ABRASIVE ARTICLES AND METHODS OF FORMING SAME

    公开(公告)号:US20240218224A1

    公开(公告)日:2024-07-04

    申请号:US18399470

    申请日:2023-12-28

    CPC classification number: C09K3/1409

    Abstract: According to one aspect, an abrasive article includes a backing; a make coat overlying the backing; an abrasive layer comprising abrasive particles and a binder; wherein the abrasive particles comprise a random rotational orientation; wherein the abrasive particles comprise a total height, H, and a fracture feature located at a height of 55%-90% H. The fracture feature is configured to enable fracturing when the particle has a front facing orientation relative to the grinding direction relative to the amount of fracturing when the particle is in a side facing orientation relative to the grinding direction.

    NON-SPHERICAL PRIMARY SILICA NANOPARTICLES AND THE USE THEREFOR

    公开(公告)号:US20240209234A1

    公开(公告)日:2024-06-27

    申请号:US18555810

    申请日:2022-04-14

    Abstract: Processes of synthesizing non-spherical primary silica nanoparticles comprise reacting at least two organoalkoxysilanes with water in a reaction mixture comprising water-miscible organic solvent and alkaline catalyst under alkaline conditions. The at least two organoalkoxysilanes have different reaction speeds with water under alkaline conditions. Each organoalkoxysilane has a structure represented by: SiR1R2R3R4 (I), wherein R1, R2, R3, and R4 are each independently selected from the group consisting of OR or R, wherein R is a substituted or unsubstituted linear or branched C1-C12 alkyl group, a C3-C8 cycloaliphatic group, a C2-C6 alkylene group, a halogen, or an aryl group, at least two, preferable at least three of R1, R2, R3, and R4 are OR; and at least one of the at least two organoalkoxysilanes has at least three of OR. A molar ratio of water (H2O) and hydrolysable groups (OR) on the at least two organoalkoxysilanes is >0 and

    ABRASIVE PARTICLES
    9.
    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

    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.

    NOBLE METAL SURFACE CLEANING PASTE, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

    公开(公告)号:US20230323159A1

    公开(公告)日:2023-10-12

    申请号:US18327896

    申请日:2023-06-02

    Inventor: Zexi XIONG Qing LIU

    CPC classification number: C09G1/02 C09K3/1409

    Abstract: A noble metal surface cleaning paste, a preparation method therefor and an application thereof are provided. Raw materials of preparing the cleaning paste include an abrasive, a thickening agent, and water. A weight ratio of the abrasive : the thickening agent : the water is 100: (0.1-5): 100. According to the cleaning paste, by a purely physical method, i.e., friction action between various tiny particles and a noble metal surface, an effect of removing an oxide layer and dirt on the surface is achieved. The cleaning paste does not contain any corrosive chemical component and thus not cause any damage to skin and the surface. The cleaning paste is mainly for cleaning oxidized noble metal surfaces, so that noble metal products that have been oxidized and darkened become glossy again. The cleaning paste is stable in property and can be stored for a long time without affecting its use effect.

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