发明名称 |
VERFAHREN ZUR HERSTELLUNG VON MAGNETISCHEN AUFZEICHNUNGSTRAEGERN |
摘要 |
<p>A process for the preparation of a magnetic recording medium by dispersing pulverulent magnetic material in a binder mixture which is dissolved in an organic solvent and essentially consists of an elastomeric polyurethane and a high molecular weight hydroxyl-containing polymer, with addition of dispersing assistants and conventional additives, applying a layer of the dispersion, to which a diisocyanate and/or polyisocyanate has first been added, to a base material and the solidifying the layer and crosslinking the binder matrix, wherein the diisocyanate and/or polyisocyanate is added to the dispersion and, before applying the dispersion to the base, from 15 to 55% of the NCO groups present react with the hydroxyl-containing polymer of the binder mixture.</p> |
申请公布号 |
DE3432016(A1) |
申请公布日期 |
1986.03.13 |
申请号 |
DE19843432016 |
申请日期 |
1984.08.31 |
申请人 |
BASF AG |
发明人 |
ROLLER,HERMANN;HACK,JOACHIM;WOWERIES,UWE;LEHNER,AUGUST;GRAU,WERNER,DR.;NAGEL,PETER;FALK,ROLAND,DR. |
分类号 |
C08J7/04;C09D5/23;C09D175/00;C09D175/04;C10M105/56;C10N40/18;C10N70/00;G11B5/702;G11B5/842;(IPC1-7):G11B5/842 |
主分类号 |
C08J7/04 |
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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