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    • 5. 发明授权
    • Low-loss magnetic powder core, and switching power supply, active filter, filter, and amplifying device using the same
    • 低损耗磁粉芯和开关电源,有源滤波器,滤波器和使用其的放大器件
    • US06750723B2
    • 2004-06-15
    • US10441883
    • 2003-05-20
    • Shoji YoshidaTakao MizushimaYutaka Naito
    • Shoji YoshidaTakao MizushimaYutaka Naito
    • H03F1191
    • H01F1/15341H01F1/15308H02M3/00
    • A magnetic powder core comprises a molded article of a mixture of a glassy alloy powder and an insulating material. The glassy alloy comprises Fe and at least one element selected from Al, P, C, Si, and B, and has a texture primarily composed of an amorphous phase. The glassy alloy exhibits a temperature difference &Dgr;Tx, which is represented by the equation &Dgr;Tx=Tx−Tg, of at least 20 K in a supercooled liquid, wherein Tx indicates the crystallization temperature and Tg indicates the glass transition temperature. The magnetic core precursor is produced mixing the glassy alloy powder with the insulating material, compacting the mixture to form a magnetic core precursor, and annealing the magnetic core precursor at a temperature in the range between (Tg−170) K and Tg K to relieve the internal stress of the magnetic core precursor. The glassy alloy exhibits low coercive force and low core loss.
    • 磁粉芯包括玻璃状合金粉末和绝缘材料的混合物的模塑制品。 玻璃状合金包含Fe和选自Al,P,C,Si和B中的至少一种元素,并且具有主要由非晶相组成的织构。 玻璃状合金在过冷液体中表现出至少20K的方程式ΔTx= Tx-Tg表示的温度差ΔTx,其中Tx表示结晶温度,Tg表示玻璃化转变温度。 制造磁芯前体,将玻璃状合金粉末与绝缘材料混合,压制混合物以形成磁芯前体,并在(Tg-170)K和Tg K之间的温度下退火磁芯前体以减轻 磁芯前体的内应力。 玻璃状合金显示低矫顽力和低铁损。
    • 10. 发明授权
    • Method for producing a polyolefin
    • 聚烯烃的制造方法
    • US5629390A
    • 1997-05-13
    • US648866
    • 1996-05-16
    • Sadaki NishimuraYutaka NaitoToshikazu ChikusaMitsuhiro MoriYozo Kondo
    • Sadaki NishimuraYutaka NaitoToshikazu ChikusaMitsuhiro MoriYozo Kondo
    • C08F4/658C08F4/60C08F4/654C08F4/659C08F10/00C08F210/16C08F4/655
    • C08F10/00C08F210/16
    • A method for producing a polyolefin in the presence of a catalyst comprising a transition metal compound and an organometallic compound, wherein a catalyst system is used which comprises: (A) a solid catalyst component prepared by reacting a uniform solution containing (I) at least one member selected from the group consisting of metal magnesium and a hydroxylated organic compound, and oxygen-containing organic compounds of magnesium, (II) an electron donative compound and (III) an oxygen-containing organic compound of titanium, with (IV) at least one aluminum halide compound to obtain a solid product, adding to this solid product (V) at least one compound selected from the group consisting of oxygen-containing organic compounds of one or more transition metals of Group IVa of the Periodic Table, and then treating the mixture with (VI) an aluminum halide compound, and (B) at least one catalyst component selected from the group consisting of organoaluminum compounds. A polymer having a desired molecular weight distribution and good configuration of particles can be obtained while maintaining high activity by the method of the present invention.
    • 一种在含有过渡金属化合物和有机金属化合物的催化剂存在下制备聚烯烃的方法,其中使用催化剂体系,其包括:(A)通过使至少含有(I)的均匀溶液 一种选自金属镁和羟基化有机化合物的组分,以及镁的含氧有机化合物,(II)给电子化合物和(III)钛的含氧有机化合物与(IV)在 至少一种卤化铝化合物,得到固体产物,向该固体产物(V)中加入至少一种选自周期表第Ⅳa族的一种或多种过渡金属的含氧有机化合物的化合物,然后 用(VI)卤化铝化合物处理混合物,和(B)至少一种选自有机铝化合物的催化剂组分。 通过本发明的方法可以获得具有所需分子量分布和良好构型的聚合物,同时保持高活性。