IT1143591B - Procedimento per produrre pigmenti di elevata densita' di ossido di ferro,in particolare per la registrazione magnetica - Google Patents

Procedimento per produrre pigmenti di elevata densita' di ossido di ferro,in particolare per la registrazione magnetica

Info

Publication number
IT1143591B
IT1143591B IT50410/77A IT5041077A IT1143591B IT 1143591 B IT1143591 B IT 1143591B IT 50410/77 A IT50410/77 A IT 50410/77A IT 5041077 A IT5041077 A IT 5041077A IT 1143591 B IT1143591 B IT 1143591B
Authority
IT
Italy
Prior art keywords
procedure
high density
iron oxide
producing high
oxide pigments
Prior art date
Application number
IT50410/77A
Other languages
English (en)
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Application granted granted Critical
Publication of IT1143591B publication Critical patent/IT1143591B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/22—Compounds of iron
    • C09C1/24—Oxides of iron
    • 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
    • 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
    • G11B5/70668—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 containing a dopant
    • G11B5/70673—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 containing a dopant containing Co
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/30—Three-dimensional structures
    • 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

  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Hard Magnetic Materials (AREA)
IT50410/77A 1976-07-27 1977-07-25 Procedimento per produrre pigmenti di elevata densita' di ossido di ferro,in particolare per la registrazione magnetica IT1143591B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2633597A DE2633597C2 (de) 1976-07-27 1976-07-27 Verfahren zur Herstellung von nadel- bis prismenförmigen ferrimagnetischen Eisenoxidpigmenten zur magnetischen Signalaufzeichnung

Publications (1)

Publication Number Publication Date
IT1143591B true IT1143591B (it) 1986-10-22

Family

ID=5983991

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50410/77A IT1143591B (it) 1976-07-27 1977-07-25 Procedimento per produrre pigmenti di elevata densita' di ossido di ferro,in particolare per la registrazione magnetica

Country Status (8)

Country Link
US (1) US4140539A (it)
JP (1) JPS5314736A (it)
BE (1) BE857184A (it)
DE (1) DE2633597C2 (it)
FR (1) FR2359884A1 (it)
GB (1) GB1538040A (it)
IT (1) IT1143591B (it)
NL (1) NL183993C (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904491A1 (de) * 1979-02-07 1980-08-21 Bayer Ag Plaettchenfoermige eisenoxidpigmente und verfahren zu deren herstellung sowie deren verwendung
NL7901438A (nl) * 1979-02-23 1980-08-26 Philips Nv Werkwijze voor de bereiding van een feooh pigment.
DE2909480A1 (de) * 1979-03-10 1980-09-11 Bayer Ag Ferromagnetisches, im wesentlichen aus eisen bestehendes metallpigment und verfahren zu dessen herstellung
JPS5917050B2 (ja) * 1979-05-30 1984-04-19 チタン工業株式会社 黄色酸化鉄顔料の耐熱性改善方法
JPS55158131A (en) * 1979-05-30 1980-12-09 Titan Kogyo Kk Heat-resistant yellow iron oxide pigment and its manufacture
US4291010A (en) * 1979-09-05 1981-09-22 Titan Kogyo Kabushiki Kaisha Heat stable yellow iron oxides
DE3001438C2 (de) * 1980-01-16 1984-05-17 Shiseido Co. Ltd., Tokyo Kosmetisches Mittel
US4514216A (en) * 1983-04-30 1985-04-30 Toda Kogyo Corp. Acicular ferromagnetic alloy particles for magnetic recording and process for producing the same
DE3432224A1 (de) * 1984-09-01 1986-03-13 Bayer Ag, 5090 Leverkusen Hoeherkoerzitive isometrische eisenoxide, verfahren zu ihrer herstellung sowie deren verwendung
DE3819626A1 (de) * 1988-06-09 1989-12-14 Bayer Ag Thermostabile zinkferrit-farbpigmente, verfahren zu ihrer herstellung sowie deren verwendung
DE68923156T2 (de) * 1988-12-01 1995-12-07 Ishihara Sangyo Kaisha Verfahren zur Herstellung von magnetischen Eisenoxidteilchen für magnetische Aufzeichnung.
DE4342331A1 (de) * 1993-12-11 1995-06-14 Krueger Gmbh & Co Kg Pigmentgranulat zum Einfärben von Baustoffen
US6416682B1 (en) * 1999-11-04 2002-07-09 Ceramic Oxides International B.V. Method of producing minerals under near-critical, critical and supercritical conditions
RU2303046C1 (ru) * 2006-01-10 2007-07-20 Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" Способ получения красного железоокисного пигмента
WO2008081917A1 (ja) * 2007-01-05 2008-07-10 Tokyo Institute Of Technology 球状フェライトナノ粒子及びその製造方法
US20150306246A1 (en) * 2012-12-07 2015-10-29 The Trustees Of Dartmouth College Magnetic nanoparticles, composites, suspensions and colloids with high specific absorption rate (sar)
CN110228824A (zh) * 2018-11-26 2019-09-13 合肥学院 一种磁性氧化铁纳米材料的制备方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694656A (en) * 1947-07-25 1954-11-16 Armour Res Found Magnetic impulse record member, magnetic material, and method of making magnetic material
US3240621A (en) * 1960-11-14 1966-03-15 Dictaphone Corp High viscosity dispersions of magnetic pigments
GB1144285A (en) * 1967-02-09 1969-03-05 Matsushita Electric Industrial Co Ltd Improvements in and relating to magnetic materials and devices
DE1694167C3 (de) * 1967-07-13 1975-04-24 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Emulsionen
JPS4810994B1 (it) * 1969-07-26 1973-04-09
NL7018467A (it) * 1969-12-24 1971-06-28
US3989794A (en) * 1971-01-07 1976-11-02 Eastman Kodak Company Process of manufacturing ferrite bodies of low porosity
JPS5522002B2 (it) * 1974-04-19 1980-06-13
JPS5719053B2 (it) * 1974-09-20 1982-04-20
JPS5138099A (it) * 1974-09-25 1976-03-30 Fuji Photo Film Co Ltd
IT1028343B (it) * 1975-01-14 1979-01-30 Montedison Spa Procedimento per la preparazione di ossido ferrico aciculare ferri magnetico

Also Published As

Publication number Publication date
BE857184A (fr) 1978-01-27
NL7708330A (nl) 1978-01-31
GB1538040A (en) 1979-01-10
FR2359884A1 (fr) 1978-02-24
DE2633597A1 (de) 1978-02-02
NL183993B (nl) 1988-10-17
FR2359884B1 (it) 1980-12-26
DE2633597C2 (de) 1983-01-13
JPS5523216B2 (it) 1980-06-21
NL183993C (nl) 1989-03-16
JPS5314736A (en) 1978-02-09
US4140539A (en) 1979-02-20

Similar Documents

Publication Publication Date Title
IT1079680B (it) Procedimento per produrre pigmenti di ossido di ferro con migliorata resistenza all'ossidazione
IT1143591B (it) Procedimento per produrre pigmenti di elevata densita' di ossido di ferro,in particolare per la registrazione magnetica
IT1019333B (it) Pigmenti di ossido di ferro magne tici e procedimento per produrli
IT1089786B (it) Nucleo magnetico in due parti
BE846849A (fr) Pigments magnetiques ameliores d'oxyde de fer pour la fabrication de couches magnetiques,
FR2352867A1 (fr) Pigments nacres de mica recouvert d'oxyde de fer
JPS55163665A (en) Magnetic head slider
FR2341339A1 (fr) Jouet pour enfants, en forme d'equipement hospitalier
NL192903B (nl) Elektrische meerfasenmachine met regelbare magnetische fluxdichtheid.
JPS52156929A (en) Microorganism killing giant reticular ton exchange resin composition and its manufacturing method and usage
IT1117229B (it) Procedimento per produrre pigmenti di ossido di ferro rosso
JPS551700A (en) Multiple track magnetic head and production thereof
IT1086800B (it) Procedimento per produrre pigmenti neri di ossido di ferro
IT1073222B (it) Procedimento per produrre in continuo pigmenti neri di ossido di ferro
JPS5330497A (en) Cobalttdoped acicular magnetic iron oxide and process for preparing same
IT1079945B (it) Metodo e mezzi per l'elaborazione delle informazioni
IT1145412B (it) Perfezionamento nelle tastiere magnetiche
IT1125591B (it) Ossido di ferro magentico perfezionato modificato con cobalto
IT8048357A0 (it) Supporto per l'armatura di magneti in particolare per minirele' compatti
JPS5358497A (en) Cobalttdoped acicular magnetic iron oxide and process for preparing same
DE3582923D1 (de) Verfahren zur herstellung von isometrischen magnetischen eisenoxidpigmenten.
JPS51141609A (en) Magnetic head
IT7922160A0 (it) Bobina d'induttanza ad alta corrente.
GB2017199B (en) Magnetic lock
IT1092163B (it) Composizioni detergenti di bassa densita' e raltivo procedimento di produzione