Patent ID: 7956023
Filing Date: 2011-06-07
Classification: C10M,C10N,G11B

Abstract:
1. A lubricant solution for magnetic recording media, which comprises a lubricant and a fluorinated alkyl ether, wherein the lubricant is composed of a fluorinated polyether compound of the following formula (1) and the fluorinated alkyl ether is a compound of the following formula (4): wherein X is a group of the following formula (2): wherein a is an integer of from 0 to 100, b is an integer of from 0 to 100, c is an integer of from 1 to 100, and d is an integer of from 1 to 200, Z is a group of the following formula (3): wherein R Y is a (e+f) valent perfluorinated saturated hydrocarbon group or such a (e+f) valent perfluorinated saturated hydrocarbon group having an etheric oxygen atom inserted between carbon-carbon atoms, wherein no —OCF e is an integer of at least 2, and f is an integer of at least 0, provided that (e+f) is an integer of from 2 to 20, a plurality of X when e is at least 2, may be the same or different, and a plurality of Z when f is at least 2 may be the same or different, with the proviso that a fluorinated polyether compound which satisfies the following conditions: e is 2, f is 0, a is 0 and b is 0, is excluded from the fluorinated polyether compounds according to formula (1); wherein each of R