DE3246752C2 - - Google Patents
Info
- Publication number
- DE3246752C2 DE3246752C2 DE19823246752 DE3246752A DE3246752C2 DE 3246752 C2 DE3246752 C2 DE 3246752C2 DE 19823246752 DE19823246752 DE 19823246752 DE 3246752 A DE3246752 A DE 3246752A DE 3246752 C2 DE3246752 C2 DE 3246752C2
- Authority
- DE
- Germany
- 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
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
-
- 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
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- 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
- C01P2004/51—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
- 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
- C01P2006/12—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
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9537381A JPS57209834A (en) | 1981-06-22 | 1981-06-22 | Preparation of goethite |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3246752A1 DE3246752A1 (de) | 1984-06-20 |
DE3246752C2 true DE3246752C2 (US20030199744A1-20031023-C00003.png) | 1987-04-09 |
Family
ID=14135826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19823246752 Granted DE3246752A1 (de) | 1981-06-22 | 1982-12-17 | Verfahren zur herstellung von goethit |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS57209834A (US20030199744A1-20031023-C00003.png) |
DE (1) | DE3246752A1 (US20030199744A1-20031023-C00003.png) |
NL (1) | NL188344C (US20030199744A1-20031023-C00003.png) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62167222A (ja) * | 1986-01-17 | 1987-07-23 | Showa Denko Kk | レピツドクロサイトの製造方法 |
JPH0531977U (ja) * | 1991-10-01 | 1993-04-27 | 清美 森口 | しおり |
JPH0735055U (ja) * | 1993-06-02 | 1995-06-27 | 義也 田中 | 拡大レンズ付きブックカバ− |
AU2015314215B2 (en) * | 2014-09-11 | 2018-02-22 | Lanxess Deutschland Gmbh | Red iron-oxide pigments with improved colour values |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3843773A (en) * | 1970-05-11 | 1974-10-22 | Eastman Kodak Co | Process for producing fine acicular gamma ferric oxide crystals |
US3974267A (en) * | 1975-04-24 | 1976-08-10 | Cities Service Company | Manufacture of iron oxides |
DE2550308C3 (de) * | 1975-11-08 | 1978-07-13 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von nadeiförmigem a-Eisen(III)-Oxidhydrat |
DE2556406A1 (de) * | 1975-12-15 | 1977-06-16 | Bayer Ag | Verfahren zur kontinuierlichen herstellung von eisenoxidhydroxid |
GB1567957A (en) * | 1977-01-17 | 1980-05-21 | Nihon Sangyo Gijutsu Kk | Method for producing needle-shaped fine particles of -goehite |
JPS5777033A (en) * | 1980-10-24 | 1982-05-14 | Sony Corp | Manufacture of iron oxide hydrate gamma-feooh |
-
1981
- 1981-06-22 JP JP9537381A patent/JPS57209834A/ja active Granted
-
1982
- 1982-12-17 DE DE19823246752 patent/DE3246752A1/de active Granted
- 1982-12-20 NL NL8204902A patent/NL188344C/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPS57209834A (en) | 1982-12-23 |
DE3246752A1 (de) | 1984-06-20 |
NL8204902A (nl) | 1984-07-16 |
NL188344B (nl) | 1992-01-02 |
JPH028971B2 (US20030199744A1-20031023-C00003.png) | 1990-02-28 |
NL188344C (nl) | 1992-06-01 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |