Patent ID: 7195828

Claim:
A magnetic recording medium, comprising: a non-magnetic support; a magnetic layer formed on the support; and a lubricant layer over the magnetic layer, the lubricant layer including a compound selected from a hydrocarbyl-substituted cyclopentane, a hydrocarbyl-substituted cyclopentene, a hydrocarbyl-substituted cyclopentadiene, and mixtures thereof and at least one additive selected from an antioxidant, an antiwear agent, and a friction modifier, wherein the hydrocarbyl-substituted cyclopentane, hydrocarbyl-substituted cyclopentene, or hydrocarbyl-substituted cyclopentadiene are represented by the following respective formulas: wherein c is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10; m and n are zero or a positive integer; R 1 , R 2 , and R 3 are individually a hydrocarbyl group; and R 5 is hydrogen or hydrocarbyl.