Lubricant composition, method for using and preparing thereof and molecular complex compound used for the same

摘要

A lubricant composition containing a molecular complex compound formed by inter-molecular interaction of one or more keto-enol tautomeric compounds, wherein said molecular complex compound contains as a constituent a keto-enol tautomeric compound (but excluding specified triarylmelamine compounds) represented by the formula (I) (where, Q11 represents an oxygen atom, sulfur atom or N(R13); R11 to R13 independently represents a hydrogen atom or a substituent, at least one of which being a substituent containing a C4 or longer alkyl chain or oligoalkyleneoxy chain, a C2 or longer perfluoroalkyl chain, perfluoroalkyl ether chain or organic polysilyl chain; R11 and R12, or R1 and R13 may bind with each other-to thereby form a cyclic structure) is disclosed.