SE7611815L - PROCEDURE FOR THE PRODUCTION OF FERROMAGNETIC CHROME Dioxide - Google Patents
PROCEDURE FOR THE PRODUCTION OF FERROMAGNETIC CHROME DioxideInfo
- Publication number
- SE7611815L SE7611815L SE7611815A SE7611815A SE7611815L SE 7611815 L SE7611815 L SE 7611815L SE 7611815 A SE7611815 A SE 7611815A SE 7611815 A SE7611815 A SE 7611815A SE 7611815 L SE7611815 L SE 7611815L
- Authority
- SE
- Sweden
- Prior art keywords
- procedure
- production
- ferromagnetic
- chrome dioxide
- dioxide
- Prior art date
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
- G11B5/70636—CrO2
-
- 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
-
- 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
-
- 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)
- Hard Magnetic Materials (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Magnetic Record Carriers (AREA)
- Chemical Treatment Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT28915/75A IT1045191B (en) | 1975-10-31 | 1975-10-31 | PROCEDURE FOR THE PRODUCTION OF FERROMAGNETIC CHROMIUM DIOXIDE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE7611815L true SE7611815L (en) | 1977-05-01 |
Family
ID=11224583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7611815A SE7611815L (en) | 1975-10-31 | 1976-10-25 | PROCEDURE FOR THE PRODUCTION OF FERROMAGNETIC CHROME Dioxide |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS5274597A (en) |
| AT (1) | AT356062B (en) |
| AU (1) | AU502999B2 (en) |
| BE (1) | BE847812A (en) |
| BR (1) | BR7607234A (en) |
| CA (1) | CA1090555A (en) |
| CH (1) | CH625193A5 (en) |
| CS (1) | CS207373B2 (en) |
| DD (1) | DD127640A5 (en) |
| DE (1) | DE2648305C3 (en) |
| DK (1) | DK481376A (en) |
| ES (1) | ES452891A1 (en) |
| FR (1) | FR2329594A1 (en) |
| GB (1) | GB1524576A (en) |
| IT (1) | IT1045191B (en) |
| NL (1) | NL7611785A (en) |
| SE (1) | SE7611815L (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4524008A (en) * | 1983-12-16 | 1985-06-18 | E. I. Du Pont De Nemours And Company | Controlled initiation chromium dioxide synthesis |
| DE3728453A1 (en) * | 1987-08-26 | 1989-03-09 | Basf Ag | METHOD FOR PRODUCING MODIFIED FERROMAGNETIC CHROMDIOXIDE |
| DE3837646A1 (en) * | 1988-11-05 | 1990-05-10 | Basf Ag | NEEDLE-SHAPED, ESSENTIAL CHROMDIOXIDE, FERROMAGNETIC MATERIAL |
| DE4339841A1 (en) * | 1993-11-23 | 1995-05-24 | Basf Magnetics Gmbh | Finely divided needle-like magnetic chromium di:oxide |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2885365A (en) * | 1956-10-22 | 1959-05-05 | Du Pont | Ruthenium-modified chromium oxide ferromagnetic compositions, their pre-aration and use |
| DE1467238A1 (en) * | 1963-07-24 | 1969-01-23 | ||
| US3278263A (en) * | 1964-11-27 | 1966-10-11 | Du Pont | Ferromagnetic chromium dioxide and preparation thereof |
| CH468923A (en) * | 1967-07-21 | 1969-02-28 | Ferag Ag | Transport device for flat structures occurring in a scale formation |
| DE1802469A1 (en) * | 1968-10-11 | 1971-10-28 | Bayer Ag | Process for the production of ferromagnetic chromium dioxide |
| DE1922409A1 (en) * | 1969-05-02 | 1970-11-12 | Bayer Ag | Process for the production of ferromagnetic chromium dioxide |
| DE2022820C3 (en) * | 1970-05-11 | 1980-01-03 | Basf Ag, 6700 Ludwigshafen | Process for the production of highly coercive chromium dioxide |
| AU452489B2 (en) * | 1971-03-04 | 1974-08-16 | Montecatini Edisons. P. A | Process for preparing ferromagnetic chromium dioxide |
| JPS497198A (en) * | 1972-05-12 | 1974-01-22 | ||
| IT956230B (en) * | 1972-04-22 | 1973-10-10 | Montedison Spa | COMPOSITION OF MODIFIED FERROMAGNETIC CHROME DIOXIDE AND PREPARATION P OCES SO |
-
1975
- 1975-10-31 IT IT28915/75A patent/IT1045191B/en active
-
1976
- 1976-10-25 NL NL7611785A patent/NL7611785A/en not_active Application Discontinuation
- 1976-10-25 DK DK481376A patent/DK481376A/en not_active Application Discontinuation
- 1976-10-25 SE SE7611815A patent/SE7611815L/en unknown
- 1976-10-25 CH CH1351376A patent/CH625193A5/en not_active IP Right Cessation
- 1976-10-26 CA CA264,248A patent/CA1090555A/en not_active Expired
- 1976-10-26 DE DE2648305A patent/DE2648305C3/en not_active Expired
- 1976-10-27 BR BR7607234A patent/BR7607234A/en unknown
- 1976-10-27 CS CS766928A patent/CS207373B2/en unknown
- 1976-10-28 DD DD195502A patent/DD127640A5/xx unknown
- 1976-10-28 AU AU19118/76A patent/AU502999B2/en not_active Expired
- 1976-10-28 FR FR7632529A patent/FR2329594A1/en active Granted
- 1976-10-28 AT AT800476A patent/AT356062B/en not_active IP Right Cessation
- 1976-10-29 GB GB45138/76A patent/GB1524576A/en not_active Expired
- 1976-10-29 BE BE171938A patent/BE847812A/en not_active IP Right Cessation
- 1976-10-29 JP JP51130370A patent/JPS5274597A/en active Granted
- 1976-10-30 ES ES452891A patent/ES452891A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DD127640A5 (en) | 1977-10-05 |
| FR2329594B1 (en) | 1981-07-31 |
| AT356062B (en) | 1980-04-10 |
| ATA800476A (en) | 1979-09-15 |
| GB1524576A (en) | 1978-09-13 |
| DE2648305B2 (en) | 1980-07-03 |
| FR2329594A1 (en) | 1977-05-27 |
| AU1911876A (en) | 1978-05-04 |
| NL7611785A (en) | 1977-05-03 |
| AU502999B2 (en) | 1979-08-16 |
| DE2648305A1 (en) | 1977-05-12 |
| CS207373B2 (en) | 1981-07-31 |
| BE847812A (en) | 1977-04-29 |
| IT1045191B (en) | 1980-05-10 |
| DK481376A (en) | 1977-05-01 |
| JPS5274597A (en) | 1977-06-22 |
| ES452891A1 (en) | 1977-10-16 |
| JPS5722893B2 (en) | 1982-05-15 |
| BR7607234A (en) | 1977-09-13 |
| CA1090555A (en) | 1980-12-02 |
| DE2648305C3 (en) | 1982-11-25 |
| CH625193A5 (en) | 1981-09-15 |
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