NL7807250A - PROCESS FOR THE PREPARATION OF MAGNETIC POWDERS. - Google Patents
PROCESS FOR THE PREPARATION OF MAGNETIC POWDERS.Info
- Publication number
- NL7807250A NL7807250A NL7807250A NL7807250A NL7807250A NL 7807250 A NL7807250 A NL 7807250A NL 7807250 A NL7807250 A NL 7807250A NL 7807250 A NL7807250 A NL 7807250A NL 7807250 A NL7807250 A NL 7807250A
- Authority
- NL
- Netherlands
- Prior art keywords
- preparation
- magnetic powders
- powders
- magnetic
- 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
- G11B5/712—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 surface treatment or coating of magnetic particles
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7964577A JPS5413997A (en) | 1977-07-04 | 1977-07-04 | Magnetic recording medium and its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7807250A true NL7807250A (en) | 1979-01-08 |
Family
ID=13695840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7807250A NL7807250A (en) | 1977-07-04 | 1978-07-04 | PROCESS FOR THE PREPARATION OF MAGNETIC POWDERS. |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5413997A (en) |
DE (1) | DE2829344A1 (en) |
FR (1) | FR2397049A1 (en) |
GB (1) | GB2001942B (en) |
NL (1) | NL7807250A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2903593C3 (en) * | 1979-01-31 | 1982-05-06 | Bayer Ag, 5090 Leverkusen | Cobalt-doped ferrimagnetic iron oxides and processes for their production |
DE2905351A1 (en) * | 1979-02-13 | 1980-08-21 | Basf Ag | METHOD FOR PRODUCING NEEDLE-SHAPED COBAL-CONTAINING, MAGNETIC IRON OXIDE |
DE2905352A1 (en) * | 1979-02-13 | 1980-08-21 | Basf Ag | METHOD FOR PRODUCING NEEDLE-SHAPED COBAL-CONTAINING MAGNETIC IRON OXIDE |
EP0099259A1 (en) * | 1982-07-09 | 1984-01-25 | Konica Corporation | Process for producing surface-treated ferromagnetic particles |
DE3631194A1 (en) * | 1986-09-13 | 1988-03-24 | Bayer Ag | MAGNETIC IRON OXIDE PIGMENTS AND METHOD FOR THE PRODUCTION THEREOF |
DE3631193A1 (en) * | 1986-09-13 | 1988-03-24 | Bayer Ag | MAGNETIC IRON OXIDE PIGMENTS AND METHOD FOR THE PRODUCTION THEREOF |
CN103694746B (en) * | 2013-12-27 | 2015-11-18 | 广东维诺珠光颜料有限公司 | A kind of preparation method of multifunctional magnetic synthetic mica pearlescent pigment |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4810994B1 (en) * | 1969-07-26 | 1973-04-09 | ||
JPS5321119B2 (en) * | 1973-03-20 | 1978-06-30 | ||
DE2243231C2 (en) * | 1972-09-01 | 1982-01-28 | Basf Ag, 6700 Ludwigshafen | Process for the preparation of cobalt-doped γ-iron (III) oxide |
DE2639250C2 (en) * | 1976-09-01 | 1985-12-12 | Basf Ag, 6700 Ludwigshafen | Process for the production of acicular, cobalt-doped magnetic iron oxide |
DE2705967C2 (en) * | 1977-02-12 | 1990-01-04 | Basf Ag, 6700 Ludwigshafen | Process for the production of acicular cobalt-containing magnetic iron oxide |
-
1977
- 1977-07-04 JP JP7964577A patent/JPS5413997A/en active Granted
-
1978
- 1978-07-03 FR FR7819812A patent/FR2397049A1/en active Granted
- 1978-07-04 NL NL7807250A patent/NL7807250A/en not_active Application Discontinuation
- 1978-07-04 DE DE19782829344 patent/DE2829344A1/en active Granted
- 1978-07-04 GB GB7828792A patent/GB2001942B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2397049A1 (en) | 1979-02-02 |
GB2001942B (en) | 1982-02-03 |
JPS6114642B2 (en) | 1986-04-19 |
JPS5413997A (en) | 1979-02-01 |
DE2829344A1 (en) | 1979-01-25 |
DE2829344C2 (en) | 1989-03-02 |
FR2397049B1 (en) | 1982-04-02 |
GB2001942A (en) | 1979-02-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NL175991C (en) | PROCESS FOR THE PREPARATION OF TETRAFLUORETHANE. | |
NL189085C (en) | PROCESS FOR THE PREPARATION OF OCTAFLUORPROPANE. | |
NL183033C (en) | PROCESS FOR THE PREPARATION OF N-PHOSPHONOMETHYLGLYCIN. | |
NL178684C (en) | PROCESS FOR THE PREPARATION OF DIALKYLOXALATES | |
NL191313C (en) | Process for the preparation of p-chloroalkylbenzene. | |
NL189129C (en) | PROCESS FOR THE PREPARATION OF ACYLCYANIDES | |
NL188407C (en) | PROCESS FOR THE PREPARATION OF D (-) - ALFA-PHENYLGLYCIN. | |
NL181923C (en) | PROCESS FOR THE PREPARATION OF BETA-AMINOPROPIONAMIDE. | |
NL7803325A (en) | PROCESS FOR THE PREPARATION OF 1-AZOLYL-3.3-DIMETHYL-1-PHENOXYBUTAN-2-ON COMPOUNDS. | |
NL175819C (en) | PROCESS FOR THE PREPARATION OF MORANOLINE. | |
NL189088C (en) | PROCESS FOR THE PREPARATION OF ACYLCYANIDES | |
NL7807250A (en) | PROCESS FOR THE PREPARATION OF MAGNETIC POWDERS. | |
NL7800174A (en) | PROCESS FOR THE PREPARATION OF POWDER POLYOLEFINS. | |
NL7705457A (en) | PROCESS FOR THE PREPARATION OF 2.3-DIMETHYLPEN-TANAL. | |
NL187065C (en) | PROCESS FOR THE PREPARATION OF STYRYLDIPHENYLAMINE. | |
NL188996C (en) | PROCESS FOR THE PREPARATION OF ACYLCYANIDES | |
NL7800026A (en) | PROCESS FOR THE PREPARATION OF SUBSTITUTED AMINO-BENZENES. | |
NL7812393A (en) | PROCESS FOR THE PREPARATION OF 1-HYDROXYAPORPHIN DERIVATORS. | |
NL7803629A (en) | PROCESS FOR THE PREPARATION OF PHOSPHORILATED AMIDINS. | |
NL7704149A (en) | PROCESS FOR THE PREPARATION OF TITANO TRICHLORI PREPARATIONS. | |
NL7802881A (en) | PROCESS FOR THE PREPARATION OF TRITERPEEN COMPOUNDS. | |
NL7806128A (en) | PROCESS FOR THE PREPARATION OF STYRENE. | |
NL189511C (en) | PROCESS FOR THE PREPARATION OF THIOCARBONOHYDRAZIDE. | |
NL7804970A (en) | PROCESS FOR THE PREPARATION OF 1.5-DICHLOORANTRACHINON. | |
NL7804226A (en) | PROCESS FOR THE PREPARATION OF (1-CHLOROETHENYL) OXIANE. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A85 | Still pending on 85-01-01 | ||
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
BV | The patent application has lapsed |