发明名称 |
Flexible magnetic recording media having a backing coating containing a polyurethane resin having a phosphate group and precipitated silica |
摘要 |
In flexible magnetic recording media consisting essentially of a web-like nonmagnetic substrate, the magnetic layer is applied to one main side of the web-like substrate and a backing coating formed on the opposite main side of the substrate from a polymeric binder and nonmagnetic fillers as well as supporting pigments, the backing coating contains a precipitated silica treated on the surface with a phosphate-containing polyurethane.
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申请公布号 |
US5346761(A) |
申请公布日期 |
1994.09.13 |
申请号 |
US19930060975 |
申请日期 |
1993.05.14 |
申请人 |
BASF MAGNETICS GMBH |
发明人 |
ROLLER, HERMANN;ENGELHARDT, PETER;BAUR, REINHOLD;BOBRICH, MICHAEL;LATZEL, WERNER;LENZ, WERNER;SUETTINGER, RUDOLF |
分类号 |
G11B5/66;G11B5/73;G11B5/733;G11B5/735;(IPC1-7):G11B5/00 |
主分类号 |
G11B5/66 |
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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