发明名称 |
PROCESS FOR PRODUCING MAGNETIC RECORDING MEDIA |
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 |
EP0173213(A3) |
申请公布日期 |
1988.07.27 |
申请号 |
EP19850110366 |
申请日期 |
1985.08.19 |
申请人 |
BASF AKTIENGESELLSCHAFT |
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):G11B5/702 |
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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