JPS57210426A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS57210426A JPS57210426A JP9572881A JP9572881A JPS57210426A JP S57210426 A JPS57210426 A JP S57210426A JP 9572881 A JP9572881 A JP 9572881A JP 9572881 A JP9572881 A JP 9572881A JP S57210426 A JPS57210426 A JP S57210426A
- Authority
- JP
- Japan
- Prior art keywords
- groups
- normal
- liquid
- magnetic
- temperature
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 title abstract 6
- 239000007788 liquid Substances 0.000 abstract 4
- 239000003973 paint Substances 0.000 abstract 3
- 239000012948 isocyanate Substances 0.000 abstract 2
- -1 isocyanate compound Chemical class 0.000 abstract 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 239000004925 Acrylic resin Substances 0.000 abstract 1
- 229920000178 Acrylic resin Polymers 0.000 abstract 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 1
- 239000003302 ferromagnetic material Substances 0.000 abstract 1
- 125000000524 functional group Chemical group 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 230000002463 transducing effect Effects 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
- G11B5/702—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 bonding agent
- G11B5/7021—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 bonding agent containing a polyurethane or a polyisocyanate
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To reduce the used amount of an organic solvent, to decrease the gap rate of a magnetic layer, and to improve electromagnetic transducing characteristics, by using a resin component which is liquid at normal temperature for manufacturing a magnetic paint. CONSTITUTION:A resin component consisting of normal-temperature liquid acrylic resin (which has 500-20,000 mean molecular weight and is oligomerous) which is liquid at normal temperature and has functional groups, capable of reacting with isocyanate groups such as hydroxl groups and carboxyl groups, in a molecule, and a normal-temperature liquid multifunctional isocyanate compound which has at least two free isocyanate groups in a molecule is mixed with an about 30-20wt% isocyanate compound, based upon the whole amount of a magnetic paint, together with a ferromagnetic material, thus preparing the magnetic paint for magnetic recording media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9572881A JPS57210426A (en) | 1981-06-20 | 1981-06-20 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9572881A JPS57210426A (en) | 1981-06-20 | 1981-06-20 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57210426A true JPS57210426A (en) | 1982-12-24 |
Family
ID=14145529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9572881A Pending JPS57210426A (en) | 1981-06-20 | 1981-06-20 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57210426A (en) |
-
1981
- 1981-06-20 JP JP9572881A patent/JPS57210426A/en active Pending
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