| 摘要 |
To provide a novel composition useful as lubricant composition or the like. It is disclosed a composition comprising an oily medium and at least one compound represented by following formula (Z). A-L-{D1-(E)q-D2-(B)m—Z1—R}p  (Z) A represents a p-valent chain or cyclic residue; L represents a single bond or a divalent linking group; p represents an integer of 2 or more; D1 represents a carbonyl group (—C(═O)—) or a sulfonyl group (—S(═O)2—); D2 represents a carbonyl group (—C(═O)—), a sulfonyl group (—S(═O)2—), a carboxyl group (—C(═O)O—), a sulfonyloxyl group (—S(═O)2O—), a carbamoyl group (—C(═O)N(Alk) or a sulfamoyl group (—S(═O)2N(Alk)-); E represents a divalent group; R represents a hydrogen atom, a substituted or non-substituted C8 or longer alkyl group, a perfluoroalkyl group or a trialkylsilyl group; B represents an oxyethylene group or the like; and Z1 represents a single bond or a divalent group.
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