发明名称 |
Magnetischer Aufzeichnungsträger |
摘要 |
<p>In a magnetic recording medium comprising a nonmagnetic substrate and at least one magnetic layer provided on the nonmagnetic substrate, in which layer a ferromagnetic fine powder and a binder are dispersed together, the magnetic layer comprises as a substantial binder a polyurethane obtained from a polyester polyol, a chain extender and an organic diisocyanate. The ferromagnetic fine powder contains cobalt-containing iron as a main component, and the polyurethane comprises a polyester polyol containing an aliphatic dibasic acid as a dibasic acid, and a diol component, at least 70 mol% of which contains an alkyl branched side chain having at least 2 carbon atoms.</p> |
申请公布号 |
DE69818211(D1) |
申请公布日期 |
2003.10.23 |
申请号 |
DE1998618211 |
申请日期 |
1998.12.24 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
MURAYAMA, YUICHIRO;MEGURO, KATSUHIKO;HASHIMOTO, HIROSHI |
分类号 |
G11B5/702;G11B5/706;(IPC1-7):G11B5/702;G11B5/73 |
主分类号 |
G11B5/702 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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