发明授权
US5169721A Magnetic recording media comprising a polyurethane binder resin
containing perfluoro groups
失效
包含聚四氟乙烯组合的聚氨酯粘结剂的磁记录介质
- 专利标题： Magnetic recording media comprising a polyurethane binder resin containing perfluoro groups
- 专利标题（中）： 包含聚四氟乙烯组合的聚氨酯粘结剂的磁记录介质
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申请号： US571228申请日： 1990-08-23
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公开(公告)号： US5169721A公开(公告)日： 1992-12-08
- 发明人: Michael Bobrich , August Lehner , Albert Kohl , Rudolf Suettinger , Uwe Keppeler , Werner Lenz , Roller Hermann , Helmut Kopke , Guenther Schulz
- 申请人： Michael Bobrich , August Lehner , Albert Kohl , Rudolf Suettinger , Uwe Keppeler , Werner Lenz , Roller Hermann , Helmut Kopke , Guenther Schulz
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX3929167 19890902
- 主分类号： C08G18/12
- IPC分类号： C08G18/12 ; C08G18/38 ; C08G18/50 ; C08G18/65 ; C08G18/66 ; C08L75/04 ; C09D5/23 ; C09D175/00 ; C09D175/04 ; G11B5/702
摘要：
Magnetic recording media consist of a nonmagnetic substrate and at least one magnetizable layer which is firmly applied thereon and is based on a polyurethane binder, not less than 50% by weight of the binder consisting of a high molecular weight branched polyurethane elastomer having OH-containing urea groups at the chain ends, and the frictional properties of the binder being improved and its coefficient of friction reduced by incorporation of perfluoro groups.
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