发明名称 |
Biaxially oriented polyester film for magnetic recording media. |
摘要 |
<p>A biaxially oriented polyester film for magnetic recording media, which comprises: (A) 0.05 to 1.0 % by weight of theta -aluminum oxide or mixed ( alpha + gamma ) aluminum oxide having an average particle diameter in the range of from 0.02 to 0.3 mu m and a specific surface area in the range of from 50 to 120 m<2>/g, and (B) 0.01 to 1.5 % by weight of inert particles having an average particle diameter which is in the range of from 0.1 to 1.5 mu m and greater than the average particle diameter of the aluminum oxide. ,</p> |
申请公布号 |
EP0490665(B1) |
申请公布日期 |
1995.10.04 |
申请号 |
EP19910311542 |
申请日期 |
1991.12.11 |
申请人 |
TEIJIN LIMITED |
发明人 |
MUROOKA, HIROFUMI;KATO, SUMIO;ETCHU, MASAMI |
分类号 |
B29C55/12;B29K67/00;B29K105/16;B29L7/00;C08J5/18;C09D5/23;C09D7/12;G11B5/73;G11B5/733;(IPC1-7):G11B5/704;G11B5/70;G11B5/708 |
主分类号 |
B29C55/12 |
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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