Patent ID: 6303227
Filing Date: 2001-10-16
Classification: C10M,C10N,G11B,Y10S,Y10T

Abstract:
A lubricant composition comprisingat least one compound having a perfluoroalkyl group or a perfluoropolyether group, and an alkyl group or an alkenyl group in a molecule, which compound is selected from a group consisting of compounds represented by the following general formulae (a) and (b): ##STR10##wherein R.sub.1 is an alkyl group or an alkenyl group, R.sub.2 is a perfluoroalkyl group or a perfluoropolyether group, ""a"" is an integer of 0 to 20, and ""b"" is 0 or 1; and ##STR11##wherein R.sub.3 is an alkyl group or an alkenyl group, R.sub.4 is a perfluoroalkyl group or a perfluoropolyether group, R.sub.5 is O or S, ""c"" is an integer of 0 to 20, and ""d"" is 0 or 1; andat least one compound having a perfluoropolyether group in a molecule, which compound is selected from a group consisting of compounds represented by the following general formulae (c), (d) and (e):HOCH.sub.2 CF.sub.2 (OC.sub.2 F.sub.4).sub.e (OCF.sub.2).sub.g OCF.sub.2 CH.sub.2 OH (c)wherein ""e"" and ""g"" each are integers of not less than 1;HOOCCF.sub.2 (OC.sub.2 F.sub.4).sub.i (OCF.sub.2).sub.j OCF.sub.2 COOH (d)wherein ""i"" and ""j"" each are integers of not less than 1; andR.sub.6 COOCH.sub.2 CF.sub.2 (OC.sub.2 F.sub.4).sub.k (OCF.sub.2).sub.p OCF.sub.2 CH.sub.2 OCOR.sub.6 (e)wherein ""k"" and ""p"" each are integers of not less than 1, and R.sub.6 is an alkyl group having 4 to 22 carbon atoms.