵌膜。