发明名称 |
Magnetic storage medium |
摘要 |
The present invention relates to a magnetic storage medium consisting of a non-magnetic layer support and, applied thereto, a binder-containing magnetic layer, the binder consisting of from 25 to 100% of a thermoplastic polyurethane substantially free from reactive terminal groups obtained by reacting a linear polyester of at least one dicarboxylic acid containing from 2 to 8 carbon atoms and/or hydroxy carboxylic acid containing from 4 to 6 carbon atoms and at least one glycol containing from 2 to 6 carbon atoms, the polyester having a molecular weight of from 1200 to 6000, at least one diisocyanate and a mixture of at least two glycols containing from 2 to 20 carbon atoms, the molar fraction of the individual components not exceeding 0.8. The polyurethane has a hardness of from 80 to 100 Shore A, a tensile strength of from 30 to 75 MPa and a breaking elongation of from 320 to 520%.
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申请公布号 |
US4477531(A) |
申请公布日期 |
1984.10.16 |
申请号 |
US19820396238 |
申请日期 |
1982.07.08 |
申请人 |
AGFA-GEVAERT AG |
发明人 |
KOHLER, ROBERT;NIPPE, BURKHARD;KOBER, HEINRICH;SCHILFFARTH, KARLCHRISTIAN;MECKEL, WALTER;QUIRING, BERND |
分类号 |
C09D5/23;C09D127/04;C09D127/06;C09D129/00;C09D129/04;C09D133/04;C09D175/06;G11B5/702;G11B5/708;(IPC1-7):G11B5/68;B32B27/40 |
主分类号 |
C09D5/23 |
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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