FR2134445B1 - - Google Patents

Info

Publication number
FR2134445B1
FR2134445B1 FR7214455A FR7214455A FR2134445B1 FR 2134445 B1 FR2134445 B1 FR 2134445B1 FR 7214455 A FR7214455 A FR 7214455A FR 7214455 A FR7214455 A FR 7214455A FR 2134445 B1 FR2134445 B1 FR 2134445B1
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
FR7214455A
Other versions
FR2134445A1 (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 FR2134445A1 publication Critical patent/FR2134445A1/fr
Application granted granted Critical
Publication of FR2134445B1 publication Critical patent/FR2134445B1/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Chemically Coating (AREA)
  • Hard Magnetic Materials (AREA)
FR7214455A 1971-04-24 1972-04-24 Expired FR2134445B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712120206 DE2120206A1 (de) 1971-04-24 1971-04-24 Ferromagnetische Chromdioxidkristalle

Publications (2)

Publication Number Publication Date
FR2134445A1 FR2134445A1 (fr) 1972-12-08
FR2134445B1 true FR2134445B1 (fr) 1976-10-29

Family

ID=5805871

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7214455A Expired FR2134445B1 (fr) 1971-04-24 1972-04-24

Country Status (6)

Country Link
US (1) US3841907A (fr)
CA (1) CA995889A (fr)
DE (1) DE2120206A1 (fr)
FR (1) FR2134445B1 (fr)
GB (1) GB1380605A (fr)
IT (1) IT962074B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386486A1 (fr) * 1977-04-07 1978-11-03 Montedison Spa Bioxyde de chrome ferromagnetique stabilise et son procede de preparation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585141A (en) * 1969-05-05 1971-06-15 Du Pont Stabilization of chromium dioxide by monomeric cyclic amines
US3512930A (en) * 1969-05-07 1970-05-19 Du Pont Stabilized ferromagnetic chromium dioxide
US3586630A (en) * 1969-05-08 1971-06-22 Du Pont Stabilization of chromium dioxide by organophosphorus compounds
US3686031A (en) * 1969-11-26 1972-08-22 Du Pont Metal phosphate coated ferromagnetic chromium oxide and its preparation
JPS4843436B1 (fr) * 1970-10-20 1973-12-18

Also Published As

Publication number Publication date
CA995889A (en) 1976-08-31
IT962074B (it) 1973-12-20
DE2120206A1 (de) 1972-11-02
US3841907A (en) 1974-10-15
FR2134445A1 (fr) 1972-12-08
GB1380605A (fr) 1975-01-15

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Legal Events

Date Code Title Description
ST Notification of lapse