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    Carboxylic-acid functional polyurethane polymers and their use in magnetic recording media
    6.
    发明授权
    Carboxylic-acid functional polyurethane polymers and their use in magnetic recording media 失效
    羧酸官能聚氨酯聚合物及其在磁记录介质中的应用

    公开(公告)号：US5498685A

    公开(公告)日：1996-03-12

    申请号：US54511

    申请日：1993-04-27

    申请人： James G. Carlson ,  Jack G. Truong ,  Jeffrey T. Anderson ,  Nelson T. Rotto

    发明人： James G. Carlson ,  Jack G. Truong ,  Jeffrey T. Anderson ,  Nelson T. Rotto

    IPC分类号： C08G18/65 ,  C08G18/08 ,  C08G18/34 ,  C08G18/81 ,  C08G18/83 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  G11B5/735

    CPC分类号： C08G18/345 ,  C08G18/0819 ,  C08G18/8108 ,  C08G18/8175 ,  C08G18/83 ,  C08G18/831 ,  G11B5/7021 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/31609

    摘要： The invention provides novel polyurethanes which can be used in magnetic media binders applications. The polyurethanes comprise multidentate chelating functional groups pendant from the polymer backbone, which groups are produced by esterification of backbone hydroxyl moieties with cyclic dicarboxylic acid anhydrides which also bear an additional polar functional group such as those selected from the group consisting of --H, --OH, --COOM, --SO.sub.3 M, --SH, --CH.sub.2 COOM, --SCH.sub.2 COOM, --P(=O)(OM).sub.2, --OP(=O)(OM).sub.2, and the like. Examples of anhydrides useful in preparation of the polyurethanes include anhydrides of citric acid, mercaptosuccinic acid, dimercaptosuccinic acid and nitrilotriacetic acid. The polyurethanes, which are optionally radiation curable, show high affinity for magnetic pigments, and blends of the polyurethanes with vinyl resins afford excellent binders for magnetic recording media.

    摘要翻译： 本发明提供了可用于磁性介质粘合剂应用的新型聚氨酯。 聚氨酯包括从聚合物主链悬挂的多齿螯合官能团，这些基团通过主链羟基部分与环状二羧酸酐酯化而产生，该二羧酸酸酐还具有另外的极性官能团，例如选自-H，-OH ，-COOM，-SO 3 M，-SH，-CH 2 COOM，-SCH 2 COOM，-P（= O）（OM）2，-OP（= O）（OM）2等。 可用于制备聚氨酯的酸酐的实例包括柠檬酸，巯基琥珀酸，二巯基琥珀酸和次氮基三乙酸的酸酐。 可选地可辐射固化的聚氨酯对磁性颜料显示出高亲和力，并且聚氨酯与乙烯基树脂的共混物为磁记录介质提供优异的粘合剂。

    Carboxylic-acid functional polyurethane polymers and their use in magnetic recording media
    7.
    发明授权
    Carboxylic-acid functional polyurethane polymers and their use in magnetic recording media 失效
    羧酸官能聚氨酯聚合物及其在磁记录介质中的应用

    公开(公告)号：US5661207A

    公开(公告)日：1997-08-26

    申请号：US611604

    申请日：1996-03-08

    申请人： James G. Carlson ,  Jack G. Truong ,  Jeffrey T. Anderson ,  Nelson T. Rotto

    发明人： James G. Carlson ,  Jack G. Truong ,  Jeffrey T. Anderson ,  Nelson T. Rotto

    IPC分类号： C08G18/65 ,  C08G18/08 ,  C08G18/34 ,  C08G18/81 ,  C08G18/83 ,  C09D5/23 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  G11B5/735 ,  C08K3/32

    CPC分类号： C08G18/345 ,  C08G18/0819 ,  C08G18/8108 ,  C08G18/8175 ,  C08G18/83 ,  C08G18/831 ,  G11B5/7021 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/31609

    摘要： The invention provides novel polyurethanes which can be used in magnetic media binders applications. The polyurethanes comprise multidentate chelating functional groups pendant from the polymer backbone, which groups are produced by esterification of backbone hydroxyl moieties with cyclic dicarboxylic acid anhydrides which also bear an additional polar functional group such as those selected from the group consisting of --H, --OH, --COOM, --SO.sub.3 M, --SH, --CH.sub.2 COOM, --SCH.sub.2 COOM, --P(.dbd.O)(OM).sub.2, --OP(.dbd.O)(OM).sub.2, and the like. Examples of anhydrides useful in preparation of the polyurethanes include anhydrides of citric acid, mercaptosuccinic acid, dimercaptosuccinic acid and nitrilotriacetic acid. The polyurethanes, which are optionally radiation curable, show high affinity for magnetic pigments, and blends of the polyurethanes with vinyl resins afford excellent binders for magnetic recording media.

    摘要翻译： 本发明提供了可用于磁性介质粘合剂应用的新型聚氨酯。 聚氨酯包括从聚合物主链悬挂的多齿螯合官能团，这些基团通过主链羟基部分与环状二羧酸酐酯化而产生，该二羧酸酸酐还具有另外的极性官能团，例如选自-H，-OH ，-COOM，-SO 3 M，-SH，-CH 2 COOM，-SCH 2 COOM，-P（= O）（OM）2，-OP（= O）（OM）2等。 可用于制备聚氨酯的酸酐的实例包括柠檬酸，巯基琥珀酸，二巯基琥珀酸和次氮基三乙酸的酸酐。 可选地可辐射固化的聚氨酯对磁性颜料显示出高亲和力，并且聚氨酯与乙烯基树脂的共混物为磁记录介质提供优异的粘合剂。