IT957712B - Impianto per produrre ossidi di ferro magnetici e prodotti cosi ottenuti - Google Patents

Impianto per produrre ossidi di ferro magnetici e prodotti cosi ottenuti

Info

Publication number
IT957712B
IT957712B IT5003772A IT5003772A IT957712B IT 957712 B IT957712 B IT 957712B IT 5003772 A IT5003772 A IT 5003772A IT 5003772 A IT5003772 A IT 5003772A IT 957712 B IT957712 B IT 957712B
Authority
IT
Italy
Prior art keywords
plant
products
magnetic iron
iron oxides
produce magnetic
Prior art date
Application number
IT5003772A
Other languages
English (en)
Italian (it)
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 DE19712122312 external-priority patent/DE2122312C3/de
Application filed by Bayer Ag filed Critical Bayer Ag
Application granted granted Critical
Publication of IT957712B publication Critical patent/IT957712B/it

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]
    • 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
    • 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
    • C01P2004/54—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
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 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
    • C01P2006/42—Magnetic 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
    • C01P2006/80—Compositional purity

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)
  • Compounds Of Iron (AREA)
IT5003772A 1971-05-06 1972-05-04 Impianto per produrre ossidi di ferro magnetici e prodotti cosi ottenuti IT957712B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712122312 DE2122312C3 (de) 1971-05-06 Verfahren zur Herstellung von magnetischen Eisenoxiden mit verbesserten Eigenschaften

Publications (1)

Publication Number Publication Date
IT957712B true IT957712B (it) 1973-10-20

Family

ID=5806972

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5003772A IT957712B (it) 1971-05-06 1972-05-04 Impianto per produrre ossidi di ferro magnetici e prodotti cosi ottenuti

Country Status (9)

Country Link
JP (1) JPS553295B1 (ja)
BE (1) BE783021A (ja)
CA (1) CA995874A (ja)
CH (1) CH582111A5 (ja)
FR (1) FR2135342B1 (ja)
GB (1) GB1385777A (ja)
IT (1) IT957712B (ja)
NL (1) NL7206131A (ja)
PL (1) PL82318B1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974079A (en) * 1971-05-06 1976-08-10 Bayer Aktiengesellschaft Production of gamma iron oxide
DE2805405A1 (de) * 1978-02-09 1979-08-16 Basf Ag Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden
DE2805621A1 (de) * 1978-02-10 1979-08-23 Basf Ag Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden
JPS5891039A (ja) 1981-11-27 1983-05-30 Ishihara Sangyo Kaisha Ltd 磁気記録材料用針状α−ＦｅＯＯＨの製造方法
DE3413752A1 (de) * 1984-04-12 1985-10-24 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung isotroper magnetischer, kobalthaltiger eisenoxide

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388659A (en) * 1943-07-12 1945-11-06 Interchem Corp Manufacture of pigments
FR1587959A (ja) * 1967-11-25 1970-04-03

Also Published As

Publication number Publication date
GB1385777A (en) 1975-02-26
BE783021A (fr) 1972-11-06
CA995874A (en) 1976-08-31
NL7206131A (ja) 1972-11-08
DE2122312A1 (de) 1972-11-23
JPS553295B1 (ja) 1980-01-24
PL82318B1 (ja) 1975-10-31
FR2135342A1 (ja) 1972-12-15
DE2122312B2 (de) 1976-12-09
FR2135342B1 (ja) 1978-09-08
CH582111A5 (ja) 1976-11-30

Similar Documents

Publication Publication Date Title
IT974063B (it) Procedimento per produrre ossidi di ferro magnetici aciculari
IT982408B (it) Composizioni tintorie per capelli umani e procedimento di produzione
IT966856B (it) Composizioni poliuretaniche rapidamente indurenti ed oggetti prodotti da esse
HK45677A (en) Improvements in or relating to magnetic devices
IT1025606B (it) Perfezionamento alla refrigerazione di prodotti mediante neve carbonica ed alla produzione di nevecanbonica
IT1052473B (it) Procedimento per produrre prepolimeri di s triazina e prodotti cosi ottenuti
IT957712B (it) Impianto per produrre ossidi di ferro magnetici e prodotti cosi ottenuti
IT1029522B (it) Procedimento per la preparazione di prodotti di addizione di bis 2 piridil ossido bisolfur o consali di metalli alcaido terrosi e prodotto ottentuto
IT974489B (it) Procedimento per produrre omopoli meri a blocchi di butadiene 1 3 e prodotti cosi ottenuti
IT976647B (it) Procedimento per produrre leghe di ferro cobalto con migliorate caratteristiche magnetiche e le ghe cosi ottenute
IT989647B (it) Procedimento per produrre tap peti fibrosi e prodotti cosi ot tenuti
IT958596B (it) Procedimento per essiccare rapida mente prepolimeri e prodotti cosi ottenuti
IE36280L (en) Preparation of desoxyribonucleic acids
HK35476A (en) Improvements in or relating to magnetic devices
IT953513B (it) Prodotti per la protezione delle piante
IT982802B (it) Procedimento di preparazione di soluzioni solide di ossido di ferro e metalli bivalenti quali il cobalto e prodotti ottenuti
IT964176B (it) Procedimento di preparazione di poliammidi e prodotti cosi ot tenuti
IT954838B (it) Prodotti disinfestanti
IT1011466B (it) Procedimento per produrre ossidi di ferro ferromagnetici aghiformi contenenti cobalto
IT955489B (it) Prodotti disinfestanti
IT954411B (it) Procedimento per preparare prodot ti di poliaddizione di diisociana to e prodotti cosi ottenuti
IT1048399B (it) Fabbricazione di prodotti azotati a lento rilascio utili in agricoltura
IT1031515B (it) Proceoimento ed impianto ed impianto per lariduzione di miierale di ferro
IL39347A0 (en) Novel benzamidohydroxamic acids and their preparation
IT947859B (it) Prodotti di rivestimento