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    • 3. 发明授权
    • Sulfonic acid polyol compound, polyurethane resin, polyurethane resin for magnetic recording medium, and magnetic recording medium
    • 磺酸多元醇化合物,聚氨酯树脂,用于磁记录介质的聚氨酯树脂和磁记录介质
    • US07737304B2
    • 2010-06-15
    • US12235709
    • 2008-09-23
    • Kazufumi OmuraMasahiko MoriKatsumi ArakiMasataka Yoshizawa
    • Kazufumi OmuraMasahiko MoriKatsumi ArakiMasataka Yoshizawa
    • C07C321/00C07C323/00C07C381/00C08G18/00G11B5/708G11B5/33
    • G11B5/7021C07C309/14C08G18/0828C08G18/3215C08G18/3857C08G18/4676G11B5/714
    • A compound represented by the Formula (1) below is provided: wherein X denotes a divalent linking group, R1 and R2 independently denote an alkyl group having 3 or more carbons and having at least one hydroxy group or an aralkyl group having 8 or more carbons and having at least one hydroxy group, the alkyl group and aralkyl group may have a substituent, and M denotes a hydrogen atom or a cation. There is also provided a polyurethane resin obtained by polymerization of a polyisocyanate and a polyol that includes the compound. There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder that includes the polyurethane resin. There is also provided a magnetic recording medium that includes a non-magnetic support, above the support at least one non-magnetic layer including a non-magnetic powder dispersed in a binder (1), and, above the non-magnetic layer, at least one magnetic layer having a ferromagnetic powder dispersed in a binder (2), in which binder (1) and/or binder (2) is the polyurethane resin.
    • 提供由下式(1)表示的化合物:其中X表示二价连接基团,R 1和R 2独立地表示具有3个或更多个碳原子并且具有至少一个羟基或具有8个或更多个碳的芳烷基的烷基 并且具有至少一个羟基,烷基和芳烷基可以具有取代基,M表示氢原子或阳离子。 还提供了通过聚合多异氰酸酯和包含该化合物的多元醇获得的聚氨酯树脂。 还提供了一种磁记录介质,其包括非磁性载体,并且在载体上方,至少包括分散在包含聚氨酯树脂的粘合剂中的铁磁粉末的磁性层。 还提供了一种磁记录介质,其包括非磁性载体,在载体上方至少一个包含分散在粘合剂(1)中的非磁性粉末的非磁性层,以及非磁性层上方,在 至少一个具有分散在粘合剂(2)中的铁磁粉末的磁性层,其中粘合剂(1)和/或粘合剂(2)是聚氨酯树脂。
    • 4. 发明申请
    • SULFONIC ACID POLYOL COMPOUND, POLYURETHANE RESIN, POLYURETHANE RESIN FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM
    • 硫酸多元醇化合物,聚氨酯树脂,磁性记录介质的聚氨酯树脂和磁记录介质
    • US20090087687A1
    • 2009-04-02
    • US12235709
    • 2008-09-23
    • Kazufumi OMURAMasahiko MoriKatsumi ArakiMasataka Yoshizawa
    • Kazufumi OMURAMasahiko MoriKatsumi ArakiMasataka Yoshizawa
    • G11B5/706C07C381/00C08L75/04
    • G11B5/7021C07C309/14C08G18/0828C08G18/3215C08G18/3857C08G18/4676G11B5/714
    • A compound represented by the Formula below is provided.(in Formula (1), X denotes a divalent linking group, R1 and R2 independently denote an alkyl group having 3 or more carbons and having at least one hydroxy group or an aralkyl group having 8 or more carbons and having at least one hydroxy group, the alkyl group and aralkyl group may have a substituent, and M denotes a hydrogen atom or a cation). There is also provided a polyurethane resin obtained by polymerization of a polyisocyanate and a polyol that includes the compound. There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder that includes the polyurethane resin. There is also provided a magnetic recording medium that includes a non-magnetic support, above the support at least one non-magnetic layer including a non-magnetic powder dispersed in a binder (1), and, above the non-magnetic layer, at least one magnetic layer having a ferromagnetic powder dispersed in a binder (2), in which binder (1) and/or binder (2) is the polyurethane resin.
    • 提供由下式表示的化合物。 (式(1)中,X表示二价连接基团,R 1和R 2分别表示碳原子数3以上且具有至少1个羟基或碳数8以上的芳烷基且具有至少1个羟基的烷基 烷基和芳烷基可以具有取代基,M表示氢原子或阳离子)。 还提供了通过聚合多异氰酸酯和包含该化合物的多元醇获得的聚氨酯树脂。 还提供了一种磁记录介质,其包括非磁性载体,并且在载体上方,至少包括分散在包含聚氨酯树脂的粘合剂中的铁磁粉末的磁性层。 还提供了一种磁记录介质,其包括非磁性载体,在载体上方至少一个包含分散在粘合剂(1)中的非磁性粉末的非磁性层,以及非磁性层上方,在 至少一个具有分散在粘合剂(2)中的铁磁粉末的磁性层,其中粘合剂(1)和/或粘合剂(2)是聚氨酯树脂。