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    • 1. 发明申请
    • POLYMER-ENCAPSULATED MAGNETIC NANOPARTICLES
    • 聚合物包覆磁性纳米粒子
    • WO2016065218A1
    • 2016-04-28
    • PCT/US2015/057036
    • 2015-10-23
    • CORNING INCORPORATED
    • FERRIE, Ann MeeJinJIN, YanWANG, LingyanZHOU, Yue
    • H01F1/00A61K33/26
    • H01F1/12C12N15/1013H01F1/0054H01F1/20H01F1/344H01F1/36
    • Magnetic particles (100) have a particle size (134) of 500 nm or less and include a core (110) and a polymer coating (120) that surrounds and encapsulates the core (110). The core (110) includes a metal, metal alloy, or metal oxide of at least one metal such as B, Mg, Al, Mn, Co, Ni, Cu, Fe Sm, Yb, Dy, Gd or Er and Nb. The magnetic core (100) is a polycrystalline particle and is a superspin glass magnetic material, having a coercivity greater than zero and a magnetic remenance greater than zero at room temperature. Above room temperature and at low field, the magnetic moment of these superspin glass magnetic materials increases with temperature. An in situ hydrolysis/precipitation method from precursor metal salts is used to form the polymer-encapsulated magnetic particles (100).
    • 磁性颗粒(100)具有500nm或更小的粒度(134),并且包括芯(110)和围绕并包封芯(110)的聚合物涂层(120)。 芯(110)包括至少一种金属如B,Mg,Al,Mn,Co,Ni,Cu,Fe Sm,Yb,Dy,Gd或Er和Nb的金属,金属合金或金属氧化物。 磁芯(100)是多晶颗粒,并且是在室温下具有大于零的矫顽力和大于零的磁性剩磁的超标玻璃磁性材料。 超过室温和低场时,这些超级玻璃磁性材料的磁矩随温度升高。 使用来自前体金属盐的原位水解/沉淀法形成聚合物包封的磁性颗粒(100)。