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    ELONGATED ABRASIVE PARTICLES, METHOD OF MAKING THE SAME, AND ABRASIVE ARTICLES CONTAINING THE SAME
    1.
    发明申请
    ELONGATED ABRASIVE PARTICLES, METHOD OF MAKING THE SAME, AND ABRASIVE ARTICLES CONTAINING THE SAME 审中-公开

    公开(公告)号：WO2019069157A1

    公开(公告)日：2019-04-11

    申请号：PCT/IB2018/057061

    申请日：2018-09-14

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： ERICKSON, Dwight D. ,  ADEFRIS, Negus B.

    IPC: C09K3/14

    Abstract: A method of making elongated abrasive particles includes five steps. Step 1) includes providing a mold having parallel linear grooves, partially interrupted at predetermined intervals by transverse obstructions. Step 2) includes filling the parallel linear grooves with a flowable abrasive particle precursor composition. Step 3) includes at least partially drying the flowable abrasive particle precursor composition to form an at least partially dried abrasive particle precursor composition. Step 4) includes separating that composition from the mold, thereby forming elongated precursor abrasive particles having a shape corresponding to portions of the parallel linear grooves disposed between the transverse obstructions. At least one of the first and second opposite ends of the elongated precursor abrasive particles comprises both a molded portion and a fractured portion. Step 5) converts the elongated precursor abrasive particles into elongated abrasive particles. Elongated abrasive particles preparable by the method and abrasive articles containing them are also disclosed.

    ABRASIVE PARTICLES
    4.
    发明申请
    ABRASIVE PARTICLES 审中-公开

    公开(公告)号：WO2018231777A1

    公开(公告)日：2018-12-20

    申请号：PCT/US2018/037023

    申请日：2018-06-12

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： LARA RODRIGUEZ, Laura M. ,  ERICKSON, Dwight D. ,  JANGU, Chainika ,  KOENIG, Amelia W.

    IPC: C04B35/111 ,  C09K3/14 ,  C04B35/628 ,  C04B35/117

    Abstract: The formed ceramic abrasive particle includes a plurality of ceramic oxides. The particle further includes a first plurality of oxides, a second plurality of oxides, or a mixture thereof. The first plurality of oxides includes an oxide of yttrium, praseodymium, samarium, ytterbium, neodymium, lanthanum, gadolinium, dysprosium, erbium, or a combination thereof. The second plurality of oxides includes an oxide of iron, magnesium, zinc, silicon, cobalt, nickel, zirconium, hafnium, chromium, cerium, titanium, or a combination thereof. The formed ceramic abrasive particle further includes a plurality of edges, each edge having a length independently ranging from about 0.1 µm to about 5000 µm. The formed ceramic abrasive particle further includes a tip defined by a junction of at least two of the edges, the tip can have a radius of curvature ranging from about 0.5 µm to about 80 µm.

    SHAPED, FRACTURED ABRASIVE PARTICLE, ABRASIVE ARTICLE USING SAME AND METHOD OF MAKING
    5.
    发明申请
    SHAPED, FRACTURED ABRASIVE PARTICLE, ABRASIVE ARTICLE USING SAME AND METHOD OF MAKING 审中-公开

    公开(公告)号：WO2009085841A9

    公开(公告)日：2009-07-09

    申请号：PCT/US2008/087192

    申请日：2008-12-17

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： ERICKSON, Dwight D. ,  CULLER, Scott R. ,  ADEFRIS, Negus B. ,  BODEN, John T. ,  HAAS, John D.

    IPC: B24D3/00 ,  B24D11/00

    Abstract: Precursor alpha alumina abrasive particles in a mold are subjected to a drying process that cracks or fractures at least a majority of the precursor abrasive particles into at least two pieces thereby producing abrasive shards having a smaller size than the mold cavity from which they were made. The smaller abrasive shards, once formed, could be reassembled like jigsaw puzzle pieces to reproduce the original cavity shape of the mold from which they were made. The cracking or fracturing of the precursor abrasive particles is believed to occur by ensuring that the surface tension of the abrasive dispersion to the walls of the mold is greater than the internal attractive forces of the abrasive dispersion as the abrasive dispersion is dried within the mold cavity.

    ELONGATE SHAPED ABRASIVE PARTICLES, METHODS OF MAKING THE SAME, AND ABRASIVE ARTICLE INCLUDING THE SAME
    9.
    发明申请
    ELONGATE SHAPED ABRASIVE PARTICLES, METHODS OF MAKING THE SAME, AND ABRASIVE ARTICLE INCLUDING THE SAME 审中-公开
    细长形状的磨料颗粒及其制备方法和含有相同物质的磨石制品

    公开(公告)号：WO2017172470A1

    公开(公告)日：2017-10-05

    申请号：PCT/US2017/023726

    申请日：2017-03-23

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： ERICKSON, Dwight D.

    IPC: B24D11/00 ,  C09K3/14 ,  B24D3/14 ,  B24D3/20 ,  B24D18/00 ,  C04B35/10

    Abstract: An elongate shaped abrasive particle comprises an elongate shaped ceramic body having opposed first and second ends joined to each other by at least two longitudinal sidewalls. At least one of the at least two longitudinal sidewalls is concave along its length. At least one of the first and second ends is a fractured surface. Methods of making elongate shaped abrasive particles and abrasive articles including them are also disclosed.

    Abstract translation: 细长形状的磨料颗粒包括细长形状的陶瓷体，其具有相对的第一和第二端部，所述第一和第二端部通过至少两个纵向侧壁彼此连接。 至少两个纵向侧壁中的至少一个纵向侧壁沿其长度凹入。 第一和第二端中的至少一个是断裂表面。 还公开了制造细长成形磨粒的方法和包括它们的磨料制品。

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