NL8002526A - Gehydrateerd ijzeroxyde en werkwijze voor het bereiden hiervan. - Google Patents

Gehydrateerd ijzeroxyde en werkwijze voor het bereiden hiervan. Download PDF

Info

Publication number
NL8002526A
NL8002526A NL8002526A NL8002526A NL8002526A NL 8002526 A NL8002526 A NL 8002526A NL 8002526 A NL8002526 A NL 8002526A NL 8002526 A NL8002526 A NL 8002526A NL 8002526 A NL8002526 A NL 8002526A
Authority
NL
Netherlands
Prior art keywords
iron
iron oxide
oxide
hydrated
silicate
Prior art date
Application number
NL8002526A
Other languages
English (en)
Dutch (nl)
Original Assignee
Tdk Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tdk Electronics Co Ltd filed Critical Tdk Electronics Co Ltd
Publication of NL8002526A publication Critical patent/NL8002526A/nl

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70652—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides gamma - Fe2 O3
    • G11B5/70668—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides gamma - Fe2 O3 containing a dopant

Landscapes

  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
NL8002526A 1979-05-11 1980-05-01 Gehydrateerd ijzeroxyde en werkwijze voor het bereiden hiervan. NL8002526A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5702179 1979-05-11
JP5702179A JPS55149138A (en) 1979-05-11 1979-05-11 Iron oxide hydrate containing silicon and phosphorus, and its manufacture

Publications (1)

Publication Number Publication Date
NL8002526A true NL8002526A (nl) 1980-11-13

Family

ID=13043770

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8002526A NL8002526A (nl) 1979-05-11 1980-05-01 Gehydrateerd ijzeroxyde en werkwijze voor het bereiden hiervan.

Country Status (5)

Country Link
US (1) US4323464A (de)
JP (1) JPS55149138A (de)
DE (1) DE3017524A1 (de)
GB (1) GB2050330A (de)
NL (1) NL8002526A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160496B1 (de) * 1984-04-28 1989-09-13 Toda Kogyo Corp. Magnetische Eisenoxydteilchen
JPS6140823A (ja) * 1984-07-31 1986-02-27 Dowa Mining Co Ltd マグネトプランバイト型フエライトの水熱合成法
JPS62167221A (ja) * 1986-01-17 1987-07-23 Showa Denko Kk レピッドクロサイトの製造方法
US5110658A (en) * 1987-10-19 1992-05-05 Konica Corporation Magnetic recording medium
EP0371384B1 (de) * 1988-12-01 1995-06-21 Ishihara Sangyo Kaisha, Ltd. Verfahren zur Herstellung von magnetischen Eisenoxidteilchen für magnetische Aufzeichnung
JPH0794325B2 (ja) * 1991-10-01 1995-10-11 三井金属鉱業株式会社 針状α−オキシ水酸化鉄の製造方法
CA2175466A1 (en) * 1993-11-01 1995-05-11 Jean A. Lown Process for making goethite

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931025A (en) * 1973-09-21 1976-01-06 Bayer Aktiengesellschaft Magnetic iron oxides with improved orientability and a process for their production
DE2625106C2 (de) * 1976-06-04 1982-03-11 Bayer Ag, 5090 Leverkusen Eisenoxidschwarz-Pigmente mit verbesserter Oxidationsbeständigkeit und Verfahren zu ihrer Herstellung
US4136158A (en) * 1976-11-01 1979-01-23 Toda Kogyo Corp. Production of acicular magnetic iron oxides
US4201761A (en) * 1977-06-02 1980-05-06 Suntech, Inc. Process for making iron oxide of controlled particle size
JPS5948766B2 (ja) * 1978-05-31 1984-11-28 利根産業株式会社 ゲ−タイトの製法
JPS5532652A (en) * 1978-08-30 1980-03-07 Matsushita Electric Works Ltd Manufacturing process of decorative laminated sheet
JPS56114833A (en) * 1980-02-08 1981-09-09 Mitsui Toatsu Chem Inc Production of fine particle of iron compound for magnetic recording

Also Published As

Publication number Publication date
US4323464A (en) 1982-04-06
JPS6132256B2 (de) 1986-07-25
JPS55149138A (en) 1980-11-20
GB2050330A (en) 1981-01-07
DE3017524A1 (de) 1980-11-13

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