Patent ID: 6541431
Filing Date: 2003-04-01
Classification: C10M,C10N,G11B,Y10S

Abstract:
A magnetic recording medium comprising a hard disk having a carbon protective layer on a surface thereof and a coating of a compound of formula (1) as a lubricant on the surface of the protective layer[N&boxH;P{O(C6H4)â€”(A)zâ€”R}a{OCH2â€”(B)xH}b]yâ€ƒâ€ƒ(1) wherein A is â€”C6H4â€” or â€”OC6H4â€”, B is fluorine-containing alkylene group, R is hydrogen atom, fluorine atom, C1-4 alkyl, C1-4 alkoxy or C1-4 haloalkyl, a and b are each a real number of from greater than zero to 2, satisfying a+b=2, x is 1, 2, 3 or 4, y is 3 or 4, and z is 1.