发明名称 |
A magnetic recording medium. |
摘要 |
<p>A magnetic recording medium is disclosed which comprises a non-magnetic support and a magnetic coating layer formed thereon, the magnetic coating layer being formed by applying a magnetic coating composition comprising a resinous binder and magnetic particles dispersed therein, wherein the coating composition contains, as a resinous binder, a modified polyurethane resin obtained by reacting a polyurethane resin (A) with a bicyclic amide acetal (B), the polyurethane resin (A) having carboxyl groups in an amount of 50 to 2,000 equivalents/10<6> g and the equivalent ratio of the bicyclic amide acetal (B) to the carboxyl groups of the polyurethane resin (A) being within the range of 0.5 to 2.0.</p> |
申请公布号 |
EP0368172(A2) |
申请公布日期 |
1990.05.16 |
申请号 |
EP19890120413 |
申请日期 |
1989.11.04 |
申请人 |
TOYO BOSEKI KABUSHIKI KAISHA |
发明人 |
YATSUKA, TAKESHI C/O TOYO BOSEKI KABUSHIKI KAISHA;MURATA, HIROSHI C/O TOYO BOSEKI KABUSHIKI KAISHA;MIZUMURA, YUTAKA C/O TOYO BOSEKI KABUSHIKI KAISHA;KOTERA, NOBUKAZU C/O TOYO BOSEKI KABUSHIKI KAISHA |
分类号 |
C08G18/08;C08G18/83;C09D5/23;C09D175/00;C09D175/04;G11B5/702 |
主分类号 |
C08G18/08 |
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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