FI54284C - Syntetisk magnetisk gamma-ferrioxid foer anvaendning i blandning med ett bindemedel saosom ett magnetimpulsregistreringsmaterial - Google Patents

Syntetisk magnetisk gamma-ferrioxid foer anvaendning i blandning med ett bindemedel saosom ett magnetimpulsregistreringsmaterial

Info

Publication number
FI54284C
FI54284C FI67972A FI67972A FI54284C FI 54284 C FI54284 C FI 54284C FI 67972 A FI67972 A FI 67972A FI 67972 A FI67972 A FI 67972A FI 54284 C FI54284 C FI 54284C
Authority
FI
Finland
Prior art keywords
ett
magnetimpulsregistreringsmaterial
blindning
ferrioxide
bindemedel
Prior art date
Application number
FI67972A
Other languages
English (en)
Other versions
FI54284B (fi
Inventor
Leonard Muhlenberg Bennetch
Harry Sandt Greiner
Kenneth Roy Hancock
Mark Hoffman
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
Publication of FI54284B publication Critical patent/FI54284B/fi
Application granted granted Critical
Publication of FI54284C publication Critical patent/FI54284C/fi

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)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
FI67972A 1971-03-17 1972-03-14 Syntetisk magnetisk gamma-ferrioxid foer anvaendning i blandning med ett bindemedel saosom ett magnetimpulsregistreringsmaterial FI54284C (fi)

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 (2)

Publication Number Publication Date
FI54284B FI54284B (fi) 1978-07-31
FI54284C true FI54284C (fi) 1978-11-10

Family

ID=26823475

Family Applications (1)

Application Number Title Priority Date Filing Date
FI67972A FI54284C (fi) 1971-03-17 1972-03-14 Syntetisk magnetisk gamma-ferrioxid foer anvaendning i blandning med ett bindemedel saosom ett magnetimpulsregistreringsmaterial

Country Status (14)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735316C3 (de) * 1977-08-05 1981-01-29 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadeiförmigen, ferrimagnetischen Eisenoxiden
DE2801395C2 (de) * 1978-01-13 1982-04-22 Bayer Ag, 5090 Leverkusen Thermisch stabilisiertes ferrimagnetisches Eisenoxid
DE2805405A1 (de) * 1978-02-09 1979-08-16 Basf Ag Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden
DE2945203A1 (de) * 1979-11-09 1981-06-04 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von (gamma)-eisen (iii) oxid
JPS5816364U (ja) * 1981-07-25 1983-02-01 株式会社新潟鐵工所 コンクリ−トポンプにおけるタイミング調整装置
DE3224325A1 (de) * 1982-06-30 1984-01-05 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden
DE3417793A1 (de) * 1984-05-14 1985-11-14 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung feinteiliger, nadelfoermiger und hochkoerzitiver hexagonaler ferrite sowie ihre verwendung zur herstellung magnetischer aufzeichnungstraeger und plastoferrite
DE3516885A1 (de) * 1985-05-10 1986-11-13 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung nadelfoermiger, kobalthaltiger ferrimagnetischer eisenoxide
DE3518481A1 (de) * 1985-05-23 1986-11-27 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung feinteiliger und nadelfoermiger hexagonaler ferrite sowie ihre verwendung zur herstellung magnetischer aufzeichnungstraeger und plastoferrite

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1244896A (fr) * 1960-01-11 1960-10-28 C K Williams & Co Procédé d'obtention de poudres d'oxyde de fer ferro-magnétiques notamment pour éléments d'enregistrement magnétiques et poudres et éléments obtenus par ce procédé
US3498748A (en) * 1967-05-18 1970-03-03 Pfizer & Co C Preparation of magnetic ferric oxide

Also Published As

Publication number Publication date
IE36177L (en) 1972-09-17
IE36177B1 (en) 1976-09-01
AR199878A1 (es) 1974-10-08
NL7203583A (fi) 1972-09-19
NL167660C (nl) 1982-01-18
DE2212435B2 (de) 1977-09-01
DE2212435A1 (de) 1972-10-19
FR2130407B1 (fi) 1974-12-13
GB1392196A (en) 1975-04-30
FR2130407A1 (fi) 1972-11-03
CH547234A (fr) 1974-03-29
SE389329B (sv) 1976-11-01
FI54284B (fi) 1978-07-31
CA980536A (en) 1975-12-30
AU442230B2 (en) 1973-11-01
NL167660B (nl) 1981-08-17
JPS5549016B1 (fi) 1980-12-09
DE2212435C3 (de) 1978-04-20
IT957573B (it) 1973-10-20
AU4002372A (en) 1973-09-20
BE780830A (fr) 1972-09-18

Similar Documents

Publication Publication Date Title
IT958456B (it) Perfezionamento nei nastri per registrazioni magnetiche
FI56251C (fi) Med ett kombinationsmaterial belagd vals saerskilt en pappersmaskinsvals
DK132753C (da) Forbindelser med indekticid virkning
IT996611B (it) Minicassetta per nastro magnetico
IT960879B (it) Cassetta per nastri magnetici
BE787830A (fr) Diffuseur
CH512076A (de) Magnetfeldsonde
BE791686A (fr) Agencement magnetique
FI54284C (fi) Syntetisk magnetisk gamma-ferrioxid foer anvaendning i blandning med ett bindemedel saosom ett magnetimpulsregistreringsmaterial
BE759647A (fr) Transporteur magnetique
BE783092A (fr) Agencement magnetique
AT314675B (de) Magnetische Lagenanzeigevorrichtung
IT1041211B (it) Perfezionamento nei giranstri per nastri magnetici
CH544935A (de) Dichtemessgerät
CH544934A (de) Dichtemessgerät
SE390456B (sv) Tethetsmetare
FI55459B (fi) Saekerhetsanordning vid ett arbetsredskap saerskilt en motorsaog
CH536683A (de) Magnetspannplatte
BE781316A (fr) Agencement magnetique
IT952230B (it) Perfezionamento nelle bussole magnetiche
AT318763B (de) Magnetische Lagenanzeigeanordnung
FI56020B (fi) Foerfarande foer behandling av skumplastfoeremaol vilka skall foerses med ett taeckskikt av polyesterharts
IT952124B (it) Cassetta per nastro magnetico
BE766904A (nl) Magnetisch registreermateriaal
BR7208841D0 (pt) Conjunto magnetico