JPS5674830A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS5674830A JPS5674830A JP15110379A JP15110379A JPS5674830A JP S5674830 A JPS5674830 A JP S5674830A JP 15110379 A JP15110379 A JP 15110379A JP 15110379 A JP15110379 A JP 15110379A JP S5674830 A JPS5674830 A JP S5674830A
- Authority
- JP
- Japan
- Prior art keywords
- acetate copolymer
- vinyl acetate
- urethane prepolymer
- magnetic layer
- vinyl chloride
- 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 increase the dispersing and filling properties of the magnetic powder as well as the smoothness, heat resistance and durability of the magnetic layer each, by using a vinyl chloride-vinyl acetate copolymer, the specific copolymerized polyester resin and the urethane prepolymer as the binder of the magnetic layer.
CONSTITUTION: The magnetic recording medium uses the vinyl chloride-vinyl acetate copolymer, a copolymerized polyester resin containing a metallic sulphonate group and a urethane prepolymer as the binder components of the magnetic layer. The vinyl chloride-vinyl acetate copolymer uses VYHH, VAGH, VMCH and the like. The polyester is obtained by copolymerization of 5-sodium sulfo-isophthalate into a polyester; and the urethane prepolymer is the straight chain type low molecular weight urethane resin which has a free isocyanate group at the both terminals. Such magnetic recording excels in the chroma output, video S/N and low- temperature stiffness property in comparison with the conventional video tape.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15110379A JPS5674830A (en) | 1979-11-20 | 1979-11-20 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15110379A JPS5674830A (en) | 1979-11-20 | 1979-11-20 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5674830A true JPS5674830A (en) | 1981-06-20 |
Family
ID=15511403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15110379A Pending JPS5674830A (en) | 1979-11-20 | 1979-11-20 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5674830A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123017A (en) * | 1984-11-20 | 1986-06-10 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
-
1979
- 1979-11-20 JP JP15110379A patent/JPS5674830A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123017A (en) * | 1984-11-20 | 1986-06-10 | Matsushita Electric Ind Co Ltd | Magnetic recording medium |
JPH0518171B2 (en) * | 1984-11-20 | 1993-03-11 | Matsushita Electric Ind Co Ltd |
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