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FR2088492B1 - - Google Patents

Info

Publication number
FR2088492B1
FR2088492B1 FR7116916A FR7116916A FR2088492B1 FR 2088492 B1 FR2088492 B1 FR 2088492B1 FR 7116916 A FR7116916 A FR 7116916A FR 7116916 A FR7116916 A FR 7116916A FR 2088492 B1 FR2088492 B1 FR 2088492B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7116916A
Other versions
FR2088492A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of FR2088492A1 publication Critical patent/FR2088492A1/fr
Application granted granted Critical
Publication of FR2088492B1 publication Critical patent/FR2088492B1/fr
Expired legal-status Critical Current

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
    • G11B5/70636—CrO2
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
FR7116916A 1970-05-11 1971-05-11 Expired FR2088492B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2022820A DE2022820C3 (de) 1970-05-11 1970-05-11 Verfahren zur Herstellung von hochkoerzitivem Chromdioxid

Publications (2)

Publication Number Publication Date
FR2088492A1 FR2088492A1 (fr) 1972-01-07
FR2088492B1 true FR2088492B1 (fr) 1975-07-04

Family

ID=5770729

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7116916A Expired FR2088492B1 (fr) 1970-05-11 1971-05-11

Country Status (4)

Country Link
US (1) US3687851A (fr)
DE (1) DE2022820C3 (fr)
FR (1) FR2088492B1 (fr)
GB (1) GB1345039A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1012202B (it) * 1974-05-09 1977-03-10 Montedison Spa Procedimento per la produzione di biossido di cromo ferromagnetico
IT1045191B (it) * 1975-10-31 1980-05-10 Montedison Spa Procedimento per la produzione di biossido di cromo ferromagnetico
DE2556188C3 (de) * 1975-12-13 1979-07-05 Basf Ag, 6700 Ludwigshafen Flexible Mehrschichtmagnetogrammträger
DE2942646A1 (de) * 1979-10-22 1981-04-30 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von ferromagnetischem chromdioxid
DE3513723A1 (de) * 1985-04-17 1986-10-23 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von ferromagnetischem chromdioxid
DE3941578A1 (de) * 1989-12-16 1991-06-20 Basf Ag Verfahren zur herstellung von stabilisiertem chromdioxid und magnetischer aufzeichnungstraeger enthaltend dieses material

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117093A (en) * 1960-10-24 1964-01-07 Du Pont Process for the preparation of ferromagnetic chromium dioxide
DE1802469A1 (de) * 1968-10-11 1971-10-28 Bayer Ag Verfahren zur Herstellung von ferromagnetischem Chromdioxid

Also Published As

Publication number Publication date
FR2088492A1 (fr) 1972-01-07
DE2022820A1 (de) 1972-01-13
GB1345039A (en) 1974-01-30
DE2022820C3 (de) 1980-01-03
US3687851A (en) 1972-08-29
DE2022820B2 (de) 1979-03-22

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Legal Events

Date Code Title Description
ST Notification of lapse