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    Mg-Al-based hydrotalcite-type particles, chlorine-containing resin stabilizer and process for producing the particles
    1.
    发明公开
    Mg-Al-based hydrotalcite-type particles, chlorine-containing resin stabilizer and process for producing the particles 有权
    基于镁铝水滑石颗粒，用于制备颗粒含氯树脂和方法的稳定剂

    公开(公告)号：EP1088853A1

    公开(公告)日：2001-04-04

    申请号：EP00306661.0

    申请日：2000-08-04

    申请人： Toda Kogyo Corporation

    发明人： Kobayashi, Naoya ,  Honmyo, Torayuki ,  Katamoto, Tsutomu ,  Yamamoto, Akinori

    IPC分类号： C08K9/04 ,  C08K9/06 ,  C08L27/04 ,  C01F7/00

    CPC分类号： C08K9/04 ,  C08K9/06 ,  Y10T428/2991 ,  Y10T428/2998 ,  C08L27/04

    摘要： Mg-Al-based hydrotalcite-type particles suitable as a stabilizer for chlorine-containing resins comprise:

    (a) Mg-Al-based hydrotalcite-type core particles represented by the composition formula:

            Mg 1-x ·Al x ·(OH) 2 ·A n- p ·mH 2 O



    wherein 0.2≤x≤0.6; p=x/n; A is an n-valent anion; and m is more than 0 and not more than 1; and

    (b) a coating layer on each Mg-Al-based hydrotalcite-type core particle, which comprises at least one compound selected from higher fatty acids, organosilane compounds and rosins; and having:
    (c) a plate surface diameter of from 0.3 to less than 1.0 µm,
    (d) a thickness of from 0.02 to 0.08 µm,
    (e) a heat-resisting time of not less than 160 minutes.

    摘要翻译： 适合作为用于含氯树脂的稳定剂的Al-Mg基的水滑石型颗粒包括：由组成式（A）表示-Mg-Al基的水滑石型芯颗粒的Mg 1-x.Alx（OH）2。 A p.mH2O worin0.2≤x≤0.6; P = X / N; A是n价阴离子; 和m是大于0并且不大于1; 及（b）在每个基于镁铝水滑石型芯颗粒，其包含选自高级脂肪酸，有机硅烷化合物和松香中的至少一种化合物的涂层; 且具有：（c）由0.3的板面直径小于1.0微米，（d）中，厚度为从0点02分至0点08微米，（E）不小于160分钟的耐热时间。

    Magnetic metal particles containing iron as main component, process for producing the same and magnetic recording medium using the same
    2.
    发明公开
    Magnetic metal particles containing iron as main component, process for producing the same and magnetic recording medium using the same 审中-公开
    具有主要成分铁磁性金属粒子，及其制造方法，和由其磁记录介质

    公开(公告)号：EP1318527A2

    公开(公告)日：2003-06-11

    申请号：EP02258315.7

    申请日：2002-12-03

    申请人： Toda Kogyo Corporation

    发明人： Yamamoto, Akinori ,  Ota, Yasutaka ,  Kurokawa, Haruki ,  Maekawa, Masaaki

    IPC分类号： H01F1/06 ,  G11B5/706

    CPC分类号： H01F1/0551 ,  G11B5/70621 ,  Y10T428/325

    摘要： Magnetic metal particles containing iron as a main component, comprising cobalt in an amount of usually 20 to 50 atm%, calculated as Co, based on whole Fe, aluminum in an amount of usually 3 to 15 atm%, calculated as Al, based on whole Fe and a rare earth element in an amount of usually 3 to 20 atm%, calculated as rare earth element, based on whole Fe, and having an average major axis diameter of usually 0.02 to 0.065 µm, preferably from 0.02 to less than 0.05 µm, a coercive force of usually 159.2 to 222.9 kA/m (2,000 to 2,800 Oe), a soluble Na content of usually not more than 30 ppm, a soluble Ca content of usually not more than 100 ppm, and an oxidation stability Δσs of usually not more than 10%.

    摘要翻译： 基于全铁，铝大气压中在通常为3〜15％的量，以Al计，基于含有铁作为主要成分，在通常为20〜50％的量，计算作为Co的ATM包括钴，磁性金属粒子 批发Fe和在一般的3至20原子％的量的稀土元素，计算为稀土元素，基于整个的Fe，和具有上一般0时02至0065微米的平均长轴直径，优选从0点02分至小于 0.05微米，通常为159.2的矫顽力，以222.9千安/米（2000到2800奥斯特），一般不超过30 ppm的可溶性Na含量，一般不超过100ppm的可溶性Ca含量，和在氧化稳定性 通常不超过10％Δ-Σ秒。

    Spindle-shaped magnetic alloy particles for magnetic recording, and magnetic recording medium
    9.
    发明公开
    Spindle-shaped magnetic alloy particles for magnetic recording, and magnetic recording medium 审中-公开
    磁铁磁铁，磁铁，磁铁，磁铁

    公开(公告)号：EP1220208A1

    公开(公告)日：2002-07-03

    申请号：EP01310759.4

    申请日：2001-12-21

    申请人： Toda Kogyo Corporation

    发明人： Maekawa, Masaaki ,  Kurokawa, Haruki, Rumieru II Koihonmachi 305 ,  Okinaka, Kenji ,  Yamamoto, Akinori ,  Ota, Yasutaka

    IPC分类号： G11B5/706

    CPC分类号： G11B5/70621 ,  Y10S428/90

    摘要： Spindle-shaped magnetic alloy particles containing Fe and Co as main components; which contain from 20 to 50 atm% of cobalt, calculated as Co, based on the total amount of Fe; and which have an average major axis diameter (L) of from 0.03 to 0.10 µm; a coercive force value of from 159.2 to 238.7 kA/m (2,000 to 3,000 Oe); a crystallite size of from 100 to 160 Å; and an activation volume (V act ) of from 0.01 to 0.07E-4 µm 3 . The particles may be used in a magnetic recording medium.

    摘要翻译： 以Fe和Co为主要成分的主轴形磁性合金颗粒; 其含有20至50atm％的钴，以Co计算，基于Fe的总量; 平均长轴径（L）为0.03〜0.10μm; 矫顽力值为159.2〜238.7KA / m（2,000〜3,000Oe）; 微晶尺寸为100至160安培; 和活化体积（Vact）为0.01至0.07E-4μm3。 颗粒可以用在磁记录介质中。