IT957573B - FERRIC OXIDE SYNTHETIC RANGE AND RELATED PRODUCTION PROCESS - Google Patents

FERRIC OXIDE SYNTHETIC RANGE AND RELATED PRODUCTION PROCESS

Info

Publication number
IT957573B
IT957573B IT4907072A IT4907072A IT957573B IT 957573 B IT957573 B IT 957573B IT 4907072 A IT4907072 A IT 4907072A IT 4907072 A IT4907072 A IT 4907072A IT 957573 B IT957573 B IT 957573B
Authority
IT
Italy
Prior art keywords
production process
ferric oxide
related production
oxide synthetic
synthetic range
Prior art date
Application number
IT4907072A
Other languages
Italian (it)
Original Assignee
Pfizer
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 Pfizer filed Critical Pfizer
Application granted granted Critical
Publication of IT957573B publication Critical patent/IT957573B/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
    • G11B5/70642—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 iron oxides
    • G11B5/70652—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 iron oxides gamma - Fe2 O3
    • G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising agents
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide (Fe2O3)
    • 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
    • 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
    • G11B5/70642—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 iron oxides
    • G11B5/70647—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 iron oxides with a skin
    • 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
    • G11B5/70642—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 iron oxides
    • G11B5/70652—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 iron oxides gamma - Fe2 O3
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • 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
    • C01P2006/40—Electric 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
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
  • Compounds Of Iron (AREA)
IT4907072A 1971-03-17 1972-03-17 FERRIC OXIDE SYNTHETIC RANGE AND RELATED PRODUCTION PROCESS IT957573B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12533171A 1971-03-17 1971-03-17
US22563672A 1972-02-11 1972-02-11

Publications (1)

Publication Number Publication Date
IT957573B true IT957573B (en) 1973-10-20

Family

ID=26823475

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4907072A IT957573B (en) 1971-03-17 1972-03-17 FERRIC OXIDE SYNTHETIC RANGE AND RELATED PRODUCTION PROCESS

Country Status (14)

Country Link
JP (1) JPS5549016B1 (en)
AR (1) AR199878A1 (en)
AU (1) AU442230B2 (en)
BE (1) BE780830A (en)
CA (1) CA980536A (en)
CH (1) CH547234A (en)
DE (1) DE2212435C3 (en)
FI (1) FI54284C (en)
FR (1) FR2130407B1 (en)
GB (1) GB1392196A (en)
IE (1) IE36177B1 (en)
IT (1) IT957573B (en)
NL (1) NL167660C (en)
SE (1) SE389329B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735316C3 (en) * 1977-08-05 1981-01-29 Basf Ag, 6700 Ludwigshafen Process for the production of acicular, ferrimagnetic iron oxides
DE2801395C2 (en) * 1978-01-13 1982-04-22 Bayer Ag, 5090 Leverkusen Thermally stabilized ferrimagnetic iron oxide
DE2805405A1 (en) * 1978-02-09 1979-08-16 Basf Ag PROCESS FOR THE PRODUCTION OF NEEDLE-SHAPED FERRIMAGNETIC IRON OXIDES
DE2945203A1 (en) * 1979-11-09 1981-06-04 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING (GAMMA) IRON (III) OXIDE
JPS5816364U (en) * 1981-07-25 1983-02-01 株式会社新潟鐵工所 Timing adjustment device for concrete pumps
DE3224325A1 (en) * 1982-06-30 1984-01-05 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING NEEDLE-SHAPED, FERRIMAGNETIC IRON OXIDES
DE3417793A1 (en) * 1984-05-14 1985-11-14 Basf Ag, 6700 Ludwigshafen METHOD FOR THE PRODUCTION OF FINE-PARTIC, NEEDLE-SHAPED AND HIGH-CERCITIVE HEXAGONAL FERRITES AND THEIR USE FOR THE PRODUCTION OF MAGNETIC RECORDING CARRIERS AND PLASTOFERRITE
DE3516885A1 (en) * 1985-05-10 1986-11-13 Basf Ag, 6700 Ludwigshafen METHOD FOR THE PRODUCTION OF NEEDLE-SHAPED, COBAL-CONTAINING FERRIMAGNETIC IRON OXIDS
DE3518481A1 (en) * 1985-05-23 1986-11-27 Basf Ag, 6700 Ludwigshafen METHOD FOR THE PRODUCTION OF FINE-PARTIC AND NEEDLE-SHAPED HEXAGONAL FERRITES AND THEIR USE FOR THE PRODUCTION OF MAGNETIC RECORDING CARRIERS AND PLASTOFERRITE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1244896A (en) * 1960-01-11 1960-10-28 C K Williams & Co Process for obtaining ferro-magnetic iron oxide powders, in particular for magnetic recording elements and powders and elements obtained by this process
US3498748A (en) * 1967-05-18 1970-03-03 Pfizer & Co C Preparation of magnetic ferric oxide

Also Published As

Publication number Publication date
FR2130407A1 (en) 1972-11-03
AR199878A1 (en) 1974-10-08
NL7203583A (en) 1972-09-19
FI54284B (en) 1978-07-31
AU442230B2 (en) 1973-11-01
AU4002372A (en) 1973-09-20
CH547234A (en) 1974-03-29
IE36177L (en) 1972-09-17
DE2212435A1 (en) 1972-10-19
DE2212435C3 (en) 1978-04-20
SE389329B (en) 1976-11-01
GB1392196A (en) 1975-04-30
NL167660C (en) 1982-01-18
NL167660B (en) 1981-08-17
IE36177B1 (en) 1976-09-01
FI54284C (en) 1978-11-10
DE2212435B2 (en) 1977-09-01
CA980536A (en) 1975-12-30
FR2130407B1 (en) 1974-12-13
BE780830A (en) 1972-09-18
JPS5549016B1 (en) 1980-12-09

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