-
公开(公告)号：JP2007168034A
公开(公告)日：2007-07-05
申请号：JP2005370535
申请日：2005-12-22
Inventor： FUJII SHIGEO , SUENAGA KENICHI
Abstract: PROBLEM TO BE SOLVED: To provide a polishing liquid composite for a hard disc substrate containing aluminum oxide particles as abrasive grains and capable of reducing piercing of the aluminum oxide particles on a substrate in manufacturing the hard disc substrate. SOLUTION: This polishing liquid composite for the hard disc substrate contains the aluminum oxide particles and water, a volume medium grain diameter of secondary particles of the aluminum oxide particles is 0.1 to 0.7 μm and the content of the particles having the grain diameter of more than 1 μm in the aluminum oxide particles is less than 0.2 wt.%. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种用于在制造硬盘基片时含有氧化铝颗粒作为磨粒并能够减少氧化铝颗粒在基板上刺穿的硬盘基板的抛光液复合体。 解决方案：该硬盘基片用抛光液复合体含有氧化铝粒子和水分，氧化铝粒子的二次粒子的体积中等粒径为0.1〜0.7μm，粒径为 在氧化铝颗粒中的1μm以上小于0.2重量％。 版权所有（C）2007，JPO＆INPIT
-
公开(公告)号：JP2005063531A
公开(公告)日：2005-03-10
申请号：JP2003290690
申请日：2003-08-08
Inventor： KITAYAMA HIROAKI , FUJII SHIGEO
CPC classification number: C09G1/02 , C09K3/1409 , C09K3/1463
Abstract: PROBLEM TO BE SOLVED: To provide a polishing liquid composition having high polishing speed and capable of reducing waviness, to provide a polishing method by which the waviness of a substrate to be polished is reduced using the polishing liquid composition and to provide a manufacturing method of the substrate using the polishing liquid composition. SOLUTION: The polishing liquid composition for a magnetic disk contains alumina, water, peroxide and an organic acid. In the polishing method, the substrate to be polished is polished by using the polishing liquid composition. The manufacturing method of the substrate has a step for polishing the substrate to be polished by using the polishing liquid composition. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 解决问题的方案为了提供具有高抛光速度并且能够减小波纹的抛光液组合物，提供一种抛光方法，通过该方法可以使用研磨液组合物减少抛光用基材的波纹，并提供一种 使用研磨液组合物的基板的制造方法。 解决方案：用于磁盘的抛光液组合物包含氧化铝，水，过氧化物和有机酸。 在抛光方法中，通过使用抛光液组合物对待研磨的基材进行研磨。 基板的制造方法具有通过使用研磨液组合物来研磨待研磨的基板的工序。 版权所有（C）2005，JPO＆NCIPI
-
公开(公告)号：JP2005063530A
公开(公告)日：2005-03-10
申请号：JP2003290666
申请日：2003-08-08
Inventor： FUJII SHIGEO , KITAYAMA HIROAKI
CPC classification number: G11B5/7315 , G11B5/8404 , Y10T428/24355
Abstract: PROBLEM TO BE SOLVED: To provide a substrate having high smoothness required for substrate for a magnetic disk, having high recording density, in particular, ≥50 Gbit/in 2 high recording density, to provide its manufacturing method, to provide a substrate for a magnetic disk having working speed of a practical production level, and simultaneously satisfying surface roughness (AFM surface roughness) of short wavelength and waviness of long wavelength (long wavelength waviness), and to provide its manufacturing method. SOLUTION: The substrate for the magnetic disk has ≤0.3 nm long wavelength waviness and ≤0.2 nm AFM surface roughness as its surface characteristics. The manufacturing method of the substrate for the magnetic disk has a step (step A) for polishing the substrate, using a polishing liquid (a polishing liquid A) containing alumina grinding particles having 0.05 to 0.5 μm average particle diameter and an oxidizing agent and a step (step B) for conducting final polishing of the substrate using a polishing liquid (polishing liquid B), containing silica particles having 0.005 to 0.1 μm average particle diameter. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：为了提供具有高记录密度，特别是≥50Gbit/ in
2 高记录密度的磁盘用基板所需的具有高平滑度的基板，以提供 提供具有实际生产水平的工作速度的磁盘的基板，同时满足短波长的表面粗糙度（AFM表面粗糙度）和长波长波长（波长波纹度）的波长，并提供其制造方法 方法。 解决方案：用于磁盘的衬底的表面特性具有≤0.3nm的长波长波纹度和≤0.2nm的AFM表面粗糙度。 用于磁盘的基板的制造方法具有使用包含平均粒径为0.05〜0.5μm的氧化铝研磨粒子和氧化剂的研磨液（研磨液A），研磨基板的步骤（工序A） 使用包含平均粒径为0.005〜0.1μm的二氧化硅粒子的研磨液（研磨液B）进行基材的最终研磨的工序（工序B）。 版权所有（C）2005，JPO＆NCIPI -
公开(公告)号：JP2002030273A
公开(公告)日：2002-01-31
申请号：JP2000384510
申请日：2000-12-18
Applicant: KAO CORP
Inventor： FUJII SHIGEO , OOSHIMA YOSHIAKI
Abstract: PROBLEM TO BE SOLVED: To provide an abrasive fluid composition which can increase an abrasive speed, lowers the surfaces roughness as well as the roll-off without occurrence of surface defects, a method of grinding the substrate with the composition and a method of producing semiconductor substrates. SOLUTION: This abrasive fluid composition comprises abrasive material, a roll off-reducing agent and alumina wherein the roll off-reducing agent is one or more selected from the group consisting o OH- or SH group having 2-20C carboxylic acids, 1-20C monocarboxylic acids, 2-3C dicarboxylic acids and their salts. In addition, this invention relates to a method of grinding semiconductor substrates by using this grind-finishing fluid composition and a method of producing semiconductor substrates by grinding the substrate with the fluid composition.
-
公开(公告)号：JP2002012857A
公开(公告)日：2002-01-15
申请号：JP2000384512
申请日：2000-12-18
Applicant: KAO CORP
Inventor： HAGIWARA TOSHIYA , FUJII SHIGEO , OOSHIMA YOSHIAKI
Abstract: PROBLEM TO BE SOLVED: To obtain a roll-off reducing agent capable of decreasing a roll-off of a substrate to be polished produced by polishing and improving a polishing rate, a roll-off reducing agent composition containing the roll-off reducing agent, to provide a method for decreasing the roll-off of the substrate to be polished by using the roll-off reducing agent and a method for producing the substrate to be polished using the roll-off reducing agent. SOLUTION: This roll-off reducing agent is selected from the group consisting of an OH group or SH group-containing 2-20C carboxylic acid, 1-20C monocarboxylic acid, 2-3C dicarboxylic acid and their salts. This roll-off reducing agent composition comprises the roll-off reducing agent, an abrasive and water. This method for decreasing the roll-off of the substrate to be polished comprises using the roll-off reducing agent. This method for producing the substrate to be polished comprises using the roll-off reducing agent.
-
Patent Agency Ranking
公开(公告)号：JPH11189810A
公开(公告)日：1999-07-13
申请号：JP36066197
申请日：1997-12-26
Applicant: KAO CORP
Inventor： IGAKI MICHIHITO , HASHIMOTO RYOICHI , ICHIKAWA HIROTSUGU , FUJII SHIGEO
Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a magnetic metal powder excellent in magnetostatic properties. SOLUTION: The magnetic metal powder can be obtained by dehydrating a surface treated hydrated iron oxide by heating in an inert gas atmosphere and then reducing it by a reducing gas. At this time, the surface treated hydrated iron oxide is obtained by a manufacturing method including the following stages (A) and (B):(A) a stage where a film containing a cobalt compound is formed on the surface of a hydrated iron oxide by adding water-soluble cobalt salt to a slurry containing the hydrated iron oxide, mixing them, adjusting the pH value of the resultant mixture to 9-11 by the use of ammonia, and further mixing; (B) a stage here, after the stage (A), the pH value of the slurry is adjusted to a value higher than the value adjusted in the stage (A) by 1-3 by the use of alkali hydroxide and slurry dispersion treatment is carried out under such a pH condition in an oxidizing atmosphere.
-
公开(公告)号：JPH11106218A
公开(公告)日：1999-04-20
申请号：JP26895797
申请日：1997-10-01
Applicant: KAO CORP
Inventor： IGAKI MICHIHITO , HASHIMOTO RYOICHI , SUZUKI KENICHI , FUJII SHIGEO
Abstract: PROBLEM TO BE SOLVED: To obtain highly packable metallic magnetic powder small in particle size, having high coercive force, highly saturated magnetization and narrow flux-reverse magnetic field distribution, high in oxidation resistance, free from any mutual agglomeration or fusing of the particles, and good in dispersibility, to obtain hydrous iron oxide to be used for producing the above metallic magnetic powder, and to obtain a magnetic recording medium using the metallic magnetic powder. SOLUTION: This hydrous iron oxide is obtained by mixing an aqueous solution of a ferrous salt with an aqueous solution of an alkali carbonate to form an alkaline suspension of terrous-contg. precipitate which is then aerated with an oxygen-contg. gas to form a hydrous iron oxide slurry followed by adjusting the slurry to
-
公开(公告)号：JPH1029819A
公开(公告)日：1998-02-03
申请号：JP20783796
申请日：1996-07-17
Applicant: KAO CORP
Inventor： YAMAMOTO YOSHIYASU , IGAKI MICHIHITO , FUJII SHIGEO , ARITA TOSHIHARU
Abstract: PROBLEM TO BE SOLVED: To obtain a spindle shaped goethite particle uniform in particle size, free from the incorporation of a dendrite particle and the presence of particle aggregation by previously incorporating a specific compound in one of reaction solutions before the forming reaction of the goethite particle. SOLUTION: This spindle shaped goethite particle is produced by passing an oxygen-containing gas in a suspension having pH 8-11 and containing FeCO3 - or Fe-containing precipitate, which is obtained by the reaction of an alkali carbonate aq. solution or an alkali carbonate.alkali hydroxide aq. solution with a ferrous salt aq. solution, to oxidize. At this time, before the spindle- shaped goethite particle is formed, a carboxylic acid or the salt having chelating ability or further a 2-valent transition metal compound are previously incorporated in one or more solutions of the alkali aq. solution, the ferrous salt aq. solution and the suspension containing FeCO3 - or Fe-containing precipitate. The goethite particle has 0.05-0.25μm average major axis diameter and an average axial ratio of 4-10.
-
49.发明专利
公开(公告)号：JPH09171914A
公开(公告)日：1997-06-30
申请号：JP34873595
申请日：1995-12-18
Applicant: KAO CORP
Inventor： IGAKI MICHIHITO , FUJII SHIGEO , IKEGUCHI MASAAKI , SUZUKI KENICHI
Abstract: PROBLEM TO BE SOLVED: To satisfy static magnetic characteristics and to improve dispersing property, filling property and oxidation resistance by using metal magnetic powder in a spindle shape, wherein Fe is contained by specified weight% or more, rare earth element and Co are contained by a specified weight rate with respect to Fe And S and Cl are both made to be the specified contents or less. SOLUTION: In the slurry of a spindle-shaped goethite containing Fe by 50wt.% or more at an axial ratio of 8.2, an aqueous solution 6 of hydrate of cobalt nitrate is added so that Co/Fe becomes 10-40wt.%. A compound, whose main component is cobalt hydroxide, is formed on the surface of particles. An aqueous solution 1 of hydrate of calcium acetate is added, and air is blown in. The aqueous solution of lanthanum is added so that La/Fe becomes 1-15wt.%. Furthermore, the aqueous solution of aluminum nitrate is dripped, and a compound, whose main component is the hydroxide of La and Al is formed. Washing is performed by ion exchange water until both S and Cl become 200ppm or less. The particles of a precursor are aligned. After high- temperature treatment, reduction and surface oxidation are performed. Thus, the metal magnetic powder having the excellent static magnetic characteristics and oxidation resistance and the high filling property is obtained.
-
公开(公告)号：JPH0574620B2
公开(公告)日：1993-10-18
申请号：JP2025585
申请日：1985-02-05
Applicant: KAO CORP
Inventor： WAKASA MASANOBU , FUJII SHIGEO , TAKEDA TSUNESHI
-
-
-
-
-
-
-
-
-
Search Results
99
records
(took 0.027 seconds)
