DE1802469A1 - Verfahren zur Herstellung von ferromagnetischem Chromdioxid - Google Patents

Verfahren zur Herstellung von ferromagnetischem Chromdioxid

Info

Publication number
DE1802469A1
DE1802469A1 DE19681802469 DE1802469A DE1802469A1 DE 1802469 A1 DE1802469 A1 DE 1802469A1 DE 19681802469 DE19681802469 DE 19681802469 DE 1802469 A DE1802469 A DE 1802469A DE 1802469 A1 DE1802469 A1 DE 1802469A1
Authority
DE
Germany
Prior art keywords
stage
product
chromium
chromic acid
modifier
Prior art date
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.)
Pending
Application number
DE19681802469
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Dr Kappey
Fritz Dr Rodi
Juergen Dr Scharschmidt
Hans Dr Zirngibl
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to DE19681802469 priority Critical patent/DE1802469A1/de
Priority to CH1492669A priority patent/CH522567A/de
Priority to GB4913769A priority patent/GB1287614A/en
Priority to NL6915398A priority patent/NL6915398A/xx
Priority to BE740103D priority patent/BE740103A/xx
Priority to FR6934842A priority patent/FR2020441B1/fr
Priority to SE13980/69A priority patent/SE365492B/xx
Priority to JP44081035A priority patent/JPS4840799B1/ja
Publication of DE1802469A1 publication Critical patent/DE1802469A1/de
Pending 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
DE19681802469 1968-10-11 1968-10-11 Verfahren zur Herstellung von ferromagnetischem Chromdioxid Pending DE1802469A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE19681802469 DE1802469A1 (de) 1968-10-11 1968-10-11 Verfahren zur Herstellung von ferromagnetischem Chromdioxid
CH1492669A CH522567A (de) 1968-10-11 1969-10-03 Verfahren zur Herstellung von ferromagnetischem Chromdioxid
GB4913769A GB1287614A (en) 1968-10-11 1969-10-07 Process for the preparation of ferromagnetic chromium dioxide
NL6915398A NL6915398A (xx) 1968-10-11 1969-10-10
BE740103D BE740103A (xx) 1968-10-11 1969-10-10
FR6934842A FR2020441B1 (xx) 1968-10-11 1969-10-10
SE13980/69A SE365492B (xx) 1968-10-11 1969-10-10
JP44081035A JPS4840799B1 (xx) 1968-10-11 1969-10-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681802469 DE1802469A1 (de) 1968-10-11 1968-10-11 Verfahren zur Herstellung von ferromagnetischem Chromdioxid

Publications (1)

Publication Number Publication Date
DE1802469A1 true DE1802469A1 (de) 1971-10-28

Family

ID=5710250

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681802469 Pending DE1802469A1 (de) 1968-10-11 1968-10-11 Verfahren zur Herstellung von ferromagnetischem Chromdioxid

Country Status (8)

Country Link
JP (1) JPS4840799B1 (xx)
BE (1) BE740103A (xx)
CH (1) CH522567A (xx)
DE (1) DE1802469A1 (xx)
FR (1) FR2020441B1 (xx)
GB (1) GB1287614A (xx)
NL (1) NL6915398A (xx)
SE (1) SE365492B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244457B (de) * 1963-01-04 1967-07-13 Ernst Zimlich Motorisch angetriebener Rasenmaeher mit waagerecht umlaufendem Messer
DE2648305A1 (de) * 1975-10-31 1977-05-12 Montedison Spa Verfahren zur herstellung von ferromagnetischem chromdioxid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2022820C3 (de) * 1970-05-11 1980-01-03 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von hochkoerzitivem Chromdioxid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244457B (de) * 1963-01-04 1967-07-13 Ernst Zimlich Motorisch angetriebener Rasenmaeher mit waagerecht umlaufendem Messer
DE2648305A1 (de) * 1975-10-31 1977-05-12 Montedison Spa Verfahren zur herstellung von ferromagnetischem chromdioxid

Also Published As

Publication number Publication date
FR2020441A1 (xx) 1970-07-10
FR2020441B1 (xx) 1973-12-07
BE740103A (xx) 1970-04-10
CH522567A (de) 1972-06-30
JPS4840799B1 (xx) 1973-12-03
NL6915398A (xx) 1970-04-14
SE365492B (xx) 1974-03-25
GB1287614A (en) 1972-09-06

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