Magnetic recording media
    5.
    发明授权
    Magnetic recording media 失效
    磁记录媒体

    公开(公告)号:US4666781A

    公开(公告)日:1987-05-19

    申请号:US759298

    申请日:1985-07-26

    摘要: Magnetic recording media comprising a non-magnetic substrate and a magnetic layer comprising a finely divided magnetic material dispersed in an organic solvent soluble, crosslinkable, essentially linear, thermoplastic polyurethane which possesses acrylate side and terminal groups wherein said polyurethane is prepared by reacting poly- and/or diisocyanates with a mixture of (a) methacrylate - or acrylate - diols having molecular weights of from 146 to 3,000, (b) monoesters of methacrylic or acrylic acid and a diol having a molecular weight of from 116 to 300, and (c) other organic polydiol compounds which have molecular weights of from 400 to 5,000.

    摘要翻译: 包含非磁性基底和磁性层的磁性记录介质包括分散在有机溶剂可溶性,可交联的,基本上线性的热塑性聚氨酯中的细碎磁性材料,其具有丙烯酸酯侧和端基,其中所述聚氨酯通过聚 (a)分子量为146〜3000的(a)甲基丙烯酸酯或丙烯酸酯 - 二醇的混合物的二异氰酸酯,(b)甲基丙烯酸或丙烯酸的单酯和分子量为116〜300的二醇和(c )分子量为400至5,000的其它有机聚二醇化合物。

    Magnetic recording media
    7.
    发明授权
    Magnetic recording media 失效
    磁记录媒体

    公开(公告)号:US4666783A

    公开(公告)日:1987-05-19

    申请号:US734185

    申请日:1985-05-15

    摘要: Magnetic recording media comprise a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said binder matrix being obtained by electron beam curing of a mixture of from 60 to 100% by weight of a polyurethane acrylate polymer possessing polymerizable acrylate double bonds and from 0 to 40% by weight of an acrylate monomer and/or an acrylate prepolymer and/or an N-vinyl monomer.

    摘要翻译: 磁记录介质包括非磁性基体和一个或多个由含有细碎磁性材料的有机粘合剂基质组成的磁性层,所述粘合剂基质通过电子束固化获得,该混合物为60至100重量% 具有可聚合丙烯酸酯双键的聚氨酯丙烯酸酯聚合物和0至40重量%的丙烯酸酯单体和/或丙烯酸酯预聚物和/或N-乙烯基单体。