Acicular hematite particles and magnetic recording medium
    81.
    发明授权
    Acicular hematite particles and magnetic recording medium 失效
    针状赤铁矿颗粒和磁记录介质

    公开(公告)号:US6153296A

    公开(公告)日:2000-11-28

    申请号:US266018

    申请日:1999-03-11

    IPC分类号: C01G49/00 C01G49/06 G11B5/733

    摘要: Acicular hematite particles of the present invention contain zirconium of 0.05 to 30% by weight (calculated as Zr) based on the total weight of the particles, which is present within the particle, which have an average major axis diameter of not more than 0.3 .mu.m and a pH value of not less than 8, and contain not more than 300 ppm of soluble sodium salt, calculated as Na and not more than 150 ppm of soluble sulfate, calculated as SO.sub.4.Such acicular hematite particles are suitable as non-magnetic particles for a non-magnetic undercoat layer of a magnetic recording medium which exhibits a low light transmittance, an excellent smooth surface, a high strength and an excellent durability, and can be prevented from being deteriorated in magnetic properties due to the corrosion of magnetic acicular metal particles containing iron as a main component which are dispersed in a magnetic recording layer thereof.

    摘要翻译: 本发明的针状赤铁矿颗粒含有基于颗粒内存在的平均长径不大于0.3μm的颗粒总重量为0.05〜30重量%(以Zr计算)的锆 m,pH值不小于8,并且含有不大于300ppm的可溶性钠盐,以Na计,不超过150ppm的可溶性硫酸盐,以SO 4计算。 这种针状赤铁矿颗粒适用于磁记录介质的非磁性底涂层的非磁性颗粒,其表现出低的透光率,优异的光滑表面,高强度和优异的耐久性,并且可以防止劣化 由于以分散在其磁记录层中的以铁为主要成分的磁性针状金属颗粒的腐蚀而导致的磁特性。

    Black non-magnetic composite particles for black toner and black toner
using the same
    82.
    发明授权
    Black non-magnetic composite particles for black toner and black toner using the same 失效
    用于黑色调色剂的黑色非磁性复合颗粒和使用其的黑色调色剂

    公开(公告)号:US6130017A

    公开(公告)日:2000-10-10

    申请号:US293057

    申请日:1999-04-16

    IPC分类号: G03G9/087 G03G9/09

    摘要: Black non-magnetic composite particles for black toner according to the present invention, comprise:black hematite particles or black iron oxide hydroxide particles as core particles;fine particles which are adhered or exist on at least a part of the surface of each magnetite particle, and comprise oxides, oxide hydroxides or oxides and oxide hydroxides composed of at least one element selected from the group consisting of Si, Zr, Ti, Al and Ce; anda methyl hydrogen polysiloxane coating layer formed on said fine particles or said fine particles and the exposed surface of the magnetite particle,the average particle size of said black non-magnetic composite particles being 0.08 to 1.0 .mu.m.Such black non-magnetic composite particles are suitable for a black toner which can exhibit not only an excellent flowability but also a high volume resistivity.

    摘要翻译: 本发明黑色调色剂黑色非磁性复合颗粒包括黑色赤铁矿颗粒或黑色铁氧化物氢氧化物颗粒作为核心颗粒; 附着或存在于每个磁铁矿颗粒的表面的至少一部分上的细颗粒,并且包含由选自Si,Zr,Ti,Al中的至少一种元素组成的氧化物,氧化物氢氧化物或氧化物和氧化物氢氧化物 和Ce; 和形成在所述微粒或所述微粒上的甲基氢聚硅氧烷涂层和所述磁铁矿粒子的露出面,所述黑色非磁性复合粒子的平均粒径为0.08〜1.0μm。 这种黑色非磁性复合颗粒适用于黑色调色剂,其不仅具有优异的流动性,而且还具有高的体积电阻率。

    Titanium oxide particles, substrate for magnetic recording medium and
magnetic recording medium using the same
    84.
    发明授权
    Titanium oxide particles, substrate for magnetic recording medium and magnetic recording medium using the same 失效
    氧化钛粒子,磁记录介质用基板及使用其的磁记录介质

    公开(公告)号:US6042937A

    公开(公告)日:2000-03-28

    申请号:US990880

    申请日:1997-12-15

    摘要: The present invention relates to titanium oxide particles having an average particle size of not more than 0.3 .mu.m, and a BET specific surface area of 15 to 200 m.sup.2 /g, containing a soluble sodium salt of not more than 230 ppm, calculated as Na, and a soluble sulfate of not more than 150 ppm, calculated as SO.sub.4, and having a pH value of not less than 8. The titanium oxide particles of the present invention are suitable as non-magnetic particles for a non-magnetic undercoat layer of a magnetic recording medium which uses magnetic particles containing iron as a main ingredient, and even more particularly, are suitable as non-magnetic particles for a non-magnetic undercoat layer of a magnetic recording medium which uses magnetic particles containing iron as a main ingredient, show an excellent dispersibility in a binder resin, contain only a small amount of soluble sodium salt and soluble sulfate, and have a pH value of not less than 8.

    摘要翻译: 本发明涉及平均粒径不大于0.3μm,BET比表面积为15-200m2 / g的氧化钛颗粒,其含有不大于230ppm的可溶性钠盐,其计算为Na ,以SO4计算的不大于150ppm的可溶性硫酸盐,pH值不小于8.本发明的氧化钛颗粒适合作为非磁性颗粒用于非磁性底涂层 使用以铁为主成分的磁性粒子的磁记录介质,更具体地说,适合作为使用以铁为主要成分的磁性粒子的磁记录介质的非磁性底涂层的非磁性粒子, 在粘合剂树脂中显示出优异的分散性,仅含有少量的可溶性钠盐和可溶性硫酸盐,并且具有不小于8的pH值。

    Iron oxide particles
    85.
    发明授权
    Iron oxide particles 失效
    氧化铁颗粒

    公开(公告)号:US5922464A

    公开(公告)日:1999-07-13

    申请号:US908984

    申请日:1997-08-08

    摘要: A rubber or resin composition comprises:0.1 to 10.0 parts by weight of iron oxide particles composed of iron oxide core which contains 0.21 to 2.14 wt % of silicon, calculated as SiO.sub.2, and 0.01 to 10.0 wt %, calculated as SiO.sub.2, of a precipitate composed of silicon, which adheres to the surfaces of said iron oxide core, a sphere ratio, maximum diameter/ minimum diameter, of said iron oxide particles being of 0.7 to 1.0, an average particle diameter of said iron oxide particles being 0.05 to 1.0 .mu.m, a geometric standard deviation .sigma.g of said iron oxide particles which shows the particle size distribution being not more than 1.40, a bulk density of said iron oxide particles being 0.80 to 1.5 g/cm.sup.3, and a surface activity of said iron oxide particles which is indicated by the number of cyclohexanone molecules adsorbed to the surfaces of the iron oxide particles, number of molecules/nm.sup.2, being not more than 1.70; and90 to 99.9 parts by weight of rubber or thermoplastic resin.

    摘要翻译: 橡胶或树脂组合物包含:0.1至10.0重量份由氧化铁芯组成的氧化铁颗粒,其含有0.21至2.14重量%的硅,以SiO 2计,和0.01至10.0重量%,以SiO 2计,沉淀物 由氧化铁芯的表面附着的硅构成,所述氧化铁粒子的球体比,最大直径/最小直径为0.7〜1.0,所述氧化铁粒子的平均粒径为0.05〜1.0μm m,所述氧化铁颗粒的几何标准偏差σg,其显示出不大于1.40的粒度分布,所述氧化铁颗粒的堆积密度为0.80至1.5g / cm 3,所述氧化铁颗粒的表面活性 其由吸附在氧化铁颗粒表面上的环己酮分子的数目表示,分子数/ nm 2不大于1.70; 和90〜99.9重量份的橡胶或热塑性树脂。

    Method of producing L-amino acid
    88.
    发明授权
    Method of producing L-amino acid 有权
    生产L-氨基酸的方法

    公开(公告)号:US08512987B2

    公开(公告)日:2013-08-20

    申请号:US12545966

    申请日:2009-08-24

    IPC分类号: C12P13/24

    CPC分类号: C12P13/08 C12P13/04

    摘要: An L-amino acid is produced by culturing a microorganism belonging to the family Enterobacteriaceae having an L-amino acid-producing ability and modified so that glycerol dehydrogenase and dihydroxyacetone kinase activities are increased, in a medium containing glycerol as a carbon source to produce and accumulate an L-amino acid in the medium or cells, and collecting the L-amino acid from the medium or the cells.

    摘要翻译: 通过在含有甘油作为碳源的培养基中培养属于具有L-氨基酸生产能力的肠杆菌科的微生物并进行修饰以使甘油脱氢酶和二羟基丙酮激酶活性增加的L-氨基酸产生, 在培养基或细胞中积累L-氨基酸,并从培养基或细胞中收集L-氨基酸。

    REFLECTIVE MASK BLANK FOR EUV LITHOGRAPHY
    90.
    发明申请
    REFLECTIVE MASK BLANK FOR EUV LITHOGRAPHY 失效
    反射掩蔽空白用于EUV LITHOGRAPHY

    公开(公告)号:US20110070534A1

    公开(公告)日:2011-03-24

    申请号:US12952254

    申请日:2010-11-23

    申请人: Kazuyuki HAYASHI

    发明人: Kazuyuki HAYASHI

    IPC分类号: G03F1/00 G03F7/20

    摘要: To provide a reflective mask blank for EUV lithography having a low reflective layer having a low reflectance in the wavelength region of EUV light and an inspection light for a mask pattern, particularly having low reflection properties in the entire wavelength region (190 to 260 nm) of an inspection light for a mask pattern, and having a high etching rate in chlorine type gas etching.A reflective mask blank for EUV lithography, comprising a substrate, and a reflective layer to reflect EUV light, an absorber layer to absorb EUV light and a low reflective layer to an inspection light (wavelength:190 nm to 260 nm) for a mask pattern, formed in this order over the substrate, wherein the low reflective layer contains silicon (Si) and nitrogen (N) in a total content of at least 95 at %, has a Si content of from 5 to 80 at %, and a N content of from 15 to 90 at %.

    摘要翻译: 为了提供一种用于EUV光刻的反射掩模板,其具有在EUV光的波长区域中具有低反射率的低反射层和用于掩模图案的检查光,特别是在整个波长区域(190-260nm)具有低反射特性, 的掩模图案的检查光,并且在氯气蚀刻中具有高蚀刻速率。 用于EUV光刻的反射掩模板,包括基板和反射EUV光的反射层,用于将掩模图案的EUV光和低反射层吸收到检查光(波长:190nm至260nm)的吸收层 ,其中低反射层含有至少95原子%的总含量的硅(Si)和氮(N),Si含量为5-80原子%,N 含量从15%到90%。