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    ABRASIVE PARTICLES
    1.
    发明公开
    ABRASIVE PARTICLES 审中-公开

    公开(公告)号：US20230332029A1

    公开(公告)日：2023-10-19

    申请号：US18301766

    申请日：2023-04-17

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Laura M. Lara Rodriguez ,  Dwight D. Erickson ,  Chainika Jangu ,  Amelia W. Koenig

    IPC: C09K3/14 ,  C04B35/117 ,  C04B35/64

    CPC classification number: C09K3/1409 ,  C04B35/117 ,  C04B35/64 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3272 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/606

    Abstract: A method of making a formed ceramic abrasive particle is presented that includes molding a dispersion of a ceramic abrasive particle precursor mixture. The method also includes drying the molded dispersion to form a ceramic abrasive particle particle precursor. The method also includes calcining the ceramic abrasive particle precursor. The method also includes sintering the ceramic abrasive particle precursor to form the formed ceramic abrasive particle. The method also includes impregnating the ceramic abrasive particle precusor with a mixture. The mixture includes one or more of a first group consisting of: an oxide of yttrium, praseodymium, samarium, ytterbium, neodymium, lanthanum, gadolinium, dysprosium, and erbium or one or more of a second group consisting of: oxide of iron, magnesium, zinc, silicon, cobalt, nickel, zirconium, hafnium, chromium, cerium, titanium. Impregnating the ceramic abrasive particle precursor occurs after drying, calcining or sintering.

    Transfer assisted screen printing method of making shaped abrasive particles and the resulting shaped abrasive particles
    6.
    发明授权
    Transfer assisted screen printing method of making shaped abrasive particles and the resulting shaped abrasive particles 有权
    转移辅助丝网印刷方法制造成形磨料颗粒和所得成形磨料颗粒

    公开(公告)号：US09150765B2

    公开(公告)日：2015-10-06

    申请号：US13908268

    申请日：2013-06-03

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Dennis G. Welygan ,  Dwight D. Erickson ,  John T. Boden

    IPC: C04B35/10 ,  C09K3/14 ,  B41M1/12

    CPC classification number: C09K3/1409 ,  B01J2/006 ,  B01J2/20 ,  B01J2/26 ,  B41M1/12 ,  C04B35/10 ,  Y10T428/2982

    Abstract: Shaped ceramic articles can be obtained by screen printing the desired shapes from a dispersion of a precursor of the ceramic onto a receiving surface using a transfer assisted technique that applies a differential pressure, at least partially drying the screen printed shapes, and firing them to generate the shaped ceramic articles. Shaped abrasive particles made using lower viscosity sol gels that tended to flow or creep after the screen printing formation were found to have higher grinding performance over screen printed shaped abrasive particles made with higher viscosity sol gels.

    Abstract translation: 通过使用传递辅助技术将陶瓷前体的分散体丝网印刷所需形状，形成陶瓷制品，所述转移辅助技术施加差压，至少部分干燥丝网印刷形状，并将其烧制以产生 成型陶瓷制品。 发现在丝网印刷形成后倾向于流动或蠕变的较低粘度溶胶凝胶制成的成型磨料颗粒在用较高粘度溶胶凝胶制成的丝网印刷成形磨料颗粒上具有更高的研磨性能。

    Elongated abrasive particles, method of making the same, and abrasive articles containing the same
    8.
    发明授权
    Elongated abrasive particles, method of making the same, and abrasive articles containing the same 有权

    公开(公告)号：US11274237B2

    公开(公告)日：2022-03-15

    申请号：US16649031

    申请日：2018-09-14

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Dwight D. Erickson ,  Negus B. Adefris

    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 ARTICLE CONTAINING ELONGATED ABRASIVE PARTICLES
    9.
    发明申请
    ABRASIVE ARTICLE CONTAINING ELONGATED ABRASIVE PARTICLES 有权

    公开(公告)号：US20210301186A1

    公开(公告)日：2021-09-30

    申请号：US17335439

    申请日：2021-06-01

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Dwight D. Erickson ,  Negus B. Adefris

    IPC: C09K3/14

    Abstract: An abrasive article comprises elongated abrasive particles retained in at least one binder. The elongated abrasive particles comprise a ceramic body bounded by at least two longitudinally-oriented contiguous surfaces and first and second ends separated by the at least two longitudinally-oriented surfaces. At least one of the first and second ends comprises both a molded portion and a fractured portion.

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