JPS6413223A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6413223A JPS6413223A JP16933087A JP16933087A JPS6413223A JP S6413223 A JPS6413223 A JP S6413223A JP 16933087 A JP16933087 A JP 16933087A JP 16933087 A JP16933087 A JP 16933087A JP S6413223 A JPS6413223 A JP S6413223A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic layer
- group
- specific
- aliphat
- formulas
- 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
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Abstract
PURPOSE:To obtain excellent traveling durability by incorporating a binder consisting of a polyurethane resin which has the polar group selected from a specific group and has the glass transition temp. within a specific temp. range and specific aliphat. polyisocyanate into a magnetic layer. CONSTITUTION:The magnetic layer has at least one kind of the polar group selected from the group consisting of -COOM, -SO3M, -OSO3M, and -PO(OM')2, where M denotes H, alkaline metal atom, NH4 or quaternary ammonium group; M' denotes Y, alkali metal or lower hydrocarbon group. The magnetic layer contains the binder consisting of the polyurethane resin having the glass transition temp. in a -10-70 deg.C range and at least one kind of the aliphat. polyisocyanates expressed by formulas I, II, III. In formulas, R<1>, R<2>, R<3> denote alkyl groups of 3-10C which may be the same or different from each other. The modulus of elasticity at 0.5% elongation of the magnetic layer is so adjusted as to be 500-1,200kg/mm<2>.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16933087A JPS6413223A (en) | 1987-07-06 | 1987-07-06 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16933087A JPS6413223A (en) | 1987-07-06 | 1987-07-06 | Magnetic recording medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6413223A true JPS6413223A (en) | 1989-01-18 |
Family
ID=15884550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16933087A Pending JPS6413223A (en) | 1987-07-06 | 1987-07-06 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6413223A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6472316A (en) * | 1987-09-12 | 1989-03-17 | Sony Corp | Magnetic recording medium |
JPH0344819A (en) * | 1989-07-12 | 1991-02-26 | Fuji Photo Film Co Ltd | Magnetic recording medium |
-
1987
- 1987-07-06 JP JP16933087A patent/JPS6413223A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6472316A (en) * | 1987-09-12 | 1989-03-17 | Sony Corp | Magnetic recording medium |
JPH0344819A (en) * | 1989-07-12 | 1991-02-26 | Fuji Photo Film Co Ltd | Magnetic recording medium |
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