NL7410375A - Magnetische pigmenten met verbeterde orienteer- baarheid alsmede werkwijze voor de bereiding daarvan. - Google Patents

Magnetische pigmenten met verbeterde orienteer- baarheid alsmede werkwijze voor de bereiding daarvan.

Info

Publication number
NL7410375A
NL7410375A NL7410375A NL7410375A NL7410375A NL 7410375 A NL7410375 A NL 7410375A NL 7410375 A NL7410375 A NL 7410375A NL 7410375 A NL7410375 A NL 7410375A NL 7410375 A NL7410375 A NL 7410375A
Authority
NL
Netherlands
Prior art keywords
preparing
magnetic pigments
orientability
improved
improved orientability
Prior art date
Application number
NL7410375A
Other languages
English (en)
Other versions
NL178886B (nl
NL178886C (nl
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
Priority claimed from DE19732339142 external-priority patent/DE2339142C3/de
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of NL7410375A publication Critical patent/NL7410375A/nl
Publication of NL178886B publication Critical patent/NL178886B/nl
Application granted granted Critical
Publication of NL178886C publication Critical patent/NL178886C/nl

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
    • G11B5/70668—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
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • 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
    • G11B5/70652—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
    • G11B5/70657—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 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
    • G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising agents
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
    • C01P2002/82—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by IR- or Raman-data
    • 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
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
NLAANVRAGE7410375,A 1973-08-02 1974-08-01 Werkwijze voor het bereiden van naaldvormige, magnetische ijzeroxydepigmenten, alsmede magnetische registratiedrager, vervaardigd door toepassing van deze pigmenten. NL178886C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732339142 DE2339142C3 (de) 1973-08-02 Magnetpigmente mit verbesserter Ausrichtbarkeit und Verfahren zu ihrer Herstellung

Publications (3)

Publication Number Publication Date
NL7410375A true NL7410375A (nl) 1975-02-04
NL178886B NL178886B (nl) 1986-01-02
NL178886C NL178886C (nl) 1986-06-02

Family

ID=5888671

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7410375,A NL178886C (nl) 1973-08-02 1974-08-01 Werkwijze voor het bereiden van naaldvormige, magnetische ijzeroxydepigmenten, alsmede magnetische registratiedrager, vervaardigd door toepassing van deze pigmenten.

Country Status (9)

Country Link
US (1) US4014710A (nl)
JP (1) JPS5725967B2 (nl)
BE (1) BE818294A (nl)
CA (1) CA1039049A (nl)
FR (1) FR2239508B1 (nl)
GB (1) GB1455616A (nl)
IT (1) IT1018775B (nl)
NL (1) NL178886C (nl)
PL (1) PL101198B1 (nl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326454A1 (fr) * 1975-10-02 1977-04-29 Dynamit Nobel Ag Pigments magnetiques ameliores d'oxyde de fer pour la fabrication de couches magnetiques

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098700A (nl) * 1973-12-31 1975-08-05
JPS51134899A (en) * 1975-05-17 1976-11-22 Hitachi Maxell Ltd Processing method of magnetic powder
JPS51146399U (nl) * 1975-05-20 1976-11-24
US4115106A (en) * 1976-10-20 1978-09-19 National Standard Company Method for producing metallic oxide compounds
DE2815712A1 (de) * 1978-04-12 1979-10-25 Bayer Ag Eisenoxide zur magnetischen signalaufzeichnung und verfahren zu deren herstellung
JPS5533091A (en) * 1979-07-26 1980-03-08 Fujitsu Ltd Method of manufacturing magnetic recording magnetic powder
EP0028796B1 (de) * 1979-11-13 1983-07-13 Bayer Ag Beschichtete magnetische Metall- und Legierungspigmente, Verfahren zu ihrer Herstellung und ihre Verwendung
US5110658A (en) * 1987-10-19 1992-05-05 Konica Corporation Magnetic recording medium
US4888368A (en) * 1988-05-12 1989-12-19 Dow Corning Corporation Method of inhibiting the discoloration of emulsions and discoloration resistant emulsion compositions
DE3826770A1 (de) * 1988-08-06 1990-02-08 Bayer Ag Nadelfoermige legierungspulver auf eisenbasis, verfahren zu ihrer herstellung sowie deren verwendung
DE102006023244A1 (de) * 2006-05-18 2007-11-22 Lanxess Deutschland Gmbh Oxidationsstabile Eisenoxidpigmente, Verfahren zu ihrer Herstellung sowie deren Verwendung
EP2697314A1 (de) * 2011-04-12 2014-02-19 Basf Se Hydrophobe, funktionalisierte partikel
JP6968045B2 (ja) * 2018-08-28 2021-11-17 富士フイルム株式会社 β−オキシ水酸化鉄系化合物の粉体、β−オキシ水酸化鉄系化合物ゾル、ε−酸化鉄系化合物の粉体の製造方法、及び磁気記録媒体の製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2760876A (en) * 1952-11-25 1956-08-28 Siliphane Corp Of America Water resistant coating compositions
US2886460A (en) * 1954-09-14 1959-05-12 Du Pont Organophilic and hydrophilic composition
US3004859A (en) * 1958-05-28 1961-10-17 Gen Electric Process for treating fillers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326454A1 (fr) * 1975-10-02 1977-04-29 Dynamit Nobel Ag Pigments magnetiques ameliores d'oxyde de fer pour la fabrication de couches magnetiques

Also Published As

Publication number Publication date
GB1455616A (en) 1976-11-17
IT1018775B (it) 1977-10-20
DE2339142A1 (de) 1975-02-27
NL178886B (nl) 1986-01-02
BE818294A (fr) 1975-01-31
US4014710A (en) 1977-03-29
CA1039049A (en) 1978-09-26
JPS5044498A (nl) 1975-04-21
FR2239508B1 (nl) 1978-02-17
FR2239508A1 (nl) 1975-02-28
NL178886C (nl) 1986-06-02
DE2339142B2 (de) 1977-04-07
PL101198B1 (pl) 1978-12-30
JPS5725967B2 (nl) 1982-06-02

Similar Documents

Publication Publication Date Title
NL7412480A (nl) Magnetisch ijzeroxyde met verbeterde orienteer- baarheid alsmede werkwijze voor het bereiden daarvan.
NL7414561A (nl) Anti-transpiratiemiddel en werkwijze ter bereiding daarvan.
NL176468C (nl) Werkwijze voor het bereiden van polyetherimiden en gevormde voortbrengsels daarmee vervaardigd.
NL170056C (nl) Werkwijze ter bereiding van lichtgevoelig bekledingsmateriaal en gevormde voortbrengselen daaruit.
NL176467B (nl) Werkwijze ter bereiding van polyetherimiden en gevormde voorwerpen daaruit vervaardigd.
NL7409838A (nl) Werkwijze en inrichting voor roentgenografisch onderzoek.
BG25786A3 (bg) Метод за получаване на 1.1-диаминетиленови производни
BG22827A3 (bg) Метод за получаване на 1,2,4-триазол-нуклеозиди
NL7415235A (nl) Werkwijze voor het bereiden van een fluoresce- rende kleurstof en zo verkregen kleurstofdeel- tjes.
NL7508970A (nl) Thermoplastische polyurethanelastomeer en werk- wijze ter bereiding daarvan.
NL7501741A (nl) Aromatiseringsmiddel en werkwijze voor de bereiding daarvan.
AU473955B2 (en) Modified segmented copolyester
NL176178C (nl) Werkwijze ter bereiding van polyetherimiden en voorwerpen daaruit vervaardigd.
NL7410375A (nl) Magnetische pigmenten met verbeterde orienteer- baarheid alsmede werkwijze voor de bereiding daarvan.
NL7409371A (nl) Ionenuitwisselaars alsmede werkwijze voor de bereiding daarvan.
NL7416237A (nl) Nieuwe heterocyclische verbindingen en werkwijze voor de bereiding daarvan.
NL7411751A (nl) Nieuwe azomethinpigmenten en werkwijze voor de bereiding ervan.
NL7412501A (nl) Elektromagnetische seismometer.
CA1019646A (en) Air-stable magnetic materials and method
NL7412160A (nl) Werkwijze voor de bereiding van pigmenten.
NL7416934A (nl) Inrichting en werkwijze voor isotopenscheiding.
NL7412464A (nl) Anthelmintica en werkwijze om deze te bereiden.
NL176614C (nl) Werkwijze voor het bereiden van een gestabiliseerd permanent magnetisch materiaal, alsmede aldus bereid materiaal.
NL7317143A (nl) Werkwijze voor het vervaardigen van een magneet- kop en magneetkop vervaardigd met behulp van de werkwijze.
BG20583A3 (bg) Метод за получаване на 2,6-диамино-дихидропиридини

Legal Events

Date Code Title Description
BC A request for examination has been filed
A85 Still pending on 85-01-01
V1 Lapsed because of non-payment of the annual fee