JPS6489020A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6489020A JPS6489020A JP24632587A JP24632587A JPS6489020A JP S6489020 A JPS6489020 A JP S6489020A JP 24632587 A JP24632587 A JP 24632587A JP 24632587 A JP24632587 A JP 24632587A JP S6489020 A JPS6489020 A JP S6489020A
- Authority
- JP
- Japan
- Prior art keywords
- glass transition
- polyurethane resin
- transition temp
- kinds
- 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.)
- Granted
Links
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
PURPOSE:To improve traveling durability by using a vinyl chloride copolymer having >=60 deg.C glass transition temp. and 2 kinds of polyurethane resin which are the polyurethane resin having >=3 deg.C glass transition temp. and the polyurethane resin having <3 deg.C glass transition temp. as a binder. CONSTITUTION:The binder to be used consists of the four resins; the vinyl chloride copolymer having >=60 deg.C glass transition temp., the polyurethane resin having >=3 deg.C glass transition temp., the polyurethane resin having <3 deg.C glass transition temp., and a polyisocyanate compd. The difference between the glass transition temps. of two kinds of these polyurethane resins is required to be >=10 deg.C. Basic rigidity is assured by using such vinyl chloride copolymer and the rigidity adaptable to high and low temps. is obtd. by using two kinds of the polyurethane resins having the different glass transition temps. The traveling durability is thereby improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246325A JPH0799573B2 (en) | 1987-09-30 | 1987-09-30 | Magnetic recording medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246325A JPH0799573B2 (en) | 1987-09-30 | 1987-09-30 | Magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6489020A true JPS6489020A (en) | 1989-04-03 |
JPH0799573B2 JPH0799573B2 (en) | 1995-10-25 |
Family
ID=17146881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62246325A Expired - Fee Related JPH0799573B2 (en) | 1987-09-30 | 1987-09-30 | Magnetic recording medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0799573B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5168407A (en) * | 1990-03-26 | 1992-12-01 | Nippon Mining Company, Ltd. | Flying magnetic head |
JPH05266458A (en) * | 1990-12-25 | 1993-10-15 | Toyobo Co Ltd | Magnetic recording medium |
WO1993024924A2 (en) * | 1992-06-04 | 1993-12-09 | Minnesota Mining And Manufacturing Company | Magnetic recording medium comprising binder that may be cured using both isocyanate and radiation curing techniques |
WO1994028544A1 (en) * | 1993-05-24 | 1994-12-08 | Tdk Corporation | Magnetic recording medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6234327A (en) * | 1985-08-07 | 1987-02-14 | Toyobo Co Ltd | Magnetic recording medium |
-
1987
- 1987-09-30 JP JP62246325A patent/JPH0799573B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6234327A (en) * | 1985-08-07 | 1987-02-14 | Toyobo Co Ltd | Magnetic recording medium |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5168407A (en) * | 1990-03-26 | 1992-12-01 | Nippon Mining Company, Ltd. | Flying magnetic head |
JPH05266458A (en) * | 1990-12-25 | 1993-10-15 | Toyobo Co Ltd | Magnetic recording medium |
WO1993024924A2 (en) * | 1992-06-04 | 1993-12-09 | Minnesota Mining And Manufacturing Company | Magnetic recording medium comprising binder that may be cured using both isocyanate and radiation curing techniques |
WO1993024924A3 (en) * | 1992-06-04 | 1994-02-03 | Minnesota Mining & Mfg | Magnetic recording medium comprising binder that may be cured using both isocyanate and radiation curing techniques |
WO1994028544A1 (en) * | 1993-05-24 | 1994-12-08 | Tdk Corporation | Magnetic recording medium |
Also Published As
Publication number | Publication date |
---|---|
JPH0799573B2 (en) | 1995-10-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |