JPS5613521A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS5613521A JPS5613521A JP8747779A JP8747779A JPS5613521A JP S5613521 A JPS5613521 A JP S5613521A JP 8747779 A JP8747779 A JP 8747779A JP 8747779 A JP8747779 A JP 8747779A JP S5613521 A JPS5613521 A JP S5613521A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic recording
- recording medium
- resin
- binder
- 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
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE: To obtain a magnetic recording medium having dispersibility and surface property improved by forming a magnetic layer by mixing magnetic powder in a binder that contains -SO3Na group containing polyester resin, a copolymer of vinyl chloride and vinyl acetate and thermoplastic polyurethane.
CONSTITUTION: Ferromagnetic powder is dispersed in a binder, containing a resin introduced -SO3Na group as a side chain for polyurethane resin, a copolymer of vinyl chloride and vinyl acetate and thermoplastic polyurethane prepolymer. This magnetic coating is applied on a polyester film, etc., and then dried to form a magnetic recording tape. Consequently, the magnetic recording tape can be obtained which has superior surface reflectivity, residual magnetic-flux density, Br/Bm ratio, S/N ratio, etc.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8747779A JPS5613521A (en) | 1979-07-12 | 1979-07-12 | Magnetic recording medium |
NL8003850A NL8003850A (en) | 1979-07-12 | 1980-07-03 | Magnetic recording tape - using binder comprising polyester with sodium sulphonate gps. and polyurethane prepolymer |
GB8022605A GB2054622B (en) | 1979-07-12 | 1980-07-10 | Magnetic recording medium |
DE19803026357 DE3026357A1 (en) | 1979-07-12 | 1980-07-11 | MAGNETIC RECORDING MEDIUM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8747779A JPS5613521A (en) | 1979-07-12 | 1979-07-12 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5613521A true JPS5613521A (en) | 1981-02-09 |
Family
ID=13915996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8747779A Pending JPS5613521A (en) | 1979-07-12 | 1979-07-12 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5613521A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS598127A (en) * | 1982-07-05 | 1984-01-17 | Sony Corp | Magnetic recording medium |
-
1979
- 1979-07-12 JP JP8747779A patent/JPS5613521A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS598127A (en) * | 1982-07-05 | 1984-01-17 | Sony Corp | Magnetic recording medium |
JPH0379764B2 (en) * | 1982-07-05 | 1991-12-19 | Sonii Kk |
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