| 发明名称 |
MAGNETISCHES AUFZEICHNUNGSMEDIUM |
| 摘要 |
<p>A magnetic recording medium comprising a nonmagnetic supporting layer and, formed thereon, a magnetic layer comprising a ferromagnetic powder dispersed in a binder. The binder is composed of 30-70 wt.% of a polyurethane resin A having a glass transition temperature (Tg) satisfying the condition: 60 DEG C </= Tg </= 80 DEG C and another polyurethane resin B having a glass transition temperature (Tg) satisfying the condition: 0 DEG C < Tg </= 30 DEG C. At least one of the polyurethane resins has polar groups and the total amount of the resins A and B is 80-100 wt.% based on the binder. This medium has a good calenderability and excellent electromagnetic transduction performance, is reduced in dust dropping especially from the tape edge at ordinary temperatures, and has an excellent travelling stability in a high-temperature atmosphere.</p> |
| 申请公布号 |
DE69421788(T2) |
申请公布日期 |
2000.06.29 |
| 申请号 |
DE1994621788T |
申请日期 |
1994.05.23 |
| 申请人 |
TDK CORP., TOKIO/TOKYO |
发明人 |
ABE, SHINJI;NAKASHIMA, YUTAKA;HORIGOME, EIJI;YAHATA, TOSHIKAZU |
| 分类号 |
G11B5/702;(IPC1-7):G11B5/702 |
主分类号 |
G11B5/702 |
| 代理机构 |
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