发明申请
US20090087687A1 SULFONIC ACID POLYOL COMPOUND, POLYURETHANE RESIN, POLYURETHANE RESIN FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM 有权
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

SULFONIC ACID POLYOL COMPOUND, POLYURETHANE RESIN, POLYURETHANE RESIN FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM
摘要:
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.
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