Magnetic recording medium,申请号US20030418333-传众专利搜索

Magnetic recording medium

申请公布号：US6969550(B2)

申请号：US20030418333

申请日期：2003.04.18

申请公布日期：2005.11.29

申请人：

SONY CORPORATION

发明人：SATO TOMOE;SAMOTO TETSUO;YOSHIDA SHINYA;WAKO HITOSHI;KANOU TAKASHI;IKEDA NAOKI;SUZUKI KAZUHIKO;ONODERA SEIICHI

分类号：G11B5/725;(IPC1-7):G11B5/725

主分类号：G11B5/725

摘要：There is provided a magnetic recording medium which exhibits superior lubricating properties and superior tape-transport properties as well as superior robustness even in a low-temperature environment. A magnetic layer containing a ferromagnetic metal is formed on a nonmagnetic support, and a protecting film is formed on the magnetic layer. A lubricant auxiliary coating composition comprising an aromatic alcohol is applied to the protecting film to form a lubricant auxiliary layer, and a lubricant coating composition comprising a compound represented by the formula (1) below is applied to the lubricant auxiliary layer to form a lubricant layer. <?in-line-formulae description="In-line Formulae" end="lead"?>R1CH(COOR2)CH2COOR3 (1)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein R1 represents an aliphatic alkyl group, an aliphatic alkenyl group, or a hydrogen atom, and each of R2 and R3 independently represents a fluoroalkyl group, a fluoroalkenyl group, a fluoropolyether group, or a hydrogen atom.