公开(公告)号：JP2010037633A

公开(公告)日：2010-02-18

申请号：JP2008205012

申请日：2008-08-08

Applicant: Toda Kogyo Corp ,  戸田工業株式会社

Inventor： MORII HIROKO ,  IWASAKI KEISUKE ,  ISHITANI SEIJI ,  OSUGI MINEKO ,  HORIE SHINJI ,  HARADA TOSHIHARU ,  MATSUO TAKAHIRO ,  YAMAMOTO YOSUKE ,  HAYASHI KAZUYUKI

IPC: B22F9/24 ,  B22F1/00 ,  B22F3/00 ,  C22C38/00 ,  G11B5/706 ,  H01F1/047 ,  H01F1/06

Abstract: PROBLEM TO BE SOLVED: To provide a ferromagnetic-metal particle powder which suppresses the aggregation of particles due to sintering and has excellent dispersibility even if the powder is a fine particle, particularly a microparticle having an average major axis diameter of 100 nm or less, and to provide a magnetic recording medium using the ferromagnetic-metal particle powder. SOLUTION: The ferromagnetic-metal particle powder which suppresses the aggregation of particles due to sintering and has the excellent dispersibility can be obtained by employing a goethite particle powder containing 20 ppm or less of soluble Co as a starting raw material, and heating, dehydrating and reducing the goethite particle powder. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种抑制由于烧结引起的颗粒聚集的铁磁性金属颗粒粉末，即使粉末是细颗粒，特别是平均长轴直径为100nm的微粒也具有优异的分散性 并且提供使用铁磁性金属颗粒粉末的磁记录介质。 解决方案：通过使用含有20ppm以下的可溶性Co作为起始原料的针铁矿颗粒粉末，并且加热，可以获得抑制由烧结导致的颗粒聚集并具有优异分散性的铁磁性金属颗粒粉末 脱水和还原针铁矿颗粒粉末。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2003129002A

公开(公告)日：2003-05-08

申请号：JP2001331486

申请日：2001-10-29

Applicant: TODA KOGYO CORP

Inventor： MORII HIROKO ,  OSUGI MINEKO ,  SHIMOHATA YUSUKE ,  HAYASHI KAZUYUKI

IPC: C09C1/00 ,  C09C3/06 ,  C09C3/08 ,  C09C3/10 ,  C09C3/12 ,  C09D5/03 ,  C09D7/12 ,  C09D201/00

Abstract: PROBLEM TO BE SOLVED: To obtain a coloring pigment for a powder coating material having excellent dispersibility, heat resistance and light resistance together with high coloring power. SOLUTION: The coloring pigment comprises a composite particle powder having an average particle diameter of 0.001-0.15 μm in which the particle surface of a white inorganic particle powder is coated with an adhesive, an organic pigment and/or a carbon black are/is adhered to the coating and total adhesion amount of them is 1-500 pts.wt. based on the powder of 100 pts.wt. A powder coating material contains the coloring pigment.

公开(公告)号：JP2002294311A

公开(公告)日：2002-10-09

申请号：JP2001096834

申请日：2001-03-29

Applicant: TODA KOGYO CORP

Inventor： HAYASHI KAZUYUKI ,  MORII HIROKO ,  OSUGI MINEKO ,  OKUYAMA KIKUO

IPC: B22F9/30

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing fine and dense metal grain powder which has excellent dispersibility and high purity with high productivity. SOLUTION: An aqueous solution of nickel acetate, or an aqueous solution of nickel formate, or an aqueous solution of copper acetate, or an aqueous solution of copper formate is used as an atomizing thermal decomposition solution, and spherical metal grain powder is obtained by an atomizing thermal decomposition method. In this production method, the atomizing is performed under the reduced pressure of the atomizing thermal decomposition solution.

公开(公告)号：JP2002161221A

公开(公告)日：2002-06-04

申请号：JP2001177816

申请日：2001-06-12

Applicant: TODA KOGYO CORP

Inventor： HAYASHI KAZUYUKI ,  OSUGI MINEKO ,  MORII HIROKO

IPC: C08K9/06 ,  C08L101/00 ,  C09C1/24 ,  C09C3/12 ,  C09D7/12 ,  C09D201/00

Abstract: PROBLEM TO BE SOLVED: To obtain a fine green-based color pigment which does not contain a harmful element, has improved chemical resistance such as acid resistance, alkali resistance, etc., and improved heat resistance, and to provide a coating and a resin composition having excellent transparency by using the fine green- based color pigment. SOLUTION: This fine green-based color pigment comprises fine particle powder of green color complex hydrated iron oxide having >=0.005 μm and

公开(公告)号：JP2002008915A

公开(公告)日：2002-01-11

申请号：JP2000190161

申请日：2000-06-23

Applicant: TODA KOGYO CORP

Inventor： HAYASHI KAZUYUKI ,  OSUGI MINEKO ,  KAMIGAKI MAMORU ,  MORII HIROKO

IPC: C01G49/00 ,  C01G49/06 ,  C01G49/08 ,  G11B5/708 ,  G11B5/712 ,  G11B5/714 ,  H01F1/11

Abstract: PROBLEM TO BE SOLVED: To provide a composite magnetic grain power which is superior in durability, capable of improving a magnetic head in cleaning properties, and suitable for the magnetic recording layer of a magnetic recording medium. SOLUTION: Fine grain powder of one or more compounds, selected from among nitride, carbide or sulfide of aluminum, zirconium, cerium, titanium, silicon, boron or molybdenum and 0.001 to 0.07 μm in average grain diameter is fixed on the surface of magnetic grain powder 0.01 to 0.3 μm in average grain diameter by a silicon compound, is produced from tetraalkoxylane for the formation of composite magnetic gain powder. A fine grain power of 0.1 to 20 wt.% to the magnetic grain powder is used for the formation of the composite magnetic grain powder used for a magnetic recording medium.

公开(公告)号：JP2001254110A

公开(公告)日：2001-09-18

申请号：JP2000066724

申请日：2000-03-10

Applicant: TODA KOGYO CORP

Inventor： HAYASHI KAZUYUKI ,  MORII HIROKO ,  OSUGI MINEKO ,  OKUYAMA KIKUO

IPC: B22F9/30 ,  B22F1/00 ,  H01G4/008 ,  H01G4/12

Abstract: PROBLEM TO BE SOLVED: To provide a method of producing metallic particulate powder by which dense, spherical metallic particulate powder excellent in dispersibility and high in purity can be obtained. SOLUTION: In this method for producing metallic particulate powder, a mixed aqueous solution of an aqueous solution of nickel salt or an aqueous solution of copper salt and an aqueous solution containing hydrogencarbonate of 0.01 to 10 by molar ratio to nickel salt or copper salt in the above aqueous solution is used as an atomizing thermal decomposition solution, and spherical metallic particulate powder is obtained by an atomizing thermal decomposition method.

公开(公告)号：JP2001254109A

公开(公告)日：2001-09-18

申请号：JP2000066723

申请日：2000-03-10

Applicant: TODA KOGYO CORP

Inventor： HAYASHI KAZUYUKI ,  MORII HIROKO ,  OSUGI MINEKO ,  OKUYAMA KIKUO

IPC: B22F9/26 ,  B22F9/30

Abstract: PROBLEM TO BE SOLVED: To provide a method of producing metallic particulate powder by which dense, spherical metallic particulate powder excellent in dispersibility and high in purity can be obtained. SOLUTION: In this method for producing metallic particulate powder, an aqueous solution of nickel acetate or an aqueous solution of nickel formate or an aqueous solution of copper acetate or an aqueous solution of copper formate is used as atomizing thermal decomposition solution, and spherical metallic particulate powder is obtained by an atomizing thermal decomposition method.

公开(公告)号：JP2001172526A

公开(公告)日：2001-06-26

申请号：JP2000304735

申请日：2000-10-04

Applicant: TODA KOGYO CORP

Inventor： HAYASHI KAZUYUKI ,  OSUGI MINEKO ,  MORII HIROKO ,  KATAMOTO TSUTOMU

IPC: C01G49/00 ,  C08K9/06 ,  C08L101/00 ,  C09C1/24 ,  C09C1/36 ,  C09C3/06 ,  C09C3/12 ,  C09D7/12 ,  C09D201/00

Abstract: PROBLEM TO BE SOLVED: To provide a yellow pigment which is nonpolluting, is excellent in heat resistance, has a strong coloring power, and exhibits yellow color with a stronger yellowish tint. SOLUTION: This yellow pigment comprises (A) a composite metal oxide powder which is based basically on Fe, Ti, and Li, has a crystal phase mainly comprising a pseudobrookite structure, and has an average particle size of 0.1-2.0 μm, (B) a cover layer which is formed from an organosilane compound or a polysiloxane derived from an alkoxysilane and covers the surfaces of particles of the metal oxide powder, and (C) 1-30 pts.wt. (based on 100 pts.wt. metal oxide powder) organic yellow pigment attached to the cover layer.

公开(公告)号：JP2000095968A

公开(公告)日：2000-04-04

申请号：JP27109798

申请日：1998-09-25

Applicant: TODA KOGYO CORP

Inventor： HAYASHI KAZUYUKI ,  MORII HIROKO ,  OSUGI MINEKO

IPC: C09C1/24 ,  C09C3/12 ,  C09D5/00

Abstract: PROBLEM TO BE SOLVED: To obtain a surface-treated inorg. coloring pigment which exhibits excellent dispersion easiness, dispersion homogeneity, dispersion stability, and acid resistance even when used in an aq. coating material by mixing an inorg. coloring powder with an organosilazane to coat the surface of the powder with the organosilazane. SOLUTION: An inorg, coloring powder having an average particle size of 0.1-10 μm, a major axis of 0.1-20 μm, an axis ratio (major axis: minor axis) of (2:1)-(20:1), a BET specific surface area of 1-200 m2/g, and a particle size of 0. 01-10 μm is mixed with an aq. suspension contg. 0.1-50 g/λ squaric acid for at least 5 min, then filtered, and dried to coat the powder with 0.01-10 wt.% (in terms of C) squaric acid. The powder is then mixed with an organosilazane at 80 deg.C or higher to coat the powder with 0.01-6 wt.% (in terms of C) organosilazane in a ratio of the amt. of the organosilazane attached to that of squaric acid attached of (1:1,000)-(1,000:1).

公开(公告)号：JP2013159804A

公开(公告)日：2013-08-19

申请号：JP2012021335

申请日：2012-02-02

Applicant: Toda Kogyo Corp ,  戸田工業株式会社

Inventor： ISHITANI SEIJI ,  YAMAMOTO YOSUKE ,  IWASAKI KEISUKE ,  OSUGI MINEKO ,  MORII HIROKO ,  HAYASHI KAZUYUKI

IPC: B22F1/00 ,  B82Y30/00 ,  H01B1/00 ,  H01B1/22 ,  H01B5/00 ,  H01B5/14

Abstract: PROBLEM TO BE SOLVED: To provide silver microparticles with an average particle diameter of 30-100 nm excellent not only in heat shrinkability and low-temperature sinterability but also in filling property into an electrode and a circuit pattern formed on a substrate; and a conductive paste, a conductive film, and an electronic device containing the silver microparticles.SOLUTION: Silver microparticles have a high tapped density of at least of 3.0 g/cm, despite of being a fine particle with an average diameter (D) of 30-100 nm, and is excellent in filling property into an electrode and a circuit pattern formed on a substrate, so that a conductive paste excellent in heat-shrinkability and low-temperature sinterability can be obtained.

Abstract translation: 要解决的问题：为了提供平均粒径为30-100nm的银微粒，不仅在热收缩性和低温烧结性方面也具有优异的优点，而且在形成在基板上的电极和电路图案中的填充性能优异; 以及含有银微粒子的导电性糊剂，导电性膜和电子器件。溶解性：银微粒具有至少3.0g / cm 3以下的高密度密度，尽管平均粒径（D）为 30-100nm，并且在基板上形成的电极和电路图案的填充性优异，可以获得热收缩性和低温烧结性优异的导电性糊剂。