AT356062B - METHOD FOR PRODUCING MODIFIED FERROMAGNETIC CHROMDIOXIDE - Google Patents

METHOD FOR PRODUCING MODIFIED FERROMAGNETIC CHROMDIOXIDE

Info

Publication number
AT356062B
AT356062B AT800476A AT800476A AT356062B AT 356062 B AT356062 B AT 356062B AT 800476 A AT800476 A AT 800476A AT 800476 A AT800476 A AT 800476A AT 356062 B AT356062 B AT 356062B
Authority
AT
Austria
Prior art keywords
chromdioxide
producing modified
modified ferromagnetic
ferromagnetic
producing
Prior art date
Application number
AT800476A
Other languages
German (de)
Other versions
ATA800476A (en
Inventor
Giampiero Basile
Antonio Mazza
Original Assignee
Montedison Spa
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 Montedison Spa filed Critical Montedison Spa
Publication of ATA800476A publication Critical patent/ATA800476A/en
Application granted granted Critical
Publication of AT356062B publication Critical patent/AT356062B/en

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/706Record 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
    • G11B5/70626Record 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
    • G11B5/70636CrO2
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00Compounds of chromium
    • C01G37/02Oxides or hydrates thereof
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00Compounds of chromium
    • C01G37/02Oxides or hydrates thereof
    • C01G37/027Chromium dioxide
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/42Magnetic properties
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/60Optical properties, e.g. expressed in CIELAB-values
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/80Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Magnetic Record Carriers (AREA)
  • Chemical Treatment Of Metals (AREA)
AT800476A 1975-10-31 1976-10-28 METHOD FOR PRODUCING MODIFIED FERROMAGNETIC CHROMDIOXIDE AT356062B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT28915/75A IT1045191B (en) 1975-10-31 1975-10-31 PROCEDURE FOR THE PRODUCTION OF FERROMAGNETIC CHROMIUM DIOXIDE

Publications (2)

Publication Number Publication Date
ATA800476A ATA800476A (en) 1979-09-15
AT356062B true AT356062B (en) 1980-04-10

Family

ID=11224583

Family Applications (1)

Application Number Title Priority Date Filing Date
AT800476A AT356062B (en) 1975-10-31 1976-10-28 METHOD FOR PRODUCING MODIFIED FERROMAGNETIC CHROMDIOXIDE

Country Status (17)

Country Link
JP (1) JPS5274597A (en)
AT (1) AT356062B (en)
AU (1) AU502999B2 (en)
BE (1) BE847812A (en)
BR (1) BR7607234A (en)
CA (1) CA1090555A (en)
CH (1) CH625193A5 (en)
CS (1) CS207373B2 (en)
DD (1) DD127640A5 (en)
DE (1) DE2648305C3 (en)
DK (1) DK481376A (en)
ES (1) ES452891A1 (en)
FR (1) FR2329594A1 (en)
GB (1) GB1524576A (en)
IT (1) IT1045191B (en)
NL (1) NL7611785A (en)
SE (1) SE7611815L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4524008A (en) * 1983-12-16 1985-06-18 E. I. Du Pont De Nemours And Company Controlled initiation chromium dioxide synthesis
DE3728453A1 (en) * 1987-08-26 1989-03-09 Basf Ag METHOD FOR PRODUCING MODIFIED FERROMAGNETIC CHROMDIOXIDE
DE3837646A1 (en) * 1988-11-05 1990-05-10 Basf Ag NEEDLE-SHAPED, ESSENTIAL CHROMDIOXIDE, FERROMAGNETIC MATERIAL
DE4339841A1 (en) * 1993-11-23 1995-05-24 Basf Magnetics Gmbh Finely divided needle-like magnetic chromium di:oxide

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885365A (en) * 1956-10-22 1959-05-05 Du Pont Ruthenium-modified chromium oxide ferromagnetic compositions, their pre-aration and use
DE1467328B2 (en) * 1963-07-24 1971-06-16 Farbenfabriken Bayer AG, 5090 Le verkusen FERROMAGNETIC MODIFIED CHROME DIOXIDE
US3278263A (en) * 1964-11-27 1966-10-11 Du Pont Ferromagnetic chromium dioxide and preparation thereof
CH468923A (en) * 1967-07-21 1969-02-28 Ferag Ag Transport device for flat structures occurring in a scale formation
DE1802469A1 (en) * 1968-10-11 1971-10-28 Bayer Ag Process for the production of ferromagnetic chromium dioxide
DE1922409A1 (en) * 1969-05-02 1970-11-12 Bayer Ag Process for the production of ferromagnetic chromium dioxide
DE2022820C3 (en) * 1970-05-11 1980-01-03 Basf Ag, 6700 Ludwigshafen Process for the production of highly coercive chromium dioxide
AU452489B2 (en) * 1971-03-04 1974-08-16 Montecatini Edisons. P. A Process for preparing ferromagnetic chromium dioxide
JPS497198A (en) * 1972-05-12 1974-01-22
IT956230B (en) * 1972-04-22 1973-10-10 Montedison Spa COMPOSITION OF MODIFIED FERROMAGNETIC CHROME DIOXIDE AND PREPARATION P OCES SO

Also Published As

Publication number Publication date
CS207373B2 (en) 1981-07-31
AU1911876A (en) 1978-05-04
BE847812A (en) 1977-04-29
DE2648305C3 (en) 1982-11-25
SE7611815L (en) 1977-05-01
DK481376A (en) 1977-05-01
DE2648305B2 (en) 1980-07-03
FR2329594A1 (en) 1977-05-27
ES452891A1 (en) 1977-10-16
AU502999B2 (en) 1979-08-16
DD127640A5 (en) 1977-10-05
FR2329594B1 (en) 1981-07-31
JPS5274597A (en) 1977-06-22
CA1090555A (en) 1980-12-02
ATA800476A (en) 1979-09-15
GB1524576A (en) 1978-09-13
JPS5722893B2 (en) 1982-05-15
CH625193A5 (en) 1981-09-15
NL7611785A (en) 1977-05-03
DE2648305A1 (en) 1977-05-12
BR7607234A (en) 1977-09-13
IT1045191B (en) 1980-05-10

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Legal Events

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