BE841592A - Procede de preparation d'un oxyde de fer gamma (iii) - Google Patents
Procede de preparation d'un oxyde de fer gamma (iii)Info
- Publication number
- BE841592A BE841592A BE166848A BE166848A BE841592A BE 841592 A BE841592 A BE 841592A BE 166848 A BE166848 A BE 166848A BE 166848 A BE166848 A BE 166848A BE 841592 A BE841592 A BE 841592A
- Authority
- BE
- Belgium
- Prior art keywords
- gamma
- iii
- preparing
- iron oxide
- iron
- Prior art date
Links
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 title 2
- 238000004519 manufacturing process Methods 0.000 title 1
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
- C01G49/06—Ferric oxide [Fe2O3]
-
- 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
- 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)
- Inorganic Compounds Of Heavy Metals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2520643A DE2520643C2 (de) | 1975-05-09 | 1975-05-09 | Verfahren zur Herstellung von γ-Eisen(III)oxid |
Publications (1)
Publication Number | Publication Date |
---|---|
BE841592A true BE841592A (fr) | 1976-11-08 |
Family
ID=5946142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE166848A BE841592A (fr) | 1975-05-09 | 1976-05-07 | Procede de preparation d'un oxyde de fer gamma (iii) |
Country Status (6)
Country | Link |
---|---|
US (1) | US4071610A (fr) |
JP (1) | JPS602251B2 (fr) |
BE (1) | BE841592A (fr) |
DE (1) | DE2520643C2 (fr) |
FR (1) | FR2310316A1 (fr) |
GB (1) | GB1537890A (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4202871A (en) * | 1977-11-14 | 1980-05-13 | Sakai Chemical Industry Co., Ltd. | Production of acicular ferric oxide |
US4276183A (en) * | 1978-10-25 | 1981-06-30 | Pfizer Inc. | Cobalt modified magnetic iron oxide |
JPS5626729A (en) * | 1979-08-11 | 1981-03-14 | Tdk Corp | Powdered magnetic material for magnetic recording medium |
DE3224325A1 (de) * | 1982-06-30 | 1984-01-05 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden |
US5069216A (en) * | 1986-07-03 | 1991-12-03 | Advanced Magnetics Inc. | Silanized biodegradable super paramagnetic metal oxides as contrast agents for imaging the gastrointestinal tract |
US5219554A (en) * | 1986-07-03 | 1993-06-15 | Advanced Magnetics, Inc. | Hydrated biodegradable superparamagnetic metal oxides |
US5318838A (en) * | 1988-01-22 | 1994-06-07 | Fuji Photo Film Co., Ltd. | Magnetic recording medium comprising ferromagnetic particles, binder resins and phenyl phosphonic acid |
GB2313832B (en) * | 1996-06-03 | 1999-11-24 | Minnesota Mining & Mfg | Surface modification of magnetic particle pigments |
US6099895A (en) * | 1997-05-29 | 2000-08-08 | Imation Corp. | Surface modification of magnetic particle pigments |
US6808741B1 (en) * | 2001-10-26 | 2004-10-26 | Seagate Technology Llc | In-line, pass-by method for vapor lubrication |
JP5054243B1 (ja) * | 2012-04-02 | 2012-10-24 | 公二 宇野 | 直線定規 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3015627A (en) * | 1960-07-06 | 1962-01-02 | C K Williams & Co | Gamma ferric oxide for magnetic impulse record members |
DE1176111B (de) * | 1962-07-16 | 1964-08-20 | Bayer Ag | Verfahren zur Herstellung von ferro-magnetischem ª†-FeO |
DE1219009B (de) * | 1963-06-26 | 1966-06-16 | Bayer Ag | Verfahren zur Herstellung von gamma-FeOOH |
FR1587959A (fr) * | 1967-11-25 | 1970-04-03 | ||
US3974079A (en) * | 1971-05-06 | 1976-08-10 | Bayer Aktiengesellschaft | Production of gamma iron oxide |
BE794292A (fr) * | 1972-01-21 | 1973-07-19 | Bayer Ag | Procede de preparation d'oxydes de fer magnetiques aciculaires finement divises |
US3897354A (en) * | 1972-04-29 | 1975-07-29 | Bayer Ag | Cobalt-containing acicular ferrimagnetic iron oxide of improved remanence stability |
US3894970A (en) * | 1973-03-26 | 1975-07-15 | Ibm | Method of preparing high temperature stable gamma iron oxide |
US3931025A (en) * | 1973-09-21 | 1976-01-06 | Bayer Aktiengesellschaft | Magnetic iron oxides with improved orientability and a process for their production |
DE2428875C2 (de) * | 1974-06-14 | 1983-11-03 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von γ-Eisen(III)oxid |
-
1975
- 1975-05-09 DE DE2520643A patent/DE2520643C2/de not_active Expired
-
1976
- 1976-04-19 US US05/677,920 patent/US4071610A/en not_active Expired - Lifetime
- 1976-05-05 FR FR7613349A patent/FR2310316A1/fr active Granted
- 1976-05-07 GB GB18801/76A patent/GB1537890A/en not_active Expired
- 1976-05-07 JP JP51051420A patent/JPS602251B2/ja not_active Expired
- 1976-05-07 BE BE166848A patent/BE841592A/fr not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPS602251B2 (ja) | 1985-01-21 |
DE2520643A1 (de) | 1976-11-18 |
JPS51136600A (en) | 1976-11-26 |
US4071610A (en) | 1978-01-31 |
GB1537890A (en) | 1979-01-10 |
FR2310316A1 (fr) | 1976-12-03 |
DE2520643C2 (de) | 1983-11-17 |
FR2310316B3 (fr) | 1979-03-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: BASF A.G. Effective date: 19920531 |