公开(公告)号：US06458453B1

公开(公告)日：2002-10-01

申请号：US09557881

申请日：2000-04-25

申请人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Seiji Ishitani

发明人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Seiji Ishitani

IPC分类号： G11B5708

CPC分类号： B82Y30/00 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/20 ,  C01P2004/32 ,  C01P2004/41 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/52 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/82 ,  C01P2004/86 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/42 ,  C01P2006/60 ,  C01P2006/62 ,  C01P2006/80 ,  C09C1/24 ,  C09C3/006 ,  C09C3/12 ,  G11B5/708 ,  Y10T428/25 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2995

摘要： A magnetic recording medium composed of a non-magnetic base film and a magnetic recording layer containing a binder resin, magnetic particles, and as a filler black composite hematite particles having an average diameter of 0.08 to 1.0 &mgr;m. The composite particles have cores of hematite particles which are surface coated with an organosilicon compound. A carbon black coating is formed on the organosilicon coating layer. In addition, the hematite core particles may have an oxide or hydroxide coating layer formed on the surface of the hematite core particle, between the organosilicon coating layer and the surface of the core particles. The magnetic recording medium has not only an excellent durability and a good electromagnetic performance, but also a low light transmittance, a small surface resistivity and an excellent surface smoothness.

摘要翻译： 由非磁性基膜和含有粘合剂树脂，磁性颗粒和作为平均直径为0.08至1.0μm的填料黑色复合赤铁矿颗粒的磁记录层组成的磁记录介质。 复合颗粒具有表面涂覆有机硅化合物的赤铁矿颗粒核。 在有机硅涂层上形成炭黑涂层。 此外，赤铁矿芯颗粒可以在赤铁矿核心颗粒的表面，有机硅涂层和芯颗粒的表面之间形成氧化物或氢氧化物涂层。 磁记录介质不仅具有优异的耐久性和良好的电磁性能，而且具有低透光率，小的表面电阻率和优异的表面平滑度。

公开(公告)号：US06689452B2

公开(公告)日：2004-02-10

申请号：US10128569

申请日：2002-04-24

申请人： Mamoru Kamigaki ,  Seiji Ishitani ,  Hiroko Morii

发明人： Mamoru Kamigaki ,  Seiji Ishitani ,  Hiroko Morii

IPC分类号： G11B5706

CPC分类号： G11B5/712 ,  G11B5/708 ,  G11B5/738 ,  Y10T428/2995

摘要： A magnetic recording medium including a non-magnetic base film; and a magnetic recording layer formed on the non-magnetic base film. The magnetic recording layer contains a filler, a binder resin and surface-modified magnetic particles having an average particle diameter of 0.01 to 0.7 &mgr;m and contains magnetic particles and a silane monomer coat formed on surface of the magnetic particle by a dry-mixing method.

摘要翻译： 一种包括非磁性基膜的磁记录介质; 以及形成在非磁性基膜上的磁记录层。 磁记录层含有平均粒径为0.01〜0.7μm的填料，粘合剂树脂和表面改性磁性粒子，并含有通过干式混合法形成在磁性颗粒的表面上的磁性粒子和硅烷单体涂层。

公开(公告)号：US06767611B2

公开(公告)日：2004-07-27

申请号：US10152345

申请日：2002-05-22

申请人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Yasuyuki Tanaka ,  Keisuke Iwasaki

发明人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Yasuyuki Tanaka ,  Keisuke Iwasaki

IPC分类号： G11B5706

CPC分类号： G11B5/712 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/2996 ,  Y10T428/31663

摘要： A magnetic recording medium using black magnetic acicular composite particles produced by forming a single carbon black coat between the surface of magnetic acicular cobalt-coated iron oxide particle or magnetic acicular metal particle and a coating comprising at least one organosilicon compound, in an amount of from more than 10 to 40 parts by weight based on 100 parts by weight of the magnetic acicular particles, exhibits not only a smooth surface, a smaller light transmittance and a lower surface electrical resistivity value, but also a small friction coefficient and an excellent running durability.

公开(公告)号：US07432314B2

公开(公告)日：2008-10-07

申请号：US10319849

申请日：2002-12-16

申请人： Mamoru Kamigaki ,  Hiroko Morii ,  Kazuyuki Hayashi ,  Toru Iwaki

发明人： Mamoru Kamigaki ,  Hiroko Morii ,  Kazuyuki Hayashi ,  Toru Iwaki

IPC分类号： C09D11/00

CPC分类号： B82Y30/00 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C09B67/0002 ,  C09B67/0022 ,  C09C1/021 ,  C09C1/043 ,  C09C1/309 ,  C09C1/3692 ,  C09C3/006

摘要： A functional material comprising fine coloring particles having an average primary particle diameter of 1 to 50 nm in a dried state, and having a BET specific surface area value of 30 to 500 m2/g and a light transmittance of not less than 80%. The functional material composed of fine coloring particles, exhibits not only an excellent transparency but also a high tinting strength and a clear hue.

摘要翻译： 一种功能材料，其在干燥状态下包含平均一次粒径为1〜50nm的细着色颗粒，BET比表面积值为30〜500m 2 / g，透光率 不低于80％。 由细着色颗粒组成的功能材料不仅具有优异的透明性，而且还具有高的着色力和清晰的色调。

公开(公告)号：US6019834A

公开(公告)日：2000-02-01

申请号：US35054

申请日：1998-03-05

申请人： Kazuyuki Hayashi ,  Mineko Ohsugi ,  Hiroko Morii ,  Mamoru Kamigaki

发明人： Kazuyuki Hayashi ,  Mineko Ohsugi ,  Hiroko Morii ,  Mamoru Kamigaki

IPC分类号： B05D7/24 ,  C08J3/12 ,  C09B67/08 ,  C09C3/00 ,  C09C3/08 ,  C09D5/00 ,  C09D5/02 ,  C09D7/00 ,  C09D7/12 ,  C09C1/00

CPC分类号： B82Y30/00 ,  C09B67/0008 ,  C09C3/006 ,  C09C3/08 ,  C09D7/007 ,  C09D7/1225 ,  C09D7/1275 ,  C09D7/1283 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/20 ,  C01P2004/32 ,  C01P2004/38 ,  C01P2004/41 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/86 ,  C01P2006/12 ,  C01P2006/60 ,  C01P2006/80 ,  C08K3/0033 ,  C08K9/04 ,  Y10T428/2991

摘要： A pigment of the present invention comprises:pigment particle as core particle;a lower coat formed on at least a part of surface of the pigment particle, comprising squaric acid, polyol having an anthraquinone skeleton represented by the general formula (I): ##STR1## wherein m is an integer of 0 to 4, n is an integer of 0 to 4 and m+n is an integer of 2 to 4,or a mixture of the squaric acid and the polyol having an anthraquinone skeleton represented by the general formula (I); andan upper coat formed on at least a part of surface of the obtained particle, comprising at least one alkylene glycol represented by the general formula (II):C.sub.q H.sub.2q (OH).sub.2 (II)wherein q is an integer of 2 to 10.Such pigment has excellent dispersion facility, dispersion homogeneity and dispersion stability, and is suitably used for not only organic solvent-type paints but also water-based paints.

摘要翻译： 本发明的颜料包括：作为核心颗粒的颜料颗粒; 在所述颜料颗粒的表面的至少一部分上形成的下层，包含方酸，具有由通式（I）表示的蒽醌骨架的多元醇：其中，m为0〜4的整数，n为0以下的整数 至4，m + n为2〜4的整数，或由通式（I）表示的具有蒽醌骨架的方酸和多元醇的混合物。 以及在所得颗粒的至少一部分表面上形成的上涂层，其包含至少一种由通式（II）表示的亚烷基二醇：CqH2q（OH）2（II），其中q为2至10的整数。 这种颜料具有优异的分散性，分散均匀性和分散稳定性，不仅适用于有机溶剂型涂料，而且适用于水性涂料。

公开(公告)号：US06531211B1

公开(公告)日：2003-03-11

申请号：US09577939

申请日：2000-05-25

申请人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Yasuyuki Tanaka ,  Keisuke Iwasaki

发明人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Yasuyuki Tanaka ,  Keisuke Iwasaki

IPC分类号： G11B5706

CPC分类号： G11B5/712 ,  Y10T428/25 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/2998

摘要： Black plate-shaped ferrite composite particles with magnetoplumbite structure, particle size of 0.01 to 0.2 &mgr;m are surface coated with an organosilicon compound(s) and a carbon black coating is applied over the organosilicon coating layer. Optionally, a coating of silicon or aluminum oxide or hydroxide is provided on the surface of the black plate-shaped composite particles and below the organosilicon layer. The particles have a high blackness and when applied to a non-magnetic substrate with a binder resin to form a magnetic medium provide low light transmittance, low surface resistivity and a smooth surface.

摘要翻译： 具有磁铅矿结构的黑色板状铁素体复合颗粒，粒径为0.01至0.2μm的表面涂覆有机硅化合物，并在有机硅涂层上施加炭黑涂层。 任选地，在黑色板状复合颗粒的表面上和有机硅层下面提供硅或氧化铝或氢氧化物的涂层。 颗粒具有高的黑度，并且当用粘合剂树脂施加到非磁性基材以形成磁性介质时，提供低的透光率，低的表面电阻率和光滑的表面。

公开(公告)号：US06511733B2

公开(公告)日：2003-01-28

申请号：US09805374

申请日：2001-03-14

申请人： Kazuyuki Hayashi ,  Mamoru Kamigaki ,  Hiroko Morii

发明人： Kazuyuki Hayashi ,  Mamoru Kamigaki ,  Hiroko Morii

IPC分类号： B32B516

CPC分类号： G11B5/735 ,  Y10T428/24421 ,  Y10T428/254 ,  Y10T428/257 ,  Y10T428/265 ,  Y10T428/2991 ,  Y10T428/2995 ,  Y10T428/2998

摘要： A magnetic recording medium comprises: a non-magnetic base film; a magnetic recording layer formed on one surface of the non-magnetic base film, comprising a binder resin and magnetic particles; and a back coat layer formed on a surface opposite of the non-magnetic base film to the surface on which the magnetic recording layer is formed, comprising a binder resin and plate-shaped non-magnetic composite particles having an average plate surface diameter of 0.1 to 5.0 &mgr;m, an average thickness of 0.001 to 0.1 &mgr;m and a plate ratio (average plate surface diameter/average thickness) of 5:1 to 100:1, wherein the plate-shaped non-magnetic composite particles comprise: plate-shaped hematite particles as core particles; a coating layer formed on surface of said plate-shaped hematite particle, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtained from an alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes; and a carbon black coat formed on said coating layer comprising at least one organosilicon compound, in an amount of from more than 1 to 30 parts by weight based on 100 parts by weight of said plate-shaped hematite particles.

摘要翻译： 磁记录介质包括：非磁性基膜;在非磁性基膜的一个表面上形成的磁记录层，包括粘合剂树脂和磁性颗粒; 和在与非磁性基膜相对的表面上形成的背涂层与形成有磁记录层的表面形成，包括粘合剂树脂和板状非磁性复合材料颗粒，其平均板表面直径为0.1至 5.0μm，平均厚度为0.001〜0.1μm，板比（平均板面直径/平均厚度）为5:1〜100:1，其中板状非磁性复合颗粒包括：板状赤铁矿颗粒 作为核心颗粒; 所述板状赤铁矿颗粒的表面上形成的涂层包含至少一种选自以下的有机硅化合物：（1）由烷氧基硅烷化合物得到的有机硅烷化合物，和（2）聚硅氧烷或改性聚硅氧烷; 和基于100重量份的所述板状赤铁矿颗粒，在包含至少一种有机硅化合物的所述涂层上形成的炭黑涂层的量为大于1至30重量份。

公开(公告)号：US06294242B1

公开(公告)日：2001-09-25

申请号：US09557631

申请日：2000-04-21

申请人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Yasuyuki Tanaka ,  Keisuke Iwasaki

发明人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Yasuyuki Tanaka ,  Keisuke Iwasaki

IPC分类号： G11B5706

CPC分类号： B82Y30/00 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/50 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/80 ,  C01P2004/82 ,  C01P2004/84 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/42 ,  C01P2006/60 ,  C01P2006/62 ,  C01P2006/80 ,  C09C3/006 ,  C09C3/12 ,  G11B5/712 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/31663

摘要： A magnetic recording medium of the present invention comprises: a non-magnetic base film; and a magnetic recording layer comprising a binder resin and black magnetic acicular composite particles having an average particle diameter of 0.051 to 0.72 &mgr;m, comprising: magnetic acicular core particles; a coating formed on surface of said magnetic acicular core particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, (2) polysiloxanes or modified polysiloxanes, and (3) fluoroalkyl organosilane compounds obtainable from fluoroalkylsilane compounds; and a carbon black coat formed on said coating layer comprising said organosilicon compound, in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of said magnetic acicular particles. Such a magnetic recording medium capable of not only showing a low light transmittance and a low surface resistivity even when the amount of carbon black fine particles added to a magnetic recording layer thereof is as small as possible, but also having a smooth surface.

摘要翻译： 本发明的磁记录介质包括：非磁性基膜; 以及包含粘结剂树脂和平均粒径为0.051〜0.72μm的黑色磁性针状复合粒子的磁记录层，其特征在于，包括：针状核心粒子; 包含至少一种有机硅化合物，所述有机硅化合物选自：（1）由烷氧基硅烷化合物得到的有机硅烷化合物，（2）聚硅氧烷或改性聚硅氧烷，和（3）氟代烷基有机硅烷化合物 可从氟代烷基硅烷化合物获得; 以及基于100重量份的所述磁性针状颗粒，在包含所述有机硅化合物的所述涂层上形成的炭黑涂层，其量为0.5至10重量份。这样的磁记录介质不仅可以显示低光 即使当添加到其磁记录层中的炭黑细颗粒的量尽可能小时，也具有平滑的表面时，透光率和低的表面电阻率。

公开(公告)号：US06863966B1

公开(公告)日：2005-03-08

申请号：US09710834

申请日：2000-11-14

申请人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Yasuyuki Tanaka ,  Keisuke Iwasaki

发明人： Kazuyuki Hayashi ,  Hiroko Morii ,  Mamoru Kamigaki ,  Yasuyuki Tanaka ,  Keisuke Iwasaki

IPC分类号： G11B5/712 ,  G11B5/66 ,  B32B3/00 ,  B32B3/02 ,  B32B5/16 ,  B32B9/00

CPC分类号： G11B5/712 ,  Y10S428/90 ,  Y10S428/926 ,  Y10T428/257 ,  Y10T428/26 ,  Y10T428/2995

摘要： A magnetic recording medium comprises: a non-magnetic base film; and a magnetic recording layer comprising a binder resin and black magnetic acicular composite particles having an average particle diameter of 0.051 to 0.35 μm, comprising magnetic acicular cobalt-coated iron oxide particles or magnetic acicular metal particles containing iron as a main component, a coating formed on surface of the magnetic acicular particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and a carbon black coat formed on the coating layer comprising said organosilicon compound, in an amount of from more than 10 to 40 parts by weight based on 100 parts by weight of said magnetic acicular particles. Such a magnetic recording medium exhibits not only a smooth surface, a smaller light transmittance and a lower surface electrical resistivity value, but also a small friction coefficient and an excellent running durability.

摘要翻译： 磁记录介质包括：非磁性基膜; 以及包含粘结剂树脂和平均粒径为0.051-0.35μm的黑色磁性针状复合颗粒的磁性记录层，包括磁性针状钴包覆氧化铁颗粒或以铁为主要成分的磁性针状金属颗粒，在表面上形成的涂层 包含至少一种选自以下的有机硅化合物：（1）由烷氧基硅烷化合物得到的有机硅烷化合物和（2）聚硅氧烷或改性聚硅氧烷，以及在包含所述有机硅的涂层上形成的炭黑涂层 化合物，相对于100重量份的所述磁针状颗粒，其含量为10-40重量份以上。这样的磁记录介质不仅表现出光滑的表面，较小的透光率和较低的表面电阻率值 ，而且摩擦系数小，运行耐久性好。

公开(公告)号：US06569530B2

公开(公告)日：2003-05-27

申请号：US10061357

申请日：2002-02-04

申请人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Mamoru Kamigaki ,  Hiroko Morii

发明人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Mamoru Kamigaki ,  Hiroko Morii

IPC分类号： G11B5706

CPC分类号： G11B5/712 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/2998

摘要： A magnetic recording medium comprises: a non-magnetic base film; and a magnetic recording layer comprising a binder resin and magnetic composite particles having an average particle diameter of 0.02 to 0.70 &mgr;m, comprising magnetic particles as core particles, a coating formed on surface of said magnetic particle, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and a phthalocyanine-based pigments coat formed on said coating layer comprising said organosilicon compound, in an amount of 1 to 100 parts by weight based on 100 parts by weight of said magnetic particles.

摘要翻译： 磁记录介质包括：非磁性基膜; 以及包含粘合剂树脂的磁记录层和平均粒径为0.02-0.70μm的磁性复合颗粒，其包含作为核心颗粒的磁性颗粒，在所述磁性颗粒的表面上形成的涂层，包含至少一种选自以下的有机硅化合物： ：（1）由烷氧基硅烷化合物得到的有机硅烷化合物和（2）聚硅氧烷或改性聚硅氧烷，以及包含所述有机硅化合物的所述涂层上形成的酞菁类颜料涂层，其量为100至100重量份，基于100 所述磁性颗粒重量份。