发明名称 |
MAGNETISCHES AUFZEICHNUNGSMEDIUM |
摘要 |
A magnetic recording disc having a high durability and being rotatively driven with small starting torque which comprises a non-magnetic support and a magnetic layer provided on at least one surface of the support, the magnetic layer comprising magnetic powder, a resinous binder, (a) an ester of an unsaturated fatty acid of 8 to 18 carbon atoms with a monovalent or polyvalent, saturated or unsaturated alcohol of not more than 18 carbon atoms optionally substituted with at least one alkoxy group having not more than 8 carbon atoms and (b) a fatty acid ester of the formula: <IMAGE> wherein R1 is a saturated or unsaturated aliphatic hydrocarbon group having 8 to 18 carbon atoms, R2 is an alkyl group having not more than 18 carbon atoms and n is an integer of 1 or more, the combined amount of the unsaturated fatty acid ester (a) and the fatty acid ester (b) being not less than 5 parts by weight to 100 parts by weight of the magnetic powder. |
申请公布号 |
DE3634693(A1) |
申请公布日期 |
1987.04.16 |
申请号 |
DE19863634693 |
申请日期 |
1986.10.11 |
申请人 |
HITACHI MAXELL,LTD. |
发明人 |
FUNAHASHI,MASAYA;MIYATA,TERUHISA;INOUE,KENICHI;MIYAKE,AKIRA;NORIMATSU,KOJI |
分类号 |
G11B5/708;C09D5/23;G11B5/71;(IPC1-7):G11B5/71 |
主分类号 |
G11B5/708 |
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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