ES2054103T3 - Pigmentos metalicos de hierro aciculares con intensidad de campo coercitivo ajustable y procedimiento para su preparacion; pigmentos metalicos de fe para el registro magnetico de se¦ales con intensidad de campo coercitivo ajustable. - Google Patents
Pigmentos metalicos de hierro aciculares con intensidad de campo coercitivo ajustable y procedimiento para su preparacion; pigmentos metalicos de fe para el registro magnetico de se¦ales con intensidad de campo coercitivo ajustable.Info
- Publication number
- ES2054103T3 ES2054103T3 ES90100502T ES90100502T ES2054103T3 ES 2054103 T3 ES2054103 T3 ES 2054103T3 ES 90100502 T ES90100502 T ES 90100502T ES 90100502 T ES90100502 T ES 90100502T ES 2054103 T3 ES2054103 T3 ES 2054103T3
- Authority
- ES
- Spain
- Prior art keywords
- adjustable
- field intensity
- metallic pigments
- coercitive field
- preparation
- 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
Links
- 239000000049 pigment Substances 0.000 title abstract 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 238000002360 preparation method Methods 0.000 title abstract 2
- 229910052742 iron Inorganic materials 0.000 title 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 150000004678 hydrides Chemical class 0.000 abstract 1
- 230000006698 induction Effects 0.000 abstract 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 229910052987 metal hydride Inorganic materials 0.000 abstract 1
- 150000004681 metal hydrides Chemical class 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 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
- G11B5/70605—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 metals or alloys
- G11B5/70615—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 metals or alloys containing Fe metal or alloys
Landscapes
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Abstract
SE PUBLICA UN SISTEMA PARA LA FABRICACION DE PIGMENTOS FERROMETALICOS SIN SINTERIZACION, EN FORMA DE AGUJAS PARA LA SEÑALIZACION MAGNETICA DE ALTA DENSIDAD, ALTA MAGNETIZACION SATURADA Y REMANENCIA CUYA POTENCIA DE CAMPO DE COERZITIVIDAD ES BAJO A CIERTO TAMAÑO DE CRISTALIZADO DEL MATERIAL DE SALIDA Y PUEDE ELEVARSE A VOLUNTAD CALENTANDOLO POSTERIORMENTE. LA FABRICACION DE ESTOS PIGMENTOS DE METAL FERRICO SE EFECTUA MEDIANTE REDUCCION DE LAS COMPOSICIONES DE OXIDO DE HIERRO EN SOLUCIONES ORGANICAS CON METALDIHIDRO DE METALES DEL 1. AL 2. GRUPO DEL SISTEMA PERIODICO DE LOS ELEMENTOS ESTANDO SOLVATIZADOS LOS METALDIHIDROS CON UN SOPORTE EN FORMA DE COMPLEJO SOPORTE.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3901027A DE3901027A1 (de) | 1989-01-14 | 1989-01-14 | Nadelfoermige eisen-magnetpigmente mit einstellbarer koezitivfeldstaerke und verfahren zu deren herstellung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2054103T3 true ES2054103T3 (es) | 1994-08-01 |
Family
ID=6372123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES90100502T Expired - Lifetime ES2054103T3 (es) | 1989-01-14 | 1990-01-11 | Pigmentos metalicos de hierro aciculares con intensidad de campo coercitivo ajustable y procedimiento para su preparacion; pigmentos metalicos de fe para el registro magnetico de se¦ales con intensidad de campo coercitivo ajustable. |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5053075A (es) |
| EP (1) | EP0379062B1 (es) |
| JP (1) | JPH02276209A (es) |
| AT (1) | ATE106591T1 (es) |
| CA (1) | CA2007408A1 (es) |
| DE (2) | DE3901027A1 (es) |
| DK (1) | DK0379062T3 (es) |
| ES (1) | ES2054103T3 (es) |
| IE (1) | IE64784B1 (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3934351A1 (de) * | 1989-10-14 | 1991-04-18 | Studiengesellschaft Kohle Mbh | Verfahren zur herstellung von mikrokristallinen bis amorphen metall- bzw. legierungspulvern und ohne schutzkolloid in organischen solventien geloesten metallen bzw. legierungen |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1215574A (en) * | 1967-01-24 | 1970-12-09 | Alfred Richard Burkin | Deposition of metal values |
| US3623859A (en) * | 1970-05-22 | 1971-11-30 | Ampex | Process of making acicular stable magnetic iron particles |
| JPS4922630B1 (es) * | 1970-06-23 | 1974-06-10 | ||
| DE2646348C2 (de) * | 1976-10-14 | 1986-08-28 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von nadelförmigen, ferromagnetischen, im wesentlichen aus Eisen bestehenden Metallteilchen und deren Verwendung zur Herstellung von magnetischen Aufzeichnungsträgern |
| DE2907255A1 (de) * | 1979-02-24 | 1980-09-04 | Basf Ag | Verfahren zur herstellung nadelfoermiger ferromagnetischer eisenteilchen |
| JPS5676509A (en) * | 1979-11-28 | 1981-06-24 | Tdk Corp | Manufacture of magnetic powder |
| DE3021111A1 (de) * | 1980-06-04 | 1981-12-17 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von nadelfoermigen, im wesentlichen aus eisen bestehenden, ferromagnetischen metallteilchen |
| JPS579802A (en) * | 1980-06-20 | 1982-01-19 | Dainippon Ink & Chem Inc | Metallic magnetic powder and its manufacture |
-
1989
- 1989-01-14 DE DE3901027A patent/DE3901027A1/de not_active Withdrawn
-
1990
- 1990-01-09 CA CA002007408A patent/CA2007408A1/en not_active Abandoned
- 1990-01-11 DE DE59005846T patent/DE59005846D1/de not_active Expired - Fee Related
- 1990-01-11 EP EP90100502A patent/EP0379062B1/de not_active Expired - Lifetime
- 1990-01-11 AT AT90100502T patent/ATE106591T1/de active
- 1990-01-11 ES ES90100502T patent/ES2054103T3/es not_active Expired - Lifetime
- 1990-01-11 DK DK90100502.5T patent/DK0379062T3/da active
- 1990-01-12 IE IE13490A patent/IE64784B1/xx not_active IP Right Cessation
- 1990-01-12 US US07/463,764 patent/US5053075A/en not_active Expired - Fee Related
- 1990-01-16 JP JP2007011A patent/JPH02276209A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IE900134L (en) | 1990-07-14 |
| JPH02276209A (ja) | 1990-11-13 |
| DE3901027A1 (de) | 1990-07-26 |
| US5053075A (en) | 1991-10-01 |
| CA2007408A1 (en) | 1990-07-14 |
| IE64784B1 (en) | 1995-09-06 |
| EP0379062A2 (de) | 1990-07-25 |
| ATE106591T1 (de) | 1994-06-15 |
| DK0379062T3 (da) | 1994-06-20 |
| EP0379062B1 (de) | 1994-06-01 |
| EP0379062A3 (de) | 1991-05-22 |
| DE59005846D1 (de) | 1994-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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