发明名称 |
Magnetic particles binder for magnetic tapes - consisting of polyvinyl formal |
摘要 |
Polyvinyl formal contains hydroxyl and acetate groups and is used in ratio of 2-7 parts magnetic particles to 1 part binder. Before coating carrier with magnetic mixture, this is subjected to shear forces, by grinding in a ball mill. |
申请公布号 |
DE1908945(A1) |
申请公布日期 |
1970.04.09 |
申请号 |
DE19691908945 |
申请日期 |
1969.02.22 |
申请人 |
VEB FILMFABRIK WOLFEN |
发明人 |
BROCKEL,DIPL.-CHEM.DIETER;SCHEFTER,DIPL.-CHEM.WILFRIED |
分类号 |
G11B5/702;G11B5/84 |
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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