Sulfonic acid polyol compound, polyurethane resin, polyurethane resin for magnetic recording medium, and magnetic recording medium
申请人:FUJIFILM Corporation
公开号:US07737304B2
公开(公告)日:2010-06-15
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.
提供一种由以下化学式(1)表示的化合物:其中X表示二价连接基团,R1和R2分别表示具有3个或更多碳的烷基基团和至少一个羟基或具有8个或更多碳的芳基烷基基团和至少一个羟基,烷基和芳基烷基基团可具有取代基,M表示氢原子或阳离子。还提供了通过聚合包括该化合物的多异氰酸酯和多元醇获得的聚氨酯树脂。还提供了一种包括非磁性支撑体和至少一个磁性层的磁记录介质,所述磁性层包括在包括聚氨酯树脂的粘合剂中分散的铁磁性粉末。还提供了一种包括非磁性支撑体、至少一个包括在粘合剂(1)中分散的非磁性粉末的非磁性层和在非磁性层上方、包括在粘合剂(2)中分散的铁磁性粉末的至少一个磁性层的磁记录介质,其中粘合剂(1)和/或粘合剂(2)是聚氨酯树脂。