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    Silver micropowder having excellent affinity for polar medium, and silver ink
    1.
    发明授权
    Silver micropowder having excellent affinity for polar medium, and silver ink 有权
    对极性介质具有极好的亲和性的银微粉和银墨

    公开(公告)号：US08486307B2

    公开(公告)日：2013-07-16

    申请号：US12811598

    申请日：2008-12-25

    申请人： Kimitaka Sato ,  Shinya Sasaki ,  Taro Nakanoya

    发明人： Kimitaka Sato ,  Shinya Sasaki ,  Taro Nakanoya

    IPC分类号： H01B1/22 ,  H01B1/02

    CPC分类号： B22F9/24 ,  B22F1/0018 ,  B22F1/0022 ,  B22F1/0044 ,  B22F1/0062 ,  B22F2998/00 ,  B22F2999/00 ,  B82Y30/00 ,  C09D11/52 ,  H01B1/22 ,  Y10T428/2991 ,  B22F1/0059 ,  B22F2301/255 ,  B22F2304/054

    摘要： Provided are silver nanoparticles having a good affinity (that is, dispersibility) for y-butyrolactone (C4H6O2), an organic solvent which has a relatively high boiling point though having a relatively small molecular weight, and has a low viscosity and a low surface tension and which has little irritating odor. The above problems are solved by providing a silver micropowder excellent in affinity for at least y-butyrolactone, which comprises silver particles processed to adsorb at least one of 1,4-dihydroxy-2-naphthoic acid (C11H8O4) and gallic acid (C7H6O5) on the surfaces thereof and having an X-ray crystal particle diameter DX of from 1 to 40 nm, preferably from 1 to 15 nm. The invention also provides a silver ink obtained by dispersing silver particles processed to adsorb an organic compound having a carboxyl group on the surfaces thereof and having an X-ray crystal particle diameter DX of from 1 to 40 nm, preferably from 1 to 15 nm (or having a mean particle diameter DTEM, as measured through TEM microscopy, of from 3 to 40 nm, preferably from 4 to 15 nm), in y-butyrolactone.

    摘要翻译： 提供了对于γ-丁内酯（C 4 H 6 O 2）具有良好的亲和性（即分散性）的银纳米颗粒，这种有机溶剂虽然具有相对较小的分子量，但具有较高的沸点，并且具有低粘度和低表面张力 并且几乎没有刺激性气味。 通过提供对至少γ-丁内酯的亲和性优异的银微粉来解决上述问题，所述银微粒包括被处理吸附1,4-二羟基-2-萘甲酸（C 11 H 8 O 4）和没食子酸（C 7 H 6 O 5）中的至少一种的银粒子， 其表面上的X射线晶体粒径DX为1〜40nm，优选为1〜15nm。 本发明还提供一种银粉，其通过将经加工的银颗粒分散在其表面上吸附具有羧基的有机化合物并且具有1至40nm，优选1至15nm的X射线晶体粒径DX（ 或具有3至40nm，优选4至15nm的平均粒径DTEM（通过TEM显微镜测量），在γ-丁内酯中。

    SILVER MICROPOWDER HAVING EXCELLENT AFFINITY FOR POLAR MEDIUM, AND SILVER INK
    2.
    发明申请
    SILVER MICROPOWDER HAVING EXCELLENT AFFINITY FOR POLAR MEDIUM, AND SILVER INK 有权
    具有极性介质的优质微波炉和银墨水

    公开(公告)号：US20100288159A1

    公开(公告)日：2010-11-18

    申请号：US12811598

    申请日：2008-12-25

    申请人： Kimitaka Sato ,  Shinya Sasaki ,  Taro Nakanoya

    发明人： Kimitaka Sato ,  Shinya Sasaki ,  Taro Nakanoya

    IPC分类号： C09D11/00 ,  B32B5/16

    CPC分类号： B22F9/24 ,  B22F1/0018 ,  B22F1/0022 ,  B22F1/0044 ,  B22F1/0062 ,  B22F2998/00 ,  B22F2999/00 ,  B82Y30/00 ,  C09D11/52 ,  H01B1/22 ,  Y10T428/2991 ,  B22F1/0059 ,  B22F2301/255 ,  B22F2304/054

    摘要： Provided are silver nanoparticles having a good affinity (that is, dispersibility) for γ-butyrolactone (C4H6O2), an organic solvent which has a relatively high boiling point though having a relatively small molecular weight, and has a low viscosity and a low surface tension and which has little irritating odor.The above problems are solved by providing a silver micropowder excellent in affinity for at least γ-butyrolactone, which comprises silver particles processed to adsorb at least one of 1,4-dihydroxy-2-naphthoic acid (C11H8O4) and gallic acid (C7H6O5) on the surfaces thereof and having an X-ray crystal particle diameter Dx of from 1 to 40 nm, preferably from 1 to 15 nm. The invention also provides a silver ink obtained by dispersing silver particles processed to adsorb an organic compound having a carboxyl group on the surfaces thereof and having an X-ray crystal particle diameter Dx of from 1 to 40 nm, preferably from 1 to 15 nm (or having a mean particle diameter DTEM, as measured through TEM microscopy, of from 3 to 40 nm, preferably from 4 to 15 nm), in γ-butyrolactone.

    摘要翻译： 本发明提供对γ-丁内酯（C 4 H 6 O 2）具有良好的亲和性（即分散性）的银纳米颗粒，其是具有相对较高沸点的有机溶剂，虽然具有较小的分子量，并且具有低粘度和低表面张力 并且几乎没有刺激性气味。 通过提供一种对至少γ-丁内酯的亲和性优异的银微粉来解决上述问题，所述银微粒包含加工成吸附1,4-二羟基-2-萘甲酸（C 11 H 8 O 4）和没食子酸（C 7 H 6 O 5）中的至少一种的银粒子， 其表面上的X射线结晶粒径Dx为1〜40nm，优选为1〜15nm。 本发明还提供一种银粉，其通过将经加工的银颗粒分散在其表面上吸附具有羧基的有机化合物并具有1至40nm，优选1至15nm的X射线晶体粒径Dx（ 或者通过TEM显微镜测得的平均粒径DTEM为3〜40nm，优选为4〜15nm）的γ-丁内酯。

    SILVER MICROPOWDER, SILVER INK, SILVER COATING, AND METHODS FOR PRODUCTION OF THESE MATERIALS
    3.
    发明申请
    SILVER MICROPOWDER, SILVER INK, SILVER COATING, AND METHODS FOR PRODUCTION OF THESE MATERIALS 有权
    银微波炉，银墨，银涂料，以及这些材料的生产方法

    公开(公告)号：US20100283013A1

    公开(公告)日：2010-11-11

    申请号：US12811583

    申请日：2008-12-25

    申请人： Kimitaka Sato ,  Taku Okano ,  Taro Nakanoya

    发明人： Kimitaka Sato ,  Taku Okano ,  Taro Nakanoya

    IPC分类号： H01B1/22 ,  B32B5/16 ,  C09D11/02 ,  B05D7/14

    CPC分类号： C09C1/62 ,  B22F1/0018 ,  B22F1/0022 ,  B22F9/24 ,  B22F2998/00 ,  B22F2999/00 ,  B82Y30/00 ,  C01P2002/88 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2006/40 ,  C09D5/24 ,  C09D11/52 ,  H01B1/22 ,  Y10T428/2991 ,  B22F2301/255 ,  B22F2304/054 ,  B22F1/0059

    摘要： Provided is a silver micropowder coated with a protective material and capable of more drastically reducing the sintering temperature than before. The silver micropowder comprises silver particles processed to adsorb hexylamine (C6H13—NH2) on the surfaces thereof and having a mean particle diameter DTEM of from 3 to 20 nm or an X-ray crystal particle diameter DX of from 1 to 20 nm. The silver micropowder has the property of forming a conductive film having a specific resistivity of not more than 25 μΩ·cm when it is mixed with an organic medium to prepare a silver coating material and when a coating film formed of it is fired in air at 120° C. Even when fired at 100° C., it may form a conductive film having a specific resistivity of not more than 25 μΩ·cm. The silver micropowder can be produced by mixing a silver particle dispersion, as monodispersed in an organic medium, of silver particles coated with a primary amine A having an unsaturated bond and having a molecular weight of from 200 to 400, and hexylamine, and then keeping the mixture at 5 to 80° C. with stirring to thereby form precipitated particles.

    摘要翻译： 提供涂覆有保护材料并能够比以前更显着降低烧结温度的银微粉。 银微粉包含被处理以吸附其表面上的己胺（C6H13-NH2）的银粒子，其平均粒径DTEM为3〜20nm，X射线晶体粒径DX为1〜20nm。 当与有机介质混合制备银涂料时，银微粉具有形成电阻率不大于25μΩ·cmgr·cm的导电膜的特性，并且当由其形成的涂膜在空气中焙烧时 即使在100℃下烧成，也可以形成电阻率不大于25μΩ·cm·cm的导电膜。 银微粉可以通过将单粒分散在有机介质中的银颗粒分散体涂覆在具有不饱和键并具有200-400的分子量的伯胺A的银颗粒和己胺中来制备，然后保持 该混合物在5至80℃下搅拌，从而形成沉淀的颗粒。

    Silver micropowder, silver ink, silver coating, and methods for production of these materials
    4.
    发明授权
    Silver micropowder, silver ink, silver coating, and methods for production of these materials 有权
    银微粉，银墨，银涂层，以及这些材料的制造方法

    公开(公告)号：US08916068B2

    公开(公告)日：2014-12-23

    申请号：US12811583

    申请日：2008-12-25

    申请人： Kimitaka Sato ,  Taku Okano ,  Taro Nakanoya

    发明人： Kimitaka Sato ,  Taku Okano ,  Taro Nakanoya

    IPC分类号： H01B1/22 ,  B32B5/16 ,  C09D11/02 ,  B05D7/14 ,  C09D5/24 ,  B22F1/00 ,  B22F9/24 ,  C09C1/62 ,  C09D11/52 ,  B82Y30/00

    CPC分类号： C09C1/62 ,  B22F1/0018 ,  B22F1/0022 ,  B22F9/24 ,  B22F2998/00 ,  B22F2999/00 ,  B82Y30/00 ,  C01P2002/88 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2006/40 ,  C09D5/24 ,  C09D11/52 ,  H01B1/22 ,  Y10T428/2991 ,  B22F2301/255 ,  B22F2304/054 ,  B22F1/0059

    摘要： Provided is a silver micropowder coated with a protective material and capable of more drastically reducing the sintering temperature than before. The silver micropowder comprises silver particles processed to adsorb hexylamine (C6H13—NH2) on the surfaces thereof and having a mean particle diameter DTEM of from 3 to 20 nm or an X-ray crystal particle diameter DX of from 1 to 20 nm. The silver micropowder has the property of forming a conductive film having a specific resistivity of not more than 25 μΩ·cm when it is mixed with an organic medium to prepare a silver coating material and when a coating film formed of it is fired in air at 120° C. Even when fired at 100° C., it may form a conductive film having a specific resistivity of not more than 25 μΩ·cm. The silver micropowder can be produced by mixing a silver particle dispersion, as monodispersed in an organic medium, of silver particles coated with a primary amine A having an unsaturated bond and having a molecular weight of from 200 to 400, and hexylamine, and then keeping the mixture at 5 to 80° C. with stirring to thereby form precipitated particles.

    摘要翻译： 提供涂覆有保护材料并能够比以前更显着降低烧结温度的银微粉。 银微粉包含被处理以吸附其表面上的己胺（C6H13-NH2）的银粒子，其平均粒径DTEM为3〜20nm，X射线晶体粒径DX为1〜20nm。 当与有机介质混合制备银涂料时，银微粉具有形成电阻率不大于25μΩ·cmgr·cm的导电膜的特性，并且当由其形成的涂膜在空气中焙烧时 即使在100℃下烧成，也可以形成电阻率不大于25μΩ·cm·cm的导电膜。 银微粉可以通过将单粒分散在有机介质中的银颗粒分散体涂覆在具有不饱和键并具有200-400的分子量的伯胺A的银颗粒和己胺中来制备，然后保持 该混合物在5至80℃下搅拌，从而形成沉淀的颗粒。

    Magnetic material
    5.
    发明授权
    Magnetic material 有权
    磁性材料

    公开(公告)号：US07781082B2

    公开(公告)日：2010-08-24

    申请号：US11892911

    申请日：2007-08-28

    申请人： Shin-ichi Ohkoshi ,  Shunsuke Sakurai ,  Shiro Kuroki ,  Kimitaka Sato ,  Shinya Sasaki

    发明人： Shin-ichi Ohkoshi ,  Shunsuke Sakurai ,  Shiro Kuroki ,  Kimitaka Sato ,  Shinya Sasaki

    IPC分类号： G11B5/65

    CPC分类号： C01G49/06 ,  B82Y30/00 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/84 ,  C01P2006/42 ,  G11B5/70642 ,  G11B5/714 ,  Y10T428/2982 ,  Y10T428/2991

    摘要： A magnetic material is provided that has an iron oxide phase whose principal phase is a crystal of a structure which has the same space group as ε-Fe2O3 crystal and in which Al is substituted for a portion of the Fe sites of the ε-Fe2O3 crystal. The molar ratio of Al to Fe in the iron oxide phase, when expressed as Al:Fe=x:(2−x), satisfies 0≦x≦1. The value of x is preferably in the range of 0.3 to 0.7. The average particle diameter of the powder determined from a TEM image is preferably 5 to 200 nm, more preferably 10 to 100 nm. The magnetic material has very high practical value because it enables the extremely high coercive force Hc of the ε-Fe2O3 crystal to be regulated to a level enabling utilization in magnetic recording medium and various other applications. The magnetic powder can be produced by a method combining the reverse micelle method and the sol-gel method.

    摘要翻译： 提供一种具有氧化铁相的磁性材料，该氧化铁相的主相是具有与Fe-Fe 2 O 3晶体相同空间基团的结构的结晶，并且其中Al代替一部分Fe基部分的Fe- Fe2O3晶体。 当以Al:Fe = x：（2-x）表示时，氧化铁相中的Al与Fe的摩尔比满足0

    Magnetic material
    6.
    发明申请
    Magnetic material 有权
    磁性材料

    公开(公告)号：US20080057352A1

    公开(公告)日：2008-03-06

    申请号：US11892911

    申请日：2007-08-28

    申请人： Shin-ichi Ohkoshi ,  Shunsuke Sakurai ,  Shiro Kuroki ,  Kimitaka Sato ,  Shinya Sasaki

    发明人： Shin-ichi Ohkoshi ,  Shunsuke Sakurai ,  Shiro Kuroki ,  Kimitaka Sato ,  Shinya Sasaki

    IPC分类号： G11B5/706 ,  B32B5/16 ,  C04B35/26

    CPC分类号： C01G49/06 ,  B82Y30/00 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/84 ,  C01P2006/42 ,  G11B5/70642 ,  G11B5/714 ,  Y10T428/2982 ,  Y10T428/2991

    摘要： A magnetic material is provided that has an iron oxide phase whose principal phase is a crystal of a structure which has the same space group as ε-Fe2O3 crystal and in which Al is substituted for a portion of the Fe sites of the ε-Fe2O3 crystal. The molar ratio of Al to Fe in the iron oxide phase, when expressed as Al:Fe=x:(2−x), satisfies 0≦x≦1. The value of x is preferably in the range of 0.3 to 0.7. The average particle diameter of the powder determined from a TEM image is preferably 5 to 200 nm, more preferably 10 to 100 nm. The magnetic material has very high practical value because it enables the extremely high coercive force Hc of the ε-Fe2O3 crystal to be regulated to a level enabling utilization in magnetic recording medium and various other applications. The magnetic powder can be produced by a method combining the reverse micelle method and the sol-gel method.

    摘要翻译： 提供一种磁性材料，其具有氧化铁相，其主相是具有与ε-Fe 2 O 3结晶相同的空间基团的结构的晶体，并且在 该Al取代了ε-Fe 2 O 3结晶的一部分Fe位点。 当以Al:Fe = x：（2-x）表示时，氧化铁相中的Al与Fe的摩尔比满足0

    Method for production of silver fine powder covered with organic substance, and silver fine powder
    10.
    发明授权
    Method for production of silver fine powder covered with organic substance, and silver fine powder 有权
    生产用有机物覆盖的银细粉的方法和银精细粉

    公开(公告)号：US08420165B2

    公开(公告)日：2013-04-16

    申请号：US12601977

    申请日：2008-05-28

    申请人： Kimitaka Sato ,  Balachandran Jeyadevan ,  Kazuyuki Tohji

    发明人： Kimitaka Sato ,  Balachandran Jeyadevan ,  Kazuyuki Tohji

    IPC分类号： B05D7/00

    CPC分类号： B22F1/0062 ,  B22F9/24 ,  B22F2998/00 ,  B22F1/0022

    摘要： Provided is a method for producing a silver fine powder covered with an organic substance, which comprises a step of mixing (i) a dispersion of silver particles covered with a protective material X1 that comprises an organic compound having an unsaturated bond and having a molecular weight of from 150 to 1000 in a liquid organic medium A, (ii) a protective material X2 that comprises an organic compound of which the number of the carbon atoms constituting the carbon skeleton is smaller than that of the organic compound to constitute the protective material X1, and (iii) a liquid organic medium B of which the ability to dissolve the protective material X1 therein is higher than that of the liquid organic medium A, thereby promoting the dissolution of the protective material X1 in the liquid organic medium B and the adhesion of the protective material X2 to the surface of the silver particles. Accordingly, the invention provides an industrial, large-scale mass-production system for a silver fine powder covered with a protective material having a low molecular weight, of which the sintering temperature can be greatly lowered.

    摘要翻译： 本发明提供一种覆盖有机物质的银细粉的制造方法，其特征在于，包括以下步骤：（i）由保护材料X1覆盖的银粒子的分散液，所述保护材料X1包含具有不饱和键的有机化合物，分子量 在液态有机介质A中为150〜1000，（ii）包含构成碳骨架的碳原子数小于构成保护材料X1的有机化合物的有机化合物的保护材料X2 ，和（iii）其中溶解保护材料X1的能力高于液体有机介质A的液体有机介质B，从而促进保护材料X1在液体有机介质B中的溶解和粘附 的保护材料X2到银颗粒的表面。 因此，本发明提供了一种用低分子量保护材料覆盖的银粉末的工业大规模批量生产系统，其烧结温度可以大大降低。