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    2.
    发明专利
    未知

    公开(公告)号：DE602005002162D1

    公开(公告)日：2007-10-11

    申请号：DE602005002162

    申请日：2005-02-28

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： OKADA ISSEI ,  SHIMODA KOHEI

    IPC: C09D11/00 ,  H01B1/22 ,  H05K1/09 ,  H05K3/12

    Abstract: A metallic colloidal solution (a) includes a water-based dispersion medium that is easy in handling with regard to safety and environment and metallic particles having a uniform particle diameter and being excellent in properties such as conductivity and (b) has properties suitable for various printing methods and ink-applying methods. In addition, an inkjet-use metallic ink incorporating the metallic colloidal solution has properties suitable for the inkjet printing method. The metallic particles are deposited by reducing metallic ions in water and have a primary-particle diameter of at most 200 nm. The dispersion medium is made of a mixed solvent of water and a water-soluble organic solvent. The metallic particles are dispersed in the dispersion medium under the presence of a dispersant having a molecular weight of 200 to 30,000.

    3.
    发明专利
    未知

    公开(公告)号：DE602004018351D1

    公开(公告)日：2009-01-22

    申请号：DE602004018351

    申请日：2004-06-24

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： SHIMODA KOHEI ,  OKADA ISSEI ,  MAJIMA MASATOSHI

    IPC: B22F1/00 ,  B01J13/00 ,  B22F1/02 ,  B22F9/24 ,  H01B1/22

    Abstract: When fine metal particles of a nanometer size are handled in a state of colloidal particles, it is difficult to handle them and the range of the selection of the solvent to be used is limited. The invention offers a granular metal powder that is produced by the steps of (a) preparing a solution comprising (a1) water or an organic solvent, (a2) an organic compound capable of being adsorbed on the surface of metal particles, and (a3) metal particles having an average particle diameter of at least 1 nm and at most 100 nm and (b) removing most of the water or organic solvent form the solution and that has an apparent density of at least 1.0 g/ml and at most 5.0 g/ml. The granular metal powder can be handled as a dry metal powder and is readily redispersed in a solvent.

    4.
    发明专利
    未知

    公开(公告)号：DE602005002162T2

    公开(公告)日：2008-05-29

    申请号：DE602005002162

    申请日：2005-02-28

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： OKADA ISSEI ,  SHIMODA KOHEI

    IPC: C09D11/00 ,  H01B1/22 ,  H05K1/09 ,  H05K3/12

    Abstract: A metallic colloidal solution (a) includes a water-based dispersion medium that is easy in handling with regard to safety and environment and metallic particles having a uniform particle diameter and being excellent in properties such as conductivity and (b) has properties suitable for various printing methods and ink-applying methods. In addition, an inkjet-use metallic ink incorporating the metallic colloidal solution has properties suitable for the inkjet printing method. The metallic particles are deposited by reducing metallic ions in water and have a primary-particle diameter of at most 200 nm. The dispersion medium is made of a mixed solvent of water and a water-soluble organic solvent. The metallic particles are dispersed in the dispersion medium under the presence of a dispersant having a molecular weight of 200 to 30,000.

    METAL COATING FILM, METHOD FOR FORMING SAME, AND METAL WIRING
    6.
    发明公开
    METAL COATING FILM, METHOD FOR FORMING SAME, AND METAL WIRING 有权
    METALLBESCHICHTUNG薄膜，其制造方法接线及金属

    公开(公告)号：EP1887106A4

    公开(公告)日：2009-06-03

    申请号：EP06746541

    申请日：2006-05-17

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： OKADA ISSEI ,  SHIMODA KOHEI

    IPC: C23C26/00 ,  C22C5/06 ,  H01B1/22 ,  H01B5/14 ,  H01B13/00

    CPC classification number: C23C24/08 ,  C22C5/06 ,  C23C24/00 ,  C23C26/00 ,  H01B1/02 ,  H01B1/22 ,  H05K1/097 ,  Y10T428/12 ,  Y10T428/12014 ,  Y10T428/24355 ,  Y10T428/24917

    Abstract: Disclosed is a metal coating film formed by applying a metal particle dispersion containing meal fine particles, water and a dispersing agent having a molecular weight of 2,000-30,000 to the surface of a base and firing it. This metal coating film is composed of an alloy containing (1) Ag and (2) at least one metal selected from the group consisting of Au, Pt, Pd, Ru, Ir, Sn, Cu, Ni, Fe, Co, Ti and In, in which alloy the Ag content is 80-99.9 at% relative to the total alloy and the average crystal grain size is 0.2-5 µm. By having such a constitution, the metal coating film has low surface roughness, excellent smoothness and excellent denseness, while exhibiting excellent adhesion to the base and excellent etching properties. Also disclosed are a method for forming such a metal coating film, and a metal wiring obtained by patterning such a metal coating film. The coating film is fired at a temperature not more than 700°C.

    GRANULAR METAL POWDER
    7.
    发明公开
    GRANULAR METAL POWDER 有权
    粒状金属粉末

    公开(公告)号：EP1674176A4

    公开(公告)日：2007-11-14

    申请号：EP04746778

    申请日：2004-06-24

    Applicant: SUMITOMO ELECTRIC INDUSTRIES

    Inventor： SHIMODA KOHEI ,  OKADA ISSEI ,  MAJIMA MASATOSHI

    IPC: B22F1/00 ,  B01J13/00 ,  B22F1/02 ,  B22F9/24 ,  H01B1/22

    CPC classification number: H01B1/22 ,  B01J13/0043 ,  B22F1/0096 ,  B22F2999/00 ,  B22F1/0018

    Abstract: Nanometer-size fine metal particles in a colloidal state have poor handleability and the choice of solvents usable therewith is limited. A granular metal powder is provided which is characterized by being obtained from a solution comprising water or an organic solvent, an organic compound capable of being adsorbed onto metal particle surfaces, and metal particles having an average particle diameter of 1 to 100 nm by removing most of the water or organic solvent. It is characterized also by having a bulk density of 1.0 to 5.0 g/mL. This granular metal powder can be handled in a dry state as metal particles and can be easily redispersed in solvents.

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