公开(公告)号：US3968090A

公开(公告)日：1976-07-06

申请号：US535489

申请日：1974-12-23

申请人： Kazushi Shimada ,  Toru Maeda ,  Yasuhiko Iwaoka ,  Hisao Anzai

发明人： Kazushi Shimada ,  Toru Maeda ,  Yasuhiko Iwaoka ,  Hisao Anzai

IPC分类号： B01F7/16 ,  B01J19/00 ,  B01J19/18 ,  C08F2/00 ,  C08F2/02 ,  C08F218/00 ,  C08F120/02 ,  C08F220/00 ,  C08F222/00

CPC分类号： B01J19/0013 ,  B01F7/1675 ,  B01J19/18 ,  B01F2215/0427 ,  B01F2215/0431 ,  B01J2219/00083 ,  B01J2219/00094 ,  B01J2219/185

摘要： A method and an apparatus for removing the heat of polymerization evolved during a polymerization procedure carried out while the liquid polymerization mixture is stirred in a reactor are provided. A condensable vapor present in the space above the liquid level of the polymerization mixture inside the reactor is condensed by a cooling means provided in said space while the inner pressure of the reactor is maintained at a level such that the polymerization mixture does not boil. Preferably, the vapor phase is stirred.

摘要翻译： 提供了在反应器中搅拌液体聚合混合物的同时进行聚合过程中放出聚合热的方法和装置。 存在于反应器内的聚合混合物的液面之上的空间中的可冷凝蒸汽通过设置在所述空间中的冷却装置冷凝，同时反应器的内部压力保持在使得聚合混合物不沸腾的水平。 优选地，蒸气相被搅拌。

公开(公告)号：US3993834A

公开(公告)日：1976-11-23

申请号：US526383

申请日：1974-11-22

申请人： Kazuya Chimura ,  Takashi Kaneko ,  Shunichi Takashima ,  Ryuichi Nakazono ,  Masao Kawashima ,  Hiroyuki Ota ,  Kenji Tamura ,  Kazunori Kagawa ,  Kazushi Shimada ,  Toru Maeda ,  Hisao Anzai ,  Kenji Takoi ,  Kenichi Sakunaga

发明人： Kazuya Chimura ,  Takashi Kaneko ,  Shunichi Takashima ,  Ryuichi Nakazono ,  Masao Kawashima ,  Hiroyuki Ota ,  Kenji Tamura ,  Kazunori Kagawa ,  Kazushi Shimada ,  Toru Maeda ,  Hisao Anzai ,  Kenji Takoi ,  Kenichi Sakunaga

IPC分类号： C08F2/00 ,  B29C47/00 ,  C08F2/02 ,  C08F2/44 ,  D01F8/10 ,  G02B1/04 ,  G02B6/00 ,  D02G3/00 ,  B32B27/00

CPC分类号： G02B1/048 ,  D01F8/10 ,  G02B1/046 ,  B29C47/00 ,  B29C47/0014 ,  Y10S428/91 ,  Y10S428/918 ,  Y10T428/2929 ,  Y10T428/2938 ,  Y10T428/2967 ,  Y10T428/3154 ,  Y10T428/31544 ,  Y10T428/31928

摘要： There is provided a filament of improved light transmission having a sheath-core composite structure formed of a methyl methacrylate polymer core material and a fluorine-containing polymer sheath material. The light transmitting filament is characterized in that the methyl methacrylate polymer core material is prepared by the specific procedure of continuous bulk polymerization and subsequent removal of volatile contents, wherein the polymerization is performed in a continuously and thoroughly stirred reaction vessel at a low catalyst concentration and a relatively high temperature and with improved conversion. The light transmitting filament possesses an absorption coefficient (k) of no greater than 6 .times. 10.sup.-.sup.3 cm.sup.-.sup.1.

摘要翻译： 提供了具有由甲基丙烯酸甲酯聚合物芯材料和含氟聚合物护套材料形成的皮芯复合结构的改进的透光性的灯丝。 透光丝的特征在于甲基丙烯酸甲酯聚合物芯材料通过连续本体聚合的特定方法制备，随后除去挥发性成分，其中聚合在低催化剂浓度下在连续和彻底搅拌的反应容器中进行， 相对较高的温度和改善的转化率。 透光丝具有不大于6×10 -3 cm -1的吸收系数（k）。

公开(公告)号：US3968059A

公开(公告)日：1976-07-06

申请号：US546883

申请日：1975-02-04

申请人： Kazushi Shimada ,  Toru Maeda ,  Tamotu Nishizawa ,  Yositaka Sasaki ,  Takehiko Narisada ,  Hisao Anzai

发明人： Kazushi Shimada ,  Toru Maeda ,  Tamotu Nishizawa ,  Yositaka Sasaki ,  Takehiko Narisada ,  Hisao Anzai

IPC分类号： C08F2/00 ,  C08F2/02 ,  C08F6/00 ,  C08F6/06 ,  C08F20/14 ,  C08F6/28 ,  C08F20/18

CPC分类号： C08F20/14

摘要： A process of producing methyl methacrylate polymers is provided wherein the monomer are polymerized by a bulk polymerization procedure at 150.degree. to 180.degree.C with a conversion of 50 to 80% and the volatiles predominantly comprised of the unreacted monomer, separated from the polymer product, are cyclically reused as a part of the monomer feed for polymerization. In such a monomer feed cycle system, oligomers are substantially removed from the volatiles and then the volatiles are blended with a virgin monomer feed for polymerization, the content in the volatiles of impurities having boiling points of lower than 200.degree.C at normal pressure is maintained within the range of 5 to 20% by weight.

摘要翻译： 提供了生产甲基丙烯酸甲酯聚合物的方法，其中单体通过本体聚合方法在150℃至180℃下进行聚合，转化率为50至80％，主要由未聚合的单体组成的挥发物与聚合物产物分离， 作为聚合单体进料的一部分循环使用。 在这种单体进料循环系统中，基本上从挥发物中除去低聚物，然后将挥发物与原始单体进料共混以进行聚合，保持在常压下沸点低于200℃的杂质挥发物中的含量 在5至20重量％的范围内。

公开(公告)号：US20130266474A1

公开(公告)日：2013-10-10

申请号：US13995342

申请日：2012-08-09

申请人： Toru Maeda ,  Takeshi Kato

发明人： Toru Maeda ,  Takeshi Kato

IPC分类号： B22F3/24 ,  H01F1/01

CPC分类号： B22F3/24 ,  C22C2202/02 ,  H01F1/01 ,  H01F1/0557 ,  H01F1/0577 ,  H01F1/058 ,  H01F1/059 ,  H01F41/0273

摘要： A method is provided for producing magnetic green compacts. Material powder including a rare earth alloy and containing not less than 15 mass % of fine particles with particle diameter of not more than 2 μm is filled into a compacting mold, then compacted and compressed, and subjected to magnetic fields to give a green compact. A powder compact having a packing density 1.05 to 1.2 times the bulk density is subjected to a weak magnetic field of 1 to 2 T to give a compact. The magnetic field strength is increased to not less than 3 T at an excitation rate of 0.01 to 0.15 T/sec, and the strong magnetic field of not less than 3 T is applied to the compact by a high-temperature superconducting coil. The magnetic field is applied by the high-temperature superconducting coil in a direction opposite to a direction applied by a normal conducting coil.

摘要翻译： 提供了用于制造磁性绿色压块的方法。 将含有不少于15质量％的粒径不大于2μm的微粒的稀土合金的材料粉末填充到压实模具中，然后压实和压缩，并进行磁场以得到生坯。 具有填充密度为1.05〜1.2倍堆积密度的粉末压块经受1〜2T的弱磁场，得到致密。 磁场强度以0.01〜0.15T / sec的激发速度增加到不低于3T，并且通过高温超导线圈对该压块施加不小于3T的强磁场。 磁场由高温超导线圈沿与正常导电线圈施加的方向相反的方向施加。

公开(公告)号：US20120237769A1

公开(公告)日：2012-09-20

申请号：US13496069

申请日：2011-04-13

申请人： Toru Maeda ,  Asako Watanabe

发明人： Toru Maeda ,  Asako Watanabe

IPC分类号： H01F1/01 ,  B22F3/24 ,  B22F3/02 ,  C23C8/08 ,  B22F1/00

CPC分类号： H01F1/0551 ,  B22F3/02 ,  B22F3/101 ,  B22F3/24 ,  B22F9/023 ,  C22C33/0278 ,  H01F1/0573 ,  H01F1/0578 ,  H01F41/0273 ,  Y10T428/2982

摘要： The present invention provides a powder for a magnet which can form a rare earth magnet having excellent magnetic characteristics and which has excellent moldability, a method for producing the powder for a magnet, a powder compact, and a rare earth-iron-boron-based alloy material.Magnetic particles constituting a powder for a magnet each include a structure in which a particle of a phase 3 of a hydrogen compound of a rare earth element is dispersed in a phase 2 of an iron-containing material. Since the phase 2 of the iron-containing material is uniformly present in each of the magnetic particles 1, the powder has excellent moldability and easily increases the density of a powder compact 4. The powder for a magnet can be produced by heat-treating a powder of a rare earth-iron-boron-based alloy (R—Fe—B-based alloy) in a hydrogen atmosphere at a temperature equal to or higher than the disproportionation temperature of the R—Fe—B-based alloy to separate the powder into the rare earth element and the iron-containing material and to produce the hydrogen compound of the rare earth element. The powder compact 4 is produced by compacting the powder for a magnet. The powder compact 4 is heat-treated in a vacuum to produce a R—Fe—B-based alloy material 5, and the R—Fe—B-based alloy 5 is magnetized to produce a R—Fe—B-based alloy magnet 6.

摘要翻译： 本发明提供一种可形成磁特性优异且成型性优异的稀土类磁体的粉末，磁铁用粉末的制造方法，粉末成形体和稀土 - 铁 - 硼系的粉末 合金材料。 构成磁体用粉末的磁性粒子各自包含将稀土元素的氢化合物的相3的粒子分散在含铁材料的相2中的结构。 由于含铁材料的相2均匀地存在于每个磁性颗粒1中，所以粉末具有优异的成型性，并且容易增加粉末压块4的密度。用于磁体的粉末可以通过热处理 在等于或高于R-Fe-B基合金的歧化温度的温度下，在氢气氛中稀土 - 铁 - 硼基合金粉末（R-Fe-B基合金），以分离 粉末进入稀土元素和含铁材料，并产生稀土元素的氢化合物。 粉末压实体4是通过压实用于磁体的粉末来制造的。 粉末压块4在真空中热处理以产生R-Fe-B基合金材料5，并且将R-Fe-B基合金5磁化以产生R-Fe-B基合金磁体 6。

公开(公告)号：US08123874B2

公开(公告)日：2012-02-28

申请号：US12518498

申请日：2008-09-03

申请人： Tomoyuki Ishimine ,  Toshihiro Sakamoto ,  Toru Maeda ,  Naoto Igarashi

发明人： Tomoyuki Ishimine ,  Toshihiro Sakamoto ,  Toru Maeda ,  Naoto Igarashi

IPC分类号： H01F1/20

CPC分类号： H01F3/02 ,  B22F1/0014 ,  B22F1/0062 ,  B22F1/007 ,  B22F2999/00 ,  C22C38/00 ,  C22C2202/02 ,  H01F1/24 ,  H01F1/26 ,  H01F1/33 ,  H01F41/0246 ,  Y10T428/2982 ,  B22F3/10 ,  B22F2201/02

摘要： A soft magnetic material, a dust core, a method for manufacturing the soft magnetic material, and a method for manufacturing the dust core that can improve DC bias characteristics are provided.A soft magnetic material includes a plurality of metal magnetic particles 10 whose coefficient of variation Cv (σ/μ), which is a ratio of a standard deviation (σ) of a particle size of the metal magnetic particles 10 to an average particle size (μ) thereof, is 0.40 or less and whose circularity Sf is 0.80 or more and 1 or less. The metal magnetic particles 10 preferably have an average particle size of 1 μm or more and 70 μm or less. The soft magnetic material preferably further includes an insulating coated film that surrounds a surface of each of the metal magnetic particles 10.

摘要翻译： 提供软磁性材料，压粉芯，软磁性材料的制造方法以及可提高直流偏压特性的集尘芯的制造方法。 软磁性材料包括多个金属磁性颗粒10，其金属磁性颗粒10的粒径与平均颗粒的标准偏差（＆sgr）的比值变化系数Cv（＆Sgr /μ） 尺寸（μ）为0.40以下，圆形度Sf为0.80以上1以下。 金属磁性粒子10的平均粒径优选为1μm以上且70μm以下。 软磁性材料优选还包括围绕每个金属磁性颗粒10的表面的绝缘涂膜。

公开(公告)号：US20100193726A1

公开(公告)日：2010-08-05

申请号：US12665489

申请日：2008-08-26

申请人： Toru Maeda ,  Kazushi Kusawake

发明人： Toru Maeda ,  Kazushi Kusawake

IPC分类号： H01F1/26 ,  B05D5/00 ,  B29C71/02 ,  H01F1/24

CPC分类号： H01F41/0246 ,  B22F1/0062 ,  C01P2006/42 ,  C09C1/62 ,  C22C33/02 ,  C22C2202/02 ,  H01F1/26

摘要： A soft magnetic material includes a plurality of composite magnetic particles (30) each including an iron-based particle (10) containing iron and an insulating coating film (20) surrounding a surface of the iron-based particle (10). The insulating coating film contains an organic group derived from an organic acid having at least one substance selected from the group consisting of titanium, aluminum, silicon, calcium, magnesium, vanadium, chromium, strontium, and zirconium. The at least one substance in the insulating coating film (20) is bonded to iron in the iron-based particles (10) through the organic group derived from the organic acid in the insulating coating film (20). Furthermore, a method for producing a soft magnetic material includes the steps of preparing the iron-based particles (10) containing iron and forming the insulating coating film (20) surrounding a surface of each of the iron-based particles (10). In the step of forming the insulating coating film, the organic acid containing the substance is brought into contact with the surfaces of the iron-based particles (10).

摘要翻译： 软磁性材料包括多个复合磁性颗粒（30），每个复合磁性颗粒包括含有铁的铁基颗粒（10）和围绕铁基颗粒（10）表面的绝缘涂膜（20）。 绝缘涂膜含有衍生自具有选自钛，铝，硅，钙，镁，钒，铬，锶和锆中的至少一种物质的有机酸的有机基团。 绝缘涂膜（20）中的至少一种物质通过绝缘涂膜（20）中由有机酸衍生的有机基团与铁基颗粒（10）中的铁键合。 此外，制造软磁性体的方法包括以下步骤：制备含有铁的铁基颗粒（10），并形成围绕每个铁基颗粒（10）的表面的绝缘涂膜（20）。 在形成绝缘涂膜的步骤中，使含有物质的有机酸与铁基颗粒（10）的表面接触。

公开(公告)号：US07682695B2

公开(公告)日：2010-03-23

申请号：US10597197

申请日：2005-01-28

申请人： Hirokazu Kugai ,  Naoto Igarashi ,  Toru Maeda ,  Kazuhiro Hirose ,  Haruhisa Toyoda ,  Koji Mimura ,  Takao Nishioka

发明人： Hirokazu Kugai ,  Naoto Igarashi ,  Toru Maeda ,  Kazuhiro Hirose ,  Haruhisa Toyoda ,  Koji Mimura ,  Takao Nishioka

IPC分类号： B32B5/16 ,  B29C67/04

CPC分类号： H01F3/08 ,  H01F1/24 ,  H01F1/33 ,  H01F41/0246 ,  Y10T29/4902 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/2996

摘要： The object of the present invention is to provide a powder core and method for making the same that is equipped with insulative coating having superior heat resistance, with the coating making it possible to adequately restrict the flow of eddy currents between particles.The powder core is equipped with a plurality of compound magnetic particles bonded to each other. Each of said plurality of composite magnetic particles includes: a metal magnetic particle 10; an insulative lower layer coating 20 surrounding a surface 10a of said metal magnetic particle 10; an upper layer coating 30 surrounding said lower layer coating 20 and containing silicon; and dispersed particles 50 containing a metal oxide compound and disposed in said lower layer coating 20 and/or said upper layer coating 30. A mean particle diameter R of the dispersed particles 50 meets the condition 10 nm

摘要翻译： 本发明的目的是提供一种粉末芯及其制造方法，其具有耐热性优异的绝缘涂层，该涂层可以适当地限制颗粒之间的涡流的流动。 粉末芯配备有彼此结合的多个复合磁性颗粒。 所述多个复合磁性颗粒中的每一个包括：金属磁性颗粒10; 围绕所述金属磁性颗粒10的表面10a的绝缘性下层涂层20; 围绕所述下层涂层20并含有硅的上层涂层30; 和含有金属氧化物化合物的分散颗粒50，并且设置在所述下层涂层20和/或上层涂层30中。分散颗粒50的平均粒径R满足条件10nm

公开(公告)号：US07674342B2

公开(公告)日：2010-03-09

申请号：US10594961

申请日：2005-03-29

申请人： Toru Maeda ,  Naoto Igarashi ,  Kazuhiro Hirose ,  Haruhisa Toyoda

发明人： Toru Maeda ,  Naoto Igarashi ,  Kazuhiro Hirose ,  Haruhisa Toyoda

IPC分类号： H01F1/14

CPC分类号： C22C33/02 ,  B22F1/0088 ,  B22F2003/248 ,  B22F2998/10 ,  H01F1/24 ,  H01F1/26 ,  H01F41/0246 ,  B22F9/082 ,  B22F1/0085 ,  B22F1/02 ,  B22F1/0059 ,  B22F3/02 ,  B22F3/24

摘要： A method of producing a soft magnetic material includes the steps of preparing soft magnetic powder containing a plurality of soft magnetic particles etching the soft magnetic powder to remove surfaces of the soft magnetic particles and, after the etching step, heat-treating the soft magnetic powder in a finely divided state at a temperature of not less than 400° C. and not more than 900° C. By this method configured as above, desired magnetic characteristics can be obtained.

摘要翻译： 一种制造软磁性材料的方法包括以下步骤：制备含有多个软磁性颗粒的软磁性粉末，该软磁性粉末蚀刻软磁性粉末以去除软磁性颗粒的表面，并且在蚀刻步骤之后，对软磁性粉末进行热处理 在不低于400℃且不高于900℃的温度下处于细分状态。通过如上构造的方法，可以获得期望的磁特性。

公开(公告)号：US07544417B2

公开(公告)日：2009-06-09

申请号：US11795463

申请日：2006-01-20

申请人： Toru Maeda ,  Kazuhiro Hirose ,  Haruhisa Toyoda

发明人： Toru Maeda ,  Kazuhiro Hirose ,  Haruhisa Toyoda

IPC分类号： B32B5/16

CPC分类号： H01F3/08 ,  B22F1/0059 ,  B22F1/02 ,  B22F2998/10 ,  H01F1/24 ,  H01F1/26 ,  H01F41/0246 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/2991 ,  Y10T428/2995 ,  Y10T428/2998 ,  B22F9/082

摘要： A soft magnetic material includes a plurality of composite magnetic particles (30), wherein each of the plurality of composite magnetic particles (30) includes a metal magnetic particle (10), an insulating coating (20) covering the surface of the metal magnetic particle (10), and a composite coating (22) covering the outside of the insulating coating (20). The composite coating (22) includes a heat-resistance-imparting protective coating (24) covering the surface of the insulating coating (20), and a flexible protective coating (26) covering the surface of the heat-resistance-imparting protective coating (24). Accordingly, a soft magnetic material and a dust core which have a satisfactory compactibility and in which the insulating coating satisfactorily functions, thereby sufficiently reducing core loss, can be obtained.

摘要翻译： 软磁性材料包括多个复合磁性颗粒（30），其中多个复合磁性颗粒（30）中的每一个包括金属磁性颗粒（10），覆盖金属磁性颗粒表面的绝缘涂层（20） （10）和覆盖绝缘涂层（20）外部的复合涂层（22）。 复合涂层（22）包括覆盖绝缘涂层（20）表面的耐热性保护涂层（24）和覆盖耐热性保护涂层表面的柔性保护涂层（26） 24）。 因此，可以获得具有令人满意的紧密性并且其中绝缘涂层令人满意地起作用，从而充分降低铁芯损耗的软磁性材料和集尘芯。