NL7611785A - PROCESS FOR THE PREPARATION OF FERROMAGNETIC CHROME DIOXIDE AND ANY FERROMAGNETIC TAPE CONTAINING THIS. - Google Patents

PROCESS FOR THE PREPARATION OF FERROMAGNETIC CHROME DIOXIDE AND ANY FERROMAGNETIC TAPE CONTAINING THIS.

Info

Publication number
NL7611785A
NL7611785A NL7611785A NL7611785A NL7611785A NL 7611785 A NL7611785 A NL 7611785A NL 7611785 A NL7611785 A NL 7611785A NL 7611785 A NL7611785 A NL 7611785A NL 7611785 A NL7611785 A NL 7611785A
Authority
NL
Netherlands
Prior art keywords
ferromagnetic
preparation
tape containing
chrome dioxide
dioxide
Prior art date
Application number
NL7611785A
Other languages
Dutch (nl)
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 NL7611785A publication Critical patent/NL7611785A/en

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
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C01G37/027—Chromium dioxide
    • 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
    • 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
    • C01P2006/80—Compositional 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)
NL7611785A 1975-10-31 1976-10-25 PROCESS FOR THE PREPARATION OF FERROMAGNETIC CHROME DIOXIDE AND ANY FERROMAGNETIC TAPE CONTAINING THIS. NL7611785A (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 (1)

Publication Number Publication Date
NL7611785A true NL7611785A (en) 1977-05-03

Family

ID=11224583

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7611785A NL7611785A (en) 1975-10-31 1976-10-25 PROCESS FOR THE PREPARATION OF FERROMAGNETIC CHROME DIOXIDE AND ANY FERROMAGNETIC TAPE CONTAINING THIS.

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
DE1467238A1 (en) * 1963-07-24 1969-01-23
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
DD127640A5 (en) 1977-10-05
FR2329594B1 (en) 1981-07-31
AT356062B (en) 1980-04-10
ATA800476A (en) 1979-09-15
GB1524576A (en) 1978-09-13
DE2648305B2 (en) 1980-07-03
FR2329594A1 (en) 1977-05-27
AU1911876A (en) 1978-05-04
AU502999B2 (en) 1979-08-16
DE2648305A1 (en) 1977-05-12
CS207373B2 (en) 1981-07-31
BE847812A (en) 1977-04-29
IT1045191B (en) 1980-05-10
DK481376A (en) 1977-05-01
JPS5274597A (en) 1977-06-22
ES452891A1 (en) 1977-10-16
JPS5722893B2 (en) 1982-05-15
SE7611815L (en) 1977-05-01
BR7607234A (en) 1977-09-13
CA1090555A (en) 1980-12-02
DE2648305C3 (en) 1982-11-25
CH625193A5 (en) 1981-09-15

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BV The patent application has lapsed