公开(公告)号：JPH107412A

公开(公告)日：1998-01-13

申请号：JP18155396

申请日：1996-06-21

Applicant: SONY CORP

Inventor： YAMADA SHINICHIRO ,  KITAMURA KENICHI ,  IMOTO HIROSHI ,  ATA MASAFUMI

IPC: C01B31/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing spherical carbon, easily and in a large quantity with a simple installation without accompanying large amounts of electric power and energy consuming. SOLUTION: A carrier gas G is bubbled in toluene 13 charged in a container 8 as a raw material, and the bubbled gas saturated with the toluene is discharged into an introduction pipe 12. The toluene mixture gas 13A is guided into an oven core pipe 3 with a carrier gas G supplied from the other introduction pipe 11b. When the toluene-mixed gas 13A passes through an oven 2, the toluene is pyrolyzed with a heater 5 in the oven 2, and the produced soot 15 containing the objective spherical carbon substances is adhered to the oven core pipe 3 and quartz wools 4a, 4b. The adhered soot is recovered to obtain the objective carbon substances.

公开(公告)号：JPH09188506A

公开(公告)日：1997-07-22

申请号：JP35411695

申请日：1995-12-29

Applicant: SONY CORP

Inventor： KURIHARA KENICHI ,  ATA MASAFUMI

IPC: C01B31/02 ,  C01B31/00 ,  C10M103/02 ,  C23C30/00 ,  G11B5/72 ,  H01L21/314

Abstract: PROBLEM TO BE SOLVED: To obtain a fluorinated fullerene polymer having excellent mechanical strength, charging no static electricity thereon, and having lubricity, by carrying out a polymerization in a gas plasma (esp. fluorine-based gas plasma) in producing the polymer. SOLUTION: This fluorinated fullerene polymer, fluorinated fullerene polymer film or fluorinated fullerene polymer-contg. medium is obtained through the following two processes: at least one kind of spherical carbon expressed by the formula Cn ((n) is such an integer as to be capable of geometrically forming a spherical compound) is sublimated; and a fluorinated fullerene polymer having the molecular formula (Cn Fm )x ((n) is the same as that mentioned above; (m) is an integer of

公开(公告)号：JPH08306364A

公开(公告)日：1996-11-22

申请号：JP13605795

申请日：1995-05-09

Applicant: SONY CORP

Inventor： ATA MASAFUMI ,  ENDO EIJI ,  TANAKA KOICHI

IPC: C07D317/36 ,  H01M6/16 ,  H01M10/05 ,  H01M10/0569 ,  H01M10/40

Abstract: PURPOSE: To prevent the precipitation of metals in dendrite state inn an anode by using a nonaqueous electrolytic solution containing a light metal salt as an electrolytic substance and a specified cyclic carbonate as a nonaqueous solvent. CONSTITUTION: A solution containing a light metal salt as an electrolytic substance and a cyclic carbonate having the shown formula as a nonaqueous solvent is used as a non-aqueous electrolytic solution. In the formula, R R , R , and R independently stand for hydrogen, lower alkyl, halogens, lower alkyl substituted with halogens and at least one of R , R , R , and R is a halogen and at least one of the rest is lower alkyl or lower alkyl substituted with halogens. Moreover, lithium or a lithium compound is preferably used as the anode active material.

公开(公告)号：JPH0859220A

公开(公告)日：1996-03-05

申请号：JP21814194

申请日：1994-08-19

Applicant: SONY CORP

Inventor： ATA MASAFUMI ,  TAKAHASHI NOBORU ,  MATSUZAWA NOBUYUKI

IPC: C01B31/02

Abstract: PURPOSE: To obtain a fullerene polymer high in electrical conductivity, excellent in transparency, and high in mechanical strength while retaining the physical properties inherent in fullerene, by imparting the plural molecules of fullerene with polymerization energy in its vapor and/or solid state. CONSTITUTION: This fullerene polymer is obtained by imparting plural molecules of fullerene of the identical kind with the same number of carbon atoms expressed by the formula Cn ((n) is an integer capable of geometrically forming a spherical compound) with polymerization energy in the form of plasma, light, electron beams, X-rays or heat in a vapor and/or solid state. This polymer has such a structure that the constituent carbon atoms of the fullerene are partly deleted and plural molecules are mutually directly linked in high symmetry via the carbon atoms adjacent to the deleted sites. This polymer, which retains the physical properties inherent in fullerene and presents the characteristics as its polymer, is hopeful of uses making the best use of these characteristics as thin films or materials containing the polymer.

公开(公告)号：JPH0636267A

公开(公告)日：1994-02-10

申请号：JP19503192

申请日：1992-07-22

Applicant: SONY CORP

Inventor： MACHIDA HORYU ,  ATA MASAFUMI ,  KAWAKADO KOICHI

IPC: B22F1/02 ,  C09D5/23 ,  G11B5/712 ,  H01F1/06

Abstract: PURPOSE:To obtain a metal magnetic powder with limited aging by performing a surface treatment of an Fe magnetic powder being reduced by a morpholine derivative to achieve a value high remarkably of saturated magnetization and excellent resistance to acid. CONSTITUTION:A magnetic powder comprises a Fe part 1, a metal oxide part 2 and an organic rust preventive agent layer 3 and an iron oxide part with a smaller value of saturated magnetization is caused to be reduced to the Fe part 1 with a larger saturated magnetization to produce a metal magnetic powder with higher saturated magnetization per unit weight. An organic antirust agent used in a surface treatment employs a morpholine derivative. After the iron oxide part is removed by hydrogen reduction beforehand, the surface treatment is carried out using the organic rust preventive agent in a reducing atmosphere or with oxygen and water being cut off. In a magnetic recording medium made up of a magnetic layer mainly composed of the magnetic powder and a binder formed on a non-magnetic support, the morpholine derivative is contained in the magnetic layer to improve durability and resistance to rust as medium thereof thereby enabling the suppression of aging.

公开(公告)号：JPH05225553A

公开(公告)日：1993-09-03

申请号：JP2764592

申请日：1992-02-14

Applicant: SONY CORP

Inventor： MACHIDA HORYU ,  ATA MASAFUMI ,  WATANABE HARUO

IPC: G11B5/708 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/712 ,  G11B5/73 ,  H01F1/06

Abstract: PURPOSE:To obtain fine ferromagnetic metal particles for a magnetic recording medium excellent in oxidation resistance and hardly undergoing deterioration with the lapse of time by carrying out surface treatment with an arom. org. acid having an anthraquinone skeleton. CONSTITUTION:The surfaces of fine ferromagnetic metal particles for a magnetic recording medium are treated with an arom. org. acid having an anthraquinone skeleton. The arom. org. acid, e.g., alizarin reacts with oxidized films on the surfaces of the fine ferromagnetic metal particles as shown by the formula and the org. acid is chemically adsorbed by a dehydration reaction on hydroxyl groups derived from water chemically adsorbed on the surfaces of the oxidized films. Fine ferromagnetic metal particles for a magnetic recording medium excellent in oxidation resistance and hardly undergoing a change with the lapse of time can be obtd.

公开(公告)号：JPH05114131A

公开(公告)日：1993-05-07

申请号：JP27397191

申请日：1991-10-22

Applicant: SONY CORP

Inventor： MACHIDA HORYU ,  ATA MASAFUMI ,  WATANABE HARUO

IPC: G11B5/712 ,  C09D5/23 ,  C09D7/12

Abstract: PURPOSE:To provide the magnetic metallic powder which has the high value of saturation magnetization per unit weight and has excellent oxidation resistance. CONSTITUTION:The magnetic Fe powder which consists of an Fe part 1, a metallic oxide part 2 (which plays the role as a sintering preventive layer and may be omitted in some cases) and an org. preservative layer 3 and is in a reduced state by reducing the iron oxide part of the small saturation magnetization to the Fe part having the large value of the saturation magnetization is subjected to a surface treatment with the org. preservative of the straight chain monocarboxylic acid expressed by following general formula. (General formula). CH3(CH2)n-2COOH, where n is an integer from 10 to 30.

公开(公告)号：JPH04373101A

公开(公告)日：1992-12-25

申请号：JP17734791

申请日：1991-06-21

Applicant: SONY CORP

Inventor： ATA MASAFUMI ,  MACHIDA HORYU ,  WATANABE HARUO

IPC: B22F1/00 ,  B22F1/02 ,  C09D5/23 ,  C09D7/12 ,  G11B5/712 ,  H01F1/06

Abstract: PURPOSE:To enhance the oxidation resistance and to prevent aging of the title ferromagnetic metallic fine particle. CONSTITUTION:Ferromagnetic metallic material mainly comprising Fe, Co, Ni or these metals are surface-processed using a metallic salt of an organic acid. At this time, as for the surface processing method, the immersion step of the ferromagnetic metallic material in the water containing the metallic salt of an organic acid or an organic solvent is applicable. Furthermore, these compounds may be used individually or in combination of different kind of compounds.

公开(公告)号：JPH04372718A

公开(公告)日：1992-12-25

申请号：JP17734591

申请日：1991-06-21

Applicant: SONY CORP

Inventor： KONDO HIROFUMI ,  ATA MASAFUMI

IPC: G11B5/712 ,  C09D5/23 ,  C09D7/12 ,  C10M105/24 ,  C10M105/56 ,  C10N40/18 ,  G11B5/71 ,  G11B5/72 ,  G11B5/725

Abstract: PURPOSE:To improve a traveling property, wear resistance, durability, and weatherproof while assuring good dispersibility. CONSTITUTION:An amine salt compd. of long-chain carboxylic acid is incorporated into a magnetic layer provided on a nonmagnetic base or a top coat layer consisting of the amine salt compd. of the long-chain carboxylic acid is formed on the magnetic layer. The carbon atoms of the hydrocarbon chains in the carboxylic acid of the amine salt compd. of the long-chain carboxylic acid are preferably >=10 pieces. On the other hand, the chain lengths of the hydrocarbon chains bonded to each nitrogen ahoms in amine are not limited. However, at least one of these hydrocarbon chains are preferably specified to >=10C in order to assure the good lubricity or dispersibility. Magnetic powder subjected to a rust preventive treatment is used as the magnetic powder to constitute the magnetic layer.

公开(公告)号：JPH04372713A

公开(公告)日：1992-12-25

申请号：JP17734691

申请日：1991-06-21

Applicant: SONY CORP

Inventor： ATA MASAFUMI ,  MACHIDA HORYU ,  WATANABE HARUO

IPC: G11B5/708 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/73

Abstract: PURPOSE:To improve stability with lapse of time and to obtain the magnetic recording medium having excellent preservative stability. CONSTITUTION:An org. metallic salt is incorporated into the magnetic layer of the magnetic recording medium constituted by forming the magnetic layer essentially consisting of magnetic powder and a binder on a nonmagnetic base. The org. metal salt may be added into a magnetic coating material at the time of preparing the coating material or may be used as a treating agent at the time of previously treating the surface of magnetic powder.