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公开(公告)号：US20230096825A1
公开(公告)日：2023-03-30
申请号：US17766716
申请日：2019-10-09
申请人： DIC Corporation
发明人： Shaowei Yang , Tomoki DOHI , Hironobu OKI , Jianjun YUAN , Cheng LIU , Meng LI , Wei ZHAO
摘要： A plate-like alumina particle, in which a ratio I (006)/I (113) of a peak intensity 1(006) at 20=41.6±0.3 degrees which corresponds to a (006) face to a peak intensity I(113) at 20=43.3±0.3 degrees which corresponds to a (113) face of diffraction peaks obtained by X-ray diffraction measurement using a Cu—Kα ray, is 0.2 or more. A method for manufacturing the plate-like alumina particle including mixing an aluminum compound including an aluminum element, a molybdenum compound including a molybdenum element, and a shape-controlling agent to produce a mixture and firing the mixture.
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公开(公告)号：US11859120B2
公开(公告)日：2024-01-02
申请号：US17447078
申请日：2021-09-08
发明人： Doruk O. Yener , Jennifer H. Czerepinski , Sujatha K. Iyengar , Michael D. Kavanaugh , Alan J. Brandes , Christopher Arcona , Ralph Bauer , Yves Boussant-Roux , Tracy H. Panzarella
CPC分类号： C09K3/1418 , B01J2/26 , C01F7/442 , C09K3/1409 , C09K3/1427 , Y10T428/2982
摘要： An abrasive grain is disclosed and may include an elongated body. The body may define a length (l), a width (w), and a height (h), where the length is the longest dimension. The elongated body may have a first end face, a second end face, and a side surface extending between the first end face and the second end face. The body can include a twist along an axis body.
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公开(公告)号：US11926531B2
公开(公告)日：2024-03-12
申请号：US17259932
申请日：2018-07-26
申请人： DIC Corporation
发明人： Shingo Takada , Kazuo Itoya , Jian-Jun Yuan , Takayuki Kanematsu , Masamichi Hayashi , Fumihiko Maekawa , Yoshiyuki Sano
CPC分类号： C01F7/442 , B22F1/05 , B22F9/30 , B32B5/30 , C04B35/185 , C04B35/65 , B22F2302/253 , B22F2302/256 , B22F2304/10 , B32B2255/04
摘要： Flaky alumina particles including mullite in a surface layer of the flaky alumina particles. A method for producing flaky alumina particles including forming a mixture by mixing together an aluminum compound that contains elemental aluminum, a molybdenum compound that contains elemental molybdenum, and silicon or a silicon compound that contains elemental silicon, the aluminum compound being in an amount greater than or equal to 50 mass %, calculated as Al2O3, the molybdenum compound being in an amount less than or equal to 40 mass %, calculated as MoO3, the silicon or the silicon compound being in an amount of 0.5 mass % or greater and less than 10 mass %, calculated as SiO2, relative to a total mass of the flaky alumina particles taken as 100 mass %; and firing the mixture.
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公开(公告)号：US20230131773A1
公开(公告)日：2023-04-27
申请号：US17766306
申请日：2019-10-09
申请人： DIC Corporation
发明人： Meng Li , Shingo Takada , Tomoki Dohi , Jianjun Yuan , Cheng Liu , Wei Zhao , Shaowei Yang
摘要： The composite particle of the present invention includes an alumina particle having a card-house structure which is formed of three or more pieces of plate-like alumina and in which the pieces of plate-like alumina are fixed to each other; and an inorganic coating part provided on a surface of the plate-like alumina.
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公开(公告)号：US20230272254A1
公开(公告)日：2023-08-31
申请号：US18314055
申请日：2023-05-08
发明人： Doruk O. YENER , Yves Boussant-Roux , Ralph Bauer , Jennifer H. Czerepinski , Sujatha K. Iyengar , Michael D. Kavanaugh , Alan J. Brandes , Christopher Arcona , Tracy H. Panzarella
CPC分类号： C09K3/1418 , B01J2/26 , C09K3/1427 , C09K3/1409 , C01F7/442 , Y10T428/2982
摘要： An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%.
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公开(公告)号：US20220112088A1
公开(公告)日：2022-04-14
申请号：US17312677
申请日：2019-12-20
申请人： DIC Corporation
发明人： Shingo Takada , Ryuu Koike , Jianjun Yuan , Yoshiyuki Sano
IPC分类号： C01F7/442 , C08K7/00 , C08K3/22 , C08L101/00
摘要： Plate-like alumina particles have an aspect ratio of 5 to 500, in which in solid-state 27Al NMR analysis, the longitudinal relaxation time T1 for a peak of six-coordinated aluminum at 10 to 30 ppm is 5 seconds or more at a static magnetic field strength of 14.1 T.
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公开(公告)号：US11649388B2
公开(公告)日：2023-05-16
申请号：US17130089
申请日：2020-12-22
发明人： Doruk O. Yener , Jennifer H. Czerepinski , Sujatha K. Iyengar , Michael D. Kavanaugh , Alan J. Brandes , Christopher Arcona , Ralph Bauer , Yves Boussant-Roux , Tracy H. Panzarella
CPC分类号： C09K3/1418 , B01J2/26 , C01F7/442 , C09K3/1409 , C09K3/1427 , Y10T428/2982
摘要： An abrasive grain is disclosed and may include a body. The body may include a central portion and 3 radial arms extending outwardly from the central portion along the entire length of the central portion of the body. A first radial arm, a second radial arm, and a third radial arm can define a total angle of less than 180 degrees. The body may also include at least one groove extending from a base surface along a first side of the body.
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公开(公告)号：US20230002655A1
公开(公告)日：2023-01-05
申请号：US17941634
申请日：2022-09-09
发明人： Martin HIRSCHMANN
摘要： A method for producing abrasive particles includes the following method steps: i. preparing a starting mixture containing at least aluminium hydroxide, which mixture can be converted at least into aluminium oxide by means of heat treatment; ii. extruding the starting mixture to form an extrudate; iii. separating the extrudate into intermediate particles; and iv. heat-treating the intermediate particles. The intermediate particles are converted into abrasive particles that contain aluminium oxide, and the extrudate and/or the intermediate particles is/are subjected to an input of energy that is asymmetrical with respect to the geometry of the extrudate and/or the intermediate particles.
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