发明名称 |
PLANARIZING FILM-FORMING COMPOSITION FOR HARD DISK AND HARD DISK PRODUCTION METHOD USING SAME |
摘要 |
A planarizing film-forming composition for a hard disk that is a non-magnetic filler is sufficiently filled into fine grooves on a magnetic material surface (surface), and is required not to cause contraction in the filled parts at the time of photo-curing (at the time of exposure) and post-exposure baking; and a method for producing a hard disk using the composition. The composition comprising at least one polyfunctional (meth)acrylate compound being in a liquid state at room temperature and atmospheric pressure and having a molecular weight of 300 to 10,000. The compound preferably has 2 to 20 (meth)acrylate groups in the molecule, or the compound preferably has a molecular weight of 300 to 2,300. A method for producing a hard disk comprising: forming a concave-convex shape on the surface; covering the surface having the concave-convex shape with the composition; and etching the covered surface for planarization until the surface is exposed.
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申请公布号 |
US2013026132(A1) |
申请公布日期 |
2013.01.31 |
申请号 |
US201113640923 |
申请日期 |
2011.04.18 |
申请人 |
NISSAN CHEMICAL INDUSTRIES, LTD.;KATO TAKU;KOBAYASHI JUNPEI;SHUTO KEISUKE;SUZUKI MASAYOSHI |
发明人 |
KATO TAKU;KOBAYASHI JUNPEI;SHUTO KEISUKE;SUZUKI MASAYOSHI |
分类号 |
C08F120/10;C07C69/604;C08F120/26;G11B5/84 |
主分类号 |
C08F120/10 |
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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