| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricant, especially a lubricant for a magnetic recording medium, having excellent lubricating characteristic and sustaining lubricating effects even after long hours use by attaching well to an object to be lubricated. SOLUTION: This lubricant is made of at least one compound selected from compounds expressed by general formula (a), wherein R<SP>1</SP>and R<SP>2</SP>each represents hydrogen, an aliphatic alkyl group or an aliphatic alkenyl group; a is an integer of 1-12; v is an integer of 1-12; w is an integer of 1-6; z is an integer of 1-5; and h and k each is an integer of 0-30. A lubricant layer of the magnetic recording medium is formed with this lubricant. COPYRIGHT: (C)2006,JPO&NCIPI |
