DE3480701D1 - Kontrollierte einleitung der chromdioxydsynthese. - Google Patents

Kontrollierte einleitung der chromdioxydsynthese.

Info

Publication number
DE3480701D1
DE3480701D1 DE8484115434T DE3480701T DE3480701D1 DE 3480701 D1 DE3480701 D1 DE 3480701D1 DE 8484115434 T DE8484115434 T DE 8484115434T DE 3480701 T DE3480701 T DE 3480701T DE 3480701 D1 DE3480701 D1 DE 3480701D1
Authority
DE
Germany
Prior art keywords
chromedioxyd
synthesis
controlled introduction
introduction
controlled
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE8484115434T
Other languages
English (en)
Inventor
Horng-Yih Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of DE3480701D1 publication Critical patent/DE3480701D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C01G37/027—Chromium dioxide
    • 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
    • G11B5/70636—CrO2
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/02—Amorphous compounds
    • 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
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
    • 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
    • C01P2006/12—Surface area
    • 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
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
    • 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)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Compounds Of Iron (AREA)
DE8484115434T 1983-12-16 1984-12-14 Kontrollierte einleitung der chromdioxydsynthese. Expired - Lifetime DE3480701D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/564,012 US4524008A (en) 1983-12-16 1983-12-16 Controlled initiation chromium dioxide synthesis

Publications (1)

Publication Number Publication Date
DE3480701D1 true DE3480701D1 (de) 1990-01-18

Family

ID=24252808

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484115434T Expired - Lifetime DE3480701D1 (de) 1983-12-16 1984-12-14 Kontrollierte einleitung der chromdioxydsynthese.

Country Status (5)

Country Link
US (1) US4524008A (de)
EP (1) EP0146127B1 (de)
JP (1) JPS60145915A (de)
KR (1) KR870001734B1 (de)
DE (1) DE3480701D1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513723A1 (de) * 1985-04-17 1986-10-23 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von ferromagnetischem chromdioxid
US4747974A (en) * 1986-03-28 1988-05-31 E. I. Dupont De Nemours And Company Mixed Cr2 O3 paste for CrO2 synthesis
DE3837646A1 (de) * 1988-11-05 1990-05-10 Basf Ag Nadelfoermiges, im wesentlichen aus chromdioxid bestehendes, ferromagnetisches material
DE4339841A1 (de) * 1993-11-23 1995-05-24 Basf Magnetics Gmbh Feinteiliges nadfelförmiges magnetisches modifiziertes Chromdioxid
US5698744A (en) * 1995-03-31 1997-12-16 E. I. Du Pont De Nemours And Company Process for the selective oxidation of compounds
EP3632444A3 (de) 2008-04-15 2020-08-26 SARcode Bioscience Inc. Topische lfa-1-antagonisten zur verwendung in der lokalen behandlung von immunerkrankungen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3278263A (en) * 1964-11-27 1966-10-11 Du Pont Ferromagnetic chromium dioxide and preparation thereof
NL7005311A (de) * 1969-04-18 1970-10-20
US3600315A (en) * 1969-12-22 1971-08-17 Ibm Methods of manufacturing magnetic compositions of carbon modified chromium oxide
DE2124812A1 (de) * 1971-05-19 1972-11-30 Bayer Ag Verfahren zur Herstellung von ferromagnetischem Chromdioxid
US3778373A (en) * 1971-11-08 1973-12-11 Bell & Howell Co Iron containing ferromagnetic chromium oxide
IT1045191B (it) * 1975-10-31 1980-05-10 Montedison Spa Procedimento per la produzione di biossido di cromo ferromagnetico
DE2942646A1 (de) * 1979-10-22 1981-04-30 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von ferromagnetischem chromdioxid
JPS5722893A (en) * 1980-07-14 1982-02-05 Fujitsu Ltd Method for laser welding and its apparatus

Also Published As

Publication number Publication date
US4524008A (en) 1985-06-18
EP0146127A2 (de) 1985-06-26
JPS6242852B2 (de) 1987-09-10
JPS60145915A (ja) 1985-08-01
KR850004444A (ko) 1985-07-15
EP0146127B1 (de) 1989-12-13
EP0146127A3 (en) 1987-06-16
KR870001734B1 (ko) 1987-09-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee