CA1013130A - Stabilized chromium dioxide and method of preparing same - Google Patents

Stabilized chromium dioxide and method of preparing same

Info

Publication number
CA1013130A
CA1013130A CA171,801A CA171801A CA1013130A CA 1013130 A CA1013130 A CA 1013130A CA 171801 A CA171801 A CA 171801A CA 1013130 A CA1013130 A CA 1013130A
Authority
CA
Canada
Prior art keywords
preparing same
chromium dioxide
stabilized chromium
stabilized
dioxide
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.)
Expired
Application number
CA171,801A
Other languages
English (en)
Other versions
CA171801S (en
Inventor
Carlo Scotti
Giampiero Basile
Pierfrancesco Aspes
Ugo ?Ontiglio
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.)
Montedison SpA
Original Assignee
Montecatini Edison 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
Priority claimed from IT2477372A external-priority patent/IT955797B/it
Priority claimed from IT2139873A external-priority patent/IT1045821B/it
Application filed by Montecatini Edison SpA filed Critical Montecatini Edison SpA
Application granted granted Critical
Publication of CA1013130A publication Critical patent/CA1013130A/en
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
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • 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)
  • Paints Or Removers (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
CA171,801A 1972-05-24 1973-05-18 Stabilized chromium dioxide and method of preparing same Expired CA1013130A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2477372A IT955797B (it) 1972-05-24 1972-05-24 Biossido di cromo stabilizzato
IT2139873A IT1045821B (it) 1973-03-09 1973-03-09 Biossido di cromo stabilizzato

Publications (1)

Publication Number Publication Date
CA1013130A true CA1013130A (en) 1977-07-05

Family

ID=26327886

Family Applications (1)

Application Number Title Priority Date Filing Date
CA171,801A Expired CA1013130A (en) 1972-05-24 1973-05-18 Stabilized chromium dioxide and method of preparing same

Country Status (8)

Country Link
JP (1) JPS4949898A (US07696358-20100413-C00002.png)
CA (1) CA1013130A (US07696358-20100413-C00002.png)
CH (1) CH604343A5 (US07696358-20100413-C00002.png)
DE (1) DE2325719A1 (US07696358-20100413-C00002.png)
FR (1) FR2185840B1 (US07696358-20100413-C00002.png)
GB (1) GB1435392A (US07696358-20100413-C00002.png)
NL (1) NL7306877A (US07696358-20100413-C00002.png)
SE (1) SE404274B (US07696358-20100413-C00002.png)

Families Citing this family (5)

* 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
JPS55132005A (en) * 1979-04-02 1980-10-14 Ken Namikawa Ferromagnetic powder and manufacture therefor
US4382982A (en) * 1979-12-07 1983-05-10 Ici Australia Limited Process for protecting magnetic particles with chromium oxide
NL8100014A (nl) * 1981-01-06 1982-08-02 Philips Nv Magnetisch registratie element alsmede methoden voor de vervaardiging ervan.
DE3610411A1 (de) * 1986-03-27 1987-10-01 Basf Ag Verfahren zur stabilisierung von nadelfoermigem ferromagnetischem chromdioxid

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686031A (en) * 1969-11-26 1972-08-22 Du Pont Metal phosphate coated ferromagnetic chromium oxide and its preparation

Also Published As

Publication number Publication date
FR2185840A1 (US07696358-20100413-C00002.png) 1974-01-04
JPS4949898A (US07696358-20100413-C00002.png) 1974-05-15
CH604343A5 (US07696358-20100413-C00002.png) 1978-09-15
FR2185840B1 (US07696358-20100413-C00002.png) 1976-06-11
NL7306877A (US07696358-20100413-C00002.png) 1973-11-27
DE2325719A1 (de) 1973-12-13
SE404274B (sv) 1978-09-25
GB1435392A (en) 1976-05-12

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