发明授权
- 专利标题： Abrasive used in magnetic recording medium and production thereof
- 专利标题（中）： 磁记录介质中使用的磨料及其制造
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申请号： US693226申请日： 1985-01-22
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公开(公告)号： US4590127A公开(公告)日： 1986-05-20
- 发明人: Tadanori Hashimoto , Kazuhiko Nakano , Norio Matsuda
- 申请人： Tadanori Hashimoto , Kazuhiko Nakano , Norio Matsuda
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX57-192843 19821102
- 主分类号： C09D5/23
- IPC分类号： C09D5/23 ; C09D7/12 ; C09K3/14 ; G11B5/708
摘要：
When an abrasive having an oleophilic surface intended for use in magnetic recording media, said abrasive being obtained by subjecting an inorganic powder material having a Mohs hardness of 5 or above and an average particle size of 2 .mu.m or below to a wet contact treatment with an aqueous solution or an organic solvent solution containing a dispersing agent having an oleophilic group and drying the treated powder material, is used together with a magnetic powder material in the magnetic recording layer of a magnetic recording medium, the wear of the magnetic head can be prevented and the still characteristics of the recording medium is improved.
公开/授权文献
- US5747030A Pharmaceutical preparation containing plasminogen activators 公开/授权日：1998-05-05
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